Contact box having intelligent on-line monitoring function

Abstract

The invention discloses a contact box having an intelligent on-line monitoring function. The contact box is arranged in a KYN61-40.5 middle mounted switch cabinet and comprises a background management module, a detection sending module, an alarm module and an induction power supply. By the contact box, change information of a three-phase current and a zero-sequence current can be mastered in real time, a ground fault is timely founded out, remote monitoring, remote communication and related remote control on the ground fault of the switch cabinet are achieved, the safe and stable running of the switch cabinet is ensured not to be affected due to the existing of the ground fault, and thus, the power supply reliability is effectively improved.

Description

technical field [0001] The invention relates to a contact box with intelligent online monitoring function. Background technique. [0002] With the development of science and technology and the continuous improvement of the quality of human life, the society's total demand for electric energy is growing rapidly, and at the same time, the requirements for electric energy quality are also significantly improved. In order to provide power with high energy efficiency and low loss, the mid-mounted switchgear power supply technology is widely used due to its advantages of high structural strength, reliable and safe operation, small maintenance and low operating cost. At present, in my country's power industry, KYN61 central switchgear has been widely used in power grids with voltage levels of 110KV and above. [0003] Although the existing KYN61-40.5 mid-mounted switchgear has the above advantages, there are still various problems, such as the lack of intelligent online monitoring...

AI Technical Summary

Problems solved by technology

[0004] Ground faults are also relatively common during the operation of switchgear. After a ground fault occurs, intermittent arcing grounding may occur, resulting in an overvoltage that is several times higher than the normal voltage, and this overvoltage further breaks down the insulators on the line. , resulting in serious short-circuit accidents

At the same time, part of the distribution transformer may be burned, causing the lightning arrester and fuse insulation on the line to break down or even burn out, which may also cause a fire. A serious ground fault may destroy the stability of the regional power grid, causing greater accidents and affecting the power supply. make a large impact

Failure to eliminate the fault in time may even lead to electric shock accidents and endanger personal safety.

[0005] With the rapid development of the power grid and the continuous improvement of power supply reliability requirements, especially after the State Grid proposed to build a smart grid, the traditional periodic maintenance mode is obviously not suitable for the future development requirements of the power grid.

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