基于状态转移的高压直流输电系统可靠性分析

发布时间：2018-01-08 18:32

本文关键词：基于状态转移的高压直流输电系统可靠性分析　出处：《高压电器》2015年12期 　论文类型：期刊论文

【摘要】：高压直流输电系统设备较多,连接关系复杂,影响可靠性水平的因素很多。在深入研究了高压直流输电系统各个设备连接关系以及功能基础上,基于网络法建立高压直流输电系统故障逻辑图,探讨了高压直流输电系统单极故障和双极故障的判别方式,分析高压直流输电系统复杂的状态转移关系,得到高压直流输电系统的状态空间转移图。采用混合法将非时序蒙特卡罗法和频率持续时间法结合:通过非时序蒙特卡罗模拟得到高压直流输电系统各个运行状态概率,结合状态空间转移图中的转移关系,应用频率和持续时间法得计算到频率和持续时间指标,避免了高压直流输电系统复杂的状态转移图导致的"维数灾"问题。算例计算验证了该方法的有效性和正确性,进而对算例系统进行了换流器桥臂故障率的灵敏度分析及不同主设备备用措施对可靠性影响的分析。
[Abstract]:There are many factors that affect the reliability level of HVDC transmission system, such as more equipment, complex connection relationship and many factors. Based on the in-depth study of the connection relationship and function of each equipment of HVDC transmission system. Based on the network method, the fault logic diagram of HVDC system is established, and the distinguishing mode of unipolar fault and bipolar fault of HVDC system is discussed, and the complex state transition relationship of HVDC system is analyzed. The state space transfer diagram of HVDC system is obtained, and the hybrid method is used to combine the non-sequential Monte Carlo method and the frequency duration method. The probability of each operation state of HVDC system is obtained by non-sequential Monte Carlo simulation. Combined with the transition relation in the state space transition graph, the index of frequency and duration is calculated by using the method of frequency and duration. The problem of dimensionality disaster caused by complex state transition diagram of HVDC transmission system is avoided. The validity and correctness of this method are verified by an example. Then, the sensitivity analysis of fault rate of converter bridge arm and the influence of different main equipment standby measures on reliability are carried out.
【作者单位】：南方电网科学研究院有限责任公司;西安交通大学电力设备电气绝缘国家重点实验室;国网江苏省电力公司经济技术研究院;国网陕西省电力公司经济技术研究院;
【基金】：国家高技术研究发展计划(863计划)资助项目(2012AA050201)~~
【分类号】：TM721.1
【正文快照】： Reliability Analysis of HVDC Transmission System Based on State TransitionLI Rongrong1,CHEN Xi2,3,WU Yanlin4,JIN Xiaoming1(1.Electric Power Research Institute,CSG,Guangzhou 510080,China;2.State Key Laboratory of Electrical Insulation forPower Equipment,X

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