CAJ | 학술논문

为科学评估和分析输电设备(线路、变压器)检修及故障停运对输电网规划方案灵活性的影响，提出一种计及输电设备停运率的区间归一化风险指标．定义了反映线路过载和节点电压越限的区间归一化指标；阐述了利用该指标量化评估方案灵活性的方法；给出了基于该指标查找制约方案灵活性的薄弱环节和关键设备的有效方法，以及对规划方案进行改进的实用方法．所提方法可有效反映输电设备停运不确定性及其对线路负载、节点电压变化可能产生的影响，可为规划人员快速确定系统薄弱环节、查找问题原因并形成改进方案提供帮助．IEEE 118节点测试系统算例验证了所提方法的正确性及有效性，波兰电网实际算例系统验证了方法的可行性．
위과학평고화분석수전설비(선로、변압기)검수급고장정운대수전망규화방안령활성적영향，제출일충계급수전설비정운솔적구간귀일화풍험지표．정의료반영선로과재화절점전압월한적구간귀일화지표；천술료이용해지표양화평고방안령활성적방법；급출료기우해지표사조제약방안령활성적박약배절화관건설비적유효방법，이급대규화방안진행개진적실용방법．소제방법가유효반영수전설비정운불학정성급기대선로부재、절점전압변화가능산생적영향，가위규화인원쾌속학정계통박약배절、사조문제원인병형성개진방안제공방조．IEEE 118절점측시계통산례험증료소제방법적정학성급유효성，파란전망실제산례계통험증료방법적가행성．
An interval normalized risk index was proposed to assess and analyzethe effect of transmission facilities failures on the flexibility of transmission expansion plans. This novel flexibility index took into account unavailability of transmission facilities such as overhead lines and transformers. At the beginning,normalized risk indices relating to overload and voltage violation were defined to assess the flexibility of plans. Then they were applied to the detec-tion defects and weak points and the improvement of existing plans. The proposed method can validly measure the potential effects of faulty facilities on line loading and bus voltage,which helps planners to locate defects of the plan-ning transmission network and propose improved projects. The case study based on IEEE 118 bus system demonstrates the validity and the case study based on Polish power network proves the effectiveness of the proposed approach.