Cooperative operation method and system for participating in main energy and frequency modulation of thermal power and energy storage combined power station

An operation method and technology of an energy storage system, which are applied in the field of coordinated operation of a combined thermal-storage power station participating in the main energy and frequency regulation auxiliary service markets to improve frequency regulation performance, increase opportunities for participating in frequency regulation services, and ensure better deployment effects.

Pending Publication Date: 2022-03-01
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
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  • Application Information

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Problems solved by technology

However, according to the current research, there are few studies on the joint energy storage system of thermal power manufacturers to participate in the main energy and frequency modulation services

Method used

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  • Cooperative operation method and system for participating in main energy and frequency modulation of thermal power and energy storage combined power station
  • Cooperative operation method and system for participating in main energy and frequency modulation of thermal power and energy storage combined power station
  • Cooperative operation method and system for participating in main energy and frequency modulation of thermal power and energy storage combined power station

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] This embodiment provides a coordinated operation method for a thermal-storage combined power station to participate in main energy and frequency regulation, such as figure 1 shown, which includes:

[0093] Step 1: Calculate the frequency modulation response performance of the thermal power unit and the energy storage system under the unit frequency modulation signal;

[0094] Step 2: Construct a double-layer operation model of combined thermal power plant with main energy and frequency modulation signal;

[0095] Step 3: Convert the lower model constraints of the two-layer model constructed in Step 2 into linear constraints using constraint relaxation theory, and convert the two-layer model into a single-layer model using KKT conditions (Karush–Kuhn–Tucker conditions).

[0096] The step 1 is specifically:

[0097] Based on the corresponding inertial parameters of the thermal power unit and the energy storage system, the frequency modulation response performance of the...

Embodiment 2

[0171] This embodiment provides a coordinated operation system in which the fire-storage combined power station participates in main energy and frequency regulation, such as figure 2 shown, which includes:

[0172] Frequency modulation response performance calculation unit: calculate the frequency modulation response performance of the thermal power unit and energy storage system under the frequency modulation signal of the unit;

[0173] The construction unit of the double-layer operation model of the thermal-storage combined power station: construct the double-layer operation model of the combined thermal-storage power station under the main energy and frequency modulation signal;

[0174] Single-layer model conversion unit: use constraint relaxation theory to transform the lower model constraints of the constructed dual-layer model of combined thermal storage combined power plant into linear constraints, and use KKT conditions to convert the double-layer model into a single-...

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Abstract

The invention discloses a cooperative operation method and system for a thermal power storage combined power station to participate in main energy and frequency modulation. According to the technical scheme, the cooperative operation method comprises the steps that the frequency modulation response performance of the thermal power generating unit and the energy storage system is calculated; constructing a fire energy storage combined power station double-layer operation model under main energy and frequency modulation signals; and converting the lower-layer model constraint of the constructed double-layer model into linear constraint by adopting a constraint relaxation theory, and converting the double-layer model into a single-layer model by adopting a KKT condition. On one hand, main energy and frequency modulation auxiliary service markets are jointly optimized and cleared, and compared with an independent clearing mode, better allocation of market regulation resources is guaranteed; on the other hand, the frequency modulation performance of a traditional thermal power generating unit is effectively improved through the rapid adjustment capacity of the energy storage system.

Description

technical field [0001] The invention relates to the field of electric power market operation, in particular to a method for coordinated operation of a thermal storage combined power station participating in the main energy and frequency modulation auxiliary service market. Background technique [0002] In the traditional power industry, thermal power manufacturers arrange output according to the day-ahead unit combination formulated by the power grid dispatching organization, and on the operation day, according to the frequency regulation instructions issued by the power grid dispatching organization, the units with AGC frequency modulation modules adjust their output according to the instructions. During this process, the units are very There is little room for independent choice. At the same time, for the electricity receiving type grid, with the increasing proportion of new energy and the proportion of hydropower transmission from west to east, in order to ensure the acce...

Claims

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Application Information

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IPC IPC(8): H02J3/24H02J3/48H02J3/32
CPCH02J3/241H02J3/48H02J3/32H02J2203/20
Inventor 房乐王旭陆承宇邓晖周子青章枫徐程炜龚开许高秀蒋传文华文罗华峰马骏超彭琰周升彧
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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