洪家渡水电站在梯级和电网中的地位与作用

洪家渡是乌江干流梯级中唯一具有多年调节库容的水电站.该电站在提高乌江梯级水电站保证出力、减少下游梯级电站弃水调峰,以及提高贵州电网火电机组负荷率方面作用巨大.电站建成后,可使东风、乌江渡水电站6～10月的平均出力减小67.4MW;减少这两个电站的弃水调峰电量损失约2.15亿kW*h;可增加的高峰电量及枯期电量,均占电量增量的43%左右;使电网中的火电机组年利用小时数提高约120h.

Position and role of Hongjiadu Hydropower Station in the cascade development and power network

The Hongjiadu Hydropower Station is a unique hydropower station with overyear storage in the cascade development in the main stream of the Wujiang River. It plays huge role in enhancing the firm output of Wujiang cascade hydropower stations, reducing the water releasing volume for peaking in the downstream cascade hydro stations in Guizhou Power System. After the completion of the Hongjiadu Hydropower Station, it can reduce the average output of 67.4 MW of the Dongfeng and Wujiang hydropower stations from June to October. It can reduce about 215 million kWh of the power loss of releasing water for peaking and can increase its power volume during peak and low water period, making up about 43% of the increased power volume respectively. It can make the annual utilization hour of the thermal power generating units in the power system increase by about 120 hours.