JPH09163638A - Switch controlling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform the change of a program in a short time without performing the exchange of the memory on a pillar or the like at the time of changing a program by rewriting a program inside a memory in conformity with the information from a radio receiving means. SOLUTION: When the change of a control program becomes necessary, workers operate a portable operation device 15 on the ground to transmit a function changing command to a switch controlling device 12 installed on a pillar from an operation device transmitting and receiving means. When it is received by a control device transmitting and receiving means 14, a CPU is switched over to the state of rewriting a program to transmit a reply to the portable operation device 15 from the control device transmitting and receiving means 14. When the reply is received, a changed program is transmitted from the portable operation device 15. The program of a memory 19 is rewritten by the function changing means of the CPU on the basis of the receiving of the program Therefore, the change of a program can easily be performed in a short time without performing the exchange of a memory.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch control device having a computer structure for monitoring and controlling a section switch of a distribution line.

[0002]

2. Description of the Related Art Conventionally, in a three-phase power distribution system, the switchgear shown in FIG. 4 is generally attached to a utility pole. This conventional switchgear on a pole is a partition switch (a switch on the pole for partitioning the distribution line 1). 2) and a switch control device 3 having a microcomputer configuration for remotely monitoring and controlling the switch 2. The switch 2 is formed in an airtight structure for waterproofing.

The switch control device 3 has a pair of power receiving terminals A1 and C1, A2 and C2 for receiving and detecting power.
Then, the single-phase control power supply of the transformers 4 and 5 based on the system power supply of the distribution line 1 on the upstream side (the substation side) and the downstream side (the load side) of the division switch 2 is supplied to operate.

Further, the switch control device 3 is provided with a control processing unit 6 formed by using a microcomputer or the like, and this control processing unit 6 stores a monitoring and control program (remote monitoring control program) held in a memory. Based on the execution, it has the following switch control function, status monitoring function, communication function, etc.

(I) Switch control function This is a function of controlling the opening and closing of the sectional switch 2 via the control cable 7.

(Ii) State monitoring function The state of the division switch 2 is monitored from the signal of the auxiliary contact of the division switch 2 via the control cable 7, and the transformers 4, 5
It is a function of monitoring the state of the system voltage upstream and downstream of the division switch 2 from the voltage of the secondary side and detecting a system fault.

(Iii) Communication function Information on remote monitoring control is transmitted by polling communication with a master station for status monitoring control provided in a business office of a power company via a communication line 9 connected to a communication terminal section 8. It is a function to exchange.

Then, normally, the control processing unit 6 opens and closes the partition switch 2 based on the status monitoring of the system of the partition switch 2 and the distribution line 1 and information from the master station.

Incidentally, the switch control device 3 is provided on the outside thereof with the operation lever 10 in order to perform an opening / closing operation (on-site operation) and a status display (on-site display) during on-site work such as installation test, maintenance and inspection of the switchgear. And a plurality of status indicators 11 are attached.

On the other hand, in the case of a three-phase power distribution system (ground power distribution system) buried in the ground, the switch control device 3 is housed in a casing and installed on the ground.

[0011]

The conventional device 3 shown in FIG.
In case of, the monitoring and control programs are read-only ROM
If the program for monitoring and control needs to be changed after installation due to function upgrades, specification changes, etc., it will be dropped from the utility pole or removed from the installation chassis on the ground and taken to the factory. , ROM exchange, etc. must be performed.

Therefore, it is necessary to disassemble the device, carry it to the factory, and disassemble the ROM for replacement in the factory.
After rewriting the program by replacement, basic performance tests such as device assembly, airtightness test and pressure resistance test, transportation to the site, work of remounting columns, etc. are required, which requires a great deal of labor and time. There is a problem that work efficiency is extremely poor.

According to the present invention, the function of monitoring a switchgear control device of this kind accompanying a function change and a specification change, and a change of a control program are required to replace a memory such as a descending pillar which requires a great deal of labor and time in the related art. The purpose is to make it easy and quick.

[0014]

In order to achieve the above object, in the switch control device according to claim 1, a rewritable non-volatile memory for holding a program for monitoring and controlling the section switch, The microcomputer executes a program in the memory to monitor and control the division switch, a wireless transmission / reception unit for communicating with an external device, and a control processing unit, which is provided in the control processing unit and receives a function change command of the wireless transmission / reception unit. And a function changing unit for rewriting the program of the memory according to the reception information of the wireless transmission / reception unit.

Therefore, the change of the monitoring and control program does not require the conventional replacement work of the memory such as the descending pillar and the transportation, but the internal memory is rewritten by the wireless communication with the external device on the ground while the pillar is installed. Is done.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the entire circuit configuration. In the figure, the same reference numerals as those in FIG.
Is a switch control device, 13 is a switch control device 12
Is a control processing unit provided in the, and is formed by a microcomputer or the like. Reference numeral 14 denotes a wireless transmission / reception means (hereinafter referred to as a control device transmission / reception means) provided in the switch control device 12, which uses a light such as an infrared ray, a radio wave, or a sound wave such as an ultrasonic wave as a medium as a portable operation device as an external device described later. Communicate with.

Reference numeral 15 denotes a portable operation device as an external device carried by a worker, which is formed in the same manner as a so-called handy terminal, and is provided with an operation unit 16 including a numeric keypad and a display unit 17 including a liquid crystal display device. , Which has a processing means for operation / display and the like formed by a microcomputer, a wireless transmission / reception means and the like, and is operated by an internal battery.

The wireless transmission / reception means of the portable operation device 15 (hereinafter referred to as the operation device transmission / reception means) transmits various kinds of command information such as the control command of the sectional switch 2 according to the operation of the operation section 16 to the switch control device 12. Wirelessly to this device 12
The wireless signal of the reply such as the status monitoring information of the system of the section switch 2 and the distribution line 1 is received from the display section 17
To be displayed.

On the other hand, the control processing unit 1 of the switch controller 12
3 is formed as shown in FIG. 2, in which 18 is an arithmetic unit (hereinafter referred to as CPU) of a microcomputer, 19 is a rewritable non-volatile memory bus-coupled to the CPU 18, and is composed of an EEPROM, Monitor and control programs and monitor and control status data are written and retained.

Reference numeral 20 is a read-only memory (ROM) connected to the CPU 18 by a bus, and holds a basic program of the CPU 18 and a program (rewriting program) for rewriting the monitoring and control programs of the memory 19. Reference numeral 21 is a rewritable memory (RAM) for working which is connected to the CPU 18 by a bus.

Reference numeral 22 denotes a communication interface for remote monitoring and control between the CPU 18 and the modem 23 of the communication terminal section 8, and 24.
Is a communication interface for wireless communication between the CPU 18 and the modem 25 of the control device transmitting / receiving means 14.

In the case of installation on a pillar, the section switch 2,
The switch control device 12 and the like are mounted as shown in FIG. 3, the division switch 2 is attached to the uppermost part of the power pole 26 through which the distribution line 1 passes, and the switch control device 12 controls the power pole 2 through which the communication line 9 passes.
It is mounted at a mid height position of 6. Further, the transformers 4 and 5 are the section switch 2 of the electric pole 26 and the switch control device 12
Mounted at a position approximately midway between and.

In FIG. 3, 27 is a lightning arrester for protecting the distribution line provided for each phase of the distribution line 1 on the upstream side and the downstream side of the switchgear 2, and 28 is the communication terminal section 8 of the switch control device 12. A branch box for connecting the service line to the communication line 9 is a worker carrying the portable operating device 15.

On the other hand, the program for monitoring and controlling the memory 19 is obtained by adding a program for communicating with the portable operation unit 15 via the control device transmitting / receiving means 14 to the program for monitoring and controlling the conventional device 3 shown in FIG. It is formed.

The conventional monitoring / control program is written and held in the same ROM as the memory 20. However, the monitoring / control program of this embodiment is changed without replacing the ROM. , And is written and held in the memory 19 having the EEPROM structure together with the control status data.

At this time, since the memory 19 is composed of an EEPROM, there is almost no erroneous change in the stored contents due to external noise or the like, and the reliability of holding the program is higher than when using a RAM or the like.

The rewriting program for rewriting the monitoring and control program may be held in the memory 19, but by holding it in the memory 20 having the ROM structure, the program can be held with higher reliability.

During operation, the CPU 18 keeps the memory 19
By executing the monitoring and control program stored in the switch controller 12, the switch controller 12 operates in substantially the same manner as the conventional device 3 of FIG.
The section switch 2 is remotely monitored and controlled.

Next, when it is necessary to change the monitoring and control programs due to function upgrades, specification changes, etc. after the pillars are installed, the worker 29 goes to the site and the portable operating device 1 on the ground.
5 is operated, and the function change command is transmitted from the operator transmission / reception means to the switch control device 12 on the pillar.

At this time, the switch control device 12 receives the function change command by the control device transmitting / receiving means 14, and based on this reception, the CPU 18 shifts from the normal monitoring and control state to the function change state in which the program is rewritten. And memory 2
0 program is read and executed, and this execution causes CP
U18 operates as a function changing means.

Then, when a reply is transmitted from the control device transmitting / receiving means 14 to the portable operation device 15 under the control of the CPU 18, and the display unit 17 displays that the switch control device 12 is in the function changed state, A new monitoring or control program (whole) or a changed portion program (part) formed by reading from a floppy disk or the like or operating the operation unit 16 is transmitted from the portable operation unit 15.

Further, based on the reception of these programs, the function changing means of the CPU 18 causes the memory 19
The monitoring and control program of is rewritten and automatically changed (updated).

When this change is completed, a reply indicating the completion of the change is transmitted from the control device transmitting / receiving means 14 to the portable operation device 15, and the completion of the change is displayed on the display unit 17 of the portable operation device 15 upon receipt of this reply. Switch control device 12
The function upgrade and specification change of are completed.

Thereafter, for example, the CPU 18 executes the changed monitoring and control program based on the reception of the monitoring and control start command from the portable operation unit 15, and the remote monitoring control of the sectional switch 2 is restarted. .

Therefore, the pillars for the conventional ROM replacement, transportation, disassembly and assembly after the ROM replacement, performance test,
Portable type operating device 1 without carrying out work such as transportation and remounting pillars
By the wireless communication based on the operation of 5, the switch controller 12
It is possible to rewrite the monitoring and control programs in the state of the pillars, improve their functions, change specifications, etc., which significantly reduces the work effort and work time.

The internal structure of the control processing unit 13 is shown in FIG.
Needless to say, the present invention can be applied to a case different from the above, and at this time, the rewritable nonvolatile memory for holding the monitoring and control programs may be other than the EEPROM.

Further, the communication system and the like between the control device transmitting / receiving means 14 of the switch control device 12 and the operating device transmitting / receiving means of the portable operation device 15 may be any method.

Furthermore, if an external device as a maintenance device is formed as a portable device such as the portable operation device 16, it is easy to carry and handle, but the external device may be a so-called stationary type or an on-vehicle type. Of course, it can be.

The present invention is applicable to not only switch control devices mounted on utility poles but also monitoring and control programs of various switch control devices such as switch control devices of underground power distribution systems installed on the ground. it can.

[0040]

The present invention has the following effects. The monitoring and control programs are held in a rewritable non-volatile memory, and monitoring is performed by upgrading functions or changing specifications.
When it is necessary to change the control program, based on the wireless communication between the external device and the wireless transmission / reception means, the function change means of the control processing unit rewrites the memory monitoring / control program according to the received information. It is extremely easy to change this program without performing the labor-consuming and time-consuming work such as the conventional pillars for carrying out ROM replacement, transportation, disassembly and assembly after ROM replacement, performance tests, transportation, and remounting columns. It can be performed in a short time and the working efficiency is significantly improved.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of one embodiment of the present invention.

2 is a detailed circuit block diagram of a part of FIG. 1. FIG.

FIG. 3 is an explanatory diagram of use in a mounted state of FIG. 1.

FIG. 4 is a circuit block diagram of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Distribution line 2 Division switch 13 Control processing part 14 Wireless transmission / reception means 15 Portable operation device as an external device 18 Microcomputer (CPU) 19 Nonvolatile memory

Claims (1)

[Claims] 1. A switch controller for monitoring and controlling a section switch of a distribution line, comprising a rewritable non-volatile memory for holding the monitor and control program, and a program of the memory executed by a microcomputer. Control processing section for monitoring and controlling the section switch, wireless transmission / reception means for communicating with an external device, and the control processing section. A switch control device comprising: a function changing unit that rewrites according to information received by a wireless transmitting / receiving unit.