电力系统自动化
電力繫統自動化
전력계통자동화
AUTOMATION OF ELECTRIC POWER SYSTEMS
2013年
22期
28-34
,共7页
电力系统恢复%励磁涌流%前K 最短路径%机组恢复成功率
電力繫統恢複%勵磁湧流%前K 最短路徑%機組恢複成功率
전력계통회복%려자용류%전K 최단로경%궤조회복성공솔
power system restoration%inrush current%K-shortest p aths%success rate of unit restoration
待恢复机组的选择是制订黑启动方案的首要任务。分析了影响黑启动阶段机组成功恢复的主要因素，其中重点分析了变压器空载投入时励磁涌流引起的黑启动机组机端电压波形畸变的影响。在此基础上，定义了线路权重、变压器权重和辅机权重，提出了黑启动阶段机组恢复成功率的概念。综合考虑机组恢复成功率和机组容量等因素，对黑启动阶段待恢复机组进行优选。为了减小计算量，首先从所有待恢复机组中筛选部分机组作为寻优集合，并使用前K 最短路径算法搜索寻优集合中机组的可选恢复路径。山东电网实际仿真证明了定义的机组恢复成功率的有效性和所述方法的快速性。
待恢複機組的選擇是製訂黑啟動方案的首要任務。分析瞭影響黑啟動階段機組成功恢複的主要因素，其中重點分析瞭變壓器空載投入時勵磁湧流引起的黑啟動機組機耑電壓波形畸變的影響。在此基礎上，定義瞭線路權重、變壓器權重和輔機權重，提齣瞭黑啟動階段機組恢複成功率的概唸。綜閤攷慮機組恢複成功率和機組容量等因素，對黑啟動階段待恢複機組進行優選。為瞭減小計算量，首先從所有待恢複機組中篩選部分機組作為尋優集閤，併使用前K 最短路徑算法搜索尋優集閤中機組的可選恢複路徑。山東電網實際倣真證明瞭定義的機組恢複成功率的有效性和所述方法的快速性。
대회복궤조적선택시제정흑계동방안적수요임무。분석료영향흑계동계단궤조성공회복적주요인소，기중중점분석료변압기공재투입시려자용류인기적흑계동궤조궤단전압파형기변적영향。재차기출상，정의료선로권중、변압기권중화보궤권중，제출료흑계동계단궤조회복성공솔적개념。종합고필궤조회복성공솔화궤조용량등인소，대흑계동계단대회복궤조진행우선。위료감소계산량，수선종소유대회복궤조중사선부분궤조작위심우집합，병사용전K 최단로경산법수색심우집합중궤조적가선회복로경。산동전망실제방진증명료정의적궤조회복성공솔적유효성화소술방법적쾌속성。
The primary task of making a black start plan is to select the to-be-restored unit.The main factors which have an impact on unit restoration are analyzed,especially the terminal voltage waveform distortion of black start unit caused by inrush current when no-load transformers are switched on.Based on the above analysis,the line weight,transformer weight and auxiliary motor weight are defined and the concept of success rate of unit restoration is proposed.The success rate of unit restoration and the capacity of units are considered to select the optimal to-be-restored unit during the black start stage.To reduce the computation burden,several units are selected as a candidate set,whose restoration paths are obtained by the algorithm of K-shortest paths.Simulation results of Shandong power grid show the effectiveness of the success rate of unit restoration and the rapidity of the proposed method.
