CN104297587B - A kind of direct-current transmission converter valve lightning arrester monitoring device and monitoring method - Google Patents
A kind of direct-current transmission converter valve lightning arrester monitoring device and monitoring method Download PDFInfo
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- CN104297587B CN104297587B CN201410497498.7A CN201410497498A CN104297587B CN 104297587 B CN104297587 B CN 104297587B CN 201410497498 A CN201410497498 A CN 201410497498A CN 104297587 B CN104297587 B CN 104297587B
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Abstract
The present invention relates to a kind of direct-current transmission converter valve lightning arrester monitoring device and monitoring method.A kind of direct-current transmission converter valve lightning arrester monitoring device, including the monitoring circuit between arrester end and shading ring, monitoring circuit is used to detect arrester electric current, string is equipped with least 1 pair plate electrode with air gap in monitoring circuit, and breakdown, which whether occurs, by detecting plate electrode monitors lightning arrestor movement situation.A kind of direct-current transmission converter valve arrester monitoring method, judges whether arrester acts by detecting plate electrode punch-through.Since change of current valve arrester is installed in the converter valve Room, voltage is very high on arrester, and the electromagnetic environment residing for it is extremely complex, and electromagnetic interference is serious.Monitoring circuit does not have any electronic component in the present invention, and installed between arrester end and shading ring, these all substantially increase the antijamming capability of monitoring device.
Description
Technical field
The present invention relates to a kind of direct-current transmission converter valve lightning arrester monitoring device and monitoring method, belongs to power equipment monitoring
Technical field.
Background technology
In recent years, D.C. high voltage transmission achieves fast development, and converter valve is that the core in high voltage direct current transmission project is set
Standby, its safe and stable operation to direct current transportation plays a crucial role.Again since converter valve is very expensive, work
Both ends in journey in converter valve need lightning arrester connected in parallel to be protected.In order to make the staff of current conversion station, the change of current can be understood in time
The operating condition of valve arrester, need to be monitored the state of arrester.
The method of monitoring has many kinds, and at present, relatively common is to install to be made of electronic component beside arrester
Device be monitored.Since change of current valve arrester is installed in the converter valve Room, residing electromagnetic environment is extremely complex, and electricity
Press grade again high, electromagnetic interference is very serious.Therefore, it is that the electromagnetic environment in the valve Room is sometimes the shortcomings that this monitoring technology
Electronic component normal work in severe jamming monitoring device, causes the deceptive information of lightning arrestor movement, is run to current conversion station
Personnel make troubles.
In addition, the traditional approach of detection arrester electric current using be directly connected to ammeter either by the way of voltmeter or
It is monitored using point discharge device, but since the electric current on arrester is very big and change is relatively acutely rapider, is made
With ammeter either voltmeter when ammeter or voltmeter between can flow through very big curtage immediately, may make
Into the damage of instrument；Moreover, although point discharge device can accurately detect arrester electric current, the installation cost is higher,
Popularization uses highly difficult.
The content of the invention
The object of the present invention is to provide a kind of direct-current transmission converter valve lightning arrester monitoring device and monitoring method, to solve
The problem of existing monitoring device is easily by electromagnetic interference.
To achieve the above object, the solution of the present invention includes：A kind of direct-current transmission converter valve lightning arrester monitoring device, including
For detecting the monitoring circuit of arrester electric current, gone here and there in monitoring circuit and be equipped with least a pair of plate electrode with air gap,
Whether breakdown occurs to monitor lightning arrestor movement by detecting the plate electrode.
Monitoring circuit is in series with coil by plate electrode, and coil is non-contact to be arranged on arrester binding post.
Dielectric between plate electrode is air.
Monitoring device further includes the light-sensitive element for detecting the breakdown caused optical effect of plate electrode.
Monitoring device further includes optical fiber, and light-sensitive element is installed on away from the plate electrode, and optical fiber one end, which is arranged on, to be leaned on
At nearly plate electrode, other end connection light-sensitive element.
Isolated between coil and the binding post of arrester using dielectric.
Present invention additionally comprises a kind of direct-current transmission converter valve based on above-mentioned direct-current transmission converter valve lightning arrester monitoring device
Arrester monitoring method, by detect plate electrode it is breakdown when phenomenon monitor whether arrester acts；When arrester moves
When making, plate electrode is breakdown, and when Analyse of Reject-acting Arrester, plate electrode is not breakdown.
Judge whether plate electrode is breakdown whether producing optical signal by detecting the air gap between plate electrode；
The optical signal transmission is given the light-sensitive element being arranged far from plate electrode by optical fiber.
The main devices of this monitoring device are the plate electrodes for having the air gap, can recover to make automatically after breakdown
With, avoid often replace plate electrode, reduce cost.
This monitoring device monitors arrester electric current by puncturing the optical signal produced, and optical signal can be examined to intuitive and convenient
Measure and, compared with by way of other signal monitorings, be more prone to intuitively monitor.
This monitoring device utilizes the principle that plate electrode can puncture when loading big voltage suddenly, when plate electrode punctures
When, the air gap between plate electrode has an optical signal, light-sensitive element according to optical signal can accurate measurements arrester electric current,
Avoid the problem of being burnt out using ammeter or the instrument that may bring of voltmeter measurement, it also avoid point discharge device into
This is higher, it is difficult to the problem of popularizing.
Remote transmission of this monitoring device using optical fiber into traveling optical signal, in order to avoid being brought at plate electrode
Hidden danger for security, has safety guarantee to the person and device, also improves the reliability of this monitoring device.
This monitoring device only installs plate electrode on monitoring circuit, is fitted without other electronic components, avoids
Electromagnetic environment interference monitoring device in the valve Room and the arrester malfunction brought, so, this monitoring device strong antijamming capability；
It is economical and practical and this monitoring device is simple in structure.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Embodiment
The present invention will be further described in detail below in conjunction with the accompanying drawings.
A kind of direct-current transmission converter valve lightning arrester monitoring device, including for detecting the monitoring circuit of arrester electric current, prison
String is equipped with least a pair of plate electrode with air gap in survey time road, and breakdown occurs by detecting plate electrode keeps away to monitor
Whether thunder device acts.
A kind of direct-current transmission converter valve arrester monitoring side based on above-mentioned direct-current transmission converter valve lightning arrester monitoring device
Method, by detect plate electrode it is breakdown when phenomenon monitor whether arrester acts；When lightning arrestor movement, plate electrode
Breakdown, when Analyse of Reject-acting Arrester, plate electrode is not breakdown.
Based on above technical scheme, with reference to attached drawing, provide with next embodiment.
Plate electrode in this monitoring device must have the air gap, because can recover automatically after breakdown.
A kind of direct-current transmission converter valve lightning arrester monitoring device, is mainly made of two parts, i.e. monitoring circuit 1, detection is hit
The light-sensitive element 5 of optical effect when wearing.Monitoring circuit 1 is installed between arrester end and shading ring, and arrester binding post is worn
Monitoring circuit 1 is crossed, monitoring circuit 1 is by 3 in series circuits of plate electrode 2 and coil.Coil 3 is non-contact be arranged in it is lightning-arrest
On device binding post, both are isolated using dielectric.
Light-sensitive element 5 can be positioned close at plate electrode, so can directly receive optical signal；Close to plate electrode
May be than relatively hazardous, light-sensitive element 5 can also be arranged far from the place of plate electrode, carry out light using optical fiber in this case
The remote transmission of signal.
As shown in Figure 1,4 one end of optical fiber is positioned close at plate electrode 2, the other end is installed at light-sensitive element 5.It is used
Optical fiber is common multimode fibre, without other particular/special requirements.The projection of optical fiber both ends shown in figure connects for ordinary optic fibre
Head.
Electric current on arrester flows through monitoring circuit 1, when Analyse of Reject-acting Arrester, the leakage current very little on arrester,
The voltage that the both ends of 1 middle plateform electrode 2 of monitoring circuit induce also very little.When lightning arrestor movement, the electric current on arrester is anxious
Increase severely big, the magnetic flux Φ through monitoring circuit 1 also increases rapidly, and the variable quantity of magnetic flux also increases rapidly.
In formula 1, t is the time.
According to formula (1), become larger suddenly in the voltage U that 2 both ends of plate electrode induce, by the sky between plate electrode 2
Gas gap breakdown, by detect the air gap between plate electrode 2 produce optical signal whether come judge plate electrode whether by
Breakdown, optical signal caused by breakdown are transferred to away from the light-sensitive element 5 at plate electrode by optical fiber 4.Light-sensitive element 5 passes through
Opto-electronic conversion, the action message of arrester is reported, that is, completes whole monitoring.
Specific embodiment is presented above, but the present invention is not limited to described embodiment.The base of the present invention
This thinking is above-mentioned basic scheme, and for those of ordinary skill in the art, teaching, designs various changes according to the present invention
The model of shape, formula, parameter simultaneously need not spend creative work.It is right without departing from the principles and spirit of the present invention
The change, modification, replacement and modification that embodiment carries out are still fallen within protection scope of the present invention.
Claims (4)
1. a kind of direct-current transmission converter valve lightning arrester monitoring device, it is characterised in that the monitoring device includes keeping away for detection
The monitoring circuit of thunder device electric current, string is equipped with least a pair of plate electrode with air gap in monitoring circuit, by detecting
Whether plate electrode generation breakdown is stated to monitor lightning arrestor movement；
The monitoring circuit is in series by the plate electrode and coil, and the coil is non-contact to be arranged in arrester binding post
On；
The monitoring device further includes the light-sensitive element for detecting the breakdown caused optical effect of plate electrode；The prison
Survey device and further include optical fiber, light-sensitive element is installed on away from the plate electrode, and described optical fiber one end is positioned close to tablet
At electrode, other end connection light-sensitive element；The both ends of optical fiber are equipped with projection, and the projection is fiber connector.
2. direct-current transmission converter valve lightning arrester monitoring device according to claim 1, it is characterised in that the coil and keep away
Isolated between the binding post of thunder device using dielectric.
A kind of 3. direct-current transmission converter valve arrester based on direct-current transmission converter valve lightning arrester monitoring device described in claim 1
Monitoring method, it is characterised in that by detect plate electrode it is breakdown when phenomenon monitor whether arrester acts；When lightning-arrest
When device acts, plate electrode is breakdown, and when Analyse of Reject-acting Arrester, plate electrode is not breakdown.
4. direct-current transmission converter valve arrester monitoring method according to claim 3, it is characterised in that by detecting tablet
Judge whether plate electrode is breakdown whether the air gap between electrode produces optical signal；Optical fiber is by the optical signal transmission
To the light-sensitive element being arranged far from plate electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410497498.7A CN104297587B (en) | 2014-09-25 | 2014-09-25 | A kind of direct-current transmission converter valve lightning arrester monitoring device and monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410497498.7A CN104297587B (en) | 2014-09-25 | 2014-09-25 | A kind of direct-current transmission converter valve lightning arrester monitoring device and monitoring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104297587A CN104297587A (en) | 2015-01-21 |
| CN104297587B true CN104297587B (en) | 2018-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410497498.7A Active CN104297587B (en) | 2014-09-25 | 2014-09-25 | A kind of direct-current transmission converter valve lightning arrester monitoring device and monitoring method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107861081A (en) * | 2017-06-16 | 2018-03-30 | 中国南方电网有限责任公司超高压输电公司广州局 | A kind of valve arrester performeter checking instrument |
| CN110927440A (en) * | 2019-12-18 | 2020-03-27 | 西安西电电力系统有限公司 | Lightning arrester counter and system for direct current transmission converter valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3469188A (en) * | 1966-07-13 | 1969-09-23 | Gen Electric | Combination discharge counter and grading current measuring means for a lightning arrester |
| CN2283262Y (en) * | 1997-04-04 | 1998-06-03 | 天津市电力工业局高压供电公司 | Electrical leakage, discharge monitor for lightning arrester |
| CN201654107U (en) * | 2010-03-02 | 2010-11-24 | 毛慧明 | Online monitor for explosion-proof type lightning arrester |
| CN102608400A (en) * | 2012-04-01 | 2012-07-25 | 河南省电力公司驻马店供电公司 | Online monitoring device of lightning arrester |
| CN204188719U (en) * | 2014-09-25 | 2015-03-04 | 许继电气股份有限公司 | A kind of direct-current transmission converter valve lightning arrester monitoring device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60125569A (en) * | 1983-12-09 | 1985-07-04 | Fuji Electric Corp Res & Dev Ltd | Testing method of multithunder operating duty of lightning arrester |
-
2014
- 2014-09-25 CN CN201410497498.7A patent/CN104297587B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3469188A (en) * | 1966-07-13 | 1969-09-23 | Gen Electric | Combination discharge counter and grading current measuring means for a lightning arrester |
| CN2283262Y (en) * | 1997-04-04 | 1998-06-03 | 天津市电力工业局高压供电公司 | Electrical leakage, discharge monitor for lightning arrester |
| CN201654107U (en) * | 2010-03-02 | 2010-11-24 | 毛慧明 | Online monitor for explosion-proof type lightning arrester |
| CN102608400A (en) * | 2012-04-01 | 2012-07-25 | 河南省电力公司驻马店供电公司 | Online monitoring device of lightning arrester |
| CN204188719U (en) * | 2014-09-25 | 2015-03-04 | 许继电气股份有限公司 | A kind of direct-current transmission converter valve lightning arrester monitoring device |
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| CN104297587A (en) | 2015-01-21 |
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