【摘要】 直流电源系统是变电站的重要组成部分,承担对继电保护装置、自动装置、测量系统、通信系统、监控系统、事故照明等的供电任务。针对传统串联蓄电池组的许多不足,根据目前交直流一体化电源的方案,把变电站各种站用电源组合成一体化电源,由于变电站站用电源特殊性,必须对其保证供电的可靠性,提出蓄电池组件的并联且分布式布置,通过直流/直流和直流/交流变换模块输出适合的电压,避免了串联型直流电源系统单体蓄电池故障影响整组输出的问题,提高了系统可靠性。更多还原

【Abstract】 DC power supply system is an important part of the substation,which is responsible for the relay protection device,automation device,measurement system,communication system,monitoring system,accident lighting,etc.Aiming at the disadvantages of the traditional series battery,according to the scheme of AC/DC integrated power system,a new DC system integrating variety of substation power supplies into an integrated power supply is presented in this paper.Due to the particularity of substation power supply,the reliability of power supply must be guaranteed,and the parallel and distributed arrangement of accumulator components is proposed.Through DC/DC and DC/AC conversion module output appropriate voltage,the series DC power supply system failure of single battery affect the output of the whole set is avoided,which improves the reliability of the system.更多还原