基于分布式发电与SVG优化配置的调压方法

Voltage regulation based on allocation optimization of distributed generation and SVG

将静止无功发生器(SVG)引入到含有分布式发电的配电网中来调节电压。基于链式均匀配电网络、恒功率静态负荷模型和分布式电源的功率模型,采用叠加原理,分别考虑系统电源和分布式电源对配电网电压的作用,给出了分布式发电引入配电网后电压分布的计算方法。通过该方法,计及允许偏差,推导出分布式发电投入与退出后的电压调节理论判据。在分布式发电投入与退出2种情况下,分别以电压处于允许电压偏差范围内为目标和以降低线损为目标,计算出了SVG的接入位置和容量,最后利用分布式发电与SVG优化配置调节配电网电压。仿真算例表明:该方法计算简便、中间步骤少、效果明显。

SVG（Static Var Generation） is introduced to distribution network with distributed generation for voltage regulation. A calculation method of voltage profile for distribution system with distributed generation is proposed,which is based on the uniform distribution network,applies the static load model with constant power and the distributed source model,adopts the superposition theorem,and considers the effects of system source and distributed source on the voltage of distribution network respectively. With the consideration of the allowable voltage deviation,the voltage regulation criterions for distribution network with and without distributed generation are deduced by this simplified method. The capacity and location of SVG are calculated respectively with voltage and line loss as its objective. The allocation optimization of distributed generation and SVG for voltage regulation is presented. Simulative results show that the method is simole and effective.