Multi-time scale demand response-based concentrated hybrid energy storage synergic control method

Abstract

The invention discloses a multi-time scale demand response-based concentrated hybrid energy storage synergic control method. The multi-time scale demand response-based concentrated hybrid energy storage synergic control method comprises the following steps of S1, building a user multi-type demand power utilization characteristic model; S2, building a multi-time scale demand response model; and S3,determining a synergic control strategy of a concentrated hybrid energy storage system according to the multi-type demand power utilization characteristic model and the multi-time scale demand response model. According to the method, the charge-discharge strategy of the concentrated hybrid energy storage system is made according to the charge-discharge characteristics of the storage battery and the supercapacitor, the charge state and the user multi-type demand characteristic, the clean energy absorption is facilitated, the system running quality is optimized, and meanwhile, the running economy of the concentrated hybrid energy storage system is improved.

Description

technical field [0001] The invention belongs to the technical field of coordinated control of centralized hybrid energy storage, and in particular relates to a method for coordinated control of centralized hybrid energy storage based on multi-time scale requirements. Background technique [0002] At present, clean energy is mostly integrated into the user side with small capacity and in a decentralized manner. The randomness and volatility of various types of user loads and distributed power output have become a huge challenge for system security and economic operation. In terms of regulation and optimization, most of the advantages of energy storage for optimizing distribution network operation are discussed on a single time scale from the aspects of load shifting and clean energy consumption; There are bound to be problems in the following aspects with the increase of user-side grid connection and power load types; [0003] 1. The rapid growth of user-side controllable lo...

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Problems solved by technology

[0006] Therefore, some scholars propose to use the hybrid energy storage system to solve the problem of system operation optimization, use the high energy density of energy-based energy storage to absorb excess clean energy power generation, and use the rapid charging and discharging capabilities of high-power energy storage to stabilize system fluctuations. In the research, the impact of short-term load forecast deviation on distribution network operation control is often ignored, and the regulation of distribution network fluctuations in short time scales is based on the characteristics of large battery capacity but slow response speed and rapid discharge of super capacitors in hybrid energy storage systems. Research on the impact of capacity and system operating economics remains stagnant

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