新疆电网采取集中切负荷出现的特殊问题的思考

Thinking of Special Issues Occurring after Concentrated Load Rejection in Xingjiang Power Grid

切机、切负荷功能作为电网发生故障时,是保证电网安全稳定运行的重要措施,它发挥着重要的作用,尤其是切负荷功能,这在很多大区电网的区域稳定控制系统中被广泛采用,但是对于特殊的电网系统,切负荷功能虽然在保证频率稳定、电压稳定起到了很大的作用,消除故障后受端系统的不稳定问题,但同时也带来了新的问题——高电压引起的问题,需要进行研究分析。在总结了新疆电网稳控系统切负荷措施之后,对局部地区切负荷出现的特殊电压问题进行了深入分析研究,提出了相关的技术措施。

Switching off generator or load rejection works as an important function to ensure the safe and stable operation of power grid when power grid runs improperly. Especially, load rejection is widely adoptded in stabilization control system of region grid. Whereas for special grid system, load rejection can ensure the steady frequency and voltage, and clear the unstable problem in the receiving end of power system after the fault, but it brings on a new issue high voltage which needs alalyzing deeply. The load rejection measures are summarized in stabilization control technique of Xinjiang Power Grid, the special voltage issue occurring in load rejection for partial area is analyezed deeply and the related technical measures are put forwad.