Power system planning and operation device, method and system

Abstract

To provide a power system plan operation apparatus that enables reduction in social cost and improvement in resilience of a power system.SOLUTION: A power system plan operation apparatus 10 comprises: a disaster information selection unit 21 that selects disaster information data on a disaster type to be coped with, and takes it as disaster information selection result data; a disaster countermeasure candidate calculation unit 22 that calculates a disaster countermeasure candidate using the disaster information selection result data, system maintenance countermeasure candidate data, and system operation countermeasure candidate data, and takes it as disaster countermeasure candidate calculation result data; a reliability economical efficiency index value calculation unit 23 that calculates a reliability economical efficiency index value using the disaster countermeasure candidate calculation result data, system data that is information on a configuration of a power system, damage cost data that is information on damage amounts, and a reliability economical efficiency index data that is information obtained by indexing a relation between reliability and economical efficiency, and takes it as reliability economical efficiency index value data; and a disaster countermeasure determination unit 24 that determines a disaster countermeasure using the reliability economical efficiency index value data.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an apparatus, method and system for planning and operating a power system that enables reduction of social costs and improvement of power resilience. [Background technology]

[0002] Electric power systems are designed and operated to maintain system stability (synchronous stability, voltage stability, frequency stability, overload, etc.) and prevent power outages even if a single fault occurs. This is called the N-1 standard.

[0003] In the event of a disaster such as an earthquake, typhoon, or lightning strike, there is a possibility of multiple failures occurring simultaneously or consecutively. In the event of multiple failures, if there is concern that the occurrence of such failures will have a significant social impact, it is necessary to consider measures to mitigate this impact.

[0004] Patent Document 1 is known as background technology related to measures in the event of a disaster. Patent Document 1 describes a power supply system that supplies power to each consumer via a smart meter provided in the equipment of each consumer in a smart grid having an electric power transmission and distribution network that connects a centralized power generation source, a distributed power generation source, and each consumer along the electric power transmission and distribution network, the smart meter comprising a seismic intensity detection means that detects the seismic intensity of an earthquake when an earthquake occurs, and a power supply control means that cuts off the supply of power from the electric power transmission and distribution network to the equipment when the seismic intensity detected by the seismic intensity detection means is equal to or higher than a preset threshold value, and information processing means provided on the power supply side that acquires shutoff information including a notice that the power supply has been shut off by the switching means and information on the number of times the power supply to each of the consumer's facilities has been shut off, as well as seismic intensity information detected by the seismic intensity detection means, and acquires, based on the acquired seismic intensity information, information on the damage situation caused by the earthquake for the facilities in which the smart meter is installed, for each district, wherein the information processing means prioritizes districts with a fewer number of shutoffs of the power supply to each of the consumer's facilities based on the seismic intensity information in order to lift the shutoff of the power supply. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2014-187743 A Summary of the Invention [Problem to be solved by the invention]

[0006] In Patent Document 1, when a disaster (earthquake) occurs, if the result of detecting the seismic intensity of the earthquake is equal to or greater than a preset threshold, the power supply from the power system to the equipment is cut off. Therefore, when Patent Document 1 is applied as a measure against multiple accidents in the power system, there is a problem that damage costs will always occur due to the cutoff of the power supply (power outage). In addition, the measure taken in Patent Document 1 is only the cutoff of the power supply, and no comparison is made with other measures such as the expansion of equipment. Although the expansion of equipment incurs countermeasure costs, it is possible to reduce vulnerability to disasters by the expansion. Therefore, it is possible to reduce the damage costs associated with the cutoff of the power supply (power outage). Furthermore, by combining measures related to the expansion of equipment with the cutoff of the power supply, it is possible to reduce the overall social cost, which is a combination of the countermeasure costs and the damage costs. In addition, in recent years, the frequency of occurrence of events called rare-frequency large-scale disasters such as typhoons and earthquakes has been increasing. While such events occur very rarely, they have a large impact on a wide range of equipment. Therefore, when Patent Document 1 is applied, there is a risk that a huge amount of power supply will be cut off and a large-scale power outage (blackout) will occur.

[0007] In view of the above, an object of the present invention is to provide an apparatus, method, and system for planning and operating a power system that can reduce social costs and improve the resilience of the power system. [Means for solving the problem]

[0008] In order to solve the above problem, for example, the configuration described in the claims is adopted. The present application includes a plurality of means for solving the above problem, and an example of the means is as follows: "A power system planning and operation device for disaster occurrence, the power system planning and operation device is characterized by including: a disaster information selection unit that selects disaster information data of a disaster type to be dealt with from disaster information data for each disaster type and sets it as disaster information selection result data; a disaster countermeasure candidate calculation unit that calculates disaster countermeasure candidates using the disaster information selection result data, system maintenance measure candidate data which is information on preparing system facilities in preparation for disasters, and system operation measure candidate data which is information on determining system operation measures in preparation for disasters, and sets it as disaster countermeasure candidate calculation result data; a reliability economics index value calculation unit that calculates a reliability economics index value for the disaster countermeasure candidate calculation result using the disaster countermeasure candidate calculation result data, system data which is information on the configuration of the power system, damage cost data which is information on the amount of damage at the time of the assumed disaster type, and reliability economics index data which is information that indexes the relationship between reliability and economics, and sets it as reliability economics index value data; and a disaster countermeasure determination unit that determines disaster countermeasures using the reliability economics index value data."

[0009] The present invention is also characterized in that "a power system planning and operation device is linked to one or more of a central load dispatching system, a system planning system, a system stabilization system, a main load dispatching system, a system load dispatching system, and a market management system, and the disaster control result data obtained by the power system planning and operation device is transmitted to the linked systems."

[0010] The present invention is also characterized in that "a power system planning and operation method for the occurrence of a disaster, which selects disaster information data of a disaster type to be responded to from disaster information data for each disaster type, as disaster information selection result data, calculates disaster countermeasure candidates using the disaster information selection result data, system maintenance measure candidate data which is information regarding the preparation of system facilities in preparation for disasters, and system operation measure candidate data which is information regarding the determination of system operation measures in preparation for disasters, as disaster countermeasure candidate calculation result data, calculates a reliability economic efficiency index value for the disaster countermeasure candidate calculation result using the disaster countermeasure candidate calculation result data, system data which is information regarding the configuration of the power system, damage cost data which is information regarding the amount of damage in the event of an assumed disaster type, and reliability economic efficiency index data which is information that indexes the relationship between reliability and economic efficiency, as reliability economic efficiency index value data, and determines disaster countermeasures using the reliability economic efficiency index value data." Effect of the Invention

[0011] According to the present invention, it is possible to reduce social costs and improve the resilience of the power system. [Brief description of the drawings]

[0012] [Figure 1] 1 is a diagram showing an example of the overall configuration of a power system planning and operation device according to a first embodiment; [Diagram 2] 2 is a diagram showing an example of the overall configuration of a power system planning operation system when the power system planning operation device of FIG. 1 is applied, particularly from the viewpoint of hardware outside the power system planning operation device. [Diagram 3] FIG. 2 is a diagram showing an example of a hardware configuration of the power system planning operation device 10 in FIG. [Figure 4] 2 is a diagram showing a configuration example showing the contents of disaster countermeasure calculation program data of the power system planning and operation device of FIG. 1; [Diagram 5] FIG. 2 is a diagram showing an example of disaster information data D31 stored in the disaster information database DB31. [Figure 6] FIG. 13 is a diagram showing an example of system development measure data D32 in the system development measure database DB32. [Figure 7]FIG. 2 is a diagram showing an example of system maintenance measure data D33 stored in a system operation measure database DB33. [Figure 8] FIG. 2 is a diagram showing an example of damage cost data D35 stored in a damage cost database DB35. [Figure 9] FIG. 2 is a diagram showing an example of reliability economic performance index data D36 stored in a reliability economic performance index database DB36. [Figure 10] FIG. 13 is a diagram showing an example of disaster countermeasure candidate selection result data D42 stored in a disaster countermeasure candidate selection result database DB42. [Figure 11] FIG. 13 is a diagram showing an example of disaster countermeasure candidate selection result data D43 stored in a reliability economic efficiency index value calculation result database DB43. [Figure 12] FIG. 13 is a diagram showing an example of disaster countermeasure decision result data D44 stored in a disaster countermeasure decision result database DB44. [Figure 13] 4 is a flowchart showing an example of a disaster countermeasure decision process performed by the power system planning and operation device according to the first embodiment. [Figure 14] FIG. 2 is a diagram showing an example of a screen display of the power system planning operation device according to the first embodiment. [Figure 15] FIG. 2 is a diagram showing an example of a screen display of the power system planning operation device according to the first embodiment. [Figure 16] FIG. 13 is a diagram showing an example of the overall configuration of a power system planning and operation device according to a second embodiment. [Figure 17] 16 is a diagram showing an example of the overall configuration of a power system plan operation system when the power system plan operation device of FIG. 15 is applied, particularly from the viewpoint of hardware outside the power system plan operation device. [Figure 18] FIG. 13 is a diagram showing an example of the overall configuration of a power system planning and operation device according to a third embodiment. [Figure 19] 16 is a diagram showing an example of the overall configuration of a power system plan operation system when the power system plan operation device of FIG. 15 is applied, particularly from the viewpoint of hardware outside the power system plan operation device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. EXAMPLES

[0014] Fig. 1 is a diagram showing an example of the overall configuration of a power system planning and operation device 10 according to Example 1. Note that Fig. 1 illustrates the power system planning and operation device 10 from the viewpoint of its functional configuration.

[0015] The power system planning and operation device 10 in FIG. 1 is made up of a disaster countermeasure calculation input data DB 30, a disaster countermeasure calculation unit 20, a disaster countermeasure calculation result database DB 40, and a display unit 50.

[0016] The power system planning and operation device 10 stores disaster information data D31, system improvement measure candidate data D32, system operation measure candidate data D33, system data D34, damage cost data D35, and reliability economics index data D36 in a disaster countermeasure calculation input data DB30, and uses these data to select disaster information in a disaster countermeasure calculation unit 20, calculate disaster countermeasure candidates for the selected disaster information, calculate a reliability economics index value for the calculated disaster countermeasure candidates, and determine disaster countermeasures based on the calculated reliability economics index value. As a result of these processes, disaster information selection result data D41, disaster countermeasure candidate calculation result data D42, reliability economics index value calculation result data D43, and disaster countermeasure decision result data D44 are formed and stored in a disaster countermeasure calculation result database DB40, and are output and displayed on a display unit 50.

[0017] The disaster countermeasure calculation input database DB30 is composed of the following databases DB31 to DB36.

[0018] The disaster information database DB31 stores disaster information data D31, the details of which are exemplified in FIG. 5, which will be described later.

[0019] The system maintenance measure candidate database DB32 stores system maintenance measure candidate data D32, the details of which are exemplified in FIG. 6, which will be described later.

[0020] The system operation measure candidate database DB33 stores system operation measure candidate data D33, the details of which are exemplified in FIG. 7, which will be described later.

[0021] The system database DB34 stores system data D34. The system data D34 stores system configuration, line impedance (R+jX), earth capacitance (susceptance: jB), data required for system configuration and state estimation (such as a batt data threshold), generator data, and other data required for power flow calculation, state estimation, and time series change calculation.

[0022] The damage cost database DB35 stores damage cost data D35, the details of which are exemplified in FIG. 8, which will be described later.

[0023] The reliability economics index database DB36 stores reliability economics index data D36, the details of which are exemplified in FIG. 9, which will be described later.

[0024] The disaster countermeasure calculation unit 20 is a function for calculating disaster countermeasures, and the contents of a series of processes are shown in the flowchart of Fig. 13. The disaster countermeasure calculation unit 20 is also made up of the following processing functions 21 to 24.

[0025] The disaster information selection unit 21 is a function that selects disaster information data D31 stored in the disaster information database DB31, and outputs the selection result to the disaster information selection result database DB41 as disaster information selection result data D41.

[0026] The disaster countermeasure candidate calculation unit 22 is a function for calculating candidate countermeasures for the disaster selected by the disaster information selection unit 21. Using the disaster information selection result data D41, the system development measure candidate data D32, and the system operation measure candidate data D33, the disaster countermeasure candidate calculation unit 22 calculates disaster countermeasure candidate data related to system development and system operation, and outputs the data as disaster countermeasure candidate calculation result data D42 to a disaster countermeasure candidate calculation result database DB42.

[0027] The reliability economics index value calculation unit 23 is a function for calculating a reliability economics index value for the disaster countermeasure candidate calculated by the disaster countermeasure candidate calculation unit 22. Using the disaster countermeasure candidate calculation result data D42, the system data D34, the damage cost data D35, and the reliability economics index data D36, the reliability economics index value of the disaster countermeasure candidate related to system development and system operation is calculated, and output to a reliability economics index value calculation result database DB43 as reliability economics index value calculation result data D43.

[0028] The disaster countermeasures decision unit 24 is a function for deciding disaster countermeasures based on the reliability economics index value calculated by the reliability economics index value calculation unit 23. Using the reliability economics index value calculation result data D43, the disaster countermeasures related to system development and system operation are decided, and output to the disaster countermeasures decision result database DB44 as disaster countermeasures decision result data D44.

[0029] The disaster countermeasure calculation result data D40 is composed of the following databases DB41 to DB44.

[0030] The disaster information selection result database DB41 stores selection result data D41 selected from the disaster information stored in the disaster information database DB31.

[0031] Disaster countermeasure candidate calculation result data D42, the details of which are exemplified in FIG. 10, which will be described later, is stored in the disaster countermeasure candidate calculation result database DB42.

[0032] The reliability economic performance index value calculation result database DB43 stores reliability economic performance index value calculation result data D43, the details of which are exemplified in FIG. 11, which will be described later.

[0033] The disaster countermeasures decision result database DB44 stores disaster countermeasures decision result data D44, the details of which are exemplified in FIG. 12, which will be described later.

[0034] The data stored in the disaster countermeasure calculation result database DB40 is not only the data as the calculation result, but also the data of the result at the time of intermediate processing, and can be reused in appropriate situations. Detailed examples of the stored contents will be described later with reference to each figure.

[0035] Various data handled by the power system planning operation device 10 are appropriately processed into an easy-to-read format and displayed on the display unit 50. The display unit 50 also includes input means such as a mouse and a keyboard, and the input results are appropriately reflected on the display screen.

[0036] Fig. 2 is a diagram showing an example of the overall configuration of a power system planning and operation system when the power system planning and operation device 10 of Fig. 1 is applied, particularly from the viewpoint of hardware external to the power system planning and operation device 10. The power system planning and operation device 10 can transmit and receive data via a communication network 300 with a monitoring and control terminal 301 that monitors and controls a synchronous machine power source 304 such as a thermal power plant, a nuclear power plant, or a hydroelectric power plant, and a renewable energy power source 303 such as a solar power plant or a wind power plant, which are connected to a power system 306, and a monitoring terminal 30 that monitors a measuring device 305 that measures the power flow distribution in the power system.

[0037] FIG. 3 is a diagram showing an example of the overall configuration of a power system planning and operation system when the power system planning and operation device 10 of FIG. 1 is applied, particularly from the viewpoint of the database and hardware inside the power system planning and operation device 10. In FIG.

[0038] The hardware configuration of the power system planning and operation device 10 shown in Fig. 3 will be described. In the power system planning and operation device 10, a display unit 105, an input unit 103 such as a keyboard or a mouse, a communication unit 104, a computer or computer server (CPU: Central Processing Unit) 101, a memory 102, a disaster countermeasure calculation input database DB30 (disaster information database DB31, system improvement measure candidate database DB32, system operation measure candidate database DB33, system database DB34, damage cost database DB35, reliability economics index data DB36), a disaster countermeasure calculation result database DB40 (disaster information selection result database DB41, disaster countermeasure candidate calculation result database DB42, reliability economics index value calculation result database DB43, disaster countermeasure decision result database DB44), and a disaster countermeasure calculation program database DB20 are connected to a bus line 91.

[0039] Of these, the display unit 105 is configured as, for example, a display device. Also, the display unit 105 may be configured to use, for example, a printer device, an audio output device, or the like instead of or together with the display device.

[0040] The input unit 103 can be configured to include at least one of a keyboard switch, a pointing device such as a mouse, a touch panel, and a voice instruction device.

[0041] The communication unit 104 includes a circuit and a communication protocol for connecting to the communication network 300 .

[0042] The CPU 101 reads and executes a predetermined computer program from the disaster countermeasure calculation program database DB20. The CPU 101 may be configured as one or a plurality of semiconductor chips, or may be configured as a computer device such as a calculation server.

[0043] The memory 102 is configured as, for example, a RAM (Random Access Memory), and stores computer programs read from the disaster countermeasure calculation program database DB20, and stores calculation result data and image data required for each process. The screen data stored in the memory 102 is sent to the display unit 105 and displayed. Examples of the displayed screen will be described later.

[0044] Here, the contents stored in the disaster countermeasure calculation program database DB20 will be described with reference to Fig. 4. Fig. 4 is a diagram showing a configuration example showing the contents of the program data of the power system planning operation device 10. The disaster countermeasure calculation program database DB20 stores, for example, a disaster information selection program P21, a disaster countermeasure candidate calculation program P22, a reliability economics index value calculation program P23, a disaster countermeasure decision program P24, and a display program P50.

[0045] Returning to Figure 3, the CPU 101 executes the calculation programs (disaster information selection program P21, disaster countermeasure candidate calculation program P22, reliability economic efficiency index value calculation program P23, disaster countermeasure decision program P24, display program P50) read from the disaster countermeasure calculation program database DB20 to the memory 102 to select disaster information, calculate disaster countermeasure candidate programs, calculate the reliability economic efficiency index value, decide on disaster countermeasure programs, specify image data to be displayed, search for data in various databases, etc.

[0046] The memory 102 is a memory for temporarily storing calculation temporary data and calculation result data such as image data for display, disaster information selection result data D41, disaster countermeasure candidate calculation result data D42, reliability economic efficiency index value calculation result data D43, disaster countermeasure decision result data D44, etc., and the CPU 101 generates necessary image data and displays it on the display unit 105 (for example, a display screen). Note that the display unit 105 of the power system planning operation device 10 may only be a simple screen for rewriting each program and database.

[0047] The power system planning and operation device 10 stores databases relating to roughly ten inputs and outputs. The following describes the disaster information database DB31, the system improvement measure candidate database DB32, the system operation measure candidate database DB33, the damage cost database DB35, the reliability economics index value database DB36, the disaster measure candidate calculation result database DB42, the reliability economics index value calculation result data DB43, and the disaster measure decision result data DB44, excluding the system database DB34 and the disaster information selection result database DB41, which have already been described.

[0048] In the disaster information database DB31, disaster information data D31 is stored as shown in Fig. 5. The disaster information data D31 is stored for each disaster type (D311A, D312B). Fig. 5 shows earthquake (D311A) and typhoon (D311B) as examples of disaster types. In the case of earthquake (D311A), the disaster information data D31 stores information such as the earthquake case name (D312A), the epicenter of the earthquake (D313A), the seismic intensity of the earthquake (D314A), facilities damaged by the earthquake (D315A), the details of the damage (D316A), and the probability of damage occurrence (D317A).

[0049] For example, earthquake case CE1 in Figure 5 is an earthquake with a seismic intensity of 7 at point A, and the damaged facilities and damage contents caused by the earthquake are the failure of power plant G10 and power plant G20 and the interruption of transmission line L10, and the respective damage occurrence probabilities are 0.00011, 0.00005, and 0.00008.

[0050] In the case of typhoons, the disaster information data D31 stores information such as the typhoon case name (D311B), date and time (D312B), the central position of the typhoon (D313B), the central pressure of the typhoon (D314B), the maximum wind speed of the typhoon (D315B), the radius of the typhoon's storm area (D316B), the radius of the typhoon's strong wind area (D317B), facilities damaged by the typhoon (D318B), the details of the damage (D319B), and the probability of damage occurrence (D320B).

[0051] For example, typhoon case CT1 in Figure 5 has the following characteristics: At 18:00 on DD / MM / YYYY, the center is N1 north latitude, E1 east longitude, with a central pressure of 1000hPa, maximum wind speed of 30m / s, storm area radius of 50km, and strong wind area radius of 300km, indicating that there is no equipment damaged by the typhoon at that time, and no damage details or probability of damage occurrence. On the other hand, at 21:00 on DD / MM / YYYY, the center is N2 north latitude, E2 east longitude, with a central pressure of 950hPa, maximum wind speed of 40m / s, storm area radius of 70km, and strong wind area radius of 400km, indicating that the equipment damaged by the typhoon at that time and the damage details are the shutdown of power line L21, and the probability of damage occurrence is 0.05.

[0052] The disaster type (D311A, D311B) may be information on disasters other than earthquakes and typhoons, such as tsunamis, fires, lightning strikes, snowfall, etc. By including such information, it is possible to specify the damage to the power system caused by the disaster. In addition, it is possible to quantitatively and highly accurately calculate the reliability economics index value for disaster prevention measures candidates.

[0053] The system maintenance measure candidate database DB32 stores system maintenance measure candidate data D32 as shown in Fig. 6. The system maintenance measure candidate data D32 is stored for each system maintenance measure type (D321A, D321B, D321C).

[0054] 6 shows cases of power transmission line addition (D321A), substation addition (D321B), and phase modifying equipment addition (D321C) as examples of system development measure types. In the case of power transmission line addition, the system development measure candidate data D32 stores information such as a power transmission line addition case name (D322A), the name of the power transmission line (D323A), the number of circuits of the power transmission line (D324A), the names of substations at the sending end and receiving end of the power transmission line (D325A), and the cost of adding the power transmission line (D326A).

[0055] For example, the transmission line expansion case CL1 in Fig. 6 indicates that a transmission line L1 with one circuit connecting a sending end substation S1 and a receiving end substation S2 will be expanded at a cost of 100 billion yen. In the case of expanding a substation, the system improvement measure candidate data D32 stores information such as the substation expansion case name (D322B), the name of the substation (D323B), the number of transformer banks at the substation (D324B), and the cost of expanding the substation (D325B).

[0056] For example, the substation expansion case CS1 in Fig. 6 indicates that a substation S1 with two banks will be expanded at a cost of 10 billion yen. In the case of expanding a phase modifying facility, the system improvement measure candidate data D32 includes information such as the phase modifying facility expansion case name (D322C), the name of the phase modifying facility (D323C), the number of phase modifying facilities (D324C), the name of the substation where the phase modifying facility will be expanded (D325C), and the cost of expanding the phase modifying facility (D326C).

[0057] For example, the phase modifying equipment expansion case CY1 in Fig. 6 shows that one phase modifying equipment Y1 is added to substation S1 at a cost of 5 million yen. Here, the phase modifying equipment is a power capacitor (SC: Static Condenser) or a shunt reactor (ShR: Shunt Reactor), etc.

[0058] In addition, the system improvement measure types (D321A, D321B, D321C) may be system improvement measures other than the addition of transmission lines, substations, and phase modifying equipment, such as direct current equipment (HVDC: High Voltage Direct Current), synchronous phase modifying machines, static var compensators (SVC: Static Var Compensators), self-commutated SVCs, SVGs (Static Var Generators), STATCOMs (STATic synchronous COMpensators), phase shifters, or other system improvement measures.

[0059] By including the above information, it is possible to specify disaster prevention measures related to grid development. Also, it is possible to quantitatively and highly accurately calculate the reliability economics index value for the disaster prevention measures.

[0060] The system operation measure candidate database DB33 stores system operation measure candidate data D33 as shown in Fig. 7. The system operation measure candidate data D33 is stored for each system operation measure type (D331).

[0061] 7 shows a case of power plant operation change as an example of a system operation measure type. In the case of a power plant operation change, the system operation measure candidate data D33 stores information such as the power plant name (D333), the current output value, the upper output limit value, and the lower output limit value (D334) of the power plant, the cost of increasing (raising) the output of the power plant, and the cost of decreasing (reducing) the output (D335) for each date and time (D332).

[0062] For example, Figure 7 shows that at 00:00 on DD / MM / YYYY, the current output of power plant G1 is 500 MW, the upper output limit is 1000 MW, the lower output limit is 300 MW, the cost of increasing output is 6 yen / kWh, and the cost of decreasing output is -6 yen / kWh.

[0063] The system operation measure type (D311) may be a system operation measure other than a change in the operation of a power plant, such as starting or stopping a power plant, changing a substation tap, opening or closing a substation phase modifying equipment, opening or closing a transmission line, or other system operation measures.

[0064] By including the above information, it is possible to specify disaster countermeasure candidates related to system operation. Also, it is possible to quantitatively and highly accurately calculate the reliability economics index value for the disaster countermeasure candidates.

[0065] The damage cost database DB35 stores damage cost data D35 as shown in Fig. 8. The damage cost data D35 stores information such as the name of a substation (D351) and the cost associated with a power outage at the substation (D352).

[0066] For example, Fig. 8 shows that a power outage at substation S1 will cause damage costing 4000 yen / kWh. The damage cost data D35 may be the cost for each individual consumer, the cost for each consumer type (general household, factory, office, hospital, etc.), or other types. By including the above information, the reliability economic efficiency index value for disaster prevention measures candidates can be calculated quantitatively and with high accuracy.

[0067] The reliability economic performance index database DB36 stores reliability economic performance index data D36 as shown in Fig. 9. The reliability economic performance index data D36 stores information such as a reliability economic performance index type (D361) and a weighting coefficient for each index (D362).

[0068] For example, FIG. 9 shows that the types of reliability economic index include countermeasure cost and damage cost expectation, the weight of countermeasure cost is 1, and the weight of damage cost expectation is 1000. The reliability economic index value type (D361) may be LOLP (Loss Of Load Probability), LOLE (Loss Of Load Expectation), EUE (Expected Unserved Energy), VOLL (Value Of Lost Load), or an index related to system stability (synchronization stability, voltage stability, frequency stability, overload, etc.) (whether or not a generator is out of step, the maximum value of the internal phase difference angle of the generator, the load margin up to the nose point of the PV curve, short circuit capacity, short circuit capacity ratio (SCR), maximum frequency drop value, RoCoF (Rate Of Change Of Frequency), overload rate of the transmission line, overload amount of the transmission line), or other index. By including the above information, the reliability economic index value for the disaster countermeasure candidate can be quantitatively calculated.

[0069] In the disaster countermeasure candidate calculation result database DB42, disaster countermeasure candidate calculation result data D42 is stored as shown in Fig. 10. The disaster countermeasure candidate calculation result data D42 is stored for each disaster countermeasure case (D421). In Fig. 10, CC1 and CC1 are presented as disaster countermeasure cases (D421). The disaster countermeasure case (D421) stores information such as system development measures (D421A) and system operation measures (D421B).

[0070] The system improvement measures (D421A) are stored for each system improvement measure type (D422A, D423A, D424A) corresponding to the system improvement measures stored in the system improvement measure candidate data D32. When the system improvement measure type is power transmission line addition, substation addition, and phase modifying equipment addition, information such as the power transmission line addition case name (D422A), the substation addition case name (D423A), and the phase modifying equipment addition case name (D424A) is stored.

[0071] The system operation measures (D421B) are stored for each system operation measure type (D422B) corresponding to the system operation measures stored in the system operation measure candidate data D33. When the system operation measure type (D422B) is a change in power plant operation, information such as the power plant name (D424B), the pre-change output value, output upper limit value, output lower limit value, and post-change output value (D425B) of the power plant is stored for each date and time (D423B).

[0072] For example, in Fig. 10, disaster countermeasure case CC1 indicates that the system development measures are unchanged in the addition of power transmission lines, substations, and phase modifying equipment, and that the system operation measures are to change the output of power plant G1 from 500 MW to 1000 MW and the output of power plant G2 from 300 MW to 150 MW at 00:00 on DD / MM / YYYY. Disaster countermeasure case CC2 indicates that the system development measures are transmission line addition case CL1 and substation addition case CS1 stored in system development measure candidate data D32, and that the system operation measures are unchanged.

[0073] Disaster countermeasure case CC1 and disaster countermeasure case CC2 respectively show examples of cases where only system operation measures are taken as disaster countermeasures and only system development measures are taken. The system development measure type (D422A, D423A, D422A) may be other system development measures described in the explanation of the system development measure candidate database DB32. The system operation measure type (D422B) may be other system operation measures described in the explanation of the system operation measure candidate database DB33. By including the above information, each disaster countermeasure candidate can be specified. Also, the reliability economic efficiency index value for the disaster countermeasure candidate can be calculated quantitatively and with high accuracy.

[0074] The reliability economic efficiency index value calculation result database DB43 stores reliability economic efficiency index value calculation result data D43 as shown in Fig. 11. The reliability economic efficiency index value calculation result data D43 stores information such as a disaster case name (D431) corresponding to a disaster case stored in the disaster information selection result data D41, a disaster countermeasure case name (D432) corresponding to a disaster countermeasure case stored in the disaster countermeasure candidate calculation result data D42, a countermeasure cost per year (D433) required when the disaster countermeasure case is implemented, a damage cost expectation value per year (D434) when the disaster countermeasure case is implemented, and a reliability economic efficiency index value (D435) when the disaster countermeasure case is implemented.

[0075] The cost of countermeasures per year (D433) required to implement a disaster countermeasure case is calculated, for example, by dividing the costs (D326A, D325B, D326D) stored in the system improvement countermeasure candidate data D32 corresponding to the system improvement countermeasure to be implemented in the disaster countermeasure case (D432) by the number of years required to expand the facilities.

[0076] In addition, the countermeasures cost per year (D433) incurred when implementing a disaster countermeasure case is calculated, for example, by multiplying the cost (D335) stored in the system operation countermeasure candidate data D33 corresponding to the system operation countermeasure to be implemented in the disaster countermeasure case (D432) by the difference value before and after the change in power plant output.

[0077] The expected damage cost per year (D434) when the disaster countermeasure case is implemented is calculated, for example, as follows. First, system stability (synchronization stability, voltage stability, frequency stability, overload, etc.) is evaluated by a system analysis that simulates the equipment damage that occurs in the disaster case (D431) and the system maintenance measures and system operation measures implemented in the disaster countermeasure case (D432). If synchronization stability or voltage stability cannot be maintained, the cost (D352) stored in the damage cost data D35 in Fig. 8 is calculated assuming that all substations in the analysis area will experience a power outage.

[0078] On the other hand, when the frequency drops, the amount of load (substation) that is cut off is calculated by simulating the operation of an under frequency relay (UFR), and the cost (D352) stored in the damage cost data D35 in Fig. 8 is calculated assuming that the substation that is cut off in the analysis target area will suffer a power outage.When an overload occurs, the cost (D352) stored in the damage cost data D35 in Fig. 8 is calculated assuming that the substation connected downstream of the transmission line where the overload occurs will suffer a power outage.

[0079] Furthermore, the expected damage cost per year when the disaster countermeasure case is implemented is calculated by multiplying the calculated damage cost by the probability of facility damage occurring in the disaster case. Here, the method of analyzing system stability is based on, for example, Akihiko Yokoyama and Koji Ohta, "Power System Stabilization System Engineering," Institute of Electrical Engineers, 2014, etc.

[0080] The reliability economic efficiency index value (D435) during the implementation of a disaster prevention case is calculated, for example, as a weighted sum (weighted average value) of the weighting coefficients (D362) stored in the corresponding reliability economic efficiency index data D36 for the annual prevention cost (D433) and the annual damage cost expected value (D434) corresponding to the disaster case (D431) and the disaster prevention case (D432).

[0081] For example, FIG. 11 shows that the countermeasure cost as a result of implementing disaster countermeasure case CC1 for disaster case CE1 is 5 billion yen / year, the expected damage cost is 1 million yen / year, and the reliability economic efficiency index value is 150. The calculation of the countermeasure cost per year when implementing the disaster countermeasure case (D433), the expected damage cost per year when implementing the disaster countermeasure case (D434), and the reliability economic efficiency index value when implementing the disaster countermeasure case (D435) may be obtained by methods other than those described above. In addition, the countermeasure cost per year when implementing the disaster countermeasure case (D433) and the expected damage cost per year when implementing the disaster countermeasure case (D434) may be a specific number of years. In this way, the reliability economic efficiency index value for each disaster case and each disaster countermeasure case can be quantitatively calculated and compared.

[0082] Disaster countermeasure decision result data D44 is stored in the disaster countermeasure decision result database DB44 as shown in FIG. 12. The disaster countermeasure decision calculation result data D44 stores information such as a disaster countermeasure case name (D441) and a disaster case name (D442) corresponding to the disaster countermeasure case stored in the reliability economic efficiency index value calculation result data D43 in FIG. 11, and a selection result (D444) as a disaster countermeasure for the reliability economic efficiency index value (D443). For example, the disaster countermeasure case with the smallest sum of the reliability economic efficiency index values ​​(D443) for each disaster case (D442) in the disaster countermeasure case (D441) is selected. For example, FIG. 12 shows that the disaster countermeasure case CC1 was selected. The disaster countermeasure may be selected by a method other than the above.

[0083] By doing the above, it is possible to compare the calculation results of the reliability economics index value for each disaster countermeasure case and each disaster case, and it is possible to easily confirm the selection result and the selection reason. In addition, it is possible to select disaster countermeasures that can reduce countermeasure costs and damage costs, so it is possible to reduce social costs and improve power resilience at the same time.

[0084] Next, an example of the processing contents of the power system planning operation device 10 will be described with reference to Fig. 13. Fig. 13 is an example of a flowchart showing the entire processing of the power system planning operation device 10.

[0085] In the first process step S100 in FIG. 13, disaster information stored in the disaster information data D31 shown in FIG. 5 is selected using the disaster information data D31, and the selection result is output as disaster information selection result data D41.

[0086] In processing step S200, using the disaster information selection result data D41, the system development countermeasure candidate data D32 shown in FIG. 6, and the system operation countermeasure candidate data D33 shown in FIG. 7, countermeasure candidate measures related to system development and system operation for the disaster selected in processing step S100 are calculated, and output as disaster countermeasure candidate calculation result data D42.

[0087] In processing step S300, a reliability economic efficiency index value for the disaster countermeasure candidate calculated by the disaster countermeasure candidate calculation unit 22 is calculated using the disaster countermeasure candidate calculation result data D42, the system data D34, the damage cost data D35 shown in Figure 8, and the reliability economic efficiency index data D36 shown in Figure 9, and the reliability economic efficiency index value is output as reliability economic efficiency index value calculation result data D43.

[0088] In process step S400, it is determined whether or not there is a disaster countermeasure candidate that has not been selected in process step S200 for the disaster information selected in process step S100. If there is a disaster countermeasure candidate that has not been selected, the process returns to process step S200. If there is no disaster countermeasure candidate that has not been selected, the process proceeds to process step S500.

[0089] In process step S500, it is determined whether or not there is any disaster information that has not been selected in process step S100. If there is any disaster information that has not been selected, the process returns to process step S100. If there is no disaster information that has not been selected, the process proceeds to process step S600.

[0090] In process step S600, disaster countermeasures are determined using the reliability economic efficiency index value calculation result data D43, and are output as disaster countermeasure determination result data D44.

[0091] By doing the above, it is possible to select disaster prevention measures that reduce countermeasure costs and damage costs based on the reliability economics index value D43 calculated from the disaster information data D31, the system improvement measure candidate data D32, the system operation measure candidate data D33, the damage cost data D35, the system data D34, and the reliability economics index data D36, so that it is possible to achieve both reduction in social costs and improvement of power resilience.

[0092] Here, a specific example of the display contents will be described with reference to Fig. 14. Fig. 14 displays disaster cases 53 and disaster contents 54 in disaster information, and candidate disaster countermeasure cases 55 and candidate disaster countermeasure contents 56 in candidate disaster countermeasures. Users can freely select these display data items. In addition, the display in Fig. 14 also displays a system diagram 51 and a legend 52, making it easy for users to understand the location of disasters and candidate disaster countermeasures.

[0093] Figure 15 is another example of the display contents. Figure 15 displays disaster countermeasure cases 57 in disaster countermeasures, system development measures 58, and dates 59, times 510, contents 511, reliability economics index value calculation results 512, and disaster countermeasure decision results 513 in system operation measures. Users can freely select these display data items. In addition, the display in Figure 15 also displays a system diagram 51 and a legend 52, making it easy for users to understand the location of disaster countermeasures. EXAMPLES

[0094] In the second embodiment, an example of a power system planning and operation device that can achieve both reduction in adjustment capability operation costs and improvement in power resilience in a central load dispatching system (EMS) by transmitting a disaster countermeasure decision result D44 to the central load dispatching system will be described. Note that descriptions that overlap with the contents described in Figs. 1 to 15 will be omitted.

[0095] Fig. 16 is a diagram showing an overall configuration of a power system planning operation device 10 according to a second embodiment. Fig. 16 shows the power system planning operation device 10 in terms of its functional configuration. The power system planning operation device in Fig. 16 is obtained by adding a disaster countermeasure transmission unit 25 and a central load supply command system 60 to the power system planning operation device 10 in Fig. 1. In Fig. 16, the configurations with the same reference numerals as those shown in Fig. 1 already described and the parts having the same functions will not be described.

[0096] The disaster countermeasure transmission unit 25 is a function for transmitting the disaster countermeasures determined by the disaster countermeasure determination unit 24. The disaster countermeasure transmission unit 25 transmits disaster countermeasure determination result data D44 to the central load control system 60.

[0097] Broadly speaking, four databases are stored in the central load control system 60. The following describes the supply and demand plan database DB81, the procurement adjustment capability database DB82, and the operation adjustment capability decision result database DB91, excluding the disaster countermeasures decision database DB44 already described.

[0098] The supply and demand plan database DB81 stores information on power generation plans and supply and demand plans provided to general electricity transmission and distribution companies by power generation companies and retail companies. The procurement adjustment capacity database DB82 stores information on adjustment capacity procured in the supply and demand adjustment market. The operation adjustment capacity determination result database D91 stores information on the determination results of adjustment capacity to be operated.

[0099] The operation adjustment capability determination unit 71 in the central load supply command system 60 determines the adjustment capability to be operated using the disaster countermeasures decision result data D44, the supply and demand plan data D81, and the procurement adjustment capability data D82, and outputs operation adjustment capability determination result data D91.

[0100] The method of determining the adjustment capability to be operated is, for example, to predict the imbalance of power generation and load from the supply and demand plan data D81, and to determine the power plant output change amount capable of adjusting the imbalance in merit order from the adjustment capabilities stored in the procurement adjustment capability data D82 and the power plant output change amount stored in the disaster countermeasures decision result data D44. Note that the method of determining the operational adjustment capability may be a method other than the above.

[0101] By doing as described above, it is possible to suppress supply and demand and frequency fluctuations due to imbalances between power generation and demand, and to operate adjustment power in a way that can simultaneously reduce adjustment power operating costs and improve power resilience.

[0102] FIG. 17 is a diagram showing an example of the overall configuration of a power system plan operation system when the power system plan operation device 10 of FIG. 16 according to the second embodiment is applied, particularly from the viewpoint of hardware outside the power system plan operation device 10. The power system plan operation device of FIG. 17 is obtained by adding a central load dispatching system 60 to the power system plan operation device 10 of FIG. 2. In FIG. 17, the configurations with the same reference numerals as those shown in FIG. 2 and the parts having the same functions will not be described. In FIG. 17, the power system plan operation device 10 can transmit and receive data to and from the central load dispatching system 60 via a communication network 300.

[0103] In this embodiment, the power system planning operation device 10 is capable of transmitting and receiving data to and from the central load command system 60 via the external communication network 300, but the power system planning operation device 10 may be an internal device of the central load command system 60 and may transmit and receive data via the internal communication network. In addition, in this embodiment, the central load command system 60 has been taken as an example of the destination of the disaster countermeasure decision result data D44, but other systems such as a system stabilization system, a main load command system, a system load command system, and a market management system may also be used. EXAMPLES

[0104] In the third embodiment, an example of a power system planning operation device that can achieve both reduction in system planning cost and improvement in power resilience in the power system planning system 1100 by transmitting a disaster countermeasure decision result D44 to the power system planning system 1100 will be described. Note that descriptions that overlap with the contents described in Figs. 1 to 17 will be omitted.

[0105] Fig. 18 is a diagram showing an overall configuration of a power system plan operation device 10 according to a third embodiment. Fig. 18 shows the power system plan operation device 10 in terms of its functional configuration. The power system plan operation device in Fig. 18 is obtained by adding a disaster countermeasure transmission unit 25 and a power system planning system 1100 to the power system plan operation device 10 in Fig. 1. In Fig. 18, the configurations with the same reference numerals as those shown in Fig. 1 already described and the parts having the same functions will not be described.

[0106] The disaster countermeasure transmission unit 25 is a function for transmitting the disaster countermeasures determined by the disaster countermeasure determination unit 24. The disaster countermeasure transmission unit 25 transmits disaster countermeasure determination result data D44 to the power system planning system 60.

[0107] Broadly speaking, six databases are stored in the power system planning system 1100. Below, a description will be given of the facility plan determination result database DB1401, the work suspension plan database DB1402, and the operation plan determination result database DB1403, excluding the disaster countermeasures determination database DB44, the supply and demand plan database DB81, and the power system database DB34, which have already been described.

[0108] The equipment plan determination result database DB1401 stores information and the like related to the determination results of equipment plans related to system maintenance measures as described in the explanation of the system maintenance measure candidate database DB32. The work suspension plan determination result database DB1402 stores information and the like related to the determination results of work suspension plans for equipment related to the system maintenance measures. The operation plan determination result database DB1403 stores information and the like related to the determination results of operation plans for equipment related to the system maintenance measures.

[0109] The equipment plan determination unit 1201 in the system planning system 1100 uses the disaster countermeasures determination result data D44, the supply and demand plan data D81, and the system data DB34 to determine an equipment plan for system development measures as described in the explanation of the system development measures candidate database DB32, and outputs the equipment plan determination result data D1401. The method of determining the equipment plan is, for example, to obtain an equipment plan that can maintain the system stability as described in the explanation of the N-1 standard and the reliability economics index value calculation result database DB43 and has low equipment expansion costs. Note that the method of determining the equipment plan may be a method other than the above.

[0110] The work suspension plan determination unit 1202 in the system planning system 1100 uses the equipment plan determination result data D1401 to determine a work suspension plan for equipment related to the system maintenance measures, and outputs work suspension plan result data D1402. The method of determining the work suspension plan, for example, is to obtain a work suspension plan that can maintain the system stability and has low work suspension costs, as shown in the explanation of the N-1 standard and the reliability economic efficiency index value calculation result database DB43. Note that the method of determining the work suspension plan may be a method other than the above.

[0111] The operation plan determination unit 1203 in the system planning system 1100 uses the work suspension plan determination result data D1402 to determine an operation plan for equipment related to the system maintenance measures, and outputs the operation plan result data D1402. The method of determining the operation plan is, for example, to obtain an operation plan that can maintain the system stability and has low operation costs as described in the N-1 standard and the reliability economics index value calculation result database DB43. Note that the method of determining the operation plan may be a method other than the above.

[0112] By doing the above, it is possible to create a grid plan that not only maintains the N-1 standard and grid stability, but also reduces grid development costs and improves power resilience.

[0113] FIG. 19 is a diagram showing an example of the overall configuration of a power system plan operation system when the power system plan operation device 10 of FIG. 18 according to the third embodiment is applied, particularly from the viewpoint of hardware outside the power system plan operation device 10. The power system plan operation device of FIG. 19 is obtained by adding a system planning system 1100 to the power system plan operation device 10 of FIG. 2. In FIG. 19, the configurations with the same reference numerals as those shown in FIG. 2 and the parts having the same functions will not be described. In FIG. 19, the power system plan operation device 10 can transmit and receive data to and from the system planning system 1100 via a communication network 300.

[0114] In this embodiment, the power system planning operation device 10 is capable of transmitting and receiving data to and from the system planning system 1100 via the external communication network 300, but the power system planning operation device 10 may be an internal device of the system planning system 1100 and may transmit and receive data via the internal communication network. Also, in this embodiment, the system planning system 1100 has been taken as an example of the destination of the disaster countermeasure decision result data D44, but other systems such as a system stabilization system, a core power supply command system, a system power supply command system, and a market management system may also be used. [Explanation of symbols]

[0115] 10: Power system planning and operation device 101: CPU of power system planning and operation device 102: Memory of power system planning and operation device 103: Input section of power system planning and operation device 104: Communication unit of power system planning and operation device 105: Display unit of power system planning and operation device 91: Bus line for power system planning and operation equipment 300: Communication Network 20: Disaster Prevention Calculation Department 21: Disaster Information Selection Section 22: Disaster prevention candidate calculation section 23: Reliability economics index value calculation unit 24: Disaster Prevention Decision-Making Department 25: Disaster Prevention Transmission Department 50:Display section 60: Central power dispatching system 71:Operation Coordination Determination Department 1100: System planning system 1201: Facilities Planning and Decision Department 1202: Work stoppage planning department 1203: Operational Planning Division D20: Disaster prevention calculation program data DB20: Disaster prevention calculation program database D30: Disaster prevention calculation input data DB30: Disaster prevention calculation input database D31: Disaster information data DB31: Disaster Information Database D32: Data on potential grid development measures DB32: Database of potential grid development measures D33: Data on potential grid operation measures DB33: Database of potential grid operation measures D34: System data DB34: Genealogy database D35: Damage cost data DB35: Damage Cost Database D36: Reliability economics index data DB36: Reliability and economic performance index database D40: Disaster prevention calculation results data DB40: Disaster prevention calculation results database D41: Disaster information selection result data DB41: Disaster information selection results database D42: Disaster prevention measures candidate calculation result data DB42: Disaster prevention measures candidate calculation result database D43: Reliability economics index value calculation result data DB43: Reliability economics index value calculation results database D44: Disaster prevention decision result data DB44: Disaster prevention decision results database D81: Supply and demand planning data DB81: Supply and demand planning database D82: Procurement Adjustment Ability Data DB82: Procurement Adjustment Capability Database D91: Operational Adjustment Capacity Decision Result Data DB91: Operational Adjustment Capacity Decision Result Database D1401: Facility planning decision result data DB1401: Facility planning decision result database D1402: Work stoppage plan decision result data DB1402: Work stoppage plan decision result database D1403: Operational plan decision result data DB1403: Operational plan decision result data P21: Disaster Information Selection Program P22: Disaster prevention countermeasures candidate calculation program P23: Reliability economics index value calculation program P24: Disaster prevention decision-making program P50: Display program

Claims

1. A power system planning and operation device for disaster occurrence, The power system planning and operation device includes a disaster information selection unit that selects disaster information data of a disaster type to be dealt with from among disaster information data for each disaster type, and sets the selected disaster information data as disaster information selection result data; a disaster countermeasure candidate calculation unit that calculates disaster countermeasure candidates using the disaster information selection result data, system maintenance countermeasure candidate data which is information on preparing system equipment in preparation for a disaster, and system operation countermeasure candidate data which is information on determining system operation countermeasures in preparation for a disaster, and generates disaster countermeasure candidate calculation result data; a reliability economics index value calculation unit that calculates a reliability economics index value for the disaster countermeasure candidate calculation result data using the disaster countermeasure candidate calculation result data, system data which is information regarding the configuration of the power system, damage cost data which is information regarding the amount of damage in the event of an assumed disaster type, and reliability economics index data which is information that indexes the relationship between reliability and economics, and sets the reliability economics index value data; A power system planning and operation device comprising a disaster countermeasure decision unit that decides disaster countermeasures using the reliability economic efficiency index value data and sets the disaster countermeasure decision result data.

2. The power system planning and operation device according to claim 1, A power system planning and operation device comprising: a display unit that displays at least one of the disaster information selection result data, the disaster countermeasure candidate calculation result data, the reliability economic efficiency index value data, and the disaster countermeasure decision result data.

3. The power system planning and operation device according to claim 1 or 2, The power system planning and operation device is characterized in that the disaster information data includes damaged equipment, damage details, and occurrence probability for one or more disasters of earthquake, typhoon, tsunami, fire, lightning strike, and snowfall.

4. The power system planning and operation device according to any one of claims 1 to 3, The power system planning and operation device, characterized in that the system improvement measure candidate data includes one or more of the system improvement measures and their expansion costs, including the addition of a transmission line, an addition of a substation, an addition of a phase modifying equipment, an addition of a DC equipment, an addition of a synchronous phase modifying machine, an addition of a static var compensator, an addition of a self-commutated SVC, an addition of an SVG, an addition of a STATCOM, and an addition of a phase shifter.

5. The power system planning and operation device according to any one of claims 1 to 4, The power system planning and operation device, characterized in that the system operation measure candidate data includes one or more of the system operation measures and their operating costs, including a power plant output change, a power plant start / stop, a substation tap change, a phase modifying device opening / closing, and a transmission line opening / closing.

6. The power system planning and operation device according to any one of claims 1 to 5, The power system planning and operation device, wherein the damage cost data includes at least one of a power outage cost for each substation, a power outage cost for each consumer, and a power outage cost for each consumer type.

7. The power system planning and operation device according to any one of claims 1 to 6, The power system planning and operation device is characterized in that the reliability economic efficiency index data includes countermeasure costs, expected damage costs, and weighting coefficients thereof.

8. The power system planning and operation device according to any one of claims 4 to 7, The power system planning and operation device, wherein the disaster countermeasure candidate calculation result data includes at least one of an expansion content for the system improvement countermeasure candidate data and an operation change content for the system operation countermeasure.

9. The power system planning and operation device according to claim 8, The reliability economics index value data includes the disaster information data, calculation results of countermeasure costs for the disaster countermeasure candidates, calculation results of damage cost expected values, and calculation results of the reliability economics index value data.

10. The power system planning and operation device according to claim 9, The power system planning and operation device, wherein the disaster countermeasure decision result data includes a calculation result of the reliability economic efficiency index value for the disaster countermeasure candidate and the disaster information data, and a selection result as a disaster countermeasure.

11. 11. A power system planning and operation system, comprising: a power system planning and operation device according to claim 1, linked to one or more of a central load dispatching system, a power system planning system, a power system stabilization system, a main load dispatching system, a power system load dispatching system, and a market management system; and the disaster countermeasures decision result data obtained by the power system planning and operation device is transmitted to the linked systems.

12. The power system planning and operation system according to claim 11, The power system planning and operation system is characterized in that the power system planning and operation device is an internal device of any one of a central load dispatching system, a power system planning system, a power system stabilization system, a main load dispatching system, a power system load dispatching system, and a market management system.

13. A method for planning and operating a power system in response to a disaster, comprising: The power system planning and operation method includes selecting disaster information data of a disaster type to be dealt with from the disaster information data for each disaster type, and setting the selected disaster information data as disaster information selection result data; Calculate disaster countermeasure candidates using the disaster information selection result data, system development countermeasure candidate data which is information on developing system facilities in preparation for disasters, and system operation countermeasure candidate data which is information on determining system operation countermeasures in preparation for disasters, and set the calculated disaster countermeasure candidate data as disaster countermeasure candidate calculation result data; Calculate a reliability economics index value for the disaster countermeasure candidate calculation result using the disaster countermeasure candidate calculation result data, system data which is information regarding the configuration of the power system, damage cost data which is information regarding the amount of damage at the time of the assumed disaster type, and reliability economics index data which is information that indexes the relationship between reliability and economics, and obtain the reliability economics index value data; A power system planning and operation method, comprising determining disaster countermeasures using the reliability economics index value data.

14. The power system planning and operation method according to claim 13, The power system planning and operation method, wherein the disaster information data includes damaged equipment, damage details, and occurrence probability for one or more of the following disasters: earthquake, typhoon, tsunami, fire, lightning strike, and snowfall.

15. The power system planning and operation method according to claim 13 or 14, The power system planning and operation method, characterized in that the data on candidate system improvement measures includes one or more of the system improvement measures and their expansion costs, including the addition of a transmission line, an addition of a substation, an addition of a phase modifying equipment, an addition of a DC equipment, an addition of a synchronous phase modifying machine, an addition of a static var compensator, an addition of a self-commutated SVC, an addition of an SVG, an addition of a STATCOM, and an addition of a phase shifter.

16. The power system planning and operation method according to any one of claims 13 to 15, The power system planning and operation method, characterized in that the data on candidate system operation measures includes one or more of the system operation measures and their operating costs, including a change in power plant output, a start / stop of a power plant, a change in substation taps, an opening / closing of a phase modifying device, and an opening / closing of a transmission line.

17. The power system planning and operation method according to any one of claims 13 to 16, The power system planning and operation method, wherein the damage cost data includes at least one of a power outage cost for each substation, a power outage cost for each consumer, and a power outage cost for each consumer type.

18. A power system planning and operation method according to any one of claims 13 to 17, The power system planning and operation method is characterized in that the reliability economic efficiency index data includes countermeasure costs, expected damage costs, and weighting coefficients thereof.

19. The power system planning and operation method according to any one of claims 16 to 18, The power system planning and operation method, wherein the disaster countermeasure candidate calculation result data includes at least one of an expansion content for the system maintenance countermeasure candidate data and an operation change content for the system operation countermeasure candidate data.

20. The power system planning and operation method according to claim 19, The power system planning and operation method, wherein the reliability economics index value data includes a calculation result of a countermeasure cost for the disaster information data and the disaster countermeasure candidate calculation result data, a calculation result of a damage cost expectation value, and a calculation result of the reliability economics index value.

21. The power system planning and operation method according to claim 20, The power system planning and operation method includes the calculation result data of the disaster countermeasure candidate, the calculation result of the reliability economic efficiency index value for the disaster information data, and a selection result as a disaster countermeasure.

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