Wind power plant energy storage configuration method considering annual service life of stored energy

Abstract

The invention provides a wind power plant energy storage configuration method considering energy storage annual service life, which comprises the following steps of: S1, analyzing the service life loss characteristics of two types of energy storage of a storage battery and a super capacitor, and establishing an actual service life annual value mathematical model; s2, analyzing and integrally considering dispatching demand characteristics of grid connection of wind power in day-ahead and intra-day stages, performing energy storage configuration by taking annual operation income of the wind power plant as a target, and constructing a wind power plant integral energy storage optimal configuration model considering the annual service life of energy storage; and S3, solving by taking a certain actual wind power plant as example data to obtain a configuration result of the energy storage optimization configuration model. According to the method, the energy storage service life loss and the day-ahead and intra-day stage wind power dispatching requirements are taken into consideration, the characteristics and values of different types of energy storage are utilized, the economical efficiency of configuration energy storage of the wind power plant is improved, and new energy development is effectively assisted.

Description

technical field [0001] The invention relates to the field of new energy power system technology and energy storage applications, and specifically relates to a wind farm energy storage configuration method that takes into account the service life of the energy storage. Background technique [0002] my country's wind power continues to grow rapidly and has gradually entered the stage of large-scale development of wind power. According to data released by the National Energy Administration, by the end of 2019, the cumulative installed capacity of wind power in the country reached 210 million kilowatts. However, due to the characteristics of anti-peak regulation, randomness, and volatility of wind power, the development of large-scale wind power has brought about a large number of problems such as wind curtailment and grid-connected power fluctuations, which have a negative impact on the reliable and safe operation of the power system. . For this reason, national and regional g...

AI Technical Summary

Problems solved by technology

However, the current energy storage configuration is too large for one-time investment, and due to the short cycle life of energy storage, the economic efficiency of energy storage combined with wind power grid connection is poor.

[0004] Many achievements have been made in the energy storage configuration of wind power. However, at this stage, most of the research is on the configuration of energy storage for the problem of wind curtailment or wind power fluctuation, and less discussion is made on the relationship between wind curtailment, wind power fluctuation and the corresponding dispatching stage.

In addition, less consideration is given to the impact of the actual use of electric energy storage on the life of energy storage, that is, the impact of the actual use of electric energy storage on energy storage costs is ignored

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