CN108508303A - A kind of Separated radiating transformer temperature rise test measuring system and method - Google Patents
A kind of Separated radiating transformer temperature rise test measuring system and method Download PDFInfo
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- CN108508303A CN108508303A CN201810379817.2A CN201810379817A CN108508303A CN 108508303 A CN108508303 A CN 108508303A CN 201810379817 A CN201810379817 A CN 201810379817A CN 108508303 A CN108508303 A CN 108508303A
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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
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- Environmental & Geological Engineering (AREA)
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- Housings And Mounting Of Transformers (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The present invention relates to a kind of Separated radiating transformer temperature rise test measuring system and methods, including：Experiment power supply and metering system are connect with Separated radiating formula transformer by circuit；Radiator group passes through piping connection with the input/output port of transformer；Multigroup temperature sensor, first group of temperature sensor distribution is arranged at the top of transformer, second group of temperature sensor distribution is arranged in the bottom of transformer, and the surrounding in transformer is arranged in the distribution of third group temperature sensor, and the input/output port in transformer is arranged in the 4th group of temperature sensor distribution；Temperature polling instrument is connect with every group of temperature sensor by circuit respectively, monitors the temperature at each position of the transformer measured by each group temperature sensor in real time, and the record storage of data is measured at interval of one end time.The present invention is easily operated, accuracy is high, highly practical；Under conditions of not increasing testing equipment reinvestment, Separated radiating transformer temperature measurement can be smoothly realized.
Description
Technical field
The present invention relates to a kind of transformer temperature rise test system and methods, refer in particular to three-phase double winding Separated radiating oil immersion
The temperature rise test measuring system and method for formula power transformer.
Background technology
With the fast development of Chinese national economy, big city start to show densely populated, skyscraper in groups, electric power
The features such as load density is high；And the land resource of city load center is very rare simultaneously.Therefore, in the high electricity of infrastructure
It presses, the substation of large capacity has become the preferential solution for meeting the ever-increasing electric load demand in city.Underground becomes
Power station is compacter with device layout, requires equipment operational reliability height, to security against fire, Wen Sheng and criteria of noise control
High feature.
In the process of running, due to there is the presence of iron loss and copper loss, these losses are converted into heat and needs to transformer
It distributes, otherwise transformer temperature can be caused to continue to increase, to accelerate the aging of inside transformer insulating materials, injure
Product safety reliability and longtime running.In order to realize that reducing temperature achievees the purpose that heat dissipation, ensures equipment reliability of operation,
Need the matched transformer for underground substation with appropriate cooling device.For the design side of the cooling device of subway transformer
Case comes in every shape for now, and the arrangement quantity into flowline is few, and the hanging net operation time is short, empirical data shortcoming.
For the cooling device of subway transformer, the notably following in product design：（1）Heat dissipation pipeline arrangement must
It must be rationally, it is ensured that oil flow pressure loss is small, and region of bypassed oil range and quantity should not be too many；（2）Temperature rises numerical value and must satisfy technology association
View and/or standard GB1094.2 in prescribed requirement；（3）Pressure in transformer body fuel tank should not be too large；（4）Environmental noise
Have to comply with city noise requirement.
For these reasons, how under the premise of meeting subway transformer temperature limit requirement, it is ensured that oil circuit is unimpeded, carries
The problem of rising cooling efficiency, improving the service ability of product high power capacity, be current urgent need to resolve.Join to such design of transformer
On the basis of number carries out verification repeatedly, repeatedly optimization, present invention proposition is a kind of to be based on minimum fabrication cost, and can ensure product
Safe and reliable in life cycle management, economical operation Separated radiating transformer temperature rise test measuring system and method.
Invention content
The object of the present invention is to provide a kind of Separated radiating transformer temperature rise test measuring system and method, easily operated,
Accuracy is high, highly practical；Under conditions of not increasing testing equipment reinvestment, Separated radiating transformer temperature can be smoothly realized
It rises and measures.
To achieve the above object, the present invention provides a kind of Separated radiating transformer temperature rise test measuring system, including：Experiment
Power supply and metering system are connect with Separated radiating formula transformer by circuit；Radiator group, it is logical with the input/output port of transformer
Cross piping connection；Multigroup temperature sensor, first group of temperature sensor distribution are arranged at the top of transformer, and second group of temperature passes
Sensor distribution is arranged in the bottom of transformer, and the surrounding in transformer, the 4th group of temperature is arranged in the distribution of third group temperature sensor
The input/output port in transformer is arranged in sensor distribution；Temperature polling instrument is connected with every group of temperature sensor by circuit respectively
It connects, monitors the temperature at each position of the transformer measured by each group temperature sensor in real time, and surveyed at interval of one end time
Measure the record storage of data.
The high-pressure side of the transformer is connect with experiment power supply and metering system by circuit, the transformer it is low
Press side three-phase short circuit.
The radiator group is connected by the input port of radiator oil inlet pipe and transformer, and the radiator group passes through
The delivery outlet of radiator flowline and transformer connects.
Case lid top of the installation site of the radiator group higher than transformer.
First group of temperature sensor is made of 6 the first temperature sensors, and the case lid in transformer is arranged in distribution
Top, and it is located at the high and low pressure side of every phase coil, it is used for the top-oil temperature of measuring transformer.
Second group of temperature sensor is made of 6 second temperature sensors, and the fuel tank in transformer is arranged in distribution
Bottom, and apart from the position of bottom 300mm, it is used for the bottom oil temperature of measuring transformer.
Above and below each installation position of second temperature sensor and the installation position of each first temperature sensor
It is corresponding.
The third group temperature sensor is made of 6 third temperature sensors, and the side wall in transformer is arranged in distribution
Surrounding, the position of the side wall 2m apart from transformer, and positioned at 1/2 height of the side wall of transformer.
The 4th group of temperature sensor is made of 2 the 4th temperature sensors, is separately positioned on radiator oil inlet pipe
On radiator flowline, and it is located closely adjacent to the position of transformer box wall.
The present invention also provides a kind of Separated radiating transformer temperature rise test measurement methods, are measured using above-mentioned temperature rise test
System is realized, is comprised the steps of：
S1, temperature rise test first stage：Apply total losses to transformer by experiment power supply and metering system, when the top of transformer
In the case of the rising change rate of layer oil temperature is less than 1K, and maintenance 3 is small, it is believed that Wen Sheng reaches stable；And according to all temperature
The measured value of sensor calculates the oil temperature Wen Sheng and oil temperature average temperature rising of the first stage；
S2, temperature rise test second stage：Apply rated current to transformer by experiment power supply and metering system, maintains 1 hour
Afterwards, the winding hot resistance of power failure measuring transformer；And according to the measured value of all temperature sensors, determine that power supply disconnects moment
Winding hot resistance, be determined by calculation winding copper oil mean temperature difference, and combine the oil obtained by the temperature rise test first stage
Warm average temperature rising calculates the average temperature rising and temperature rise of hot spot of each winding of transformer.
In conclusion Separated radiating transformer temperature rise test measuring system provided by the present invention and method, effectively solve
Transformer is because that Separated radiating and concentrating is measured into temperature caused by temperature distributing disproportionation caused by fuel-displaced is inaccurate
Problem has the advantages that：Test method is reasonable, easily operated, accuracy is high, highly practical；It is set not increasing experiment
Under conditions of standby reinvestment, it just can realize that Separated radiating transformer temperature rises the accurate measurement of data；Suitable for 110kV~220kV
The temperature measurement and optimization design of the oil-immersed power transformer of the Separated radiating in urban district and power station.
Description of the drawings
Fig. 1 is the elementary diagram of the Separated radiating transformer temperature rise test measuring system in the present invention；
Fig. 2 and Fig. 3 is respectively the structural schematic diagram of the Separated radiating transformer temperature rise test measuring system in the present invention.
Specific implementation mode
Below in conjunction with Fig. 1~Fig. 3, by preferred embodiment to the technology contents of the present invention, construction feature, institute's reached purpose
And effect is described in detail.
As shown in Figure 1, Figure 2 and Figure 3, it is Separated radiating transformer temperature rise test measuring system provided by the present invention, packet
Contain：Experiment power supply and metering system 1, with subway transformer 2（The one of which of Separated radiating transformer）It is connected by circuit；It dissipates
Hot device group 3 passes through piping connection with the input/output port of subway transformer 2；Multigroup temperature sensor, first group of temperature sensor
Distribution is arranged at the top of subway transformer 2, and second group of temperature sensor distribution is arranged in the bottom of subway transformer 2, third
The surrounding in subway transformer 2 is arranged in group temperature sensor distribution, and the 4th group of temperature sensor distribution is arranged in subway transformer 2
Input/output port；Temperature polling instrument 7 is connect with every group of temperature sensor by circuit respectively, is monitored each group temperature in real time and is passed
The temperature at each position of the subway transformer 2 measured by sensor, and measure at interval of one end time the record storage of data.
The high-pressure side of the subway transformer 2 is connect with experiment power supply and metering system 1 by circuit, the underground
The low-pressure side three-phase short circuit of transformer 2.
The radiator group 3 is connect by radiator oil inlet pipe 4 with the input port of subway transformer 2, the heat dissipation
Device group 3 is connect by radiator flowline 5 with the delivery outlet of subway transformer 2.
Case lid top of the installation site of the radiator group 3 higher than subway transformer 2.
In a preferred embodiment of the invention, first group of temperature sensor is by 6 6.3 groups of the first temperature sensors
At distribution is arranged at the top of the case lid of subway transformer 2, and is located at the high and low pressure side of every phase coil, for measuring underground
The top-oil temperature of transformer 2.
In a preferred embodiment of the invention, second group of temperature sensor is by 6 6.2 groups of second temperature sensors
At the tank bottoms in subway transformer 2 are arranged in distribution, and apart from the position of bottom 300mm, for measuring subway transformer
2 bottom oil temperature.
The setting position of the installation position and each first temperature sensor 6.3 of each second temperature sensor 6.2
Set correspondence up and down.
In a preferred embodiment of the invention, the third group temperature sensor is by 6 6.1 groups of third temperature sensors
At the side wall surrounding in subway transformer 2, the position of the side wall profile 2m apart from subway transformer 2 is arranged in distribution, and is located at
1/2 height of the side wall profile of subway transformer 2.6 third temperature sensors 6.1 are the rule according to GB/T1094.2
The fixed side wall surrounding being arranged in subway transformer 2.
In a preferred embodiment of the invention, the 4th group of temperature sensor is by 2 6.4 groups of the 4th temperature sensors
At being separately positioned on radiator oil inlet pipe 4 and radiator flowline 5, and be located closely adjacent to the position of 2 tank wall of subway transformer
It sets.
The present invention also provides a kind of Separated radiating transformer temperature rise test measurement methods, are measured using above-mentioned temperature rise test
System is realized, is comprised the steps of：
S1, temperature rise test first stage：Apply total losses to subway transformer 2 by experiment power supply and metering system 1, works as underground
The rising change rate of the top-oil temperature of transformer 2 is less than 1K（Kelvin）, and maintain 3 it is small in the case of, it is believed that Wen Sheng reaches
Stablize；And according to the measured value of all temperature sensors, calculate the oil temperature Wen Sheng and oil temperature average temperature rising of the first stage；
S2, temperature rise test second stage：Apply rated current to subway transformer 2 by experiment power supply and metering system 1, maintains
After 1 hour, has a power failure and measure the winding hot resistance of subway transformer 2；And according to the measured value of all temperature sensors, based on outer
Pushing manipulation determines that power supply disconnects the winding hot resistance of moment, winding copper oil mean temperature difference is determined by calculation, and combine Wen Sheng
The oil temperature average temperature rising obtained by the first stage is tested, and then calculates the average temperature rising and hot spot of each winding of subway transformer 2
Wen Sheng.
In conclusion Separated radiating transformer temperature rise test measuring system provided by the present invention and method, effectively solve
Transformer is because that Separated radiating and concentrating is measured into temperature caused by temperature distributing disproportionation caused by fuel-displaced is inaccurate
Problem.The present invention is being obtained for the design feature for the Separated radiating transformer that oil stream, oil temperature are unevenly distributed using multi-point temperature measurement
On the basis of obtaining accurate data, contribute to the cooling system for advanced optimizing Separated radiating transformer so that oil stream, oil temperature distribution
Tend to be reasonable, fluid pressure losses are small, and radiating efficiency is high, while ensuring product service life, to further saving manufacture
Cost will have very important realistic meaning.
Therefore, the invention has the advantages that：Test method is reasonable, easily operated, accuracy is high, highly practical；
Under conditions of not increasing testing equipment reinvestment, it just can realize that Separated radiating transformer temperature rises the accurate measurement of data；It is applicable in
In the temperature measurement and optimization design of the oil-immersed power transformer of the Separated radiating in the urban districts 110kV~220kV and power station.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a kind of Separated radiating transformer temperature rise test measuring system, which is characterized in that include：
Experiment power supply and metering system are connect with Separated radiating formula transformer by circuit；
Radiator group passes through piping connection with the input/output port of transformer；
Multigroup temperature sensor, first group of temperature sensor distribution are arranged in the top of transformer, second group of temperature sensor point
Cloth is arranged in the bottom of transformer, and the surrounding in transformer, the 4th group of temperature sensor is arranged in the distribution of third group temperature sensor
The input/output port in transformer is arranged in distribution；
Temperature polling instrument is connect with every group of temperature sensor by circuit respectively, is monitored in real time measured by each group temperature sensor
Transformer each position temperature, and measure at interval of one end time the record storage of data.
2. Separated radiating transformer temperature rise test measuring system as described in claim 1, which is characterized in that the transformer
High-pressure side connect by circuit with experiment power supply and metering system, the low-pressure side three-phase short circuit of the transformer.
3. Separated radiating transformer temperature rise test measuring system as described in claim 1, which is characterized in that the radiator
Group is connected by the input port of radiator oil inlet pipe and transformer, and the radiator group passes through radiator flowline and transformer
Delivery outlet connection.
4. Separated radiating transformer temperature rise test measuring system as described in claim 1, which is characterized in that the radiator
Case lid top of the installation site of group higher than transformer.
5. Separated radiating transformer temperature rise test measuring system as described in claim 1, which is characterized in that described first group
Temperature sensor is made of 6 the first temperature sensors, and distribution is arranged at the top of the case lid of transformer, and is located at every phase line
The high and low pressure side of circle is used for the top-oil temperature of measuring transformer.
6. Separated radiating transformer temperature rise test measuring system as claimed in claim 5, which is characterized in that described second group
Temperature sensor is made of 6 second temperature sensors, and the tank bottoms in transformer are arranged in distribution, and apart from bottom
The position of 300mm is used for the bottom oil temperature of measuring transformer.
7. Separated radiating transformer temperature rise test measuring system as claimed in claim 6, which is characterized in that each described the
The installation position of two temperature sensors is corresponding up and down with the installation position of each first temperature sensor.
8. Separated radiating transformer temperature rise test measuring system as described in claim 1, which is characterized in that the third group
Temperature sensor is made of 6 third temperature sensors, and the side wall surrounding in transformer, the side wall apart from transformer is arranged in distribution
The position of 2m, and positioned at 1/2 height of the side wall of transformer.
9. Separated radiating transformer temperature rise test measuring system as claimed in claim 3, which is characterized in that described the 4th group
Temperature sensor is made of 2 the 4th temperature sensors, is separately positioned on radiator oil inlet pipe and radiator flowline, and
It is located closely adjacent to the position of transformer box wall.
10. a kind of Separated radiating transformer temperature rise test measurement method, using temperature such as according to any one of claims 1 to 9
It rises testing ＆ measuring system to realize, comprise the steps of：
S1, temperature rise test first stage：Apply total losses to transformer by experiment power supply and metering system, when the top of transformer
In the case of the rising change rate of layer oil temperature is less than 1K, and maintenance 3 is small, it is believed that Wen Sheng reaches stable；And according to all temperature
The measured value of sensor calculates the oil temperature Wen Sheng and oil temperature average temperature rising of the first stage；
S2, temperature rise test second stage：Apply rated current to transformer by experiment power supply and metering system, maintains 1 hour
Afterwards, the winding hot resistance of power failure measuring transformer；And according to the measured value of all temperature sensors, determine that power supply disconnects moment
Winding hot resistance, be determined by calculation winding copper oil mean temperature difference, and combine the oil obtained by the temperature rise test first stage
Warm average temperature rising calculates the average temperature rising and temperature rise of hot spot of each winding of transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810379817.2A CN108508303A (en) | 2018-04-25 | 2018-04-25 | A kind of Separated radiating transformer temperature rise test measuring system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810379817.2A CN108508303A (en) | 2018-04-25 | 2018-04-25 | A kind of Separated radiating transformer temperature rise test measuring system and method |
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| Publication Number | Publication Date |
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| CN108508303A true CN108508303A (en) | 2018-09-07 |
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ID=63383417
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| CN201810379817.2A Pending CN108508303A (en) | 2018-04-25 | 2018-04-25 | A kind of Separated radiating transformer temperature rise test measuring system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113671284A (en) * | 2021-07-23 | 2021-11-19 | 天津天传电控设备检测有限公司 | Box-type substation loss test system and method |
| CN113835006A (en) * | 2021-09-24 | 2021-12-24 | 南方电网科学研究院有限责任公司 | Method and device for testing step temperature rise test of thermosetting epoxy insulating part and application |
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| CN103884933A (en) * | 2014-03-10 | 2014-06-25 | 山东达驰电气有限公司 | Temperature rise test method for large transformer |
| CN106876097A (en) * | 2017-04-14 | 2017-06-20 | 国网上海市电力公司 | The large-scale power transformer cooling system of underground substation |
| CN106920643A (en) * | 2017-04-25 | 2017-07-04 | 国网上海市电力公司 | A kind of Separated Cooling Type transformer and its heat dissipating method |
| CN106932219A (en) * | 2017-05-03 | 2017-07-07 | 国网上海市电力公司 | A kind of transformer Cooling simulation test device that formula is arranged based on split |
| CN107066799A (en) * | 2017-01-03 | 2017-08-18 | 国网上海市电力公司 | A kind of split type cooling hot-spot temperature of transformer computational methods in underground substation |
| CN208026814U (en) * | 2018-04-25 | 2018-10-30 | 国网上海市电力公司 | A kind of Separated radiating transformer temperature rise test measuring system |
-
2018
- 2018-04-25 CN CN201810379817.2A patent/CN108508303A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884933A (en) * | 2014-03-10 | 2014-06-25 | 山东达驰电气有限公司 | Temperature rise test method for large transformer |
| CN107066799A (en) * | 2017-01-03 | 2017-08-18 | 国网上海市电力公司 | A kind of split type cooling hot-spot temperature of transformer computational methods in underground substation |
| CN106876097A (en) * | 2017-04-14 | 2017-06-20 | 国网上海市电力公司 | The large-scale power transformer cooling system of underground substation |
| CN106920643A (en) * | 2017-04-25 | 2017-07-04 | 国网上海市电力公司 | A kind of Separated Cooling Type transformer and its heat dissipating method |
| CN106932219A (en) * | 2017-05-03 | 2017-07-07 | 国网上海市电力公司 | A kind of transformer Cooling simulation test device that formula is arranged based on split |
| CN208026814U (en) * | 2018-04-25 | 2018-10-30 | 国网上海市电力公司 | A kind of Separated radiating transformer temperature rise test measuring system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113671284A (en) * | 2021-07-23 | 2021-11-19 | 天津天传电控设备检测有限公司 | Box-type substation loss test system and method |
| CN113835006A (en) * | 2021-09-24 | 2021-12-24 | 南方电网科学研究院有限责任公司 | Method and device for testing step temperature rise test of thermosetting epoxy insulating part and application |
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Application publication date: 20180907 |