Abstract
After a transmission line fails, quickly and accurately find the fault point and deal with it, which is of great significance to maintaining the normal operation of the power system. Aiming at the problems of low accuracy of traditional traveling wave fault location methods and many affected factors, this paper relies on distributed traveling wave monitoring points arranged on transmission lines to study methods to improve the accuracy of traveling wave fault location on transmission lines. First, when a line fails, a traveling wave signal that moves to both ends will be generated and transmitted along the transmission line. We use the Radon transform algorithm to process the traveling wave signal. Then, this paper uses ant colony algorithm to analyze and verify the location and extent of transmission line faults and then optimizes high-precision collection and processing. Finally, the simulation distance measurement is carried out on double-terminal transmission lines and multiterminal transmission lines (T-shaped lines) with branches. The results show that, for double-ended transmission lines, the algorithm increases the speed of matrix calculations and at the same time makes the fault location error of the transmission grid still maintain the improved effect.
Highlights
Transmission lines bear the heavy responsibility of transmitting electrical energy and are the most extensively distributed component of the power grid [1, 2]
After the transmission line fails, quickly and accurately find the fault point and deal with it, which is of great significance for maintaining the normal operation of the power system [15, 16]
Aiming at the problems of low accuracy of traditional traveling wave fault location methods and many affected factors, this paper relies on distributed traveling wave monitoring points arranged on transmission lines to study methods to improve the accuracy of traveling wave fault location on transmission lines and through Radon transform and ant Group algorithms carry out signal processing and data analysis
Summary
Transmission lines bear the heavy responsibility of transmitting electrical energy and are the most extensively distributed component of the power grid [1, 2]. The fault location accuracy of the impedance method and the fault analysis method is lower than that of the line, the first two methods require low sampling rate and are easy to implement, with the continuous development and Security and Communication Networks advancement of relay protection technology, the quick-action performance of the protection element is greatly improved, the fault data window is greatly shortened, and the fault location accuracy of the time-domain method based on distributed parameters is not affected by the line and system parameters [13, 14]. Aiming at the problems of low accuracy of traditional traveling wave fault location methods and many affected factors, this paper relies on distributed traveling wave monitoring points arranged on transmission lines to study methods to improve the accuracy of traveling wave fault location on transmission lines and through Radon transform and ant Group algorithms carry out signal processing and data analysis. Damage to power transmission equipment may cause the overall structure of power transmission and distribution to be paralyzed. erefore, accurate fault location and troubleshooting has become an important topic for domestic and foreign experts and scholars and has important economic benefits and broad application prospects
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