CN107144758A - The test method that a kind of fuel factor influences on transformer anti-short circuit capability - Google Patents
The test method that a kind of fuel factor influences on transformer anti-short circuit capability Download PDFInfo
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- CN107144758A CN107144758A CN201710377736.4A CN201710377736A CN107144758A CN 107144758 A CN107144758 A CN 107144758A CN 201710377736 A CN201710377736 A CN 201710377736A CN 107144758 A CN107144758 A CN 107144758A
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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
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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
- G01R31/003—Environmental or reliability tests
-
- 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)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses the test method that a kind of fuel factor influences on transformer anti-short circuit capability, including：Total losses, low pressure terminal shortcircuit are applied to step-up side to be measured, wherein, the total losses are the open circuit loss and load loss sum of transformer to be measured；Test the oil temperature of the transformer to be measured；If the oil temperature of the transformer to be measured is stable, the high-pressure side of the transformer to be measured is stopped applying total losses；Short-circuit test is carried out to the transformer to be measured after heating, the maximum short circuit current I1 of the transformer to be measured after measurement heating；The transformer to be measured is down to environment temperature, the maximum short circuit current I2 of the transformer to be measured at a temperature of short-circuit test, measuring environment is carried out to the transformer to be measured for being down to environment temperature；The I1 and I2 is contrasted, influence of the fuel factor to the transformer anti-short circuit capability to be measured is obtained.This test method is applied to any type of transformer, and test result is accurate, simple to operation.
Description
Technical field
The present invention relates to transformer short-circuit experimental technique field, more particularly to a kind of fuel factor is to transformer anti-short circuit capability
The test method of influence.
Background technology
Transformer is one of highly important equipment in power system, and its operation conditions not only influences the peace of itself
Entirely, and the stability and reliability of whole Operation of Electric Systems are affected.Power network often due to thunderbolt, protective relaying maloperation or
Tripping etc. causes short circuit, and the strong impact of short circuit current flow may be damaged transformer, accordingly, it would be desirable to be become by short-circuit test research
The anti-short circuit capability of depressor.
Current transformer short-circuit experiment is directly to apply certain electricity on the transformer according to GB1094.5-2008 standards
Pressure tested, the maximum short circuit current of measuring transformer, maximum short circuit current it is bigger, the anti-short circuit capability of transformer is got over
By force.
But, transformer in actual moving process because with certain load, there is fuel factor in Transformer Winding, when
Transformer adstante febre, its anti-short circuit capability will change, and above-mentioned short-circuit test is not consider the situation of transformer fuel factor
Lower progress, cause the maximum short circuit current of test inaccurate.Therefore, it is necessary to study fuel factor to transformer anti-short circuit capability
Influence.
The content of the invention
The invention provides the test method that a kind of fuel factor influences on transformer anti-short circuit capability, methods described includes：
Total losses, low pressure terminal shortcircuit are applied to step-up side to be measured, wherein, the total losses are transformer to be measured
Open circuit loss and load loss sum；
Test the oil temperature of the transformer to be measured；
If the oil temperature of the transformer to be measured is stable, the high-pressure side of the transformer to be measured is stopped applying total losses；
Short-circuit test is carried out to the transformer to be measured after heating, the transformer to be measured is maximum short after measurement heating
Road electric current I1；
The transformer to be measured is down to environment temperature, short-circuit examination is carried out to the transformer to be measured for being down to environment temperature
Test, the maximum short circuit current I2 of the transformer to be measured at a temperature of measuring environment；
The I1 and I2 is contrasted, influence of the fuel factor to the transformer anti-short circuit capability to be measured is obtained.
Preferably, the oil temperature of the transformer to be measured is stable includes：
Calculate the oil temperature change of transformer to be measured each hour；
When continuous three small, the oil temperature change is respectively less than 1K, then the oil temperature of the transformer to be measured is stable.
Preferably, the transformer to be measured after described pair of heating carries out short-circuit test, the change to be measured after measurement heating
The maximum short circuit current I1 of depressor, including：
Any phase to the transformer to be measured after heating carries out short-circuit test, obtains the transformer to be measured after heating
Maximum short circuit current I1.
Preferably, it is down at a temperature of the transformer to be measured of environment temperature carries out short-circuit test, measuring environment for described pair
The maximum short circuit current I2 of the transformer to be measured, including：
Any phase of the transformer to be measured to being down under environment temperature carries out short-circuit test, obtains institute under environment temperature
State the maximum short circuit current I2 of transformer to be measured.
Preferably, it is described that the step-up side application total losses to be measured, low pressure terminal shortcircuit are included：
The total losses are obtained by the pressure regulator and power meter of generator, and the total losses are applied to described to be measured
The high-pressure side of transformer, by any phase short circuit of the low-pressure end.
The technical scheme that the present invention is provided can include the following benefits：
The test method that fuel factor provided in an embodiment of the present invention influences on transformer anti-short circuit capability, including：To be measured
Step-up side applies total losses, low pressure terminal shortcircuit, wherein, open circuit loss and load of the total losses for transformer to be measured
Sum is lost；Test the oil temperature of the transformer to be measured；If the oil temperature of the transformer to be measured is stable, to the transformation to be measured
The high-pressure side of device stops applying total losses；Short-circuit test is carried out to the transformer to be measured after heating, it is described after measurement heating
The maximum short circuit current I1 of transformer to be measured；The transformer to be measured is down to environment temperature, to being down to described in environment temperature
Transformer to be measured carries out the maximum short circuit current I2 of the transformer to be measured at a temperature of short-circuit test, measuring environment；Contrast is described
I1 and I2, obtains influence of the fuel factor to the transformer anti-short circuit capability to be measured.Fuel factor pair provided in an embodiment of the present invention
The test method of transformer anti-short circuit capability influence, it is adaptable to any type of transformer, by step-up side to be measured
Apply total losses, low pressure terminal shortcircuit, simulate transformer actual operating mode to be measured, the short circuit of the transformer to be measured after measurement heating
The maximum short circuit current of transformer to be measured under electric current and environment temperature, thermal effect is obtained according to the contrast of the two maximum short circuit currents
Tackle the influence of transformer anti-short circuit capability.This method test result is accurate, simple to operation.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
Can the limitation present invention.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, letter will be made to the required accompanying drawing used in embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of transformer device for testing temperature rise provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of transformer short-circuit current testing device provided in an embodiment of the present invention；
Fig. 3 is the stream for the test method that a kind of fuel factor provided in an embodiment of the present invention influences on transformer anti-short circuit capability
Journey schematic diagram.
Embodiment
The test method that fuel factor provided in an embodiment of the present invention influences on transformer anti-short circuit capability, based on fuel factor pair
The influence pilot system of transformer anti-short circuit capability realizes, influence pilot system bag of the fuel factor to transformer anti-short circuit capability
Include transformer device for testing temperature rise and transformer short-circuit current testing device.In specific implementation process, as shown in figure 1, shown
Transformer device for testing temperature rise includes anaplasia in the first generator G1, the first intermediate transformer D1, the first generator G1 and first
Depressor D1 low-pressure end electrical connection, the first intermediate transformer D1 high-pressure side and the high-pressure side of any phases of transformer Y to be measured are electrically connected
Connect, the low pressure terminal shortcircuit connection of a corresponding phase in transformer Y to be measured.In specific implementation process, the first intermediate transformer
D1 high-pressure side is electrically connected with transformer Y to be measured A phase high-pressure sides, transformer Y to be measured A phase low pressure terminal shortcircuit connection.
Certainly, in specific implementation process, the B phases that the first intermediate transformer D1 high-pressure side can be with transformer Y to be measured
High-pressure side is electrically connected, transformer Y to be measured B phase low pressure terminal shortcircuit connection；Or, the first intermediate transformer D1 high-pressure side can be with
Electrically connected with transformer Y to be measured C phase high-pressure sides, transformer Y to be measured C phase low pressure terminal shortcircuit connection.
The total losses that the first generator G1 is transformer Y to be measured to the power that transformer Y to be measured applies are adjusted for convenience,
The high-pressure side also access power table of the transformer Y to be measured, the first generator G1 is also connected with pressure regulator.Power meter is used to show
First generator G1 gives the power that transformer Y to be measured applies, and pressure regulator is used to adjust the power supply size that the first generator G1 is sent,
User can make the total losses that generator is transformer Y to be measured to the power that transformer Y to be measured applies by adjusting pressure regulator, its
In, transformer Y to be measured total losses are the open circuit loss and load loss sum of transformer to be measured.
In addition, the transformer device for testing temperature rise also includes temperature measuring device, the temperature measuring device is used to test change to be measured
Depressor Y oil temperature.
In embodiments of the present invention, the first intermediate transformer D1 is used to be risen the voltage that the first generator G1 is exported
Pressure.
In order to compensate transformer Y to be measured inductive reactive power, the first intermediate transformer D1 high-pressure side also passes through a compensation electricity
Container C is grounded, and in specific implementation process, the first intermediate transformer D1 high-pressure side is electrically connected with compensation capacitor C one end,
Compensation capacitor C other end ground connection.In embodiments of the present invention, compensation capacitor C can use rated voltage for 11kV, volume
Constant volume is 3 × 334kvar capacitor, and compensation capacitor C can be a capacitor or the string of multiple capacitors
Connection.
Transformer short-circuit testing current can use regulation in GB1094.5 to arrive short circuit current flow method of testing, transformer short-circuit
Current testing device specifically can be with as shown in Fig. 2 including the second generator G2, first voltage transformer P1, second voltage mutual inductance
Device P2, tertiary voltage transformer P3, reactor L, the first breaker K1, the second breaker K2, the 3rd breaker K3, Current Mutual Inductance
Device A and the second intermediate transformer D2.
Wherein, first voltage transformer P1 two ends, the first breaker K1 two inputs respectively with the second generator
G2 two output ends electrical connection；Reactor L two ends are electrically connected with the first breaker K1 two output ends respectively；Second breaks
Road device K2 two inputs are electrically connected with the first breaker K1 two output ends respectively, two output ends respectively with second
Between transformer D2 low-pressure end electrical connection, the two of the second intermediate transformer D2 high-pressure side electrical connection second voltage transformer P2
End；High-pressure side of 3rd breaker K3 two inputs also with the second intermediate transformer D2 is electrically connected, one of output end
Electrically connected by current transformer A with tertiary voltage transformer P3 one end, another output end is directly mutual with tertiary voltage
Sensor P3 other end electrical connection；Transformer Y to be measured high-pressure side electrically connects with tertiary voltage transformer P3 two ends respectively, low
Pressure side short circuit.First voltage transformer P1 is used for the voltage for measuring the second generator G2 outputs；Second voltage transformer P2 is used for
Measure the voltage after being boosted through the second intermediate transformer D2；It is high that tertiary voltage transformer P3 is added to transformer Y to be measured for measurement
The virtual voltage of pressure side.
In specific implementation process, the first generator G1 and the second generator G2 can use same generator, first
Intermediate transformer D1 and the second intermediate transformer D2 can use same intermediate transformer, be not specifically limited herein.
The embodiment of the present invention provides the test method that a kind of fuel factor influences on transformer anti-short circuit capability, it is adaptable to any
The transformer of type, as shown in figure 3, methods described includes：
Step S100：Total losses, low pressure terminal shortcircuit are applied to step-up side to be measured.
Wherein, the total losses are the open circuit loss and load loss sum of transformer to be measured.In specific implementation process,
Temperature rise test can be tested using transformer device for testing temperature rise as shown in Figure 1.
In order to simulate transformer actual operating mode to be measured, total losses, low are applied in the high-pressure side of the transformer to be measured
Pressure side short circuit, makes transformer to be measured heat up.
In specific implementation process, applying total losses, low pressure terminal shortcircuit to the step-up side to be measured includes：
The total losses are obtained by the pressure regulator and power meter of the first generator, and the total losses are applied to described
The high-pressure side of transformer to be measured, by any phase short circuit of the low-pressure end.
The output voltage of first generator is boosted through the first intermediate transformer, and the high pressure risen through the first intermediate transformer is added to
The two ends of step-up side to be measured, the power for being added to step-up side to be measured is surveyed by power meter, passes through the first generator
Pressure regulator adjust generator output voltage, to power meter registration be transformer to be measured total losses when, stop pressure regulation.
Step S200：Test the oil temperature of the transformer to be measured.
By the oil temperature of transformer to be measured described in temperature measuring device real-time testing, in specific implementation process, the change to be measured
The oil temperature of depressor can be transformer Y to be measured top-oil temperature.
Step S300：If the oil temperature of the transformer to be measured is stable, the high-pressure side of the transformer to be measured is stopped applying
Add up loss.
In a kind of possible embodiment, the oil temperature of the transformer to be measured is stable to be included：
Step S301：Calculate the oil temperature change of transformer to be measured each hour.
According to the oil temperature of the transformer to be measured measured in real time, the oil temperature change of each hour is calculated.
Step S302：When continuous three small, oil temperature change is respectively less than 1K, then the oil temperature of the transformer to be measured
It is stable.
When the temperature of oil in transformer to be measured is stable, the high-pressure side of the transformer to be measured is stopped applying total losses.
In specific implementation process, the first generator, the connection of the high-pressure side and intermediate transformer of transformer to be measured of dismantling are closed.
Step S400：Short-circuit test, the transformation to be measured after measurement heating are carried out to the transformer to be measured after heating
The maximum short circuit current I1 of device.
In embodiments of the present invention, the high-pressure side of the transformer to be measured is stopped applying after total losses, carried out rapidly short
The examination of road is tested, and measures the short circuit current flow of the transformer to be measured.The high-pressure side of the transformer to be measured is stopped applying after total losses,
Circuit is assembled according to transformer short-circuit current testing device as shown in Figure 2, is provided according to GB1094.5-2008 standards, to institute
State transformer to be measured and carry out short-circuit test, the maximum short circuit current I1 of transformer to be measured after measurement heating, wherein, after the heating
The maximum short circuit current that the maximum short circuit current of transformer to be measured can bear for the transformer to be measured after heating.
In a kind of possible embodiment, step S400 embodiment, including：
Any phase to the transformer to be measured after heating carries out short-circuit test, obtains the transformer to be measured after heating
Maximum short circuit current I1.
In specific implementation process, the first breaker K1 of closure, the second breaker K2, the 3rd breaker K3 can be by the
Two generator G2 pressure regulator adjusts the voltage of the second generator G2 outputs, short-circuit test is carried out to transformer to be measured, when to be measured
The short-circuit impedance of transformer exceedes to the timing of GB1094.5-2008 standard gauges, and described after heating treat is read from current transformer A
Survey the maximum short circuit current I1 of transformer.
Certainly, also can be to the three-phase of the transformer to be measured after heating by mutually carrying out short circuit in specific implementation process
Experiment, obtains the maximum short circuit current per phase, and user can specifically set according to actual conditions, no longer be specifically limited herein.
Step S500：The transformer to be measured is down to environment temperature, the transformer to be measured to being down to environment temperature
The maximum short circuit current I2 of the transformer to be measured at a temperature of progress short-circuit test, measuring environment.
In a kind of possible embodiment, the described pair of transformer to be measured for being down to environment temperature carries out short-circuit examination
Test, the maximum short circuit current I2 of the transformer to be measured embodiment at a temperature of measuring environment, including：
Any phase of the transformer to be measured to being down to environment temperature carries out short-circuit test, obtains described under environment temperature
The maximum short circuit current I2 of transformer to be measured.
In specific implementation process, after after the transformer Cooling to be measured to environment temperature, the first breaker K1 of closure, the
Two breaker K2, the 3rd breaker K3, can adjust the voltage of the second generator G2 outputs by the second generator G2 pressure regulator,
To transformer to be measured carry out short-circuit test, when transformer to be measured short-circuit impedance exceed to GB1094.5-2008 standard gauges timing,
From current transformer A read environment at a temperature of the transformer to be measured maximum short circuit current I2.
Certainly, also can be to the three-phase of the transformer to be measured under environment temperature by mutually carrying out in specific implementation process
Short-circuit test, obtains the maximum short circuit current per phase, and user can specifically be set according to actual conditions, and specific limit is no longer done herein
It is fixed.
Step S600：The I1 and I2 is contrasted, influence of the fuel factor to the transformer anti-short circuit capability to be measured is obtained.
In specific implementation process, Δ I/I2 can be calculated, wherein, the Δ I=I2-I1, Δ I/I2 is change after heating
Depressor can bear the ratio of maximum short circuit current reduction, i.e. influence of the fuel factor to the transformer anti-short circuit capability.
The test method that fuel factor provided in an embodiment of the present invention influences on transformer anti-short circuit capability, including：To be measured
Step-up side applies total losses, low pressure terminal shortcircuit, wherein, open circuit loss and load of the total losses for transformer to be measured
Sum is lost；Test the oil temperature of the transformer to be measured；If the oil temperature of the transformer to be measured is stable, to the transformation to be measured
The high-pressure side of device stops applying total losses；Short-circuit test is carried out to the transformer to be measured after heating, it is described after measurement heating
The maximum short circuit current I1 of transformer to be measured；The transformer to be measured is down to environment temperature, to being down to described in environment temperature
Transformer to be measured carries out the maximum short circuit current I2 of the transformer to be measured at a temperature of short-circuit test, measuring environment；Contrast is described
I1 and I2, obtains influence of the fuel factor to the transformer anti-short circuit capability to be measured.Fuel factor pair provided in an embodiment of the present invention
The test method of transformer anti-short circuit capability influence, it is adaptable to any type of transformer, by step-up side to be measured
Apply total losses, low pressure terminal shortcircuit, simulate transformer actual operating mode to be measured, the short circuit of the transformer to be measured after measurement heating
The maximum short circuit current of transformer to be measured under electric current and environment temperature, thermal effect is obtained according to the contrast of the two maximum short circuit currents
Tackle the influence of transformer anti-short circuit capability.This method test result is accurate, simple to operation.
Those skilled in the art will readily occur to its of the present invention after the disclosure that specification and practice are invented here is considered
Its embodiment.The application be intended to the present invention any modification, purposes or adaptations, these modifications, purposes or
Person's adaptations follow the general principle of the present invention and including undocumented common knowledge in the art of the invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
Invention described above embodiment is not intended to limit the scope of the present invention..
Claims (5)
1. the test method that a kind of fuel factor influences on transformer anti-short circuit capability, it is characterised in that methods described includes：
Total losses, low pressure terminal shortcircuit are applied to step-up side to be measured, wherein, the total losses are the zero load of transformer to be measured
Loss and load loss sum；
Test the oil temperature of the transformer to be measured；
If the oil temperature of the transformer to be measured is stable, the high-pressure side of the transformer to be measured is stopped applying total losses；
Short-circuit test is carried out to the transformer to be measured after heating, the maximum short circuit electricity of the transformer to be measured after measurement heating
Flow I1；
The transformer to be measured is down to environment temperature, short-circuit test is carried out to the transformer to be measured for being down to environment temperature,
The maximum short circuit current I2 of the transformer to be measured at a temperature of measuring environment；
The I1 and I2 is contrasted, influence of the fuel factor to the transformer anti-short circuit capability to be measured is obtained.
2. the method as described in claim 1, it is characterised in that the oil temperature of the transformer to be measured is stable to be included：
Calculate the oil temperature change of transformer to be measured each hour；
When continuous three small, the oil temperature change is respectively less than 1K, then the oil temperature of the transformer to be measured is stable.
3. the method as described in claim 1, it is characterised in that the transformer to be measured after described pair of heating carries out short-circuit examination
Test, the maximum short circuit current I1 of the transformer to be measured after measurement heating, including：
Short-circuit test is carried out to any phase of the transformer to be measured after heating, the transformer to be measured is obtained after heating most
Big short circuit current flow I1.
4. method as claimed in claim 3, it is characterised in that the described pair of transformer to be measured for being down to environment temperature is carried out
The maximum short circuit current I2 of the transformer to be measured at a temperature of short-circuit test, measuring environment, including：
Any phase of the transformer to be measured to being down under environment temperature carries out short-circuit test, obtains described under environment temperature treat
Survey the maximum short circuit current I2 of transformer.
5. the method as described in claim 1, it is characterised in that it is described the step-up side to be measured is applied total losses,
Low pressure terminal shortcircuit includes：
The total losses are obtained by the pressure regulator and power meter of generator, and the total losses are applied to the transformation to be measured
The high-pressure side of device, by any phase short circuit of the low-pressure end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710377736.4A CN107144758B (en) | 2017-05-25 | 2017-05-25 | Method for testing influence of thermal effect on short-circuit resistance of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710377736.4A CN107144758B (en) | 2017-05-25 | 2017-05-25 | Method for testing influence of thermal effect on short-circuit resistance of transformer |
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| Publication Number | Publication Date |
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| CN107144758A true CN107144758A (en) | 2017-09-08 |
| CN107144758B CN107144758B (en) | 2020-02-07 |
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| CN201710377736.4A Active CN107144758B (en) | 2017-05-25 | 2017-05-25 | Method for testing influence of thermal effect on short-circuit resistance of transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817413A (en) * | 2017-10-25 | 2018-03-20 | 国网福建省电力有限公司 | The method of unshorting Resistance Influence in the experiment of transformer low-voltage short-circuit impedance |
| CN109541339A (en) * | 2018-10-26 | 2019-03-29 | 苏州华电电气股份有限公司 | Power transformer bears short-circuit capacity pilot system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100955719B1 (en) * | 2009-10-06 | 2010-05-03 | 삼성계측제어(주) | An apparatus for preventing an overheated state and sensing open state of the secondary terminal of a current transformer |
| CN201637799U (en) * | 2010-04-07 | 2010-11-17 | 蒋光祖 | Rated load short circuit and temperature rise testing device of ultrahigh-capacity single-phase transformer |
| CN103267921A (en) * | 2013-05-14 | 2013-08-28 | 国家电网公司 | Method for verifying anti-short-circuit capacity of transformer |
| CN104569724A (en) * | 2015-01-06 | 2015-04-29 | 国家电网公司 | Transformer short-circuit fault comprehensive diagnosis method |
| CN106024308A (en) * | 2016-05-19 | 2016-10-12 | 天津送变电工程公司 | Construction method for heating ultra-high voltage transformer oil with low-frequency current short circuit method |
| CN106054005A (en) * | 2016-08-03 | 2016-10-26 | 国网天津市电力公司 | Automatic test system for temperature rise test of transformer |
| CN106650055A (en) * | 2016-12-06 | 2017-05-10 | 国网内蒙古东部电力有限公司检修分公司 | Dynamic thermal stability assessment method for short circuit of transformer under extremely cold condition |
-
2017
- 2017-05-25 CN CN201710377736.4A patent/CN107144758B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100955719B1 (en) * | 2009-10-06 | 2010-05-03 | 삼성계측제어(주) | An apparatus for preventing an overheated state and sensing open state of the secondary terminal of a current transformer |
| CN201637799U (en) * | 2010-04-07 | 2010-11-17 | 蒋光祖 | Rated load short circuit and temperature rise testing device of ultrahigh-capacity single-phase transformer |
| CN103267921A (en) * | 2013-05-14 | 2013-08-28 | 国家电网公司 | Method for verifying anti-short-circuit capacity of transformer |
| CN104569724A (en) * | 2015-01-06 | 2015-04-29 | 国家电网公司 | Transformer short-circuit fault comprehensive diagnosis method |
| CN106024308A (en) * | 2016-05-19 | 2016-10-12 | 天津送变电工程公司 | Construction method for heating ultra-high voltage transformer oil with low-frequency current short circuit method |
| CN106054005A (en) * | 2016-08-03 | 2016-10-26 | 国网天津市电力公司 | Automatic test system for temperature rise test of transformer |
| CN106650055A (en) * | 2016-12-06 | 2017-05-10 | 国网内蒙古东部电力有限公司检修分公司 | Dynamic thermal stability assessment method for short circuit of transformer under extremely cold condition |
Non-Patent Citations (1)
| Title |
|---|
| 黄娇 等: "干式变压器模拟负载法温升试验", 《电子质量》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817413A (en) * | 2017-10-25 | 2018-03-20 | 国网福建省电力有限公司 | The method of unshorting Resistance Influence in the experiment of transformer low-voltage short-circuit impedance |
| CN107817413B (en) * | 2017-10-25 | 2023-10-17 | 国网福建省电力有限公司 | Method for eliminating influence of short-circuit resistance in transformer low-voltage short-circuit impedance test |
| CN109541339A (en) * | 2018-10-26 | 2019-03-29 | 苏州华电电气股份有限公司 | Power transformer bears short-circuit capacity pilot system |
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| Publication number | Publication date |
|---|---|
| CN107144758B (en) | 2020-02-07 |
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