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Power system flexibility improvement method based on energy storage capacity configuration

A technology of power system and energy storage capacity, applied in electrical components, circuit devices, AC network circuits, etc., can solve the problem of not considering the influence of power system flexibility, and achieve the improvement of flexibility regulation efficiency, excellent flexibility regulation ability, The effect of reducing the likelihood

Pending Publication Date: 2022-07-29
STATE GRID ZHEJIANG ELECTRIC POWER +1
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Problems solved by technology

In the few results that use battery energy storage to provide flexible regulation, the impact of the acceptance probability of BES aggregators providing FRP services on the flexibility of the power system is not considered, such as 201911020073.6

Method used

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  • Power system flexibility improvement method based on energy storage capacity configuration
  • Power system flexibility improvement method based on energy storage capacity configuration
  • Power system flexibility improvement method based on energy storage capacity configuration

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Embodiment Construction

[0104] The present invention will be further described below with reference to the accompanying drawings.

[0105] refer to Figure 1 to Figure 9 , a method for participating in the flexibility adjustment of the power system by using battery energy storage as a resource for providing flexible adjustment capacity, including the following steps:

[0106] S1: Use the Bayesian deep neural network method to forecast and estimate the net load of the power system. On this basis, according to the fluctuation of the net load obtained from the forecast, reasonably divide the probability that the Flexbile ramping product (FRP) will be accepted in the past few days. grade.

[0107] S2: Then, according to the difference between the charging and discharging characteristics of battery energy storage (BES), analyze the mode of BES participating in the flexibility adjustment of the power system, and summarize the structural composition of different products and services provided by BES and th...

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Abstract

A power system flexibility improving method based on energy storage capacity configuration comprises the steps that S1, a Bayesian deep neural network method is adopted to predict and estimate the net load of a power system, and on the basis, the acceptance probability level of a flexible adjustment product FRP is divided according to the predicted net load fluctuation condition; s2, selecting a battery energy storage (BES) as a novel source for providing FRP, and formulating a mode in which the BES participates in the flexibility adjustment of the power system according to the difference between the charging and discharging characteristics of the BES; s3, analyzing an optimization strategy of the BES aggregator participating in the flexibility adjustment of the power system, and proposing a battery energy storage capacity optimization configuration model; and S4, calling a Cplex algorithm package on the Matlab provided with the Yalmip optimization toolbox by utilizing the established model according to the flexibility demand distribution obtained by prediction by taking 24 hours of a day as a cycle, and carrying out optimization solution on the Matlab provided with the Yalmip optimization toolbox. The method is high in net load fluctuation prediction efficiency and good in accuracy.

Description

technical field [0001] The invention relates to a method for improving the flexibility of a power system. Background technique [0002] At present, the renewable energy represented by wind energy and solar energy is developing rapidly, and its proportion in the power system is also increasing. The rapid development of renewable energy has alleviated the problems of environmental pollution and energy shortage to a certain extent, but it has also brought some serious problems to the power system. As the proportion of renewable energy in the power generation side of the power system increases, the uncertainty and volatility of the system operation also increase, which brings great challenges to the safe operation of the system. [0003] In order to minimize the negative impact of various uncertain factors, the power system must have a certain ability to adapt and respond, that is, the flexibility of the power system needs to be improved. The power imbalance of the system caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/32G06Q10/04G06Q10/06G06Q50/06
CPCH02J3/00H02J3/003H02J3/32H02J3/008G06Q10/04G06Q10/06315G06Q50/06H02J2203/10H02J2203/20
Inventor 胡嘉骅王洪良兰洲吴航李俊杰王岑峰王坤王一铮张韦维董丹煌周涉宇陈沁语冯昌森
Owner STATE GRID ZHEJIANG ELECTRIC POWER
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