CN202854233U - Phase angle indicating device used in calibration of 500 kV voltage transformer - Google Patents
Phase angle indicating device used in calibration of 500 kV voltage transformer Download PDFInfo
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- CN202854233U CN202854233U CN 201220579620 CN201220579620U CN202854233U CN 202854233 U CN202854233 U CN 202854233U CN 201220579620 CN201220579620 CN 201220579620 CN 201220579620 U CN201220579620 U CN 201220579620U CN 202854233 U CN202854233 U CN 202854233U
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- phase angle
- voltage
- voltage transformer
- angle indicating
- sensor
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- 238000012360 testing method Methods 0.000 claims abstract description 13
- 238000012795 verification Methods 0.000 claims description 12
- 238000002474 experimental method Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a phase angle indicating device used in the calibration of a 500 kV voltage transformer. The phase angle indicating device comprises a current sensor, a voltage sensor, a phase angle detection device, and an operation control device. The current sensor and the voltage sensor are arranged on the test low voltage side, signals sent by the current sensor and the voltage sensor are transmitted to the phase angle detection device, and the phase angle detection device is connected with the operation control device. The phase angle indicating device used in the calibration of a 500 kV voltage transformer of the utility model has advantages of simple structure and easy operation, and can be used to solve the problem that the high-voltage current sensor and the voltage sensor have disadvantages of big size and heave weight, the problem of inconvenient wire connection operation, the problem that the field test operation is inconvenient, etc.
Description
Technical field
The utility model relate to a kind of special-purpose assorted be the phasing degree indicating device of 500 kV voltage transformer (VT) verification test loops in electric pressure.
Background technology
The general industrial frequency inductance-regulation series resonance that adopts rose to rated voltage with tested voltage transformer (VT) power frequency when electric pressure was 500 kV voltage transformer (VT) verification, with the actual motion state of aanalogvoltage mutual inductor.The voltage transformer (VT) of 500 kV electric pressures mostly is capacitance type potential transformer, and can be with whole section bus or GIS pipeline together with boosting when error evaluation is carried out at the scene, introduce the additional electrical capacity, therefore needed the resonant condition of indicating device indication test loop, phasing degree.The phasing degree of directly measuring the test high tension loop needs that volume is large, high-voltage current sensor and the voltage sensor of heavy, and the wiring troublesome poeration is unsuitable for the site test operation.
The utility model content
The utility model purpose: the purpose of this utility model is for the deficiencies in the prior art, a kind of 500 kV voltage transformer (VT) verification phase angle indicating equipments are provided, have simple in structure, easy to operate characteristics, solved that high-voltage current sensor and voltage sensor volume are large, heavy, the wiring troublesome poeration is unsuitable for the problems such as site test operation.
Technical scheme: a kind of 500 kV voltage transformer (VT) verification phase angle indicating equipments described in the utility model comprise current sensor, voltage sensor, phase detectors, arithmetic and control unit; Described current sensor and voltage sensor are arranged on the test low-pressure side, and its signal that sends is transferred to phase detectors, and described phase detectors are connected with arithmetic and control unit.
Further improve technique scheme, said apparatus also comprises logic controller, and the one end is connected with arithmetic and control unit, and the other end is connected with the REgulatable reactor of power frequency series resonance or parallel resonance.
Further, described experiment low-pressure side is pressure regulator or the sinusoidal wave power supply place that occurs.
The embodiment of said apparatus is as follows: 500 kV voltage transformer (VT) verifications are general to be adopted by pressure regulator or the sinusoidal wave power supply that occurs and boosts as the power frequency controllable impedance series resonant equipment in pressure regulation source.The utility model is by adding current sensor and voltage sensor in low-pressure side (pressure regulator or the sinusoidal wave power supply place that occurs), and uses phase detectors to detect electric current, voltage and the phasing degree difference of test low tension loop.Carry out boost operational with the increasing apparatus High voltage output terminal shortcircuit of power frequency controllable impedance series resonance or power frequency parallel resonance and by arithmetic and control unit, thereby calculate the short circuit phase difference value.The phasing degree value that calculates exports logic controller to the pattern of digital signal, thereby the REgulatable reactor of the assembling of boosting is controlled, and realizes that 500 kV transducer checks boost with the robotization detection phase angle indication of power frequency series resonance test.
The utility model compared with prior art, its beneficial effect is: 500 kV voltage transformer (VT) verification phase angle indicating equipments described in the utility model, simple in structure, easy to operate, solved that high-voltage current sensor and voltage sensor volume are large, heavy, the wiring troublesome poeration is unsuitable for the problems such as site test operation.
Description of drawings
Fig. 1 is schematic block diagram of the present utility model.
Embodiment
The below is elaborated to technical solutions of the utility model, but protection domain of the present utility model is not limited to described embodiment.
As shown in Figure 1, a kind of 500 kV voltage transformer (VT) verification phase angle indicating equipments comprise current sensor, voltage sensor, phase detectors, arithmetic and control unit and logic controller; Described current sensor and voltage sensor are arranged on the test low-pressure side, and its signal that sends is transferred to phase detectors, and described phase detectors are connected with arithmetic and control unit.Described arithmetic and control unit andlogic control device connects, and described logic controller is connected with the REgulatable reactor of power frequency series resonance or parallel resonance.
Thereby current sensor and the low-pressure side phasing degree of voltage sensor indirect measuring circuit of said apparatus by low-voltage uses arithmetic and control unit to calculate and derive the phasing degree of 500 kV voltage transformer (VT) verification high pressure primary circuits, and the REgulatable reactor of power frequency series resonance or parallel resonance sent with the phasing degree that it is calculated that by logic controller and to adjust signal.
As mentioned above, although represented and explained the utility model with reference to specific preferred embodiment, it shall not be construed as the restriction to the utility model self.Under the spirit and scope prerequisite of the present utility model that does not break away from the claims definition, can make in the form and details various variations to it.
Claims (3)
1. kV voltage transformer (VT) verification phase angle indicating equipment is characterized in that, comprises current sensor, voltage sensor, phase detectors, arithmetic and control unit; Described current sensor and voltage sensor are arranged on the test low-pressure side, and its signal that sends is transferred to phase detectors, and described phase detectors are connected with arithmetic and control unit.
2. 500 kV voltage transformer (VT) verification phase angle indicating equipments according to claim 1 is characterized in that, also comprise logic controller, the one end is connected with arithmetic and control unit, and the other end is connected with the REgulatable reactor of power frequency series resonance or parallel resonance.
3. 500 kV voltage transformer (VT) verification phase angle indicating equipments according to claim 1 is characterized in that, described experiment low-pressure side is pressure regulator or the sinusoidal wave power supply place that occurs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220579620 CN202854233U (en) | 2012-11-06 | 2012-11-06 | Phase angle indicating device used in calibration of 500 kV voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220579620 CN202854233U (en) | 2012-11-06 | 2012-11-06 | Phase angle indicating device used in calibration of 500 kV voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202854233U true CN202854233U (en) | 2013-04-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220579620 Expired - Fee Related CN202854233U (en) | 2012-11-06 | 2012-11-06 | Phase angle indicating device used in calibration of 500 kV voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202854233U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090162A (en) * | 2014-06-17 | 2014-10-08 | 国家电网公司 | Method for measuring system voltage and current angles without voltage transformer |
| CN110333399A (en) * | 2019-08-21 | 2019-10-15 | 广东电网有限责任公司 | A kind of distribution low-voltage customer load looks into phase method |
-
2012
- 2012-11-06 CN CN 201220579620 patent/CN202854233U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090162A (en) * | 2014-06-17 | 2014-10-08 | 国家电网公司 | Method for measuring system voltage and current angles without voltage transformer |
| CN110333399A (en) * | 2019-08-21 | 2019-10-15 | 广东电网有限责任公司 | A kind of distribution low-voltage customer load looks into phase method |
| CN110333399B (en) * | 2019-08-21 | 2021-05-11 | 广东电网有限责任公司 | Distribution network low-voltage user load phase checking method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20191106 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |