A fault early warning device for power distribution site

Abstract

The invention discloses a fault early warning device for a power distribution station, comprising an early warning box body, a backup switch assembly, a pressurized air suction assembly, an air linkage assembly, an air collecting box cooling assembly, an air distribution box cooling assembly and an air distribution box assembly. The spare switch assembly is evenly and fixedly installed on the upper surface of the early warning box body, the pressurized air suction assembly is fixedly installed on the inner end of the early warning box body, and the gas linkage assembly is fixedly installed inside the early warning box body. , the air collecting box cooling assembly and the air distribution box cooling assembly are fixedly installed on both sides of the gas linkage assembly, respectively, and the air distribution box assembly is fixedly installed at the other end of the inside of the early warning box, the present invention Provide the effect of backup circuit, in addition, accurately detect the concentration of sulfur hexafluoride gas, determine whether the electrical equipment is faulty, in addition, use the kinetic energy of air flow to achieve the work of cooling the device, and finally collect the detected sulfur hexafluoride gas to avoid occurrence of suffocation accident.

Description

technical field [0001] The invention relates to the technical field of power distribution networks, in particular to a fault early warning device for power distribution sites. Background technique [0002] The function of the distribution network is to distribute the electric energy of the transmission network or regional power plants to various users through the distribution facilities on-site or by the host. According to the voltage level, it can be classified into: high-voltage distribution network (35-110KV), medium-voltage distribution network (6-20KV, Suzhou has 20KV), low-voltage distribution network (220 / 380V). In my country, the 10kV medium-voltage distribution network is traditionally regarded as the backbone of the distribution network, and its power supply radius is about 10 kilometers. In the power distribution site, it is generally composed of distribution transformers, switch cabinets, isolation switches, reactive power compensators and some ancillary facilit...

AI Technical Summary

Problems solved by technology

[0004] (1) When a general power distribution network fails, the corresponding electrical equipment will stop working immediately after the circuit is short-circuited, so the corresponding work will stop immediately, and the defense function of some safety equipment will also stop, so that the power failure will affect various departments work, and has a mobile safety hazard;

[0005] (2) In the work of detecting the concentration of sulfur hexafluoride gas, due to the presence of this type of gas in the interior of electrical equipment and the low content of components, traditional detection methods cannot detect accurate values. lead to large deviations in test results;

[0006] (3) According to the characteristics of sulfur hexafluoride gas, it is not suitable to store the gas under high temperature conditions, so it is necessary to cool down the device containing sulfur hexafluoride gas, but installing additional power cooling equipment will occupy too much Space, and consume extra power, will also increase the production cost of the device;

[0007] (4) After detecting the sulfur hexafluoride gas, if the sulfur hexafluoride gas is directly discharged into the power distribution cabinet or power distribution room, the concentration of sulfur hexafluoride gas in the room will be too high. Accidents leading to suffocation

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