CN202547824U - Online MOV (metal oxide varistor) fiber temperature measurement device for fault current limiter - Google Patents
Online MOV (metal oxide varistor) fiber temperature measurement device for fault current limiter Download PDFInfo
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- CN202547824U CN202547824U CN2012201537443U CN201220153744U CN202547824U CN 202547824 U CN202547824 U CN 202547824U CN 2012201537443 U CN2012201537443 U CN 2012201537443U CN 201220153744 U CN201220153744 U CN 201220153744U CN 202547824 U CN202547824 U CN 202547824U
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- Prior art keywords
- mov
- optical fiber
- temperature
- fault current
- current limiter
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- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 29
- 239000000835 fiber Substances 0.000 title claims abstract description 24
- 229910044991 metal oxide Inorganic materials 0.000 title abstract description 3
- 150000004706 metal oxides Chemical class 0.000 title abstract description 3
- 239000013307 optical fiber Substances 0.000 claims abstract description 56
- 238000004891 communication Methods 0.000 claims abstract description 17
- 239000000523 sample Substances 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 230000005684 electric field Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- 230000036760 body temperature Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses an online MOV (metal oxide varistor) fiber temperature measurement device for a fault current limiter, which aims at realizing power supply and energy acquisition of a monitor device in a high electric field application situation and interference resistance of a device in a strong electromagnetic environment, accurately monitoring the temperature of an MOV body in real time in the fault current limiter, and improving the operation reliability of the fault current limiter. The online MOV fiber temperature measurement device comprises a plurality of fluorescent fiber temperature measurement probes, a multi-channel fluorescent fiber signal demodulator, a fiber converter, a demodulator power supply energy acquisition CT (current transformer), an online MOV temperature monitoring workstation and a fiber communication bus, wherein the fluorescent fiber temperature measurement probes are arranged on the MOV body and connected with the multi-channel fluorescent fiber signal demodulator through optical fibers; the multi-channel fluorescent fiber signal demodulator acquires electricity from a high-potential high-voltage circuit through the demodulator power supply energy acquisition CT; the multi-channel fluorescent fiber signal demodulator is connected with the fiber converter through the communication bus; and the fiber converter is communicated with the online MOV temperature monitoring workstation through the fiber communication bus.
Description
Technical field
The utility model relates to a kind of optical fiber temperature measurement on-line device, relates 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.
The utility model content
The purpose of the utility model 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 utility model 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 utility model 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 beneficial effect of the utility model is: 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 the MOV optical fiber temperature measurement on-line device architecture synoptic diagram of the utility model.
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 utility model is done further to detail.
As shown in Figure 1, the MOV optical fiber temperature measurement on-line device of the utility model 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 utility model is realized, 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 utility model, is intended to further specify the utility model, 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 |
|---|---|---|---|
| CN2012201537443U CN202547824U (en) | 2012-04-12 | 2012-04-12 | Online MOV (metal oxide varistor) fiber temperature measurement device for fault current limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201537443U CN202547824U (en) | 2012-04-12 | 2012-04-12 | Online MOV (metal oxide varistor) fiber temperature measurement device for fault current limiter |
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| Publication Number | Publication Date |
|---|---|
| CN202547824U true CN202547824U (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201537443U Expired - Lifetime CN202547824U (en) | 2012-04-12 | 2012-04-12 | Online MOV (metal oxide varistor) fiber temperature measurement device for fault current limiter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620860A (en) * | 2012-04-12 | 2012-08-01 | 山东电力研究院 | Metal oxide varistor (MOV) optical fiber online temperature measurement device applied to fault current limiter |
-
2012
- 2012-04-12 CN CN2012201537443U patent/CN202547824U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620860A (en) * | 2012-04-12 | 2012-08-01 | 山东电力研究院 | Metal oxide varistor (MOV) optical fiber online temperature measurement device applied to fault current limiter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121108 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121108 Address after: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Patentee after: Shandong Research Inst. of Electric Power Patentee after: State Grid Corporation of China Address before: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Patentee before: Shandong Research Inst. of Electric Power |
|
| CP02 | Change in the address of a patent holder |
Address after: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee after: Shandong Electric Power Research Institute Patentee after: State Grid Corporation of China Address before: 250002, No. 500, South Second Ring Road, Shizhong District, Shandong, Ji'nan Patentee before: Shandong Electric Power Research Institute Patentee before: State Grid Corporation of China |
|
| CP02 | Change in the address of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |
|
| CX01 | Expiry of patent term |