摘要
根据云广直流孤岛运行的实际情况,提出了适用于孤岛运行的稳定判据;对孤岛运行的静态电压稳定问题进行了分析,提出了适用于孤岛运行的静态电压稳定裕度指标,计算了典型方式的稳定极限和稳定裕度;对线路、机组等元件N?1、N?2和多重严重故障下系统的响应进行了分析,掌握了孤岛系统暂态电压稳定和频率稳定的规律;提出了提高孤岛系统稳定性的措施建议。
Firstly,according to the especial status of the islanded operation of Yunnan-Guangdong UHVDC,special stability criteria are proposed for the islanded operation.Secondly,static voltage stability problems are analyzed,static voltage stability margin index is presented,and stability limits and margins are calculated for typical islanded operation conditions.Thirdly,system responses of the islanded system to N-1,N-2,and other severe faults of lines and generators are studied and its transient voltage and frequency stability characteristics are generally discovered.Finally,suggestions on stability enhancement and security operation for islanded operation are proposed.
出处
《南方电网技术》
2010年第A01期7-12,共6页
Southern Power System Technology
关键词
云广直流
孤岛运行
电压稳定
频率稳定
稳定判据
稳定裕度
Yunnan-Guangdong UHVDC
islanded operation
voltage stability
frequency stability
stability criteria
stability margin
