CN201083800Y - Transformer substation insulated live-wire detector based on dummy instrument technology - Google Patents
Transformer substation insulated live-wire detector based on dummy instrument technology Download PDFInfo
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- CN201083800Y CN201083800Y CNU2007201027825U CN200720102782U CN201083800Y CN 201083800 Y CN201083800 Y CN 201083800Y CN U2007201027825 U CNU2007201027825 U CN U2007201027825U CN 200720102782 U CN200720102782 U CN 200720102782U CN 201083800 Y CN201083800 Y CN 201083800Y
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- 238000005516 engineering process Methods 0.000 title abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims description 15
- 229910044991 metal oxide Inorganic materials 0.000 claims description 9
- 150000004706 metal oxides Chemical class 0.000 claims description 9
- 238000009413 insulation Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000004458 analytical method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000013523 data management Methods 0.000 description 2
- 230000000069 prophylactic effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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- Testing Electric Properties And Detecting Electric Faults (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to an insulation on-line detector based on the virtual instrument technology, which comprises a sensor, a signal conditioner, an A/D converter and a compute, an output end of the sensor is connected with an input end of the signal conditioner, an output end of the signal conditioner is connected with an input end of the computer through the A/D converter; the sensor is a current transformer or/ and a voltage transformer. The utility model has the advantage that the of the virtual instrument structural form is adopted, thereby the intelligent degree and testing performance are improved, the dependence to the hardware system is decreased, a plurality of ways can be adopted to process the interference and harmonic effect, thereby having higher measuring accuracy and stability; and power cutting maintenance cost is saved so as to guarantee reliably operation of the power system.
Description
Technical field
The utility model relates to a kind of transformer station's para tape electro-detection instrument based on virtual instrument technique, is applicable to the medium consumption angle of capacitive apparatus and the charged detection of metal oxide arrester Leakage Current.Belong to the detecting instrument technical field.
Background technology
Domestic substation equipment para tape electro-detection system generally is discrete instrumentation at present, its working method is calculated with hand-manipulated, artificial reading and to its numerical value, angle from data management, can't handle lot of data, and have single fixing, the shortcomings such as graphical interfaces is little, poor expandability of systemic-function.And, adopt regular detection system usually, the prophylactic repair system, the prophylactic repair system has been inapplicable answers the requirement to power supply reliability of the needs of electric system reform and development and power consumer.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of transformer station's para tape electro-detection instrument based on virtual instrument technique.
The technical scheme that its technical matters that solves the utility model adopts:
The utility model includes sensor, signal conditioner, A/D converter, computing machine; The input end of the output termination signal conditioner of sensor, the output terminal of signal conditioner connects input end and computer through A/D converter; Described sensor is that current transformer is or/and voltage transformer (VT).
The utility model is built detection platform based on virtual instrument technique, the charged measuring ability of integrated plurality of devices insulation.Advantages such as this platform detects application software by the LabVIEW exploitation, makes up the virtual instrument storehouse, realizes the analyzing and processing to various signals, has the software and hardware favorable expandability, and antijamming capability is strong, data processing function is powerful.
The beneficial effects of the utility model are owing to adopt the Virtual Instrument Structure form, thereby the intelligent degree and the test performance of instrument have been improved, reduced dependence, can adopt several different methods to handle and disturb and influence of harmonic, had higher accuracy of measurement and stability hardware system; And cut and economized the power failure maintenance cost, guaranteed the reliability service of electric system.
Description of drawings
Fig. 1 is a principle calcspar of the present utility model.
Fig. 2 detects the wiring diagram of metal oxide arrester leakage current for the utility model.
Wiring diagram when Fig. 3 detects capacitive apparatus for the utility model.
In Fig. 2-3, PT is a voltage transformer (VT), and CT1-CT3 is a straight-through current transformer, and MOA is a metal oxide arrester, and Cn is the standard capacitive apparatus, and Cx is tested capacitive apparatus, and DET is the main part (part except that sensor) of this charged detector.
Embodiment
By the embodiment shown in Fig. 1-3 as can be known, it includes sensor, signal conditioner, A/D converter, computing machine; The input end of the output termination signal conditioner of sensor, the output terminal of signal conditioner connects input end and computer through A/D converter; Described sensor is that current transformer is or/and voltage transformer (VT).
In the present embodiment, also comprise printer, printer is connected with the printout mouth of computing machine; The model of described signal conditioner is SCXI-1142; Described A/D converter adopts PXI-6143 digital collection card; Described computing machine adopts portable computer.
In the present embodiment, when detecting the Leakage Current of metal oxide arrester MOA, described sensor is a voltage transformer pt and a straight-through current transformer CT1; The elementary of voltage transformer pt is connected between bus Bus and the ground, and straight-through current transformer CT1 is contained in (see figure 2) on the ground wire of metal oxide arrester MOA.
When detecting capacitive apparatus, described sensor adopts two straight-through current transformer CT2, CT3, and straight-through current transformer CT2, CT3 are contained in (see figure 3) on the ground wire of standard capacitive apparatus Cn and tested capacitive apparatus Cx respectively.
The course of work of this example is as follows:
One, voltage, the current signal that at first obtains by sensor:
When (1) detecting leakage current of an arrester, Fig. 2 has provided wiring diagram, and voltage signal is obtained through bus Bus by voltage transformer pt, and current signal is obtained by the straight-through current transformer CT1 that is contained on the metal oxide arrester MOA ground wire.
When (2) detecting capacitive equipment dielectric loss, Fig. 3 has provided wiring diagram, and present embodiment is taked the homophase relative method, need not gather voltage signal, with the screen loop, end that two straight-through current transformer CT2, CT3 are contained in two capacitive apparatus Cn, Cx respectively, obtains current signal.
Two, the voltage signal and the current signal of above-mentioned acquisition are nursed one's health in signal conditioner: the model of signal conditioner is SCXI-1142, it is produced by America NI company, because when capacitive apparatus and lightning arrester detection, obtained current signal is all very little, must amplify it; The interference of the various signals that bring for opposing external complex electromagnetic environment, this signal conditioner carries out filtering with low-pass filter to it, and isolated location is set to defend the injury of possible superpotential to acquisition system.
Three, then the signal after the above-mentioned conditioning is carried out the A/D conversion:
The PXI-6143 data collecting card that A/D converter adopts America NI company to give birth to, this capture card can guarantee synchronized sampling.When detecting capacitive apparatus, the two-way current signal of Cn, the Cx of two capacitive apparatus is carried out synchronous acquisition: when detecting metal oxide arrester MOA, a kind of collection voltage signal, a kind of collection current signal, synchronous acquisition.The data that collect are delivered to computing machine by optical cable and are handled.
Four, Data Management Analysis: in portable computer, carry out data processing and analysis with LabVIEW software programming program.Detect when capacitive apparatus insulated, adopt harmonic analysis method that the two-way current signal is carried out frequency-domain analysis, calculate dielectric loss angle poor of two capacitive apparatus, and employing homophase comparative analysis, if the less then equipment of equipment room first-harmonic angular difference is normal, if the excessive then explanation of first-harmonic angular difference wherein has one or two to have fault; When detecting lightning arrester, adopt harmonic analysis method to calculate the total current and the current in resistance property of this equipment,, represent that this lightning arrester is normal as its regulation that meets the product technology condition, otherwise, represent that it has problem.
Five, last, realize data storage and printing.
Claims (7)
1. based on transformer station's para tape electro-detection instrument of virtual instrument technique, it is characterized in that it includes sensor, signal conditioner, A/D converter, computing machine; The input end of the output termination signal conditioner of sensor, the output terminal of signal conditioner connects input end and computer through A/D converter; Described sensor is that current transformer is or/and voltage transformer (VT).
2. the transformer station's para tape electro-detection instrument based on virtual instrument technique according to claim 1 is characterized in that it also comprises printer, and printer is connected with the printout mouth of computing machine.
3. the transformer station's para tape electro-detection instrument based on virtual instrument technique according to claim 2, the model that it is characterized in that described signal conditioner is SCXI-1142.
4. the transformer station's para tape electro-detection instrument based on virtual instrument technique according to claim 3 is characterized in that described A/D converter adopts PXI-6143 digital collection card.
5. the transformer station's para tape electro-detection instrument based on virtual instrument technique according to claim 4, described computing machine adopts portable computer.
6. the transformer station's para tape electro-detection instrument based on virtual instrument technique according to claim 5, it is characterized in that described sensor is a voltage transformer pt and a straight-through current transformer CT1 when detecting the Leakage Current of metal oxide arrester MOA; The elementary of voltage transformer pt is connected between bus Bus and the ground, and straight-through current transformer CT1 is contained on the ground wire of metal oxide arrester MOA.
7. the transformer station's para tape electro-detection instrument based on virtual instrument technique according to claim 5, it is characterized in that when detecting capacitive apparatus, described sensor adopts two straight-through current transformer CT2, CT3, and straight-through current transformer CT2, CT3 are contained in respectively on the ground wire of standard capacitive apparatus Cn and tested capacitive apparatus Cx.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201027825U CN201083800Y (en) | 2007-10-15 | 2007-10-15 | Transformer substation insulated live-wire detector based on dummy instrument technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201027825U CN201083800Y (en) | 2007-10-15 | 2007-10-15 | Transformer substation insulated live-wire detector based on dummy instrument technology |
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| CN201083800Y true CN201083800Y (en) | 2008-07-09 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121953A (en) * | 2010-11-26 | 2011-07-13 | 河南省电力公司平顶山供电公司 | Method for measuring power system harmonic wave based on virtual instrument |
| CN102608409A (en) * | 2012-04-01 | 2012-07-25 | 江西省电力科学研究院 | Digital compensation method for measuring resistive current of MOA (metal oxide arrester) |
| CN103576032A (en) * | 2013-11-14 | 2014-02-12 | 国家电网公司 | On-line detection device and method of power device |
| CN106501689A (en) * | 2016-11-03 | 2017-03-15 | 国网重庆市电力公司北碚供电分公司 | A kind of distributed capacitive apparatus insulated electrification detection system |
| CN112305348A (en) * | 2020-10-20 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | Method for quickly testing resistive current of reconstructed MOA (metal oxide arrester) by considering in-phase capacitive equipment |
| CN112305351A (en) * | 2020-10-20 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | MOA resistive current measuring method for leakage current reconstruction voltage |
| CN112305352A (en) * | 2020-10-20 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | Voltage reconstruction MOA resistive current testing method based on in-phase capacitive equipment |
| CN112305349A (en) * | 2020-10-20 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | MOA resistive current rapid measurement method |
-
2007
- 2007-10-15 CN CNU2007201027825U patent/CN201083800Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121953A (en) * | 2010-11-26 | 2011-07-13 | 河南省电力公司平顶山供电公司 | Method for measuring power system harmonic wave based on virtual instrument |
| CN102608409A (en) * | 2012-04-01 | 2012-07-25 | 江西省电力科学研究院 | Digital compensation method for measuring resistive current of MOA (metal oxide arrester) |
| CN103576032A (en) * | 2013-11-14 | 2014-02-12 | 国家电网公司 | On-line detection device and method of power device |
| CN106501689A (en) * | 2016-11-03 | 2017-03-15 | 国网重庆市电力公司北碚供电分公司 | A kind of distributed capacitive apparatus insulated electrification detection system |
| CN112305348A (en) * | 2020-10-20 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | Method for quickly testing resistive current of reconstructed MOA (metal oxide arrester) by considering in-phase capacitive equipment |
| CN112305351A (en) * | 2020-10-20 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | MOA resistive current measuring method for leakage current reconstruction voltage |
| CN112305352A (en) * | 2020-10-20 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | Voltage reconstruction MOA resistive current testing method based on in-phase capacitive equipment |
| CN112305349A (en) * | 2020-10-20 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | MOA resistive current rapid measurement method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hebei Electric Power Construction & Adjustment Research Institute Assignor: Hebei Electric Power Research Institute Contract fulfillment period: 2008.9.22 to 2017.10.15 Contract record no.: 2008130000013 Denomination of utility model: Transformer substation insulated live-wire detector based on dummy instrument technology Granted publication date: 20080709 License type: Exclusive license Record date: 20081021 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hebei Electric Power Construction & Adjustment Research Institute Assignor: Hebei Electric Power Research Institute Contract fulfillment period: 2008.9.22 to 2017.10.15 Contract record no.: 2008130000013 Denomination of utility model: Transformer substation insulated live-wire detector based on dummy instrument technology Granted publication date: 20080709 License type: Exclusive license Record date: 20081021 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.9.22 TO 2017.10.15; CHANGE OF CONTRACT Name of requester: HEBEI PROVINCE ELECTRICITY CONSTRUCTION ADJUSTMENT Effective date: 20081021 |
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| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. HEBEI ELECTRIC POWER CONS Effective date: 20130320 Owner name: HEBEI ELECTRIC POWER CORPORATION ELECTRIC POWER RE Free format text: FORMER OWNER: HEBEI ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20130320 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130320 Address after: 050021 Shijiazhuang Province, Yuhua Province Sports street, South Street, No. 238, No. Patentee after: Electric Power Research Institute of Hebei Electric Power Corporation Patentee after: State Grid Corporation of China Patentee after: Hebei Electric Power Construction & Adjustment Research Institute Address before: 050021 Hebei city of Shijiazhuang Province Sports South Street No. 238 Hebei Electric Power Research Institute Patentee before: Hebei Electric Power Research Institute |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 Termination date: 20151015 |
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| EXPY | Termination of patent right or utility model |