CN109164363A - A kind of 1000kV reactor local discharge test device and method - Google Patents
A kind of 1000kV reactor local discharge test device and method Download PDFInfo
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- CN109164363A CN109164363A CN201811317937.6A CN201811317937A CN109164363A CN 109164363 A CN109164363 A CN 109164363A CN 201811317937 A CN201811317937 A CN 201811317937A CN 109164363 A CN109164363 A CN 109164363A
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
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Abstract
The invention discloses a kind of 1000kV reactor local discharge test device and method, experimental rig includes power module, boost module, capacitor, insulating supporting pedestal, the double-deck grading ring, single layer grading ring, detection impedance, High Frequency Current Sensor and PD meter；Wherein, power module is that 2 500kW frequency conversion sources compose in parallel, and boost module is composed in parallel by 2 500kVA step-up transformers, forms capacitor tower in series and parallel using 12 economize on electricity containers.The present invention is grounded high-frequency current using the end shield of high-voltage bushing pulse current and iron core, folder, low-tension bushing of detection, diagnoses reactor built-in electrical insulation defect.The present invention solves the problems, such as that 1000kV reactor scene can not carry out high-pressure side major insulation and the detection of winding minor insulation, partial discharge AF panel difficulty, realizes the live partial discharge detection and diagnosis of 1000kV oil immersed type shunt reactor.
Description
Technical field
The present invention relates to a kind of 1000kV reactor local discharge test device and methods, belong to high voltage detection technique field.
Background technique
1000kV high-voltage shunt reactor is remote, large capacity extra-high-voltage alternating current engineering important equipment, inside connect
Mouth is relative complex, and the installation positions such as various bolts, shading ring, shielding cap are more, if designing inconsiderate or assembly technology
Control is not tight, is easy to happen shelf depreciation.For 1000kV high-voltage shunt reactor, local discharge test voltage is high, site environment is multiple
It is miscellaneous, major insulation, minor insulation defects detection can not be carried out at the scene, and there are certain risks for reactor operation.Research and develop 1000kV oil
Immersion high-voltage shunt reactor scene local discharge test device and detection method are most important.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of existing technologies, a kind of 1000kV reactor partial discharge is provided
Experimental rig and method realize extra-high voltage reactor scene major insulation, minor insulation partial discharge detection, can be before reactor puts into operation
Detection internal flaw in time, avoids equipment belt defect from putting into operation, and substantially increases equipment safety operation level.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
A kind of 1000kV reactor local discharge test device, including it is power module, boost module, capacitor tower, insulating supporting pedestal, double
Layer grading ring, single layer grading ring, detection impedance, High Frequency Current Sensor and PD meter；
The insulating supporting pedestal is used to support capacitor tower, and the insulating supporting pedestal connects boost module, the boost module
Connect power module；
The capacitor tower is composed in series by capacitor group, and single layer grading ring is arranged in the junction between every group capacitor group, to even
It is pressed socket part position；The double-deck grading ring is set on the top of the capacitor group on top, the capacitor group on the top is drawn high
Crimping, the bilayer grading ring press high-voltage line and the junction of capacitor group；
The PD meter connecting detection impedance and High Frequency Current Sensor；The detection impedance and tested 1000kV high-voltage parallel electricity
Anti- device end shield of high-voltage bushing connection, while monitoring voltage and Partial discharge signal；The High Frequency Current Sensor is set in iron core, folder
With neutral ground line, for acquiring the high-frequency pulse current of iron core, folder and neutral ground line；The PD meter is to detection
The monitoring signals of impedance and High Frequency Current Sensor are analyzed, and the inside for detecting tested 1000kV high-voltage shunt reactor lacks
It falls into.
Capacitor tower above-mentioned is composed in series by 4 group capacitor groups, and every group capacitor group is in parallel using 3 economize on electricity containers.
Single-unit rated capacitor voltage above-mentioned is 300kV, capacitance 101.34nF.
Power module above-mentioned is composed in parallel using 2 500kW variable-frequency power sources, and frequency range is 30~300Hz.
Boost module above-mentioned is composed in parallel by 2 500kVA exciting transformers.
The low-pressure side configuration voltage of boost module above-mentioned is 350V, 400V and 450V, and it is 3.5kV that high-pressure side, which configures voltage,
And 7kV.
A kind of partial discharge detection method of 1000kV reactor, comprising the following steps:
1) variable-frequency power sources in connection 380V power supply and experimental rig, using capacitor tower in the halo-free lead joint test device of high pressure
High-voltage end and tested 1000kV high-voltage shunt reactor bushing pile crown；
2) frequency for adjusting power module, makes entire test loop reach resonant state；
3) power module is adjusted, high-voltage shunt reactor is gradually increased and bears voltage to test voltage.
Test voltage above-mentioned is determined according to test objective.
Above-mentioned further includes that PD meter carries out difference processing to the high-frequency current of iron core, folder ground line, carries out interference suppression
System and defect diagonsis, in conjunction with high voltage bushing terminal, low-tension bushing ground line screen monitoring signals, analyzing defect position and severity.
Experimental rig above-mentioned is 1000kV reactor local discharge test device.
Advantageous effects of the invention:
The present invention solve the problems, such as extra-high voltage reactor major insulation, minor insulation discharge property defect can not on-site test, have inspection
The features such as surveying safety, high sensitivity.
The present invention realizes extra-high voltage reactor scene major insulation, minor insulation partial discharge detection for the first time, can throw in reactor
Internal flaw is detected before fortune in time, equipment belt defect is avoided to put into operation, substantially increases equipment safety operation level, is had extensive
Economic results in society provide strong support for safe and stable operation and the extra-high voltage project construction of power grid.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of apparatus of the present invention.
Specific embodiment
The invention will be further described below.Following embodiment is only used for clearly illustrating technical side of the invention
Case, and not intended to limit the protection scope of the present invention.
As shown in Figure 1,1000kV reactor local discharge test device of the invention, including power module 1, boost module 2, electricity
Hold tower, insulating supporting pedestal 3, the double-deck grading ring 5, single layer grading ring 6, detection impedance 7, High Frequency Current Sensor 8 and PD meter
9.Specifically,
Capacitor tower is made of in series and parallel 12 economize on electricity containers 4, capacitance 76nF.Specially capacitor is composed in series by 4 group capacitor groups
Tower, every group of capacitance are 304.02nF；Every group capacitor group is in parallel using 3 economize on electricity containers, single-unit rated capacitor voltage
300kV, capacitance 101.34nF.
Insulating supporting pedestal 3 is used to support the capacitor tower of capacitor composition, and insulating supporting pedestal 3 connects boost module 2, rises
Die block 2 connects power module 1.
Power module is composed in parallel using 2 500kW variable-frequency power sources in the present invention, 30~300Hz of frequency range.
Two variable-frequency power sources are by a control box synchronously control, reason: variable-frequency power sources is used in parallel, asynchronous control
System, which may cause between two frequency conversion sources, there is circulation, influences equipment safety.
Boost module is composed in parallel by 2 500kVA exciting transformers, and low-pressure side can configure voltage 350V, 400V, 450V,
It is selected for user, high-pressure side can configure voltage 3.5kV, 7kV, select for user.By high and low pressure side combinations of voltages, meet humorous
Vibration quality factor difference demand.
After the completion of building, the capacity of experimental rig is 1000kW, voltage rating 1200kV, 30~300Hz of frequency range.
Single layer grading ring 6 is arranged in junction between every group capacitor group, is pressed connecting portion；Electricity on top
The double-deck grading ring 5 is arranged in the top of container group, is pressed high-voltage line and the junction of capacitor group.
9 connecting detection impedance 7 of PD meter and High Frequency Current Sensor 8；Detection impedance 7 is connect with end shield of high-voltage bushing, together
When monitoring voltage and Partial discharge signal；High Frequency Current Sensor 8 is set in iron core, folder and neutral ground line, for acquiring iron
The high-frequency pulse current of the heart, folder and neutral ground line.9 pairs of PD meter detection impedances and the monitoring of High Frequency Current Sensor letter
It number is analyzed, provides data basis for defect diagonsis and identification.
1000kV reactor local discharge test device of the invention carries out live partial discharge detection method, utilizes above-mentioned apparatus, packet
Include following steps:
1) electric voltage frequency and amplitude are adjusted: the variable-frequency power sources in connection 380V power supply and experimental rig, using the halo-free lead of high pressure
The high-voltage shunt reactor bushing pile crown of capacitor tower high-voltage end and tested 1000kV in joint test device adjusts power supply mould
The frequency of block makes entire test loop reach resonant state, adjusts power module, gradually increases high-voltage shunt reactor and bears electricity
It is depressed into test voltage；Test voltage amplitude is determined according to test objective.
2) partial discharge detection: PD meter carries out difference processing to the high-frequency current of iron core, folder ground line, carries out AF panel
And defect diagonsis, in conjunction with high voltage bushing terminal, low-tension bushing ground line screen monitoring signals, analyzing defect position and severity.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of 1000kV reactor local discharge test device, which is characterized in that including power module, boost module, capacitor tower, absolutely
Edge support base, the double-deck grading ring, single layer grading ring, detection impedance, High Frequency Current Sensor and PD meter；
The insulating supporting pedestal is used to support capacitor tower, and the insulating supporting pedestal connects boost module, the boost module
Connect power module；
The capacitor tower is composed in series by capacitor group, and single layer grading ring is arranged in the junction between every group capacitor group, to even
It is pressed socket part position；The double-deck grading ring is set on the top of the capacitor group on top, the capacitor group on the top is drawn high
Crimping, the bilayer grading ring press high-voltage line and the junction of capacitor group；
The PD meter connecting detection impedance and High Frequency Current Sensor；The detection impedance and tested 1000kV high-voltage parallel electricity
Anti- device end shield of high-voltage bushing connection, while monitoring voltage and Partial discharge signal；The High Frequency Current Sensor is set in iron core, folder
With neutral ground line, for acquiring the high-frequency pulse current of iron core, folder and neutral ground line；The PD meter is to detection
The monitoring signals of impedance and High Frequency Current Sensor are analyzed, and the inside for detecting tested 1000kV high-voltage shunt reactor lacks
It falls into.
2. a kind of 1000kV reactor local discharge test device according to claim 1, which is characterized in that the capacitor tower by
4 group capacitor groups are composed in series, and every group capacitor group is in parallel using 3 economize on electricity containers.
3. a kind of 1000kV reactor local discharge test device according to claim 2, which is characterized in that single-unit capacitor volume
Constant voltage is 300kV, capacitance 101.34nF.
4. a kind of 1000kV reactor local discharge test device according to claim 1, which is characterized in that the power module
It is composed in parallel using 2 500kW variable-frequency power sources, frequency range is 30~300Hz.
5. a kind of 1000kV reactor local discharge test device according to claim 1, which is characterized in that the boost module
It is composed in parallel by 2 500kVA exciting transformers.
6. a kind of 1000kV reactor local discharge test device according to claim 5, which is characterized in that the boost module
Low-pressure side configuration voltage be 350V, 400V and 450V, high-pressure side configure voltage be 3.5kV and 7kV.
7. a kind of partial discharge detection method of 1000kV reactor, which comprises the following steps:
1) variable-frequency power sources in connection 380V power supply and experimental rig, using capacitor tower in the halo-free lead joint test device of high pressure
High-voltage end and tested 1000kV high-voltage shunt reactor bushing pile crown；
2) frequency for adjusting power module, makes entire test loop reach resonant state；
3) power module is adjusted, high-voltage shunt reactor is gradually increased and bears voltage to test voltage.
8. the method according to the description of claim 7 is characterized in that the test voltage is determined according to test objective.
9. the method according to the description of claim 7 is characterized in that further including high frequency of the PD meter to iron core, folder ground line
Electric current carries out difference processing, carries out AF panel and defect diagonsis, in conjunction with high voltage bushing terminal, low-tension bushing ground line screen monitoring letter
Number, analyzing defect position and severity.
10. according to method described in claim 7 to 9 any one, which is characterized in that the experimental rig is claim 1
To 1000kV reactor local discharge test device described in 6 any one.
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| CN201811317937.6A CN109164363A (en) | 2018-11-07 | 2018-11-07 | A kind of 1000kV reactor local discharge test device and method |
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| CN201811317937.6A CN109164363A (en) | 2018-11-07 | 2018-11-07 | A kind of 1000kV reactor local discharge test device and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110850121A (en) * | 2019-11-13 | 2020-02-28 | 盐城市雷击环保科技有限公司 | High-voltage variable-frequency resonance test device of boosting and pressure measuring common-tower structure |
| CN111505465A (en) * | 2020-06-03 | 2020-08-07 | 国网江苏省电力有限公司电力科学研究院 | Method and device for building database, looking up table and positioning local discharge characteristics of winding equipment |
| CN112611933A (en) * | 2020-12-31 | 2021-04-06 | 国网山西省电力公司电力科学研究院 | Dry-type reactor long-term operation evaluation device and evaluation method thereof |
| CN114325280A (en) * | 2021-11-26 | 2022-04-12 | 国网辽宁省电力有限公司大连供电公司 | High-voltage adjustable reactor |
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| CN102193051A (en) * | 2010-03-05 | 2011-09-21 | 湖北省电力试验研究院 | Field local discharge testing device and method of 1000 kV alternating current extra-high voltage transformer |
| CN106443395A (en) * | 2016-12-01 | 2017-02-22 | 山东电力设备有限公司 | Ultra-high/extra-high voltage reactor local discharge test circuit compensating apparatus |
| CN106501696A (en) * | 2016-10-19 | 2017-03-15 | 云南电网有限责任公司电力科学研究院 | A kind of 500kV high-voltage shunt reactors scene local discharge test system and method |
| CN206235706U (en) * | 2016-12-14 | 2017-06-09 | 云南电网有限责任公司电力科学研究院 | A kind of high voltage reactor scene partial discharge and overpressure resistance detecting device |
| CN107436399A (en) * | 2017-06-30 | 2017-12-05 | 国家电网公司 | High altitude localities 750kV shunt reactor local discharge test devices |
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| CN102193051A (en) * | 2010-03-05 | 2011-09-21 | 湖北省电力试验研究院 | Field local discharge testing device and method of 1000 kV alternating current extra-high voltage transformer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110850121A (en) * | 2019-11-13 | 2020-02-28 | 盐城市雷击环保科技有限公司 | High-voltage variable-frequency resonance test device of boosting and pressure measuring common-tower structure |
| CN111505465A (en) * | 2020-06-03 | 2020-08-07 | 国网江苏省电力有限公司电力科学研究院 | Method and device for building database, looking up table and positioning local discharge characteristics of winding equipment |
| CN112611933A (en) * | 2020-12-31 | 2021-04-06 | 国网山西省电力公司电力科学研究院 | Dry-type reactor long-term operation evaluation device and evaluation method thereof |
| CN112611933B (en) * | 2020-12-31 | 2024-05-10 | 国网山西省电力公司电力科学研究院 | Device and method for evaluating long-term operation of dry-type reactor |
| CN114325280A (en) * | 2021-11-26 | 2022-04-12 | 国网辽宁省电力有限公司大连供电公司 | High-voltage adjustable reactor |
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