电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
POWER SYSTM PROTECTION AND CONTROL
2014年
8期
28-33
,共6页
冯树海%於益军%王礼文%石飞%汤必强
馮樹海%於益軍%王禮文%石飛%湯必彊
풍수해%어익군%왕례문%석비%탕필강
电力系统%短路电流%拓扑调整%阻抗矩阵%补偿法
電力繫統%短路電流%拓撲調整%阻抗矩陣%補償法
전력계통%단로전류%탁복조정%조항구진%보상법
power system%short-circuit current%topology adjustment%impedance matrix%compensation method
传统的适用于电网运行方式调整的短路电流计算方法耗时太长,无法满足电网快速分析决策的需求。在此背景下,提出了适用于电网拓扑调整的短路电流快速计算方法。该算法基于节点阻抗矩阵,采用补偿法分析发电机停运、线路开断和线路出串运行导致的阻抗矩阵变化,并在此基础上给出了适用于电网拓扑调整的短路电流快速计算流程。针对不同节点规模的实际系统的仿真算例表明,所提出的方法计算速度快,计算结果准确可靠,能够满足大电网方式调整优化对短路电流计算的要求。该方法可以为电网短路电流限制策略分析提供技术支撑。
傳統的適用于電網運行方式調整的短路電流計算方法耗時太長,無法滿足電網快速分析決策的需求。在此揹景下,提齣瞭適用于電網拓撲調整的短路電流快速計算方法。該算法基于節點阻抗矩陣,採用補償法分析髮電機停運、線路開斷和線路齣串運行導緻的阻抗矩陣變化,併在此基礎上給齣瞭適用于電網拓撲調整的短路電流快速計算流程。針對不同節點規模的實際繫統的倣真算例錶明,所提齣的方法計算速度快,計算結果準確可靠,能夠滿足大電網方式調整優化對短路電流計算的要求。該方法可以為電網短路電流限製策略分析提供技術支撐。
전통적괄용우전망운행방식조정적단로전류계산방법모시태장,무법만족전망쾌속분석결책적수구。재차배경하,제출료괄용우전망탁복조정적단로전류쾌속계산방법。해산법기우절점조항구진,채용보상법분석발전궤정운、선로개단화선로출천운행도치적조항구진변화,병재차기출상급출료괄용우전망탁복조정적단로전류쾌속계산류정。침대불동절점규모적실제계통적방진산례표명,소제출적방법계산속도쾌,계산결과준학가고,능구만족대전망방식조정우화대단로전류계산적요구。해방법가이위전망단로전류한제책략분석제공기술지탱。
The traditional method of the short-circuit current calculation, which is used for the operation mode arrangement, costs too much time. It cannot meet the demand of fast analysis and decision-making. Therefore, a fast algorithm of short-circuit current calculation that is applicable to the grid topology adjustment is put forward. Based on the node impedance matrix and compensation method, it can analyze the changes of impedance matrix caused by the generator outage, line outage and line out series, and based on which the calculation procedure is given. The performance of the proposed method is demonstrated by tests on several real power systems. The simulation results show that the proposed method is fast and accurate, and it can meet the demand of the operation mode arrangement of large-scale power systems. Furthermore, this method is able to provide the technical support for the measure analysis of the short-circuit current limitation.