State Grid Corporation of China

China Electric Power Research Institute

Clp Puri Zhangbei Wind Power Research & Testing Co

China Electric Power Research Institute Company Li

Weisheng Wang

Nan Zhang

Chun Yen Liu

Yu Lei

Xiaofei Li

Xiaoyan Xu

Guanghui Li

Chi Yang Li

Yanping Xu

Yuehui Huang

Keke Liu

Yuntao Xiao

Junhua Ma

Yunfeng Gao

Yuqi Duan

Yuye Li

Caiyun Gao

Ni Zhen

Shuanglei Feng

Xiaofeng Pan

Liping Gao

Yuefeng Wang

Fangfang Yu

Zixuan Guo

Cun Dong

Guoqing He

A method and system for measuring broadband impedance of a renewable energy power generation device. A voltage disturbance is injected into the renewable energy power generation device by using a disturbance injection device, and three-phase voltage and three-phase current of each of preset measurement points are acquired. Relevant variables before the renewable energy power generation device is decoupled from a measurement device and impedance of a power grid, are calculated according to the three-phase voltage and the three-phase current of each of the preset measurement points. Impedance of the renewable energy power generation device after being decoupled from the measurement device and the impedance of the power grid, is calculated.

Method and system for measuring broadband impedance of renewable energy power generation device

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

Weisheng Wang