摘要
当前对于风、光发电的运行特性的研究,主要采用理想的微电网模型,而实际运行的山区规模较小的风、光发电机组,多运行在缺少足够储能设备等有限条件下。为此研究缺少储能条件的山区光、风发电的运行特性,重点分析风、光微电网孤岛初期的幅频变化情况。首先研究光伏发电的并网模型,仿真不同本地源荷容量比情况下的幅频特性,并阐述了所产生幅频现象的形成机理;接着探讨双馈风力发电机(doubly fed induction generator, DFIG)风电的孤岛初期的幅频变化,发现单DFIG风电孤岛容易出现系统崩溃的情况;最后分析风光互补形成的微电网孤岛初期的幅频变化情况。研究结果表明,风、光互补具有更好的运行稳定性。
Current research on operating characteristics of wind and solar power generation mainly uses the ideal microgrid model, but those small scale wind and solar generators actually operating in mountainous areas almost operate under limited conditions of lacking sufficient energy storage equipment. Thus, this paper studies operating characteristics of wind and solar generation in mountainous areas lacking energy storage and analyzes variation of initial amplitude-frequency of wind and solar isolated island. It firstly studies the grid-connected model of photovoltaic generation, makes simulation on amplitude-frequency characteristics under different local source to charge ratio and states formation mechanism of producing amplitude-frequency. Then it discusses variation of amplitude-frequency in initial isolated island period of the doubly fed induction generator (DFIG) wind power and discovers that the single DFIG wind power island is prone to run away. Finally, it analyzes variation of amplitude-frequency during initial stage of wind and solar interaction.
作者
徐兴发
陈志峰
王智东
沈娜
郭长兴
林涛
张紫凡
XU Xingfa;CHEN Zhifeng;WANG Zhidong;SHEN Na;GUO Changxing;LIN Tao;ZHANG Zifan(Shaoguan Power Supply of Guangdong Power Grid Co., Ltd., Shaoguan, Guangdong 512026, China;School of Electrical Engineering, Guangzhou College of South China University of Technology,Guangzhou,Guangdong 510800, China)
出处
《广东电力》
2019年第5期22-28,共7页
Guangdong Electric Power
基金
广东电网有限责任公司科技项目(GDKJXM20162071)
关键词
风光发电
微电网
孤岛
幅频特性
wind and solar power generation
microgrid
isolated island
amplitude frequency characteristic
