计及高压隔离开关设备的UHVDC系统FTA评估

发布时间：2018-06-12 11:41

本文选题：特高压直流输电 + 高压隔离开关设备　；参考：《电力自动化设备》2017年01期

【摘要】：根据特高压直流输电(UHVDC)系统实际结构建立了横向和纵向故障树分析(FTA)模型,分析了2种模型的差异,基于此构造计及高压隔离开关设备的UHVDC系统FTA模型。采用模块分解法、改进的最小路集(MPS)法解决FTA的非确定多项式(NP)问题。求取了UHVDC可靠性指标。算例分析结果表明:采用所提方法后,FTA的计算量明显降低;与横向建模相比,纵向建模时双极故障、1/2单极运行的概率和故障频率较低、持续时间较短,等效停运小时数较低,能量可用率较高;隔离开关对系统双极故障、单极停运影响最明显,接地开关对其他运行方式影响最明显;旁路开关对1/2双极运行和3/4双极运行有影响;直流转换开关仅对双极故障有明显的影响。
[Abstract]:According to the actual structure of UHVDC system, the horizontal and vertical fault tree analysis (FTAA) models are established, and the differences between the two models are analyzed. The FTA model of UHVDC system is constructed based on this structure, which takes into account the high voltage isolating switchgear. The improved minimum path set (MPS) method is used to solve the non-deterministic polynomial NPs problem of FTA. The reliability index of UHVDC is obtained. The result of example analysis shows that the calculation amount of FTA is obviously reduced after adopting the proposed method, and compared with the horizontal modeling, the probability and frequency of bipolar fault one-to-two monopole operation in longitudinal modeling are lower, the duration is shorter, and the equivalent outage hours are lower. The power availability is high, the isolation switch has the most obvious influence on the bipolar fault, the single pole outage is the most obvious, the grounding switch has the most obvious influence on the other operation modes, the bypass switch has the influence on the 1 / 2 bipolar operation and the 3 / 4 bipolar operation. DC converter switch only has obvious effect on bipolar fault.
【作者单位】：合肥工业大学电气与自动化工程学院;
【基金】：国家自然科学基金资助项目(51277049)~~
【分类号】：TM721.1;TM564.1

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