JP7107811B2 - SYSTEM PLANNING SUPPORT SYSTEM AND METHOD - Google Patents

Description

The present invention relates to a power system planning support system and method.

There is a concern that the reliability of the electric power system will decline due to the aging deterioration of the system equipment that was introduced in large quantities during the period of high economic growth. On the other hand, due to the recent slump in demand for electricity, the income from transmission and distribution charges for general power transmission and distribution companies is decreasing. For general power transmission and distribution companies, it is a challenge to improve the efficiency of capital investment while ensuring the reliability of the power system, and it is required to formulate a system plan that achieves both reliability and economic efficiency.

In Patent Document 1, the maintenance or renewal of system equipment is targeted for planning, and the risk of disruption of power supply due to failure of system equipment is reduced, and the maintenance cost or renewal cost of system equipment within a predetermined period is minimized. Techniques for developing a grid plan are disclosed.

JP 2010-027044 A

According to the conventional technology, it is possible to formulate a plan for the maintenance or renewal of system equipment under the premise that the system configuration will not change. Instead, it is necessary to develop a system plan that includes measures that involve changes to the system configuration. In other words, there is a need to formulate a system plan that includes measures that involve changes in the system configuration, such as the removal or consolidation of system equipment for cost reduction, and the establishment or enhancement of system equipment for improving profitability.

In order to formulate a system plan that includes measures that involve changes in the system configuration, it is necessary to evaluate the system configuration when each measure is implemented. However, when all possible countermeasures are combined in a round-robin manner, the number of system configurations increases exponentially according to the number of countermeasures, resulting in an explosion of computational complexity. Under the situation where a huge number of power system plans are assumed as candidates due to combinatorial explosion, it is necessary to reduce the amount of computation and comprehensively evaluate the cost and effect of each power system plan candidate.

The present invention has been made in view of the above problems, and its object is to provide a power system planning support system and method that enable comprehensive evaluation of the execution of power system plan candidates related to changes in the configuration of the power system. to do.

In order to solve the above problems, a power system planning support system according to the present invention is a power system planning support system that supports the formulation of a power system plan, and includes countermeasure information including the contents and costs of measures that can be implemented in the power system plan. Based on the plan candidate generation unit that generates a power system plan candidate that satisfies a predetermined constraint in each time section within a preset planning period, and based on the basic facility information and the power system plan candidate that indicate the current power system configuration a computing unit that generates updated equipment basic information indicating the configuration of the power system when the measures included in the system plan candidate are executed for each time slice for each system plan candidate; and an updated equipment generated for each time slice and an evaluation unit that calculates an evaluation value based on a predetermined index for the basic information.

According to the present invention, a system plan candidate that satisfies a predetermined constraint is generated in each time section within a planning period, and a system plan candidate is generated based on the basic equipment information indicating the configuration of the current power system and the system plan candidate. can be generated for each time section for each system plan candidate, and the updated facility basic information generated for each time section can be evaluated based on a predetermined index.

1 is an overall configuration diagram of a power system planning support system; FIG. It is a block diagram which shows the flow of the process performed by a system planning apparatus. An example of countermeasure information is shown. An example of a plan candidate is shown. An example of equipment basic information is shown. An example of the system configuration represented by the facility basic information is shown. An example of update equipment basic information is shown. An example of a system configuration represented by updated facility basic information is shown. An example of evaluation value information is shown. It is a flowchart which shows the process of a plan candidate production|generation part. 4 is a flow chart showing processing of a computing unit; It is a flowchart which shows the process of an evaluation part. It is explanatory drawing which shows the synergistic effect between measures. It is explanatory drawing which shows the presence or absence of the synergistic effect between measures. FIG. 10 is an explanatory diagram showing an overview of groups formed based on the presence or absence of synergistic effects between countermeasures;

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below based on the drawings. In the present embodiment, as will be described in detail below, the formulation of a power system plan that achieves both the reliability of the power system and the economy of general power transmission and distribution companies is supported.

In this embodiment, system plan candidates that satisfy predetermined constraints in all time sections within the planning period are generated based on countermeasure information for newly installing, enhancing, or removing system facilities in the power system. Then, in this embodiment, updated facility basic information is calculated when each system plan candidate is implemented, and the updated facility basic information is evaluated based on a predetermined index. As a result, it is possible to realize the evaluation of all system plans related to the configuration change of the power system with a small number of calculations. Therefore, according to the power system planning support system of the present embodiment, it is possible to comprehensively and efficiently evaluate all power system plans related to configuration changes of the power system, and to exclude arbitrary judgments. , the reliability of system planning is improved.

A power system planning support system, which is one aspect of the present embodiment, satisfies predetermined constraints at each time section within the planning period based on countermeasure information including implementation details and costs of countermeasures that may be included in the power system plan. Plan candidate generating means 22 for generating system plan candidates, equipment basic information 330 (see FIG. 5) including equipment specifications and connection points of system equipment constituting the current power system, and generated by the plan candidate generating means 22 system plan candidate 320 (see FIG. 4), system equipment that constitutes the power system after executing the measures included in the system plan candidate 320 generated by the plan candidate generation means 22 for the current power system A calculation means 23 for generating updated equipment basic information 340 (see FIG. 7) including equipment specifications and connection points for each system plan candidate 320 for each time slice, and the calculation means 23 for each time slice for each system plan candidate 320 and an evaluation means 24 for calculating an evaluation value 350 (see FIG. 9) of a predetermined index for the updated equipment basic information 340 generated in the above.

According to the present embodiment configured in this manner, as described above, changes in the system configuration such as removal/consolidation of system equipment for cost reduction, new installation/enhancement of system equipment for strengthening profitability, etc. Even when a huge number of power system plans are assumed as candidates due to an explosion of combinations of countermeasures, the amount of computation can be suppressed, and the costs and effects of each power system plan candidate can be comprehensively evaluated. .

A first embodiment will be described with reference to FIGS. 1 to 15. FIG. The following descriptions show specific examples of the content of the present invention, and the present invention is not limited to the following descriptions, and various modifications and Modification is possible.

(1) System configuration

FIG. 1 shows the overall configuration of a power system planning support system according to this embodiment. The system planning support system is configured by, for example, connecting a system planning device 1 , a facility information management device 2 and a plan information management device 3 via a communication network 4 .

In the figure, the word "department" is omitted. For example, the calculation unit 23 is indicated as "calculation 23", and the evaluation unit 24 is indicated as "evaluation 24". Furthermore, in the drawings, the term “storage unit” may be omitted. For example, the countermeasure information storage unit 31 is indicated as "countermeasure information 31", and the plan candidate storage unit 32 is indicated as "plan candidate 32".

The system planning device 1, which forms the core of the system planning support system, can be realized using, for example, one or more computers. The system planning device 1 is configured by connecting a CPU 10, a memory 20, a storage section 30, an input section 40, an output section 50, and a communication section 60 via an internal bus 70, for example. The system planning device 1 may have circuits or functions not shown.

The CPU 10 is a processor that controls the operation of the system planning device 1 . The memory 20 is mainly used to temporarily store various computer programs and data. A facility information acquisition unit 21, a plan candidate generation unit 22, a calculation unit 23, an evaluation unit 24, and a plan information registration unit 25, which will be described later, are stored and held in the memory 20. FIG.

The storage unit 30 includes, for example, a hard disk or flash memory, and is used to store computer programs and data for a long period of time. A countermeasure information storage unit 31, a plan candidate storage unit 32, an equipment basic information storage unit 33, an updated equipment basic information storage unit 34, and an evaluation value information storage unit 35, which will be described later, are stored and held in the storage unit 30. FIG.

A computer program for realizing each function 21 to 25 and part or all of the data 31 to 35 can be fixed on the recording medium 5 and transferred from the recording medium 5 to the system planning apparatus 1 .

The input unit 40 is a device for a user (plan creator) of the system planning device 1 to input information to the system planning device 1 . The input unit 40 includes, for example, a keyboard, a pointing device such as a mouse or a touch panel, a microphone, a voice recognition device, and the like. A user who formulates a system plan uses the system planning device 1 to input necessary information to the system planning device 1 from the input unit 40 when formulating a system plan.

The output unit 50 is a device for providing information from the system planning device 1 to the user. The output unit 50 includes, for example, a display, a printer, a speaker, a speech synthesizer, and the like. A user who formulates a system plan can display the system plan and the evaluation values generated by the system planning device 1 on the output unit 50 for confirmation.

Either or both of the input unit 40 and the output unit 50 may be realized by a VR (Virtual Reality) device, an AR (Augmented Reality) device, or an MR (Mixed reality) device. An operation terminal including the input unit 40 and the output unit 50 may be prepared separately, and the operation terminal and the system planning device 1 may be connected so as to be communicable. The operating terminal may be configured, for example, as a personal computer, a tablet terminal, or a mobile information terminal (including a so-called smart phone).

The communication unit 60 is connected to the facility information management device 2 and the plan information management device 3 via the communication network 4, and executes protocol control during communication. The system planning device 1 communicates with each of the management devices 2 and 3 via the communication unit 60 and the communication network 4 .

The facility information management device 2 is a computer that accumulates and manages information such as facility specifications and connection points for individual system facilities that make up the current power system. The plan information management device 3 is a computer that accumulates and manages system plans and evaluation values generated by the system planning device 1 .

(2) Flow of processing executed by system planning device

The processing executed by the system planning device 1 will be described with reference to FIG. The facility information acquisition unit 21 acquires basic facility information from the facility information management device 2 . The facility basic information includes facility specifications and connection points of system facilities that constitute the current power system. The equipment information acquisition unit 21 stores the acquired basic equipment information in the basic equipment information storage unit 33 .

The plan candidate generating unit 22 acquires countermeasure information from the countermeasure information storage unit 31 , generates plan candidates based on the acquired countermeasure information, and stores the generated plan candidates in the plan candidate storage unit 32 . The countermeasure information includes implementation details and costs of countermeasures that may be included in the system plan. A plan candidate is a candidate for a system plan.

The calculation unit 23 acquires the plan candidate from the plan candidate storage unit 32, acquires the facility basic information from the facility basic information storage unit 33, and updates the updated facility basic information based on the acquired plan candidate and facility basic information. Generate. The updated equipment basic information includes equipment specifications and connection points of the system equipment that constitutes the power system when the measures included in the plan candidate are executed. The calculation unit 23 generates updated equipment basic information for each time slice for each plan candidate, and stores the generated updated equipment basic information in the updated equipment basic information storage unit 34 .

The evaluation unit 24 acquires updated equipment basic information from the updated equipment basic information storage unit 34, generates evaluation value information based on the acquired updated equipment basic information, and stores the generated evaluation value information in the evaluation value information storage unit. 35. The evaluation value information is information including an evaluation value calculated based on a predetermined index for each piece of updated equipment basic information.

The plan information registration unit 25 acquires plan candidates from the plan candidate storage unit 32, acquires evaluation value information from the evaluation value information storage unit 35, and transmits the acquired plan candidates and evaluation value information to the plan information management device 3. Send.

(3) Details of each database

(3-1) Countermeasure information storage unit

FIG. 3 shows an example of countermeasure information 310 stored in the countermeasure information storage unit 31. As shown in FIG. The countermeasure information 310 can include installation information 311, enhancement information 312, and removal information 313, for example.

The new installation information 311 is a table used for managing information on countermeasures for installing new system equipment. The new information 311 has an entry for each countermeasure. One measure entry includes, for example, a measure ID column 3111, an equipment type column 3112, a connection bus 1 column 3113, a connection bus 2 column 3114, a cost column 3115, and a facility specification column 3116.

The countermeasure ID column 3111 stores countermeasure IDs that are identification numbers of countermeasures. The equipment type column 3112 stores the equipment type of the system equipment to be newly installed. The connection bus 1 column 3113 and the connection bus 2 column 3114 store bus IDs to which system equipment to be newly installed is connected. The cost column 3115 stores the cost required for installing new system equipment. The equipment specification column 3116 stores the equipment specifications of the system equipment to be newly installed. For example, for a measure with a measure ID of “A1”, the facility type is “LN”, the connection bus 1 is “A”, the connection bus 2 is “C”, the cost is “100k¥”, and the facility specification is “equipment capacity: 20".

The enhancement information 312 is a table used for managing information on measures to enhance system facilities. The enhancement information 312 has an entry for each countermeasure. One measure entry includes, for example, a measure ID column 3121, an equipment ID column 3122, a cost column 3123, and an equipment specification column 3124. The countermeasure ID column 3121 stores countermeasure IDs that are identification numbers of countermeasures. The facility ID column 3122 stores the facility ID, which is the identification number of the system facility to be reinforced. The cost column 3123 stores the cost required to reinforce the system equipment. The equipment specification column 3124 stores the equipment specifications of the system equipment to be reinforced. For example, for a measure with a measure ID of "B1", it is indicated that the facility ID is "LN1", the cost is "100 k¥", and the facility specification is "equipment capacity: 10".

The retirement information 313 is a table used for managing information on measures to remove system equipment. The removal information 313 has an entry for each countermeasure. An entry for one measure includes, for example, a measure ID column 3131, an equipment ID column 3132, and a cost column 3133. The countermeasure ID column 3131 stores countermeasure IDs that are identification numbers of countermeasures. The facility ID column 3132 stores the facility ID, which is the identification number of the system facility to be removed. The cost column 3133 stores the cost required for removing the system equipment. For example, for a measure with a measure ID of "C1", it is indicated that the facility ID is "SC1" and the cost is "50 k¥".

Note that the configuration of the countermeasure information 310 is not limited to the example shown in FIG. The countermeasure information 310 may include, for example, countermeasure information for repairing system equipment, countermeasure information for updating system equipment, and the like.

(3-2) Plan candidate storage unit

FIG. 4 is an example of a plan candidate 320 stored in the plan candidate storage unit 32. As shown in FIG. The plan candidate 320 is a table used to manage a set of countermeasures for changing the configuration of the power system, that is, plan candidates. Countermeasures include new construction, reinforcement, and removal of system facilities.

Plan candidate 320 has an entry for each plan. One plan entry includes, for example, a plan ID column 3201, a time slice column 3202, a countermeasure ID column 3203, and a cost column 3204. The plan ID column 3201 stores plan IDs that are identification numbers of plans. The time slice column 3202 stores a time slice indicating a specific time point within the planning period. The countermeasure ID column 3203 stores a countermeasure ID that is an identification number of a countermeasure to be executed in a time section of the planning period. The cost column 3204 stores the cost required for the measures included in the plan. For example, for a plan with a plan ID of "P1", a plan with a time slice of "2019" has a countermeasure ID of "{A1, C1}" and a cost of "150k¥".

(3-3) Equipment basic information storage unit

FIG. 5 shows an example of the basic equipment information stored in the basic equipment information storage unit 33. As shown in FIG. FIG. 5 shows basic facility information 330 as an example.

The facility basic information 330 is a table used to manage information such as connection busbars and facility specifications of system facilities connected to the current power system. The facility basic information 330 has an entry for each system facility. An entry for one system facility includes, for example, a facility ID column 3301, a connection bus 1 column 3302, a connection bus 2 column 3303, and a facility specification column 3304.

The facility ID column 3301 stores facility IDs that are identification numbers of system facilities. The connecting bus line 1 column 3302 and the connecting bus line 2 column 3303 store bus line IDs to which system equipment is connected. The equipment specification column 3304 stores the equipment specifications of the system equipment. For example, for system equipment with equipment ID "G1", it is shown that connection bus 1 is "A", connection bus 2 is "none", and equipment specification is "equipment capacity: 20".

FIG. 6 shows the system configuration indicated by the facility basic information 330 described in FIG. In the basic equipment information 330, the system configuration is uniquely determined by defining the bus line to which each system equipment is connected.

(3-4) Updated equipment basic information storage unit

FIG. 7 is an example of updated equipment basic information 340 stored in the updated equipment basic information storage unit 34 .

The updated equipment basic information 340 is used to manage information such as the connection bus and equipment specifications of system equipment connected to the power system when measures such as new installation, reinforcement, and removal of system equipment are executed. is a table. The updated equipment basic information 340 has an entry for each system equipment. An entry for one system equipment includes, for example, an equipment ID column 3401, a connecting bus 1 column 3402, a connecting bus 2 column 3403, and an equipment specification column 3404.

The facility ID column 3401 stores facility IDs that are identification numbers of system facilities. The connection bus line 1 column 3402 and the connection bus line 2 column 3403 store the connection bus line IDs of system equipment. The equipment specification column 3404 stores the equipment specifications of the system equipment. For example, for system equipment with equipment ID "G1", it is shown that connection bus 1 is "A", connection bus 2 is "none", and equipment specification is "equipment capacity: 20".

FIG. 8 shows the system configuration indicated by the updated facility basic information 340 described in FIG. In the updated equipment basic information 340, the system configuration is uniquely determined by defining the bus line to which each system equipment is connected.

(3-5) Evaluation value information storage unit

FIG. 9 shows an example of evaluation value information 350 stored in the evaluation value information storage unit 35. As shown in FIG. The evaluation value information 350 is a table used for managing information such as the costs required to implement countermeasures for each system plan and the effects obtained. The evaluation value information 350 has an entry for each system plan. One system plan entry includes, for example, a plan ID column 3501, a time cross section column 3502, and an evaluation value column 3503.

The plan ID column 3501 stores plan IDs that are identification numbers of system plans. The time slice column 3502 stores a time slice indicating a specific time point within the planning period. The evaluation value column 3503 stores various evaluation values for plan candidates. Evaluation values include, for example, costs required for countermeasures, power transmission losses, and the total output of renewable energy. For example, for a plan candidate with a plan ID of "P1", the evaluation value for the time section of "2019" is "1500 k¥" for the countermeasure cost, "100" for the transmission loss, and "50" for the total renewable energy output. is shown.

(4) Details of each processing flow

10 to 15, processing executed in each of the plan candidate generation unit 22, the calculation unit 23, and the evaluation unit 24 of the system planning device 1 will be described. Each process is realized by executing a computer program stored in the memory 20 by the CPU 10. FIG.

(4-1) Plan candidate generator

As shown in the flowchart of FIG. 10, the plan candidate generation unit 22 generates plan candidates 320 based on the countermeasure information and the constraint information. A specific example will be described later.

The plan candidate generation unit 22 generates a set of countermeasures that satisfy predetermined constraints (S101). Predetermined restrictions are, for example, the upper limit of the cost per single time section, the upper limit of the number of newly installed system facilities, and the like. In step S101, any one constraint is selected as a predetermined constraint from a plurality of preset constraints, and one or a plurality of sets of countermeasures satisfying the predetermined constraint are generated from a group of countermeasures prepared in advance. do.

The plan candidate generation unit 22 selects the initial value of the series of the target set (S102). The plan candidate generating unit 22 selects one countermeasure set sequence (S103).

The plan candidate generation unit 22 selects all the countermeasure sets having an exclusive relationship with the countermeasure set series selected in step S103, and adds each selected countermeasure set to the countermeasure set series (S104). The plan candidate generation unit 22 determines whether or not the process of step S104 has been completed for all the countermeasure set series (S105), proceeds to step S106 if a positive result is obtained, and returns to step S103 if a negative result is obtained. .

If a negative result is obtained in step S105 (S105: NO), the plan candidate generation unit 22 sequentially switches the countermeasure set sequence selected in step S103 to another unprocessed countermeasure set sequence, while performing steps S103 and S104. Repeat process.

The plan candidate generation unit 22 determines whether or not the processes of steps S103 to S105 have been completed for all time slices (S106). If a positive result is obtained, the process proceeds to step S107, and if a negative result is obtained, the process proceeds to step S103. return.

If a negative result is obtained in step S106 (S106: NO), the plan candidate generation unit 22 sequentially switches the countermeasure set sequence selected in step S103 to another unprocessed countermeasure set sequence, while performing steps S103 to S105. Repeat process.

The plan candidate generation unit 22 determines whether or not the processes of steps S102 to S106 have been executed for all the countermeasure sets (S107). back to

An example of the processing of the plan candidate generation unit 22 will be described using the installation information 311, the enhancement information 312, and the retirement information 313 described with reference to FIG. 3 as an example. Here, it is assumed that a power system plan from 2019 to 2023 is generated. As a predetermined constraint, the interval between time slices is one year, and the upper limit of the cost per single time slice is 200,000 yen (200k¥). A given constraint may be abbreviated as a constraint below.

In step S101, the plan candidate generation unit 22 generates a set of countermeasures that satisfy the constraints based on the new installation information 311, the reinforcement information 312, and the retirement information 313 shown in FIG. Here, {A1}, {A2}, {A3}, {A4}, {B1}, {B2}, {B3}, {C1}, {C2}, {C3}, {A1, B1}, {A1, C1}, {A2, C1}, {B1, C1}, {B2, C1}, {C1, C2}, { } total 17 patterns is generated.

In step S102, the plan candidate generating unit 22 selects one countermeasure set as an initial value from the 17 countermeasure sets generated in step S101. Here, {A1} is selected as an example. The plan candidate generating unit 22 selects one countermeasure set sequence in step S103. Here, {A1} is selected because there is only one countermeasure set series, {A1}.

In step S104, the plan candidate generating unit 22 selects all the countermeasure sets having an exclusive relationship with the countermeasure set series {A1} selected in step S103, and adds each selected countermeasure to the series.

Of the 17 countermeasure sets generated in step S101, the countermeasure sets {A2}, {A3}, {A4}, {B1}, {B2}, {B3} that have an exclusive relationship with the countermeasure set sequence {A1} }, {C1}, {C2}, {C3}, {A2, C1}, {B1, C1}, {B2, C1}, {C1, C2}, { } for a total of 14 patterns. By adding these countermeasure set sequences to the countermeasure set sequence {A1}, a total of 14 countermeasure set sequences are generated. In step S105, the plan candidate generation unit 22 determines whether or not the process of step S104 has been completed for all the countermeasure set sequences.

Here, since there is only one countermeasure set sequence {A1}, a positive result is obtained and the process proceeds to step S106. In step S106, the plan candidate generation unit 22 determines whether or not the processing of steps S103 to S105 has been completed for all time slices. Here, since only the processing for "2019" has been completed, a negative result is obtained, and the process returns to step S103. By repeating the above process, the plan candidate generating unit 22 generates plan candidates that satisfy predetermined constraints within the planning period.

(4-2) Operation unit

As shown in the flowchart of FIG. 11, the calculation unit 23 generates updated facility basic information 340 based on the facility basic information and the plan candidates.

The calculation unit 23 selects one system plan from among the plan candidates 320 stored in the plan candidate storage unit 32 (S201). The calculation unit 23 selects one time section of the system plan selected in step S201 (S202). The calculation unit 23 initializes the updated equipment basic information 340 when the measures for the time slice selected in step S202 are executed for the system plan selected in step S201 (S203).

The calculation unit 23 selects one countermeasure from the countermeasures included in the time slice selected in step S202 for the power system plan selected in step S201 (S204). The calculation unit 23 determines whether or not the countermeasure type is "removal" for the countermeasure selected in step S204 (S205). If a positive result is obtained, the process proceeds to step S206. move on.

When a positive result is obtained in step S205 (S205: YES), the calculation unit 23 deletes the information on the system equipment to be removed from the updated equipment basic information 340 (S206). If a negative result is obtained in step S205 (S205: NO), the calculation unit 23 adds information on the system equipment to be newly installed or reinforced to the updated equipment basic information 340 (S207).

The calculation unit 23 determines whether or not the processing of steps S205 to S207 has been completed for all countermeasures (S208), proceeds to step S209 if a positive result is obtained, and returns to step S204 if a negative result is obtained. If a negative result is obtained in step S208 (S208: NO), the calculation unit 23 repeats the processing of steps S205 to S207 while sequentially switching the countermeasure selected in step S204 to other unprocessed countermeasures.

The calculation unit 23 determines whether or not the processing of steps S203 to S208 has been completed for all time slices (S209), and proceeds to step S210 if a positive result is obtained, and returns to step S202 if a negative result is obtained. If a negative result is obtained in step S209 (S209: NO), the calculation unit 23 repeats the processing of steps S203 to S208 while sequentially switching the time slice selected in step S202 to other unprocessed time slices.

The calculation unit 23 determines whether or not the processes of steps S202 to S209 have been executed for all system plans (S210), ends this process if a positive result is obtained, and returns to step S201 if a negative result is obtained. . If a negative result is obtained in step S210 (S210: NO), the calculation unit 23 repeats the processing of steps S202 to S209 while sequentially switching the system plan selected in step S201 to another unprocessed system plan. .

Here, an example in which the process of FIG. 11 is executed using the plan candidate 320 shown in FIG. 4 and the facility basic information 330 shown in FIG. 5 will be described.

The calculation unit 23 selects one system plan from the plan candidates 320 shown in FIG. 4 in step S201. Here, the system plan with the plan ID of "P1" is selected.

The calculation unit 23 selects one time section in step S202. In this example, "2019" is selected. In step S203, the calculation unit 23 calculates the contents of the updated equipment basic information 340 generated when the time section measure selected in step S202 among the measures of the system plan selected in step S201 is executed. initialize. Here, the basic equipment information 330 of the time slice immediately before the time slice selected in step S202 is used as the initial value of the updated basic equipment information 340 .

In step S204, the calculation unit 23 selects one measure to be executed in the time section selected in step S202 for the power system plan selected in step S201. Here, it is assumed that the countermeasure with the countermeasure ID "A1" is selected.

The calculation unit 23 determines in step S205 whether or not the type of countermeasure selected in step S204 is "removal". Here, since the type of countermeasure with the countermeasure ID "A1" is "new installation", a negative result is obtained (S205: NO), and the process proceeds to step S207.

The calculation unit 23 adds the information of the system equipment to be newly installed or reinforced to the updated equipment basic information 340 in step S207. Here, the information on the newly installed system equipment with the countermeasure ID "A1" is added to the updated equipment basic information 340 initialized in step S202.

In step S208, the calculation unit 23 determines whether or not the processing of steps S205 to S207 has been completed for all countermeasures. Here, since the countermeasure for the countermeasure ID "C1" has not been completed, a negative result is obtained (S208: NO), and the process returns to step S204. By repeating the above process, the calculation unit 23 generates updated equipment basic information 340 for each time slice for each system plan of each plan candidate 320 .

(4-3) Evaluation section

As shown in the flowchart of FIG. 12, the evaluation unit 24 generates evaluation value information 350 based on updated equipment basic information 340 and evaluation index information.

The evaluation unit 24 selects one evaluation index from the evaluation index information (S301). The evaluation unit 24 selects one time slice (S302). The evaluation unit 24 calculates a synergy effect between individual measures indicated in the measure information 310 for the evaluation index selected in step S301 (S303). Here, the synergistic effect (synergistic effect) is, for example, the difference between the effect obtained when a plurality of countermeasures are executed independently and the effect obtained when the plurality of countermeasures are executed simultaneously.

Based on the synergy effect calculated in step S303, the evaluation unit 24 determines whether or not there is a synergy effect between individual measures, and groups the measures determined to have a synergy effect (S304). For example, if the synergy effect is equal to or greater than a predetermined threshold, it is determined that there is a synergy effect, and if the synergy effect is less than the predetermined threshold, it is determined that there is no synergy effect. I can judge.

The evaluation unit 24 selects one group from among the groups generated in step S304 (S305). The evaluation unit 24 calculates the evaluation value of the evaluation index selected in step S301 for all combinations of measures included in the group selected in step S305 (S306).

The evaluation unit 24 determines whether or not the process of step S306 has been completed for all groups (S307), proceeds to step S308 if a positive result is obtained, and returns to step S305 if a negative result is obtained. If a negative result is obtained in step S307 (S307: NO), the calculation unit 204 repeats the process of step S306 while sequentially switching the group selected in step S305 to another unprocessed group.

The evaluation unit 24 calculates an approximate solution of the evaluation value of the evaluation index selected in step S301 based on each updated equipment basic information 340 (S308). The evaluation unit 24 determines whether or not the processing of steps S303 to S308 has been completed for all time slices (S309), proceeds to step S310 if a positive result is obtained, and returns to step S302 if a negative result is obtained. If a negative result is obtained in step S309 (S309: NO), the calculation unit 204 repeats the processing of steps S303 to S308 while sequentially switching the time slice selected in step S302 to other unprocessed time slices.

The evaluation unit 24 determines whether or not the processing of steps S302 to S309 has been completed for all evaluation indexes (S310), ends this processing if a positive result is obtained, and returns to step S301 if a negative result is obtained. . If a negative result is obtained in step S310 (S310: NO), the calculation unit 204 repeats the processing of steps S302 to S309 while sequentially switching the evaluation index selected in step S301 to another unprocessed evaluation index.

An example of this process will be described with reference to FIGS. 13 to 15. FIG. The evaluation unit 24 selects one evaluation index in step S301. Here, as an example, the evaluation index "total renewable energy output" is selected.

The evaluation unit 24 selects one time slice in step S302. Here, as an example, "2019" is selected. In step S303, the evaluation unit 24 calculates a synergy effect between individual countermeasures indicated in the countermeasure information.

FIG. 13 shows an example of the result of calculating the synergy effect among the 10 countermeasures shown in the new installation information 311, the enhancement information 312, and the retirement information 313 in FIG. For example, when countermeasure ID "A2" and countermeasure ID "A3" are executed at the same time, "total renewable energy output" is reduced to " 5.7″ increase.

The evaluation unit 24 determines whether or not there is a synergy effect between individual measures based on the synergy effect calculated in step S303, and groups the measures determined to have a "synergy effect". Here, the threshold for determining the presence or absence of synergy effects is set to "5.0", and the presence or absence of synergy effects among individual countermeasures is determined.

FIG. 14 shows the result of determining whether or not there is a synergistic effect. Here, circle marks represent countermeasures determined to have a synergistic effect. For example, countermeasure ID "A2" and countermeasure ID "A3" are determined to have "synergistic effect" and are circled.

FIG. 15 shows groups formed based on the determination result of whether or not there is a synergistic effect. In FIG. 15, connections between measures indicate that there is a synergistic effect. Hereinafter, a countermeasure identified by a countermeasure ID may be referred to by a countermeasure ID. That is, the countermeasure having the countermeasure ID "A2" is called countermeasure "A2" or "A2".

In FIG. 15, "A1", "B2", and "B3" form one group (hereinafter referred to as group G1), and "A2", "A3", "A4", "B1", and "C1" form one group (hereinafter referred to as group G1). , group G2), and one group consisting of "C2" and "C3" (hereinafter referred to as group G3). The evaluation unit 24 selects one group in step S305. Here, group G1 is selected as an example.

The evaluation unit 24 calculates evaluation values for all countermeasure patterns of the selected group. For group G1 consisting of "A1", "B2" and "B3", {A1}, {B2}, {B3}, {A1, B2}, {A1, B3}, {B2, B3}, { A1, B2, B3}, there are a total of seven countermeasure patterns. Therefore, the evaluation unit 24 calculates, for each of the seven countermeasure patterns in total, an evaluation value for the power system when the countermeasures included in the countermeasure pattern are executed.

In step S307, the evaluation unit 24 determines whether or not the process of step S306 has been completed for all groups. Since the groups G2 and G3 still remain here, a negative result is obtained (S307: NO).

After completing the processing of step S306 for all groups, the evaluation unit 24 calculates an approximate solution of the evaluation value for each piece of updated equipment basic information 340 in step S308. For example, assume that the system configuration represented by the updated facility basic information 340 is the system configuration when the measures "A1", "B2", and "C2" are executed.

In this case, based on the evaluation values of {A1, B2} of group G1 and the evaluation values of {C2} of group G3 calculated in step S306, an approximate solution of the evaluation values for updated equipment basic information 340 is obtained. can be calculated. For example, since there is no synergistic effect between {A1, B2} of group G1 and {C2} of group G3, by adding each evaluation value, "A1", "B2" and "C2" It is possible to obtain an approximate solution of the evaluation value for the system configuration when the measures are executed.

If there are 10 countermeasures, a maximum of 1024 (=210) evaluation values must be calculated. Only the evaluation value of (=(8-1)+(32-1)+(4-1)) needs to be calculated. In steps S309 and S310, the evaluation unit 24 determines whether or not the processing of steps S303 to S308 has been completed for all time slices and all evaluation indices, and repeats steps S303 to S308 until a positive result is obtained. repeat the process. By repeating the above process, the evaluation unit 24 calculates an evaluation value for each piece of updated equipment basic information.

According to this embodiment configured in this manner, it is possible to group combinations of countermeasures that satisfy a predetermined constraint, reduce the number of calculation targets, and perform evaluation instead of performing calculations for all possible countermeasure groups. As a result, it is possible to assist the user in efficiently and fairly determining whether or not to implement countermeasures, thereby improving the usability of the power system planning support system.

In addition, the present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described. In addition, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Moreover, it is possible to add, delete, or replace a part of the configuration of each embodiment with another configuration.

In addition, each component of the present invention can be selected arbitrarily, and the present invention includes an invention having a selected configuration. Furthermore, the configurations described in the claims can be combined in addition to the combinations specified in the claims.

As a modification of the example of grouping measures having a synergistic effect, measures that are considered to have no influence on each other may be grouped. For example, even if system facilities are changed (installed, enhanced, or removed) at different locations far apart, they may not affect each other. That is, for example, countermeasures that do not share a specific device such as a transmission line or a transformer may be separated and grouped. Alternatively, countermeasures that share a particular device may be grouped together.

1: system planning device, 2: facility information management device, 3: plan information management device, 4: communication network, 21: facility information acquisition unit, 22: facility plan candidate generation unit, 23: calculation unit, 24: evaluation unit, 25: Plan information registration unit, 31: Countermeasure information storage unit, 32: Plan candidate storage unit, 33: Equipment basic information storage unit, 34: Update equipment basic information storage unit, 35: Evaluation value information storage unit

Claims (10)

A power system planning support system for supporting the formulation of a power system plan,
a plan candidate generation unit that generates a power system plan candidate that satisfies a predetermined constraint in each time section within a preset planning period based on countermeasure information including the details and costs of measures that can be implemented in the power system plan;
Based on the basic facility information indicating the configuration of the current power system and the candidate system plan, update basic facility information indicating the configuration of the power system when the measures included in the candidate system plan are executed are updated to the respective system plans. a computing unit that generates candidates for each time slice;
an evaluation unit that calculates an evaluation value based on a predetermined index for the updated equipment basic information generated for each time slice;
Power system planning support system. The plan candidate generation unit is
In each time section, generating a power system plan candidate in which the total cost of measures included in the power system plan candidate is less than or equal to a predetermined cost;
The power system planning support system according to claim 1. The plan candidate generation unit is
extracting a set of countermeasures, which is a subset that satisfies a predetermined constraint in each of the time sections, from the population of the countermeasures;
generating a power system plan candidate that satisfies the predetermined constraint in each time slice by assigning the countermeasure set to each time slice so that the extracted countermeasure sets have mutually exclusive relationships;
The power system planning support system according to claim 1. The calculation unit is
when generating the updated equipment basic information for the first time slice among the time slices, initializing the updated equipment basic information for the target time slice based on the equipment basic information;
adding the information of the system equipment newly installed when the measures included in the system plan candidate are executed to the updated equipment basic information of the target time section;
updating the update equipment basic information of the target time section for the system equipment to be reinforced when the measures included in the system plan candidate are executed,
deleting information on system equipment that will be removed when the measures included in the system plan candidate are executed, from the updated equipment basic information of the target time slice;
The power system planning support system according to claim 1. The calculation unit is
When the updated equipment basic information is generated for a time slice other than the first time slice among the time slices, the target time slice is based on the updated equipment basic information of the time slice immediately before the target time slice. Initialize the basic information of the update equipment of the time section,
adding the information of the system equipment newly installed when the measures included in the system plan candidate are executed to the updated equipment basic information of the target time section;
updating the update equipment basic information of the target time section for the system equipment to be reinforced when the measures included in the system plan candidate are executed,
deleting information on system equipment that will be removed when the measures included in the system plan candidate are executed, from the updated equipment basic information of the target time slice;
The power system planning support system according to claim 1. The evaluation unit
classifying the measures into a plurality of groups based on predetermined criteria;
For each group, all combination patterns of execution/non-execution of measures included in the group are generated;
For each of the combination patterns, calculating an evaluation value based on a predetermined index for the power system when the measure with execution is executed,
Based on the evaluation value for each of the combination patterns, an approximate value of the evaluation value is calculated for updated equipment basic information when measures belonging to different groups are executed.
The power system planning support system according to claim 1. The evaluation unit
classifying the countermeasures into a plurality of groups based on the organization to which the point where the countermeasure is implemented belongs;
The system planning support system according to claim 6. The evaluation unit
calculating the difference between the effect of executing a plurality of measures independently and the effect of executing the plurality of measures simultaneously;
Determining whether a synergistic effect has occurred between the plurality of countermeasures based on the difference in the effects,
classifying the countermeasures based on the presence or absence of the synergistic effect;
The system planning support system according to claim 6. The evaluation unit groups the measures based on the criteria that they do not affect each other in the power system.
The system planning support system according to claim 6. A power system planning support method for supporting the formulation of a power system plan using a computer,
The calculator is
a plan candidate generation step of generating a power system plan candidate that satisfies a predetermined constraint in each time section within a preset planning period based on countermeasure information including details and costs of measures that can be implemented in the power system plan;
Based on the basic facility information indicating the configuration of the current power system and the candidate system plan, update basic facility information indicating the configuration of the power system when the measures included in the candidate system plan are executed are updated to the respective system plans. a computing step of generating candidates for each time slice;
an evaluation step of calculating an evaluation value based on a predetermined index for the updated equipment basic information generated for each time slice;
System planning support method for executing

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