Energy storage system-thermal power unit combined frequency modulation control method
A technology for thermal power units and energy storage systems, which is applied in electrical energy storage systems, general control systems, control/regulation systems, etc., to achieve optimal economic performance, improve sustainability and availability, and have reasonable action time and action depth. Effect
Active Publication Date: 2022-03-25
TSINGHUA UNIV +1
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[0006] The purpose of the present invention is to solve the problem of the energy storage system control strategy in the existing energy storage system-thermal power unit joint frequency modulation, and propose an energy storage system-thermal power unit joint frequency modulation control method that considers frequency modulation performance assessment. This method is a method that considers frequency modulation performance The control strategy of energy storage system in different periods of assessment, through reasonable control of the action timing and depth of energy storage system, improves the utilization rate of energy storage system and the frequency modulation performance of the combined frequency modulation unit, so as to increase the benefits of power plants participating in frequency modulation auxiliary services
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[0047] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and implementation examples. It should be understood that the specific embodiments described herein are only used to explain the present invention, and do not limit the protection scope of the present invention.
[0048] In order to better understand the present invention, an application example of the energy storage system-thermal power unit combined frequency regulation control method proposed by the present invention considering frequency regulation performance assessment is described in detail below.
[0049] In the actual system engineering, the configuration transformation of the energy storage system in the power plant must be carried out on the premise of not affecting the safe operation of the power plant system, so usually the thermal power unit continues...
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This invention proposes an energy storage system-thermal power unit joint frequency modulation control method that considers frequency modulation performance assessment. First, obtain the basic status of the joint frequency modulation unit at a certain moment in the current frequency modulation cycle; divide and determine the working period of the joint frequency modulation unit according to the index calculation rules of the frequency modulation unit participating in the frequency modulation auxiliary service; obtain each joint frequency modulation unit separately for different working periods. The control target active power during the working period is combined with the active power of the thermal power unit to obtain the target active power of the energy storage system; the power limit and capacity limit of the energy storage system are comprehensively considered to correct the target active power of the energy storage system to obtain the final storage system. Energy system active power. The method of the present invention is aimed at the control strategy of the energy storage system when the energy storage system and thermal power units jointly participate in frequency modulation auxiliary service conditions. By taking the frequency modulation assessment index of the frequency modulation unit as a guide, the action timing and action depth of the energy storage system are reasonably controlled and effectively exerted. The role of energy storage systems.
Description
Technical field [0001] The invention belongs to the technical field of automatic power generation control of electric power systems, and specifically relates to an energy storage system-thermal power unit joint frequency modulation control method that considers frequency modulation performance assessment. Background technique [0002] Frequency regulation auxiliary services mainly refer to services in which the generator adjusts the active power of the generator in real time according to a certain adjustment rate through the Automatic Generation Control System (Automatic Generation Control, hereafter referred to as AGC) to meet the requirements of automatic response to Area Control Error (ACE). The AGC frequency regulation of my country's power system is mainly undertaken by thermal power units. As the penetration ratio of new energy increases, the frequency characteristics of the power system become more complicated. Traditional thermal power units are limited by their own c...
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IPC IPC(8): H02J3/24H02J3/46H02J3/28
CPCH02J3/24H02J3/46H02J3/28H02J3/241H02J3/48H02J7/0048H02J7/007182G05B17/02H02J15/00
Inventor 陆超陈雪梅宋洁刘杰吴京涛
Owner TSINGHUA UNIV