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Gas turbine electric energy storage system capacity configuration method for improving frequency modulation income of power plant

A technology of system capacity and electric energy storage, which is applied in the field of capacity allocation of gas-fired unit electric energy storage system to improve the frequency regulation income of power plants, and can solve problems such as no theoretical analysis.

Pending Publication Date: 2021-03-09
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology

[0005] 2. A key condition for the implementation of black start is whether the range of the initial state of charge of the battery is within a reasonable range. There is no theoretical analysis in previous literature

Method used

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  • Gas turbine electric energy storage system capacity configuration method for improving frequency modulation income of power plant
  • Gas turbine electric energy storage system capacity configuration method for improving frequency modulation income of power plant
  • Gas turbine electric energy storage system capacity configuration method for improving frequency modulation income of power plant

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] The method for capacity allocation of the gas-fired unit electric energy storage system for improving the frequency regulation benefit of the power plant provided by the present invention, the method establishes an energy storage economic model for improving the frequency regulation benefit, and calculates the range of the state of charge in the initial state, which is a black start Whether it can be executed provides a judgment condition. The cost of an energy storage device consists of two parts: basic cost and maintenance cost. The basic cost is mainly composed of the battery body, energy conversion equipment and auxiliary equipment of the battery. Basic cost of energy storage C all Calculated as follows:

[0034] C all =C x +C n +C f (1)

[0035]

[0036] C n =C p P b (3)

[0037] C f =C A E. b (4)

[0038] especially C x is the batter...

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Abstract

The invention discloses a gas turbine electric energy storage system capacity configuration method for improving frequency modulation income of a power plant. The method comprises the following steps:1) establishing an energy storage cost model; 2) according to the cost model obtained in the step 1), establishing an energy storage economy model taking maximum net income as an objective function;3) calculating the optimal capacity of unit configuration energy storage by adopting a genetic -simulated annealing algorithm; and 4) calculating the initial state-of-charge range from three aspects of the rated capacity and power limit of the battery module and the capacity of the energy conversion system, and judging conditions for black start. According to the method, the economy of the electric energy storage system of the gas unit is improved bidirectionally from two aspects, firstly, an energy storage economy model taking maximum net income as a target function is established, and the optimal capacity of unit configuration energy storage is calculated. Secondly, an initial state-of-charge range is calculated from three aspects of rated capacity and power limit of the battery module and capacity of the energy conversion system, and conditions for black start are judged;.

Description

technical field [0001] The invention belongs to the field of energy storage capacity optimization and operation, and in particular relates to a method for capacity allocation of a gas-fired unit electric energy storage system for improving the frequency modulation income of a power plant. Background technique [0002] The battery energy storage system can be used as a new type of power supply for the black-start power supply of gas-fired units. It has the advantages of short response time and fast recovery speed, and plays an important role in enhancing the power restart of local power plants. At the same time, battery energy storage, as a new frequency regulation method, has gradually entered the auxiliary service market and participated in the automatic generation control (AGC) of traditional units. [0003] The document "Discussion on 9F Single-shaft Gas Turbine as Black Start Power Point of Power Grid" discusses the restrictive factors of 9F gas turbine as a black start ...

Claims

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Application Information

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IPC IPC(8): G06Q50/06G06F30/27G06F111/04
CPCG06Q50/06G06F30/27G06F2111/04Y04S10/50Y02E40/70
Inventor 李志鹏杨沛豪寇水潮薛磊李元钊郭新宇赵俊博贺婷郭霞姜宁葛英来王羚宇赵守柱耿如意王妍
Owner XIAN THERMAL POWER RES INST CO LTD
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