适用双回线路的UPFC可靠性评估
Reliability Evaluation of UPFC for Dou-ble-Circuit Lines
DOI: 10.12677/SG.2018.81004, PDF,   
作者: 林哲敏*, 毛 荀, 张旭昶, 李宾宾：国网安徽省电力公司电力科学研究院，安徽 合肥；胡 骞, 韩平平：合肥工业大学，安徽省新能源利用与节能重点实验室，安徽 合肥
关键词: 统一潮流控制器；可靠性；优化四状态模型；分层等值；状态空间；The Unified Power Flow Controller (UPFC)； Reliability； Optimized Four State Model； Hierarchical Equivalence； State Space
摘要: 统一潮流控制器(UPFC)是重要的第三代柔性交流输电设备，可以全面的优化电力系统潮流，影响电网可靠性。考虑到传统UPFC三状态可靠性模型未顾及换流器单独运行的状态、四状态模型未考虑UPFC的实际应用结构，提出了一种优化的四状态模型。该模型考虑了双回UPFC三台换流器互为备用的结构，以及内部故障时优先保障实现静止同步串联补偿器(static synchronous series compensator, SSSC)功能的原则，提高了系统对UPFC的利用率以及UPFC的可靠性。利用状态空间法和分层等值思想计算UPFC实现各个状态的能力，并在合肥南部分区电网实例中验证了UPFC四种运行状态对系统可靠性的影响。
Abstract: The unified power flow controller (UPFC) is an important third generation of flexible AC transmission equipment which can comprehensively optimize the power flow and influence the reliability of power grid. Considering the traditional 3-state model of UPFC ignores the independent operation of the converters, while the 4-state model does not take account of the practical application structure of UPFC, an optimized four state model is proposed. Taking into account the three converter mutual backup structure, and the principle of priority to ensure the realization of static synchronous series compensator (SSSC) function while internal fault occurs, the model improves the system utilization rate of UPFC as well as UPFC’s reliability. The ability of UPFC to achieve various states is calculated by the state space method and the hierarchical equivalence theory. The influence of UPFC four operation states on the system reliability is verified in the example of Hefei Southern sub area power grid.
文章引用：林哲敏, 胡骞, 毛荀, 张旭昶, 李宾宾, 韩平平. 适用双回线路的UPFC可靠性评估[J]. 智能电网, 2018, 8(1): 25-33. https://doi.org/10.12677/SG.2018.81004

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