由于电网的黑启动要求,对现有的互为暗备用方式的厂用电系统进行改造,与自备防洪柴油发电相配合,厂用电系统接线方式改为环形接线方式,应用可编程控制器实现了复杂的厂用电系统自投控制,为机组黑启动成功提供了可靠的技术保证,对水电厂充分利用现有资源及自动控制技术提高厂用电供电的可靠性提出了一种解决方案。 Due to the black-start requirements of the power grid, the existing power system of the plant, which is a dark standby mode, is to be rebuilt. With the cooperation of the self-provided flood control diesel power generation, the connection mode of the power system of the plant is changed to the ring connection mode, and the programmable controller It realizes the complicated automatic control of the power supply system of the plant and provides a reliable technical guarantee for the success of the black start of the unit. A solution is proposed to make full use of the existing resources and automatic control technology to improve the reliability of the power supply for the plant .