JP2656701B2 - Power system accident propagation simulator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power system accident propagation simulator which simulates the extent of an accident when an accident occurs in equipment in a power system.

[0002]

2. Description of the Related Art FIG. 6 is a block diagram showing a conventional power system fault propagation simulator. In the figure, reference numeral 1 denotes a plurality of switches in the power system, and 2 denotes switching information of each switch 1 in the power system. The input unit 3 is a storage unit in which accident facilities in the power system are registered and an accident propagation pattern indicating a switch to which the accident propagates is registered for each accident facility.

When the switching operation information taken in by the input unit 2 indicates a closing operation of any one of the switches 1, the connection state of the power system is inspected, and an accident registered in the storage unit 3 is performed. The determining unit 5 for determining whether or not there is an accident facility that is in a charged state in the equipment is read from the storage unit 3 by the accident propagation pattern of the accident facility determined to be in the charged state by the determination unit 4, and the accident propagation is performed. A simulation execution unit that simulates the spread of an accident based on a pattern, and 6 is a CRT (display device) that displays a simulation result of the simulation execution unit.

Next, the operation will be described. FIG. 7 is a flowchart for explaining the operation of the power system accident propagation simulator of FIG. 6, and will be described with reference to FIG. First, the input unit 2 acquires switching operation information (see FIG. 8) from each switch 1 in the power system (step ST1).

[0005] Next, the determination unit 4 determines whether or not there is a switch 1 that has been closed (closed) based on the open / close operation information (step ST2). If there is the switch 1 that has been closed, the connection state of the power system is checked (step ST5), and the state of charge is stored in the accident facilities registered in the storage unit 3 (see FIG. 9). It is determined whether or not there is any accident equipment that will result in (Step ST6).

Next, when the judging section 4 judges that there is an accident facility that becomes charged, the simulation execution section 5 stores an accident propagation pattern corresponding to the accident facility that is judged to be charged. (Step ST7). Then, the switch is operated based on the accident propagation pattern (see FIG. 10) to simulate the accident propagation (step ST).
8, 9). Note that the simulation result is displayed on the CRT 6, but the cut-off state of each switch occurs simultaneously (when the opening operation of each switch is
(Displayed simultaneously on the screen of T6).

[0007]

Since the conventional power system fault propagation simulator is configured as described above, it does not take into account the type of fault such as short circuit, ground fault, etc., or the switch which charged the fault facility, etc. Since the accident propagation pattern is determined only by the charged accident facilities, there has been a problem that accurate simulation of the accident propagation cannot be performed. In addition, when the simulation result is displayed on the CRT, the switching state of the switch is generated at the same time, so that there is a problem in that the switch is separated from the actual accident propagation state.

The present invention has been made in order to solve the above-mentioned problems, and enables accurate simulation of accident spread by considering the type of accident and the switch that has charged the accident equipment. It is another object of the present invention to obtain a power system fault propagation simulator capable of generating a switching state of a switch at a time interval close to an actual fault propagation state.

[0009]

An electric power system accident propagation simulator according to the present invention comprises:
For each combination of the switch and the switch that has been closed, a switch to which the accident spreads and an accident spreading pattern indicating the time required for the accident to spread to the switch are registered in the storage unit, and the determination unit The accident propagation pattern is selected from the storage unit on the condition that the accident equipment is determined to be in the charged state, the accident type of the accident equipment, and the switch that has been closed.

[0010]

The power system fault propagation simulator according to the present invention uses the fault condition determined by the determining unit to be in a charged state, the fault type of the fault device, and the switch on which the closing operation was performed. By selecting a propagation pattern and providing a simulation execution unit that simulates the propagation of an accident based on the accident propagation pattern, a simulation close to an actual accident propagation state is performed.

[0011]

【Example】

Embodiment 1 FIG. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a power system accident propagation simulator according to one embodiment of the present invention.
Since the same reference numerals as those in the related art indicate the same or corresponding parts, the description is omitted. Reference numeral 11 denotes an accident facility in the power system and an accident type of the accident facility, and a switch to which the accident spreads and the switching of the switch for each combination of the accident facility, the accident type, and the switch that has been closed. This is a storage unit in which an accident propagation pattern indicating a time required for the accident to propagate to the vessel is registered.

When the switching operation information taken in by the input unit 2 indicates the closing operation of one of the switches 1, the connection unit 12 checks the connection state of the power system and is registered in the storage unit 11. The determining unit 13 determines whether there is an accident facility that becomes charged among the accident facilities that are in charge, and if there is an accident facility that becomes charged, the determining unit 13 that determines the accident type of the accident facility is performed by the determination unit 12. An accident spreading pattern is selected from the storage unit 11 based on the accident equipment determined to be in a charged state, the accident type of the accident equipment, and the switch on which the closing operation was performed, and based on the accident spreading pattern, Is a simulation execution unit that simulates the propagation of

Next, the operation will be described. FIG. 2 is a flowchart for explaining the operation of the electric power system accident propagation simulator of FIG. 1, and will be described with reference to FIG. In FIG. 2, steps ST1 to ST6 are the same as those in FIG.
In step 1, the input unit 2 captures the switching operation information of the switch 1, and in step ST2, the determination unit 12 determines whether there is a switch that has been closed. Then, in step ST5, the determination unit 12 inspects the connection state of the power system, and in step ST6, the determination unit 12 determines whether there is any accident facility that will be charged.

Next, when there is an accident facility that becomes charged, the judgment unit 12 judges whether the accident type of the accident facility is a short-circuit accident or a ground fault accident (step ST).
11). That is, since the accident equipment and the accident type of the accident equipment registered in the storage unit 11 are registered as an accident equipment table as shown in FIG. It is possible to determine whether the accident type is a short-circuit accident or a ground-fault accident by referring to the type of accident (indicating either a short-circuit or a ground fault).

Next, the simulation execution unit 13 refers to the accident equipment charge registration table (FIG. 4) corresponding to the accident equipment determined to be charged by the determination unit 12 (corresponding to each accident equipment in FIG. 3). An accident equipment charge registration table is provided, and the accident equipment charge registration table contains accident propagation patterns corresponding to the accident charge registration switches.) 1
Of the three or more accident charging registration switches, the one that matches the switch 1 that has been closed this time is detected (step ST1).
2). Then, an accident propagation pattern corresponding to the accident charge registration switch whose coincidence is detected in step ST12 is read (step ST13). That is, the simulation execution unit 1
No. 3 selects an accident propagation pattern on the condition of the accident equipment, the accident type, and the closed switch.

As shown in FIG. 5, the accident propagation pattern includes a switch to be operated and an execution timer of the switch (the time required for the accident to propagate to the switch, ie, the start of simulation). And then open the switch with CRT6
Is displayed until it is displayed on the screen.

Next, the simulation execution unit 13 performs an opening operation on the screen of the CRT 6 in accordance with the execution timer of the switch sequentially from the switch registered at the head of the accident propagation pattern (step ST14). For example, if the execution timer of the switch registered at the top is “5 seconds”, the opening operation of the switch is displayed on the screen of the CRT 6 five seconds after the start of the simulation.

Embodiment 2 FIG. In the above embodiment, the simulation of the accident propagation was described by changing the state of the switch. However, the operation of the protection relay and the change of the state of the switch may be performed, and the same effects as in the above embodiment can be obtained.

[0019]

As described above, according to the present invention, for each combination of the accident equipment, the accident type, and the switch on which the closing operation has been performed, the switch to which the accident spreads and the switch for the switch are described. The accident propagation pattern indicating the time required until the accident propagates is registered in the storage unit, and the accident equipment determined to be charged by the determination unit, the accident type of the accident equipment, and the opening / closing operation performed when the closing operation was performed. It is configured to select the accident propagation pattern from the storage unit on condition of the container, so that it is possible to simulate the precise accident propagation, and
There is an effect that the switching state of the switch can be generated at a time interval close to the actual state of the accident propagation.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a power system fault propagation simulator according to one embodiment of the present invention.

FIG. 2 is a flowchart illustrating the operation of the power system accident propagation simulator of FIG. 1;

FIG. 3 is a configuration diagram showing an accident equipment table.

FIG. 4 is a configuration diagram showing an accident equipment charge registration table.

FIG. 5 is a configuration diagram showing an accident propagation pattern.

FIG. 6 is a block diagram showing a conventional power system accident propagation simulator.

FIG. 7 is a flowchart illustrating the operation of the power system accident propagation simulator of FIG. 6;

FIG. 8 is a configuration diagram showing an operation switch table.

FIG. 9 is a configuration diagram showing an accident equipment table.

FIG. 10 is a configuration diagram showing an accident propagation pattern.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Switch 2 Input part 11 Storage part 12 Judgment part 13 Simulation execution part

Claims (1)

(57) [Claims] 1. An input unit for acquiring switching operation information of each switch in a power system, an accident facility in the power system and an accident type of the accident facility are registered, and the accident facility, the accident type, and the closing operation are registered. For each combination of switches performed, a switch to which the accident spreads and a storage unit in which an accident spread pattern indicating the time required for the accident to spread to the switch is registered, and the storage unit is registered by the input unit. When the switching operation information indicates the closing operation of one of the switches, the connection state of the power system is inspected, and among the accident facilities registered in the storage unit, there is an accident facility that becomes charged. When determining whether or not there is an accident facility that becomes charged, a determining unit that determines the accident type of the accident facility, and the accident facility that is determined to be charged by the determination unit, A simulation execution unit that selects an accident propagation pattern from the storage unit on the condition of the accident type of the accident equipment and the switch that has been closed, and simulates an accident propagation based on the accident propagation pattern. Power system accident propagation simulator.