Zinc oxide lightning arrester deterioration protective device with wide adaptability

A protection device, an adaptable technology, applied in emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, circuit devices, etc., can solve problems such as breakdown failure, slowness, increased leakage current, etc. , to achieve the effect of high operational reliability, perfect technical performance and reasonable principle

Inactive Publication Date: 2017-12-15
周丽
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, as the surge arrester withstands the continuous accumulation of overvoltage shocks, its performance will gradually deteriorate, mainly manifested in the increase of leakage current
This process is relatively slow and has a certain degree of concealment. If it is not discovered in time, breakdown failure is very likely to occur

Method used

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  • Zinc oxide lightning arrester deterioration protective device with wide adaptability

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Embodiment Construction

[0009] Such as figure 1 As shown, a widely adaptable zinc oxide arrester degradation protection device includes an arrester 1 and a compensating impedance element 2, one end of the arrester 1 is connected to the compensating impedance element 2, and the compensating impedance element 2 is connected in parallel with the increasing resistance switch 3 to compensate the impedance The element 2 is connected in parallel with the resistance increasing switch 3 and then connected in series with the control unit 4 , one end of the control unit 4 is connected with the current transformer 5 , and the other end of the power transformer 5 is connected with the compensating impedance element 2 .

[0010] The compensating impedance element 2 is a low voltage arrester.

[0011] The compensation impedance element 2 is made of zinc oxide valve plate.

[0012] It works as follows:

[0013] The compensating impedance element 2 and the resistance increasing switch 3 inside the degradation prote...

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PUM

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Abstract

A widely adaptable zinc oxide arrester degradation protection device, including a arrester and a compensation impedance element, one end of the arrester is connected to the compensation impedance element, the compensation impedance element is connected in parallel with an increasing resistance switch, and the compensation impedance element is connected in parallel with the increasing resistance switch to control The units are connected in series, one end of the control unit is connected to the current transformer, and the other end of the power transformer is connected to the compensating impedance element; the advantages of the present invention are: reasonable principle, high operational reliability, adaptability to the characteristics of my country's power grid and lightning arrester The mechanism of failure and damage matches, the technical performance is perfect, and it can be popularized and used. It has built-in multiple communication protocols and is suitable for various communication environments.

Description

technical field [0001] The invention relates to the technical field of electric power protection, in particular to a widely adaptable zinc oxide arrester deterioration protection device. Background technique [0002] Zinc oxide arrester (hereinafter referred to as arrester) is a system overvoltage protection device commonly used in power grid operation. It plays a vital role in limiting the overvoltage generated by lightning, harmonics and operation in the system. However, as the surge arrester withstands the continuous accumulation of overvoltage shocks, its performance will gradually deteriorate, mainly manifested in the increase of leakage current. This process is relatively slow and has a certain degree of concealment. If it is not discovered in time, breakdown failure is very likely to occur. Contents of the invention [0003] In order to overcome the above problems, the present invention adopts the following technical solutions: [0004] A widely adaptable zinc oxi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04H02H9/00
CPCH02H9/04H02H9/005
Inventor 周丽
Owner 周丽
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