CN102620860A - Metal oxide varistor (MOV) optical fiber online temperature measurement device applied to fault current limiter - Google Patents
Metal oxide varistor (MOV) optical fiber online temperature measurement device applied to fault current limiter Download PDFInfo
- Publication number
- CN102620860A CN102620860A CN2012101067673A CN201210106767A CN102620860A CN 102620860 A CN102620860 A CN 102620860A CN 2012101067673 A CN2012101067673 A CN 2012101067673A CN 201210106767 A CN201210106767 A CN 201210106767A CN 102620860 A CN102620860 A CN 102620860A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- mov
- temperature
- fault current
- current limiter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a metal oxide varistor (MOV) optical fiber online temperature measurement device applied to a fault current limiter, which introduces the optical fiber online temperature technology to solve the problem of power supply and energy taking of a monitoring device in a high electric field application occasion and the problem of anti-interference of the device under a strong electromagnetic environment, achieves real-time and accurate monitoring on the temperature of an MOV body in the fault current limiter, and improves operation reliability of the fault current limiter. The MOV optical fiber online temperature measurement device applied to the fault current limiter comprises a plurality of fluorescence type optical fiber temperature measurement probes, a multi-path fluorescence optical fiber signal demodulator, an optical fiber converter, a demodulator power supply energy-taking CT, an MOV temperature online monitoring working station and an optical fiber communication bus. The fluorescence type optical fiber temperature measurement probes are installed on the MOV body and connected with the multi-path fluorescence optical fiber signal demodulator through optical fibers. The multi-path fluorescence optical fiber signal demodulator takes electricity from a high-potential high-voltage line through the demodulator power source energy-taking CT and is connected with the optical fiber converter through the communication bus. The optical fiber converter is communicated with the MOV temperature online monitoring working station through the optical fiber communication bus.
Description
Technical field
The present invention relates to a kind of optical fiber temperature measurement on-line device, relate in particular to a kind of MOV optical fiber temperature measurement on-line device that is applied to fault current limiter that is used for the restriction of short-circuit fault of power system electric current.
Background technology
Along with the continuous expansion of electric system transmission capacity, the grid short circuit levels of current also constantly increases, and limiting short-circuit current has become in the modern power network development a unavoidable great technology and economic problems.And based on the economical fault current limiter of the series resonance of MOV; Not only can be restricted to reduced levels to short-circuit current; And have the operational reliability height, need not to add control and realize automatic switching, cheap and technical and economic performance obviously advantage such as good in high-voltage fence, having obtained application.High capacity MOV is the gordian technique of the economical fault current limiter of series resonance, and the quality of this technology has determined the quality of fault current limiter technology.Simultaneously, high capacity MOV also is the vital dissipative cell during generator amature demagnetization and overvoltage protection are used.
Large capacity metal oxide pressure-limiting device MOV is the critical component of series resonance-type fault current limiter.When system's failed because, the MOV that is connected in parallel on the capacitor two ends is as the first heavily protection, and quick acting with the residual voltage level of voltage limit at MOV, seals in system to reactor to suppress the first peak value of short-circuit current with capacitor short-circuit simultaneously.During the system failure, short-circuit current mainly flows through from MOV, and MOV must absorb huge short circuit energy at 40-100ms in the very short time, causes self-heating, body temperature moment rising.Energy is injected in the short circuit that MOV can bear and bulk temperature rising is limited, when temperature rise surpasses limit value, will cause the explosion of MOV valve block, has influence on the security of operation of fault current limiter and system.
Under system's normal condition, the series capacitor voltage is lower, only has minimum electric current to flow through the MOV that is connected in parallel on the capacitor two ends, and MOV is in thermal equilibrium state, generally can not occur the MOV temperature continue increase.But under the effect of long-term work voltage, the zinc oxide valve plate among the MOV is also as other insulating mediums, owing to the thermal effect of the leakage current that flows through it makes it that faint chemical change take place, thereby causes deterioration, aging.Its aging speed is relevant with several factors, comprising the temperature of MOV self.Along with its aging speed of MOV self increase in temperature also increases, obviously also can reduce the serviceable life of whole M OV.
Therefore, the temperature of real time on-line monitoring MOV body helps the operation maintenance personnel effectively to understand the running status of fault current limiter, and in time the discovering device potential safety hazard is significant for raising fault current limiter and reliability of system operation.But the present domestic MOV optical fiber real-time online temperature measuring equipment that also is not applied to fault current limiter.
Summary of the invention
The objective of the invention is to address the above problem; A kind of MOV optical fiber temperature measurement on-line device that is applied to fault current limiter is provided; It introduces the optical fiber temperature-measurement technology; Get the device anti-interference problem under ability problem and the forceful electric power magnetic environment with the power supply that solves monitoring device in the high electric field application scenario, realize real-time, the accurately monitoring of MOV body temperature in the fault current limiter, raising fault current limiter operational reliability.
For realizing above-mentioned purpose, the technical scheme that the present invention adopted is:
A kind of MOV optical fiber temperature measurement on-line device that is applied to fault current limiter; It comprises that some fluorescence formula optical fiber temperature-measurement probes, multichannel fluorescence optical fiber demodulator of PM signal PM, optic fiber converter, detuner power supply are got can CT, MOV temperature online monitor workstation and optical fiber communication bus; Wherein, Fluorescence formula optical fiber temperature-measurement probe is installed on the MOV body, and connects with multichannel fluorescence optical fiber demodulator of PM signal PM through optical fiber; Multichannel fluorescence optical fiber demodulator of PM signal PM is then got ability CT power taking on the high-tension line of noble potential through the detuner power supply; Multichannel fluorescence optical fiber demodulator of PM signal PM connects with optic fiber converter through communication bus, and optic fiber converter is then communicated by letter with MOV temperature online monitor workstation through the optical fiber communication bus.
Said MOV body is provided with heat radiation aluminum conducting ring, is processed with on it and buries the temperature probe straight trough underground, and fluorescence formula optical fiber temperature-measurement probe is embedded in the straight trough of the ZnO valve plate of being close to the MOV body.
Said communication bus is the CAN bus.
Said detuner power supply is got and can be adopted open-type low-voltage power Current Transformer by CT.
The present domestic MOV optical fiber real-time online temperature measuring equipment that also is not applied to fault current limiter; The present invention adopts noble potential line current CT to get ability power supply mode and fiber-optic signal transmission technology, has well solved the Insulation Problems of the MOV temperature monitoring is faced in the Fault Current Limiting Device power supply problem, anti-interference problem and signal-transmitting cable.
Owing to adopted technique scheme, the invention has the beneficial effects as follows: the device response speed is fast, long transmission distance, the temperature survey number of nodes is many, antijamming capability is strong.Can monitor MOV body valve block temperature in real time, preventing that valve block is overheated burns, and helps to improve the reliability of fault current limiter and Operation of Electric Systems.
Description of drawings
Fig. 1 is a MOV optical fiber temperature measurement on-line device architecture synoptic diagram of the present invention.
Fig. 2 is that fluorescence formula optical fiber temperature-measurement probe is embedded in the structural representation in the MOV body.
Wherein, 1. fluorescence formula optical fiber temperature-measurement is popped one's head in, 2. multichannel fluorescence optical fiber demodulator of PM signal PM; 3. optical fiber, 4. get can CT, 5. CAN bus for the detuner power supply; 6. optic fiber converter, 7. optical fiber communication bus, 8. MOV temperature online monitor workstation; 9. ZnO resistor valve sheet, 10., heat radiation aluminum conducting ring, 11. straight troughs.
Embodiment
Below in conjunction with the most preferred embodiment shown in the accompanying drawing the present invention is made further detailed description.
As shown in Figure 1, MOV optical fiber temperature measurement on-line device of the present invention comprises mainly that fluorescence formula optical fiber temperature-measurement probe 1, multichannel fluorescence optical fiber demodulator of PM signal PM 2, optic fiber converter 6, detuner power supply are got can CT4, MOV temperature online monitor workstation 8 and optical fiber communication bus 7.
Fluorescence formula optical fiber temperature-measurement probe 1 directly links to each other through optical fiber 3 with multichannel fluorescence optical fiber demodulator of PM signal PM 2; The longest distance of optical fiber 3 is 15 meters; Each fiber-optic signal all directly is connected with multichannel fluorescence optical fiber demodulator of PM signal PM 2, and the maximum quantity of fluorescence formula optical fiber temperature-measurement probe 1 is 12.
The power supply energy of multichannel fluorescence optical fiber demodulator of PM signal PM 2 and optic fiber converter 6 is got and can be obtained from the line current on the fault current limiter high voltage platform that is positioned at noble potential by CT4 through the detuner power supply.
For prolonging the communication distance of multichannel fluorescence optical fiber demodulator of PM signal PM 2 and MOV temperature online monitor workstation 8; Realize that through optic fiber converter 6 CAN buses 5 conversion of signals are that light signal transmits on optical fiber communication bus 7, the length of the communication distance between multichannel fluorescence optical fiber demodulator of PM signal PM 2 and the MOV temperature online monitor workstation 8 can reach more than the 5km.Owing to adopt optical fiber communication, solved the Insulation Problems of secondary singal transmission cable on the fault current limiter high voltage platform simultaneously.
The present domestic MOV optical fiber real-time online temperature measuring equipment that also is not applied to fault current limiter, the MOV optical fiber temperature measurement on-line device that the present invention realizes, long transmission distance, temperature survey node scale is big, antijamming capability is strong.
The represented embodiment of accompanying drawing only is a preferred embodiment of the present invention, is intended to further specify the present invention, is not to limit it.Allly carry out simple substitution, all within the rights protection scope of this patent according to above-mentioned literal and the disclosed content of accompanying drawing.
Claims (4)
1. MOV optical fiber temperature measurement on-line device that is applied to fault current limiter; It is characterized in that; It comprises that some fluorescence formula optical fiber temperature-measurement probes, multichannel fluorescence optical fiber demodulator of PM signal PM, optic fiber converter, detuner power supply are got can CT, MOV temperature online monitor workstation and optical fiber communication bus; Wherein, fluorescence formula optical fiber temperature-measurement probe is installed on the MOV body, and connects with multichannel fluorescence optical fiber demodulator of PM signal PM through optical fiber; Multichannel fluorescence optical fiber demodulator of PM signal PM is then got ability CT power taking on the high-tension line of noble potential through the detuner power supply; Multichannel fluorescence optical fiber demodulator of PM signal PM connects with optic fiber converter through communication bus, and optic fiber converter is then communicated by letter with MOV temperature online monitor workstation through the optical fiber communication bus.
2. the MOV optical fiber temperature measurement on-line device that is applied to fault current limiter as claimed in claim 1; It is characterized in that; Said MOV body is provided with heat radiation aluminum conducting ring, is processed with on it and buries the temperature probe straight trough underground, and fluorescence formula optical fiber temperature-measurement probe is embedded in the straight trough of the ZnO valve plate of being close to the MOV body.
3. the MOV optical fiber temperature measurement on-line device that is applied to fault current limiter as claimed in claim 1 is characterized in that said communication bus is the CAN bus.
4. the MOV optical fiber temperature measurement on-line device that is applied to fault current limiter as claimed in claim 1 is characterized in that, said detuner power supply is got and can be adopted open-type low-voltage power Current Transformer by CT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101067673A CN102620860A (en) | 2012-04-12 | 2012-04-12 | Metal oxide varistor (MOV) optical fiber online temperature measurement device applied to fault current limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101067673A CN102620860A (en) | 2012-04-12 | 2012-04-12 | Metal oxide varistor (MOV) optical fiber online temperature measurement device applied to fault current limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102620860A true CN102620860A (en) | 2012-08-01 |
Family
ID=46560910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101067673A Pending CN102620860A (en) | 2012-04-12 | 2012-04-12 | Metal oxide varistor (MOV) optical fiber online temperature measurement device applied to fault current limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102620860A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131971A (en) * | 2017-05-26 | 2017-09-05 | 福州华光天锐光电科技有限公司 | Novel rail transformer fluorescence type optical fiber temperature controller |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040071185A1 (en) * | 2002-10-09 | 2004-04-15 | Syracuse Steven J. | Apparatus and system for monitoring temperature of high voltage conductors |
| CN101504321A (en) * | 2008-12-31 | 2009-08-12 | 人民电器集团有限公司 | On-line monitoring system for switch cabinet state |
| CN202066926U (en) * | 2011-05-10 | 2011-12-07 | 南京工业职业技术学院 | Optical fiber sensor technology based on-line parameter monitoring system for capacitor of electric power system |
| CN202547824U (en) * | 2012-04-12 | 2012-11-21 | 山东电力研究院 | Online MOV (metal oxide varistor) fiber temperature measurement device for fault current limiter |
-
2012
- 2012-04-12 CN CN2012101067673A patent/CN102620860A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040071185A1 (en) * | 2002-10-09 | 2004-04-15 | Syracuse Steven J. | Apparatus and system for monitoring temperature of high voltage conductors |
| CN101504321A (en) * | 2008-12-31 | 2009-08-12 | 人民电器集团有限公司 | On-line monitoring system for switch cabinet state |
| CN202066926U (en) * | 2011-05-10 | 2011-12-07 | 南京工业职业技术学院 | Optical fiber sensor technology based on-line parameter monitoring system for capacitor of electric power system |
| CN202547824U (en) * | 2012-04-12 | 2012-11-21 | 山东电力研究院 | Online MOV (metal oxide varistor) fiber temperature measurement device for fault current limiter |
Non-Patent Citations (1)
| Title |
|---|
| 温惠 等: "金属氧化物限压器冷却结构设计及其三维温度场仿真分析", 《高电压技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131971A (en) * | 2017-05-26 | 2017-09-05 | 福州华光天锐光电科技有限公司 | Novel rail transformer fluorescence type optical fiber temperature controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111492549A (en) | Method for remote monitoring of a defective surge arrester disconnector and energy harvester for autonomous power supply of a monitoring device mounted on a surge arrester | |
| CN204216675U (en) | Based on power distribution cabinet electric leakage monitoring and the guard system of CAN formula | |
| Rao et al. | Performance requirements of present-day distribution transformers for Smart Grid | |
| CN106441618B (en) | A kind of high voltage isolator abnormal heating contact passive and wireless monitoring device | |
| Nuutinen et al. | LVDC rules–technical specifications for public LVDC distribution network | |
| CN205176222U (en) | On --spot detection device of flexible direct current transmission change of current valve submodule piece | |
| CN104979853A (en) | Power transmission line sectioned insulating overhead ground wire multi-point power accessing system based on electromagnetic induction | |
| CN211905534U (en) | Lightning arrester on-line monitoring remote transmission system | |
| CN101943722B (en) | On-line detecting device for surge protector | |
| CN105071337B (en) | Self feed back Intelligent electric leakage protects control device and its control method | |
| CN103278733A (en) | Cable ground connection remote monitoring method and remote monitoring system | |
| CN104158518A (en) | Self energy taking power supply device | |
| CN202547824U (en) | Online MOV (metal oxide varistor) fiber temperature measurement device for fault current limiter | |
| CN110034538B (en) | Dry-type reactor non-electric quantity protection system | |
| CN102620860A (en) | Metal oxide varistor (MOV) optical fiber online temperature measurement device applied to fault current limiter | |
| CN204028205U (en) | A kind of polarization-depolarization current pick-up unit for crosslinked polyethylene midium voltage cable | |
| CN101943724A (en) | Online detection device of surge protective device | |
| CN202648805U (en) | Fault current limiter and MOV wireless temperature measuring device applied to fault current limiter | |
| CN105954603A (en) | Residual life assessment method of transformer | |
| CN201637787U (en) | Online detection device for surge protector | |
| CN102735359A (en) | Fault current limiter and metal oxide varistor (MOV) wireless temperature measuring device applied to fault current limiter | |
| CN204190194U (en) | The temperature measuring equipment of contact in high-tension switch cabinet | |
| CN103308754A (en) | On-line overvoltage monitoring system based on lightning surge current of lightning arrester | |
| CN109375036A (en) | A kind of arrester ground fault monitoring device based on Internet of Things Network Communication | |
| CN215180525U (en) | High-precision safety electricity utilization online monitoring and early warning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20121106 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121106 Address after: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Applicant after: Shandong Research Inst. of Electric Power Applicant after: State Grid Corporation of China Address before: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Applicant before: Shandong Research Inst. of Electric Power |
|
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120801 |