Energy storage configuration method for improving frequency stability of new energy high-proportion region based on improved average value method
A technology of frequency stability and average value method, which is applied in the field of energy storage configuration to improve the frequency stability of areas with a high proportion of new energy, can solve problems such as frequency and voltage exceeding limits, and achieve the goal of improving frequency stability and acceptance capacity Effect
Pending Publication Date: 2021-10-01
国网江苏省电力有限公司淮安供电分公司
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Problems solved by technology
Due to the volatility and randomness of new energy power generation output, its penetration rate continues to increase, which also poses severe challenges to the safe operation of the power system. In severe cases, it will cause problems such as frequency and voltage violations.
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[0029] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0030] figure 1 It is a flow chart of configuring energy storage in areas with a high proportion of new energy. The invention discloses an energy storage configuration method based on the improved average value method to improve the frequency stability of areas with a high proportion of new energy sources. Load curve, new energy output volatility and other factors are used to evaluate the limit access capacity of regional power grids for new energy access. Then, the configuration method of the energy storage system is proposed from the two aspects of rated power and rated capacity. Considering the active response speed of the new energy station and the amount of curtailed wind and light, an av...
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The invention relates to the technical field of power electronics, and discloses an energy storage configuration method for improving the frequency stability of a new energy high-proportion region based on an improved average value method. The method comprises the following steps: employing a new energy power station admission power calculation method based on the frequency and voltage stability of a power system; comprehensively considering factors such as a system load curve, new energy output fluctuation and the like, and evaluating the limit penetration capacity meeting the power grid frequency and voltage fluctuation standard; from two aspects of rated power and rated capacity, providing an average value method considering confidence to determine the rated power of the energy storage system; and finally determining the rated capacity of the energy storage battery according to the rated power of the energy storage system. Compared with the prior art, the technical problem of energy storage configuration by adopting an average value method is solved, the acceptance capability of the regional power grid for high-proportion new energy power generation is improved, and the frequency stability of the regional power grid is improved.
Description
technical field [0001] The invention relates to the technical field of new energy power generation, in particular to an energy storage configuration method for improving the frequency stability of areas with a high proportion of new energy based on an improved average value method. Background technique [0002] At present, China has proposed a "dual carbon" goal at the United Nations General Assembly. Under the "double carbon" goal, promoting the transformation of the energy structure to new energy will become the focus of the development of the power system. China clearly stated that by 2030, the total installed capacity of wind power and photovoltaic power generation will reach more than 1.2 billion kW. Due to the volatility and randomness of new energy power generation output, its increasing penetration has also posed severe challenges to the safe operation of the power system. In severe cases, it will cause problems such as frequency and voltage violations. [0003] In...
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IPC IPC(8): H02J3/32H02J3/24H02J3/38
CPCH02J3/32H02J3/241H02J3/381H02J2203/20H02J2300/24H02J2300/28Y02E10/56
Inventor 徐晓春李佑伟史雪涛李浩
Owner 国网江苏省电力有限公司淮安供电分公司