基于并联智能电池组件的分布式直流电源系统

针对十堰郧县220 kV变电站采用就地布置二次设备预制舱的布置方案,紧密结合一体化电源技术特点,提出选用新型的分布式直流电源系统,采用并列蓄电池组方案,对该技术方案的可靠性进行论述。结合并列蓄电池方案以及新型蓄电池技术发展热点,提出选用磷酸铁锂蓄电池并对该种蓄电池进行选型论证。对常规铅酸蓄电池的直流电源系统及采用磷酸铁锂的分布式直流电源系统进行全寿命周期技术经济比较,发现新方案更加经济可靠,最终确定了本站一体化电源系统的方案。

Distributed DC power system based on parallel intelligent battery components

In view of the layout plan of the secondary equipment prefabricated cabin of a 220 kV substation in YUN county,a new type of distributed DC power supply system was proposed in combination of the technical characteristics of the integration power supply.The reliability of this technical plan which adopted parallel battery was discussed.Combining the hotspot of the parallel battery and new battery,the choice of lithium iron phosphate battery was proposed and argued.A comparison based on full life cycle between conventional lead-acid battery DC power supply system and the distributed DC power system was conducted,and the final integration power plan was determined.