摘要
该文将柔性直流输电系统应用于海上油田群孤立电网中,结合海上电网为孤立配电网络且电动机负载比例高等特点,采用电力系统分析软件PSCAD仿真分析了送端交流系统故障、受端交流系统故障、单回直流故障闭锁和大型电动机启动等故障和扰动的动态特性。仿真结果表明,海上油田群柔性直流输电系统中需提高装置的低电压穿越能力,减少故障闭锁时间并配置必要的快速无功补偿设备,以保障电网稳定性。
This paper presents the application of VSC-HVDC transmission system to isolated offshore oil field power grid. Characteristics of offshore power grid such as isolated pow- er distribution network and high load ratio of motors are thoroughly considered. Simulation based on PSCAD is employed to analyze the effects of faults and disturbances like fault of sending and receiving end of AC system, single DC loop fault lockout and large motor starting etc. Simulation results show that the low voltage ride-through ability of flexible DC transmission system in offshore oil field needs to be enhanced, thus reducing fault lockout time. The right rapid reactive-load compensation equipment is required to guarantee the power grid stability.
出处
《中国海洋平台》
2015年第3期54-60,共7页
China offshore Platform
