风电场参与西北送端大电网频率调节的快速频率响应能力实测与分析

Measurement and Analysis of Fast Frequency Response Capability of Wind Farms Participating in Frequency Regulation of Northwest Sending-End Large Power Grid

近年来,西北电网新能源快速发展,直流外送规模不断扩大,因新能源机组无一次调频能力,电网频率控制的结构性困境日趋显现,迫切需要新能源机组参与大电网快速频率控制。本文介绍了西北电网试验风电场参与电网快速频率响应典型方案,结合现场试验及2016年西北电网频率特性试验,首次在国内系统性完成了风电场快速频率响应能力实测分析。结果表明,风电场可参与电网快速频率响应,其响应特性与常规电源一次调频相当,具有较好的应用前景。

In recent years,the renewable energy in Northwest Power Grid has experienced fast development,and the HVDC has been sending increasing power to the rest of the country.Due to the fact that the renewable generation units do not have the ability to participate in the primary frequency regulation,the frequency control of large power grid has become an increasingly prominent predicament.It is therefore in desperate need to have renewable generation units participating in the frequency regulation.This paper introduces the typical schemes of the wind farms participating in the system frequency control as tested in the Northwest Power Grid.According to the field tests and the 2016 Northwest Power Grid frequency characteristics tests,this is the first time in our country to conduct a systematic actual measurement and analysis of the fast frequency response capacity of wind farms.The results show that wind farms are able to participate in the fast frequency response of power grid,and they have similar response capability compared to conventional generators.Therefore,it is very promising to implement the control scheme.