变电站锂电池并联系统与级差配合研究

doi:10.3969/j.issn.1008-0198.2022.04.005

湖南电力 ›› 2022, Vol. 42 ›› Issue (4): 23-27.doi: 10.3969/j.issn.1008-0198.2022.04.005

变电站锂电池并联系统与级差配合研究

赵文钦¹, 肖辉¹, 张茂林¹, 李逸航¹, 龙飞宇¹, 文章²

1.长沙理工大学电气与信息工程学院,湖南长沙 410103;
2.国网湖南省电力有限公司超高压变电公司,湖南长沙 410004

收稿日期:2022-03-18 修回日期:2022-04-26 出版日期:2022-08-25 发布日期:2022-10-14
作者简介:赵文钦(1998),男,通信作者,硕士,研究方向为电力系统。肖辉(1975),女,教授,研究方向为电力系统。张茂林(1998),男,硕士,研究方向为综合能源发电系统。李逸航(1998),男,硕士,研究方向为综合能源发电系统。龙飞宇(1998),男,硕士,研究方向为综合能源发电系统。文章(1998),男,本科,主要从事变电站二次维修工作。
基金资助:
长沙市自然科学基金项目(KP2202213)

Research on Lithium Battery Parallel System and Level Difference Coordination in Substation

ZHAO Wenqin¹, XIAO Hui¹, ZHANG Maolin¹, LI Yihang¹, LONG Feiyu¹, WEN Zhang²

1. College of Electrical Engineering,Changsha University of Science and Technology, Changsha 410103,China;
2. State Grid Hunan Electric Power Company Limited Extra High Voltage Substation Company, Changsha 410004,China

Received:2022-03-18 Revised:2022-04-26 Online:2022-08-25 Published:2022-10-14

摘要/Abstract

摘要： 直流系统作为变电站供电系统的最后屏障,其供电可靠性直接影响整个变电站运行状况。基于某220 kV变电站中使用磷酸铁锂电池替代原有铅酸电池方案,分析磷酸铁锂电池特性、应用优势及可行性,研究该直流系统拓扑结构,同时计算升级改造后直流系统的短路电流。根据计算结果,参考断路器脱扣曲线,分析了其级差配合的合理性,指出现有直流系统断路器与熔断器的缺陷,为直流系统进一步升级改造提供依据。

关键词: 变电站直流系统, 磷酸铁锂电池, 智能电池并联系统, 级差配合

Abstract: The DC system is the last barrier of the substation power supply system, and its power supply reliability directly affects the operation of the entire substation. Based on a 220 kV substation, using lithium iron phosphate batteries to replace the original lead-acid batteries, this article analyzes the characteristics and applications of lithium iron phosphate batteries advantages and feasibility, studies the topological structure of the DC system, and calculates the short-circuit current of the upgraded DC system. According to the calculation results, and referring to the circuit breaker tripping curve, the paper analyzes the rationality of its level difference coordination, and points out the defects of the converter and the fuse. It provides a basis for the further upgrade and transformation of the DC system.

Key words: DC system, Lithium iron phosphate battery, smart battery parallel system, Level difference coordination

中图分类号:

TM912
TM63

赵文钦, 肖辉, 张茂林, 李逸航, 龙飞宇, 文章. 变电站锂电池并联系统与级差配合研究[J]. 湖南电力, 2022, 42(4): 23-27.

ZHAO Wenqin, XIAO Hui, ZHANG Maolin, LI Yihang, LONG Feiyu, WEN Zhang. Research on Lithium Battery Parallel System and Level Difference Coordination in Substation[J]. Hunan Electric Power, 2022, 42(4): 23-27.

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变电站锂电池并联系统与级差配合研究

Research on Lithium Battery Parallel System and Level Difference Coordination in Substation

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