State Grid Corporation of China

Gansu Electric Power Corporation Wind Power Technology Center

North China Electric Power University

State Grid Gansu Eletric Power Corporation

State Grid Gansu Electric Power Corporation

Cai Liang

Qiang Zhou

Long Zhao

Ningbo Wang

Jin Li

Yanhong Ma

Dan Jin

Wenying Liu

Jiaming Wang

Rundong Ge

Peng Xu

Kun Ding

Bin Yang

Shiyuan Zhou

Rong Huang

Xiaodan Wu

Zilan Zhao

Yalong Li

Jing Wen

The present invention has disclosed an optimal control method for reactive voltage of wind power and photovoltaic power centralized grid connection in the field of wind power and photovoltaic power grid connection control technology, comprising: setting actuating stations used to control single wind power plant/photovoltaic power plant, setting substations used to control actuating stations and set master station used to control all the substations; master station calculates setting voltage reference Uof each substation; adopting 3&#x3c3; method to process set voltage reference Uto obtain set voltage reference interval; regulating high-side voltage of substation to make it fall in set voltage reference interval; if high-side voltage of substation does not fall in set voltage reference interval, then regulating the equipment in wind power plant/photovoltaic power plant via actuating station. The present invention guides the actual operations of electric power system.

Optimal control method for reactive voltage of wind power and photovoltaic power centralized grid connection

The present invention has disclosed a wind power bundling control method after wind power and thermal power are connected to a power grid in the field of electric power system security technology, including regulating wind power output and thermal power output forward or backward; calculating the transient stability margin of the grid, load level index of element and voltage out-of-limit index of busbar after regulating wind power output and thermal power output respectively; calculating wind power/thermal power paying value according to the transient stability margin of the grid, load level index of element and voltage out-of-limit index of busbar after regulating wind power output and thermal power output; if wind power/thermal power paying value is larger than set threshold value, regulating wind power output and thermal power output backward/forward; if wind power/thermal power paying value is smaller than set threshold value, regulating wind power output and thermal power output forward/backward. The present invention provides a wind power bundling control method after wind power and thermal power are connected to the power grid to ensure reasonable output of wind power and thermal power, so as to guarantee the power grid operates normally.

Wind power bundling control method after wind power and thermal power are connected to grid

Growing community of inventors

Lanzhou, China

Cai Liang