Energy microgrid load frequency control method and system and related products

Abstract

The invention discloses an energy microgrid load frequency control method, an energy microgrid load frequency control system and related products. The method comprises the following steps of establishing a load frequency response model of each component of an energy microgrid; designing a load frequency controller based on a generalized predictive control algorithm; and optimizing the superconducting coil parameters of an SMES system to optimize and adjust the frequency deviation of the energy microgrid, wherein each assembly of the energy microgrid comprises an LIQHYSMES device, a micro gas turbine, an electric vehicle charging station and an intelligent load. The invention provides a high-robustness coordinated load frequency controller based on a generalized prediction algorithm, wherein the controller is applied to load frequency control of an energy microgrid containing a liquid hydrogen superconducting energy storage device, and can effectively maintain the frequency stability ofthe energy microgrid; and the invention provides an optimization design of superconducting coil parameters, wherein the optimization design comprises: optimizing initial current, inductance and initial storage energy so as to obtain a good frequency control effect.

Description

technical field [0001] The invention relates to the technical field of load frequency control of energy microgrids, and specifically aims at the problem of load frequency control of energy microgrids containing liquid hydrogen superconducting energy storage. Background technique [0002] The increase in the penetration rate of renewable energy sources (Renewable Energy Sources, RES) and distributed generation (Distributed Generation, DG) is likely to cause power fluctuations, and it is difficult to meet the real-time balance between power generation and load demand, which poses a challenge to the stability and reliability of the power system. severe challenge. Considering the cost of conventional energy, greenhouse gas emissions, and the security of traditional power systems, the concept of Energy Internet came into being. The Energy Internet consists of many energy microgrids and supports flexible access to multiple renewable energy sources. The concept of energy microgri...

AI Technical Summary

Problems solved by technology

However, in an energy microgrid containing a large number of distributed renewable energy sources, due to the combined disturbance generated by the fluctuation of renewable energy and the change of load frequency, it is very necessary to have a strong robust controller that can coordinate each unit of the energy microgrid, and can fully A load frequency control method that takes advantage of liquid hydrogen superconducting energy storage to stabilize fluctuations

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