CN202939236U - Arrester on-line monitor - Google Patents
Arrester on-line monitor Download PDFInfo
- Publication number
- CN202939236U CN202939236U CN 201220579310 CN201220579310U CN202939236U CN 202939236 U CN202939236 U CN 202939236U CN 201220579310 CN201220579310 CN 201220579310 CN 201220579310 U CN201220579310 U CN 201220579310U CN 202939236 U CN202939236 U CN 202939236U
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- Prior art keywords
- arrester
- current
- data processing
- lightning arrester
- resistive
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Abstract
The utility model discloses an arrester on-line monitor. The monitor is electrically connected onto the arrester via a signal line, and comprises a signal acquisition module, a data processing module and a display module, wherein the signal acquisition module transmits resistive fundamental wave current signals in arrester leakage current to the data processing module; and the data processing module displays the changes of the ratio of the resistive fundamental wave current to the resistive current via the display module. The change of the resistive current fundamental wave ratio is used for judging the working condition of the arrester, such that harmonic interference of the grid can not only be effectively restrained, but the actual operation condition of the arrester can be reflected more truly.
Description
Technical field
The utility model relates to a kind of monitor, is specifically related to a kind of lightning arrester on-line monitoring instrument.
Background technology
Lightning arrester is widely used in the industry-by-industry of production, life, particularly, in electric system, due to industry singularity and security requirement, needs to install, use a large amount of lightning arresters.The at present domestic detection for lightning arrester is generally application also, and this just causes the overvoltage protection device running status such as lightning arrester and aging performance thereof to have no way of finding out about it, and serious threat is to the safe operation of electrical network.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provide a kind of can Real-Time Monitoring lightning arrester running status lightning arrester on-line monitoring instrument.
A kind of lightning arrester on-line monitoring instrument, by signal wire, be connected electrically on lightning arrester, comprise signal acquisition module, data processing module and display module, described signal acquisition module is imported resistive fundamental current signal in the lightning arrester Leakage Current into data processing module, and described data processing module shows the changing value of the shared current in resistance property ratio of resistive fundamental current by display module.
Due under the effect of sine voltage, in the resistance electric current of lightning arrester, only have the fundamental current acting to produce power consumption, and, regardless of harmonic voltage, resistive fundamental current is all a definite value, so carry out the current in resistance property decomposition by extracting first-harmonic, can obtain the first-harmonic of current in resistance property.The utility model judges that according to the variation of resistive current first harmonics proportion the working condition of lightning arrester not only can effectively suppress the humorous wave interference of electrical network, can reflect more really the actual conditions of lightning arrester operation.
The accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Embodiment
Embodiment 1
Referring to Fig. 1, a kind of lightning arrester on-line monitoring instrument that the utility model provides, by signal wire, be connected electrically on lightning arrester, comprise signal acquisition module 1, data processing module 2 and display module 3, once Leakage Current appears in lightning arrester, signal acquisition module 1 utilizes the first-harmonic method to find out the first-harmonic part of current in resistance property from the lightning arrester Leakage Current, import signal into data processing module 2, data processing module 2 judges the working condition of lightning arrester according to the variation of resistive current first harmonics proportion, and show by display module 3, the operator on duty can judge by the backstage computer working condition of lightning arrester.
Claims (1)
1. a lightning arrester on-line monitoring instrument, by signal wire, be connected electrically on lightning arrester, it is characterized in that: comprise signal acquisition module, data processing module and display module, described signal acquisition module is imported resistive fundamental current signal in the lightning arrester Leakage Current into data processing module, and described data processing module shows the changing value of the shared current in resistance property ratio of resistive fundamental current by display module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220579310 CN202939236U (en) | 2012-11-06 | 2012-11-06 | Arrester on-line monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220579310 CN202939236U (en) | 2012-11-06 | 2012-11-06 | Arrester on-line monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202939236U true CN202939236U (en) | 2013-05-15 |
Family
ID=48323467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220579310 Expired - Fee Related CN202939236U (en) | 2012-11-06 | 2012-11-06 | Arrester on-line monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202939236U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954632A (en) * | 2016-07-01 | 2016-09-21 | 国网江苏省电力公司宿迁供电公司 | Zinc oxide lightning arrester on-line monitoring and diagnostic method |
-
2012
- 2012-11-06 CN CN 201220579310 patent/CN202939236U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954632A (en) * | 2016-07-01 | 2016-09-21 | 国网江苏省电力公司宿迁供电公司 | Zinc oxide lightning arrester on-line monitoring and diagnostic method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20141106 |
|
| EXPY | Termination of patent right or utility model |