摘要
结合电力系统中普遍应用的离线计算和准实时控制方案,以及超实时预测和控制方案,提出了暂态功角稳定和暂态电压稳定视角下的离线、准实时和超实时重合时序整定策略。超实时整定策略根据广域测量系统(WAMS)提供的故障线路两端断路器跳闸后的实测受扰轨迹,采用最小二乘法对导纳参数进行在线辨识,实现对导纳阵的实时跟踪,用其来预测重合闸的功角和母线电压变化轨迹,提高预测精度,从而得到优化的重合时序方案。数字试验表明该策略正确、有效。
Combined with the off-line and quasi-real-time control scheme widely applied in the second defensive line of power system in China and the super-real-time prediction and control scheme with wide application prospect,a setting strategy of off-line,quasi-real-time and super-real-time reclose sequence is proposed in the view of transient angle and voltage stability.Based on the disturbed trajectory measured at both terminals by WAMS（Wide Area Measurement System） after the breaker trip,the super-real-time setting strategy applies the least square method to online identify the admittance parameters,implements the realtime tracking of admittance matrix,predicts the reclose angle and bus voltage change trajectory with higher precision,and optimizes the reclose sequence scheme.Digital test verifies its correctness and effectiveness.
出处
《电力自动化设备》
EI
CSCD
北大核心
2012年第11期1-6,共6页
Electric Power Automation Equipment
基金
国家自然科学基金资助项目(50977039
50847043
51007035
90610024
50467002
50347026)
云南省自然科学基金资助项目(2005F0005Z
2009ZC016M)
云南省教育厅基金重点资助项目(2010Z105)~~
关键词
电力系统
暂态稳定
暂态分析
重合时序
准实时
稳定性
electric power systems
transient stability
transient analysis
reclose sequence
quasi-real-time
stability
