在原先提出的一种新的开关函数正负半波分解方法的基础上 ,利用等效开关函数的概念 ,使得在上下电容电压相等的条件下 ,开关函数仍具有统一的表现形式 ,简化了静止无功发生器(SVG)的建模。推导出了 SVG的时域模型 ,并在频域内获得了 SVG输出有功电流、无功电流和直流电容电压的响应时间与 SVG参数间的关系 ,并得到了仿真结果的验证。 Based on the original method of positive and negative half-wave decomposition of the switch function, the concept of equivalent switch function is used to make the switch function still have a uniform representation under the condition that the upper and lower capacitor voltages are equal, which simplifies the static Modeling of reactive generator (SVG). The time domain model of SVG is deduced and the relationship between SVG output active current, reactive current and DC capacitor voltage response time and SVG parameters is obtained in the frequency domain, and the simulation results are validated.