JP2577393B2 - Automatic recovery system for power system accidents - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention] (Industrial application field) The present invention relates to an automatic recovery system in the event of an accident in a power system, and in particular, a switch automatically based on wide-area system information using an electronic computer. After the completion of the creation of an accident recovery signal (hereinafter referred to as the operation command procedure) for operating the power system, the power system automatically transmits the operation command procedure while actually checking the operation status of the switch corresponding to the signal. Related to the device.

(Prior art) Conventionally, when restoring a system that has failed due to a power system accident, the operator at the power station first checks the operating status of the circuit breaker and protection relay that operated due to the accident, and obtains from the operating status. An accident analysis is performed using the information obtained, and a series of operation command procedures (consisting of procedure numbers, names of electric stations to be operated, names of facilities and equipment to be operated, command terms, remarks, etc.) are displayed. Create in format. Next, the operator instructs the execution of the command in ascending order of the procedure number in the created operation command procedure table, and the procedure is transmitted via the online information input / output device. Is checked, and if the result is good, the operation is performed. When the execution of the operation is completed, "operation end" notification information is returned. Then, this “operation end”
The contact information and the status change information of the switch due to the operation (hereinafter referred to as “responsive change information”) are notified to the operator detected at the transmission source of the procedure via the online information input / output device.

On the other hand, when the above-mentioned responsive change information is detected, the power outage equipment is determined, and the power supply state of the power system is updated and notified to the operator. Thus, the driver selects the procedure of the next procedure number and gives the instruction to execute the command while confirming the charging / discharging state, so the procedure number two or more steps later than the procedure number of the procedure that issued the instruction execution is given. Even if the execution of the command is possible, the command cannot be executed, and it takes much time to execute the command.

(Problems to be Solved by the Invention) That is, since the accident recovery of the conventional power system is performed at the discretion of the operator of the power supply station, a skilled operator is required to create the operation command procedure, Further, the transmission of the operation command procedure is performed by the operator while instructing one step at a time in accordance with the operation command procedure table while confirming the operation state of the switch for the operation command procedure, so that the burden on the operator is very large. . In particular, when multiple accidents occur in a power system that has recently become enormous and complicated, the range of power failure due to the accident becomes wide, and the number of operation command procedures created becomes considerable. Since the operator needs to transmit the operation command procedure while monitoring the operation state of the switch according to the created operation command procedure, it takes a long time (tens of minutes to several hours) to recover from the accident. You will have to maintain tension during that time.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to monitor the operation status of a switch in response to an operation command procedure created to restore a power outage caused by an accident using an electronic computer. Another object of the present invention is to provide an automatic recovery system for power system accidents that can automatically transmit one procedure at a time while recovering the accident at high speed and accurately and reduce the burden on the operator.

[Structure of the Invention] (Means and Actions for Solving the Problems) In order to achieve the above object, according to the present invention, at the time of an accident in a power system, the operation status of switches and protection relays sent from the system is reported. Operation procedure creation means for taking in through the input / output means and creating an operation command procedure for restoring the power failure system based on the information, and an operation command procedure for storing the operation command procedure created by the operation procedure creation means Storage means; transmission order determination processing means for fetching the operation instruction procedure stored in the operation instruction procedure storage means and determining the transmission order of the operation instruction procedure by focusing on the first operation instruction; and transmission order determination processing means An operation command procedure transmitting means for transmitting an operation command procedure to the power system side via the information input / output means in the transmission order determined by the operation command procedure; An operation command for monitoring the operation status of the switch for the set operation command procedure and, when the completion of the operation of the operation command procedure is confirmed, sending a signal to the transmission order determination processing means to determine a procedure to be transmitted next. Procedure execution monitoring means, wherein the transmission order determination processing means also receives data from the operation command procedure storage means when a signal to determine the next procedure to be transmitted is given from the operation command procedure execution monitoring means. Then, the next transmittable command means is searched, and all transmittable operation command procedures are sent to the operation command procedure transmitting means to transmit the operation command.

Therefore, in the automatic recovery system for an accident of the power system having such a configuration, when transmitting the accident recovery operation command means created at the time of the occurrence of the power system accident, the operation command procedure which can be transmitted unconditionally first. When the operation completion information and the response change information for the transmitted procedure are detected, all operation command procedures that can be transmitted immediately after the completion of the operation of the procedure are searched, The operation target switch for the retrieved procedure sequentially transmits the retrieved operation command procedures while confirming that at least one end thereof is in a charged state on the restoration operation target system, and performs operation completion information and When the response change information is confirmed, the same process is repeated again to execute the operation command procedure, so that the time required for accident recovery can be shortened.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an example of a system configuration of an automatic recovery system at the time of a power system accident according to the present invention. In the figure, 1 is a power system as a control object, 2 is an online information input / output device, and 3 is an electronic computer. Also, in the electronic computer 3, reference numeral 4 denotes an operation command procedure creation unit for restoring a power failure caused by a power system accident; 5, an operation command procedure storage unit for storing the created operation command procedure; and 6, an operation command procedure execution unit. A monitoring unit, 7 is an operation command procedure transmission order determination processing unit, and 8 is an operation command procedure transmission unit.

In this configuration, if an accident occurs in the power system 1, the operating status of the circuit breaker or the protection relay operated by the accident is taken into the computer 3 via the online information input / output device 2, and In order to restore the power failure system, the operation command procedure creating unit 4 creates the operation command procedure, and saves the operation command procedure in the operation command procedure saving unit 5. When the storage is completed, first, the operation command procedure transmission order determination processing unit 7 pays attention to the first operation command procedure, and transmits the first operation command procedure via the online information input / output device 2 by the operation command procedure transmission unit 8. In addition, the operation change information corresponding to the transmitted operation command procedure is monitored by the corresponding operation change information operation command procedure execution monitoring unit 6, and when the completion of the operation of the operation command procedure is confirmed, the next procedure to be transmitted is performed. Is given to the operation command procedure transmission order determination processing section 7 to determine the order. Thus, the operation command procedure transmission order determination processing unit 7 searches for the next transmittable command procedure based on the data in the operation command procedure storage unit, and transmits all the transmittable operation command procedures to the operation command procedure transmission unit 8. It sends out and transmits the operation command procedure. The above operation is stored in the operation command procedure storage unit 5
Are performed until it is confirmed that the operation for the operation command procedure is completed.

Next, a method of transmitting the operation command procedure will be described with reference to a flowchart shown in FIG.

First, in step S1, an operation command procedure created for restoring a power failure system due to an accident is a procedure that can be transmitted unconditionally itself (that is, a procedure that can execute a command without waiting for the completion of an operation of a certain procedure). This is referred to as a procedure without a parent procedure).

In step S2, it is determined whether or not all procedures extracted as procedures without the parent procedure have been transmitted.If transmitted, the process branches to step S5. Focus on one procedure that has no procedure and has not been transmitted.

In step S4, the procedure of interest is transmitted, the fact that transmission has been completed is stored, and the process returns to step S2 again to determine whether or not the procedure without all parent procedures has been transmitted.

Next, in step S5, in the operation command procedure created for restoring the power failure system due to the accident, whether or not all procedures have been processed is stored in another step (S10) to be described later. Is determined, the process is terminated if all the procedures have been processed, and if not, the process proceeds to step S6.

In step S6, it is determined whether or not the processes in steps S7 to S10 have been executed for all the created procedures. If the processes have been executed for all the procedures, the process branches to step S11. That is, every time control is transferred to step S6, steps S7 to S10 are always executed for all the created procedures.

In step S7, attention is paid to the created procedures in ascending order.

In step S8, it is determined whether or not the processed state is stored for the start procedure, and whether the operation of the operation instruction procedure is completed. As a result, if the condition is satisfied, the process proceeds to step S9 in order to search for a procedure that can execute jumping. If the condition is not satisfied, the process returns to step S6 and focuses on the next procedure. In this case, whether or not the operation of the operation command procedure has been completed is determined by using the operation completion information and the response status change information for the transmitted operation command procedure, and using the operation command procedure execution monitoring unit 6 in FIG. , And the fact that the operation is completed is stored for each operation command procedure.

In step S9, all the procedures that become executable due to the completion of the operation of the extracted procedure are extracted by searching the stored operation command procedure. The steps that can be taken are:
It is assumed that a procedure that can be executed upon completion of the procedure step is stored for each operation command procedure step because the procedure can be recognized in the process of creating the operation command procedure.

In step S10, the fact that the procedure has been processed is stored, and the determination is made in steps S5 and S8.

When the above steps are performed for all the procedures in S7 to S10, the process branches to step S11.

In step S11, it is determined whether or not transmission to all of the jump executable procedures extracted in steps S6 to S10 has been completed, and if not completed, attention is paid to one of the untransmitted procedures in step S12, Step S5 again if completed
Then, it is determined whether or not there is a procedure whose operation has been completed.

In step S13, in response to the operation command procedure that has become possible to execute the jump, the operation target switch for the procedure is transmitted while confirming that at least one end of the operation target switch is in a charged state on the restoration operation target system, and the transmission has been completed. To the effect.

The above steps are performed for all of the procedures that can be skipped and executed for S11 to S13.

Next, the above-mentioned automatic recovery system at the time of an accident of the present invention will be specifically described.

First, Fig. 3 schematically shows the process of sequentially opening and closing switches when an accident occurs in the power system. Occurred, and the circuit breakers of T1 and T2 respectively tripped. In FIG. 3, A, A1 ... A22, B, B
1, B11 indicates the substations where the power outage occurred due to the accident, and K1, K2,… K
Reference numeral 5 denotes a switch that is operated from open to closed by an operation command procedure.

The following table shows the operation command procedure created for the accident case shown in FIG. For example, as shown in the table, the operation command procedure stores the content of the operation command, the procedure number that can be executed upon completion of the operation for the procedure, and the presence / absence of a parent procedure for each procedure unit, and further transmits the transmission to the procedure. If an area for storing the completion of the operation, an area for storing the completion of the operation, and an area for storing the completion of the processing are provided, the transmission of the operation command procedure is performed in accordance with the flow chart showing the principle of the present invention shown in FIG. To complete the restoration of the power failure system after the fact.

Hereinafter, the accident case of FIG. 3 will be described in correspondence with the flowchart of FIG.

First, in step S1, two procedures of procedure number 1 (K1-ON) and procedure number 2 (K2-ON) are extracted by the operation command procedure transmission order determination processing unit 7 in FIG. I do. Since these extracted procedures have not been transmitted, they are transmitted by the operation command procedure transmitting section 8 in FIG. 1 in step S4, and the fact that they have been transmitted is stored for each of them.

As described above, since all procedures without a parent procedure are stored as having been transmitted, attention is paid to the procedure of procedure number 1 in which the processed is not stored again in step S7. Since the procedure has already been transmitted, whether or not the operation has been completed is monitored by the operation command procedure execution monitoring unit 6 in FIG. 1 based on the operation completion information and the response change. Then, if it is confirmed that the operation for the procedure number 1 has been completed,
Referring to the restoration command procedure data shown in the table, the operation command procedure transmission order determining unit 7 shown in FIG. 1 determines in step S9 that the procedure of procedure number 3 (K3-ON ) And procedure number 4 (K4-ON) are extracted.

Next, the operation command switch shown in FIG. 1 confirms that the switch to be operated for the procedure of the procedure number 3 and the procedure number 4 which can be skipped in step S13 is currently charged at least at one end on the system. After being confirmed by the procedure execution monitoring unit 6, it is transmitted by the operation command procedure transmitting unit 8, and the fact that the transmission has been completed is stored. In this case, the fact that the procedure of procedure number 1 has been transmitted, the operation has been completed and the processing has been completed is stored at this time, and only the fact that the procedure of procedure numbers 2, 3, and 4 has been transmitted is stored.

Next, the process returns to step S5 again, and focuses on the operation command sequence table in ascending order of the sequence numbers. Since the procedure of procedure number 1 has been processed, it is not processed (step S
8), the procedure of procedure number 2 in step S7 (K2-ON)
Pay attention to. Now, assuming that the completion of the operation for the procedure number 2 is confirmed, in step S9, the restoration command procedure data is referred to, and as the procedure that can be transmitted with the completion of the operation of the procedure number 2, the procedure number 5 (K5− ON)
In step S10, it is assumed that the procedure of procedure number 2 has been processed. Furthermore, if it is confirmed that the operation for the already transmitted procedure numbers 3 and 4 has been completed, it will be possible to transmit with the completion of the operation of procedure numbers 3 and 4 with reference to the restoration command procedure data in the above table. In this example, since there is no such procedure, only the fact that each procedure has been processed is stored in step S10, and step S11 is performed.
Move to. Then, in step S13, procedure number 5
Is transmitted and the fact that the transmission has been completed is stored. At this point, the procedure numbers 1 to 4 have been transmitted, and the fact that the operation has been completed and processed has been stored. The procedure number 5 has been transmitted,
The operation has been completed.

Next, the process returns to step S5 again, and focuses on the operation command procedure from the youngest one. Since the procedure numbers 1 to 4 have been processed, they are not processed in step S8, and the completion of the operation of procedure number 5 is confirmed. Now, if the completion of the operation of the procedure number 5 is confirmed, it is attempted to search for a procedure that can be executed by the completion of the operation of the procedure number 5 by referring to the restoration command procedure data in the above table. Since it does not exist, only the fact that processing has been completed is stored in step S10.

As described above, since all the procedure numbers 1 to 5 have been processed, the process ends in step S5.

As described above, the power system automatic recovery system according to the present invention, when executing a series of operation command procedures created to restore the system that has been powered down due to the accident,
First, all the operation command procedures that can be transmitted unconditionally are transmitted, and then, when the operation end information and the response state change information for the transmitted procedure are detected, transmission is possible immediately upon completion of the operation of the procedure. Search all the operation command procedures that have been performed, and sequentially transmit the searched operation command procedures while confirming that the switch to be operated for the searched procedure is at least one end charged in the recovery operation target system. When the operation completion for any of the procedures is confirmed, the same processing is repeated again to skip and execute the operation instruction procedure.

Therefore, when executing a series of created operation command procedures, such as the recovery from a conventional power system accident, after the operator confirms the end of the previous procedure in ascending order of the procedure numbers in the operation command procedure table, Otherwise, the accident recovery operation can be performed much faster and more accurately than when the next step command could not be executed, and the burden on the operator is expected to be drastically reduced. Things.

In the above embodiment, the accident recovery method using the restoration command procedure composed of 13 procedure steps S1 to S13 for restoring the power failure system in the case of a double accident has been described, but this method is not limited to any other form. The same can be applied to the case of accident restoration using the restoration order procedure for accidents.

[Effects of the Invention] As described above, according to the present invention, an electronic computer is used to automatically monitor the operation status of a switch for an operation command procedure created for restoring a power outage caused by an accident while automatically monitoring the status. It is possible to provide a highly reliable automatic recovery system for an electric power system which can transmit the procedure one by one and reduce the burden on the operator who has performed the accident recovery at high speed and accurately.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing one embodiment of the present invention, and FIG.
The figure is a flowchart for explaining the method of the present invention,
FIG. 3 is an accident case model diagram for explaining one embodiment of the present invention. 1 ... power system, 2 ... online information input / output device, 3
... Electronic computer, 4 ... Operation command procedure creation unit, 5 ... Operation command procedure storage unit, 6 ... Operation command procedure execution monitoring unit, 7
... Operation command procedure transmission order determination processing section, 8... Operation command procedure transmission section.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeru Iizuka 1-3-1 Uchisaiwaicho, Chiyoda-ku, Tokyo Inside Tokyo Electric Power Company (72) Inventor Takeshi Nagata 1st Toshiba-cho, Fuchu-shi, Tokyo Inside the factory (72) Inventor Yukio Nakai 1-1-2, Wadazakicho, Hyogo-ku, Kobe-shi, Hyogo Mitsubishi Electric Corporation Control Factory (72) Inventor Hitoshi Inoue 5-2-1, Omikamachi, Hitachi City, Ibaraki Pref. (56) References JP-A-56-145732 (JP, A)

Claims (1)

(57) [Claims] An operation command procedure for restoring a power failure system based on information obtained by taking in the operation status of switches and protection relays sent from the power system in the event of a power system accident through information input / output means. An operation procedure creating means to be created, an operation instruction procedure storing means for storing the operation instruction procedure created by the operation procedure creating means, and an operation instruction procedure stored in the operation instruction procedure saving means, the first operation instruction Transmission order determination processing means for determining the transmission order of the operation instruction procedure by focusing on the operation instruction procedure in the transmission order determined by the transmission order determination processing means to the power system side via the information input / output means. Means for transmitting the operation command procedure to be transmitted, and monitoring the operation status of the switch for the operation command procedure transmitted by the operation command procedure transmission means, and completing the operation of the operation command procedure And an operation command procedure execution monitoring means for giving a signal to the transmission order determination processing means to determine a procedure to be transmitted next, wherein the transmission order determination processing means comprises the operation command procedure execution monitoring means When a signal indicating that a procedure to be transmitted next is determined is given, a command procedure that can be transmitted next is searched based on the data of the operation command procedure storage unit, and all of the operation command procedures that can be transmitted are subjected to the operation. An automatic recovery system at the time of a power system accident, wherein an operation command is transmitted by transmitting it to a command procedure transmitting means.