JP2012034437A - Method for determining trouble recovery target system in electric power system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To determine a recovery target system that enables rapid recovery from a failure.SOLUTION: A computer accepts the designation of a failed power facility in which a failure has occurred, and generates a plurality of candidates for recovery target systems which satisfy prescribed operational restrictions and which bring the failed facility into a power shutoff state. One of the recovery target system candidates is selected as the recovery target system according to a hamming distance between a first character string in which characters representing the states of power facilities which constitute a normal system or a failed system are arranged and a second character string in which characters representing the states of the respective power facilities which constitute the recovery target system candidates are arranged.

Description

  The present invention relates to an accident recovery target system determination method in an electric power system.

  Electric power companies, etc. are required to promote the streamlining of electric power facilities and provide the maximum service with the minimum electric power facilities. On the other hand, in order to provide a stable supply of power, it is necessary to perform work to stop the functions of the power equipment, such as new expansion of power equipment and inspection (hereinafter referred to as “power outage work”). It is necessary to make a work plan (hereinafter referred to as “power outage work plan”) so as to suppress the influence of the power outage work on consumers as much as possible. When preparing a power outage work plan, it is necessary to consider recovery in the event of an accident involving power supply during power outage work. For example, Patent Document 1 and Patent Document 2 describe that a recovery target system for an assumed accident is drafted and an evaluation is performed as to whether or not the reliability for the assumed accident is secured.

JP 2003-32892 A JP 2008-187870 A

  There are many systems that can eliminate supply problems, but a system that can be restored as quickly as possible should be determined. However, neither Patent Document 1 nor Patent Document 2 describes a specific configuration for planning a recovery target system.

  The present invention has been made in view of such a background, and an object thereof is to be able to determine a recovery target system that can be quickly recovered from an accident.

  A main invention of the present invention for solving the above problems is a system that supports recovery from an accident in an electric power system constituted by a plurality of electric power facilities, and designates the accident equipment that is the power equipment in which the accident has occurred. A recovery target system candidate that satisfies a predetermined operational constraint and is in a power outage state among combinations of states of the accident facility designation unit that receives the power facility and the power facility that constitutes the power system. A plurality of restoration target system candidate creation units to create and a first character string in which characters representing the states of the respective power facilities constituting a given system are arranged, and the restoration target system candidate for each of the restoration target system candidates A second character string in which characters representing the states of the respective power facilities constituting the target system candidate are arranged is created, and a Hamming distance between the first and second character strings is calculated. A timing distance calculation unit, in accordance with the Hamming distance, and be provided with a recovery target system determining unit for determining one of the restoration target line candidate restoration target system.

  In the power system restoration support system of the present invention, the predetermined system may be a system at all times.

  In the power system restoration support system of the present invention, the predetermined system may be a system in which the accident facility is in a power outage state in a constant system.

  In the power system accident countermeasure support system of the present invention, the recovery target system determination unit may determine the recovery target system candidate having the shortest Hamming distance as the recovery target system.

  The power system accident countermeasure support system according to the present invention further includes a reliability information storage unit that stores reliability information for calculating supply reliability of the power system in association with information specifying the power facility. The recovery target system determination unit calculates the supply reliability for each of the recovery target system candidates based on the state of the power equipment constituting the recovery target system candidate and the corresponding reliability information, The restoration target system may be determined according to the Hamming distance and the supply reliability.

  Further, in the power system accident countermeasure support system of the present invention, the recovery target system determination unit determines that the recovery target system candidate with the shortest Hamming distance is only when there are a plurality of recovery target system candidates with the shortest Hamming distance. For each, the supply reliability may be calculated, and the highest supply reliability calculated may be determined as the recovery target system.

  According to another aspect of the present invention, there is provided a method for supporting countermeasures against an accident in an electric power system constituted by a plurality of electric power facilities, wherein a computer having a CPU and a memory is the electric power facility where an accident has occurred. A designation of a certain accident facility is received, and among the combinations of the states of the power facilities constituting the power system, a recovery target system candidate that satisfies a predetermined operation constraint and that causes the accident facility to be in a power failure state is selected. Create a plurality of first character strings in which characters representing the state of each power facility constituting a given system are arranged, and configure the recovery target system candidate for each of the recovery target system candidates Create a second character string in which characters representing the state of each power facility are arranged, calculate a Hamming distance between the first and second character strings, and according to the Hamming distance, And to determine the one of the old goal line candidate as the recovery target system.

  According to another aspect of the present invention, there is provided a program for supporting countermeasures against an accident in an electric power system including a plurality of electric power facilities, wherein the electric power in which an accident has occurred in a computer having a CPU and a memory. A step of receiving designation of an accident facility that is a facility and a combination of the states of the power facilities that constitute the power system satisfy a predetermined operation constraint and the accident facility is in a power outage state. A step of creating a plurality of target system candidates and a first character string in which characters representing the states of the respective power facilities constituting a given system are arranged, and the recovery target is set for each of the recovery target system candidates. A second character string in which characters representing the state of each power facility constituting the system candidate are arranged is created, and a Hamming distance between the first and second character strings is calculated. A step of, in response to the Hamming distance, and be executed and determining one of the restoration target line candidate restoration target system.

  Other problems and solutions to be disclosed by the present application will be made clear by the embodiments of the invention and the drawings.

  According to the present invention, it is possible to determine a recovery target system that can be quickly recovered from an accident.

It is a figure showing information processor 200 which realizes restoration work support system concerning one embodiment of the present invention. FIG. 3 is a diagram illustrating a software configuration of a recovery work support system. It is a figure which shows an example of a continuous system. It is a figure which shows an example of a reference | standard system | strain. It is a figure explaining the flow of the process which determines a recovery target system | strain. It is a figure which shows an example of the candidate of a recovery target system | strain. It is a figure which shows an example of the candidate of a recovery target system | strain. It is a figure which shows the flow of an output process of an operation slip. It is a figure which shows the example of the state of each electric power installation in each of a reference | standard grid | system and a recovery target system | strain. It is a figure explaining the transition from an accident system to a restoration target system.

  Hereinafter, a recovery work support system according to an embodiment of the present invention will be described in detail with reference to the drawings.

== System overview ==
The restoration work support system of the present embodiment is a system that eliminates a power outage (hereinafter referred to as “recovery”) from a system in which an accident has occurred (hereinafter referred to as “accident system”) when an accident occurs in a power facility in the regular system. It is called "target system"). The normal system is a state of the power system in a normal operation state. Accident system refers to other power facilities that make up a power outage in the power system that constitutes an accident system (hereinafter referred to as “accident equipment”) and that causes a power outage in conjunction with the power outage of the accident equipment. The power system is also a power system in a power outage state. In the restoration work support system of this embodiment, as will be described later, a restoration target system that can quickly carry out restoration work from a power failure is determined, and when there are a plurality of candidates, the supply reliability is high. To choose. Here, the supply reliability is an index indicating the stability of the power. For example, when the function of the power facility is stopped due to a power failure operation, the redundancy of the power system is lowered, and thereby the supply reliability is lowered. become. As indicators of supply reliability, there are the number of power outages and power outage hours on the customer side. In addition, the supply reliability index on the supplier side includes a supply reserve ratio and a power shortage probability in the power supply department, adequacy and security in the power transmission and distribution department. Adequacy is a measure of the power system's ability to supply power without causing any abnormality in the power system, taking into account operational constraints of the power equipment that constitutes the power system. is there. These indexes are evaluated for each power facility or as a value (total or average) of the entire power system.

  In the power failure work planning system according to the present embodiment, in order to quantify the supply reliability, N-2 supply trouble power, N-2 overload power, N-2 margin power amount, etc. are used as indicators of supply reliability. Is used. Here, the case where one of the components of the power system stops functioning due to an accident or the like is N-1, and the case where two of the power facilities stop functioning is N-2. In general, the concept of equipment configuration assuming N-1 is called the N-1 standard. The N-2 standard assumes a more severe accident. The N-2 standard is a standard adopted when a higher level of reliability is required than N-1. General power equipment is created in accordance with the N-1 standard. In this embodiment, the N-2 standard is used in principle. However, as will be described later, the priority order of work system candidates to be adopted cannot always be completely ordered only by the N-2 standard. Therefore, in such a case, higher standards such as N-3 standard, N-4 standard,.

  The N-2 supply hindering power described above in the N-2 standard is a power hindering power supply when two power facilities out of the power facilities constituting the power system have stopped functioning due to an accident or the like. Supply hindering power includes power that is completely interrupted to the load and power that is not completely interrupted but is less than the power required for the load. included. In the present embodiment, as the N-2 supply hindrance power, the sum of the supply hindrance power of each load for all power system variations in which the functions of the two power facilities are stopped, or the total is the number of variations. The average value divided is used. The less reliable supply power, the higher the supply reliability.

  Among the N-2 standards, the N-2 overload amount described above does not stop the function when two power facilities of the power facilities constituting the power system are stopped due to an accident or the like. This is the amount of overload power flowing beyond the rated capacity to other power facilities. In the present embodiment, similar to the N-2 supply hindering power, the sum of the N-2 overload amounts of each power facility for all variations of the power system in which the functions of the two power facilities are stopped, or the above An average value obtained by dividing the sum by the number of variations is adopted. The smaller the overload amount, the higher the supply reliability.

  Among the N-2 standards, the above-mentioned N-2 marginal power amount does not stop the function when two of the power facilities constituting the power system have stopped functioning due to an accident or the like. It is the difference between the rated capacity of power in another power facility and the amount of power transmitted in that power facility. The greater the N-2 margin power amount, the higher the supply reliability.

  The supply reliability is not limited to that described above, and other indexes indicating the stability of power can be appropriately adopted.

== Information processing device ==
FIG. 1 shows an information processing apparatus 200 that implements a recovery work support system according to this embodiment. The CPU 201 is responsible for overall control of the information processing apparatus 200. By executing the program 202c stored in the memory 202 as the storage means or the storage device 208, the function of the recovery work support system, the function of the database, and the like are realized. To do. The recording medium reading device 204 is a device for reading a program and data recorded on the recording medium 207. The read program and data are stored in the memory 202 and the storage device 208. Therefore, for example, the program 202c for realizing the function of the recovery work support system recorded in the recording medium 207 is read from the recording medium 207 using the recording medium reading device 204 and stored in the memory 202 or the storage device 208. Can be. For example, data stored in the above-described database is stored in the memory 202 or the storage device 208. As the recording medium 207, a flexible disk, CD-ROM, DVD-ROM / RAM, DVD-RAM / RAM, semiconductor memory, or the like can be used.

  The recording medium reading device 204 can be built in the information processing device 200 or can be externally attached. The storage device 208 is, for example, a hard disk device, a flexible disk device, a semiconductor storage device, or the like. The input device 205 is used for data input to the information processing apparatus 200 by an operator or the like. For example, a keyboard or a mouse is used as the input device 205. The output device 206 is a device for outputting information to the outside. For example, a display or a printer is used as the output device 206. The communication interface 203 is an interface for connecting the information processing apparatus 200 to an external network such as a LAN. The information processing apparatus 200 can communicate with an external apparatus such as another computer via the communication interface 203.

  FIG. 2 is a diagram illustrating a software configuration of the recovery work support system according to the present embodiment. The restoration work support system includes an accident facility designation unit 211, a restoration target system candidate creation unit 212, a restoration target system determination unit 213, a switching work plan creation unit 214, and a constant system storage unit 231. The accident facility designation unit 211, the recovery target system candidate creation unit 212, and the recovery target system determination unit 213 are realized, for example, when the CPU 201 included in the information processing apparatus 200 executes the program 202c stored in the memory 202. . In addition, the constant system storage unit 231 is realized as a storage area provided by the memory 202 included in the information processing apparatus 200, for example.

  The constant system storage unit 231 stores information (hereinafter referred to as “system information”) indicating the state of the power equipment in the constant system. FIG. 3 is a diagram illustrating an example of a continuous system. In the example of FIG. 3, the always-on system includes branches b1 to b9 that are power facilities, four branches b2, b3, b5, and b6 are in an on state, and the other branches are in an off state. For example, as shown in the lower part of FIG. 3, the system information includes the state of each power facility (in the example of FIG. 3, “1” indicates an on state and “0” indicates an off state). In addition, the continuous power storage unit 231 includes information (e.g., power consumption, rated power, transmission capacity, power loss, and the like related to each power facility constituting the power system (for calculating the above supply reliability). (Hereinafter referred to as “reliability information”) and various types of data used for the recovery target system determination process described later.

  The accident facility designation unit 211 receives designation of an accident facility that assumes that an accident has occurred or that an accident has occurred. An example of the accident system is shown in FIG. In the example of FIG. 4, the branch b5 is an accident facility, and the load L3 is thereby interrupted.

  The recovery target system candidate creation unit 212 creates systems that are candidates for the recovery target system (hereinafter referred to as “recovery target system candidates”). The restoration target system candidate is a combination of power facilities in which the accident facility is in an off state and power is supplied to all of the loads.

  The recovery target system determination unit 213 determines a recovery target system from the recovery target system candidates. In the recovery work support system of this embodiment, the recovery target system determination unit 213 is a recovery target system candidate that is at the closest distance to the system (hereinafter referred to as “reference system”) in which only the accident facility is turned off in the normal system. Is determined as the recovery target system. The distance between the reference system and the recovery target system candidate is calculated from the Hamming distance. That is, a state in which characters indicating the on / off state of each power facility in the reference system (hereinafter referred to as “state character string”) and characters indicating the on / off state of each power facility in the recovery target system candidate are aligned. The character string is compared, and the Hamming distance, which is the number of different characters, is calculated as the distance between the normal system and the recovery target system candidate.

  The switching work plan creation unit 214 plans a procedure for shifting from the accident system to the recovery target system.

== Recovery target system determination process ==
FIG. 5 is a diagram for explaining the flow of the recovery target system determination process.
The accident facility designation unit 211 receives the input of the accident facility (S311), and the recovery target system determination unit 213 sets the hamming distance n to 0 (S312), and the standard that sets only the accident facility in the off state at all times A system is created (S313). For example, in the example of FIG. 4 described above, when the accident facility is the branch b5, only the branch b5 is turned off. In the examples of FIGS. 3 and 4, the accident system and the reference system are the same because the branch b5 is always in the off state in other systems and the other branches are not in the off state.

  The restoration target system determination unit 213 determines whether or not there is a load that causes a power failure in the reference system (S314). If there is no load that causes a power failure in the reference system (S314: NO), does the reference system satisfy the operational constraints? It is determined whether or not (S315). In addition, since operation restrictions differ depending on the operation location, it is changed to various variations, but at least other power also enters a power outage state due to the accident facility being turned off, and power is supplied to all loads. It shall be determined whether or not. For example, depending on the connection state of a branch, when a certain branch is turned off, other branches connected to the branch may be in a power failure (off) state. As described above, in the reference system, even if a power failure occurs during operation, only the accident facility is turned off, and the other power facilities are always kept in the same state as the system. However, in the determination process in step S315, recovery is performed. The target system determination unit 213 determines whether or not power facilities such as other branches and loads are turned off due to the accident equipment being turned off, and finally all loads are energized. It is determined whether or not. The determination of other operation restrictions is performed using, for example, power flow calculation. As a power flow calculation method, it is desirable that the processing is performed at high speed. For example, OSPF (Optimal Switching Power Flow: For example, R. Bacher, H. Glavitsch: “Network Topology Optimization with Security Constraints” IEEE Trans. PS, Vol. PWRS -1, No. 4, 103-111 (1986)).

  When the reference system satisfies the operation constraints (S315: YES), the reference operation system is determined as the recovery target system (S316), and the process is terminated.

  On the other hand, when there is a load that causes a power failure (S314: YES), or when the reference operation system does not satisfy the operation restrictions (S315: NO), the recovery target system determination unit 213 increments n (S317).

  The restoration target system candidate creation unit 212 changes the state of the other n−1 power facilities from the state of each power facility in the regular system and changes the state of other n−1 power facilities (the power facility in the on state is in the off state). And the off-state power equipment is turned on.) A system that has been turned on is created as a recovery target system candidate (S318). In the present embodiment, the recovery target system candidate creation unit 212 creates a state character string indicating the state of the branch b1-b9 (“011001000” in the example of FIG. 4), of which n−1 power other than the accident facility A character string corresponding to the equipment is changed ("1" is changed to "0", or "0" is changed to "1"). 6 and 7 are diagrams illustrating an example of the recovery target system candidate. For example, in the case of the recovery target system candidate 1 illustrated in FIG. 6, the character corresponding to the branch b4 is changed, and the status character string is “011101000”. Thus, in the case of the recovery target system candidate 2 shown in FIG. 7, the character corresponding to the branch b9 is changed and the status character string becomes “011001001”. As described above, in this embodiment, recovery target system candidates are created in the order from the shortest Hamming distance from the state character string related to the reference system, that is, from the closest to the reference system.

Here, the number of states of the power system can be calculated by simply calculating 2 ^b [b: number of power facilities (for example, number of power transmission lines + transformers) because each power facility can take two states of energization and power failure. Number))]. Therefore, in this embodiment, two restrictions are imposed to narrow down the number of states of the power system to be processed.

  One of them is to treat the same power equipment as a single power equipment when the power equipment has a redundant configuration (hereinafter referred to as “contraction”). For example, when the same electrical station (power plant, substation, etc.) is composed of a plurality of transmission lines, these multiple lines are handled as one power facility. When the same power equipment (bus) is composed of a plurality of transformers, the plurality of transformers are handled as one power equipment. By imposing such restrictions, the amount of calculation can be reduced without substantially reducing the supply reliability of the recovery target system candidate.

Ｍ＝1,2,…,ＭＭ，Ｎ＝1,2,…,ＭＮ
なお、上式において、ＭＭは常時停電状態にある電力設備の中から同時に通電状態とする最大数、ＭＮは常時通電状態にある電力設備の中から同時に停電状態とする最大数、ｏｆｆは常時停電状態にある電力設備の数、ｏｎは常時通電状態にある電力設備の数、ｍは常時停電状態にある電力設備から同時に通電状態とする数、ｎは常時通電状態の電力設備から同時に停電状態とする数である。基準系統周辺の範囲は、上式におけるＭＭやＭＮの値を変えることにより任意に設定することができる。 The second restriction is to narrow down the recovery target system candidates to be adopted to the configuration (periphery) that approximates the reference system in which the number of power outage facilities in the reference system is increased or decreased. For example, when the number of power outage facilities in the reference system is 2, the case where the number of power outage facilities is 1 or 3 is around the reference system. The system for power outage work is a (peripheral) work system that is close to the reference system, and the results have been obtained in the survey. By constraining the periphery of the system, the amount of calculation can be reduced without reducing the optimization accuracy. In addition, the number of systems when constraining around the reference system is obtained by, for example, the following equation.

M = 1,2, ..., MM, N = 1,2, ..., MN
In the above equation, MM is the maximum number that can be energized at the same time from power facilities that are always in a power outage state, MN is the maximum number that is always in a power outage state from power facilities that are always in an energized state, and off is a constant power outage. The number of power equipment in the state, on is the number of power equipment that is always energized, m is the number of power equipment that is always energized, and n is the power outage from the power equipment that is always energized. It is a number to do. The range around the reference system can be arbitrarily set by changing the values of MM and MN in the above equation.

  Next, the recovery target system candidate determination unit 213, for each of the recovery target system candidates, has a load that causes a power failure in the recovery target system candidate (S319: YES), or the recovery target system candidate does not satisfy the above-described operational constraints. In this case (S320: NO), the recovery target system candidate is deleted (S321).

  When there is no recovery target system candidate (S322: 0), the recovery target system determination unit 213 repeats the processing from step S317, and when there is only one recovery target system candidate (S322: 1), The recovery target system candidate is set as a recovery target system (S323). When there are two or more recovery target system candidates (S322: 2 or more), the recovery target system determination unit 213 calculates the supply reliability for each recovery target system candidate (S324), and the recovery with the highest supply reliability is performed. A target system candidate is determined as a recovery target system (S325).

  As described above, the state character string relating to the reference system (in this embodiment, the same as the accident system shown in FIG. 4) in which the branch b5 is turned off from the normal system shown in FIG. 3, is “011001000”. The state character string related to the recovery target system candidate 1 shown in FIG. 6 is “011101000”, and the state character string related to the recovery target system candidate 2 shown in FIG. 7 is “011001001”. Accordingly, both the recovery target system candidate 1 and the recovery target system candidate 2 have a Hamming distance of “1” from the reference system. If the supply reliability of the recovery target system candidate 1 is a and the supply reliability of the recovery target system candidate 2 is b, for example, if a ≧ b, the recovery target system candidate 1 is determined as the recovery target system, and a If <b, the restoration target system candidate 2 can be determined as the restoration target system.

  As described above, according to the restoration work support system of the present invention, it is possible to determine a restoration target system that can be quickly restored within the scope of operation restrictions. Furthermore, when there are a plurality of recovery target system candidates having the same hamming distance, a system with high supply reliability can be set as a recovery target system. That is, the recovery work support system of the present invention can determine the recovery target system so as to increase the profit for the customer while enabling quick recovery.

== System switching procedure plan creation process ==
When the recovery target system is determined as described above, next, output processing of information (hereinafter referred to as “operation sheet”) indicating a procedure for shifting from the accident system to the recovery target system is performed. The transition of the state of the power system from the accident system to the recovery target system is performed by powering out the power facilities one by one. The restoration work support system creates (outputs) an operation slip, and an operator who performs a power system control operation performs a power system control operation based on the operation slip.

FIG. 8 is a diagram illustrating a flow of operation sheet output processing.
The switching work plan creation unit 214 first creates an accident system (S510). That is, the switching work plan creation unit 214 determines whether or not a power failure occurs due to the accident facility being turned off for each of the other power equipments that constitute the regular system, with the accident facility turned off in the regular system. Then, a system in which other power facilities that are out of power are turned off is created as an accident system. The switching work plan creation unit 214 extracts a power facility whose state changes between the accident system and the recovery target system (hereinafter referred to as “difference facility”) (S511). FIG. 9 shows an example of the state of each power facility in each of the accident system and the recovery target system. In the example of FIG. 9, the power facilities b3, b4, and b9 change in state between the accident system and the recovery target system (portions indicated by circles in the figure).

  The switching work plan creation unit 214 first sets the accident system as the current system (S512), and the number of power facilities in the energized state (hereinafter referred to as “the number of energized facilities”) is calculated from the number of energized facilities in the current system. 1 ”is subtracted, and a system in which the state of the differential equipment is different from the state of the differential equipment in the current system is created (S513). In the example of FIG. 9, when the accident system is the current system, the state of the differential equipment changes and the number of energized equipment is reduced by 1. Therefore, a system in which the power equipment b3 is in a power outage state (0) is created. become.

  The switching work plan creation unit 214 selects the created systems (hereinafter referred to as “operating system candidates”) as operating systems one by one in descending order of supply reliability (S514), and selects the currently operating system for the selected operating system. Then, it is determined whether or not a constraint relating to changing the state of the power equipment from the current system to the operating system (hereinafter referred to as “operation constraint”) is satisfied (S515). In the present embodiment, as the operation constraint, it is adopted that the range of the phase difference angle between the current system and the operating system is within 15 °. When the operating system satisfies the operation constraint (S515: YES), the process proceeds to (S519) described later.

  When none of the above operating system candidates satisfies the operation constraints, the switching work plan creation unit 214 indicates that the number of energized facilities is the number obtained by adding “1” to the number of energized facilities in the current system, and the state of the differential facility is currently An in-operation system candidate that is different from the state of the differential equipment in the system is created (S516). In the example of FIG. 9, when the accident system is the current system, a work system candidate in which the state of the power equipment b4 or b9 is in the energized state (1) is selected.

  The switching work plan creation unit 214 selects the created operating system candidates one by one as the operating system in descending order of supply reliability (S517), and for the selected operating system, the same as (S515) above. Whether or not the operation constraint is satisfied is determined (S518). If the operating system satisfies the operation constraint (S518: YES) or if the operating system satisfies the operation constraint in (S515) (S515: YES), the switching work plan creation unit 214 sets the operating system as the current system. (S519). When the current system and the work system match (S520: YES), the switching work plan creation unit 214 outputs the accident system, the operating system, and the recovery target system to the output device 206 (S521), and ends the process. . If the current system and the recovery target system are not the same (S521: NO), the processing from (S513) is repeated.

  On the other hand, when none of the above-described operating system candidates satisfy the operation constraints, error processing such as displaying a message indicating that the procedure satisfying the operation constraints cannot be performed is performed (S523), and the processing is terminated.

  As described above, each state from the accident system to the restoration target system through the operating system is output. As a result, it is possible to indicate which power facility is going through a power failure, and an operation slip is created. Therefore, it is possible to automatically or semi-automatically perform a power failure of the power facility based on the created operation slip, and it is possible to perform processing as a series of flows from the power failure work plan to the system switching procedure plan.

  FIG. 10 is a diagram for explaining the transition from the accident system to the recovery target system. In the example of FIG. 10, the power facility b3 is changed from the accident system to the power failure state by the first operation (S601), the power facility b4 is turned on by the second operation (S602), and the power facility by the third operation. The procedure of setting b9 to the energized state (S603) is shown. In this way, it is easy to create an operation sheet for shifting from the accident system to the recovery target system by establishing a procedure for power failure of each power facility based on the transition of the state of the power system from the accident system to the recovery target system. And it can be created reliably. By creating the operation slip, the operator who performs the control operation of the power system can easily and surely grasp the power equipment to be subjected to the power failure at each stage of the operating system. In addition, the operator can easily perform grid operation of the power system by performing a power failure of the power equipment so as to match each state of the output operation slip, and quickly recover from the accident. At the same time, operational errors can be prevented.

  Note that in (S514) in FIG. 8, the operating system candidates may be selected one by one in order from the one in which the operating system candidate supply reliability is high and the phase difference angle is small. In this case, since it is determined whether the operation constraints are satisfied in order from the highest possibility of satisfying the operation constraints, if the in-operation system candidate does not satisfy the operation constraints, another operation is performed. It is possible to proceed to (S516) without determining whether the middle system candidate satisfies the operation constraint.

  Further, in this embodiment, a system having a close Hamming distance from the reference system is determined as the recovery target system, but a system having a close Hamming distance from the normal system may be determined as the recovery target system. In general, the system always has a high supply reliability, and the surrounding systems are also expected to have a high supply reliability. Therefore, the reliability of the recovery target system is expected to be high.

  In addition, a system having a hamming distance close to a system for performing a power failure operation for a part of equipment in the continuous system (hereinafter referred to as “work system”) may be determined as a recovery target system. In general, as the number of power outage facilities increases, the supply reliability decreases. Therefore, the work system is often selected from the periphery of the normal system, and it is expected that the supply reliability is as high as that of the normal system.

  Furthermore, a system that is close to the Hamming distance from the accident system may be determined as a recovery target system. In this case, since the state change of the electric power equipment which concerns on recovery work decreases, it becomes possible to perform recovery rapidly.

  Although the present embodiment has been described above, the above embodiment is intended to facilitate understanding of the present invention and is not intended to limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes equivalents thereof.

200 Information processing apparatus 201 CPU
202 Memory 202c Program 205 Input Device 206 Output Device 207 Recording Medium 208 Storage Device 211 Accident Equipment Designation Unit 212 Recovery Target System Candidate Creation Unit 213 Recovery Target System Determination Unit 214 Switching Work Plan Creation Unit 231 Regular System Storage Unit

Claims (9)

A system that supports recovery from an accident in a power system composed of a plurality of power facilities,
An accident facility designation unit that accepts designation of an accident facility that is the power facility where the accident occurred;
A recovery target system candidate creation that creates a plurality of recovery target system candidates that satisfy predetermined operational constraints and that the accident equipment is in a power outage state among combinations of the states of the power facilities constituting the power system And
Create a first character string in which characters representing the state of each power facility constituting a given system are arranged, and for each of the recovery target system candidates, each power facility that constitutes the recovery target system candidate Creating a second character string in which characters representing the state are arranged, and calculating a Hamming distance between the first and second character strings;
A recovery target system determination unit that determines one of the recovery target system candidates as a recovery target system according to the Hamming distance;
A power system restoration support system comprising: The power system restoration support system according to claim 1,
The predetermined system is always a system;
Power system restoration support system characterized by The power system restoration support system according to claim 1,
The predetermined system is a work system for performing a power outage work for at least a part of the power equipment that always constitutes the system,
Power system restoration support system characterized by The power system restoration support system according to claim 1,
The predetermined system is a system in which the accident facility is always in a power outage state in the system,
Power system restoration support system characterized by A power system accident countermeasure support system according to any one of claims 1 to 4,
The recovery target system determination unit determines the recovery target system candidate with the shortest Hamming distance as the recovery target system;
Power system accident countermeasure support system characterized by A power system accident countermeasure support system according to any one of claims 1 to 5,
A reliability information storage unit that stores reliability information for calculating supply reliability of the power system in association with information for specifying the power equipment,
The recovery target system determination unit calculates the supply reliability for each of the recovery target system candidates based on the state of the power equipment constituting the recovery target system candidate and the corresponding reliability information, Determining the recovery target system according to a Hamming distance and the supply reliability;
Power system accident countermeasure support system characterized by A power system accident countermeasure support system according to claim 6,
The recovery target system determination unit calculates the supply reliability for each recovery target system candidate with the shortest Hamming distance only when there are a plurality of recovery target system candidates with the shortest Hamming distance, and the calculation Determining the one with the highest supply reliability as the recovery target system,
Power system accident countermeasure support system characterized by A method for supporting countermeasures against accidents in a power system composed of a plurality of power facilities,
A computer having a CPU and a memory
Accept the designation of the accident facility that is the power facility where the accident occurred,
Among the combinations of the states of the power equipment constituting the power system, create a plurality of recovery target system candidates that satisfy predetermined operational constraints and the accident equipment is in a power failure state,
Create a first character string in which characters representing the state of each power facility constituting a given system are arranged, and for each of the recovery target system candidates, each power facility that constitutes the recovery target system candidate Creating a second character string in which characters representing the state are arranged, calculating a Hamming distance between the first and second character strings,
Determining one of the recovery target system candidates as a recovery target system according to the Hamming distance;
A power system accident countermeasure support method characterized by A program for supporting countermeasures against accidents in a power system composed of a plurality of power facilities,
In a computer having a CPU and a memory,
Accepting designation of an accident facility that is the power facility where the accident occurred;
Steps of creating a plurality of recovery target system candidates that satisfy predetermined operational constraints among combinations of the states of the power facilities constituting the power system, and the accident facility is in a power outage state;
Create a first character string in which characters representing the state of each power facility constituting a given system are arranged, and for each of the recovery target system candidates, each power facility that constitutes the recovery target system candidate Creating a second character string in which characters representing the state are arranged, and calculating a Hamming distance between the first and second character strings;
Determining one of the recovery target system candidates as a recovery target system according to the Hamming distance;
A program for running

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