CN202794436U - Insulated on-line monitor device for zinc oxide lightning arrester - Google Patents
Insulated on-line monitor device for zinc oxide lightning arrester Download PDFInfo
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- CN202794436U CN202794436U CN 201220199222 CN201220199222U CN202794436U CN 202794436 U CN202794436 U CN 202794436U CN 201220199222 CN201220199222 CN 201220199222 CN 201220199222 U CN201220199222 U CN 201220199222U CN 202794436 U CN202794436 U CN 202794436U
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- acquisition module
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Abstract
The utility model relates to an insulated on-line monitor device for a zinc oxide lightning arrester. The device comprises a central control circuit, a power supply circuit, a signal acquisition module and a host computer, wherein the central control circuit drives operation of each module, the power supply circuit is connected with the central control circuit to provide electric power for the on-line monitor device, the signal acquisition module is connected with the central control circuit and comprises a voltage signal acquisition module and a current signal acquisition module, and the host computer is connected with the central control circuit via a communication interface to further process detection data. According to the utility model, real-time monitor of leakage total current, resistive current, motion times and motion time of the zinc oxide lightning arrester is realized, change states of the leakage total current, the resistive current and the like of the zinc oxide lightning arrester are understood, and accidents including lightning arrester burnout and power failure caused by increases of the leakage total current and the resistive current are reduced.
Description
Technical field
The utility model relates to a kind of on-Line Monitor Device, especially a kind of insulation line monitoring device of Zinc-Oxide Arrester.
Background technology
Lightning arrester is the important electrical that the protection power equipment is avoided overvoltage injury in the electrical network, and its reliability of operation will directly affect the safety of electric system.In the past, usually by artificial every day or make an inspection tour weekly discharge counter and carry out, can't in time find fault to the monitoring of lightning arrester, more be difficult to find to produce the larger defective of fault.Degradation faster lightning arrester might just be blasted within a tour cycle fully, in recent years, in electric system similar explosion accident has occured repeatedly, has not only brought huge economic loss, and serious threat is to the safe operation of electrical network.Lightning arrester is implemented on-line monitoring, can find early and fix a breakdown on the one hand, avoid occuring Explosion of on Arrester, perfect the safe operation early warning system of transformer substation arrester; On the other hand, can add up and realize data remote to leakage current of an arrester and action frequency, thereby detect effectively in time that lightning arrester inherent vice, especially valve body make moist, inner member is aging etc.Therefore, application lightning arrester on-Line Monitor Device is significant.
The study of the monitoring method time to the Zinc-Oxide Arrester operating condition is long, and detection method also has multiple, substantially all to survey leakage current as the basis, comprises following several:
1. total leakage current method
It is substantially constant that total leakage current method is based on the capacitive component of Leakage Current of Zinc-oxide Lightning Arresters, can think simply that the increase of its total current can reflect the growth pattern of its resistive current weight to a certain extent.The method is coarse, and sensitivity is lower.
2. current in resistance property third harmonic method
Current in resistance property third harmonic method is that total current is detected third-harmonic component through bandpass filter, obtains the current in resistance property peak value according to total current in resistance property of Zinc-Oxide Arrester and the certain proportionate relationship that is the resistive component of that subharmonic.Proportionate relationship presents different funtcional relationships because the lightning arrester characteristic of different manufacturers is different, therefore do not have versatility.
3. penalty method is measured current in resistance property
Penalty method still can only could be reacted the aging legitimate reading of lightning arrester by adding capacitive current compensation arrester resistance current component when current in resistance property becomes pi/2 phase poor with capacity current.
The utility model content
For solving the deficiency of above-mentioned prior art, the utility model provides a kind of New Zinc Oxide Lightning Arrester on-Line Monitor Device.
The technical solution of the utility model is:
A kind of Zinc-Oxide Arrester on-Line Monitor Device, comprise the central control circuit that drives each module running, with central control circuit be connected to provide the power circuit of on-Line Monitor Device electric energy, the host computer that is connected with central control circuit in order to the signal acquisition module that detects and by communication interface that is connected with central control circuit is in order to further process Monitoring Data, described signal acquisition module comprises PT voltage signal acquisition module, moisture signal acquisition module and arrester ground current sensor.
Described central control circuit is connected with current sensor, PT voltage signal, gathers amplifying circuit, current analog signal collection amplifying circuit realization voltage signal, leakage current signal access by voltage analog signal;
Described optical-fibre communications circuit selects serial ports to turn multimode optoelectronic transceiver integrated module, and described Zinc-Oxide Arrester on-line monitoring terminal was connected external fiber communication interface realization length apart from 485 communications with host computer;
Described liquid crystal display is selected serial ports TFT liquid crystal display.
Compared with prior art, the novel beneficial effect of this use is as described below:
Pass through the utility model, leakage total current, current in resistance property, action frequency, the actuation time of Real-Time Monitoring Zinc-Oxide Arrester have been realized, understand Zinc-Oxide Arrester and leak the changing conditions such as total current, current in resistance property, reduce the generation of the accidents such as the lightning arrester that causes because of leakage total current, current in resistance property rising etc. burns, power failure.The accident of stopping cause the to have a power failure social harmful effect that causes and the production loss of social undertakings.
For ease of to the utility model purpose, technical characterictic and effect thereof, do further understanding and understand, hereby cooperate graphicly for embodiment, be described in detail as follows:
Description of drawings
Fig. 1 is the structural representation of this New Zinc Oxide Lightning Arrester on-Line Monitor Device.
Embodiment
Below in conjunction with accompanying drawing and example this novel embodiment is further described in detail, but should limit protection domain of the present utility model with this.
See also the structural representation of this New Zinc Oxide Lightning Arrester of Fig. 1 on-Line Monitor Device.This New Zinc Oxide Lightning Arrester on-Line Monitor Device comprises the central control circuit that drives each module running, the power circuit that the on-Line Monitor Device electric energy is provided to provide with central control circuit, with central control circuit be connected in order to the monitoring the signal picker module, and the host computer that is connected with central control circuit by communication interface is in order to further process Monitoring Data, described signal acquisition module comprises that voltage analog signal gathers amplifying circuit with collection PT voltage signal and moisture signal, and current analog signal gathers the ground current that amplifying circuit is sensed to gather the arrester ground current sensor.
Carry out exchanges data by the optical-fibre communications circuit between described Zinc-Oxide Arrester on-line monitoring terminal and the outside host computer, the optical-fibre communications circuit selects serial ports to turn multimode optoelectronic transceiver integrated module.This kind communication interface can improve communication speed, improves the communication antijamming capability, prolong communication distance, ensures the communication reliability.
Described central control circuit is selected the low-power consumption microprocessor.Described liquid crystal display is selected serial ports TFT liquid crystal display, and it has at a high speed, the characteristics of high brightness, high-contrast, is one of at present best LCD color display apparatus, and DSTN-LCD more commonly used was more true to nature.
The Zinc-Oxide Arrester on-Line Monitor Device gathers leakage current signal, PT voltage signal, moisture signal simultaneously, reaches the purpose of monitoring simultaneously electric signal and environmental information, ensures the communication consistance.
As staff during in Zinc-Oxide Arrester on-Line Monitor Device the place ahead, the infrared ray that active infrared hot type induction module is launched reflects by human body, the active infrared human body induction module receives the infrared signal of reflection, after the central control circuit analyzing and processing, the gauge tap power circuit is opened the TFT LCD backlight, reaches the purpose of automatic control display device backlight switch, raising display life.
The monitoring state identification LEDs by the variation of LED light color, is beneficial to the operating condition that staff's naked eyes are directly judged Zinc-Oxide Arrester.
Being the preferred embodiment of utility model only in sum, is not to limit practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should be technology category of the present utility model.
Claims (6)
1. the insulation line monitoring device of a Zinc-Oxide Arrester, it is characterized in that, this device comprise the running of driving power circuit and signal acquisition module central control circuit, with central control circuit be connected to provide the power circuit of on-Line Monitor Device electric energy, the signal acquisition module that is connected with central control circuit and the host computer that is connected with central control circuit by communication interface be in order to further process and detect data, described signal acquisition module comprises voltage signal acquisition module and current signal collection module.
2. on-Line Monitor Device as claimed in claim 1 is characterized in that, described device also is provided with a display device and connects with central control circuit.
3. on-Line Monitor Device as claimed in claim 2 is characterized in that, described device also is provided with an active infrared hot type induction module and is connected with central control circuit, to start display device.
4. on-Line Monitor Device as claimed in claim 1 is characterized in that, described device also is provided with a monitoring state identification LEDs.
5. on-Line Monitor Device as claimed in claim 1 is characterized in that, described device also comprises a D/A converter module in signal acquisition module, and described signal acquisition module is connected with central control circuit by D/A converter module.
6. on-Line Monitor Device as claimed in claim 1 is characterized in that, described communication interface is fiber optic data communication interface, selects serial ports to turn multimode optoelectronic transceiver integrated module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220199222 CN202794436U (en) | 2012-05-03 | 2012-05-03 | Insulated on-line monitor device for zinc oxide lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220199222 CN202794436U (en) | 2012-05-03 | 2012-05-03 | Insulated on-line monitor device for zinc oxide lightning arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202794436U true CN202794436U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220199222 Expired - Fee Related CN202794436U (en) | 2012-05-03 | 2012-05-03 | Insulated on-line monitor device for zinc oxide lightning arrester |
Country Status (1)
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| CN (1) | CN202794436U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630769A (en) * | 2013-07-11 | 2014-03-12 | 保定市超人电子有限公司 | Online zinc oxide arrester monitoring instrument |
| CN103675615A (en) * | 2013-11-13 | 2014-03-26 | 国家电网公司 | Ultra-wideband detection device for realizing zinc oxide arrester partial discharge detection and method thereof |
| CN104142421A (en) * | 2013-05-07 | 2014-11-12 | 常州顺创电气科技有限公司 | Substation equipment insulation online monitoring system and working method thereof |
| CN104808050A (en) * | 2015-05-26 | 2015-07-29 | 南京信息工程大学 | Method and device for monitoring resistive current of voltage-limiting type surge protection device on line |
-
2012
- 2012-05-03 CN CN 201220199222 patent/CN202794436U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142421A (en) * | 2013-05-07 | 2014-11-12 | 常州顺创电气科技有限公司 | Substation equipment insulation online monitoring system and working method thereof |
| CN103630769A (en) * | 2013-07-11 | 2014-03-12 | 保定市超人电子有限公司 | Online zinc oxide arrester monitoring instrument |
| CN103675615A (en) * | 2013-11-13 | 2014-03-26 | 国家电网公司 | Ultra-wideband detection device for realizing zinc oxide arrester partial discharge detection and method thereof |
| CN104808050A (en) * | 2015-05-26 | 2015-07-29 | 南京信息工程大学 | Method and device for monitoring resistive current of voltage-limiting type surge protection device on line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20140503 |