大规模光伏发电在电力系统动态稳定性的影响研究  

Study on the Impact of Large-Scale Photovoltaic Power Generation on the Dynamic Stability of PowerSystems

作　　者：林发祥 Lin Faxiang(Guodian Nanrui Nanjing Control System Co.,Ltd.,Nanjing Jiangsu 211000,China)

机构地区：[1]国电南瑞南京控制系统有限公司,江苏南京211000

出　　处：《现代工业经济和信息化》2023年第12期287-289,共3页Modern Industrial Economy and Informationization

摘　　要：当前大规模光伏发电接入配电网的分布式电源系统会直接改变配电网络运行及规划方式的改变;并且分布式电源系统会受到潮流变化的影响,为电压源的输出动态稳定性检测和计算带来挑战,导致电力系统的动态稳定性检测产生巨大的误差。针对光伏发电并网导致电力系统动态稳定性受到影响的问题,通过研究交直流网络系统潮流对电力系统动态稳定性的影响,并且根据无功功率判断电压源输出电压的波动方向,研究波动方向与波动范围之间的关系,提出对电力系统动态稳定性检测的方法。通过实验测试该方法在光伏发电并入电力系统动态稳定性检测的准确性。通过对比,该方法检测结果与实际电压源运行数据之间的对比误差较小,具有较高的准确性。For the current large-scale photovoltaic power generation access to the distribution network distributed power system,will directly change the distribution network operation and planning changes.And the distributed power system will be affected by the change of current,which will bring challenges to the detection and calculation of the output dynamic stability of the voltage source,resulting in huge errors in the dynamic stability detection of the power system.To address the problem of grid-connected photovoltaic power generation that causes the dynamic stability of the power system to be affected,the method of detecting the dynamic stability of the power system is proposed by studying the impact of the AC and DC network system currents on the dynamic stability of the power system,judging the direction of fluctuations in the output voltage of the voltage source according to the reactive power,and investigating the relationship between the direction of fluctuations and the range of fluctuations.The accuracy of the method in detecting the dynamic stability of PV power system is also tested through experiments.Through comparison,the error between the detection results of this method and the actual voltage source operation data is small and has high accuracy.

关 键 词：大规模光伏发电 电压源动态稳定性 PWM调制度 潮流分析 无功功率 

分 类 号：TM615[电气工程—电力系统及自动化]