Distribution network operation optimization method for joint access of intelligent soft switch and energy storage device

Abstract

A distribution network operation optimization method for joint access of intelligent soft switches and energy storage devices, the method is carried out according to the following steps: a. A distribution network model for joint access of SNOP and energy storage is established by using back-to-back VSCs and batteries; b. .Establish a day-ahead dynamic optimization model of the distribution network based on SNOP and energy storage devices; c. Use the genetic algorithm to solve the optimization model to obtain the control reference value: the active power P flowing through the VSC on the side I of the feeder I , The active power P flowing through the feeder J side VSC J , the reactive power Q emitted by the VSC on the feeder I side I , Reactive power Q emitted by VSC on feeder J side J , and a two-step correction strategy to improve the service life of energy storage devices and the consumption level of uncontrollable distributed power is given. The invention combines the SNOP and the energy storage device together to form a highly integrated intelligent distribution network comprehensive regulation and optimization device, which further strengthens the scheduling control ability of the SNOP, so that it has both power transmission function and energy storage function, which can effectively Suppress fluctuations caused by new energy access and improve the capacity of distributed power generation.

Description

technical field [0001] The invention relates to a distribution network operation optimization method, which can stabilize intermittent energy power fluctuations, improve the consumption level of high-penetration distributed power sources, and balance feeder loads. Background technique [0002] At present, with the rapid development of the economy, the world is facing the double pressure of the depletion of non-renewable energy sources and serious environmental pollution. As an indispensable form of energy in today's society, electric energy is also facing a major change in the form of production. The grid-connected scale of renewable energy power generation is increasing year by year. Renewable energy power generation is of great significance to the development of a resource-saving and environment-friendly society. However, due to the influence of climate, environment and other factors, renewable energy power generation has obvious randomness and volatility. Large voltage ...

AI Technical Summary

Problems solved by technology

Most of the existing research focuses on the operation control strategy of SNOP alone access, only a few of which involve the joint access of SNOP and energy storage, and none of them involve the multi-time scale operation optimization method of distribution network based on the joint access of the two. Therefore, there is an urgent need for a distribution network multi-time scale operation optimization method that considers the joint access of intelligent soft switches and energy storage devices to enhance the dispatching and control capabilities of SNOP

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