Transient fault monitoring and indicating system for 10KV and 35KV overhead lines

Abstract

The invention discloses a transient fault monitoring and indicating system for 10KV and 35KV overhead lines. Which comprises a processing system, a signal output port of the detection module is provided with an information collection system; wherein a signal output port of the information collection system is provided with a processing system, a signal output port of the processing system is provided with a fault switching-off and display system, a signal output end of the control module is provided with the processing system, the control module comprises a control panel and a signal converter, and the detection module comprises wavelet analysis and binary propulsion. According to the 10KV and 35KV overhead line transient fault monitoring and indicating system, the method of accurately positioning the arrival time of the fault current can be used, the determination speed is higher, and the workload is smaller.

Description

technical field [0001] The invention relates to the field of power transmission, in particular to a transient fault monitoring and indicating system for 10KV and 35KV overhead lines. Background technique [0002] The low-current grounding of the distribution network has always been the main problem that plagues the power supply work, especially at the end of the distribution network because the power supply network in the distribution network is complex and changeable, which increases the difficulty of grounding positioning, resulting in the single-phase grounding of the existing low-current grounding system. The correct rate of fault detection is very low (20% to 30%); many traditional power supply departments still use the method of pulling the road to determine the fault line, and rely on the manual inspection method to find the fault point, which will cause the interruption of power supply for large areas of users. Also consumed a large amount of manpower and material re...

AI Technical Summary

Problems solved by technology

[0002] The low-current grounding of the distribution network has always been the main problem that plagues the power supply work, especially at the end of the distribution network because the power supply network in the distribution network is complex and changeable, which increases the difficulty of grounding positioning, resulting in the single-phase grounding of the existing low-current grounding system. The correct rate of fault detection is very low (20% to 30%); many traditional power supply departments still use the method of pulling the road to determine the fault line, and rely on the manual inspection method to find the fault point, which will cause the interruption of power supply for large areas of users. It also consumes a lot of manpower and material resources of the power department

Although when a single-phase ground fault occurs, a small impedance short circuit cannot be formed, which does not affect the continuous power supply to the load, so it is not necessary to trip immediately, but it will cause the non-faulted phase-to-phase voltage to rise, and long-term operation will easily cause the fault to expand into two or more points. Point grounding short circuit, arc grounding will also cause overvoltage of the whole system, which will damage the equipment and destroy the safe operation of the system. In order to solve the above problems, we propose this 10KV and 35KV overhead line transient fault monitoring and indication system

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