Overall operation system based on distribution network inspection tool

Abstract

The invention relates to the technical field of low-voltage power distribution safety, in particular to an overall operation system based on a distribution network inspection tool, which comprises a background computer, a distribution network operation inspection intelligent tool and a distribution transformer distribution box, the distribution transformer distribution box comprises a master controller, a current sensor, a voltage sensor, a controlled power frequency current generator, a communication transmission module and a current transformer installed on a grounding lead. A distribution network operation inspection intelligent tool is used for monitoring and analyzing data state signals such as the inclination angle of an electric pole, the temperature of a cable, a connector and a disconnecting link connector, an abnormal opening signal of a box door, grounding resistance of a distribution transformer district, heat dissipation and service life of the tool, the state of inspection personnel and the like; a distribution network operation and maintenance intelligent tool needs to process data collected by various sensors in real time, accurate analysis and judgment are carried out, the effects of scientific management, high efficiency, accuracy and safety are achieved by applying 4G and 5G communication technologies and software and hardware research and development scientific and technological means, and the distribution network operation and maintenance intelligent tool has high reliability and applicability.

Description

technical field [0001] The invention relates to the technical field of low-voltage power distribution safety, in particular to an overall operation system based on distribution network inspection tools. Background technique [0002] Unqualified grounding resistance in the public distribution station area can easily lead to serious safety hazards such as residual current action protector failure, equipment casing electrification, etc. If it is not handled in time, it may cause vicious safety accidents such as electric shock casualties for humans and animals, and equipment damage. [0003] According to the operation regulations of low-voltage equipment, the management personnel should manually measure the grounding resistance of the equipment in the low-voltage distribution station area at least once a year, and if it does not meet the standard, it will be renovated. The measurement method currently used is still manual measurement. The main disadvantages of manual measuremen...

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Problems solved by technology

[0004] 1. High risk: The grounding lead must be artificially disconnected during measurement. At this time, the system is temporarily running at the neutral point without grounding. If the low-voltage line or equipment has a grounding point, the terminal of the grounding lead may carry phase voltage, which is more dangerous. ;

[0005] 2. Large workload: Due to the large number of equipment, the points should be multi-faceted and scattered, the workload of manual measurement is large, and it is not easy to supervise. If there is any missed inspection, it is easy to cause safety hazards;

[0006] 3. The test cycle is too long: generally once a year according to the requirements. In fact, due to the large number of equipment, this goal is also difficult to achieve. In addition, during the operation of the equipment, due to soil changes, grounding body corrosion, and grounding wire looseness, etc., grounding Resistance may change at any time;

[0007] 4. It is impossible to monitor the dangerous overvoltage of the equipment shell due to poor grounding, which is also the direct cause of the accident

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