Regional power grid T line fault range-finding system based on generalized measurement

• Main Authors: LIU ZHIYANG, HAN ZHENXING, HAO DERONG, WANG YINGWU, CHEN HONGLI, HU GUOYANG, LIU BIN, HAN RIDONG, TAO XUYAN, YU SHENHANG, TIAN SHURAN, ZHANG XUEQING, YAN XIUGUANG, LI XINTANG, WANG CHENGFU, LU GANG
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2017
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SIGNALLING; TESTING; TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILARSIGNALS

The invention discloses a regional power grid T line fault range-finding system based on generalized measurement, and the system employs distributed sampling terminals, a communication network, and a traveling wave range-finding analysis center. The distributed sampling terminals comprise non-contact voltage and current traveling wave collection devices disposed at poles, and each non-contact voltage and current traveling wave collection device collects an abrupt signal of a traveling wave, and uploads the abrupt signal to the traveling wave range-finding analysis center of a main station through a communication network. The traveling wave range-finding analysis center calculates the position of a fault point through employing the information uploaded by the sampling terminals, taking the time marks of two ends of a fault branch circuit as the references, combining the parameters of the fault branch circuit and employing a double-end traveling wave fault range-finding theory, thereby achieving the fault range