浅析承德电网并网风电电压异常波动

承德地区并网风电场大规模集中开发于电网末端,具有远离负荷中心、网架结构薄弱、送出距离长等特点,致使风电场节点电压波动异常敏感。文章从风电场调整主变分接头、投切电容器、风机低电压脱网、空投变压器4个方面对电压异常波动进行了初步分析。

Brief Analysis on Abnormal Voltage Fluctuations in Wind Farms in Chengde Grid

In recent years,large-scale wind farms are introduced into Chengde power grid.These wind farms are located far from load centers,where power grid is relatively weak.Moreover,electricity generated by these wind farms needs to be transmitted to power grid via long distance lines.All above factors contribute to the fact that wind farms are extraordinarily sensitive to voltage fluctuations.In this work,abnormal voltage fluctuations caused by switching transformer taps,switching capacitors,low-voltage off-grid of wind turbine and charging non-load transformers are briefly analyzed.