State Grid Corporation of China

North China Electric Power University

Clp Puri Zhangbei Wind Power Research & Testing Co

China Electric Power Research Institute Company Li

Yuehui Huang

Nan Zhang

Chun Yen Liu

Xiaofei Li

Xiaoyan Xu

Panpan Li

Chi Yang Li

Yanping Xu

Jixian Qu

Weisheng Wang

Cun Dong

Yunfeng Gao

Xiaofeng Pan

Shiwei Xia

Yuefeng Wang

Liangyun Song

An optimal dispatching method and system for a wind power generation and energy storage combined system are provided. Uncertainty of a wind turbine output is characterized based on spatio-temporal coupling of the wind turbine output and an interval uncertainty set. Compared with a traditional symmetric interval uncertainty set, the uncertainty set that considers spatio-temporal effects effectively excludes some extreme scenarios with a very small probability of occurrence and reduces conservativeness of a model. A two-stage robust optimal dispatching model for the wind power generation and energy storage combined system is constructed, and a linearization technology and a nested column-and-constraint generation (C&CG) strategy are used to efficiently solve the model.

Optimal dispatching method and system for wind power generation and energy storage combined system

A method and device for modeling a long-time-scale photovoltaic output time sequence are provided. The method includes that: historical data of a photovoltaic power station is acquired, and a photovoltaic output with a time length of one year and a time resolution of 15 mins is selected (); weather types of days corresponding to the photovoltaic output are acquired from a weather station (), and probabilities of transfer between each type of weather are calculated respectively (); and a simulated time sequence of the photovoltaic output within a preset time scale is generated (), and its validity is verified (). By the method, annual and monthly photovoltaic output simulated time sequences consistent with a random fluctuation rule of a photovoltaic time sequence may be acquired according to different requirements to provide a favorable condition and a data support for analog simulation of time sequence production including massive new energy.

Method and device for modeling a long-time-scale photovoltaic output time sequence

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Beijing, China

Yuehui Huang