摘要
双电源/双回线路的交流供配电系统,由于不能长期并联运行,当某一回路发生故障或闪络时,通过母联开关把正常回路联到停电回路。由于切换需要一定的时间,且不能保持供电的连续性,导致用户负载跳停,还有可能扩大供电故障范围。根据统计和分析,直流供配电系统有独特的优势,在低压供配电系统中,采用双回线路直流供电能够克服交流供电这一缺点,能够满足用户供电的连续性的要求。研发了一种用于低压供配电系统的直流供配电技术,经过实际运行检验,证明供电安全、可靠,供电连续性好,运行成本低,占用场地小,并具有一定的节能效果。
For AC power supply and distribution systems with dual power/dual circuit lines,as it is not able to run in parallel in a long time,when there is a fault or flashover in a circuit,connect the normal circuit to the blackout circuit by bus switch.Because switching takes a certain amount of time,it can′t keep the continuity of the power supply,so as to cause the user load to jump,it is also possible to expand the scope of power supply failure.According to statistics and analysis,in low voltage power supply and distribution systems,DC power supply and distribution system has its unique advantages,the shortcomings of AC power supply can be overcome by using DC power supply on dual circuits.It can meet the requirement of continuity of power supply for users.A DC power supply and distribution technology for low voltage power supply and distribution system was developed.The actual run test proves that the power supply is safe and reliable with good continuity of power supply,and low running costs,small occupancy space,and there is a certain energy saving effect.
作者
宋江颂
SONG Jiangsong(Jiangsu Deli Chemical Fiber Co.,Ltd.,Suqian 223800,China)
出处
《电器与能效管理技术》
2020年第2期78-83,共6页
Electrical & Energy Management Technology
关键词
双回线路
直流供配电
电网闪络
均流
单向电气隔离
double circuit line
DC power supply and distribution
power grid flashover
current balance
one-way electrical isolation
