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EP-4742479-A1 - POWER OPERATION SYSTEM

EP4742479A1EP 4742479 A1EP4742479 A1EP 4742479A1EP-4742479-A1

Abstract

A power operation system according to the present invention comprises: one or more acquisition units selected from a state acquisition unit that acquires various states of a storage battery such as a charging rate, a capacity deterioration state, a battery temperature of a storage battery and the like, a power trade-price acquisition unit that acquires a future power trade-price prediction value in a power transaction market, an imbalance-fee acquisition unit that acquires a future imbalance-fee prediction value, a power-generation amount acquisition unit that acquires a future power-generation amount prediction value, and a power-demand amount acquisition unit that acquires a future power-demand amount prediction value; a plan creation unit that creates one or more selected from a charge/discharge plan of the storage battery having a maximum power operation profit, a power-generation sales plan, and a demand procurement plan on the basis of some or all of the states of the acquired storage battery and a power generation facility or a power consumption facility, the power trade price, the imbalance fee, the power generation amount, and the power-demand amount prediction value; and a storage unit that stores a constraint condition for restricting an operation of the storage battery and an avoidance measure of the restriction.

Inventors

  • TANNO, YUSUKE
  • Ohashi, Akifumi

Assignees

  • Sustech Inc.

Dates

Publication Date
20260513
Application Date
20240816

Claims (5)

  1. A power operation system, comprising: one or more acquisition units selected from a state acquisition unit that acquires a current state and a future state prediction of a storage battery including at least one selected from a state of charge (SOC) of the storage battery, a state of health (SOH) of the storage battery, and a battery temperature, and a current state and a future state prediction of a power generation facility or a power consumption facility, a power trade-price acquisition unit that acquires a future power trade-price prediction value in a power transaction market, an imbalance-fee acquisition unit that acquires a future imbalance-fee prediction value, and a power-generation amount acquisition unit that acquires a future power generation amount prediction value and a power-demand amount acquisition unit that acquires a future power-demand amount prediction value; a plan creation unit that creates some or all of a charging and discharging plan of the storage battery, a generated-power sales plan, and a demand and procurement plan that maximize a power operation profit based on some or all of the current state and the future state prediction of the storage battery, the current state and the future state prediction of the power generation facility or the power consumption facility, the power trade-price prediction value, the imbalance-fee prediction value, the power-generation amount prediction value, and the power-demand amount prediction value that are acquired by the acquisition unit selected; and a storage unit that stores constraint conditions for constraining an operation of the storage battery and an avoidance measure of the constraint.
  2. The power operation system according to claim 1, comprising: a determination unit that determines a section in which the charging and discharging plan, the generated-power sales plan, and the demand and procurement plan that are created need to be changed, based on the constraint conditions stored, a calculation comparison unit that calculates and compares, in the section determined by the determination unit, two or more selected from a power operation profit in a case where the charging and discharging plan, the generated-power sales plan, and the demand and procurement plan are changed, a power operation profit in a case where the avoidance measure of the constraint conditions is performed, and a power operation profit in a case where the charging and discharging plan, the generated-power sales plan, and the demand and procurement plan are changed and the avoidance measure of the constraint conditions is performed; and a plan determination unit that changes the charging and discharging plan, the generated-power sales plan, and the demand and procurement plan or performs the avoidance measure of the constraint conditions, based on a comparison result from the calculation comparison unit.
  3. The power operation system according to claim 2, wherein the constraint conditions include a constraint of a charging and discharging duration due to temperature changes of the storage battery, a constraint of upper and lower limit temperatures at which the charging and discharging are stopped, a constraint of a current amount during the charging and discharging, and a constraint of upper and lower limits of an SOC.
  4. The power operation system according to claim 2, wherein the avoidance measure includes an adjustment of a charging and discharging amount of the storage battery, and cooling or heating of the storage battery.
  5. The power operation system according to claim 2, wherein the power operation profit is able to be calculated using one or more selected from a cost of power associated with performance of the avoidance measure, a cost of power used for an auxiliary device installed in each of a power generation facility and the storage battery, and an imbalance fee.

Description

TECHNICAL FIELD The present invention relates to a power operation system. BACKGROUND ART In power generation methods, such as solar power generation and wind power generation, that are likely to be affected by weather conditions, an attempt has been conventionally made to purchase and sell power according to the variation in a power generation amount for each time slot. Patent Document 1 discloses a power management system that creates a power generation plan based on power demand prediction data created by power-demand individual information and weather information on a demand side of the power, and a bid plan based on the power generation plan and an assumed power exchange price assumed for bid conditions and a settlement price at the electric power exchange. Citation List Patent Documents Patent Document 1: Japanese Unexamined Patent Application, Publication No. 2009-303411 DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The conventional technology involves creating the power generation plan and the bidding plan, but does not suggest maximizing the benefits by optimizing the power operation such as generation, consumption, trade, and storage of power using the prediction of a power trade price in a power transaction market and the characteristics of a storage battery. In particular, changes over time in the charging and discharging capability based on the characteristics of a storage battery result in a missed opportunity to obtain the benefits in a power bilateral transaction and a power market transaction in some cases. The present invention provides a power operation system that maximizes benefits in power operation in a power bilateral transaction and a power market transaction based on predictions regarding a fluctuation of a power trade price in a power transaction market, a change in charging and discharging performance of a storage battery, and operation constraints. Means for Solving the Problems A power operation system of one aspect of the present invention includes one or more acquisition units selected froma state acquisition unit that acquires a current state and a future state prediction of a storage battery including at least one selected from a state of charge (SOC) of the storage battery, a state of health (SOH) of the storage battery, and a battery temperature, and a current state and a future state prediction of a power generation facility or a power consumption facility,a power trade-price acquisition unit that acquires a future power trade-price prediction value in a power transaction market,an imbalance-fee acquisition unit that acquires a future imbalance-fee prediction value, anda power-generation amount acquisition unit that acquires a future power generation amount prediction value and a power-demand amount acquisition unit that acquires a future power-demand amount prediction value,a plan creation unit that creates some or all of a charging and discharging plan of the storage battery, a generated-power sales plan, and a demand and procurement plan that maximize a power operation profit based on some or all of the current state and the future state prediction of the storage battery, the current state and the future state prediction of the power generation facility or the power consumption facility, the power trade-price prediction value, the imbalance-fee prediction value, the power-generation amount prediction value, and the power-demand amount prediction value that are acquired by the acquisition unit selected, anda storage unit that stores constraint conditions for constraining an operation of the storage battery and an avoidance measure of the constraint. According to the present invention, a user's profit by the power operation can be maximized by acquiring the current and future states of the storage battery and the state of the other power generation facility or the power consumption facility, the future power trade price and imbalance fee, and the information that affects the power generation amount and the power demand amount, and creating the charging and discharging plan of the storage battery, the generated-power sales plan of the power, and the demand and procurement plan (hereinafter, referred to as a "power operation plan" in this specification) based on these information. The power operation system of one aspect of the present invention further includes a determination unit that determines a section in which the charging and discharging plan, the generated-power sales plan, and the demand and procurement plan that are created need to be changed, based on the constraint conditions stored,a calculation comparison unit that calculates and compares, in the section determined by the determination unit,two or more selected froma power operation profit in a case where the charging and discharging plan, the generated-power sales plan, and the demand and procurement plan are changed,a power operation profit in a case where the avoidance measure of the