锂电池组在变电站蓄电池组核对性放电中的应用
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摘要
根据电力系统相关规程要求,配置单蓄电池组的变电站直流电源系统在对蓄电池组进行核对性放电试验时,蓄电池组不能退出运行.先将备用蓄电池组并列到直流系统,再将运行中的蓄电池组退出后作核对性放电试验是通行方案.传统的备用铅酸蓄电池组方案操作繁琐,安全性低.本文提出并实现了用锂电池组代替铅酸蓄电池组的方案,应用等效电路模型分析法,分析了锂电池组在直流电源系统中的运行特性,验证了锂电池组在变电站蓄电池组核对性放电中的安全性,对提高变电站直流电源系统维护的方便性和安全性有较大的实用价值.
According to relevant regulations of a power system, DC power system of a substation equipped with a single battery pack cannot be put out of operation when a battery pack is used to check and discharge tests. Firstly, standby battery is paralleled to a DC system. The battery pack in operation is then withdrawn, and check and discharge tests are carried out. The traditional scheme of using lead-acid battery pack as backup power source is tedious in operation and low in safety. This paper puts forward and implements the lithium-ion battery pack instead of lead-acid battery pack. By using Equivalent Circuit Model Analysis method, this paper analyzes the running characteristics of Lithium battery pack in the DC power supply system, and the safety of Lithium battery pack working in check and discharge test of the substation DC power system is verified. The results of this paper are of great practical value for improving the maintenance convenience and reliability of DC power supply system in the substation.
According to relevant regulations of a power system, DC power system of a substation equipped with a single battery pack cannot be put out of operation when a battery pack is used to check and discharge tests. Firstly, standby battery is paralleled to a DC system. The battery pack in operation is then withdrawn, and check and discharge tests are carried out. The traditional scheme of using lead-acid battery pack as backup power source is tedious in operation and low in safety. This paper puts forward and implements the lithium-ion battery pack instead of lead-acid battery pack. By using Equivalent Circuit Model Analysis method, this paper analyzes the running characteristics of Lithium battery pack in the DC power supply system, and the safety of Lithium battery pack working in check and discharge test of the substation DC power system is verified. The results of this paper are of great practical value for improving the maintenance convenience and reliability of DC power supply system in the substation.
引文
[1] 中华人民共和国国家发展和改革委员会.电力工程直流系统设计技术规程:DL/T 5044—2004[S].北京:中国电力出版社,2004.
[2] 中华人民共和国国家经济贸易委员会.电力系统直流电源柜订货技术条件:DL/T 459—2000[S].北京:中国电力出版社,2000.
[3] 中华人民共和国国家经济贸易委员会.电力系统用蓄电池直流电源装置运行与维护技术规程:DL/T 724—2000[S].北京:中国电力出版社,2000.
[4] 王宏亮,崔胜民.基于试验的铅酸电池充放电特性模型的建立[J].蓄电池,2005(1):38-40,44.
[5] 韩宗奇,刘吉良,朱洪波,等.典型温度下磷酸铁锂电池PNGV模型研究[J].燕山大学学报,2012,36(3):248-253.
[6] 张宾,郭连兑,李宏义,等.电动汽车用磷酸铁锂离子电池的PNGV模型分析[J].电源技术,2009,33(5):417-421.
[7] 王治国,高玉峰,杨万利.铅酸蓄电池等效电路模型研究[J].装甲兵工程学院学报,2003,17(1):4.
[2] 中华人民共和国国家经济贸易委员会.电力系统直流电源柜订货技术条件:DL/T 459—2000[S].北京:中国电力出版社,2000.
[3] 中华人民共和国国家经济贸易委员会.电力系统用蓄电池直流电源装置运行与维护技术规程:DL/T 724—2000[S].北京:中国电力出版社,2000.
[4] 王宏亮,崔胜民.基于试验的铅酸电池充放电特性模型的建立[J].蓄电池,2005(1):38-40,44.
[5] 韩宗奇,刘吉良,朱洪波,等.典型温度下磷酸铁锂电池PNGV模型研究[J].燕山大学学报,2012,36(3):248-253.
[6] 张宾,郭连兑,李宏义,等.电动汽车用磷酸铁锂离子电池的PNGV模型分析[J].电源技术,2009,33(5):417-421.
[7] 王治国,高玉峰,杨万利.铅酸蓄电池等效电路模型研究[J].装甲兵工程学院学报,2003,17(1):4.