分布式光伏接入对电网电压和网损的影响分析  

Analysis of distributed photovoltaic power influence on grid voltage and power losses

作　　者：陈虎[1] 张田[2] 裴辉明[1] 石巍[1] 张雪焱[3] 

机构地区：[1]新疆电力设计院,乌鲁木齐830001 [2]中国电力工程顾问集团中南电力设计院有限公司,武汉430071 [3]广东省电力设计研究院,广州510663

出　　处：《电测与仪表》2015年第23期63-69,共7页Electrical Measurement & Instrumentation

摘　　要：针对分布式光伏接入电网将产生诸多影响,通过理论推导研究了光伏发电在不同接入位置、不同接入容量时对系统电压以及网损的影响的变化规律,并采用系统电压改善程度、有功损耗改善程度指标来评价分布式光伏发电对系统电压和网损的影响程度。通过某地实际电网的仿真实验,全面总结了光伏在接入位置、出力和布局变化时电压及网络损耗的变化规律,为分布式光伏发电项目的规划设计提供理论基础。It will bring a lot of impacts on distribution system when the distributed photovohaic accesses to the grid. Aimed at the practical problems, through the theoretical derivation, the voltage and power losses of PV power genera- tion systems access to the grid is studied according to two factors including different access locations, different access capacity. The voltage improvement index and active power losses improvement index are adopted to evaluate the PV influence on the system voltage and power losses. Simulation experiment is carried out on the practical grid. The re- suits show the change law of voltage and active power losses when accessing locations, output of PV system are changed, and it provides a theoretical basis for the planning and design of the distributed PV generation projects.

关 键 词：光伏发电系统 PSASP 电压分布 有功损耗 

分 类 号：TM933[电气工程—电力电子与电力传动]