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Ring network cabinet abnormal alarm device

A technology of abnormal alarm and ring network cabinet, which is applied in the direction of measuring devices, panel/switching station circuit devices, instruments, etc., can solve the problems of threatening the personal safety of surrounding pedestrians, affecting the safe operation of equipment, and equipment failure, so as to enhance anti-interference ability, improve transmission speed and accuracy, and save power

Active Publication Date: 2022-04-12
KAIFENG POWER SUPPLY COMPANY STATE GRID HENAN ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If flooding occurs during the operation of power equipment, it will not only affect the safe operation of the equipment, but also cause problems such as equipment failure and leakage, directly threatening the personal safety of pedestrians around

Method used

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  • Ring network cabinet abnormal alarm device
  • Ring network cabinet abnormal alarm device

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention will be further described below in conjunction with embodiment.

[0018] Such as figure 1 As shown, according to this application, an abnormal alarm device for a ring network cabinet is proposed, including a signal detection module, a threshold judgment module and an output drive module,

[0019] The signal detection circuit inputs the working state signal of the reduced voltage ring main unit to the abnormal operation alarm circuit of the ring main unit, and at the same time uses the bridge to sort out the AC signal to facilitate the subsequent test and judgment. The signal is input from the Input port, through the dual-channel AC filter circuit composed of capacitor C9 and inductor L2, capacitor C10 and inductor L3, the two channels are connected through the PNP transistor Q4, and then the signal is input to the diode D1, diode D2, diode D3, diode The AC-to-DC rectifier bridge composed of D4 is output to convert the initial AC signal into a DC s...

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PUM

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Abstract

The application relates to an abnormal alarm device for a ring network cabinet, including a signal detection module, a threshold judgment module and an output drive module. The abnormal alarm device of the ring main unit designed this time can enable the electric equipment to issue a water immersion alarm in a timely manner under the extreme environment of heavy rain, so as to protect the personal safety of pedestrians and staff. The signal detection circuit and the power equipment directly establish a signal path, which can detect the working status of the power equipment in real time; the threshold judgment circuit is directly started by the DC amplified signal generated by the signal detection circuit, and the response is fast without additional power loss. The multi-stage superposition judgment method has accurate results and high applicability; the output drive circuit adopts a multi-stage amplification method, which has strong driving force and good stability.

Description

technical field [0001] The application relates to the field of power systems and ring network cabinets, in particular to an abnormal alarm device for ring network cabinets. Background technique [0002] As a representative of an independent power system, the ring main unit is widely used in various places, and has the advantages of small footprint, quick installation and convenient maintenance. However, in recent years, abnormal weather has occurred in various parts of our country. Typhoons and stormy weather have increased significantly in the coastal areas of Guangdong. It is the power equipment of the distribution network, which is often faced with the danger of flooding. If flooding occurs during the operation of power equipment, it will not only affect the safe operation of the equipment, but also cause problems such as equipment failure and leakage, which directly threaten the personal safety of pedestrians around. Therefore, in view of the above problems, an intelli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/08H02B1/24
CPCG01V3/08H02B1/24
Inventor 曹翀王磊郑罡刘冰
Owner KAIFENG POWER SUPPLY COMPANY STATE GRID HENAN ELECTRIC POWER