抽水蓄能电站发电调相运行至发电运行控制策略

抽水蓄能电站一般都具有同步调相运行的能力,但抽水蓄能机组的全特性曲线上却有一个不稳定区,容易引起工况转换失败,且在快速转换时,机组将产生有害的起始逆功率,进而产生有害的电网电压和频率下降.文中根据抽水蓄能机组的水力特性,对机组控制流程进行研究和优化,以尽可能避开运行不稳定区域,提高机组运行的稳定性,并减少逆功率.

Control Strategy from Phase Modulation to Power Generation for Pumped Storage Power Stations

A pumped storage power station has the capability of phase modulation. However, there is an unstable region in the complete characteristic curve of the pumped storage power unit, and it may result in failure of conversion of operating conditions. Besides, during fleet conversion, the unit will generate harmful reverse power, which may lead to the decline of voltage and frequency of the power grid. Based on the waterpower characteristics of pumped storage power units, the unit control sequence is researched and improved, so as to avoid the unstable region, improve the stability of unit operation and reduce the reverse power.