CN111929526A - Electronic voltage transformer checking system and method - Google Patents
Electronic voltage transformer checking system and method Download PDFInfo
- Publication number
- CN111929526A CN111929526A CN202010743931.6A CN202010743931A CN111929526A CN 111929526 A CN111929526 A CN 111929526A CN 202010743931 A CN202010743931 A CN 202010743931A CN 111929526 A CN111929526 A CN 111929526A
- Authority
- CN
- China
- Prior art keywords
- voltage
- electronic
- parallel
- tested
- transformers
- 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
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000012795 verification Methods 0.000 claims description 37
- 238000012360 testing method Methods 0.000 claims description 26
- 238000000605 extraction Methods 0.000 claims description 13
- 238000007781 pre-processing Methods 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 12
- 239000013307 optical fiber Substances 0.000 description 6
- 238000004891 communication Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/01—Subjecting similar articles in turn to test, e.g. "go/no-go" tests in mass production; Testing objects at points as they pass through a testing station
- G01R31/013—Testing passive components
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
Abstract
The invention discloses a system and a method for checking an electronic voltage transformer, wherein the method comprises the following steps: connecting the low-voltage side terminals of the electronic voltage transformers to be tested in parallel to ground, and connecting the high-voltage side terminals of the electronic voltage transformers to be tested in parallel to a booster; the booster applies preset voltage to the standard voltage transformer and the electronic voltage transformers to be tested which are connected in parallel; the calibration device calibrates the electronic voltage transformers to be tested after being connected in parallel according to the standard voltage output by the standard voltage transformer and the voltages to be tested output by the electronic voltage transformers to be tested after being connected in parallel.
Description
Technical Field
The invention relates to the technical field of equipment calibration, in particular to a system and a method for calibrating an electronic voltage transformer.
Background
This section is intended to provide a background or context to the embodiments of the invention that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
With the continuous development of key technologies of intelligent power grids and intelligent substations, the intelligent substations of China are increasing explosively, and the number of intelligent devices in the intelligent substations is increasing. For a voltage transformer in a transformer substation, on-site verification is required before operation, and for on-site verification of an electronic voltage transformer of an intelligent transformer substation, the on-site verification is more complicated and requires more time than the on-site verification of an electromagnetic voltage transformer of a traditional transformer substation. The field calibration of the electronic voltage transformer needs to be carried out in a power failure mode, and cross operation cannot be carried out in the power failure mode. Therefore, the improvement of the field calibration work efficiency of the electronic voltage transformer of the intelligent substation has important significance on construction, operation and maintenance of the intelligent substation.
As shown in fig. 6(a) and 6(b), the prior art can perform field calibration on only one electronic voltage transformer at a time, when one electronic voltage transformer is calibrated, the test wire of primary equipment and the test wire of secondary equipment need to be disconnected, the test equipment and the auxiliary equipment need to be moved according to the position of a tested object, when a plurality of electronic voltage transformers are calibrated, the test equipment and the auxiliary equipment need to be disconnected and boosted for a plurality of times, and the calibration process is complicated and low in efficiency due to the fact that the test equipment and the auxiliary equipment are moved for a plurality of times.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides an electronic voltage transformer checking system, which is used for improving the checking efficiency of an electronic voltage transformer and comprises the following components:
the system comprises a standard voltage transformer, a booster, a calibration device and a connecting wire; wherein the content of the first and second substances,
the connecting wire is used for, and a plurality of electronic voltage transformer that awaits measuring connect in parallel, include: connecting the low-voltage side terminals of the electronic voltage transformers to be tested in parallel to ground, and connecting the high-voltage side terminals of the electronic voltage transformers to be tested in parallel to a booster;
the booster is used for applying preset voltage to the standard voltage transformer and the electronic voltage transformers to be tested after being connected in parallel;
the checking device is used for checking the electronic voltage transformers to be detected after being connected in parallel according to the standard voltage value output by the standard voltage transformer and the voltage values to be detected output by the electronic voltage transformers to be detected after being connected in parallel.
The embodiment of the invention provides an electronic voltage transformer checking method, which is applied to the electronic voltage transformer checking system and is used for improving the checking efficiency of an electronic voltage transformer, and the method comprises the following steps:
the connecting wire is parallelly connected with a plurality of electronic voltage transformer that await measuring, includes: connecting the low-voltage side terminals of the electronic voltage transformers to be tested in parallel to ground, and connecting the high-voltage side terminals of the electronic voltage transformers to be tested in parallel to a booster;
the booster applies preset voltage to the standard voltage transformer and the electronic voltage testing transformers to be tested after being connected in parallel;
the calibration device calibrates the electronic voltage transformers to be tested after being connected in parallel according to the standard voltage output by the standard voltage transformer and the voltages to be tested output by the electronic voltage transformers to be tested after being connected in parallel.
The embodiment of the invention comprises the following steps: the connecting wire is parallelly connected with a plurality of electronic voltage transformer that await measuring, includes: connecting the low-voltage side terminals of the electronic voltage transformers to be tested in parallel to ground, and connecting the high-voltage side terminals of the electronic voltage transformers to be tested in parallel to a booster; the booster applies preset voltage to the standard voltage transformer and the electronic voltage transformers to be tested which are connected in parallel; the calibration device calibrates the electronic voltage transformers to be tested after being connected in parallel according to the standard voltage output by the standard voltage transformer and the voltages to be tested output by the electronic voltage transformers to be tested after being connected in parallel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
FIG. 1 is a schematic diagram of a structure of an electronic voltage transformer verification system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a structure of an electronic voltage transformer calibration system in a direct boosting mode according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a system for calibrating an electronic voltage transformer according to an embodiment of the present invention, in which the system is implemented in a series resonant boosting mode;
FIG. 4 is a schematic diagram of a system for verifying an electronic voltage transformer with a voltage extraction phase according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a flow of a method for verifying an electronic voltage transformer according to an embodiment of the present invention;
FIG. 6(a) is a wiring diagram for checking an electronic voltage transformer in a direct boosting manner according to the prior art;
fig. 6(b) is a wiring diagram for checking the electronic voltage transformer in the series resonance boosting mode according to the prior art.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As will be appreciated by one skilled in the art, embodiments of the present invention may be embodied as a system, apparatus, method or computer program product. Accordingly, the present disclosure may be embodied in the form of: entirely hardware, entirely software (including firmware, resident software, micro-code, etc.), or a combination of hardware and software.
In order to solve the technical problems of complex verification process and low efficiency caused by the fact that multiple times of disconnecting wires, multiple times of boosting and multiple times of moving test equipment and auxiliary equipment are needed when a plurality of electronic voltage transformers are verified in the prior art, an embodiment of the invention provides an electronic voltage transformer verification system for improving the verification efficiency of the electronic voltage transformers, and fig. 1 is a schematic diagram of the structure of the electronic voltage transformer verification system in the embodiment of the invention, and as shown in fig. 1, the system comprises:
the device comprises a standard voltage transformer 01, a booster 02, a verifying device 03 and a connecting wire 04; wherein the content of the first and second substances,
connecting wire 04 is used for, and a plurality of electronic type voltage transformer that awaits measuring connect in parallel, include: low-voltage side terminals of the electronic voltage transformers to be tested are grounded in parallel, and high-voltage side terminals of the electronic voltage transformers to be tested are connected in parallel and then connected to the booster 02;
the booster 02 is used for applying preset voltage to the standard voltage transformer 01 and the electronic voltage transformers to be tested which are connected in parallel;
the calibration device 03 is used for calibrating the electronic voltage transformers to be tested after being connected in parallel according to the standard voltage value output by the standard voltage transformer 01 and the voltage values to be tested output by the electronic voltage transformers to be tested after being connected in parallel.
As shown in fig. 1, an embodiment of the present invention is implemented by: the connecting wire is parallelly connected with a plurality of electronic voltage transformer that await measuring, includes: connecting the low-voltage side terminals of the electronic voltage transformers to be tested in parallel to ground, and connecting the high-voltage side terminals of the electronic voltage transformers to be tested in parallel to a booster; the booster applies preset voltage to the standard voltage transformer and the electronic voltage transformers to be tested which are connected in parallel; the calibration device calibrates the electronic voltage transformers to be tested after being connected in parallel according to the standard voltage output by the standard voltage transformer and the voltages to be tested output by the electronic voltage transformers to be tested after being connected in parallel.
Fig. 2 is a schematic diagram of a structure of an electronic voltage transformer verification system in a direct boosting mode according to an embodiment of the present invention, and as shown in fig. 2, the system further includes: the merging unit 05 is used for preprocessing a plurality of voltage values to be detected output by a plurality of electronic voltage transformers to be detected after parallel connection based on a preset format;
and sending the preprocessed multiple voltage values to be tested to the verifying device 03.
In one embodiment, the output fiber of the merging unit 05 is connected to the input of the verification device 03.
In one embodiment, the merging unit 05 and the verifying unit 03 are connected to the same external clock source;
the calibration device 03 synchronously collects the standard voltage output by the standard voltage transformer 01 and the voltages to be tested output by the electronic voltage transformers to be tested after being connected in parallel.
In one embodiment, the booster 02 includes: a step-up transformer.
In specific implementation, the field verification of the Electronic Voltage Transformer (EVT) includes the conditions of pre-commissioning verification, post-commissioning first verification, periodic verification, temporary verification and the like, the EVT is usually arranged at intervals such as a bus, an outgoing line, a main transformer and the like, and the arrangement mode of the EVT is basically independent of the main connection mode, so that 3 EVTs at the same interval can be connected in parallel through the connecting line 04, and the method comprises the following steps: the low-voltage side terminal of the 3 EVTs is grounded in parallel, the high-voltage side terminal of the 3 EVTs is connected in parallel and then connected to the step-up transformer, the standard voltage transformer 01 is connected to the step-up transformer, the standard voltage transformers 01 and the 3 EVTs can be directly boosted to preset voltage through the step-up transformer, the 3 EVTs at intervals can be connected to the same merging unit 05 together, the merging unit 05 can preprocess a plurality of voltage values to be tested output by the 3 EVTs after being connected in parallel based on a preset format or a preset communication protocol, the output end optical fiber of the merging unit 05 is connected to the input end of the checking device 03, the preprocessed plurality of voltage values to be tested can be sent to the checking device 03, the checking device 03 can compare the standard voltage value output by the standard voltage transformer 01 with the plurality of voltage values to be tested respectively to determine error data of the plurality of voltage, thereby enabling simultaneous verification of 3 EVTs. In addition, the merging unit 05 and the verifying device 03 are connected to the same external clock source, so that the verifying device 03 can synchronously acquire the standard voltage output by the standard voltage transformer 01 and the voltages to be tested output by the electronic voltage transformers to be tested after being connected in parallel.
Fig. 3 is a schematic diagram of a structure of an electronic voltage transformer verification system of a series resonance boosting mode according to an embodiment of the present invention, and as shown in fig. 3, in an embodiment, the booster 02 may further include a series resonance boosting device.
In the field verification of the traditional Capacitance Voltage Transformer (CVT), because the test must be carried out under the condition of 50Hz, and the geographical condition of the field is complex, the traditional large-capacity test device has difficulty meeting the requirement of field transportation. Therefore, the serial resonance boosting device is widely adopted to carry out field verification on the CVT.
For the EVT adopting the capacitance voltage division principle, a series resonance voltage boosting mode can still be adopted for boosting, but different from the CVT, the equivalent capacitance of the capacitance voltage division type EVT does not have a fixed value along with the voltage level, and different external capacitances can be designed by different manufacturers due to different considerations, so that a series voltage boosting device designed for CVT field verification, particularly a device with an adjustable inductance, has a certain problem in matching resonance parameters, and the CVT test device is not suitable for the capacitance voltage division type EVT.
According to the discovery of the capacitive division type EVT in a plurality of intelligent substations, the capacitance of the capacitive division type EVT is much smaller than that of a CVT with the same voltage class, usually only about 1/3 capacitance is obtained, and products of different manufacturers are different. Therefore, if the single EVT is boosted by the CVT test apparatus and cannot be boosted to the vicinity of the rated voltage under the condition that the series inductance or the reasonable compensation capacitance cannot be continuously adjusted, as shown in fig. 3, the electronic voltage transformer verification system of the series resonance boosting mode proposed in the embodiment of the present invention connects the 3 capacitive division type EVTs in parallel through the connecting wire, which just increases the capacitance, and in the actual work, it is found that, in some cases, the capacitance after the parallel connection of the 3 capacitive division type EVTs is just about equal to the capacitance of the single CVT, so that the original series resonance boosting apparatus of the CVT test apparatus can be used to boost the capacitive division type EVTs after the parallel connection of the 3 EVTs to the preset voltage value, thereby performing the simultaneous verification of 6 sets of error data corresponding to the 3 capacitive division type EVTs, and the specific verification process is similar to that of the electronic voltage transformer verification system of the direct boosting mode, and will not be described in detail herein.
Fig. 4 is a schematic diagram of a structure of an electronic voltage transformer verification system with a voltage extraction phase according to an embodiment of the present invention, as shown in fig. 4, in an embodiment, when the electronic voltage transformer to be tested has the voltage extraction phase, the connection line 04 is further configured to: and connecting the voltage extraction phase and a plurality of electronic voltage transformers to be tested in parallel.
During specific implementation, when the electronic voltage transformer to be tested has a voltage extraction phase, as shown in fig. 4, the voltage extraction phase can be connected in parallel with a plurality of electronic voltage transformers to be tested through the connecting line 04, and then the voltage is boosted to a preset voltage value through the booster 02, so that checking of 8 groups of error data corresponding to the 3 EVTs and the voltage extraction is performed simultaneously, a specific checking process is similar to that of the electronic voltage transformer checking system in a direct boosting mode, and details are not repeated here.
Based on the same inventive concept, the embodiment of the invention also provides an electronic voltage transformer calibration method, which is applied to the electronic voltage transformer calibration system, such as the following embodiments. The principle of the electronic voltage transformer checking method for solving the problems is similar to that of an electronic voltage transformer checking system, so the implementation of the method can be referred to the implementation of the system, and repeated parts are not described again.
Fig. 5 is a schematic diagram of a flow of a method for verifying an electronic voltage transformer according to an embodiment of the present invention, and as shown in fig. 5, the method includes:
step 101: the connecting wire is parallelly connected with a plurality of electronic voltage transformer that await measuring, includes: connecting the low-voltage side terminals of the electronic voltage transformers to be tested in parallel to ground, and connecting the high-voltage side terminals of the electronic voltage transformers to be tested in parallel to a booster;
step 102: the booster applies preset voltage to the standard voltage transformer and the electronic voltage testing transformers to be tested after being connected in parallel;
step 103: the calibration device calibrates the electronic voltage transformers to be tested after being connected in parallel according to the standard voltage output by the standard voltage transformer and the voltages to be tested output by the electronic voltage transformers to be tested after being connected in parallel.
In one embodiment, further comprising: preprocessing a plurality of voltage values to be detected output by a plurality of electronic voltage transformers to be detected after parallel connection based on a preset format;
and sending the preprocessed voltages to be detected to a checking device.
In one embodiment, the method further comprises, when the electronic voltage transformer to be tested has a voltage extraction phase, connecting the voltage extraction phase and the electronic voltage transformers to be tested in parallel through the connecting line.
In one embodiment, the method further comprises: the merging unit preprocesses a plurality of voltage values to be tested output by a plurality of electronic voltage transformers to be tested after parallel connection based on a preset format;
and sending the preprocessed multiple voltage values to be detected to a checking device.
In one embodiment, the output fiber of the merging unit is connected to the input of the verification device.
In one embodiment, the merging unit and the verifying device are connected to the same external clock source;
the calibration device synchronously collects the standard voltage output by the standard voltage transformer and the voltages to be tested output by the electronic voltage transformers to be tested after being connected in parallel.
In one embodiment, the booster comprises: a step-up transformer.
In one embodiment, the booster comprises: a series resonance boosting device.
The following is a specific example to facilitate an understanding of how the invention may be practiced.
The field verification process of the electronic voltage transformer verification system in the embodiment of the invention is as follows:
1. connecting the low-voltage side terminals of the 3 EVTs in parallel to the ground through connecting wires, connecting the high-voltage side terminals of the 3 EVTs in parallel to a step-up transformer, connecting a standard voltage transformer to the step-up transformer, connecting the output ends of the 3 EVTs to a merging unit, and connecting the merging unit to a verification device through optical fibers;
2. the method comprises the steps of switching on test voltage, boosting a standard voltage transformer and 3 EVTs to preset voltage through a booster transformer, preprocessing a plurality of voltage values to be detected output by the 3 EVTs after parallel connection through a merging unit, sending the preprocessed voltage values to be detected to a checking device, comparing the standard voltage value output by the standard voltage transformer with the voltage values to be detected respectively by the checking device, determining error data of the voltage values to be detected, recording the error data, and switching off the power supply;
3. and (5) removing the primary wiring, the secondary wiring and the optical fiber wiring.
Since the merging unit includes sets a and B (one of which is spare), the merging unit 05 needs to preprocess 6 sets of voltage values to be measured for 3 EVTs. In the prior art verification scheme, for 3 EVTs only provided with a set of combination units A and a set of combination units B, 1 booster, 1 standard voltage transformer and 1 set of verification device are required for 6 sets of error data in terms of test equipment; in the aspect of the test wiring process, at least 3 times of primary wiring, 6 times of secondary wiring, 6 times of boosting and 6 times of optical fiber wiring are required, and the continuous movement of test equipment and auxiliary equipment is accompanied.
By adopting the electronic voltage transformer calibration system provided by the embodiment of the invention, if the calibration device can only be simultaneously connected with 1 registration merging unit and has a multi-path multi-channel analysis function, 3 groups of error data corresponding to the merging unit by A, B, C three-phase 3 EVTs at intervals can be simultaneously calibrated by one-time boosting, for the error data corresponding to the other registration merging unit, only the wiring of the merging unit needs to be changed, and the first test line and the standard voltage transformer secondary test line do not need to be changed, so that the test wiring process of 6 groups of error data corresponding to 3 EVTs in total is as follows: the method comprises the following steps of 1 time of primary wiring, 1 time of secondary wiring, 2 times of boosting and 2 times of optical fiber wiring, and test equipment is not required to move in the process. If the checking device can be simultaneously connected with 2 registration combination units and has a multi-path multi-channel analysis function, one boosting can simultaneously check all error data of A, B, C three-phase 3 EVT pairs of 2 registration combination units at the interval, so that the test wiring process of 6 groups of error data corresponding to 3 EVTs in total is as follows: the first wiring is performed for 1 time, the second wiring is performed for 1 time, the voltage is boosted for 1 time, and the optical fiber is connected for 1 time, namely, all the verification of 6 groups of error data corresponding to 3 EVTs can be realized under the condition of the first wiring and the first voltage boosting.
In summary, the embodiment of the present invention provides: the connecting wire is parallelly connected with a plurality of electronic voltage transformer that await measuring, includes: connecting the low-voltage side terminals of the electronic voltage transformers to be tested in parallel to ground, and connecting the high-voltage side terminals of the electronic voltage transformers to be tested in parallel to a booster; the booster applies preset voltage to the standard voltage transformer and the electronic voltage transformers to be tested which are connected in parallel; the calibration device calibrates the electronic voltage transformers to be tested after being connected in parallel according to the standard voltage output by the standard voltage transformer and the voltages to be tested output by the electronic voltage transformers to be tested after being connected in parallel.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. An electronic voltage transformer calibration system, comprising: the system comprises a standard voltage transformer, a booster, a calibration device and a connecting wire; wherein the content of the first and second substances,
the connecting wire is used for, with a plurality of electronic voltage transformer parallels that await measuring, includes: connecting the low-voltage side terminals of the electronic voltage transformers to be tested in parallel to ground, and connecting the high-voltage side terminals of the electronic voltage transformers to be tested in parallel to a booster;
the booster is used for applying preset voltage to the standard voltage transformer and the electronic voltage transformers to be tested after being connected in parallel;
the checking device is used for checking the electronic voltage transformers to be detected after being connected in parallel according to the standard voltage value output by the standard voltage transformer and the voltage values to be detected output by the electronic voltage transformers to be detected after being connected in parallel.
2. The system of claim 1, further comprising: the merging unit is used for preprocessing a plurality of voltage values to be detected output by a plurality of electronic voltage transformers to be detected after parallel connection based on a preset format;
and sending the preprocessed multiple voltage values to be detected to the checking device.
3. The system of claim 2, wherein an output fiber of the merging unit is connected to an input of the verification device.
4. The system of claim 2, wherein the merging unit and the verification device are connected to a same external clock source;
the calibration device synchronously collects the standard voltage output by the standard voltage transformer and the voltages to be tested output by the electronic voltage transformers to be tested after being connected in parallel.
5. The system of claim 1, wherein the connecting wires are further configured to, when the electronic voltage transformer under test has a voltage extraction phase: and connecting the voltage extraction phase and a plurality of electronic voltage transformers to be tested in parallel.
6. The system of claim 1, wherein the booster includes: a step-up transformer.
7. The system of claim 1, wherein the booster includes: a series resonance boosting device.
8. An electronic voltage transformer verification method, which is applied to the electronic voltage transformer verification system according to any one of claims 1 to 7, and includes:
through the connecting wire is parallelly connected with a plurality of electronic type voltage transformer that await measuring, include: connecting the low-voltage side terminals of the electronic voltage transformers to be tested in parallel to ground, and connecting the high-voltage side terminals of the electronic voltage transformers to be tested in parallel to a booster;
the booster applies preset voltage to the standard voltage transformer and the electronic voltage testing transformers to be tested which are connected in parallel;
and the checking device checks the electronic voltage transformers to be detected after being connected in parallel according to the standard voltage output by the standard voltage transformer and the voltages to be detected output by the electronic voltage transformers to be detected after being connected in parallel.
9. The method of claim 8, further comprising: preprocessing a plurality of voltage values to be detected output by a plurality of electronic voltage transformers to be detected after parallel connection based on a preset format;
and sending the preprocessed multiple voltages to be detected to the checking device.
10. The method of claim 8, wherein when the electronic voltage transformer under test has a voltage extraction phase, the voltage extraction phase is connected in parallel with the plurality of electronic voltage transformers under test via the connection line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010743931.6A CN111929526A (en) | 2020-07-29 | 2020-07-29 | Electronic voltage transformer checking system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010743931.6A CN111929526A (en) | 2020-07-29 | 2020-07-29 | Electronic voltage transformer checking system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111929526A true CN111929526A (en) | 2020-11-13 |
Family
ID=73314826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010743931.6A Pending CN111929526A (en) | 2020-07-29 | 2020-07-29 | Electronic voltage transformer checking system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111929526A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101872006A (en) * | 2010-06-04 | 2010-10-27 | 中国计量学院 | Periodic non-sinusoidal wave reference of electronic voltage transformer with voltage booster |
| CN102305893A (en) * | 2011-05-25 | 2012-01-04 | 湖南省电力公司科学研究院 | Method and device for checking power-factor angle of high voltage line of intelligent substation on site |
| CN203909262U (en) * | 2014-01-15 | 2014-10-29 | 云南电力试验研究院（集团）有限公司电力研究院 | Device for verifying intelligent electronic mutual inductor based on IEC61850 |
| CN204009036U (en) * | 2014-06-16 | 2014-12-10 | 国家电网公司 | Electronic type voltage transformer calibration equipment |
| CN204142777U (en) * | 2014-11-06 | 2015-02-04 | 国家电网公司 | Voltage transformer (VT) calibrating termination |
| CN105093151A (en) * | 2015-08-03 | 2015-11-25 | 国家电网公司 | 750kV level capacitive voltage transformer onsite calibration system and calibration method |
| CN105353332A (en) * | 2015-10-29 | 2016-02-24 | 中国电力科学研究院 | Electronic transformer long-term charged performance test method and system |
| CN205049726U (en) * | 2015-09-16 | 2016-02-24 | 国家电网公司 | Take voltage transformer check gauge of temperature measurement function |
| CN107064849A (en) * | 2017-03-15 | 2017-08-18 | 平高集团有限公司 | Electronic current mutual inductor check system and calibration equipment |
| CN107132501A (en) * | 2017-06-25 | 2017-09-05 | 山西省机电设计研究院 | Electronic mutual inductor verification system and calibration method |
| CN108152779A (en) * | 2018-02-07 | 2018-06-12 | 华北电力科学研究院有限责任公司 | Electronic current mutual inductor check system and method |
-
2020
- 2020-07-29 CN CN202010743931.6A patent/CN111929526A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101872006A (en) * | 2010-06-04 | 2010-10-27 | 中国计量学院 | Periodic non-sinusoidal wave reference of electronic voltage transformer with voltage booster |
| CN102305893A (en) * | 2011-05-25 | 2012-01-04 | 湖南省电力公司科学研究院 | Method and device for checking power-factor angle of high voltage line of intelligent substation on site |
| CN203909262U (en) * | 2014-01-15 | 2014-10-29 | 云南电力试验研究院（集团）有限公司电力研究院 | Device for verifying intelligent electronic mutual inductor based on IEC61850 |
| CN204009036U (en) * | 2014-06-16 | 2014-12-10 | 国家电网公司 | Electronic type voltage transformer calibration equipment |
| CN204142777U (en) * | 2014-11-06 | 2015-02-04 | 国家电网公司 | Voltage transformer (VT) calibrating termination |
| CN105093151A (en) * | 2015-08-03 | 2015-11-25 | 国家电网公司 | 750kV level capacitive voltage transformer onsite calibration system and calibration method |
| CN205049726U (en) * | 2015-09-16 | 2016-02-24 | 国家电网公司 | Take voltage transformer check gauge of temperature measurement function |
| CN105353332A (en) * | 2015-10-29 | 2016-02-24 | 中国电力科学研究院 | Electronic transformer long-term charged performance test method and system |
| CN107064849A (en) * | 2017-03-15 | 2017-08-18 | 平高集团有限公司 | Electronic current mutual inductor check system and calibration equipment |
| CN107132501A (en) * | 2017-06-25 | 2017-09-05 | 山西省机电设计研究院 | Electronic mutual inductor verification system and calibration method |
| CN108152779A (en) * | 2018-02-07 | 2018-06-12 | 华北电力科学研究院有限责任公司 | Electronic current mutual inductor check system and method |
Non-Patent Citations (4)
| Title |
|---|
| 徐先勇 等: "110kV智能变电站复杂环境下电子式互感器校验方法", 《湖南大学学报（自然科学版）》, vol. 39, no. 6, pages 92 - 96 * |
| 徐红莉 等: "一种提高电压互感器现场精度测试效率的方法", 《湖南电力》, vol. 38, no. 3, pages 3 * |
| 杨林: "《220kV变电运维技术》", 东北大学出版社, pages: 92 - 96 * |
| 高帅 等: "一种智能变电站电子互感器高效现场校验方案", 《自动化与仪器仪表》, no. 12, pages 2 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101706535B (en) | Device and method for testing dielectric loss of high voltage transformer | |
| CN102540001B (en) | Method of checking alternating current loop of a 500kV transformer substation through carrying out simulated through-type three-phase short circuit | |
| CN101424728A (en) | On site precision detecting test line for high-voltage current transformer | |
| CN106383259A (en) | Induced current and inducted voltage measurement method of multi-circuit transmission lines on same tower | |
| CN104345245B (en) | Method for checking voltage transformer wiring correctness by using transformer turn ratio & group tester | |
| CN109782070A (en) | A kind of method of PT test short-circuit impedance | |
| CN104251978B (en) | Straight-flow system exchanges the test device that crosstalk and voltage pulsation influence on relay | |
| CN100410671C (en) | Method for on-line monitoring insulating hidden danger of double-pipe for transformer | |
| CN108152779A (en) | Electronic current mutual inductor check system and method | |
| CN108089144B (en) | Electronic current transformer field calibration system and method | |
| CN109765453A (en) | A kind of Protection secondary circuit wiring automatic tester | |
| CN111929526A (en) | Electronic voltage transformer checking system and method | |
| CN104155627B (en) | Error characteristic detection method of extra high voltage capacitive voltage transformer | |
| CN107912059A (en) | The switching device operating method of switching device, test device and transformer measuring device | |
| CN113162040A (en) | System and method for non-pressure nuclear phase of high-voltage station power supply of power plant | |
| CN102565614B (en) | Alternating voltage loop test method | |
| CN106885943A (en) | Cable detection plate and method, line sequence, impedance, insulating properties, degradation detecting method | |
| KR102494194B1 (en) | The apparatus for monitoring power system of electric vehicle charger. | |
| CN1083578C (en) | Device for testing protection relay connected with non-magnetic sensor | |
| CN207946512U (en) | Electronic current mutual inductor check system | |
| CN211955677U (en) | System of differential pressure monitor | |
| CN113589080A (en) | Automatic testing system and method for charger | |
| CN108872774B (en) | Converter detection method and device in protection device and aviation plug | |
| CN103760508B (en) | A kind of virtual medium loss device and detection method thereof | |
| JPH02296161A (en) | Method for detecting partial discharge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |