摘要
通过对含静止无功补偿器(static var compensator,SVC)的单机无穷大(single machine infinite-bus,SIMB)系统进行电磁转矩计算,从理论上分析SVC的电压控制和阻尼调节之间的相互作用关系,既要保证同时为系统提供正的同步转矩和阻尼转矩,电压控制增益和阻尼控制增益的取值需满足一定的限制关系。通过对PSASP中36节点系统进行特征值分析,从广义阻尼的角度分析SVC控制参数对系统阻尼的影响。分析结果表明,电压控制增益和时间常数可改变系统的总阻尼,阻尼控制增益只能对系统的阻尼特性进行重新配置,从而改善系统的弱阻尼区间振荡模式。仿真验证了上述结论的有效性。
Dynamic interaction between voltage and damping control loops of static var compensator （SVC） controller was studied by computing the electromagnetic torque in a single machine infinite-bus （SIMB） power system. It is revealed that voltage and damping control gains of SVC are interrelated in restriction of each other in order to get positive synchronous torque and damping torque simultaneously. The influence of SVC controller parameters on the system damping of the 36-bus system presented in PSASP program was also analyzed by the eigen-value theory. The conclusion is that the voltage control gain and time constant can impact the system damping, but damping control gain can only vary the damping characteristic of the power system for improving some low damp oscillation modes. The time domain simulation results validated the conclusion.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2008年第1期12-17,共6页
Proceedings of the CSEE
基金
国家重点基础研究专项经费项目(2004CB217907)
国家自然科学基金项目(50595412)。~~
关键词
电磁转矩
阻尼
静止无功补偿器
振荡模式
electromagnetic torque
damp
static vat compensator
oscillation mode
