An energy microgrid load frequency control method, system and related products

Abstract

The invention discloses a load frequency control method, system and related products of an energy microgrid. The method includes the following steps: establishing a load frequency response model of each component of the energy microgrid; a load frequency controller designed based on a generalized predictive control algorithm; The superconducting coil parameters of the SMES system are optimized to achieve optimal adjustment of the frequency deviation of the energy micro-grid; the components of the energy micro-grid include LIQHYSMES devices, micro gas turbines, electric vehicle charging stations and smart loads. The present invention proposes a more robust coordinated load frequency controller based on a generalized prediction algorithm, which is applied to the load frequency control of energy microgrids containing liquid hydrogen superconducting energy storage devices, and can effectively maintain the frequency of energy microgrids Stable; in addition, the present invention proposes the optimal design of superconducting coil parameters, including the optimization of initial current, inductance and initial stored energy, so as to obtain better 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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