摘要
在云南省积极推动水电铝产业一体化发展的背景下,一大批电解铝项目的集中接入,对电网安全稳定运行造成威胁。本文根据电解铝负荷生产特性,利用PSD-BPA软件搭建云南电网2022年丰大方式下的仿真模型,以砚富断面和大理四线送出断面三相短路故障为例,分析了不同的电解铝负荷模型对云南电网暂态稳定及两个重要断面输电极限的影响。仿真计算结果表明,电解铝负荷使用新的ZIP负荷模型,可提高电网的暂态稳定水平及局部电网断面输电能力,并可避免或减少不必要的切机或切负荷措施,增加向用户供电的可靠性。
Under the background of actively promoting the integrated development of hydropower and aluminum industry in Yunnan Province,lots of electrolytic aluminum loads accessed to several locality power grid and posed a threat to power system stability.According to the production characteristics of electrolytic aluminum load,the simulation model of Yunnan power grid in 2022 is built by using PSD-BPA software.Taking the three-phase short-circuit fault of Dali line 4 transmission section and Yanfu section as an example,the effects of different electrolytic aluminum load models on the transient stability of Yunnan power grid and the transmission limits of two important sections are analyzed.The simulation results show that using the new zip load model for electrolytic aluminum load can improve the transient stability level of power grid and the section transmission capacity of local power grid,avoid or reduce unnecessary machine cutting or load cutting measures,and increase the reliability of power supply to users.
作者
司大军
王文飞
郭洪芹
万航羽
Si Dajun;Wang Wenfei;Guo Hongqin;Wan Hangyu(Yunnan Power Grid Planning&Research Center,Kunming 650011,China;Yunnan Electric Power Design Institute Co.,Ltd.,Kunming 650051,China)
出处
《云南电力技术》
2021年第4期15-20,共6页
Yunnan Electric Power
关键词
电解铝
负荷模型
云南电网
稳定分析
electrolytic aluminum load
load model
Yunnan power grid
stability analysis
