CN112582995A - Circuit breaker three-phase inconsistent protection device - Google Patents
Circuit breaker three-phase inconsistent protection device Download PDFInfo
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- CN112582995A CN112582995A CN202011514041.4A CN202011514041A CN112582995A CN 112582995 A CN112582995 A CN 112582995A CN 202011514041 A CN202011514041 A CN 202011514041A CN 112582995 A CN112582995 A CN 112582995A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
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Abstract
The invention provides a three-phase inconsistent protection device for a circuit breaker, which comprises a circuit breaker failure and auxiliary protection device, an operation relay device and an externally-arranged intermediate relay, wherein the circuit breaker failure and auxiliary protection device comprises a main relay, a secondary relay and a main relay; the circuit breaker failure and auxiliary protection device comprises a protection device plug-in, wherein the protection device plug-in comprises a first charging protection action trip assembly, a first overcurrent protection action trip assembly, a first inconsistent protection action trip assembly, a second charging protection action trip assembly, a second overcurrent protection action trip assembly and a second inconsistent protection action trip assembly. According to the invention, the three-phase inconsistent protection, the charging protection and the overcurrent protection trip outlet are separated by adding a protection device plug-in, additionally installing an externally-matched intermediate relay and a related pressure plate circuit connection, so that the three-phase inconsistent protection outlet can trip, a failure circuit is not started and reclosing is locked, and the three-phase inconsistent protection standard requirement of a power system is completely met.
Description
Technical Field
The invention relates to the technical field of electronic circuits, in particular to a three-phase inconsistent protection device for a circuit breaker.
Background
In a power grid with a voltage level of 220kV or above, a circuit breaker with split-phase operation is generally adopted, due to the reasons of equipment quality, operation and the like, an abnormal state that three-phase circuit breakers do not act consistently can occur in operation, and zero sequence and negative sequence currents caused by three-phase inconsistency can have adverse effects on a system and even cause misoperation of a protection and automatic device. In order to reduce the damage to the system caused by the inconsistent three phases of the circuit breakers, the inconsistent three-phase protection (non-full-phase protection) of the circuit breakers is required to be installed, the circuit breakers with inconsistent three phases exit from operation, and the normal operation of the system is ensured.
The existing breaker three-phase inconsistent electric quantity protection of 220KV line consists of breaker failure and auxiliary protection device, operation relay device and loop element. The three-phase inconsistent protection outlet of the device shares a tripping outlet relay with the charging protection and the overcurrent protection of the device. Because the three-phase inconsistent electric quantity protection outlet of the circuit breaker shares a tripping outlet relay with the charging protection and the overcurrent protection, the three-phase inconsistent electric quantity protection starting failure loop expands the accident range, and the safe and stable operation of a power grid is endangered.
Disclosure of Invention
The invention aims to provide a three-phase inconsistent protection device of a circuit breaker, which aims to solve the technical problems, so that three-phase inconsistent protection outlets can trip, a failure loop is not started, and reclosing is locked, and the three-phase inconsistent protection standard requirements of a power system are completely met.
In order to solve the technical problem, the embodiment of the invention provides a three-phase inconsistent protection device for a circuit breaker, which comprises a circuit breaker failure and auxiliary protection device, an operation relay device and an externally-arranged intermediate relay, wherein the circuit breaker failure and auxiliary protection device comprises a first protection circuit, a second protection circuit and a third protection circuit;
the circuit breaker failure and auxiliary protection device comprises a protection device plug-in, wherein the protection device plug-in comprises a first charging protection action trip component, a first overcurrent protection action trip component, a first inconsistent protection action trip component, a second charging protection action trip component, a second overcurrent protection action trip component and a second inconsistent protection action trip component;
the input end of the first charging protection action tripping component is connected with the input end of the first overcurrent protection action tripping component in parallel and then is connected to the anode of a first control power supply; the output end of the first charging protection action tripping assembly is connected with the first end of a first charging protection action tripping pressing plate, the output end of the first overcurrent protection action tripping assembly is connected with the first end of the first overcurrent protection action tripping pressing plate, the second end of the first charging protection action tripping pressing plate is connected with the second end of the first overcurrent protection action tripping pressing plate in parallel and then is connected to the anode of a first relay coil of the operation relay device, and the cathode of the first relay coil of the operation relay device is connected with the cathode of the first control power supply;
the input end of the first inconsistent protection action tripping assembly is connected with the anode of the first control power supply, the output end of the first inconsistent protection action tripping assembly is connected with the first inconsistent protection action tripping pressing plate in series and then is connected to the anode of the first relay coil of the externally-arranged intermediate relay, and the cathode of the first relay coil of the externally-arranged intermediate relay is connected with the cathode of the first control power supply;
the input end of the second charging protection action tripping component is connected with the input end of the second overcurrent protection action tripping component in parallel and then is connected to the anode of a second control power supply; the output end of the second charging protection action tripping assembly is connected with the first end of a second charging protection action tripping pressing plate, the output end of the second overcurrent protection action tripping assembly is connected with the first end of the second overcurrent protection action tripping pressing plate, the second end of the second charging protection action tripping pressing plate and the second end of the second overcurrent protection action tripping pressing plate are connected in parallel and then connected to the anode of a second relay coil of the operation relay device, and the cathode of the second relay coil of the operation relay device is connected with the cathode of the second control power supply;
the input end of the second inconsistent protection action tripping assembly is connected with the anode of the second control power supply, the output end of the second inconsistent protection action tripping assembly is connected with the second inconsistent protection action tripping pressing plate in series and then is connected to the anode of a second relay coil of the externally-arranged intermediate relay, and the cathode of the second relay coil of the externally-arranged intermediate relay is connected with the cathode of the second control power supply.
As a preferred scheme, the input end of the first charging protection action tripping component and the input end of the first overcurrent protection action tripping component are connected in parallel and then connected to the anode of a first control power supply, specifically:
the input end of the first charging protection action tripping assembly is connected with a first terminal of the three-phase inconsistent protection device of the circuit breaker, the input end of the first overcurrent protection action tripping assembly is connected with a second terminal of the three-phase inconsistent protection device of the circuit breaker, and the first terminal and the second terminal are connected in parallel and then connected to the anode of the first control power supply.
As a preferred scheme, the input end of the first inconsistent protection action trip component is connected with the positive pole of the first control power supply, and specifically comprises:
the input end of the first inconsistent protection action tripping assembly is connected with a third terminal of the three-phase inconsistent protection device of the circuit breaker, and the third terminal is connected with the positive pole of the first control power supply.
As a preferred scheme, the input end of the second charging protection action tripping component and the input end of the second overcurrent protection action tripping component are connected in parallel and then connected to the anode of the second control power supply, specifically:
the input end of the second charging protection action tripping assembly is connected with a fourth terminal of the circuit breaker three-phase inconsistent protection device, the input end of the second overcurrent protection action tripping assembly is connected with a fifth terminal of the circuit breaker three-phase inconsistent protection device, and the fourth terminal is connected with the fifth terminal in parallel and then is connected to the anode of the second control power supply.
As a preferred scheme, the input end of the second inconsistent protection action trip assembly is connected with the positive pole of the second control power supply, specifically:
the input end of the second inconsistent protection action tripping assembly is connected with a sixth terminal of the three-phase inconsistent protection device of the circuit breaker, and the sixth terminal is connected with the positive pole of the second control power supply.
As a preferred scheme, the second end of the first charging protection action trip pressing plate is connected in parallel with the second end of the first overcurrent protection action trip pressing plate and then connected to the positive electrode of the first relay coil of the operation relay device, specifically:
the second end of the first charging protection action tripping pressing plate is connected with a seventh terminal of the three-phase inconsistent protection device of the circuit breaker, the second end of the first overcurrent protection action tripping pressing plate is connected with an eighth terminal of the three-phase inconsistent protection device of the circuit breaker, and the seventh terminal and the eighth terminal are connected in parallel and then connected to the anode of a first relay coil of the operation relay device.
As a preferred scheme, the output end of the first inconsistent protection action trip assembly is connected in series with the first inconsistent protection action trip pressing plate and then is connected to the positive pole of the first relay coil of the external intermediate relay, specifically:
the output end of the first inconsistent protection action tripping assembly is connected with the first inconsistent protection action tripping pressing plate in series and then is connected to a ninth terminal of the three-phase inconsistent protection device of the circuit breaker, and the ninth terminal is connected with the positive electrode of a first relay coil of the externally-matched intermediate relay.
As a preferred scheme, the second end of the second charging protection action trip pressing plate is connected in parallel with the second end of the second overcurrent protection action trip pressing plate and then connected to the anode of the second relay coil of the operation relay device, specifically:
the second end of the second charging protection action tripping pressing plate is connected with a tenth terminal of the three-phase inconsistent protection device of the circuit breaker, the second end of the second overcurrent protection action tripping pressing plate is connected with an eleventh terminal of the three-phase inconsistent protection device of the circuit breaker, and the tenth terminal and the eleventh terminal are connected in parallel and then connected to the anode of a second relay coil of the operation relay device.
As a preferred scheme, the output end of the second inconsistent protection action trip assembly and the second inconsistent protection action trip pressing plate are connected in series and then connected to the anode of the second relay coil of the external intermediate relay, and the method specifically comprises the following steps:
the output end of the second inconsistent protection action tripping assembly is connected with the second inconsistent protection action tripping pressing plate in series and then is connected to a twelfth terminal of the three-phase inconsistent protection device of the circuit breaker, and the twelfth terminal is connected with the anode of a second relay coil of the externally-matched intermediate relay.
As a preferred scheme, the first charging protection action trip assembly, the first overcurrent protection action trip assembly, the first inconsistent protection action trip assembly, the second charging protection action trip assembly, the second overcurrent protection action trip assembly, and the second inconsistent protection action trip assembly are sequentially arranged on the protection device plug-in.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a three-phase inconsistent protection device for a circuit breaker, which comprises a circuit breaker failure and auxiliary protection device, an operation relay device and an externally-arranged intermediate relay, wherein the circuit breaker failure and auxiliary protection device comprises a main relay, a secondary relay and a main relay; the circuit breaker failure and auxiliary protection device comprises a protection device plug-in, wherein the protection device plug-in comprises a first charging protection action trip assembly, a first overcurrent protection action trip assembly, a first inconsistent protection action trip assembly, a second charging protection action trip assembly, a second overcurrent protection action trip assembly and a second inconsistent protection action trip assembly. According to the invention, the three-phase inconsistent protection, the charging protection and the overcurrent protection trip outlet are separated by adding a protection device plug-in, additionally installing an externally-matched intermediate relay and a related pressure plate circuit connection, so that the three-phase inconsistent protection outlet can trip, a failure circuit is not started and reclosing is locked, and the three-phase inconsistent protection standard requirement of a power system is completely met.
Drawings
Fig. 1 is a schematic structural diagram of a three-phase inconsistent protection device for a circuit breaker according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, in order to solve the technical problem in the background art, in the embodiment of the present invention, a protection plug is added, an external intermediate relay and a related clamp plate loop connection are additionally installed, so as to separate the three-phase inconsistent protection, the charging protection, and the overcurrent protection trip outlet. Therefore, the three-phase inconsistent protection outlet can trip, not start a failure loop and lock a reclosing switch, the three-phase inconsistent protection standard requirement of the power system is completely met, the RCS-923A protection device and the CZX-12R1 operation relay device do not need to be upgraded and replaced according to the prior art, and the material cost is greatly saved.
Referring to fig. 1, an embodiment of the present invention provides a three-phase inconsistent protection device for a circuit breaker, including a circuit breaker failure and auxiliary protection device (RCS-923A protection device), an operation relay device (CZX-12R1 operation relay device), and an external intermediate relay;
the circuit breaker failure and auxiliary protection device comprises a protection device plug-in (A # plug-in), wherein the protection device plug-in comprises a first charging protection action trip component, a first overcurrent protection action trip component, a first inconsistent protection action trip component, a second charging protection action trip component, a second overcurrent protection action trip component and a second inconsistent protection action trip component; in the embodiment of the present invention, as a preferable scheme, the first charging protection action trip component, the first overcurrent protection action trip component, the first inconsistent protection action trip component, the second charging protection action trip component, the second overcurrent protection action trip component, and the second inconsistent protection action trip component are sequentially arranged on the protection device plug-in board.
The input end (A17) of the first charging protection action tripping assembly is connected with a first terminal (8D48) of the three-phase inconsistent protection device of the circuit breaker, the input end (A01) of the first overcurrent protection action tripping assembly is connected with a second terminal (8D49) of the three-phase inconsistent protection device of the circuit breaker, and the first terminal (8D48) and the second terminal 8D49) are connected in parallel and then are connected to the positive pole of the first control power supply; the output terminal (A18) of the first charging protection action trip assembly is connected with the first terminal of the first charging protection action trip pressure plate (8LP10), the output end (A02) of the first overcurrent protection action tripping assembly is connected with the first end of a first overcurrent protection action tripping pressure plate (8LP11), a second end of the first charging protection action trip pressure plate (8LP10) is connected with a seventh terminal (8D56) of the three-phase inconsistent protection device of the circuit breaker, the second end of the first overcurrent protection action tripping pressure plate (8LP11) is connected with an eighth terminal (8D57) of the three-phase inconsistent protection device of the circuit breaker, the seventh terminal (8D56) is connected to the positive electrode of the first relay coil (1TJR) of the operation relay device after being connected in parallel with the eighth terminal (8D57), a negative electrode of a first relay coil (1TJR) of the operation relay device is connected to a negative electrode of the first control power supply;
the input end (A13) of the first inconsistent protection action tripping assembly is connected with a third terminal (8D50) of the three-phase inconsistent protection device of the circuit breaker, the third terminal (8D50) is connected with the positive pole of the first control power supply, the output end (A14) of the first inconsistent protection action tripping assembly is connected with a first inconsistent protection action tripping pressing plate (8LP12) in series and then is connected to a ninth terminal (8D58) of the three-phase inconsistent protection device of the circuit breaker, the ninth terminal (8D58) is connected with the positive pole of a first relay coil (1TJF) of the externally-matched intermediate relay, and the negative pole of the first relay coil (1TJF) of the externally-matched intermediate relay is connected with the negative pole of the first control power supply;
the input end (A19) of the second charging protection action tripping assembly is connected with a fourth terminal (8D51) of the three-phase inconsistent protection device of the circuit breaker, the input end (A03) of the second overcurrent protection action tripping assembly is connected with a fifth terminal (8D52) of the three-phase inconsistent protection device of the circuit breaker, and the fourth terminal (8D51) and the fifth terminal (8D52) are connected in parallel and then are connected to the positive pole of the second control power supply; an output terminal (A20) of the second charging protection action trip assembly is connected with a first terminal of a second charging protection action trip pressure plate (8LP13), the output end (A04) of the second overcurrent protection action tripping assembly is connected with the first end of a second overcurrent protection action tripping pressure plate (8LP14), a second end of the second charging protection action trip pressure plate (8LP13) is connected with a tenth terminal (8D59) of the breaker three-phase inconsistent protection device, the second end of the second overcurrent protection action tripping pressure plate (8LP14) is connected with an eleventh terminal (8D60) of the three-phase inconsistent protection device of the circuit breaker, the tenth terminal (8D59) is connected to the positive electrode of the second relay coil (2TJR) of the operation relay device after being connected in parallel with the eleventh terminal (8D60), a negative electrode of a second relay coil (2TJR) of the operation relay device is connected to a negative electrode of the second control power supply;
input (A15) of the inconsistent protection action trip subassembly of second be with the circuit breaker three-phase inconsistent protection device's sixth terminal (8D53) is connected, sixth terminal (8D53) with the anodal of second control power supply is connected, the output (A16) of the inconsistent protection action trip subassembly of second is connected to after inconsistent protection action trip clamp plate (8LP15) series connection of second is connected to the twelfth terminal (8D61) of the inconsistent protection device of circuit breaker three-phase, twelfth terminal (8D61) with the anodal of the second relay coil (2TJF) of outer auxiliary relay is connected, the negative pole of the second relay coil (2TJF) of outer auxiliary relay with the negative pole of second control power supply is connected.
Based on the above scheme, the following detailed description is provided for better understanding of the embodiments of the present invention:
1. an A # plug-in is added to an RCS-923A device, a relevant handle seat and a relevant wiring of the A # plug-in are added, and a relevant wiring of 8LP10-15 is added, so that three-phase inconsistent protection, charging protection and overcurrent protection tripping outlets are separated. The three-phase inconsistent protection outlet starts newly-installed external inconsistent tripping re-starting relays 1TJF and 2 TJF; the outlet of the charging protection and the overcurrent protection starts the TJR relay of the original operation relay device to trip (start failure).
2. And (3) adding an external three-phase inconsistent tripping re-starting relay: 1TJF and 2TJF are respectively started by a first outlet and a second outlet which are respectively protected by three-phase inconsistency of an RCS-923A device, and the 1TJF and 2TJF starting tripping circuit does not start a failure circuit and locks reclosure.
The specific starting loop is shown in figure 1: a positive electricity of a control power supply is controlled to pass through a 8D50 terminal, an RCS-923A device A13 terminal three-phase inconsistent one protection joint (BYZ1) -8LP12 inconsistent actuation as a tripping one pressing plate-8D 58 terminal, an external intermediate relay 1TJF coil positive pole terminal start 1TJF three-phase inconsistent protection one outlet [ the control power supply is controlled to pass through a negative electricity connection 1TJF coil negative pole terminal ]; the positive of a control power supply II is connected with a three-phase inconsistent two-protection joint (BYZ2) -8LP15 inconsistent action tripping two pressing plates-8D 61 terminal-an externally-matched intermediate relay 2TJF coil positive terminal starting 2TJF three-phase inconsistent protection two outlet [ the control power supply II is connected with a negative electricity 2TJF coil negative terminal ] through an 8D53 terminal-RCS-923A device A15 terminal.
Note that, in the figure, the relationship between the terminals 8D48 and 8D49 is: the shorted shunt is an electrical connection point indicating that the charge protection action trip-one and the over-current protection action trip-loops share a trip outlet loop (or gate logic) to activate the 1TJR trip override relay. The connection mode and the working principle are as follows:
a positive terminal of a control power supply is connected with a negative terminal of a control power supply through a 8D48 terminal, an RCS-923A device A17 terminal charging protection-action contact (CD1) -8LP10 charging protection action tripping-pressing plate-8D 56 terminal-CZX-12R 1 operation relay device 1TJR relay coil positive terminal start-up 1TJR outlet relay [ the control power supply is connected with a negative terminal of a 1TJR coil negative terminal ];
a positive terminal of a control power supply is connected with an overcurrent protection-action contact (GL1) -8LP11 overcurrent protection action tripping-pressing plate-8D 57 terminal-CZX-12R 1 operation relay device 1TJR relay coil positive terminal starting 1TJR outlet relay [ the negative terminal of the control power supply is connected with a negative terminal of a 1TJR coil ] through an 8D49 terminal-RCS-923A device A01 terminal;
in addition, the 8D56 terminal is related to the 8D57 terminal: the shorted shunt is an electrical connection point indicating that the charge protection action trip-one and the over-current protection action trip-loops share a trip outlet loop (or gate logic) to activate the 1TJR trip override relay.
The 8LP11 pressure plate is connected to 8D56 through 8D57, then 8LP10, 8LP11 trip, is to activate CZX-12R1 device 1TJR relay, will activate the failure loop [ activated through 1TJR relay normally open contact ].
The following specific examples are listed to illustrate the working principle of the device provided by the scheme, and the improved example of the three-phase inconsistent electric quantity protection device of the breaker of the 220KV Zhuyu first line in the Zhujiang power plant is as follows:
the RCS-923A device is additionally provided with an A # plug-in unit, the related handle seat and the related wiring of the A # plug-in unit are added, the related wiring of 8LP10-8LP15 protection trip outlet pressure plates is added, and three-phase inconsistent protection, charging protection and overcurrent protection trip outlets are separated. The three-phase inconsistent protection outlet starts two newly-installed external inconsistent tripping re-starting relays 1TJF and 2TJF, so that the three-phase inconsistent protection outlet can trip, does not start a failure loop and locks a re-closing switch; the charging protection and overcurrent protection outlet starts the original CZX-12R1 to operate the TJR relay of the relay device to trip (the contact of the relay device starts a failure loop, the outlet trips and is locked to be reclosed). The three-phase inconsistent protection standard requirements of the power system are completely met, the RCS-923A protection device and the CZX-12R1 operation relay device do not need to be upgraded and replaced according to the prior art, and the material cost is greatly saved.
Compared with the prior art, the embodiment of the invention has the following advantages:
three-phase inconsistent protection is separated from a charging protection and overcurrent protection tripping outlet, so that the accident expansion caused by starting a failure loop is avoided, and reclosing can be locked. Only one protection device plug-in unit, two intermediate relays and simple wiring are needed to be added, and the protection device and the operation relay device do not need to be replaced. If the RCS-923A protection device and the CZX-12R operation relay device are completely upgraded and replaced according to the prior art, the technical scheme of the invention can greatly save the material cost, the engineering construction amount and the labor cost of the device if popularized and applied.
The embodiment of the invention is characterized in that: a # plug-in is added to an RCS-923A device, and a seat, a pressing plate and a wiring are related to separate three-phase inconsistent protection, charging protection and overcurrent protection tripping outlets. The three-phase inconsistent protection outlet starts a newly-installed external inconsistent tripping re-action relay DSP2-4A type, and the TJF re-action relay starts a tripping loop and locks a re-closing circuit to not start a failure loop. The charge protection and overcurrent protection outlet starts an TJR relay of the original operation relay device. The scheme of the invention can be realized without replacing the RCS-923A protective device and the CZX-12R operation relay device.
It should be noted that after the improvement of the embodiment of the invention is implemented, through the transmission test and the middle adjustment and acceptance of the whole group of the RCS-923A protection device, the three-phase inconsistent electric quantity protection cannot start a failure loop to expand the accident range, and the new standard requirement of the three-phase inconsistent protection of the power system is completely met.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A three-phase inconsistent protection device of a circuit breaker is characterized by comprising a circuit breaker failure and auxiliary protection device, an operation relay device and an externally-matched intermediate relay;
the circuit breaker failure and auxiliary protection device comprises a protection device plug-in, wherein the protection device plug-in comprises a first charging protection action trip component, a first overcurrent protection action trip component, a first inconsistent protection action trip component, a second charging protection action trip component, a second overcurrent protection action trip component and a second inconsistent protection action trip component;
the input end of the first charging protection action tripping component is connected with the input end of the first overcurrent protection action tripping component in parallel and then is connected to the anode of a first control power supply; the output end of the first charging protection action tripping assembly is connected with the first end of a first charging protection action tripping pressing plate, the output end of the first overcurrent protection action tripping assembly is connected with the first end of the first overcurrent protection action tripping pressing plate, the second end of the first charging protection action tripping pressing plate is connected with the second end of the first overcurrent protection action tripping pressing plate in parallel and then is connected to the anode of a first relay coil of the operation relay device, and the cathode of the first relay coil of the operation relay device is connected with the cathode of the first control power supply;
the input end of the first inconsistent protection action tripping assembly is connected with the anode of the first control power supply, the output end of the first inconsistent protection action tripping assembly is connected with the first inconsistent protection action tripping pressing plate in series and then is connected to the anode of the first relay coil of the externally-arranged intermediate relay, and the cathode of the first relay coil of the externally-arranged intermediate relay is connected with the cathode of the first control power supply;
the input end of the second charging protection action tripping component is connected with the input end of the second overcurrent protection action tripping component in parallel and then is connected to the anode of a second control power supply; the output end of the second charging protection action tripping assembly is connected with the first end of a second charging protection action tripping pressing plate, the output end of the second overcurrent protection action tripping assembly is connected with the first end of the second overcurrent protection action tripping pressing plate, the second end of the second charging protection action tripping pressing plate and the second end of the second overcurrent protection action tripping pressing plate are connected in parallel and then connected to the anode of a second relay coil of the operation relay device, and the cathode of the second relay coil of the operation relay device is connected with the cathode of the second control power supply;
the input end of the second inconsistent protection action tripping assembly is connected with the anode of the second control power supply, the output end of the second inconsistent protection action tripping assembly is connected with the second inconsistent protection action tripping pressing plate in series and then is connected to the anode of a second relay coil of the externally-arranged intermediate relay, and the cathode of the second relay coil of the externally-arranged intermediate relay is connected with the cathode of the second control power supply.
2. The three-phase inconsistent protection device of the circuit breaker according to claim 1, wherein the input terminal of the first charging protection action trip assembly is connected in parallel with the input terminal of the first overcurrent protection action trip assembly and then connected to the positive electrode of a first control power supply, specifically:
the input end of the first charging protection action tripping assembly is connected with a first terminal of the three-phase inconsistent protection device of the circuit breaker, the input end of the first overcurrent protection action tripping assembly is connected with a second terminal of the three-phase inconsistent protection device of the circuit breaker, and the first terminal and the second terminal are connected in parallel and then connected to the anode of the first control power supply.
3. The three-phase inconsistent protection device of the circuit breaker according to claim 1, wherein the input terminal of the first inconsistent protection action trip assembly is connected to the positive terminal of the first control power supply, specifically:
the input end of the first inconsistent protection action tripping assembly is connected with a third terminal of the three-phase inconsistent protection device of the circuit breaker, and the third terminal is connected with the positive pole of the first control power supply.
4. The three-phase inconsistent protection device of the circuit breaker according to claim 1, wherein the input terminal of the second charging protection action trip assembly and the input terminal of the second overcurrent protection action trip assembly are connected in parallel and then connected to the positive electrode of a second control power supply, specifically:
the input end of the second charging protection action tripping assembly is connected with a fourth terminal of the circuit breaker three-phase inconsistent protection device, the input end of the second overcurrent protection action tripping assembly is connected with a fifth terminal of the circuit breaker three-phase inconsistent protection device, and the fourth terminal is connected with the fifth terminal in parallel and then is connected to the anode of the second control power supply.
5. The three-phase inconsistent protection device of the circuit breaker according to claim 1, wherein the input terminal of the second inconsistent protection action trip assembly is connected to the positive terminal of the second control power supply, specifically:
the input end of the second inconsistent protection action tripping assembly is connected with a sixth terminal of the three-phase inconsistent protection device of the circuit breaker, and the sixth terminal is connected with the positive pole of the second control power supply.
6. The three-phase inconsistent protection device of the circuit breaker according to claim 1, wherein the second end of the first charging protection action trip pressing plate is connected in parallel with the second end of the first overcurrent protection action trip pressing plate and then connected to the positive electrode of the first relay coil of the operation relay device, specifically:
the second end of the first charging protection action tripping pressing plate is connected with a seventh terminal of the three-phase inconsistent protection device of the circuit breaker, the second end of the first overcurrent protection action tripping pressing plate is connected with an eighth terminal of the three-phase inconsistent protection device of the circuit breaker, and the seventh terminal and the eighth terminal are connected in parallel and then connected to the anode of a first relay coil of the operation relay device.
7. The three-phase inconsistent protection device of the circuit breaker according to claim 1, wherein the output terminal of the first inconsistent protection action trip assembly and the first inconsistent protection action trip pressing plate are connected in series and then connected to the positive electrode of the first relay coil of the external intermediate relay, specifically:
the output end of the first inconsistent protection action tripping assembly is connected with the first inconsistent protection action tripping pressing plate in series and then is connected to a ninth terminal of the three-phase inconsistent protection device of the circuit breaker, and the ninth terminal is connected with the positive electrode of a first relay coil of the externally-matched intermediate relay.
8. The three-phase inconsistent protection device of the circuit breaker according to claim 1, wherein the second end of the second charging protection action trip pressing plate and the second end of the second overcurrent protection action trip pressing plate are connected in parallel and then connected to the anode of the second relay coil of the operation relay device, specifically:
the second end of the second charging protection action tripping pressing plate is connected with a tenth terminal of the three-phase inconsistent protection device of the circuit breaker, the second end of the second overcurrent protection action tripping pressing plate is connected with an eleventh terminal of the three-phase inconsistent protection device of the circuit breaker, and the tenth terminal and the eleventh terminal are connected in parallel and then connected to the anode of a second relay coil of the operation relay device.
9. The three-phase inconsistent protection device of the circuit breaker according to claim 1, wherein the output end of the second inconsistent protection action trip assembly and the second inconsistent protection action trip pressing plate are connected in series and then connected to the positive electrode of the second relay coil of the external intermediate relay, specifically:
the output end of the second inconsistent protection action tripping assembly is connected with the second inconsistent protection action tripping pressing plate in series and then is connected to a twelfth terminal of the three-phase inconsistent protection device of the circuit breaker, and the twelfth terminal is connected with the anode of a second relay coil of the externally-matched intermediate relay.
10. The circuit breaker three-phase inconsistent protection device of any of claims 1-9, wherein the first charging protection action trip assembly, the first over-current protection action trip assembly, the first inconsistent protection action trip assembly, the second charging protection action trip assembly, the second over-current protection action trip assembly, and the second inconsistent protection action trip assembly are arranged in sequence on the protection device plug-in.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113507072A (en) * | 2021-07-04 | 2021-10-15 | 国网辽宁省电力有限公司锦州供电公司 | Method for replacing 10kV relay protection device in live mode |
| CN114146987A (en) * | 2021-11-30 | 2022-03-08 | 广州发展电力科技有限公司 | Wind driven generator rotor grounding processing method and system and computer equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1212419A (en) * | 1967-04-13 | 1970-11-18 | Cge Spa | Improvements relating to electrical protective arrangements |
| CN103746349A (en) * | 2014-01-03 | 2014-04-23 | 浙江省电力设计院 | Circuit breaker failure protection mechanism of transformer substation and optimal configuration method for circuit breaker protection |
| CN107634507A (en) * | 2017-10-17 | 2018-01-26 | 大唐韩城第二发电有限责任公司 | A kind of method and circuit of breaker unbalanced three-phase lines actuating breaker failure protection |
| CN207896642U (en) * | 2018-02-12 | 2018-09-21 | 山西崇光发电有限责任公司 | A kind of overcurrent relay protection trip circuit after station DC supply interruption |
| CN110880742A (en) * | 2019-12-13 | 2020-03-13 | 深圳供电局有限公司 | A high-voltage circuit breaker body three-phase inconsistent protection secondary circuit structure |
| CN210273491U (en) * | 2019-07-09 | 2020-04-07 | 浙江南名电力科技有限公司 | Microcomputer protection measurement and control device |
| CN213602409U (en) * | 2020-12-17 | 2021-07-02 | 广州发展电力科技有限公司 | Circuit breaker three-phase inconsistent protection device |
-
2020
- 2020-12-17 CN CN202011514041.4A patent/CN112582995B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1212419A (en) * | 1967-04-13 | 1970-11-18 | Cge Spa | Improvements relating to electrical protective arrangements |
| CN103746349A (en) * | 2014-01-03 | 2014-04-23 | 浙江省电力设计院 | Circuit breaker failure protection mechanism of transformer substation and optimal configuration method for circuit breaker protection |
| CN107634507A (en) * | 2017-10-17 | 2018-01-26 | 大唐韩城第二发电有限责任公司 | A kind of method and circuit of breaker unbalanced three-phase lines actuating breaker failure protection |
| CN207896642U (en) * | 2018-02-12 | 2018-09-21 | 山西崇光发电有限责任公司 | A kind of overcurrent relay protection trip circuit after station DC supply interruption |
| CN210273491U (en) * | 2019-07-09 | 2020-04-07 | 浙江南名电力科技有限公司 | Microcomputer protection measurement and control device |
| CN110880742A (en) * | 2019-12-13 | 2020-03-13 | 深圳供电局有限公司 | A high-voltage circuit breaker body three-phase inconsistent protection secondary circuit structure |
| CN213602409U (en) * | 2020-12-17 | 2021-07-02 | 广州发展电力科技有限公司 | Circuit breaker three-phase inconsistent protection device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113507072A (en) * | 2021-07-04 | 2021-10-15 | 国网辽宁省电力有限公司锦州供电公司 | Method for replacing 10kV relay protection device in live mode |
| CN113507072B (en) * | 2021-07-04 | 2023-02-14 | 国网辽宁省电力有限公司锦州供电公司 | Method for replacing 10kV relay protection device in live mode |
| CN114146987A (en) * | 2021-11-30 | 2022-03-08 | 广州发展电力科技有限公司 | Wind driven generator rotor grounding processing method and system and computer equipment |
| CN114146987B (en) * | 2021-11-30 | 2022-11-29 | 广州发展电力科技有限公司 | Wind driven generator rotor grounding processing method and system and computer equipment |
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| CN112582995B (en) | 2024-07-23 |
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