CAJ | 학술논문

在以往对配电网可靠性的研究中，通常独立分析配电网，而对配电网与变电站、配电网与主网间的相互关系分析不足，同时对配电网中设备间的共模故障影响研究仍有待加强。为此，从多电压等级配电网主接线运行特性出发，考虑断路器等隔离装置的共模失效特性，提出共模关联设备概念以及扩展最小割集算法，并建立了变电站等效模型，设计了配电网可靠性评估算法，从而实现全电压等级可靠性评估。在此基础上，结合实际电网算例分析了系统的可靠性薄弱环节，评估指标可以更真实地反映实际用户的供电可靠性水平。
재이왕대배전망가고성적연구중，통상독립분석배전망，이대배전망여변전참、배전망여주망간적상호관계분석불족，동시대배전망중설비간적공모고장영향연구잉유대가강。위차，종다전압등급배전망주접선운행특성출발，고필단로기등격리장치적공모실효특성，제출공모관련설비개념이급확전최소할집산법，병건립료변전참등효모형，설계료배전망가고성평고산법，종이실현전전압등급가고성평고。재차기출상，결합실제전망산례분석료계통적가고성박약배절，평고지표가이경진실지반영실제용호적공전가고성수평。
In the past, the researches on reliability of distribution network usually regarded distribution system as an independent network, thus were lack of analyzing the relationship between the distribution network and substations, and that between the distribution network and the main network. Furthermore, the common mode outage of components was still underestimated. Therefore, on the basis of the operating characteristics of multi-level distribution network and considering the common mode failure characteristics of disconnecting switches, the concept of common mode associated component and an extended minimal cut set algorithm were put forward. A substation equivalent model was built, and a reliability evaluation algorithm of urban power grid was designed, on the basis of that, an overall reliability assessment method for power grid was proposed. Taking an actual grid as example, the weakness of case grid was analyzed and the results show that the evaluation index can reflect the power supply reliability level of actual users.