CN110208661A - Offshore boosting station transformer pressure resistance local discharge test method - Google Patents
Offshore boosting station transformer pressure resistance local discharge test method Download PDFInfo
- Publication number
- CN110208661A CN110208661A CN201910543238.1A CN201910543238A CN110208661A CN 110208661 A CN110208661 A CN 110208661A CN 201910543238 A CN201910543238 A CN 201910543238A CN 110208661 A CN110208661 A CN 110208661A
- Authority
- CN
- China
- Prior art keywords
- test
- voltage
- transformer
- partial discharge
- frequency
- 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
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
- G01R31/12—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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a kind of offshore boosting station transformer pressure resistance local discharge test method, it the steps include: one, scaffold and frame plate set up according to the structure in main transformer room；Two, high-potting instrument is placed on zero meter, and upper main transformer pressurization place is drawn from zero meter by extra-high voltage experiment lead；Three, the tool and equipment of experiment needs are prepared and are overhauled, and check according to respective standard and guarantee safe distance；Four, sine wave is exported using no partial discharge frequency conversion power supply, by symmetrical pressuring method, according to pressurization steps, ac voltage withstanding test successively is carried out to A, B, C three-phase, corresponding insulation resistance is measured and is compared with relevant criterion, obtain test result；Five, after test is finished and is substantially discharged, each test connection of dismantling removes all safety measures；Apparatus of the present invention output is sine wave, and waveform distortion is small, does not need measurement peak value, limited can reduce interference of the external environment to test using high-potting cable, it is more convenient to test, and greatly shortens test period.
Description
Technical field:
The present invention relates to large-scale transformer equipment measurement of partial discharge fields, more particularly to a kind of offshore boosting station transformer pressure resistance
Local discharge test method.
Background technique:
Power transformer all can normally make it as the important component in operation of power networks, its own quality and mounting process
With impacting, partial discharge test is taken to carry out comprehensive inspection to its indices in transformer at present, to realize
The target of safe power supply.
Measurement of partial discharge is increasingly run by large-scale power transformer and manages as the pilot project that can be avoided damage to
The attention for managing unit, because it is one of the important indicator of determining transformer insulating system structural reliability.Measurement of partial discharge
Purpose be prove it is internal exist without destructive discharge source, while it is strong with the presence or absence of dielectric to analyze inside transformer
High region is spent, is caused damages because such region may run transformer long-term safety.
Frequency changing power device in the prior art is square wave output, and by sine made of waveform shaping, number of devices is more
Volume is big, and waveform distortion is big, influences experiment effect；
Test cable used in traditional experiment process requires the safe distance of test high, site environment requirement height, for
The obvious effect of test increases the unstability of test.
Summary of the invention:
The technical problems to be solved by the present invention are: overcome the deficiencies of the prior art and provide a kind of structure it is simple, it is easy to carry,
The offshore boosting station transformer pressure resistance local discharge test method that can be disassembled, can hang and can place on the ground.
The technical scheme is that a kind of offshore boosting station transformer pressure resistance local discharge test method, the steps include: step
One, scaffold and frame plate are set up according to the structure in main transformer room；
Step 2: high-potting instrument is placed on zero meter, and upper main transformer pressurization place is drawn from zero meter by extra-high voltage experiment lead；
Step 3: the tool and equipment to experiment needs are prepared and overhaul, and check according to respective standard and guarantee peace
Full distance；
Step 4: sine wave is exported using no partial discharge frequency conversion power supply, it is successively right according to pressurization steps by symmetrical pressuring method
A, B, C three-phase carry out ac voltage withstanding test, measure corresponding insulation resistance and compare with relevant criterion, obtain test knot
Fruit；
Step 5: test finishes after being substantially discharged, each test connection of dismantling removes all safety measures.
Further, in the step 2, high-potting instrument includes no partial discharge frequency conversion power supply, without partial discharge excitation transformation
Device, without partial discharge capacitive divider, without partial discharge compensation reactor, between connected by extra-high voltage experiment lead, the extra-high voltage
Test lead is BVVBGYX-150KV high-potting cable.
Further, the concrete operation step of the step 3 are as follows: (1), test casing installation；
(2), main transformer and the result of main transformer oil routine test meet commissioning test standard requirements；
(3), sub-connecting switch of transformer is transferred to 9B grades；
(4), the second short circuit ground connection of the casing current transformer of transformer；
(5), by the scaffold and eliminating impurities around transformer；
(6), all electrical equipments in scene stop electricity consumption；
(7), subject becomes ontology, iron core and folder and surrounding frame is connect with earth mat；
(8), all live non-test personnel are emptied；
(9), experiment power supply is without other loads；
(10), transformer and other equipment it is completely isolated and carry out Insulation Test qualification.
Further, in the step 4, test voltage waveform is as close possible to sine, the step of applying voltage are as follows:
(1), power under the voltage no more than U2/3；
(2), voltage rises to 1.1Um/ √ 3, keeps 5min, and wherein Um is the virtual value that equipment highest runs line voltage；
(3), voltage rises to U2, keeps 5min；
(4), voltage rises to U1, certain time；
(5), voltage is dropped into U2 incessantly at once after U1 to stipulated time, and at least keep 60 min (for Um >=
300kV) or 30min(is for Um < 300kV), to measure shelf depreciation；
(6), voltage drop keeps 5min as low as 1.1Um/ √ 3；
(7), it when voltage drop is as low as U2/3 or less, can cut off the power；
Above to apply in voltage steps, in addition to the duration of U1, remaining duration of test runs is unrelated with test frequency；It is right
Ground voltage value is answered are as follows: U1=1.7Um/ √ 3, U2=1.5Um/ √ 3 or 1.3Um/ √ 3；Test voltage value is measurement voltage
Peak value is divided by √ 2.
Further, in the step (4), the duration is implemented by following standard:
The frequency for applying AC voltage test voltage outside is 45~65HZ, and tolerance time is 60s under full voltage；
When induced voltage test, to prevent iron core saturation and exciting current excessive, the frequency of test voltage should be suitably larger than specified
Frequency；
When test voltage frequency is equal to or less than 2 times of rated frequencies, test period is 60s under full voltage；
When test voltage frequency is greater than 2 times of rated frequencies, test period under full voltage are as follows: 120 × rated frequency/test frequency
Rate (second), but no less than 15 seconds.
Further, in the step 4, when test, should monitor in high-voltage end, measurement of partial discharge according to the following steps into
Row:
(1), in the entire period for applying test voltage, partial discharge quantity is monitored in real time；
(2), before and after applying test voltage, the background noise level on all Measurement channels is measured；
(3), during voltage rises to U2 and is declined by U2, record the partial discharge inception voltage that is likely to occur and
Extinction voltage measures local placing TV in the quantity of electric charge at 1.1Um/ √ 3；
(4), it is read in the first stage of voltage U2 and records a reading, its apparent charge amount is not provided to the stage
Value；
(5), it does not require to provide apparent charge magnitude during applying U1；
(6), in the entire period of the second stage of voltage U2, local discharging level is observed continuously, and remembers every 5min
Record is primary.
Further, in the step 4, induced voltage and measurement of partial discharge pass the test relevant criterion when long are as follows:
(1), test voltage does not generate and declines suddenly；
(2), when long at 2=1.5Um/ of U √ 3 or 1.3Um/ √ 3 during test, the continuous horizontal of partial discharge quantity
No more than 500pC or 300 pC；
(3), at U2, the trend continued to increase is not presented in partial discharge electric discharge, and the pulse of the higher magnitude accidentally occurred can be disregarded
Enter；
(4), at 1.1Um/ √ 3, the continuous horizontal of apparent charge amount is not more than 100pC.
The beneficial effects of the present invention are:
1, test loop of the present invention is in resonant state, and circuit itself has good filter action, humorous in power supply wave shape
Wave component greatly reduces at equipment both ends, to export good sinusoidal waveform, when test product discharges or punctures, i.e., circuit is medium
Value capacitor is short-circuited, and condition of resonance is destroyed, and voltage is decreased obviously, and is restored voltage and is risen slowly, transient state mistake does not occur on test product
Voltage, and the short circuit current of power supply is limited by reactance and is reduced, to limit the damaged condition of tested device.
2, the present invention requires site environment using BVVBGYX-150KV high-potting cable low, uses high-potting electricity
Cable can effectively reduce interference of the external environment to test, keep test data more accurate compared with previous test method, have
The dielectric level of the detection transformer of effect, it is more convenient to test, and greatly shortens test period.
3, the present invention is good using the equivalence of no partial discharge frequency conversion power supply HVFP -450kW test.Device output is sine wave,
Waveform distortion is small, during the test, does not need measurement peak value.
4, moving The present invention reduces the dismounting of shelf and equipment, when saving required for operating expenses and construction
Between, while shortening test time and working time.
Detailed description of the invention:
Fig. 1 is the wiring diagram of the application.
Fig. 2 is the pressurization protocols figure of the application.
Specific embodiment:
Embodiment: referring to Fig. 1 and Fig. 2, in Fig. 1 T- without partial discharge exciting transformer, cf- without partial discharge capacitive divider, L1 and L2- without
Partial discharge compensation reactor, Tx subject transformer, MI1 and MI2- detect impedance；In Fig. 2, A=5min；B=5min；C=test period；
D >=60min (for Um >=300KV) or 30min (for Um < 300KV), this project test is 220kV transformer partial discharge, is answered
Select D >=30min；E=5min powers under the voltage no more than U2/3.
The present invention is suitable for the inducting-voltage proof local discharge test of the power transformer of 110kV grade or more, wherein embodiment
Application is that middle electricity throws great Feng H3#300MW marine wind electric field #1 main transformer project (220kV offshore boosting station), concrete operations side
Method are as follows: Step 1: setting up scaffold and frame plate according to the structure in main transformer room；
Step 2: high-potting instrument is placed on zero meter, and upper main transformer pressurization place is drawn from zero meter by extra-high voltage experiment lead；
Step 3: the tool and equipment to experiment needs are prepared and overhaul, and check according to respective standard and guarantee peace
Full distance；
Step 4: sine wave is exported using no partial discharge frequency conversion power supply, it is successively right according to pressurization steps by symmetrical pressuring method
A, B, C three-phase carry out ac voltage withstanding test, measure corresponding insulation resistance and compare with relevant criterion, obtain test knot
Fruit；
Step 5: test finishes after being substantially discharged, each test connection of dismantling removes all safety measures.
Further, in step 2, high-potting instrument includes no partial discharge frequency conversion power supply, without partial discharge exciting transformer, nothing
Partial discharge capacitive divider, without partial discharge compensation reactor, between connected by extra-high voltage experiment lead, the extra-high voltage experiment draws
Line is BVVBGYX-150KV high-potting cable.
Further, the concrete operation step of step 3 are as follows: (1), test casing is installed；
(2), main transformer oil level is normal, and quiet to put the time be more than 48 hours, and is deflated, and the result of routine test (including oil test) meets
Commissioning test standard requirements；
(3), sub-connecting switch of transformer is transferred to 9B grades before test；And it is transformer and other equipment is completely isolated, all exhausted
It just can be carried out test after edge pass the test；
(4), the secondary of the casing current transformer of transformer answers short circuit grounding；
(5), the scaffold and eliminating impurities around transformer, the electrical equipments such as all electric welding in scene and sanding machine stop using
Electricity.Subject, which becomes ontology, iron core and folder and surrounding frame, to be reliably connected with earth mat.Empty all live non-test personnel；
(6), it sends someone to monitor equipment, observes the generation of abnormal conditions at any time, it is ensured that test is safely and smoothly carried out and mentioned
For producer's test report；
(7), one, the transformer of capacity 450kVA or more (low pressure 400V) is used as power supply, without other loads.
Further, in step 4, test voltage waveform is as close possible to sine, the step of applying voltage are as follows:
(1), power under the voltage no more than U2/3；
(2), voltage rises to 1.1Um/ √ 3, keeps 5min, and wherein Um is the virtual value that equipment highest runs line voltage；
(3), voltage rises to U2, keeps 5min；
(4), voltage rises to U1, certain time；
(5), voltage is dropped into U2 incessantly at once after U1 to stipulated time, and at least keep 60 min (for Um >=
300kV) or 30min(is for Um < 300kV), to measure shelf depreciation；
(6), voltage drop keeps 5min as low as 1.1Um/ √ 3；
(7), it when voltage drop is as low as U2/3 or less, can cut off the power；
Above to apply in voltage steps, in addition to the duration of U1, remaining duration of test runs is unrelated with test frequency；It is right
Ground voltage value is answered are as follows: U1=1.7Um/ √ 3, U2=1.5Um/ √ 3 or 1.3Um/ √ 3；Test voltage value is measurement voltage
Peak value is divided by √ 2.
Further, in step (4), the duration is implemented by following standard:
The frequency for applying AC voltage test voltage outside is 45~65HZ, and tolerance time is 60s under full voltage；
When induced voltage test, to prevent iron core saturation and exciting current excessive, the frequency of test voltage should be suitably larger than specified
Frequency；
When test voltage frequency is equal to or less than 2 times of rated frequencies, test period is 60s under full voltage；
When test voltage frequency is greater than 2 times of rated frequencies, test period under full voltage are as follows: 120 × rated frequency/test frequency
Rate (second), but no less than 15 seconds.
Further, in step 4, when test, should monitor in high-voltage end, and measurement of partial discharge follows the steps below:
(1), in the entire period for applying test voltage, partial discharge quantity is monitored in real time；
(2), before and after applying test voltage, the background noise level on all Measurement channels is measured；
(3), during voltage rises to U2 and is declined by U2, record the partial discharge inception voltage that is likely to occur and
Extinction voltage measures local placing TV in the quantity of electric charge at 1.1Um/ √ 3；
(4), it is read in the first stage of voltage U2 and records a reading, its apparent charge amount is not provided to the stage
Value；
(5), it does not require to provide apparent charge magnitude during applying U1；
(6), in the entire period of the second stage of voltage U2, local discharging level is observed continuously, and remembers every 5min
Record is primary.
Further, in step 4, induced voltage and measurement of partial discharge pass the test relevant criterion when long are as follows:
(1), test voltage does not generate and declines suddenly；
(2), when long at 2=1.5Um/ of U √ 3 or 1.3Um/ √ 3 during test, the continuous horizontal of partial discharge quantity
No more than 500pC or 300 pC；
(3), at U2, the trend continued to increase is not presented in partial discharge electric discharge, and the pulse of the higher magnitude accidentally occurred can be disregarded
Enter；
(4), at 1.1Um/ √ 3, the continuous horizontal of apparent charge amount is not more than 100pC.
During aforesaid operations, corresponding safety measure and environmental protection measure should be also incorporated, in which:
Safety measure is (1), carries out relevant preparation before test, and one-to-one strict safety religion is realized in safety education work
It educates；
(2), fence is set around testing equipment and has special messenger's monitoring, is responsible for personnel the case where paying attention to surrounding at any time of test,
Once power supply should be turned off by, which noting abnormalities, stops test, can continue to test after ascertaining the reason and excluding；
(3), ensure to be contacted by testing equipment and other equipment onrelevant before measuring, the place for needing to disconnect there should be obvious disconnection
Point；It should be substantially discharged before electrical equipment biggish for capacity such as transformer test, prevent residual charge to testing crew
Injury；
(4), notice that the electrical equipment especially equipment containing winding finished to test must be substantially discharged.Ground line should securely may be used
It leans on；
(5), pay attention to increasing mutual inductor secondary connection reliable ground on seat in doing the test preparation before partial discharge.Forbid electric current
Mutual inductor opens a way or loses grounding point, prevents accidental discharge from causing equipment damage；
(6), the pertinent regulations of electrical safe working order are strictly observed.Staff and live part should keep safe distance；
Staff should stick to post, and must not arbitrarily walk about in trial zone；
(7), the test equipment such as threephase cable and automatic air-break switch, should be checked or be tested before test；
(8), entire applied voltage test process someone should be guarded and be exhaled and sing always, observe the generation of abnormal conditions at any time, it is ensured that test
Safely and smoothly carry out.
Environmental protection measure (reinforce test area environmental sanitation to administer, prevent the media such as vapour, oil according to construction environmental protection standard
Pollution on the environment accomplishes " work is complete, material is net, place is clear ").
Operating process is not described in the application according to (1), " electric device installing engineering electrical equipment commissioning test mark
It is quasi- " GB50150-2016；
(2), " electric power safety working regulation (power plant and electric substation's electric part) " GB26860-2011；
(3), " the 3rd part of power transformer: dielectric level, Insulation Test and external insulation air gap " GB1094.3-2003；
(4), " measurement of partial discharge " GB7354-2016；
(5), " power equipment shelf depreciation in-site measurement directive/guide " DL417-2006T；
(6), the technical data, operation instructions of equipment manufacturer.
Instrument, instrument, material used in the above operation are as follows: no partial discharge frequency conversion power supply (HVFP -450kW), without partial discharge
Exciting transformer (ZB-450kVA/2 × 5/25/60kV), three taps are without partial discharge compensation reactor (HVFR-420kVA/
35kV35kV/ (12A/3H), oil-immersed and high-voltage reactor (HVDK-1250kVA/250kV250kV/5A/200H/60min), nothing
Partial discharge capacitive divider (HV-300pF/80kV), capacitive divider (HV-1000pF/750kV), the equal pressure cap (220kV/ of transformer
3), digital partial discharge instrument (digital 2 channel XD5012).
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, it is all
It is any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention, still falls within
In the range of technical solution of the present invention.
Claims (7)
1. a kind of offshore boosting station transformer pressure resistance local discharge test method, the steps include: Step 1: being taken according to the structure in main transformer room
If scaffold and frame plate；
Step 2: high-potting instrument is placed on zero meter, and upper main transformer pressurization place is drawn from zero meter by extra-high voltage experiment lead；
Step 3: the tool and equipment to experiment needs are prepared and overhaul, and check according to respective standard and guarantee peace
Full distance；
Step 4: sine wave is exported using no partial discharge frequency conversion power supply, it is successively right according to pressurization steps by symmetrical pressuring method
A, B, C three-phase carry out ac voltage withstanding test, measure corresponding insulation resistance and compare with relevant criterion, obtain test knot
Fruit；
Step 5: test finishes after being substantially discharged, each test connection of dismantling removes all safety measures.
2. offshore boosting station transformer pressure resistance local discharge test method according to claim 1, it is characterized in that: the step 2
In, high-potting instrument include no partial discharge frequency conversion power supply, without partial discharge exciting transformer, without partial discharge capacitive divider, without partial discharge mend
Repay reactor, between connected by extra-high voltage experiment lead, the extra-high voltage experiment lead be BVVBGYX-150KV high pressure examination
Electrical verification cable.
3. offshore boosting station transformer pressure resistance local discharge test method according to claim 1, it is characterized in that: the step 3
Concrete operation step are as follows: (1), test casing installation；
(2), main transformer and the result of main transformer oil routine test meet commissioning test standard requirements；
(3), sub-connecting switch of transformer is transferred to 9B grades；
(4), the second short circuit ground connection of the casing current transformer of transformer；
(5), by the scaffold and eliminating impurities around transformer；
(6), all electrical equipments in scene stop electricity consumption；
(7), subject becomes ontology, iron core and folder and surrounding frame is connect with earth mat；
(8), all live non-test personnel are emptied；
(9), experiment power supply is without other loads；
(10), transformer and other equipment it is completely isolated and carry out Insulation Test qualification.
4. offshore boosting station transformer pressure resistance local discharge test method according to claim 1, it is characterized in that: the step 4
In, test voltage waveform is as close possible to sine, the step of applying voltage are as follows:
(1), power under the voltage no more than U2/3；
(2), voltage rises to 1.1Um/ √ 3, keeps 5min, and wherein Um is the virtual value that equipment highest runs line voltage；
(3), voltage rises to U2, keeps 5min；
(4), voltage rises to U1, certain time；
(5), voltage is dropped into U2 incessantly at once after U1 to stipulated time, and at least keep 60 min (for Um >=
300kV) or 30min(is for Um < 300kV), to measure shelf depreciation；
(6), voltage drop keeps 5min as low as 1.1Um/ √ 3；
(7), it when voltage drop is as low as U2/3 or less, can cut off the power；
Above to apply in voltage steps, in addition to the duration of U1, remaining duration of test runs is unrelated with test frequency；It is right
Ground voltage value is answered are as follows: U1=1.7Um/ √ 3, U2=1.5Um/ √ 3 or 1.3Um/ √ 3；Test voltage value is measurement voltage
Peak value is divided by √ 2.
5. offshore boosting station transformer pressure resistance local discharge test method according to claim 4, it is characterized in that: the step
(4) in, the duration is implemented by following standard:
The frequency for applying AC voltage test voltage outside is 45~65HZ, and tolerance time is 60s under full voltage；
When induced voltage test, to prevent iron core saturation and exciting current excessive, the frequency of test voltage should be suitably larger than specified
Frequency；
When test voltage frequency is equal to or less than 2 times of rated frequencies, test period is 60s under full voltage；
When test voltage frequency is greater than 2 times of rated frequencies, test period under full voltage are as follows: 120 × rated frequency/test frequency
Rate (second), but no less than 15 seconds.
6. offshore boosting station transformer pressure resistance local discharge test method according to claim 1, it is characterized in that: the step 4
In, when test, should monitor in high-voltage end, and measurement of partial discharge follows the steps below:
(1), in the entire period for applying test voltage, partial discharge quantity is monitored in real time；
(2), before and after applying test voltage, the background noise level on all Measurement channels is measured；
(3), during voltage rises to U2 and is declined by U2, record the partial discharge inception voltage that is likely to occur and
Extinction voltage measures local placing TV in the quantity of electric charge at 1.1Um/ √ 3；
(4), it is read in the first stage of voltage U2 and records a reading, its apparent charge amount is not provided to the stage
Value；
(5), it does not require to provide apparent charge magnitude during applying U1；
(6), in the entire period of the second stage of voltage U2, local discharging level is observed continuously, and remembers every 5min
Record is primary.
7. offshore boosting station transformer pressure resistance local discharge test method according to claim 1, it is characterized in that: the step 4
In, induced voltage and measurement of partial discharge pass the test relevant criterion when long are as follows:
(1), test voltage does not generate and declines suddenly；
(2), when long at 2=1.5Um/ of U √ 3 or 1.3Um/ √ 3 during test, the continuous horizontal of partial discharge quantity
No more than 500pC or 300 pC；
(3), at U2, the trend continued to increase is not presented in partial discharge electric discharge, and the pulse of the higher magnitude accidentally occurred can be disregarded
Enter；
(4), at 1.1Um/ √ 3, the continuous horizontal of apparent charge amount is not more than 100pC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910543238.1A CN110208661A (en) | 2019-06-21 | 2019-06-21 | Offshore boosting station transformer pressure resistance local discharge test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910543238.1A CN110208661A (en) | 2019-06-21 | 2019-06-21 | Offshore boosting station transformer pressure resistance local discharge test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110208661A true CN110208661A (en) | 2019-09-06 |
Family
ID=67793974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910543238.1A Pending CN110208661A (en) | 2019-06-21 | 2019-06-21 | Offshore boosting station transformer pressure resistance local discharge test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110208661A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672997A (en) * | 2019-10-12 | 2020-01-10 | 中国电建集团河南工程有限公司 | Transformer induction voltage-withstanding partial discharge test method |
| CN111610419A (en) * | 2020-06-02 | 2020-09-01 | 西安热工研究院有限公司 | Method for carrying out long-distance submarine cable voltage withstand test by utilizing reactive compensation reactor |
| CN111751682A (en) * | 2020-06-24 | 2020-10-09 | 国网黑龙江省电力有限公司电力科学研究院 | Pressurization method for on-site partial discharge measurement of overhauled transformer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854444A (en) * | 2012-09-11 | 2013-01-02 | 青海电力科学试验研究院 | Local discharge testing method for +/- 400kV converter transformer |
| JP2013142673A (en) * | 2012-01-12 | 2013-07-22 | Mitsubishi Cable Ind Ltd | Partial discharge measuring device, partial discharge measuring method, and partial discharge measurement program |
| CN104181445A (en) * | 2014-08-12 | 2014-12-03 | 云南电力试验研究院（集团）有限公司电力研究院 | Converter transformer double side voltage applying partial discharge testing device and testing method thereof |
| CN104714158A (en) * | 2015-03-11 | 2015-06-17 | 国家电网公司 | Alternating-current ultrahigh voltage main transformer and regulation transformer combined partial discharge testing system and method |
| CN205608139U (en) * | 2016-04-13 | 2016-09-28 | 云南电网有限责任公司电力科学研究院 | Change of current becomes partial discharge test device |
-
2019
- 2019-06-21 CN CN201910543238.1A patent/CN110208661A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013142673A (en) * | 2012-01-12 | 2013-07-22 | Mitsubishi Cable Ind Ltd | Partial discharge measuring device, partial discharge measuring method, and partial discharge measurement program |
| CN102854444A (en) * | 2012-09-11 | 2013-01-02 | 青海电力科学试验研究院 | Local discharge testing method for +/- 400kV converter transformer |
| CN104181445A (en) * | 2014-08-12 | 2014-12-03 | 云南电力试验研究院（集团）有限公司电力研究院 | Converter transformer double side voltage applying partial discharge testing device and testing method thereof |
| CN104714158A (en) * | 2015-03-11 | 2015-06-17 | 国家电网公司 | Alternating-current ultrahigh voltage main transformer and regulation transformer combined partial discharge testing system and method |
| CN205608139U (en) * | 2016-04-13 | 2016-09-28 | 云南电网有限责任公司电力科学研究院 | Change of current becomes partial discharge test device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672997A (en) * | 2019-10-12 | 2020-01-10 | 中国电建集团河南工程有限公司 | Transformer induction voltage-withstanding partial discharge test method |
| CN111610419A (en) * | 2020-06-02 | 2020-09-01 | 西安热工研究院有限公司 | Method for carrying out long-distance submarine cable voltage withstand test by utilizing reactive compensation reactor |
| CN111610419B (en) * | 2020-06-02 | 2022-08-02 | 西安热工研究院有限公司 | Method for carrying out long-distance submarine cable voltage withstand test by utilizing reactive compensation reactor |
| CN111751682A (en) * | 2020-06-24 | 2020-10-09 | 国网黑龙江省电力有限公司电力科学研究院 | Pressurization method for on-site partial discharge measurement of overhauled transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105974290B (en) | A kind of dry-type air-core reactor turn-to-turn insulation performance detecting system and method | |
| CN110208661A (en) | Offshore boosting station transformer pressure resistance local discharge test method | |
| EP2680017A1 (en) | A method of early detection of feeder lines with a high-ohm ground fault in compensated power networks | |
| CN105259489B (en) | Extra-high voltage neutral reactor scene induced over voltage withstand test system and method | |
| CN102565618A (en) | Method for detecting zero-sequence voltage circuit of transformer substation | |
| CN110456236A (en) | Railway traction transformer shelf depreciation handover property test method | |
| WO2012000510A1 (en) | Method and system for monitoring structural health of a filter in a wind turbine, and a wind turbine | |
| CN107884645A (en) | Based on voltage ratio compared with power capacitor method for monitoring operation states | |
| CN207067321U (en) | High altitude localities 750kV shunt reactor Partial Discharge Testing on Site devices | |
| CN206945842U (en) | A kind of distribution reactive power compensator analogue test platform | |
| CN107436399A (en) | High altitude localities 750kV shunt reactor local discharge test devices | |
| CN105717381A (en) | Identification method of extra-high voltage converter transformer field modular assembly | |
| CN108181513B (en) | Inter-phase coupling capacitance testing method and system for lightning arrester based on pilot frequency method | |
| CN110672997A (en) | Transformer induction voltage-withstanding partial discharge test method | |
| CN107728020B (en) | High-voltage capacitive equipment defect rapid diagnosis system | |
| CN102565614A (en) | Alternating voltage loop test method | |
| CN205844468U (en) | Dry-type air-core reactor turn-to-turn insulation performance test system | |
| CN107015084A (en) | A kind of distribution reactive power compensator analogue test platform | |
| CN216526134U (en) | Device for checking fault of discharge coil of parallel capacitor bank | |
| Wan et al. | Fault Detection Technology and Analysis of 10 kV XLPE Power Cable | |
| CN113156240A (en) | Transformer substation electrical equipment debugging method | |
| Liu et al. | Transformer winding deformation detection analysis and typical cases | |
| CN205157720U (en) | Withstand voltage test system is answered to extra -high voltage neutral point reactor telepresence | |
| CN114167228A (en) | Device for checking fault of discharge coil of parallel capacitor bank | |
| CN109375078A (en) | It is a kind of for detecting the system and method for dry-type reactor interturn insulation |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 450051 2 North Street, Zhongyuan District, Zhengzhou, Henan Applicant after: POWER CHINA HENAN ENGINEERING Co.,Ltd. Address before: 450051 No. 2 North Street, West Station, Zhongyuan District, Xuchang City, Henan Province Applicant before: POWER CHINA HENAN ENGINEERING Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190906 |