计及静止同步串联补偿器的线路P-Q曲线电压稳定分析  

Voltage Stability Analysis Based on Calculation of P-Q Curve of Power System With Static Synchronous Series Compensator

作　　者：李国庆[1] 杨宏伟[1] 于紫南[1] 

机构地区：[1]东北电力大学电气工程学院,吉林省吉林市132012

出　　处：《电网技术》2012年第5期258-262,共5页Power System Technology

摘　　要：提出了一种新的静止同步串联补偿器(staticsynchronous series compensator,SSSC)的恒功率控制模型,并将此模型运用于电力系统潮流计算中。仿真计算了IEEE-14节点系统在安装SSSC前后的有功、无功损耗变化;在线路的P-Q约束条件下,推导了一种新的基于线路P-Q曲线的电压稳定计算公式,得出了相应的电压稳定指标,计算分析了SSSC安装前后对电压稳定的影响。通过仿真和计算分析可以得到,安装SSSC后能明显地改善系统的电压稳定。与其他方法相比,文中所提方法具有快速简洁的优点,进而具备一定的实际应用价值。A new constant power controller model for static synchronous series compensator （SSSC） is proposed and applied to power flow calculation. Taking IEEE 14-bus system for example, the change of active and reactive power loss before and after the installation of SSSC is simulated. Under the P-Q constraints, a new formula to calculate steady state voltage stability, which is based on P-Q curve of transmission line, is deduced and corresponding voltage stability index is obtained. The impacts of SSSC on voltage stability before and after its installation are calculated and analyzed. Results of simulation and calculation show that power system stability can be evidently improved after the installation of SSSC. The proposed method is faster and succinct than other methods, so it is practicable.

关 键 词：静止同步串联补偿器 潮流计算 P-Q曲线 电压 稳定 

分 类 号：TM711[电气工程—电力系统及自动化]