Real-time data collecting and fault positioning system of power distribution network and working method thereof
A technology of real-time data collection and fault location, applied in the field of electric power grid, can solve the problems of indistinguishable line impulse current, fault current, comprehensive analysis and judgment, and fault location, etc., to reduce the scope of power outages, reduce fault line inspection personnel, and reduce power outages the effect of time
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[0020] See figure 1 , the distribution network real-time data acquisition and fault location system of this embodiment is composed of a substation voltage acquisition unit 1, a line unit 2, a real-time data server 3, a background monitoring computer 4 and a handheld terminal 5.
[0021] One substation voltage acquisition unit 1 is installed in each substation in the distribution network under the jurisdiction of the distribution monitoring and maintenance center. The main equipment of each substation voltage acquisition unit 1 is the intelligent voltage detection terminal DFU-C. The intelligent voltage detection terminal DFU-C is used to collect the three-phase voltage and zero-sequence voltage value of the substation bus as the starting criterion when a single-phase ground fault (low current grounding) occurs. The intelligent voltage detection terminal DFU-C has RS485 communication and GPRS wireless communication functions, and it sends the collected three-phase voltage and ...
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