CN104183362A - Main transformer radiator cooling device with intelligent frequency conversion function and use method thereof - Google Patents
Main transformer radiator cooling device with intelligent frequency conversion function and use method thereof Download PDFInfo
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- CN104183362A CN104183362A CN201410470661.0A CN201410470661A CN104183362A CN 104183362 A CN104183362 A CN 104183362A CN 201410470661 A CN201410470661 A CN 201410470661A CN 104183362 A CN104183362 A CN 104183362A
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- cooling
- main transformer
- radiator
- oil
- inverter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention relates to a main transformer radiator cooling device with an intelligent frequency conversion function and a use method thereof. An oil flow cooling circulation system is arranged in a main transformer and used for cooling windings, transformer oil in the oil flow cooling circulation system flows into a radiator to be cooled through an oil outlet valve on the upper portion of the main transformer, flows out from the radiator through an oil inlet valve on the lower portion of the main transformer and then flows into the main transformer, the radiator is shielded in a cavity of a cooling cover and tightly sealed through the cooling cover, and refrigerant media flow in the cooling cover circularly and are used for cooling the transformer oil flowing in the radiator; the cooling cover is provided with a refrigerant inlet valve, a refrigerant outlet valve is arranged on the upper portion of the cooling cover and connected with an inlet of a frequency conversion refrigeration compressor, an outlet of the frequency conversion refrigeration compressor is connected with an inlet of a condenser, an outlet of the condenser is connected with a throttling valve inlet, and a throttling valve outlet is connected with a refrigerant inlet in the lower portion of the cooling cover.
Description
Technical field
The present invention relates to main transformer radiator cold radiator cooler and the using method of intelligent frequency-conversion function.
Background technology
Main transformer is in running, under the effect of electricity and magnetic, its winding and iron core can generate heat, now as not in time heat taken away, by causing main transformer to break down, even burn the serious accident of blast, the type of cooling of main transformer is that the transformer oil being flowed by main transformer inner loop carrys out cooling winding, after cooling winding, self heated transformer oil need carry out heat exchange by radiator and enters in main transformer after cooling again winding is carried out to circulating cooling, the type of cooling of tradition main transformer radiator is to be dried by fan, the modes such as natural heat dissipation, air at these two kinds of type of cooling environment for use temperature is as refrigerant, cooling effectiveness is very low, the scope that cools is very little, be subject to such environmental effects large, often cause main transformer copper iron loss large, overload and Short Circuit withstand current capacity are little, the shortcomings such as the short and safe class of insulation life is not enough.
Summary of the invention
The object of the invention is for above weak point, provide and had the main transformer of intelligent frequency-conversion function radiator cold radiator cooler and using method, can take away safe, reliable, efficient, economically the heat energy that main transformer in service produces, be not subject to ambient temperature and climatic influences, can greatly reduce the copper iron loss of main transformer, greatly improve main transformer overload capacity and Short Circuit withstand current capacity, increase the service life, the safety of powerful guarantee electric power system, economical operation.
The scheme that technical solution problem of the present invention adopts is, a kind of main transformer radiator cold radiator cooler that has intelligent frequency-conversion function, comprise cooling dome, Refrigerating Compressor with Inverter, condenser, choke valve, oil stream cooling recirculation system, temperature sensor, control module, described oil stream cooling recirculation system be arranged in main transformer for carrying out cooling to winding, it is cooling that the delivery valve of transformer oil in described oil stream cooling recirculation system by main transformer top enters radiator, inlet valve by main transformer bottom flows out and enters in main transformer from radiator, described cooling dome by radiator cover in cooling dome cavity, and sealing is tight, in described cooling dome, circulated coolant media, to transformer oil mobile in radiator, carry out cooling, described cooling dome is provided with refrigerant inlet valve, on cooling dome top, be provided with refrigerant exit valve, described refrigerant exit valve connects the import of Refrigerating Compressor with Inverter, the outlet of described Refrigerating Compressor with Inverter connects the import of condenser, the outlet of described condenser connects choke valve import, choke valve outlet connects the refrigerant import of cooling dome bottom, described temperature sensor is arranged on the top of main transformer, described control module and temperature sensor and Refrigerating Compressor with Inverter are electrically connected.
Further, described control module can be PLC or other computer processor.
Further, described cooling dome is made by insulating material.
Further, described coolant media is SF
6medium.
Further, described condenser is air-cooled or water cooled condenser.
A main transformer radiator cold radiator cooler using method that has intelligent frequency-conversion function, concrete operation step is as follows:
(1) open the inlet valve that enters coolant media of cooling dome bottom and the outlet valve that goes out coolant media on cooling dome top; (2) open choke valve; (3) open Refrigerating Compressor with Inverter, coolant media starts circulation; (4) open cold condenser cooling blower, is opposite to the interior mobile transformer oil of main transformer radiator in cooling dome and carries out circulating cooling; 5) open control module, control module is according to the online temperature value of oil temperature in the main transformer of temperature sensor measurement transmission, according to the temperature approach setting in advance, when oil temperature is above over the set point temperature difference, automatically start Refrigerating Compressor with Inverter work, oil temperature is higher, control module is controlled Refrigerating Compressor with Inverter frequency and is raise, increase the refrigerating capacity of refrigerant compressor, vice versa, when oil temperature drops to the set point temperature difference when following, automatically stop Refrigerating Compressor with Inverter work, remain that transformer oil works within the scope of optimum chilling temperature.
Compared with prior art, the present invention has following beneficial effect: can be according to oil temperature in main transformer, by nonstick system of control cold compressor electric machine frequency, carry out exerting oneself of Based Intelligent Control Refrigerating Compressor with Inverter, greatly improve refrigerating efficiency, avoid the urgency of refrigerant compressor to stop suddenly opening and reducing the drawbacks such as noise, efficiently, energy-conservation, environmental protection, the present invention has safe and reliable, high-efficiency environment friendly, overall operation economic dispatch huge advantage, remain the optimum temperature difference that main transformer winding and oil flow, can greatly reduce the copper of operation main transformer, iron loss, improve overload and the Short Circuit withstand current capacity of main transformer, extend main transformer useful life, powerful guarantee dry-type transformer safe operation more.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, patent of the present invention is further illustrated.
Fig. 1 is the main transformer radiator scheme of installation of the embodiment of the present invention;
Fig. 2 is the cooling cover scheme of installation of the main transformer radiator of the embodiment of the present invention;
Fig. 3 is that the cooling cover of the main transformer radiator of the embodiment of the present invention is installed schematic side view;
Fig. 4 is the A-A cutaway view of Fig. 3;
Fig. 5 is the main transformer radiator cold radiator cooler scheme of installation of the embodiment of the present invention;
Fig. 6 is the cooling device workflow schematic diagram of the main transformer radiator of the embodiment of the present invention;
Fig. 7 is the cooling device cooling dome side-looking workflow schematic diagram of the main transformer radiator of the embodiment of the present invention;
Fig. 8 is the control module Automatic Control Theory block diagram of the embodiment of the present invention.
In figure: 1-inlet valve, 2-cooling dome, 3-outlet valve, 4-Refrigerating Compressor with Inverter, 5-condenser inlet, 6-condenser, 7-cooling blower, 8-condensator outlet, 9-choke valve, 10-temperature sensor, 11-inlet valve, 12-radiator, 13-delivery valve; 14-winding; 15-transformer oil; 16-main transformer; 17-coolant media.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
As shown in Fig. 1～8, a kind of main transformer radiator cold radiator cooler that has intelligent frequency-conversion function, comprise cooling dome 2, Refrigerating Compressor with Inverter 4, condenser 6, choke valve 9, oil stream cooling recirculation system, temperature sensor 10, control module, described oil stream cooling recirculation system be arranged in main transformer 16 for carrying out cooling to winding 14, the interior mobile transformer oil 15 of main transformer 16 to main transformer 16 interior winding 14 carry out cooling after, self is heated, the delivery valve 13 of heat transformer oil 15 after heating in described oil stream cooling recirculation system through main transformer 16 tops enters radiator, heat transformer oil 15 carries out heat exchange by radiator 12 walls and extraneous refrigerant, cold transformer oil 15 outflow radiators 12 after being cooled enter in main transformer 16 by the inlet valve 11 of main transformer 16 bottoms, carry out the cool cycles of next round, described cooling dome 2 covers in radiator 12 in cooling dome cavity, and sealing is tight, in described cooling dome 2, circulated coolant media 17, to the interior mobile transformer oil 15 of radiator 12, carry out cooling, by being placed in interior mobile transformer oil 15 heats of the interior main transformer radiator 12 of cooling dome 2, take away, described cooling dome 2 is provided with refrigerant inlet valve 1, on cooling dome top, be provided with refrigerant exit valve 3, described refrigerant exit valve 3 connects the import of Refrigerating Compressor with Inverter 4, the outlet of described Refrigerating Compressor with Inverter 4 connects condenser inlet 5, described condensator outlet 8 connects choke valve 9 imports, choke valve 9 outlets connect the refrigerant import of cooling dome 2 bottoms, described temperature sensor 10 is arranged on the top of main transformer 16, described control module and temperature sensor 10 and Refrigerating Compressor with Inverter 4 are electrically connected, the interior oil temperature of temperature sensor 10 on-line measurement main transformers also passes to control module by real-time oil temperature, the online temperature value that control module is measured and transmitted according to temperature sensor 10, according to the temperature approach setting in advance, automatically control the work of Refrigerating Compressor with Inverter 4, when the interior oil temperature of main transformer 16 is above over the set point temperature difference, automatically start Refrigerating Compressor with Inverter 4 work, oil temperature is higher, control module is controlled Refrigerating Compressor with Inverter 4 frequencies and is raise, increase the refrigerating capacity of refrigerant compressor 4, vice versa, when the interior oil temperature of main transformer 16 drops to the set point temperature difference when following, automatically control and stop Refrigerating Compressor with Inverter 4 work, remain that the interior oil temperature of main transformer 16 works within the scope of optimum chilling temperature, greatly improve refrigerating efficiency.
In the present embodiment, described control module can be PLC or other computer processor.
In the present embodiment, described cooling dome 2 is made by insulating material, or other applicable material is made.
In the present embodiment, described coolant media 17 is SF
6medium can be also other coolant media that has insulation, breath combustion and have higher thermal enthalpy.
In the present embodiment, described condenser 6 is air-cooled or water cooled condenser.
A main transformer radiator cold radiator cooler using method that has intelligent frequency-conversion function, concrete operation step is as follows:
(1) open the inlet valve that enters coolant media 17 1 of cooling dome 2 bottoms and the outlet valve that goes out coolant media 3 on cooling dome 2 tops, (2) open choke valve 9, (3) open Refrigerating Compressor with Inverter 4, coolant media 17 starts circulation, (4) open cold condenser cooling blower 7, is opposite to the interior mobile transformer oil 15 of the interior main transformer radiator 12 of cooling dome 2 and carries out circulating cooling, 5) open control module, the online temperature value of the interior oil temperature of main transformer 16 that control module is measured according to temperature sensor 10 and transmitted, according to the temperature approach setting in advance, when oil temperature is above over the set point temperature difference, automatically start Refrigerating Compressor with Inverter 4 work, oil temperature is higher, control module is controlled Refrigerating Compressor with Inverter 4 frequencies and is raise, increase the refrigerating capacity of Refrigerating Compressor with Inverter 4, vice versa, when oil temperature drops to the set point temperature difference when following, automatically stop Refrigerating Compressor with Inverter 4 work, remain that transformer oil works within the scope of optimum chilling temperature.
Specific implementation process:
After the cooling main transformer winding 14 of transformer oil 15, self be heated, because of deep fat density low, so heat transformer oil rises to main transformer top, and flow out main transformer delivery valve 13, enter main transformer radiator 12, heat transformer oil, in radiator 12, is enclosed in radiator refrigerant institute around by radiator wall cooling; Open main transformer inlet valve 11, in radiator by the cooled transformer oil of refrigerant, because cold oil density ratio deep fat density is large, therefore the oily stream in radiator is to flow to radiator bottom from radiator top, flow out after radiator outlet, the inlet valve through main transformer bottom enters and in main transformer body, carries out cool cycles.
The coolant media of cooling dome 2 interior circulations is taken away the heat that is placed in the interior mobile transformer oil of the interior main transformer radiator 12 of cooling dome 2, cooling transformer oil 15, coolant media 17 self evaporation endothermic becomes low pressure refrigerant gas, low pressure refrigerant gas after heat absorption is gone out from cooling dome 2 top refrigerant exit valves 3, by Refrigerating Compressor with Inverter 4 imports, sucked, in Refrigerating Compressor with Inverter, be compressed into the coolant media gas of high pressure-temperature, this HTHP cold media gas extrudes from Refrigerating Compressor with Inverter 4 outlets, enter condenser 6 to condenser inlet 5, HTHP cold media gas is condensed into high temperature refrigerant liquid in condenser 6, condenser 6 can be air cooling way, also can be water-cooling pattern, the present invention be take and air-cooledly described as example, after high temperature refrigerant liquid discharge condensator outlet 8, flow to choke valve 9, coolant media enters in cooling dome 2 by cooling dome refrigerant inlet valve 1 after by choke valve 9 decompression throttlings, cooling medium liquid body through decompression after throttling divides and is evaporated to gas, cooling medium liquid evacuator body can absorb amount of heat, thereby make that coolant media is cooling to be entered in cooling dome 2, owing to entering the sudden enlargement of cooling dome volume, make cooling medium liquid evacuator body absorb amount of heat, being opposite to the wherein interior mobile transformer oil of main transformer radiator 12 carries out cooling, low pressure refrigerant gas after heat absorption evaporation is gone out and is sucked the kind of refrigeration cycle of carrying out next round by Refrigerating Compressor with Inverter 4 by cooling dome top outlet valve 3 again.
The online temperature value that control module is measured and transmitted according to temperature sensor 10, according to the temperature approach setting in advance, when in main transformer, oil temperature is above over the set point temperature difference, automatically start Refrigerating Compressor with Inverter 4 work, in main transformer, oil temperature reaches the set point temperature difference when following, automatically stop Refrigerating Compressor with Inverter 4 work, setting startup and stopping in the temperature range of refrigerant compressor work, in main transformer, oil temperature is higher, the electric machine frequency that control module is controlled Refrigerating Compressor with Inverter 4 automatically raises, to increase the refrigerating capacity of refrigerant compressor 4, vice versa, remain that in main transformer, oil temperature remains on work within the scope of optimum chilling temperature, and greatly improve refrigerating efficiency, avoid the urgency of refrigerant compressor 4 to stop suddenly opening and reducing the drawbacks such as noise, energy-conserving and environment-protective.
Above-listed preferred embodiment; the object, technical solutions and advantages of the present invention are further described; institute is understood that; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a main transformer radiator cold radiator cooler that has intelligent frequency-conversion function, comprise cooling dome, can be automatically controlled the Refrigerating Compressor with Inverter that FREQUENCY CONTROL work is exerted oneself, condenser, choke valve, oil stream cooling recirculation system, temperature sensor, control module, it is characterized in that: described oil stream cooling recirculation system be arranged in main transformer for carrying out cooling to winding, it is cooling that the delivery valve of transformer oil in described oil stream cooling recirculation system by main transformer top enters radiator, inlet valve by main transformer bottom flows out and enters in main transformer from radiator, described cooling dome by radiator cover in cooling dome cavity, and sealing is tight, in described cooling dome, circulated coolant media, to transformer oil mobile in radiator, carry out cooling, described cooling dome is provided with refrigerant inlet valve, on cooling dome top, be provided with refrigerant exit valve, described refrigerant exit valve connects the import of Refrigerating Compressor with Inverter, the outlet of described Refrigerating Compressor with Inverter connects the import of condenser, the outlet of described condenser connects choke valve import, choke valve outlet connects the refrigerant import of cooling dome bottom, described temperature sensor is arranged on the top of main transformer, described control module and temperature sensor and Refrigerating Compressor with Inverter are electrically connected.
2. a kind of main transformer radiator cold radiator cooler that has intelligent frequency-conversion function according to claim 1, is characterized in that: described control module can be PLC or other computer processor.
3. a kind of main transformer radiator cold radiator cooler that has intelligent frequency-conversion function according to claim 1, is characterized in that: described cooling dome is made by insulating material.
4. a kind of main transformer radiator cold radiator cooler that has intelligent frequency-conversion function according to claim 1, is characterized in that: described coolant media is SF
6medium.
5. a kind of main transformer radiator cold radiator cooler that has intelligent frequency-conversion function according to claim 1, is characterized in that: described condenser is air-cooled or water cooled condenser.
6. a using method that has the main transformer radiator cold radiator cooler of intelligent frequency-conversion function, concrete operation step is as follows:
1) open the inlet valve that enters coolant media of cooling dome bottom and the outlet valve that goes out coolant media on cooling dome top; 2) open choke valve; 3) open Refrigerating Compressor with Inverter, coolant media starts circulation; 4) open cold condenser cooling blower, is opposite to the interior mobile transformer oil of main transformer radiator in cooling dome and carries out circulating cooling; 5) open control module, control module is according to the online temperature value of oil temperature in the main transformer of temperature sensor measurement transmission, according to the temperature approach setting in advance, when oil temperature is above over the set point temperature difference, automatically start Refrigerating Compressor with Inverter work, oil temperature is higher, control module is controlled Refrigerating Compressor with Inverter frequency and is raise, increase the refrigerating capacity of refrigerant compressor, vice versa, when oil temperature drops to the set point temperature difference when following, automatically stop Refrigerating Compressor with Inverter work, remain that transformer oil works within the scope of optimum chilling temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410470661.0A CN104183362A (en) | 2014-09-16 | 2014-09-16 | Main transformer radiator cooling device with intelligent frequency conversion function and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410470661.0A CN104183362A (en) | 2014-09-16 | 2014-09-16 | Main transformer radiator cooling device with intelligent frequency conversion function and use method thereof |
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| CN104183362A true CN104183362A (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410470661.0A Pending CN104183362A (en) | 2014-09-16 | 2014-09-16 | Main transformer radiator cooling device with intelligent frequency conversion function and use method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169358A (en) * | 2016-08-31 | 2016-11-30 | 江苏恒炫电气有限公司 | A kind of heat dissipating device of transformer and heat radiation intelligence control system thereof |
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| CN102231314A (en) * | 2011-04-14 | 2011-11-02 | 江苏省电力设计院 | Inductive ventilation cooling system of indoor split type transformer |
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| CN103268809A (en) * | 2013-06-06 | 2013-08-28 | 国家电网公司 | Spraying-type evaporation cooling transformer |
| CN104008860A (en) * | 2014-05-08 | 2014-08-27 | 国家电网公司 | Main transformer heat exchanging device with functions of intelligent photovoltaic frequency-conversion heat pump and application method thereof |
| CN204045336U (en) * | 2014-09-16 | 2014-12-24 | 国家电网公司 | There is the main transformer radiator cooling device of intelligent frequency-conversion function |
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2014
- 2014-09-16 CN CN201410470661.0A patent/CN104183362A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1506985A (en) * | 2002-12-11 | 2004-06-23 | 王小平 | Heat radiator for green high-energy transformer |
| CN202042317U (en) * | 2011-03-08 | 2011-11-16 | 江苏盛华电气有限公司 | Sf6 gas transformer |
| CN102231314A (en) * | 2011-04-14 | 2011-11-02 | 江苏省电力设计院 | Inductive ventilation cooling system of indoor split type transformer |
| CN103208349A (en) * | 2013-04-27 | 2013-07-17 | 华北电力大学（保定） | Winding water-cooling gas insulating transformer |
| CN103268810A (en) * | 2013-06-06 | 2013-08-28 | 国家电网公司 | Isolated evaporation cooling transformer |
| CN103268809A (en) * | 2013-06-06 | 2013-08-28 | 国家电网公司 | Spraying-type evaporation cooling transformer |
| CN104008860A (en) * | 2014-05-08 | 2014-08-27 | 国家电网公司 | Main transformer heat exchanging device with functions of intelligent photovoltaic frequency-conversion heat pump and application method thereof |
| CN204045336U (en) * | 2014-09-16 | 2014-12-24 | 国家电网公司 | There is the main transformer radiator cooling device of intelligent frequency-conversion function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169358A (en) * | 2016-08-31 | 2016-11-30 | 江苏恒炫电气有限公司 | A kind of heat dissipating device of transformer and heat radiation intelligence control system thereof |
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Application publication date: 20141203 |