负荷主动响应应对特高压受端电网直流闭锁故障的探讨

发布时间：2018-01-06 22:17

本文关键词：负荷主动响应应对特高压受端电网直流闭锁故障的探讨　出处：《电力系统自动化》2016年18期 　论文类型：期刊论文

【摘要】：特高压直流输电线路因其输电容量巨大,一旦发生闭锁故障,受端电网输入功率严重缺失,将给电网运行带来巨大冲击,目前的常规调度手段可能会切除大量负荷。频率响应负荷能够在频率偏低时快速主动减少用电或退出用电;电压响应负荷可通过母线电压的主动调整来改变负荷有功大小,帮助电网快速实现功率平衡。通过对频率响应负荷和电压响应负荷调节能力的事前评估和事中统计,并与拉限电策略的在线协调优化,可以减少事故情况下的负荷切除量。发电资源和负荷资源的统一调度可提高特高压直流故障后受端电网的频率稳定水平,仿真结果表明了发电和负荷协同调度策略的有效性。
[Abstract]:UHV DC transmission lines due to its huge transmission capacity, once the lock failure, serious lack of power input end power grid, will bring huge impact to the power system operation, the conventional scheduling method at present may remove a lot of load. The frequency response in low frequency load can quickly reduce the electricity or withdraw from active power load; voltage response can take the initiative to adjust the bus voltage to change the load size, the rapid implementation of the power balance. In response to help power grid load and voltage load response ability to adjust frequency prior assessment and unification of things, and the online optimization and coordination of restrictions on electricity strategy, can reduce the accident situation. Load shedding unified scheduling of resources and power the load power grid by the end of the level to improve the frequency stability of UHV DC fault, the simulation results show that the generation and load scheduling policy coordination A little effectiveness.

【作者单位】：国网苏州供电公司;中国电力科学研究院(南京);
【基金】：国家电网公司科技项目“‘源-网-荷’动态交互仿真模拟技术研究及系统开发”~~
【分类号】：TM73;TM75
【正文快照】： 上网日期:2016-08-02。0引言“十二五”期间,国家大规模开发四川水电,并通过建设复奉、锦苏和宾金三大特高压直流工程,从四川向华东输送清洁水电,对华东地区节能减排发挥了不可替代的作用。但因其单体设备输送容量巨大,一旦发生故障将对受端华东电网运行带来巨大的冲击。不同

【相似文献】