Flexible DC protection test system for field application

• Main Authors: CHEN MING, HU HONG, WANG DONGPENG, GUO JUNBO, CHEN YAN, HE XIAOYAN, XIAO LEISHI, DONG HUALIANG, LIN FENG, CHEN LUOFEI, WANG ZHICHUN, DU SHUZHUANG, XU XIYONG, LIN BEISI, LUO BIN, LIU ZHENGFU, XIANG QIAN, CHEN HAOLIN, FAN DAOQING, ZHANG ZEBIN, CAI XIAOMING, ZHANG BAN, LIN YIHUI, LI HUA, LIN JIE, SU XIAOYI, ZHENG KUNWEI, ZHANG SONGGUANG, CHEN TAO, CHEN JUN
• Format: Patent
• Language: Chinese; English
• Published: 07.09.2018
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

The invention discloses a flexible DC protection test system for field application. The flexible DC protection test system includes a software part and a hardware structure, and the software part adopts a closed loop dynamic control system to achieve closed-loop test of a differential protection and an overcurrent protection according to protection logic of the overcurrent protection and the differential protection of flexible DC protection. The differential protection includes a starting loop, a bridge arm, a valve and a DC bus rod. The overcurrent protection includes an AC connection bus, abridge arm, a valve and an AC field area ground connection. The closed-loop test includes protection setting, action exit time and protection action logic. The protection setting sets different outputvalues according to different constant values, and an outlet of a hardware structure recovery protection device achieves the closed-loop test. According to the technical scheme, links of manual protection logical analysis and