JPH05227663A - Failure restoration apparatus for railroad power system - Google Patents

Abstract

PURPOSE:To implement the automatic replacement control at the time of failure by recognizing the switching status of each of the breakers and isolators, and the status of various protection relays at a plurality of railroad substations, determining the operational state and operation schedule of the related equipment at the time of the failure, and executing the replacement control by determining the priority of the replacing equipment in accordance with the result of such determination. CONSTITUTION:The status recognition means 4A of an electronic computer 4 fetches the status data of each of the system facilities at all times through a remote monitoring control apparatus 3. When a failure occurs in a substation, the status change data of a breaker is fetched into the status recognition means 4A. In continuation, schedule determining means 4B fetches the operational state and operation schedule of the related equipment from a storage 5. Further, restoration control means 4C determines the priority of the replacing equipment, and makes the control demands through the remote monitoring control apparatus 3 for executing the replacement control. In this way, it is possible to automatically control the monitoring and the replacement at the time of failure without increasing the burden on the operator's side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a railway electric power system accident recovery device for monitoring the state of the electric power system of a large number of electric railway substations (hereinafter simply referred to as substations).

[0002]

2. Description of the Related Art An electric power system for an electric railway is installed along a railroad track, so that it is very long in terms of distance. Therefore,
In order to keep the voltage drop of the feeder that supplies electric power to each electric vehicle low, many substations must be installed along the way.
Conventionally, it is general that the status data of each substation is concentrated in a centralized monitoring control room (hereinafter referred to as a command station), and the command station centrally monitors and controls the data. FIG. 5 is a schematic configuration diagram of a conventional power system monitoring device of this type. In the figure, remote monitoring control device slave stations (hereinafter simply referred to as slave stations) 1A to 1N provided at each substation are remote monitoring control device master stations provided at the command station by transmission lines 2A to 2N, respectively. (Less than,
It is connected to 3). An operation console 6 and a system monitoring board 7 are connected to the master station 3 of the command center. Here, the status data of each system equipment is transmitted from the slave stations 1A to 1N to the master station 3 via the transmission paths 2A to 2N. Further, the information necessary for monitoring the data transmitted to the master station 3 is output to the system monitoring board 7 and the status thereof is displayed.

On the other hand, when operating each system equipment, a corresponding signal is input to the master station 3 by operating the device selection switch and the device control switch of the console 6, and further,
After transmission from the master station 3 to the slave stations 1A to 1N via the transmission lines 2A to 2N, an operation command is output from the slave stations 1A to 1N to each system equipment to perform a desired operation. Among the substations for electric railways, important equipment (rectifiers, transformers, etc.) is multiplexed and the operating time and number of operating vehicles are determined by the train operation schedule.
When an accident occurs in the rectifier or transformer in such a situation, the operator determines the rectifier to be replaced and turns on the rectifier so as not to affect the operation of the train.

[0004]

When an accident occurs in the equipment of each substation as described above (hereinafter, a rectifier (SR) is taken as an example of a typical equipment for explanation), the operator makes a spare SR ( It changes every hour every day), but after determining in a short time whether it is in its own substation or whether it is necessary to turn on SR of another substation to exchange power, alternative control for restoration is performed. Was running. At present, since monitoring control of the entire electric railway power system is performed by using the operator console 6 according to the operator's judgment, the operator's burden is heavy, and the operator must always be aware of the time, resulting in erroneous operation control. There was a possibility that there was a problem with safety. The present invention has been made in view of the above circumstances, and by automatically inputting the operating time, the number of operating vehicles, and the operating priority with an electronic computer without increasing the burden on the operator, the monitoring control and the time of an accident are automatically performed. It is an object of the present invention to provide an electric power system accident recovery device for electric railways that can perform the alternative control of.

[0005]

In order to achieve the above object, the present invention provides a state recognition means for recognizing the open / closed state of each breaker, disconnector, etc. of a plurality of electric railway substations and the state of various protection relays. , A schedule judgment means for judging the operating state and operation schedule of related equipment when an accident involving a trip of a circuit breaker occurs in this power system, and the priority of the equipment to be replaced by the judgment result of this schedule judgment means And a recovery control means for performing alternative control according to this priority.

[Operation] The load on the operator is increased by judging the priority of the device to be replaced by the schedule judging means based on the trip accident information of the circuit breaker taken in by the state recognizing means and performing the alternative control by the recovery control means. Without this, it is possible to perform safer accident recovery control than before.

[0006]

Embodiments will be described below with reference to the drawings. Figure 1
Is a configuration diagram of an embodiment of the electric power system accident recovery device for electric railway according to the present invention. The same portions as those in FIG. 5 are denoted by the same reference numerals and the description thereof will be omitted, and different portions will be described here. In the present embodiment, the state data of each system equipment is taken into the computer 4 via the master station 3. The electronic computer 4 comprises a state recognition means 4A, a schedule determination means 4B, and a restoration control means 4C. Next, each means in the computer will be described in detail. When an accident occurs in the substation, the state change data of the breaker is taken into the state recognition means 4A. As a result, the schedule determination means 4B fetches the operating state and the driving schedule of the related equipment from the storage device 5, determines the priority of the equipment to be replaced, and performs the alternative control, so that the recovery control means 4C requests the control via the master station 3 ..

FIG. 2 shows the structure of various data tables stored in the storage device 5. FIG. 2A shows the rating of SR belonging to each substation and the breaker No. for using the SR. Is defined, the subfigure (b) defines substations facing each substation (meaning adjacent substations connected by the feeder system), and subfigure (c) is provided for each SR. The table defines the priority of each SR and the schedule (on / off) time (which changes daily).

Next, the operation of the electric power system accident recovery device for electric railway constructed as described above will be described with reference to the drawings. FIG. 4 shows a typical example of an electric power system for electric railways, showing a rectifier-related system of substations A and B. AC bus 40A
, 40B are connected to the rectifiers 41S to 45S via the rectifier CBs 41, 42, 43, 44, 45, respectively, and the DC bus 50A,
Feeder 60 via 50B and breaker 51 to 55
Powering ~ 63. Here, the finished electric wire is a distribution line for supplying electric power to the electric vehicle. In such a system, for example, rectifiers 41S, 42S, 43S, 44S are operating (45S
If the rectifier 42S of the substation A stops due to a failure during substation A), the rectifier of the substation A does not have a backup, so the substation B, which is an adjacent substation, is checked, and the rectifier 45S is a backup and is not operating. , It is necessary to operate the rectifier to replace it.

The following is a description based on the above example. The state recognition means 4A in FIG. 1 constantly monitors the system state via the remote monitoring and control device 3. The operation of the schedule determination means 4B when the failure of the rectifier 42S described above is detected in the monitoring by the state recognition means 4A will be described with reference to FIG. The processing is started by detecting the trip of the rectifier CB 42 due to the failure of the rectifier 42S. And the rectifier 42 which stopped
S is identified and the rating of the rectifier is searched by the SR constant table of FIG. 2 (a) (step S31). Next, another rectifier in the same substation is searched from the same table (step S
32). Based on the above result, it is possible to determine whether there is a spare (normally stopped) rectifier in the substation or not from the SR schedule table in FIG. S32A). And if it is a spare device and the rating of the rectifier is not a problem (if the capacity is sufficient)
(Step S33), the rectifier CB is controlled (as an alternative) (step S36).

In the above embodiment, since there is no backup device in the substation A, the process proceeds to step S34, and the counter S in FIG.
The opposite SS is searched using the S table (in this embodiment, the substation B becomes the opposite SS). Next, for the substation B searched above, the SR constant table of FIG.
2 (c) Using the SR schedule table, it is checked whether or not there is a backup device and its rating can cover the faulty rectifier (step S35). If replacement is possible, the process moves to step S36 and alternative control is performed. .. If there are a plurality of spare devices, alternative checks are performed from the one with the highest priority according to the priority of the SR schedule table of FIG. In this embodiment, the rectifier 45S of the substation B is used.
CB45 is turned on and off in order to use as a substitute. If substitution is not possible in step S35, the process returns to step S34 again,
Search for an alternate opposing SS or other rectifier and repeat. As described above, even when an abnormality occurs in a device that is indispensable for the operation of the power system, it is possible to surely perform the replacement in accordance with the current schedule.

[0011]

As described above, according to the present invention, when an accident occurs in a substation, the operating condition and the driving schedule are judged and the alternative device is controlled, so that the burden on the operator is increased. It is possible to automatically perform alternative control at the time of an accident without causing it.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a power system accident recovery device for electric railway according to the present invention.

FIG. 2 is an explanatory diagram of data contents of each table of the storage device in the embodiment.

FIG. 3 is a flowchart showing the operation of the embodiment.

FIG. 4 is an explanatory diagram of an electric power system for electric railway.

FIG. 5 is a configuration diagram for explaining a conventional power system monitoring control device.

[Explanation of symbols]

 1A to 1N Remote monitoring control device (slave station) 2A to 2N Transmission line 3 Remote monitoring control device (master station) 4 Computer 4A Status recognition means 4B Schedule determination means 4C Recovery control means 5 Storage device 6 Operator console 7 System monitoring panel

Claims (1)

[Claims] 1. Each circuit breaker of a plurality of electric railway substations,
State recognition means for recognizing the state of the power system by capturing the open / closed state of the disconnector etc. and the state of various protection relays via the remote monitoring and control device, and an accident involving the trip of the circuit breaker occurred in the power system. In this case, there is provided a schedule judging means for judging the operating state and the driving schedule of the related equipment, and a recovery control means for judging the priority of the alternative equipment based on the judgment result of the schedule judging means and performing the alternative control according to the priority. A power system accident recovery device for electric railways.