Broken wire on-load processing device for low-voltage distribution insulated conductor and processing method thereof

Abstract

The invention discloses a broken wire on-load processing device for a low-voltage distribution insulated conductor and a processing method thereof. The processing device comprises insulated puncture wire clamps, a first insulated cable, a second insulated cable, a low-voltage air circuit breaker and a clamp on amperemeter, wherein the first insulated cable is connected with the second insulated cable through the low-voltage air circuit breaker; the clamp on amperemeter is arranged on the first insulated cable; and the insulated puncture wire clamps are arranged at the end parts of the first insulated cable and the second insulated cable and are connected with low-voltage distribution insulated conductors. The method shortens the power failure time, narrows the power failure range, is superior in the aspect of first-aid repair time, multiple power supply volume analysis and the like in comparison with the traditional power failure operation mode and has better economic benefit and social benefit. In addition, the invention has the advantages of convenient operation, low safety risk and the like.

Description

technical field [0001] The invention belongs to the technical field of low-voltage power distribution insulated wires, and in particular relates to an operating method for processing under load when the low-voltage power distribution insulated wires are broken. Background technique [0002] In the prior art, the low-voltage power distribution line network has the characteristics of wide distribution, many household electrical appliances, low insulation level, and directly facing users. The faults are roughly divided into the following categories: 1. Over (jump) wire damage, broken strands, twists, and galvanic corrosion; 2. Branch drainage wires are blown; 3. Trunk and sub-support empty insulated wires are broken, damaged, and disconnected and galvanic corrosion; 4. The terminal is overheated (such as: joint discoloration, snow melts first, etc.), and the connection nut is loose. [0003] The reason is that the loads carried by the low-voltage distribution lines are relativ...

AI Technical Summary

Problems solved by technology

It takes as much as half an hour to implement safety and technical measures, including power outages, power inspections, and grounding wires. After work, it takes about half an hour to remove the grounding wires and resume power transmission. This traditional method of dealing with disconnection can no longer adapt to modern To meet the needs of the society, it is imperative to carry out on-load repair and maintenance of low-voltage distribution lines. Only by facing the reality through continuous technological innovation can we completely change the current backward situation, and secondly, it can greatly improve the safe operation level of low-voltage distribution lines.

At the same time, the power supply department has improved the reliability of power supply to power users. Today's social harmony and development are changing with each passing day. People are very sensitive to short-term fault repairs and power outages, which seriously affect the production and life of users. For example: there is an industrial user once. A short-term power outage will cause losses of tens of thousands or even hundreds of thousands of yuan. A temporary power outage for emergency repairs will bring users continuous production interruptions, and a half-hour power outage will cause users continuous production interruptions. The production rate is as high as 55%, and it is difficult to return to the normal production status before the power outage in a short time after the power is restored.

There are also some important continuous production users who have high requirements for power supply reliability. In order to prepare for the prevention of sudden power outages and restart the equipment and start up after power restoration, it will take several hours at the fastest to resume normal operation. For intermittent power outages The huge loss of economy, product quality, raw materials, etc. is really irreparable for users. The power outage makes users complain endlessly. In view of the many hidden dangers, there are many shortcomings in the traditional low-voltage power distribution insulated wire disconnection treatment method: 1. The power outage area increases.

Due to the disconnection of one phase, the three-phase main air circuit breaker of the low-voltage side line of the distribution transformer must be "separated", and the other two phases will also be cut off. Other normal two-phase load-bearing equipment in operation will expand the scope of power outages as they step into temporary power outages. At the same time, frequent "opening" and "closing" of load circuit breakers with faulty operations will cause arc short-circuiting of contacts, resulting in increased contact resistance. Reduce the life cycle

[0004] 2. Long preparation time, increased workload, easy to expand accidents

Auxiliary operations use a lot of tools and appliances, which are inconvenient to carry. Power outages, power inspections, grounding wires, and power supply restoration operations at the end of work account for about half of the direct repair time. It takes a lot of energy to go back and forth several times, delaying the best time for emergency repairs, and at the same time, a slight negligence is prone to the possibility of wrong power outages, and the consequences are disastrous

[0005] 3. There are a lot of personnel and vehicles involved in repairing broken lines, and it is difficult to make a reasonable layout in a short period of time. As a result, there are many indirect or direct operation points for the staff on the pole, and the procedures are complicated, and the staff under the pole are in a hurry. On-site emergency repair work is not compact and inefficient

[0006] 4. Sudden power outages bring inconvenience to people's production and life, irreparable losses, and negative effects on society

Images