CN107168412A - Power transformer cooling system control apparatus and method - Google Patents
Power transformer cooling system control apparatus and method Download PDFInfo
- Publication number
- CN107168412A CN107168412A CN201710383127.XA CN201710383127A CN107168412A CN 107168412 A CN107168412 A CN 107168412A CN 201710383127 A CN201710383127 A CN 201710383127A CN 107168412 A CN107168412 A CN 107168412A
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- Prior art keywords
- setting valve
- temperature
- blower fan
- cooler
- transformer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Transformer Cooling (AREA)
Abstract
The present invention relates to a kind of power transformer cooling system control apparatus and method, the device includes cooling controller, internal temperature sensor, external temperature sensor, air velocity transducer, frequency converter and cooler blower fan group；Cooler blower fan group is made up of work cooler blower fan and auxiliary cooler blower fan；This method includes setting control parameter, collection ambient parameter, adjustment control parameter, and cooler is controlled according to internal temperature sensor：The radiating of transformer is considered with wind speed, temperature adjustment is carried out, is considered with the influence that environment temperature radiates to transformer, carries out temperature adjustment；Using certain time as the cycle, the method for operation of automatic alternate cooler.The present invention is reasonable in design, both ensure that transformer temperature was maintained in a controllable scope, and the cooler of transformer at utmost can be rationally utilized again, extends the service life of cooler, improves its utilization rate, saved the energy.
Description
Technical field
The invention belongs to power transformer technical field, especially a kind of power transformer cooling system control apparatus and side
Method.
Background technology
Modern power transformer is because capacity is big, voltage is high, and the loss of transformer in itself is very important.In operation
When, these losses are changing into heat by various modes so that the temperature rise of transformer.In transformer station high-voltage side bus, this temperature
Rising to be controlled by, because the payload that transformer can be loaded, influenceed very big by its temperature, if transformer is long
Between be in beyond temperature limiting operation, high temperature can gradually make transformer insulating materials be denatured aging, once the winding of transformer
With the insulating materials ageing failure that uses of iron core, not only the service life of transformer will be greatly shortened, also having very much can
It can cause the accidents such as Explosion of Transformer so that failure propagation, national economy and personal safety are caused a significant threat.
Capacity and the rise of voltage class with power transformer, the out-of-date power transformer without cooler self-cooled
The cooling requirements of large-capacity power transformer in itself can not be met again, therefore, in order to ensure the safe and reliable operation of transformer, mesh
Preceding domestic 220kV and the transformer of above transformer station generally use the air-cooled type of cooling.
In order to ensure the safe operation of transformer, in the process of running, power transformation operation personnel must note transformer at the moment
Oil temperature, according to regulating and controlling transformer temperature by the input or excision that adjust radiator fan under the requirement of standard GB/T 1094.2
Degree.This mode need it is artificial be monitored device body temperature and oil temperature, and cooler is made according to temperature change in real time
Put into excision action.Artificial method of operating needs the real-time monitoring temperature change of someone, and wastes time and energy.For keeping temperature
Stablize and save the energy, when putting into cooler, a part of cooler fan is generally only put into, when transformer load and temperature
Cut off after decline, and switching cooler is repeated when coming into operation, easily caused conventional cooler aging or even damage, and its
The situation that his cooler seldom puts into operation.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind it is reasonable in design, save the energy and safety can
The power transformer cooling system control apparatus and method leaned on.
The present invention solves its technical problem and takes following technical scheme to realize：
A kind of power transformer cooling system control apparatus, including cooling controller, internal temperature sensor, external temperature
Sensor, air velocity transducer, frequency converter and cooler blower fan group；The cooler blower fan group is by work cooler blower fan and auxiliary
Cooler blower fan is constituted；The respective input of the cooling controller connects the internal temperature sensor, external temperature and passed respectively
The output end of sensor, air velocity transducer, the corresponding output end of cooling controller connects frequency converter, work cooler blower fan and auxiliary respectively
Help the respective input of cooler blower fan；The corresponding output end of the frequency converter connects work cooler blower fan and supplement heat rejecter respectively
The respective input of device blower fan.
The internal temperature sensor and external temperature sensor use NTC thermistor sensor, and the wind speed is passed
Sensor uses RY-FS01 sensors.
A kind of control method of power transformer cooling system control apparatus, comprises the following steps：
Step 1：Control parameter is set；
Step 2：Gather ambient parameter；
Step 3：Adjust control parameter：When environment temperature is more than 30 DEG C, start setting valve, high temperature setting valve, dangerous temperature
Degree setting valve, low temperature setting valve reduce by 5 DEG C respectively；When environment temperature is below 10 DEG C, start setting valve, high temperature setting valve,
Dangerous temperature setting valve, low temperature setting valve raise 4 DEG C respectively；Wind speed often improves unit wind speed relative to wind speed initial value, starts
Setting valve, high temperature setting valve, dangerous temperature setting valve, low temperature setting valve raise 1 DEG C respectively；
Step 4：Cooler is controlled according to internal temperature sensor：
Step 5：Wind speed, which often improves 0.4m/s, and setting valve temperature can raise 1 DEG C is considered to the radiating of transformer with wind speed；
Step 6：Considered with the influence that environment temperature radiates to transformer, when environment temperature is more than 30 DEG C, setting valve temperature
Degree need to reduce at least 5 DEG C；When environment temperature is below 10 DEG C, setting valve temperature can raise 4 DEG C；
Step 7：Using certain time as the cycle, the method for operation of automatic alternate cooler, " work ", " standby " and " auxiliary "
Three groups of coolers are redistributed.
The step 4 comprises the following steps：
Step 4-1：Judge whether internal temperature is more than or equal to the startup setting valve, if it is, step 4-2 is turned to, it is no
Then turn to step 4-1；
Step 4-2：Cooling controller controls the electric voltage frequency of cooler blower fan to be power frequency 50Hz, starts cooling controller；
Step 4-3：Judge whether internal temperature is more than or equal to the high temperature setting valve, if it is, step 4-4 is turned to, it is no
Then turn to step 4-12；
Step 4-4：Cooling controller controls the electric voltage frequency of auxiliary cooler blower fan to be power frequency 50Hz, starts supplement heat rejecter
Device blower fan；
Step 4-5：Judge whether internal temperature is more than or equal to the dangerous temperature setting valve, if it is, turning to step 4-
6, otherwise turn to step 4-10；
Step 4-6：The electric voltage frequency of auxiliary cooler blower fan is adjusted to 60Hz by cooling controller control control frequency converter；
Step 4-7：Judge whether internal temperature is less than the dangerous temperature setting valve, if it is, step 4-8 is turned to, it is no
Then turn to step 4-7；
Step 4-8：Postpone default time delay, cooling controller control controls frequency converter by auxiliary cooler blower fan
Electric voltage frequency is adjusted to power frequency 50Hz；
Step 4-9：Judge whether internal temperature is less than the high-temperature temperature setting valve, if it is, step 4-10 is turned to, it is no
Then turn to step 4-9；
Step 4-10：Postpone default time delay, cooling controller control auxiliary cooler blower fan is out of service；
Step 4-11：Judge whether internal temperature is less than the cryogenic temperature setting valve, if it is, step 4-12 is turned to,
Otherwise step 4-11 is turned to；
Step 4-12：Cooling controller control work cooler blower fan is out of service.
The control parameter includes starting setting valve, high temperature setting valve, dangerous temperature setting valve, low temperature setting valve, delay
Time and wind speed initial value.
The collection ambient parameter includes input internal temperature sensor, external temperature sensor, air velocity transducer collection
Internal temperature, environment temperature and wind speed.
Advantages and positive effects of the present invention are：
1st, the present invention considers the temperature and wind in transformer external environment condition using the external information of acquisition as reference variable
Fast situation, coordinates to analyze, calculates the optimal coefficient of heat transfer and optimal wind speed, pass through frequency conversion control using temperature of oil in transformer and ambient wind velocity
Technology regulation rotation speed of fan control transformer cooler processed goes out the size of wind-force, realizes optimum control.
2nd, the present invention both ensure that transformer temperature was maintained in a controllable scope, again can be at utmost rationally sharp
With the cooler of transformer, extend the service life of cooler, improve its utilization rate, saved the energy.
Brief description of the drawings
Fig. 1 is the control device structure chart of the present invention；
Fig. 2 is the control method flow chart of the present invention.
Embodiment
The present invention is further described below in conjunction with accompanying drawing：
A kind of power transformer cooling system control apparatus, as shown in figure 1, including cooling controller, internal temperature sensor
Device, external temperature sensor, air velocity transducer, frequency converter and cooler blower fan group；The cooler blower fan group is cooled down by work
Device blower fan and auxiliary cooler blower fan composition；The respective input of the cooling controller connects the internal temperature sensor respectively
Device, external temperature sensor, the output end of air velocity transducer, its corresponding output end connect frequency converter, work cooler blower fan respectively
With the respective input of auxiliary cooler blower fan；The corresponding output end of the frequency converter connects work cooler blower fan and auxiliary respectively
The respective input of cooler blower fan.
In the present embodiment, internal temperature sensor and external temperature sensor use NTC thermistor sensor, wind speed
The model RY-FS01 of sensor.Cooling controller considers temperature and wind conditions in transformer external environment condition, control
Transformer cooler goes out the size of wind-force, to realize optimum control.
A kind of control method of power transformer cooling system control apparatus, comprises the following steps：
Step 1：Control parameter is set；The control parameter includes startup setting valve, high temperature setting valve, dangerous temperature and adjusted
Value, low temperature setting valve, time delay and wind speed initial value；
In the present embodiment, control parameter is set before start：Start setting valve and be set to 65 DEG C, high temperature setting valve is set to 80 DEG C；
Dangerous temperature setting valve is 85 DEG C；Low temperature is adjusted as 40 DEG C, and time delay is 30min, unit wind speed 0.4m/s, wind speed initial value
For 0.1m/s；
Step 2：Gather ambient parameter：Input what internal temperature sensor, external temperature sensor, air velocity transducer were gathered
Internal temperature, environment temperature and wind speed；
Step 3：Adjust control parameter：When environment temperature is more than 30 DEG C, start setting valve, high temperature setting valve, dangerous temperature
Degree setting valve, low temperature setting valve reduce by 5 DEG C respectively；When environment temperature is below 10 DEG C, start setting valve, high temperature setting valve,
Dangerous temperature setting valve, low temperature setting valve raise 4 DEG C respectively；Wind speed often improves unit wind speed relative to wind speed initial value, starts
Setting valve, high temperature setting valve, dangerous temperature setting valve, low temperature setting valve raise 1 DEG C respectively；
Step 4：Cooler is controlled according to internal temperature sensor：It is made up of step in detail below：
Step 4-1：Judge whether internal temperature is more than or equal to the startup setting valve, if it is, step 4-2 is turned to, it is no
Then turn to step 4-1；
Step 4-2：Cooling controller controls the electric voltage frequency of cooler blower fan to be power frequency 50Hz, starts cooling controller；
Step 4-3：Judge whether internal temperature is more than or equal to the high temperature setting valve, if it is, step 4-4 is turned to, it is no
Then turn to step 4-12；
Step 4-4：Cooling controller controls the electric voltage frequency of auxiliary cooler blower fan to be power frequency 50Hz, starts supplement heat rejecter
Device blower fan；
Step 4-5：Judge whether internal temperature is more than or equal to the dangerous temperature setting valve, if it is, turning to step 4-
6, otherwise turn to step 4-10；
Step 4-6：The electric voltage frequency of auxiliary cooler blower fan is adjusted to 60Hz by cooling controller control control frequency converter；
Step 4-7：Judge whether internal temperature is less than the dangerous temperature setting valve, if it is, step 4-8 is turned to, it is no
Then turn to step 4-7；
Step 4-8：Postpone default time delay, cooling controller control controls frequency converter by auxiliary cooler blower fan
Electric voltage frequency is adjusted to power frequency 50Hz；
Step 4-9：Judge whether internal temperature is less than the high-temperature temperature setting valve, if it is, step 4-10 is turned to, it is no
Then turn to step 4-9；
Step 4-10：Postpone default time delay, cooling controller control auxiliary cooler blower fan is out of service；
Step 4-11：Judge whether internal temperature is less than the cryogenic temperature setting valve, if it is, step 4-12 is turned to,
Otherwise step 4-11 is turned to；
Step 4-12：Cooling controller control work cooler blower fan is out of service.
Step 5：Wind speed, which often improves 0.4m/s, and setting valve temperature can raise 1 DEG C is considered to the radiating of transformer with wind speed.
Step 6：Considered with the influence that environment temperature radiates to transformer, when environment temperature is more than 30 DEG C, setting valve temperature
Degree need to reduce at least 5 DEG C；When environment temperature is below 10 DEG C, setting valve temperature can raise 4 DEG C.
Step 7：With 15 days for a cycle, the method for operation of automatic alternate cooler, " work " " standby " " auxiliary " three
Group cooler is redistributed.
It is emphasized that embodiment of the present invention is illustrative, rather than it is limited, therefore present invention bag
Include and be not limited to embodiment described in embodiment, it is every by those skilled in the art's technique according to the invention scheme
The other embodiment drawn, also belongs to the scope of protection of the invention.
Claims (6)
1. a kind of power transformer cooling system control apparatus, it is characterised in that：Including cooling controller, internal temperature sensor
Device, external temperature sensor, air velocity transducer, frequency converter and cooler blower fan group；The cooler blower fan group is cooled down by work
Device blower fan and auxiliary cooler blower fan composition；The respective input of the cooling controller connects the internal temperature sensor respectively
Device, external temperature sensor, the output end of air velocity transducer, the corresponding output end of cooling controller connect frequency converter, work respectively
The respective input of cooler blower fan and auxiliary cooler blower fan；The corresponding output end of the frequency converter connects work cooler respectively
The respective input of blower fan and auxiliary cooler blower fan.
2. power transformer cooling system control apparatus according to claim 1, it is characterised in that：The internal temperature is passed
Sensor and external temperature sensor use NTC thermistor sensor, and the air velocity transducer uses RY-FS01 sensors.
3. a kind of control method of power transformer cooling system control apparatus as claimed in claim 1 or 2, it is characterised in that
Comprise the following steps：
Step 1：Control parameter is set；
Step 2：Gather ambient parameter；
Step 3：Adjust control parameter：When environment temperature is more than 30 DEG C, start setting valve, high temperature setting valve, dangerous temperature whole
Definite value, low temperature setting valve reduce by 5 DEG C respectively；When environment temperature is below 10 DEG C, start setting valve, high temperature setting valve, danger
Temperature setting valve, low temperature setting valve raise 4 DEG C respectively；Wind speed often improves unit wind speed relative to wind speed initial value, and startup is adjusted
Value, high temperature setting valve, dangerous temperature setting valve, low temperature setting valve raise 1 DEG C respectively；
Step 4：Cooler is controlled according to internal temperature sensor：
Step 5：Wind speed, which often improves 0.4m/s, and setting valve temperature can raise 1 DEG C is considered to the radiating of transformer with wind speed；
Step 6：Considered with the influence that environment temperature radiates to transformer, when environment temperature is more than 30 DEG C, setting valve temperature is needed
At least 5 DEG C of reduction；When environment temperature is below 10 DEG C, setting valve temperature can raise 4 DEG C；
Step 7：Using certain time as the cycle, the method for operation of automatic alternate cooler, three groups of " work ", " standby " and " auxiliary "
Cooler is redistributed.
4. the control method of power transformer cooling system control apparatus according to claim 3, it is characterised in that：It is described
Step 4 comprises the following steps：
Step 4-1：Judge whether internal temperature is more than or equal to the startup setting valve, if it is, turning to step 4-2, otherwise turn
To step 4-1；
Step 4-2：Cooling controller controls the electric voltage frequency of cooler blower fan to be power frequency 50Hz, starts cooling controller；
Step 4-3：Judge whether internal temperature is more than or equal to the high temperature setting valve, if it is, turning to step 4-4, otherwise turn
To step 4-12；
Step 4-4：Cooling controller controls the electric voltage frequency of auxiliary cooler blower fan to be power frequency 50Hz, starts auxiliary cooler wind
Machine；
Step 4-5：Judge whether internal temperature is more than or equal to the dangerous temperature setting valve, if it is, step 4-6 is turned to, it is no
Then turn to step 4-10；
Step 4-6：The electric voltage frequency of auxiliary cooler blower fan is adjusted to 60Hz by cooling controller control control frequency converter；
Step 4-7：Judge whether internal temperature is less than the dangerous temperature setting valve, if it is, turning to step 4-8, otherwise turn
To step 4-7；
Step 4-8：Postpone default time delay, cooling controller control controls frequency converter by the voltage of auxiliary cooler blower fan
Frequency is adjusted to power frequency 50Hz；
Step 4-9：Judge whether internal temperature is less than the high-temperature temperature setting valve, if it is, turning to step 4-10, otherwise turn
To step 4-9；
Step 4-10：Postpone default time delay, cooling controller control auxiliary cooler blower fan is out of service；
Step 4-11：Judge whether internal temperature is less than the cryogenic temperature setting valve, if it is, turning to step 4-12, otherwise
Turn to step 4-11；
Step 4-12：Cooling controller control work cooler blower fan is out of service.
5. the control method of power transformer cooling system control apparatus according to claim 3, it is characterised in that：It is described
Control parameter is included at the beginning of starting setting valve, high temperature setting valve, dangerous temperature setting valve, low temperature setting valve, time delay and wind speed
Initial value.
6. the control method of power transformer cooling system control apparatus according to claim 3, it is characterised in that：It is described
Gathering ambient parameter includes input internal temperature sensor, external temperature sensor, internal temperature, the ring of air velocity transducer collection
Border temperature and wind speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710383127.XA CN107168412A (en) | 2017-05-26 | 2017-05-26 | Power transformer cooling system control apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710383127.XA CN107168412A (en) | 2017-05-26 | 2017-05-26 | Power transformer cooling system control apparatus and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107168412A true CN107168412A (en) | 2017-09-15 |
Family
ID=59821165
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710383127.XA Pending CN107168412A (en) | 2017-05-26 | 2017-05-26 | Power transformer cooling system control apparatus and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110955278A (en) * | 2019-11-20 | 2020-04-03 | 芜湖光束电子科技有限公司 | Electric appliance control cooling device |
| CN111506029A (en) * | 2020-04-10 | 2020-08-07 | 王士波 | Resource allocation method and device |
| CN112151904A (en) * | 2019-06-27 | 2020-12-29 | 北京新能源汽车股份有限公司 | Control method and controller for battery thermal management, battery thermal management system and vehicle |
| CN113284683A (en) * | 2021-05-07 | 2021-08-20 | 国家电网有限公司 | Cooling control method for high-voltage equipment |
| CN113571294A (en) * | 2021-06-11 | 2021-10-29 | 深圳供电局有限公司 | Control method and system for cooling dry-type transformer and computer equipment |
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| CN113571294A (en) * | 2021-06-11 | 2021-10-29 | 深圳供电局有限公司 | Control method and system for cooling dry-type transformer and computer equipment |
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Application publication date: 20170915 |
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