三峡电站近区电网电压调节方案

Voltage Regulation of Power Grid Near Three Gorges Power Station

在枯水期小负荷运行方式下,三峡电站近区电网将可能出现电压偏高的现象。分析了三峡电站近区电网无功配置情况,总结了导致电压偏高的原因,提出可通过增加感性无功补偿设备、调整三峡电站机组运行方式和直流系统运行方式进行调压,并分析了3类调压方案的可行性、降压效果及经济性,指出可通过组合方案优化降压效果。

In power grids near Three Gorges power station it is possible to appear slightly higher voltage under light load operation mode in dry season. Based on the analysis on the configuration of reactive compensation devices in power grid near Three Gorges power station, the reasons causing the slightly higher voltage are summarized, and it is pointed out that the voltage of power grid near Three Gorges power station can be regulated by following measures such as increasing inductive reactive power compensation devices, adjusting the operation modes of Three Gorges power station and regulating voltage by adjusting operation modes of HVDC system. In addition, the feasibility, the effect of reducing voltage and economy of the three voltage reduction measures are analyzed, and it is proposed to optimize the effect of reducing voltage the combined measures can be utilized.