可再生能源2018，Vol.36Issue(1)：27-35,9.
网间规模化光伏并网对系统阻尼的影响及优化措施
Study on the influence of large-scale PV grid-connected systems on the oscillation damping characteristics and optimization measures
摘要
Abstract
After large disturbances,there is large fluctuation in the voltage of oscillation center of power grid.Affected by this,photovoltaic grid-connected system adjacent to the oscillation center will appear significant fluctuations,which will increase the interaction between it and the power grid.This paper is based on photovoltaic transient simulation model,in the process of low frequency drop and recovery of grid voltage,the transient power characteristics of photovoltaic connected system is analyzed.According to the equal area principle,when scale PV grid-connected system is under different control modes,the influence of the Us-Bpv trajectories on the oscillation damping is analyzed,and the effect mechanism of photovoltaic system on the oscillation damping is revealed.In this paper,the two-zone four-machine system disturbed time domain simulation is taken as an example.The effectiveness of influence on the system damping evaluated according to the Us-Bpv trajectories characteristic of photovoltaic grid connected system is verified.On this basis,the damping optimization measure of the photovoltaic grid connected system with SVG additional damping control is proposed.关键词
光伏发电/振荡中心/等值电纳/低频振荡/阻尼特性/优化措施Key words
photovoltaic (PV) generation/oscillation center/equivalent susceptance/low-frequency oscillation/damping characteristic/optimization measure分类
能源科技引用本文复制引用
葛星,钟海亮,郑超,张鑫,李惠玲,项丽..网间规模化光伏并网对系统阻尼的影响及优化措施[J].可再生能源,2018,36(1):27-35,9.基金项目
国家电网公司科技项目(XT71-16-044). （XT71-16-044）
