Fault detection method of distribution network line based on integrated distribution box and high voltage sensor

Abstract

The invention discloses a distribution network line fault detection method based on a comprehensive distribution box and a high-voltage sensor. Send to the collection module; Step 2. The collection module is responsible for calculating the three-phase sensor data, judging the fault type and fault point section of the actual line on the spot, and the collection module transmits the final calculation result or line parameters in real time through wireless transmission. Integrated distribution box; step 3, the integrated distribution box wirelessly transmits the calculation results or line parameters to the main station; solves the problem that the fault location system based on the fault indicator in the prior art, especially the fault indicator of the transient state recording type, has been widely used However, fault indicator products cannot realize accurate judgment of single-phase ground faults on the spot, and there are technical problems such as low ground fault detection accuracy.

Description

technical field [0001] The invention belongs to distribution automation technology, in particular to a distribution network line fault detection method based on a comprehensive distribution box and a high-voltage sensor. Background technique [0002] As an important part of the modern distribution network management system, distribution automation is a necessary condition for realizing a smart distribution network and an effective means to improve the reliability of power supply and the level of operation management. With the continuous deepening of the transformation of rural power grids, a large number of integrated distribution boxes have been applied to rural power lines and various distribution stations. It is designed for the requirements of the system, it integrates power distribution, metering, protection, and reactive power compensation of capacitors. However, at present, the 10KV side of all integrated distribution boxes only has drop-out fuses and lightning arres...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a distribution network line fault detection method based on an integrated distribution box and a high-voltage sensor to solve the existing fault location system based on a fault indicator, especially a transient recorder type fault indicator It has been widely used, but fault indicator products cannot accurately judge single-phase ground faults on the spot, and the accuracy of ground fault detection is low and other technical problems

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