摘要
为了完善和改进频率扫描法在次同步振荡(SSO)分析中的应用,首先详细介绍了频率扫描法的基本原理,然后分析了频率扫描法的两种实现方法,指出串联方法应用相对广泛,更能反映频率扫描法的本质;并联方法较适合于未进行任何等值的单机无穷大系统。最后以PSCAD为平台进行仿真,IEEE第一标准模型的仿真结果表明,频率扫描法所采用的系统等值能够真实反映电气谐振频率,且串并联两种方法均适用于单机无穷大系统;IEEE第二标准模型的仿真结果表明,串联方法适用于多机系统的SSO分析。
In order to improve the application of frequency scanning method to study sub-synchronous oscillation（SSO）, the basic principle of frequency scanning method is introduced firstly,and its two realization methods are analyzed. Then analysis shows that the series method has relatively wide applications,which can better reflect the nature of frequency scanning method,while the shunt method is more suitable for single-machine infinite-bus system without any equivalence calculation.In the end,by the tool of PSCAD, simulation results of IEEE First Benchmark system show that the system equivalence used in frequency scanning method can reflect resonance frequency factually,and both series and shunt methods can be applied to sing-machine and infinite-bus system.The simulation results of IEEE Second Benchmark system show that series method can be applied to analyze the SSO of multiple machines system.
出处
《现代电力》
2011年第5期1-5,共5页
Modern Electric Power
