Comprehensive frequency modulation performance index optimization method
An index optimization and performance technology, applied in the direction of AC network load balancing, reducing/preventing power oscillation, AC network circuit, etc., can solve the problems of no energy storage system combined with the unit, the overall effect is unsatisfactory, the effect is average, etc., to achieve a high-quality system FM service, high utilization value, and the effect of increasing the k value
Pending Publication Date: 2022-05-06
佛山恒益热电有限公司
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[0005] At present, the k value calculation of the comprehensive frequency modulation performance index also improves the k value by optimizing the output command, but the overall effect is not satisfactory, and the energy storage system is not better combined with the unit, and the effect is average.
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[0083] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0084] see Figure 1-6 , this embodiment takes a 600MW unit and a supporting energy storage system with a capacity of 20MW as an example to introduce the comprehensive frequency regulation performance index optimization method of the present invention.
[0085] 1. Relevant variables and calculation rules involved in frequency modulation trading rules:
[0086] see figure 1 , figure 1 Process diagram for the generator unit to respond to frequency modulation commands: at T 1 The output of the power generation unit at any time is P 1 , at this time the system issues a frequency modulation command, and the target output is P 4 , after a certain response time, at T 2 The output of the power generation unit reaches P at all times 2 , which is greater than the action dead ...
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The invention discloses a comprehensive frequency modulation performance index optimization method, which comprises the following steps of: firstly, calculating a PZ value through a frequency modulation target instruction issued by a system, then calculating a k1 value by using the obtained PZ value, dividing the PZ into a small instruction and a large instruction according to the obtained k1 value, and respectively adopting a subsection control strategy and a fuzzy control strategy for the small instruction and the large instruction, a fixed control mode is adopted for the small instruction; a fuzzy control mode is adopted for the large instruction; by adopting the segmented control strategy and the fuzzy control strategy, the regulation rate index k1, the response time index k2 and the regulation precision index k3 in the comprehensive frequency modulation performance index k can be optimized, so that the maximum comprehensive frequency modulation performance index k is obtained, the energy storage system outputs a frequency modulation instruction of a tracking system more reasonably and stably, and the energy storage efficiency is improved. And the calculation of the comprehensive frequency modulation performance index k value is optimized through the fuzzy control mode theory, so that the most reasonable response is made, the optimal system frequency modulation service is output, and the frequency modulation income is improved.
Description
technical field [0001] The invention relates to a method for a combined unit of an energy storage frequency modulation system to respond to a frequency modulation command, in particular to a method for optimizing a comprehensive frequency modulation performance index. Background technique [0002] Frequency modulation auxiliary service mainly refers to the service that can automatically respond to the area control deviation (ACE) through the automatic generation control device (AGC) in the secondary frequency modulation backup of the generator, adjust the power generation output in real time according to a certain adjustment rate, and meet the ACE control requirements. The value is automatically generated according to the area control deviation (ACE), and the frequency regulation command value is allocated by calculating the rated capacity and regulation rate of different units, which has uncertainty, and its regulation effect is measured by the frequency regulation mileage. ...
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IPC IPC(8): H02J3/24H02J3/32H02J3/46
CPCH02J3/241H02J3/32H02J3/466H02J2203/20
Inventor 陈文坚
Owner 佛山恒益热电有限公司