CN103823096A - Overvoltage on-line monitoring device - Google Patents
Overvoltage on-line monitoring device Download PDFInfo
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- CN103823096A CN103823096A CN201210462649.6A CN201210462649A CN103823096A CN 103823096 A CN103823096 A CN 103823096A CN 201210462649 A CN201210462649 A CN 201210462649A CN 103823096 A CN103823096 A CN 103823096A
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- overvoltage
- current transformer
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Abstract
本发明涉及电力系统领域，尤其涉及一种过电压在线监测装置，包括与高压母线连接的电流互感器、通过同轴电缆与电流互感器连接的信号触发电路以及信号处理电路、分别与触发电路以及信号处理电路连接的数据采集卡以及与数据采集卡连接的工控机。这种在线监测系统安全性高且长期运行可靠性好。
The present invention relates to the field of power systems, in particular to an overvoltage on-line monitoring device, comprising a current transformer connected to a high-voltage bus, a signal trigger circuit and a signal processing circuit connected to the current transformer through a coaxial cable, and the trigger circuit and the signal processing circuit respectively. A data acquisition card connected with the signal processing circuit and an industrial computer connected with the data acquisition card. This online monitoring system has high security and good long-term operation reliability.
Description
Technical field
The present invention relates to field of power, relate in particular to a kind of on-line overvoltage monitor.
Background technology
Modern power systems operating experience and research shows, superpotential is to cause the main cause of line insulation damage accident, is also the deciding factor of selecting insulation of electrical installation intensity.Although electric system has a series of overvoltage protection measures such as lightning rod, lightning conducter, lightning arrester and lightning protection (earth mat), superpotential phenomenon still happens occasionally and causes a series of accidents such as electrical equipment punctures, electric discharge, flashover, blast.Superpotential on-line monitoring can be realized online seizure and the real-time analysis of over-voltage waveform, for Overvoltage inverting and improvement and Study on Numerical Simulation provide the real firsthand data.Therefore superpotential Real-Time Monitoring and analysis are had to extremely important meaning.
The method that the on-line overvoltage monitor of prior art obtains voltage signal mainly adopts high-voltage bleeder to obtain overvoltage signal, but while being parallel to operation of power networks for a long time due to high-voltage bleeder, between high pressure and low-voltage arm, be directly electrically connected, so the electrical safety performance of detection system is poor, and high-voltage bleeder easily generation vibration in measuring process, so the reliability of high-voltage bleeder long-time running is lower.
Summary of the invention
A technical matters to be solved by this invention is: the on-line overvoltage monitor that a kind of safe and long-time running good reliability is provided.
The technical solution adopted in the present invention is: a kind of on-line overvoltage monitor, comprises the current transformer being connected with high voltage bus, the signal trigger circuit that are connected with current transformer by concentric cable and signal processing circuit, the respectively data collecting card that is connected with trigger circuit and signal processing circuit and the industrial computer being connected with data collecting card.
Adopt above structure compared with prior art, the present invention has the following advantages: adopt current transformer to replace high-voltage bleeder, like this because of the insulation system more complicated of current transformer, so safe, and be not easy to produce vibration after using for a long time it, so reliability is also higher.
As preferably, it also comprises an overvoltage protector, and described overvoltage protector is serially connected between current transformer and data collecting card.Between current transformer and data collecting card, be connected in series an overvoltage protector, can prevent like this invasion of superpotential to follow-up data collecting card, play a very good protection.
Accompanying drawing explanation
Fig. 1 is that the circuit of on-line overvoltage monitor of the present invention connects block diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described further, but the present invention is not limited only to following embodiment.
As shown in the figure: a kind of on-line overvoltage monitor, is characterized in that: comprise the current transformer being connected with high voltage bus, the signal trigger circuit that are connected with current transformer by concentric cable and signal processing circuit, the respectively data collecting card that is connected with trigger circuit and signal processing circuit and the industrial computer being connected with data collecting card.
It also comprises an overvoltage protector, and described overvoltage protector is serially connected between current transformer and data collecting card.Described overvoltage protector is arranged between the parallel connection entirety of signal trigger circuit and signal processing circuit composition and data collecting card.
Claims (2)
1. an on-line overvoltage monitor, is characterized in that: comprise the current transformer being connected with high voltage bus, the signal trigger circuit that are connected with current transformer by concentric cable and signal processing circuit, the respectively data collecting card that is connected with trigger circuit and signal processing circuit and the industrial computer being connected with data collecting card.
2. overvoltage circuit pick-up unit according to claim 1, is characterized in that: it also comprises an overvoltage protector, and described overvoltage protector is serially connected between current transformer and data collecting card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210462649.6A CN103823096A (en) | 2012-11-16 | 2012-11-16 | Overvoltage on-line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210462649.6A CN103823096A (en) | 2012-11-16 | 2012-11-16 | Overvoltage on-line monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103823096A true CN103823096A (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210462649.6A Pending CN103823096A (en) | 2012-11-16 | 2012-11-16 | Overvoltage on-line monitoring device |
Country Status (1)
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| CN (1) | CN103823096A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330612A (en) * | 2014-11-27 | 2015-02-04 | 国家电网公司 | Resonant overvoltage monitoring system and method |
| CN106645865A (en) * | 2016-09-19 | 2017-05-10 | 中国电力科学研究院 | Device for measuring corona current of high-voltage transmission line |
| CN112763932A (en) * | 2020-12-27 | 2021-05-07 | 西北工业大学 | Power monitoring system for small and medium-sized electric propulsion unmanned aerial vehicle |
-
2012
- 2012-11-16 CN CN201210462649.6A patent/CN103823096A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330612A (en) * | 2014-11-27 | 2015-02-04 | 国家电网公司 | Resonant overvoltage monitoring system and method |
| CN104330612B (en) * | 2014-11-27 | 2017-07-07 | 国家电网公司 | A kind of resonance overvoltage monitoring system and method |
| CN106645865A (en) * | 2016-09-19 | 2017-05-10 | 中国电力科学研究院 | Device for measuring corona current of high-voltage transmission line |
| CN106645865B (en) * | 2016-09-19 | 2020-07-24 | 中国电力科学研究院 | Device for measuring corona current of high-voltage transmission line |
| CN112763932A (en) * | 2020-12-27 | 2021-05-07 | 西北工业大学 | Power monitoring system for small and medium-sized electric propulsion unmanned aerial vehicle |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140528 |