CN102565587B - Test method of electromagnetic compatibility of electronic instrument transformer - Google Patents
Test method of electromagnetic compatibility of electronic instrument transformer Download PDFInfo
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- CN102565587B CN102565587B CN2012100073376A CN201210007337A CN102565587B CN 102565587 B CN102565587 B CN 102565587B CN 2012100073376 A CN2012100073376 A CN 2012100073376A CN 201210007337 A CN201210007337 A CN 201210007337A CN 102565587 B CN102565587 B CN 102565587B
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- 238000010998 test method Methods 0.000 title claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims abstract description 11
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 abstract description 15
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- 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
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
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- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a test method of electromagnetic compatibility of an electronic instrument transformer. The output test voltage amplitude of a high-voltage transformer is same with the rated working main-loop voltage of a tested electronic instrument transformer, and the capacity of a load capacitor is selected according to a steady-state current value being 0.5 A after a disconnecting switch is connected. A primary part unit, a secondary connecting unit and an electronic merging unit of the tested electronic instrument transformer are systematically assembled and connected according to an actual use condition. In the test process, the electronic instrument transformer is powered on and operates in a normal working mode. In the process of the disconnecting switch connecting or disconnecting the capacitor, a main loop can generate many times of arc breakdown and extinguishing transient processes, and the transient processes can generate many times of pulse currents, transient over-voltages and pulsed magnet fields. The numerical value of primary voltage current waveforms is measured to compare with the output characteristic and working condition of the electronic instrument transformer, and the electromagnetic anti-jamming performance of the electronic instrument transformer is judged. The reliability of the field operation of the electronic instrument transformer is increased, and the equipment failure rate is reduced.
Description
Technical field
The invention belongs to the EMC test fields of measurement, particularly the test method of disconnector deciliter capacity current test electron formula mutual inductor Electro Magnetic Compatibility.
Background technology
The Electro Magnetic Compatibility of electronic mutual inductor product is to carry out correlation test according to GB " GB/T 17626 electromagnetic compatibilities " at present, product, under the every EMC test project that completes regulation the qualified condition of test findings, electromagnetic protection performance failure fault repeatedly occurs in the electric system actual moving process.Through experimental study and theoretical analysis, electronic mutual inductor occurs that Electro Magnetic Compatibility can not meet the Power System Electromagnetic Environment requirement, and main cause is:
1) the GB regulation is the same time to carry out single pilot project, i.e. test applies at every turn and only has single harassing and wrecking source, as electrical fast transient (eft), and surge, pulsed magnetic field etc.The harassing and wrecking source of on-the-spot reality is that the harassing and wrecking source of a plurality of parameters occurs simultaneously, as transient voltage, and transient magnetic field, transient current etc.In each parameter all under identical condition, a plurality of parameters harassing and wrecking source applies harsh more than the harassing and wrecking source of single parameter simultaneously.
2) the measurement parameter difference of the discrete trial parameter of GB regulation and actual field is larger, the 15ms pulse train applied as electrical fast transient (eft), interval 300ms, the transient pulse that actual disconnector produces, in the pulse of single job process, be successively, more than the longer duration of pulse can reach 1s.Intensive long-time transient pulse is more severe to the product examination.
3) the electronic mutual inductor EMC test project of GB regulation is irrelevant with the actual electric pressure of using.According to experimental study and theoretical analysis, characterisitic parameter and the electric pressure in harassing and wrecking source have substantial connection, and higher its electromagnetic interference (EMI) of electric pressure is stronger.
4) pilot project of GB regulation is the test of component-level mostly, mainly electronic mutual inductor is carried out to the test of each parts, lacks system-level EMC test project, and system-level EMC test project and actual operating mode are more pressed close to.
Summary of the invention
In order to overcome above-mentioned deficiency, the present invention proposes a kind of test method of electromagnetic compatibility of electronic instrument transformer, by this test, improves the on-the-spot operational reliability of electronic mutual inductor, reduces because of the not enough equipment failure occurred of electromagnetic protection performance.
Technical scheme of the present invention is achieved in that and comprises the following steps:
1) the high-tension transformer high-voltage output end is connected with disconnector one end, simultaneously one group of capacitive divider in parallel; The disconnector other end one group of capacitive divider, load capacitor and tested electronic type voltage transformer in parallel, simultaneously by before normalized current sensor and the series connection of tested electronic current mutual inductor and load capacitor, the high-voltage power supply outbound course is for foremost, and tested electronic type voltage transformer and tested electronic current mutual inductor exist simultaneously or only have one of them;
2) canonical measure equipment and tested electronic mutual inductor power up in normal operating conditions;
3) disconnector is in gate-dividing state;
4) the charged and up voltage of HT testing transformer is to tested electronic mutual inductor rated operational voltage;
5) by the disconnector closure, while record standard measuring equipment and electronic mutual inductor output signal;
6) 1～5 minute interval time, disconnector is separated, simultaneously record standard measuring equipment and electronic mutual inductor output signal;
7) repeat 5～6 steps and carry out repeatedly, close a minute operation for 10 times;
8) HT testing transformer step-down, power failure;
9) off-test;
The process of the test electronic mutual inductor does not occur that device, communication failure and output waveform data and reference waveform comparing are not abnormal, this electronic mutual inductor stand the test.
The harassing and wrecking source that adopts disconnector deciliter capacity current to produce, real simulation the electric system actual condition.This harassing and wrecking source has the advantages that the multiparameters such as transient state pulse voltage, pulse current and pulsed magnetic field apply simultaneously and the duration is long, and using the electric pressure factor to list test parameters in, actual tests is respond well simultaneously.Adopt the method to carry out system-level interference free performance test to electronic mutual inductor, can significantly improve the interference free performance of electronic mutual inductor, reduce the failure rate of electronic mutual inductor in use procedure.
The accompanying drawing explanation
Fig. 1 is disconnector deciliter capacity current harassing and wrecking source test connection schematic diagram.
In figure:
The B HT testing transformer;
P1 high-voltage power supply capacitive divider; (normal voltage sensor)
P2 high-voltage load lateral capacitance voltage divider;
The CT1 load current is measured mutual inductor (normalized current sensor);
The tested electronic current mutual inductor of CT2;
The tested electronic type voltage transformer of PT;
The C load capacitor
The K disconnector; Support the use mode according to electronic mutual inductor, select AIS disconnector (air insulation) and GIS disconnector (gas fully closed combined electric unit).
Below in conjunction with accompanying drawing, content of the present invention is described in further detail.
Embodiment
With reference to Fig. 1, high-tension transformer output test voltage magnitude is identical with tested electronic mutual inductor nominal operation main circuit voltage, it is that 0.5A chooses that the load capacitor capacity is connected rear steady-state current value by disconnector, tested electronic mutual inductor once part, secondary connection and electronics merge cells carries out the system assembly connection by actual applying working condition, at the process of the test electronic mutual inductor, switches on and presses the normal operation mode operation.Disconnector is in dividing or closing the capacitor process, to produce repeatedly arc through and extinguish transient state process at major loop, this transient state process will produce the multiple pulses electric current, transient overvoltage (is used the GIS isolator operation, can produce very fast transient overvoltage VFTO) and pulsed magnetic field, survey record primary voltage electric current and electronic mutual inductor output valve and duty, according to measuring output characteristics and the duty of primary voltage current waveform numeric ratio to electronic mutual inductor, differentiate the electromagnetism interference free performance of electronic mutual inductor.
Test procedure:
1) the high-tension transformer high-voltage output end is connected with disconnector one end, simultaneously one group of capacitive divider in parallel; The disconnector other end in parallel one group of capacitive divider, load capacitor and tested electronic type voltage transformer, simultaneously by (high-voltage power supply outbound course for foremost) before normalized current sensor and the series connection of tested electronic current mutual inductor and load capacitor.Tested electronic type voltage transformer and tested electronic current mutual inductor can exist simultaneously, also can only have one of them.
2) canonical measure equipment and tested electronic mutual inductor power up in normal operating conditions.
3) disconnector is in gate-dividing state;
4) the charged and up voltage of HT testing transformer is to tested electronic mutual inductor rated operational voltage.
5) by the disconnector closure, while record standard measuring equipment and electronic mutual inductor output signal.
6) certain interval of time (1～5 minute), separate disconnector, simultaneously record standard measuring equipment and electronic mutual inductor output signal.
7) repeat 5～6 steps and carry out repeatedly (advise closing for 10 times minute) operation.
8) HT testing transformer step-down, power failure.
9) off-test.
The test criterion:
The process of the test electronic mutual inductor does not occur that device, communication failure and output waveform data and reference waveform comparing are not abnormal, this electronic mutual inductor stand the test.
Claims (1)
1. the test method of an electromagnetic compatibility of electronic instrument transformer, is characterized in that, comprises the following steps:
1) the HT testing transformer high-voltage output end is connected with disconnector one end, simultaneously one group of capacitive divider in parallel; The disconnector other end one group of capacitive divider, load capacitor and tested electronic type voltage transformer in parallel, before normalized current sensor and tested electronic current mutual inductor being series to load capacitor simultaneously, the high-voltage power supply outbound course is for foremost, and tested electronic type voltage transformer and tested electronic current mutual inductor exist simultaneously or only have one of them;
2) canonical measure equipment and tested electronic mutual inductor power up in normal operating conditions;
3) disconnector is in gate-dividing state;
4) the charged and up voltage of HT testing transformer is to tested electronic mutual inductor rated operational voltage;
5) by the disconnector closure, while record standard measuring equipment and electronic mutual inductor output signal;
6) 1～5 minute interval time, disconnector is separated, simultaneously record standard measuring equipment and electronic mutual inductor output signal;
7) repeat 5～6 steps and repeatedly close a minute operation;
8) HT testing transformer step-down, power failure;
9) off-test;
The test criterion:
The process of the test electronic mutual inductor does not occur that device, communication failure and output waveform data and reference waveform comparing are not abnormal, this electronic mutual inductor stand the test.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100073376A CN102565587B (en) | 2012-01-11 | 2012-01-11 | Test method of electromagnetic compatibility of electronic instrument transformer |
| PCT/CN2012/081536 WO2013104197A1 (en) | 2012-01-11 | 2012-09-18 | Method for testing electromagnetic compatibility of electronic mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100073376A CN102565587B (en) | 2012-01-11 | 2012-01-11 | Test method of electromagnetic compatibility of electronic instrument transformer |
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| Publication Number | Publication Date |
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| CN102565587A CN102565587A (en) | 2012-07-11 |
| CN102565587B true CN102565587B (en) | 2013-12-25 |
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| CN2012100073376A Active CN102565587B (en) | 2012-01-11 | 2012-01-11 | Test method of electromagnetic compatibility of electronic instrument transformer |
Country Status (2)
| Country | Link |
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| CN (1) | CN102565587B (en) |
| WO (1) | WO2013104197A1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565587B (en) * | 2012-01-11 | 2013-12-25 | 陕西电力科学研究院 | Test method of electromagnetic compatibility of electronic instrument transformer |
| CN103116125A (en) * | 2012-12-31 | 2013-05-22 | 施耐德电气华电开关(厦门)有限公司 | Test loop for non-sustained disruptive discharge (NSDD) test of vacuum circuit breaker |
| CN103399288B (en) * | 2013-08-15 | 2016-01-13 | 国家电网公司 | Electronic mutual inductor detection method and Oscillograph |
| CN103487679B (en) * | 2013-09-09 | 2015-08-05 | 国家电网公司 | A kind of AIS electric mutual inductor test macro and method thereof |
| CN104034973A (en) * | 2014-05-06 | 2014-09-10 | 国家电网公司 | Electronic current transformer testing system and testing method |
| CN103969616B (en) * | 2014-05-21 | 2016-08-24 | 山东泰开高压开关有限公司 | Type approval test device for electronic mutual inductor |
| CN104155626B (en) * | 2014-08-15 | 2017-03-08 | 国家电网公司 | The system that ground potential climbing capacity resisted by a kind of detection voltage transformer |
| CN105785156A (en) * | 2014-12-26 | 2016-07-20 | 国家电网公司 | Transformer station intelligent electronic device multi-source anti-interference degree characteristic testing method |
| CN105137135B (en) * | 2015-08-13 | 2018-04-17 | 国家电网公司 | A kind of disconnecting switch simulation electromagnetic disturbance source |
| CN106772190A (en) * | 2016-11-23 | 2017-05-31 | 国家电网公司 | The test comparison method and device of electronic type voltage transformer under the conditions of a kind of VFTO |
| CN106841852A (en) * | 2016-12-29 | 2017-06-13 | 国家电网公司 | A kind of system and method based on dielectric breakdown generation electric pulse group |
| CN107271945B (en) * | 2017-06-26 | 2020-05-12 | 国家电网公司 | System-level electronic transformer electromagnetic compatibility test system and method |
| CN111562449A (en) * | 2019-02-13 | 2020-08-21 | 南京南瑞继保电气有限公司 | Anti-electromagnetic interference test device for converter valve and test method thereof |
| CN110609247A (en) * | 2019-09-19 | 2019-12-24 | 国网天津市电力公司电力科学研究院 | Transient earth voltage partial discharge detector calibration system |
| CN111077395B (en) * | 2019-12-27 | 2021-10-22 | 华北电力大学（保定） | Electromagnetic interference protection design method for acquisition board card of electronic transformer of transformer substation |
| CN112816930A (en) * | 2020-12-31 | 2021-05-18 | 国家电网有限公司 | Test method and system for determining radiation immunity of electronic transformer |
| CN114740246B (en) * | 2022-03-25 | 2023-01-31 | 苏州熠品质量技术服务有限公司 | Automatic measuring device for working voltage of transformer |
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| GB2266380A (en) * | 1992-04-25 | 1993-10-27 | Keith Graham Richens | Electromagnetic compatibility testing |
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| Publication number | Publication date |
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| WO2013104197A1 (en) | 2013-07-18 |
| CN102565587A (en) | 2012-07-11 |
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