Distribution network fault detection and location decision system

Abstract

The invention belongs to the field of power grid monitoring, and particularly relates to a power distribution network fault detection and location decision system, which comprises an electronic transformer, a data acquisition and merging module, a Zigbee communication module, and an upper computer S3C6410, wherein the electronic transformer communicates with the data acquisition and merging module; the data acquisition and merging module is in signal communication with the upper computer S3C6410; the upper computer S3C6410 is connected with the Zigbee communication module; and the Zigbee communication module is connected with a control terminal. A single chip microcomputer and a sampling and conditioning circuit are used for judging each grid state, the result is transmitted to the S3C6410 chip via a 485 bus, an environmental temperature and a real-time picture are acquired, the workload is greatly reduced, system reliability is improved, the measurement precision is high, the hardware circuit is simple, and the operation is simple.

Description

technical field [0001] The invention belongs to the field of power grid monitoring, in particular to a distribution network fault detection and positioning decision system. Background technique [0002] At present, in China's distribution network, with the decline of cable application costs and the expansion of urban and rural network transformation work, power cables are more and more used in power distribution systems, and a line mode in which overhead lines and cables are mixed appears. Therefore, many ranging methods for uniform transmission lines are facing great challenges; the neutral point adopts the mode of not grounding or grounding through the arc suppression coil, and it is allowed to run for 1-2h after a single-phase fault occurs. Therefore, many foreign measurement methods The distance technology cannot be directly applied to China's distribution network; the distribution network has many branches, and it is no longer a simple structure of "two points and one l...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to overcome the deficiencies of the above-mentioned technologies, and provide a distribution network fault detection and location decision-making system to overcome the complexity and variability of the distribution network in the prior art, resulting in the occurrence of faults in the distribution network operation. When a fault occurs, it is difficult to locate the specific source of the fault accurately and in a timely manner, resulting in untimely repair of the fault and the existing technical problems of unpredictable losses caused by too long a power outage

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