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A lightning arrester discharge current monitoring device

A discharge current and monitoring device technology, which is applied in the direction of measuring devices, measuring current/voltage, instruments, etc., can solve the problems that cannot meet the requirements of arrester discharge current monitoring, do not record the moment of arrester action, and cannot obtain waveform information, etc., to achieve The installation point is flexible and convenient, the effect of solving time error and not easy to lose

Active Publication Date: 2016-04-20
CHINA ELECTRIC POWER RES INST +1
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AI Technical Summary

Problems solved by technology

This utility model can monitor the operation times and discharge current amplitude of the line arrester in real time, but it does not record the moment when the arrester operates, and can only simply obtain the current amplitude, let alone obtain more detailed waveform information
It can be seen that the functions of these arrester discharge current monitoring devices are very simple and cannot meet the requirements for monitoring the arrester discharge current.
In addition, there are very few related products and patents for installing sensors in the arrester discharge channel to obtain lightning current parameters

Method used

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  • A lightning arrester discharge current monitoring device
  • A lightning arrester discharge current monitoring device

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the drawings.

[0029] Such as figure 1 with figure 2 , Provides a lightning arrester discharge current monitoring device, the device comprising a discharge current monitoring unit and a data receiving terminal; the discharge current monitoring unit transmits the monitored discharge current information to the data receiving terminal through an ISM wireless data transmission unit; The discharge current information includes amplitude, polarity, waveform and GPS time.

[0030] The discharge current monitoring unit includes a current sensor, a signal attenuator, a signal conditioning circuit, an A / D acquisition circuit, a trigger circuit, a CPU processor, an ISM wireless data transmission unit, a GPS time receiving unit, a clock chip and a data storage unit; The signal attenuator includes a signal attenuator A and a signal attenuator B, and the signal conditioning circuit includes a signal cond...

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Abstract

The invention provides a discharge current monitoring device of a lightning arrester. The discharge current monitoring device comprises discharge current monitoring units and a data receiving terminal; each discharge current monitoring unit transmits monitored discharge current information to the data receiving terminal via an ISM (industrial scientific medical) wireless data transmission unit; and the discharge current information contains amplitude, polarity, waveform and GPS (global positioning system) time information. Each discharge current monitoring unit is in bidirectional wireless communication with the data receiving terminal, and the data receiving terminal can access the discharge current monitoring units at any time to know running states of the discharge current monitoring units. The discharge current monitoring device is simple in structure and convenient to maintain, shortcomings of current discharge current monitoring for lightning arresters in the field of online monitoring for the lightning arrestors are overcome, and an excellent approach to acquiring lightning current parameters for lightning discharge monitoring and research is provided.

Description

Technical field [0001] The invention belongs to the technical field of on-line monitoring and lightning monitoring of lightning arresters in power systems, and specifically relates to a lightning arrester discharge current monitoring device. Background technique [0002] Lightning arrester is one of the main equipment to protect the power system equipment from lightning overvoltage and system operation overvoltage. As far as the working characteristics of lightning arresters are concerned, they sacrifice themselves to protect other equipment. However, the flow of a large current of tens of thousands of amperes or the continuous flow of several thousands of amperes in a short period of time will cause irreversible damage to the internal nonlinear valve. By monitoring and recording the waveform of the discharge current when the arrester is operating , Amplitude, and discharge times, the discharge energy of the current flowing through the arrester can be calculated, thereby providi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/00
Inventor 张波康文斌戴敏谷定燮彭庆华梅刚查志鹏王磊
Owner CHINA ELECTRIC POWER RES INST
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