Problem Analysis and Simulation Research of Voltage Quality of Rural Power Grid in High-Altitude Remote Areas

doi:10.3969/j.issn.1008-0198.2022.03.003

Abstract

Abstract: The Yunnan-Guizhou Plateau of China is mostly poor areas, and most of these areas are based on large power grids + small hydropower power supply grids, which are at the end of the distribution network, and does not meet the N-1 reliability configuration, the problem of voltage unqualified is very prominent. In this paper, the voltage quality problem of a rural power grid in the Yunnan-Guizhou Plateau is studied, and the problem of high and low voltage of power supply lines is explored in depth based on the actual operation of the local power grid, and the main influencing factors of the voltage rise and fall of distribution lines are analyzed. Based on this, in order to solve the problem of power supply voltage quality of rural power grid in this region, this paper proposes a method for establishing a small microgrid + energy storage in combination with the current situation of the local power grid, and with the help of Matlab/Simulink simulation software, a simulation analysis model of rural distribution network is established, which is further verified, and the feasibility of the solution proposed in this paper is verified through simulation analysis, which provides certain theoretical support for enhancing the power supply capacity of the local power grid and improving the reliability of power supply.

Key words: rural power grid, voltage drop, steady-state model, microgrid

CLC Number:

TM712

JIANG Liqing, YANG Jindong, YANG Yanjun, ZHANG Min, WU Shaopeng, HE Zhiquan, RONG Fei. Problem Analysis and Simulation Research of Voltage Quality of Rural Power Grid in High-Altitude Remote Areas[J]. Hunan Electric Power, 2022, 42(3): 13-19.

References

[1] 邱志鹏,吕平,张健,等.配电网居民客户端低电压治理方案探讨[J].供用电,2015,32(11): 75-78.
[2] 王立地,孟晓芳,王俊,等.分布式电源在农村电网低电压治理中的应用[J].供用电,2016,33(7): 23-27.
[3] 陈珩.电力系统稳态分析(第四版)[M].北京:中国电力出版社,2015.
[4] 唐巍,白牧可.农村电网电压降落的影响因素分析[J].供用电,2016,33(7): 2-7.
[5] 冯雷,蔡泽祥,王奕,等.计及负荷储能特性的微网荷储协调联络线功率波动平抑策略[J].电力系统自动化,2017,41(17): 22-28.
[6] 王海波,许路广,杨秀,等.考虑混合储能荷电状态的独立光伏系统控制策略[J].电测与仪表,2016,53(15): 39-46.
[7] 曾祥君,黄明玮,王文,等.配电网三相不平衡过电压有源抑制方法研究[J].电工技术学报,2015,30(9): 61-69.
[8] 朱洋艳,王致杰,王鸿,等.基于分层控制的微电网混合储能协调优化策略研究[J].太阳能学报,2021,42(3): 235-242.
[9] 陈浩,石辉,周过海.湖南分布式储能电站集中控制可行性分析[J].湖南电力,2021,41(5): 97-100.
[10] 施念,康慨,严晓彬,等.一种用于高海拔地区变电站站用电的微电网配置研究[J].电工电气,2021(3): 66-69.
[11] 王玎,沈阳武,邵筑,等.湖南电网新能源消纳关键影响因素量化分析[J].湖南电力,2021,41(2): 65-69.
[12] 陈浩,贺鹏程,石辉,等.基于在线分析的电网清洁能源消纳调度策略及实例分析[J].湖南电力,2018,38(3): 65-69.
[13] 吴宇奇,叶雨晴,马啸,等.抑制电压波动与规避频率越限的孤岛微电网并网预同步方案[J].电力系统自动化,2021,45(14): 56-64.
[14] 陈远扬,黄际元,李欣然,等.新型快速储能参与调频的必要性及可行性[J].湖南电力,2015,35(6): 15-18,26.
[15] 曹斌,代文良,黎志,等.电网侧储能电站防孤岛保护的整定研究[J].湖南电力,2019,39(5): 9-12,17.