CN107424747A - A kind of transformer forces hydrologic cycle cooling system and its control method - Google Patents
A kind of transformer forces hydrologic cycle cooling system and its control method Download PDFInfo
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- CN107424747A CN107424747A CN201710631029.3A CN201710631029A CN107424747A CN 107424747 A CN107424747 A CN 107424747A CN 201710631029 A CN201710631029 A CN 201710631029A CN 107424747 A CN107424747 A CN 107424747A
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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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- 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
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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
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
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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
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
-
- 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
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention discloses a kind of transformer to force hydrologic cycle cooling system, including：The cooling device being connected with transformer, it is used for using the oil in cooling water cooling transformer oil pipe；The water replanishing device being connected with cooling device, it is used for the supplement that cooling water is carried out to the cooling device, and, the signal supervisory instrument being arranged on cooling device, water replanishing device and transformer, it is used to detect the water temperature in cooling device and water replanishing device, and the oil temperature in transformer.The present invention is used as the foundation of cooling device switching by pasta heat indicator on transformer and winding temperature indicating gage institute temperature displaying function, can effectively reflect that temperature change avoids additional temperature measuring equipment again in transformer, reduces control system hardware cost.The control method logic is concise, need not largely be calculated in control process, therefore control response speed is fast, control system is easy to operate, is suitably applied the operation of actual transformer station.
Description
Technical field
The present invention relates to the cooling device technical field of transformer, and in particular to a kind of transformer forces water circulation cooling system
System and its control method.
Background technology
With urban development and expansion, the characteristics of large size city is densely populated, high building stands in great numbers, electric load density is high and
Show simultaneously the characteristics of land resource scarcity at the load center of city.Infrastructure voltage levels Large Copacity transformer station into
To meet the solution of the ever-increasing electric load demand in city.Underground substation station equipment characteristics of compact layout, to equipment
Operational reliability and criteria of noise control are high.According to common integrated radiating mode, then it is larger to require that transformer room is set
Inlet and outlet area, and take strong-force exhaust measure to improve radiating, this will increase the difficulty of layout design and Noise measarement.In order to
While meeting power equipment radiating requirements and space and criteria of noise control, the main transformer of underground and indoor substation is often using change
Depressor body and the radiator split type of cooling arranged apart.Oily cycle forces water-cooling pattern (ODWF or ONWF) has higher
Cooling effectiveness be usually used in the cooling of Large Copacity oil-immersed power transformer in underground substation.Using the split of the type of cooling
Cooling system structure is complicated, generally comprises transformer, oil water heat exchange device, water cooling tower, water circulating pump, temperature detection, flow inspection
The cooling devices such as survey and auxiliary operational outfit, the control logic of cooling device are also complex.
The content of the invention
It is an object of the invention to provide a kind of transformer to force hydrologic cycle cooling system and its control method, makes system safe
Effec-tive Function and the radiating effect that cooling system can be ensured, and make oil surface temperature and winding temperature during transformer station high-voltage side bus equal
The purpose changed in standard prescribed limits.
To reach above-mentioned purpose, the invention provides a kind of transformer to force hydrologic cycle cooling system, including：
The cooling device being connected with transformer, it is used for using the oil in cooling water cooling transformer oil pipe；
The water replanishing device being connected with cooling device, it is used for the supplement that cooling water is carried out to the cooling device, and,
The signal supervisory instrument being arranged on cooling device, water replanishing device and transformer, its be used to detecting cooling device and
Water temperature in water replanishing device, and the oil temperature in transformer；
The cooling device includes a cooling tower and more oil water heat exchange devices being arranged in transformer；
Oil pipe connection in oil pipe and transformer in the oil water heat exchange device, water pipe in the oil water heat exchange device with it is cold
But tower connects.
Above-mentioned transformer forces hydrologic cycle cooling system, wherein, the cooling tower includes：
The blower fan being arranged at the top of cooling tower；
The cooling coil being arranged in cooling tower, it is connected with the water pipe of oil water heat exchange device；
The spray equipment being arranged in cooling tower, it is used to cool down the cooling water in cooling coil；
It is arranged on the shower water collecting-tank of cooling tower bottom；
The shower water collecting-tank is connected with spray equipment by feeding spraying pump.
Above-mentioned transformer forces hydrologic cycle cooling system, wherein, the spray equipment includes being arranged on cooling coil
One row's spray spout of side and the low pressure mist-generating nozzle being arranged on below cooling coil.
Above-mentioned transformer forces hydrologic cycle cooling system, wherein, it is provided with blowoff valve on the shower water collecting-tank.
Above-mentioned transformer forces hydrologic cycle cooling system, wherein, the water replanishing device includes：
Extra feed tank, and,
The voltage stabilization water filling device that arrival end is connected with extra feed tank, its port of export catchment with cooling coil and shower water respectively
Pond connects.
Above-mentioned transformer forces hydrologic cycle cooling system, wherein, the signal supervisory instrument includes：
The cooling tower inflow temperature sensor being arranged on cooling coil inlet pipeline；
The cooling tower leaving water temperature sensors being arranged on cooling coil outlet pipeline；
Oil surface temperature indicating gage and winding temperature indicating gage on the transformer is set, and,
The shower water thermometer and the conductivity meter of detection spray water conductivity being arranged in shower water collecting-tank.
Present invention also offers the control method that a kind of above-mentioned transformer forces hydrologic cycle cooling system, following step is included
Suddenly：Switching according to oil temperature change control in transformer to oil water heat exchange device, at the same it is cold according to the change control of the water temperature of cooling tower
But the switching of tower inner blower and spray equipment；
It is described according to the water temperature of cooling tower change control cooling tower inner blower and spray equipment switching method include with
Lower step：
Step 1：Detect cooling tower inflow temperature；If it is higher than preset temperature T1, then blower fan is started, and perform step 2；
Step 2：Detect cooling tower leaving water temperature；If it is less than preset temperature T2, then blower fan is closed, and perform step 1；If
It is in preset temperature T2With preset temperature T3Between, then keep blower fan unlatching and linear regulation blower fan is transported between 25Hz~50Hz
Line frequency；If it is higher than preset temperature T3, then feeding spraying pump is started, and perform step 3；
Step 3：Detect spray coolant-temperature gage and cooling tower leaving water temperature in collecting-tank；If spray coolant-temperature gage is higher than in collecting-tank
Preset temperature T4, then it is on the rocks into shower water collecting-tank to spray coolant-temperature gage to reduce；If cooling tower leaving water temperature is less than default temperature
Spend T5, then feeding spraying pump is closed, and perform step 2；
It is described that the operation/cutting method of oil water heat exchange device is comprised the steps of according to oil temperature change control in transformer：
When Transformer Winding temperature is higher than preset temperature B1Or oil surface temperature is higher than preset temperature B2When, increase a profit
Heat exchanger is run.
Above-mentioned transformer forces the control method of hydrologic cycle cooling system, wherein, in step 3, close feeding spraying pump
Afterwards, detection spray water conductivity is first carried out before step 2 is performed；If surveying spray water conductivity is higher than 500 μ S/cm, beat
Drive the blowoff valve of shower water collecting-tank.
Above-mentioned transformer forces the control method of hydrologic cycle cooling system, wherein, the T1Around cooling tower
+ 15 DEG C of environment temperature, the T2Not higher than T1- 10 DEG C, the T3Not higher than+30 DEG C of cooling tower ambient temperature, the T4It is situated between
Between 35-40 DEG C, the T5Not higher than+25 DEG C of cooling tower ambient temperature.
Relative to prior art, the invention has the advantages that：
(1) present invention is used as cooling and set by pasta heat indicator on transformer and winding temperature indicating gage institute temperature displaying function
The foundation of standby switching, it can effectively reflect that temperature change avoids additional temperature measuring equipment again in transformer, reduces control system hardware
Cost.
(2) the preset temperature T in control method of the present invention1、T2、T3、T4And T5Setting principle preferentially to be dissipated using blower fan
Heat, shorten the operation burden of spray equipment, so as to reduce the water consumption of cooling tower and operating cost, improve cooling system efficiency.
(3) without largely be calculated in control method logic simplicity of the present invention, control process, therefore control response speed
Hurry up, control system it is easy to operate, be suitably applied the operation of actual transformer station.
Brief description of the drawings
Fig. 1 is that transformer of the present invention forces hydrologic cycle cooling system location map；
Fig. 2 is cooling tower of the present invention and water replanishing device structural representation；
Fig. 3 is signal point position distribution schematic diagram of the present invention；
Fig. 4 is the flow chart that cooling column water temperature controls in control method of the present invention；
Fig. 5 is the particular flow sheet that cooling column water temperature controls in control method of the present invention.
Embodiment
Below in conjunction with accompanying drawing, by specific embodiment, the invention will be further described, and these embodiments are merely to illustrate
The present invention, it is not limiting the scope of the invention.
As shown in Figure 1, Figure 2 and Figure 3, the invention provides a kind of transformer to force hydrologic cycle cooling system, including：
The cooling device being connected with transformer 31, it is used for using the oil in the oil pipe of cooling water cooling transformer 31；
The water replanishing device being connected with cooling device, it is used for the supplement that cooling water is carried out to the cooling device, and,
The signal supervisory instrument being arranged on cooling device, water replanishing device and transformer, its be used to detecting cooling device and
Oil temperature in water temperature in water replanishing device, and transformer 31；
The cooling device includes a cooling tower 1 and more oil water heat exchange devices 2 being arranged in transformer 31；
Oil pipe in the oil water heat exchange device 2 is connected with the oil pipe in transformer 31, the water pipe in the oil water heat exchange device 2
It is connected with cooling tower 1.
The cooling tower 1 includes：
It is arranged on the blower fan 3 at the top of cooling tower 1；
The cooling coil 5 being arranged in cooling tower 1, it is connected with the water pipe of oil water heat exchange device 2；
The spray equipment being arranged in cooling tower 1, it is used to cool down the cooling water in cooling coil 5；
It is arranged on the shower water collecting-tank 6 of the bottom of cooling tower 1；
The shower water collecting-tank 6 is connected with spray equipment by feeding spraying pump 7；
Blowoff valve is provided with the shower water collecting-tank 6；
Cooling water circulation water pump 8 and cooling water flow regulation are provided between the oil water heat exchange device 2 and cooling coil 5
Valve.
The spray equipment includes being arranged on row's spray spout 4 above cooling coil and is arranged on below cooling coil
Low pressure mist-generating nozzle 29.
The water replanishing device includes：
Extra feed tank 9；
The voltage stabilization water filling device 10 that arrival end is connected with extra feed tank 9, its port of export respectively with cooling coil 5 and shower water
Collecting-tank 6 connects；
Cooling water replenishment valve 11 is provided between the voltage stabilization water filling device 10 and cooling coil 5；
Collecting-tank water compensating valve 12 is provided between the voltage stabilization water filling device 10 and shower water collecting-tank 6；
The arrival end of the extra feed tank 9 is also connected with extra feed tank circulating pump 13 by extra feed tank water compensating valve 14.
The signal monitoring device includes：
The extra feed tank liquid level sensor 15 being arranged on extra feed tank 9；
The supplementing water pressure sensor 16 being arranged on the export pipeline of voltage stabilization water filling device 10；
Cooling water water pillow liquid level sensor 17, the cooling tower inflow temperature being arranged on the inlet pipeline of cooling coil 5 sense
Device 18, cooling tower flow of inlet water sensor 19 and cooling tower intake pressure sensor 20；
Cooling tower leaving water temperature sensors 21, the cooling tower water flow being arranged on the outlet pipeline of cooling coil 5 sense
Device 22 and cooling tower discharge pressure sensor 23；
The oil surface temperature indicating gage and winding temperature indicating gage being arranged on transformer 31, and,
Collecting-tank liquid level gauge 24, shower water thermometer 25, the detection spray water conductivity being arranged in shower water collecting-tank 6
Conductivity meter 30.
The system also includes control device, and it includes：The fan control box 26 being connected with blower fan 3, it is used to control blower fan 3
Operation；The feeding spraying pump control cabinet 27 being connected with feeding spraying pump 7, it is used for the operation for controlling feeding spraying pump 7, and, with supply
The extra feed tank circulating pump control cabinet 28 that water tank circulating pump 13 connects, it is used for the operation for controlling extra feed tank circulating pump 13.
The more oil water heat exchange devices 2 include N platforms operation oil water heat exchange device 2 and 2 standby oil water heat exchange devices 2, the change
When the voltage class of depressor 31 is more than 220kV, N values are 2, when the voltage class of transformer 31 is less than or equal to 220kV, N values
For 1.
As shown in figure 4, present invention also offers the control method that a kind of above-mentioned transformer 31 forces hydrologic cycle cooling system,
Comprise the steps of：Switching according to oil temperature change control in transformer 31 to oil water heat exchange device 2, while according to cooling tower 1
The switching of the water temperature change control inner blower 3 of cooling tower 1 and spray equipment；
The method of the switching for changing the control inner blower 3 of cooling tower 2 and spray equipment according to the water temperature of cooling tower 1 includes
Following steps：
Step 1：Detect cooling tower inflow temperature；If it is higher than preset temperature T1, then blower fan 3 is started, and perform step 2；
Step 2：Detect cooling tower leaving water temperature；If it is less than preset temperature T2, then blower fan 3 is closed, and perform step 1；
If it is in preset temperature T2With preset temperature T3Between, then keep blower fan 3 to open and the linear regulation blower fan between 25Hz~50Hz
3 running frequencies；If it is higher than preset temperature T3, then feeding spraying pump is started, and perform step 3；
Step 3：Detect spray coolant-temperature gage and cooling tower leaving water temperature in collecting-tank；If spray coolant-temperature gage is higher than in collecting-tank
Preset temperature T4, then it is on the rocks into shower water collecting-tank 6 to spray coolant-temperature gage to reduce；If cooling tower leaving water temperature is less than default temperature
Spend T5, then feeding spraying pump 7 is closed, and perform step 2；
It is described that the operation/cutting method of oil water heat exchange device 2 is comprised the steps of according to oil temperature change control in transformer 31：
When the winding temperature of transformer 31 is higher than preset temperature B1Or oil surface temperature is higher than preset temperature B2When, increase an oil
Water- to-water heat exchanger 2 is run.Preferably, when the winding temperature of transformer 31 is higher than 80 DEG C or oil surface temperature is higher than 55 DEG C, one is increased
Oil water heat exchange device 2 is run.
In step 3, after closing feeding spraying pump 7, detection spray water conductivity is first carried out before step 2 is performed；If institute
Survey spray water conductivity and be higher than 500 μ S/cm, then open the blowoff valve of shower water collecting-tank 6.
The T1Not higher than+15 DEG C of 1 ambient temperature of cooling tower, the T2Not higher than T1- 10 DEG C, the T3It is not higher than
+ 30 DEG C of 1 ambient temperature of cooling tower, the T4Between 35-40 DEG C, the T5Not higher than the ambient temperature of cooling tower 1
+25℃。
Hydrologic cycle cooling system and its controlling party are forced with the transformer 31 provisioned in certain 550kV main transformer of transformer substation 31
Exemplified by method, every main transformer 31 is equipped with 4 oil water heat exchange devices 2, keeps 2 operation oil water heat exchange devices 2 to put into during normal operation
Operation, 1 standby oil water heat exchange device 2 is put into when winding temperature is higher than 80 DEG C or oil surface temperature is higher than 55 DEG C；When operation profit
1 standby oil water heat exchange device 2 is put into during 2 failure of heat exchanger.
As shown in figure 5, before cooling tower 1 puts into operation, start voltage stabilizing moisturizing and detect supplementing water pressure P0 whether P0≤set
Definite value, if so, then sending the low alarm of supplementing water pressure；If it is not, then detect water supply tank liquid level；When water supply tank liquid level is not higher than minimum liquid
During position, open extra feed tank water compensating valve 14 and carry out moisturizing, when reaching minimum liquid level, close extra feed tank water compensating valve 14.Moisturizing
Water cooling tower 1 enters running status after pressure and water supply tank liquid level meet condition.
The preset temperature T of method for controlling cooling system1、T2、T3、T4And T5It is respectively set as 36 DEG C, 26 DEG C, 50 DEG C, 38 DEG C
With 45 DEG C.
When the inflow temperature of cooling tower 1 is higher than 36 DEG C, starts blower fan 3 in cooling tower 1, detect the exit water temperature of cooling tower 1.When
The leaving water temperature of cooling tower 1 closes blower fan 3 when being less than 26 DEG C；When the leaving water temperature of cooling tower 1 is between 26 DEG C and 50 DEG C, in 25Hz
The frequency of linear regulation blower fan 3 between~50Hz.When the leaving water temperature of cooling tower 1 rises to over 50 DEG C, start cooling tower 1 and spray
Device, to strengthen radiating effect.Whether the water level for detecting shower water collecting-tank 6 first is in high level state, in this way, then directly
Open feeding spraying pump 7；If not, feeding spraying pump 7 is opened after moisturizing to high fluid level condition.Continue to monitor the liquid of shower water collecting-tank 6
Position state, shower water water temperature and cooling water water pillow liquid level and the leaving water temperature of cooling tower 1, when the liquid level of shower water collecting-tank 6 is down to
Spray pump is closed during low liquid level state, feeding spraying pump 7 is reopened after opening moisturizing to the high fluid level condition of collecting-tank water compensating valve 12；
It is on the rocks to reduce shower water water temperature into shower water collecting-tank 6 when water temperature is higher than 38 DEG C；When cooling water water pillow liquid level is less than most
Cooling water replenishment valve 11 is opened during low liquid level；Feeding spraying pump 7 is closed when the leaving water temperature of water cooling tower 1 is less than 45 DEG C, and is detected
The electrical conductivity of shower water in shower water collecting-tank 6.When electrical conductivity is higher than 500 μ S/cm, collecting-tank blowoff valve, blowoff valve are opened
Time-delay closing, delay time are adjustable.Return to the detection leaving water temperature of water cooling tower 1, circular flow.
When being adjusted to maximum air quantity and shower water work in the converter plant of 1 blower fan of cooling tower 3 run, cooling tower
1 inflow temperature it is still high (>It is 65 DEG C, adjustable) or the leaving water temperature of cooling tower 1 still raise (>It is 55 DEG C, adjustable), then aid in controlling by transformer station
System processed sends the signal (be delayed 300s, adjustable) that increase cooling tower 1 runs number of units, opens the off-duty cooling tower in the system
1；When the inflow temperature of cooling tower 1 reduce (<It is 52 DEG C, adjustable) or the reduction of the leaving water temperature of cooling tower 1 (<It is 42 DEG C, adjustable), then by power transformation
Supplementary controlled system of standing sends the signal for reducing the number of units of cooling tower 1, closes unnecessary water cooling tower 1 (be delayed 300s, adjustable).When
One cooling tower 1 breaks down (blower fan 3, valve, baffle plate), closes the flowing water Valve of cooling tower 1, the water cooling tower 1 of stopping transport, and
Open standby water cooling tower 1.
In cooling system running, when there are following abnormal conditions in monitoring signals, cooling system host computer display report
Alert signal：
Fault of water pump everywhere in cooling system；Cooling water circulation water pump 8 exports main-piping pressure and is less than setting value；Cooling tower 1
Water-in and water-out valve, blower fan 3, the blowoff valve failure of shower water collecting-tank 6；The water level of shower water collecting-tank 6 is too high or too low；Shower water
It is too low that main-piping pressure is exported when pump 7 is run；Cooling tower 1 is intake and leaving water temperature is higher than setting value (setting value is adjustable)；Cooling tower 1
Flow of inlet water is too low；Spray water conductivity in shower water collecting-tank 6 is too high etc..
In summary, the present invention is used as by pasta heat indicator on transformer and winding temperature indicating gage institute temperature displaying function
The foundation of cooling device switching, it can effectively reflect that temperature change avoids additional temperature measuring equipment again in transformer, reduces control system
System hardware cost.Preset temperature T in control method of the present invention1、T2、T3、T4And T5Setting principle preferentially to be dissipated using blower fan
Heat, shorten the operation burden of spray equipment, so as to reduce the water consumption of cooling tower and operating cost, improve cooling system efficiency.
Control method logic of the present invention is concise, need not largely be calculated in control process, therefore control response speed is fast, control system
It is easy to operate, it is suitably applied the operation of actual transformer 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 (9)
1. a kind of transformer forces hydrologic cycle cooling system, it is characterised in that including：
The cooling device being connected with transformer, it is used for using the oil in cooling water cooling transformer oil pipe；
The water replanishing device being connected with cooling device, it is used for the supplement that cooling water is carried out to the cooling device, and,
The signal supervisory instrument being arranged on cooling device, water replanishing device and transformer, it is used to detect cooling device and moisturizing
Water temperature in device, and the oil temperature in transformer；
The cooling device includes a cooling tower and more oil water heat exchange devices being arranged in transformer；
Oil pipe in oil pipe and transformer in the oil water heat exchange device connects, water pipe and cooling tower in the oil water heat exchange device
Connection.
2. transformer as claimed in claim 1 forces hydrologic cycle cooling system, it is characterised in that the cooling tower includes：
The blower fan being arranged at the top of cooling tower；
The cooling coil being arranged in cooling tower, it is connected with the water pipe of oil water heat exchange device；
The spray equipment being arranged in cooling tower, it is used to cool down the cooling water in cooling coil；
It is arranged on the shower water collecting-tank of cooling tower bottom；
The shower water collecting-tank is connected with spray equipment by feeding spraying pump.
3. transformer as claimed in claim 2 forces hydrologic cycle cooling system, it is characterised in that the spray equipment includes setting
Put row's spray spout above cooling coil and the low pressure mist-generating nozzle being arranged on below cooling coil.
4. transformer as claimed in claim 2 forces hydrologic cycle cooling system, it is characterised in that on the shower water collecting-tank
It is provided with blowoff valve.
5. transformer as claimed in claim 2 forces hydrologic cycle cooling system, it is characterised in that the water replanishing device includes：
Extra feed tank, and,
The voltage stabilization water filling device that arrival end is connected with extra feed tank, its port of export connect with cooling coil and shower water collecting-tank respectively
Connect.
6. transformer as claimed in claim 2 forces hydrologic cycle cooling system, it is characterised in that the signal supervisory instrument bag
Include：
The cooling tower inflow temperature sensor being arranged on cooling coil inlet pipeline；
The cooling tower leaving water temperature sensors being arranged on cooling coil outlet pipeline；
Oil surface temperature indicating gage and winding temperature indicating gage on the transformer is set, and,
The shower water thermometer and the conductivity meter of detection spray water conductivity being arranged in shower water collecting-tank.
7. the transformer in a kind of 1-6 such as claim as described in any one forces the control method of hydrologic cycle cooling system, its
It is characterised by, comprises the steps of：Switching according to oil temperature change control in transformer to oil water heat exchange device, while according to cooling
The water temperature change control cooling tower inner blower of tower and the switching of spray equipment；
The method of the switching for changing control cooling tower inner blower and spray equipment according to the water temperature of cooling tower includes following step
Suddenly：
Step 1：Detect cooling tower inflow temperature；If it is higher than preset temperature T1, then blower fan is started, and perform step 2；
Step 2：Detect cooling tower leaving water temperature；If it is less than preset temperature T2, then blower fan is closed, and perform step 1；If its
Preset temperature T2With preset temperature T3Between, then keep blower fan unlatching and the linear regulation fan operation frequency between 25Hz~50Hz
Rate；If it is higher than preset temperature T3, then feeding spraying pump is started, and perform step 3；
Step 3：Detect spray coolant-temperature gage and cooling tower leaving water temperature in collecting-tank；If spray coolant-temperature gage is higher than default in collecting-tank
Temperature T4, then it is on the rocks into shower water collecting-tank to spray coolant-temperature gage to reduce；If cooling tower leaving water temperature is less than preset temperature T5,
Feeding spraying pump is then closed, and performs step 2；
It is described that the operation/cutting method of oil water heat exchange device is comprised the steps of according to oil temperature change control in transformer：
When Transformer Winding temperature is higher than preset temperature B1Or oil surface temperature is higher than preset temperature B2When, increase an oil water heat exchange
Device is run.
8. transformer as claimed in claim 7 forces the control method of hydrologic cycle cooling system, it is characterised in that in step 3
In, after closing feeding spraying pump, detection spray water conductivity is first carried out before step 2 is performed；If it is high to survey spray water conductivity
In 500 μ S/cm, then opening shower water collecting-tank blowoff valve.
9. transformer as claimed in claim 7 forces the control method of hydrologic cycle cooling system, it is characterised in that the T1No
Higher than+15 DEG C of cooling tower ambient temperature, the T2Not higher than T1- 10 DEG C, the T3Not higher than cooling tower ambient temperature
+ 30 DEG C, the T4Between 35-40 DEG C, the T5Not higher than+25 DEG C of cooling tower ambient temperature.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817843A (en) * | 2017-11-27 | 2018-03-20 | 国网内蒙古东部电力有限公司 | The control method and control system of the cooling system of forced oil-circulation air-cooled transformer |
| CN108106453A (en) * | 2018-01-30 | 2018-06-01 | 荆州市宏达生物科技股份有限公司 | A kind of aerating and cooling tower control device |
| CN109213012A (en) * | 2018-09-11 | 2019-01-15 | 广东瑞智电力科技有限公司 | A kind of offshore wind farm boosting dry-type transformer control system |
| CN110035638A (en) * | 2019-04-25 | 2019-07-19 | 广东海悟科技有限公司 | Reducing energy consumption module, improved computer-room air conditioning system and control method |
| CN110957109A (en) * | 2019-11-25 | 2020-04-03 | 国网四川省电力公司广安供电公司 | Oil-immersed self-cooling transformer cooling system |
| CN113380501A (en) * | 2021-06-03 | 2021-09-10 | 国网江苏省电力有限公司南通供电分公司 | Transformer temperature control system and control method thereof |
| CN113606839A (en) * | 2021-07-19 | 2021-11-05 | 宁波沃弗圣龙环境技术有限公司 | Low-temperature granary of single-cooling water-cooling air conditioning unit and control method |
| CN118394016A (en) * | 2024-06-25 | 2024-07-26 | 深圳市兄弟制冰系统有限公司 | Intelligent monitoring system and method for cabin-mounted refrigeration replenishing device |
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| CN203179660U (en) * | 2013-03-29 | 2013-09-04 | 国家电网公司 | Circulation cooling system for transformer and reactor |
| CN203240923U (en) * | 2013-03-30 | 2013-10-16 | 国家电网公司 | Air-cooling spray evaporation cooling tower |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817843A (en) * | 2017-11-27 | 2018-03-20 | 国网内蒙古东部电力有限公司 | The control method and control system of the cooling system of forced oil-circulation air-cooled transformer |
| CN108106453A (en) * | 2018-01-30 | 2018-06-01 | 荆州市宏达生物科技股份有限公司 | A kind of aerating and cooling tower control device |
| CN108106453B (en) * | 2018-01-30 | 2023-11-17 | 荆州市宏达生物科技股份有限公司 | Ventilation cooling tower controlling means |
| CN109213012A (en) * | 2018-09-11 | 2019-01-15 | 广东瑞智电力科技有限公司 | A kind of offshore wind farm boosting dry-type transformer control system |
| CN109213012B (en) * | 2018-09-11 | 2021-02-09 | 广东明阳电气股份有限公司 | Offshore wind power boost dry-type transformer control system |
| CN110035638A (en) * | 2019-04-25 | 2019-07-19 | 广东海悟科技有限公司 | Reducing energy consumption module, improved computer-room air conditioning system and control method |
| CN110957109A (en) * | 2019-11-25 | 2020-04-03 | 国网四川省电力公司广安供电公司 | Oil-immersed self-cooling transformer cooling system |
| CN113380501A (en) * | 2021-06-03 | 2021-09-10 | 国网江苏省电力有限公司南通供电分公司 | Transformer temperature control system and control method thereof |
| CN113380501B (en) * | 2021-06-03 | 2022-08-19 | 国网江苏省电力有限公司南通供电分公司 | Transformer temperature control system and control method thereof |
| CN113606839A (en) * | 2021-07-19 | 2021-11-05 | 宁波沃弗圣龙环境技术有限公司 | Low-temperature granary of single-cooling water-cooling air conditioning unit and control method |
| CN118394016A (en) * | 2024-06-25 | 2024-07-26 | 深圳市兄弟制冰系统有限公司 | Intelligent monitoring system and method for cabin-mounted refrigeration replenishing device |
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