Optimal control method and system for energy storage system participating in power grid frequency modulation, and storage medium

An energy storage system and optimal control technology, applied in the direction of circuit devices, AC network circuits, AC network load balancing, etc., can solve the problem of less physical energy storage applications
CN112615399AInactive Publication Date: 2021-04-06JIANGSU ELECTRIC POWER CO +1
1 Cites 14 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU ELECTRIC POWER CO
Publication Date
2021-04-06
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an optimal control method and system for an energy storage system participating in power grid frequency modulation, and a storage medium. The method comprises the following steps of (1) constructing a function suitable for reflecting frequency modulation operation cost of a thermal power generating unit and an energy storage system, (2) calculating a weight coefficient based on the power change rate and the SOC deviation, (3) establishing an AGC frequency modulation control target optimization function, (4) establishing AGC frequency modulation control constraint conditions, and solving the established AGC frequency modulation control objective optimization function by using a genetic algorithm to obtain an instruction distribution result of AGC instructions issued by the scheduling center between the thermal power generating unit and the energy storage system at each moment, and (5) establishing an energy storage auxiliary thermal power generating unit frequency modulation model, and obtaining a frequency deviation value, an energy storage system charge state, a fire storage frequency modulation instruction distribution result and an actual output value of the regional power grid at each moment. According to the method, the unit loss can be effectively reduced, and the frequency modulation response rate and quality are greatly improved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to an energy storage frequency modulation control method, system and storage medium, in particular to a genetic algorithm-based optimization control method for an energy storage system participating in power grid frequency modulation. Background technique

[0002] Frequency is one of the important indicators to measure the power quality in the power grid. In order to maintain the safe and stable operation of power generation equipment and electrical equipment in the power system, it is necessary to keep the frequency of the power grid within a qualified range through various means.

[0003] At present, in my country's power system, conventional thermal power units are mainly used to bear the basic load of the power grid, provide AGC frequency modulation services, and maintain the safety and stability of the power grid. However, due to the slow response speed of frequency modulation of conventional thermal power units, frequent sta...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More