中低压直流开关电器试验系统应用  

Application of Testing System for Medium and Low Voltage DC Switching Devices

作　　者：王稼骏 张立茜 蒋治国[2,3] 周璇 费婉亲 WANG Jiajun;ZHANG Lixi;JIANG Zhiguo;ZHOU Xuan;FEI Wanqin(Zhejiang Fangyuan Electrical Equipment Testing Co.,Ltd.,Jiaxing 314001,China;School of Electronic and Information Engineering,Tongji University,Shanghai 201804,China;College of Information Science and Engineering,Jiaxing University,Jiaxing 314001,China)

机构地区：[1]浙江方圆电气设备检测有限公司,浙江嘉兴314001 [2]同济大学电子与信息工程学院,上海201804 [3]嘉兴大学信息科学与工程学院,浙江嘉兴314001

出　　处：《电器与能效管理技术》2025年第1期61-67,共7页Electrical & Energy Management Technology

摘　　要：为满足轨道交通、新能源等领域的中低压直流开关电器的检测需求,研制了大容量直流短路试验平台。其交流侧供电采用10 kV电网电源和短路冲击发电机双回路方案,最大短路容量达3200 MVA,最大试验能力达2 kV/350 kA及6 kV/120 kA;平台采用12脉波整流技术,直流输出信号的纹波系数<1.5%。对短时耐受电流150 kA且耐受时间200 ms的某直流断路器进行短时耐受电流试验;对额定电压1500 V、额定短路开断电流250 kA的某直流熔断器,以及最大故障条件下短路电流135/95 kA的轨道交通用直流断路器,分别进行短路分断能力试验。结果表明,试验平台能够提供满足产品需求和标准要求的试验电流、纹波系数和时间常数。To meet the testing needs of medium and low voltage DC switching device in rail transit,new energy and other fields,a large-capacity DC short-circuit test platform has been developed.The AC side power supply of the test platform adopts the optional 10 kV grid power supply and short-circuit impact generator dual-circuit option.The maximum short-circuit capacity reaches 3200 MVA,and the maximum test capability reaches 2 kV/350 kA or 6 kV/120 kA.The platform adopts twelve pulse rectification technology,and the ripple coefficient of the DC output signal is less than 1.5%.A short-time withstand current test was conducted on a DC circuit breaker with a short-time withstand current of 150 kA and a withstand time of 200 ms.Additionally,the short-circuit breaking capacity tests was seperately perfomed on a DC fuse rated at 1500 V voltage and 250 kA rated short-circuit breaking current,as well as on a DC circuit breaker designed for rail transit,which can withstand a short-circuit current of 135/95 kA under maximum fault conditions.The result show that the test platform can provide test current,ripple coefficient and time constant that meet the product needs and the standard requirements.

关 键 词：中低压直流电器 短路分断能力试验 大电流试验技术 直流断路器 

分 类 号：TM506[电气工程—电器]