CN102565587A - Test method of electromagnetic compatibility of electronic instrument transformer - Google Patents
Test method of electromagnetic compatibility of electronic instrument transformer Download PDFInfo
- Publication number
- CN102565587A CN102565587A CN2012100073376A CN201210007337A CN102565587A CN 102565587 A CN102565587 A CN 102565587A CN 2012100073376 A CN2012100073376 A CN 2012100073376A CN 201210007337 A CN201210007337 A CN 201210007337A CN 102565587 A CN102565587 A CN 102565587A
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- mutual inductor
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- instrument transformer
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- 238000010998 test method Methods 0.000 title claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000003990 capacitor Substances 0.000 claims abstract description 11
- 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
-
- 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
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 field of measurement, particularly the test method of disconnector deciliter capacity current test electron formula mutual inductor Electro Magnetic Compatibility.
Background technology
At present the Electro Magnetic Compatibility of electronic mutual inductor product is according to National Standard GB/T 17626 electromagnetic compatibilities " carry out correlation test; Product electromagnetic protection performance failure fault repeatedly occurs in the electric system actual moving process under the qualified condition of each item EMC test project of accomplishing regulation and test findings.Through experimental study and theoretical analysis, Electro Magnetic Compatibility appears in electronic mutual inductor can not satisfy the requirement of electric system electromagnetic environment, 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 has only single harassing and wrecking source, like electrical fast transient (eft), and surge, pulsed magnetic field etc.The harassing and wrecking source that on-the-spot actual harassing and wrecking source is a plurality of parameters occurs simultaneously, like transient voltage, and transient magnetic field, transient current etc.Under all identical condition of each parameter, a plurality of parameters harassing and wrecking source applies than harsh many in 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 bigger; The 15ms pulse train that applies like electrical fast transient (eft); Interval 300ms; The transient pulse that actual disconnector produces is successively in the pulse of single job process, and the long duration of pulse can reach more than the 1s.Intensive long-time transient pulse is more severe to the product examination.
3) the electronic mutual inductor EMC test project of GB regulation and actual working voltage grade are irrelevant.According to experimental study and theoretical analysis, the characterisitic parameter and the electric pressure in harassing and wrecking source have substantial connection, and high more its electromagnetic interference (EMI) of electric pressure is strong more.
4) pilot project of GB regulation is the test of component-level mostly, promptly mainly electronic mutual inductor is carried out 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 electronic mutual inductor Electro Magnetic Compatibility, through this test, improves the on-the-spot operational reliability of electronic mutual inductor, reduces because of the not enough equipment failure that occurs of electromagnetic protection performance.
Technical scheme of the present invention is achieved in that and may further comprise the steps:
1) the high-tension transformer high-voltage output end is connected with disconnector one end, simultaneously parallelly connected one group of capacitive divider; The parallel connection of the disconnector other end one group of capacitive divider, load capacitor and tested electronic type voltage transformer; Simultaneously with before normalized current sensor and series connection of tested electronic current mutual inductor and the 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 have only one of them;
2) canonical measure equipment and tested electronic mutual inductor power up and are in normal operating conditions;
3) disconnector is in gate-dividing state;
4) the charged and up voltage of HT testing transformer is to by examination electronic mutual inductor rated operational voltage;
5) disconnector is closed, the signal of record standard measuring equipment and electronic mutual inductor output simultaneously;
6) 1～5 minute interval time, disconnector is separated the signal of record standard measuring equipment and electronic mutual inductor output simultaneously;
7) repeat 5～6 steps and carry out repeatedly, close the branch operation 10 times;
8) HT testing transformer step-down, power failure;
9) off-test;
The process of the test electronic mutual inductor device, communication failure and output waveform data do not occur and the comparison of reference waveform data is not unusual, this electronic mutual inductor stand the test.
The harassing and wrecking source of adopting disconnector deciliter capacity current to produce, real simulation the electric system actual condition.This harassing and wrecking source has that multiparameters such as transient state pulse voltage, pulse current and pulsed magnetic field apply simultaneously and the characteristics of longer duration, lists working voltage grade factor in test parameters simultaneously, and actual tests is respond well.Adopt the method that electronic mutual inductor is carried out system-level interference free performance test, can significantly improve the interference free performance of electronic mutual inductor, reduce the failure rate of electronic mutual inductor in use.
Description of drawings
Fig. 1 is a disconnector deciliter capacity current harassing and wrecking source test connection schematic diagram.
Among the 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);
CT2 is tried electronic current mutual inductor;
PT is tried electronic type voltage transformer;
The C load capacitor
The K disconnector; According to the supporting use-pattern of electronic mutual inductor, select AIS disconnector (air insulation) and GIS disconnector (gas fully closed combined electric unit) for use.
Below in conjunction with accompanying drawing content of the present invention is done further explain.
Embodiment
With reference to Fig. 1; High-tension transformer output test voltage magnitude is with identical by examination electronic mutual inductor nominal operation main circuit voltage; It is that 0.5A chooses that the load capacitor capacity is connected back steady-state current value by disconnector; By the examination electronic mutual inductor once part, secondary connect and the electronics merge cells carries out system's assembling by actual applying working condition and connects, in the energising of process of the test electronic mutual inductor and press normal operation mode and move.Disconnector is dividing or is closing in 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, are differentiated 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 parallelly connected one group of capacitive divider; Disconnector other end parallel connection one group of capacitive divider, load capacitor and tested electronic type voltage transformer are simultaneously with (high-voltage power supply outbound course for foremost) before normalized current sensor and the series connection of tested electronic current mutual inductor and the load capacitor.Tested electronic type voltage transformer and tested electronic current mutual inductor can exist simultaneously, also can have only one of them.
2) canonical measure equipment and tested electronic mutual inductor power up and are in normal operating conditions.
3) disconnector is in gate-dividing state;
4) the charged and up voltage of HT testing transformer is to by examination electronic mutual inductor rated operational voltage.
5) disconnector is closed, the signal of record standard measuring equipment and electronic mutual inductor output simultaneously.
6) certain interval of time (1～5 minute) separates disconnector, the signal of record standard measuring equipment and electronic mutual inductor output simultaneously.
7) repeat 5～6 steps and carry out repeatedly (advising closing branch 10 times) operation.
8) HT testing transformer step-down, power failure.
9) off-test.
The test criterion:
The process of the test electronic mutual inductor device, communication failure and output waveform data do not occur and the comparison of reference waveform data is not unusual, this electronic mutual inductor stand the test.
Claims (1)
1. the test method of an electronic mutual inductor Electro Magnetic Compatibility is characterized in that, may further comprise the steps:
1) the high-tension transformer high-voltage output end is connected with disconnector one end, simultaneously parallelly connected one group of capacitive divider; The parallel connection of the disconnector other end one group of capacitive divider, load capacitor and tested electronic type voltage transformer; Simultaneously with before normalized current sensor and series connection of tested electronic current mutual inductor and the 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 have only one of them;
2) canonical measure equipment and tested electronic mutual inductor power up and are in normal operating conditions;
3) disconnector is in gate-dividing state;
4) the charged and up voltage of HT testing transformer is to by examination electronic mutual inductor rated operational voltage;
5) disconnector is closed, the signal of record standard measuring equipment and electronic mutual inductor output simultaneously;
6) 1～5 minute interval time, disconnector is separated the signal of record standard measuring equipment and electronic mutual inductor output simultaneously;
7) repeat 5～6 steps and carry out repeatedly, close the branch operation 10 times;
8) HT testing transformer step-down, power failure;
9) off-test;
The test criterion:
The process of the test electronic mutual inductor device, communication failure and output waveform data do not occur and the comparison of reference waveform data is not unusual, 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 |
|---|---|
| CN102565587A true CN102565587A (en) | 2012-07-11 |
| CN102565587B CN102565587B (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100073376A Active CN102565587B (en) | 2012-01-11 | 2012-01-11 | Test method of electromagnetic compatibility of electronic instrument transformer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102565587B (en) |
| WO (1) | WO2013104197A1 (en) |
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| 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 |
| WO2013104197A1 (en) * | 2012-01-11 | 2013-07-18 | 陕西电力科学研究院 | Method for testing electromagnetic compatibility of electronic mutual inductor |
| CN103487679A (en) * | 2013-09-09 | 2014-01-01 | 国家电网公司 | AIS electronic transformer testing system and testing method thereof |
| CN103969616A (en) * | 2014-05-21 | 2014-08-06 | 山东泰开高压开关有限公司 | Type test device used for electronic transformers |
| CN104034973A (en) * | 2014-05-06 | 2014-09-10 | 国家电网公司 | Electronic current transformer testing system and testing method |
| CN104155626A (en) * | 2014-08-15 | 2014-11-19 | 国家电网公司 | System of detecting ground potential rising-resisting ability of voltage transformer |
| CN105137135A (en) * | 2015-08-13 | 2015-12-09 | 国家电网公司 | Simulated electromagnetic disturbance source for isolating switch |
| 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 |
| 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 |
| CN107271945A (en) * | 2017-06-26 | 2017-10-20 | 国家电网公司 | A kind of system-level electronic mutual inductor EMC test system and method |
| 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 |
| CN111077395A (en) * | 2019-12-27 | 2020-04-28 | 华北电力大学（保定） | Electromagnetic interference protection design method for acquisition board card of electronic transformer of transformer substation |
| 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 |
| 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 |
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| CN103399288B (en) * | 2013-08-15 | 2016-01-13 | 国家电网公司 | Electronic mutual inductor detection method and Oscillograph |
| 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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| 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 |
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| CN104034973A (en) * | 2014-05-06 | 2014-09-10 | 国家电网公司 | Electronic current transformer testing system and testing method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102565587B (en) | 2013-12-25 |
| WO2013104197A1 (en) | 2013-07-18 |
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