区域电网水电黑启动试验分析

Analysis of Hydropower Black Start Test in Regional Power Grid

对某区域电网利用常规水电机组实施电网黑启动的试验过程进行论述,对黑启动试验的发电机空充线路、长线路空充主变压器、火电厂大功率辅机启动、火电机组并网等过程的实测数据进行了分析。试验结果表明,该黑启动系统不会出现发电机自励磁现象,系统工频过电压和操作过电压均在合格范围内,系统电压和频率波动范围未超出规定限值,实测数据与仿真结果基本相符,黑启动系统能够带负荷稳定运行,该黑启动方案切实可行。

The black start test process of a regional power grid using conventional hydropower units is discussed in detail.The measured data of generator charging idle⁃load line,long line charging idle⁃load transformer,high⁃power motor startup of thermal power plant and grid connection of thermal power units in black start test are analyzed.The test shows that the black start system will not cause generator self⁃excitation,the system power frequency overvoltage and operating overvoltage are within the qualified range,the system voltage and frequency fluctuation range will not exceed the specified limit,the measured data are basically consistent with the simulation results,the black start system can operate stably with load,and the black start scheme is feasible.