CN104008860A - Main transformer heat exchanging device with functions of intelligent photovoltaic frequency-conversion heat pump and application method thereof - Google Patents
Main transformer heat exchanging device with functions of intelligent photovoltaic frequency-conversion heat pump and application method thereof Download PDFInfo
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- CN104008860A CN104008860A CN201410191278.1A CN201410191278A CN104008860A CN 104008860 A CN104008860 A CN 104008860A CN 201410191278 A CN201410191278 A CN 201410191278A CN 104008860 A CN104008860 A CN 104008860A
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a main transformer heat exchanging device with the functions of an intelligent photovoltaic frequency-conversion heat pump and an application method thereof. The main transformer heat exchanging device comprises a transformer body and a heat exchanging device body which is arranged on one side of the transformer body, wherein transformer oil is placed inside the transformer body. The heat exchanging device body comprises a cooler, an evaporator, a frequency-conversion heat pump compressor and a four-way valve, wherein heat-exchanging media are placed inside the evaporator and the four-way valve enables the heat exchanging media inside the heat exchanging device body to run reversely. A power supply needed by the heat exchanging device body is electrically connected with a power source controller, the power source controller is connected with an energy storage device and the energy storage device is connected with a solar energy receiver through a photoelectric converter. The main transformer heat exchanging device overcomes the defects of a traditional cooling mode, the intelligent photovoltaic frequency-conversion refrigerating function is used in the main transformer heat exchanging device, solar energy is used and converted into electric energy through photovoltaic conversion, and the electric energy is supplied to the main transformer heat exchanging device for supporting work of the device. The main transformer heat exchanging device overcomes the defect that an existing main transformer heat exchanging mode cannot be used for heating a low-load main transformer, hot standby main transformer oil and cold standby main transformer oil in bitter cold seasons in the north, therefore, the mobility of the oil products in the main transformer is prevented from becoming poor, and it is guaranteed that the electrical performance, the insulating strength and the physicochemical property of the oil products are not reduced.
Description
Technical field
The present invention relates to a kind of main transformer heat-exchanger rig and using method with Intelligent photovoltaic frequency conversion heat pump function.
Background technology
Main transformer is in running, due to the effect of electricity and magnetic, its coil and iron core can generate heat, as not in time this heat taken away, to cause main transformer to burn the even serious accident of blast, therefore must come cooling coil and iron core by the transformer oil stream being full of in main transformer, and the heat that transformer oil stream is taken away needs to carry out heat exchange by heat abstractor, cooled cold oil stream enters main transformer body again and carries out cooling.The tradition main transformer type of cooling is mainly three kinds of air blast cooling, natural air cooled and water-cooleds, although water-cooled is economical, efficiency is also high, if if generation cooling water in cooling system is to main transformer Seepage, even minor leakage also will cause serious consequence; Air-cooled because air heat content is low, make main transformer cooling effectiveness low, main transformer, heat sink apparatus are manufactured the shortcomings such as bulky, many by oil mass, operating cost is high, maintenance is large.The main transformer of the cold winter operation in the north, in underload or cold standby, when hot stand-by duty, transformer oil in main transformer, because temperature is low, cause oil viscosity large, be difficult for flowing, dielectric strength declines, when main transformer is now again fast when load up, often having little time to heat oil product flows it, now can cause the catastrophe failure of main transformer coil burnout, therefore need in addition main transformer oil to be heated guarantee safe handling, or in transformer oil, add pour-depressant addition, increase the mobility of oil product, but the chemical group branch of additive is electric to transformer oil, insulation property and physicochemical property have a negative impact, the long-term safe operation that uses threat main transformer.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, provide with main transformer heat-exchanger rig and method with Intelligent photovoltaic frequency conversion heat pump function, can take away safe, reliable, efficient, economically the heat energy that main transformer in service produces, and to heating at the main transformer of north cold area operation, increase oil product mobility, safety, the economical operation of powerful guarantee electric power system main transformer.
Specific embodiment of the invention scheme is: a kind of main transformer heat-exchanger rig with Intelligent photovoltaic frequency conversion heat pump function, comprise that one is built-in with the transformer body of transformer oil and is arranged at the heat-exchanger rig of transformer body one side, described heat-exchanger rig comprises cooler, be built-in with evaporator and the frequency conversion heat pump compressor of heat transferring medium, the sidewall of described transformer body bottom is provided with main transformer delivery valve, the sidewall on transformer body top is provided with main transformer inlet valve, described main transformer delivery valve is connected with the oil-in of base of evaporator sidewall by the road, the oil-out of described evaporator top sidewall is connected with main transformer inlet valve by the road, it is characterized in that, the power supply source that described heat-exchanger rig is required and power-supply controller of electric are electrically connected, described power-supply controller of electric is connected with energy-storing device, described energy-storing device is connected with solar receiver through optical-electrical converter, described evaporator upper end is connected with frequency conversion heat pump compressor through cross valve, described evaporator lower end is connected with cooler by the road, the port of export of described cooler is connected with frequency conversion heat pump compressor through cross valve, described cross valve can make the heat transferring medium antikinesis in heat-exchanger rig.
Further, described solar receiver comprises the turnover solar panel of multi-disc, described every solar panel lower end is placed in rotating shaft and energy-storing device is connected, in described energy-storing device, be provided with comparator, described comparator rotates to realize each solar panel according to each solar panel harvest energy size control rotating shaft and reaches ceiling capacity collection capacity, described photo-translating system is by receiving solar energy, and carry out photovoltaic and change and power supply control, so that being provided, sufficient qualified electric energy supplies with heat-exchange system work, described heat-exchange system is electrically connected at stand-by power supply, external stand-by power supply is to automatically switch and use in the time that long-term rainy day illumination is not enough, photo-translating system is electrically connected at heat-exchange system.
Further, the described main transformer delivery valve port of export is provided with frequency conversion oil pump and frequency conversion oil pump outlet valve.
Further, the pipeline of described evaporator lower end is provided with choke valve.
Further, in described transformer body, be provided with oil temperature temperature measurement on-line device, described thermal detector is connected with frequency conversion heat pump compressor with frequency conversion oil pump through control module, and described control module, according to the oil temperature of temperature measurement on-line device, is controlled the work of frequency conversion oil pump and frequency conversion heat pump compressor automatically.
Further, described cooler is forced air cooler or water cooler.
Second embodiment of the invention is: a kind of using method of the main transformer heat-exchanger rig with Intelligent photovoltaic frequency conversion heat pump function is characterized in that: comprise a kind of main transformer heat-exchanger rig with Intelligent photovoltaic frequency conversion heat pump function as described in claim 5 or 6, concrete using method step is as follows:
(1) inlet valve on unlatching solar receiver and transformer body bottom delivery valve and top; Open control module, the oil temperature that control module is measured according to oil temperature on-line monitoring temperature device, controls the operation of heat-exchanger rig automatically;
(2) when oil temperature is during higher than set point, open evaporator, frequency conversion heat pump compressor, cooler and frequency conversion oil pump, oily stream in main transformer body starts to circulate, transformer oil is squeezed into oily flow process in evaporator through frequency conversion oil pump, after oil stream is cooled in evaporator, flow out evaporator, get back to again in main transformer body, carry out cooling; Heat transferring medium in evaporator flashes to gas after absorbing oil stream heat, be inhaled in frequency conversion heat pump compressor and compress through cross valve, high temperature after frequency conversion heat pump compressor compresses, high pressure heat transferring medium gas are to cooler, in cooler, be cooled into high-temp liquid, this high temperature heat transferring medium liquid becomes the mixture of cryogenic gas and cryogenic liquid through choke valve decompression throttling and evaporation, be back to again evaporator and the oily stream in evaporator carried out cooling, form the another cold oil stream cyclic process of taking turns;
When oil temperature is during lower than set point, open evaporator, frequency conversion heat pump compressor, cooler and frequency conversion oil pump, start heating transformer oil, because cross valve switches to heat tunnel pattern, the heat transferring medium gas coming from cooler, be inhaled in frequency conversion heat pump compressor through cross valve, be compressed into high temperature and high pressure gas, this HTHP heat transferring medium gas goes out after compressor, the transformer oil of the flow process of going rancid is heated to evaporator, and self be cooled into the heat transferring medium of liquid from high temperature and high pressure gas, go out after evaporator, through choke valve to expenditure and pressure evaporation in cooler, after the heat of a large amount of absorber cooler surrounding airs of heat transferring medium liquid in cooler, flash to gas, the heat transferring medium gas that goes out evaporator passes through again cross valve by frequency conversion heat pump compressor compresses, so circulation repeatedly,
(3) open control module, control module, according to the oil temperature of oil temperature on-line monitoring temperature measurement device, is carried out intellectual analysis computing, and the frequency of automatically controlling frequency conversion oil pump reduces or raises, thereby increases or reduce circulation of oil flow amount.
Compared with prior art, the present invention has following beneficial effect: the main transformer heat-exchanger rig of Intelligent photovoltaic frequency conversion heat pump function using due to the present invention, utilize solar energy and offer frequency conversion heat pump heat-exchange system and the required electric energy of oil stream heat exchange circulatory system work by photovoltaic conversion, therefore except the only a few time is used stand-by power supply, consume energy extremely low, main transformer cooling effectiveness is greatly improved, significantly reduce main transformer copper, iron loss, greatly improve main transformer operation conditions, compared with traditional main transformer type of cooling, have safe and reliable, cooling effectiveness is high, equipment volume is little, few by oil mass, consume energy low, overall operation economic dispatch huge advantage, it is the revolutionary character innovation of the main transformer type of cooling.This technology also can heat transformer oil in the main transformer of underload, stand-by heat, cold standby in the time of northern severe cold season, prevents that oil from flowing because low temperature lowers mobility, reduction electrical insulation properties and physicochemical property, to ensure main transformer safe operation.
The present invention has also overcome in the middle of prior art with the change of water-cooling pattern and is in operation and occurs to main transformer body seepage as cooling system, even small seepage all will produce catastrophe failure in main transformer under high voltage environment, and the serious consequence that even main transformer explodes; Also the shortcomings such as prior art is central because air heat content is low, makes main transformer cooling effectiveness low with air blast cooling or natural air cooled main transformer, and device fabrication volume is large, many by oil mass, operating cost is high, maintenance workload is large have been overcome; Also overcome existing main transformer heat exchange mode more northern severe cold season underload main transformer and stand-by heat, cold standby main transformer oil are heated, to prevent the poor fluidity of oil product in main transformer and to ensure that oil product electric property, dielectric strength and physicochemical property do not decline, compared with being now widely used traditional main transformer heat-exchange device, the present invention has huge advantage.
Brief description of the drawings
Fig. 1 is the photovoltaic transition electric power system principle schematic (K1 mains switch is that normally open, K2 mains switch are normally off, K1, K2 locking each other) of the embodiment of the present invention.
Fig. 2 is the control module operation principle schematic diagram of the embodiment of the present invention.
Fig. 3 is the transformer oil heat exchange circulation schematic diagram of the embodiment of the present invention.
Fig. 4 is the heat transferring medium cooling flow work schematic diagram of the embodiment of the present invention.
Fig. 5 is that the heat transferring medium of the embodiment of the present invention heats works schematic diagram.
Fig. 6 is the cooling main transformer works of the transformer oil of embodiment of the present invention schematic diagram.
Fig. 7 is the transformer oil heating main transformer works schematic diagram of the embodiment of the present invention.
Operation principle schematic diagram (2-1 in cross valve, 2-2 valve opening, 2-3,2-4 valve closing) when Fig. 8 is the cross valve cooling transformer oil of the embodiment of the present invention.
Fig. 9 is cross valve heating transformer when oil operation principle schematic diagram (2-3 in cross valve, 2-4 valve opening, 2-1,2-2 valve closing) of the embodiment of the present invention.
Figure 10 is the solar receiver work structuring schematic diagram of the embodiment of the present invention.
In figure: 1-frequency conversion heat pump compressor, 2-cross valve, 3-cooler, 4-blower fan; 5-choke valve, 6-evaporator, 7-evaporator heat transferring medium flow process, 8-main transformer delivery valve, 9-frequency conversion oil pump, 10-frequency conversion oil pump outlet valve, 11-oil flows to evaporator, the oily flow process in 12-evaporator, and 13-oil flows out evaporator, 14-main transformer inlet valve, 15-oil temperature is at thread detector, 16-main transformer body, 17-solar panel, 18-motor, 19-comparator.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As shown in Fig. 1～10, the present invention relates to a kind of main transformer heat-exchanger rig with Intelligent photovoltaic frequency conversion heat pump function, in comprising, be provided with the composition such as pipeline, valve of main transformer body 16, frequency conversion heat pump compressor 1, evaporator 6, cooler 3, choke valve 5, frequency conversion oil pump 9, oil temperature temperature measurement on-line device 15, control module, stand-by power supply and the system connection of transformer oil, transformer oil does not directly contact in evaporator 6 with heat transferring medium, but walk flow process separately, carry out heat exchange by wall.
A kind of operational mode of the main transformer heat-exchanger rig with Intelligent photovoltaic frequency conversion heat pump function:
The sidewall of main transformer body 16 bottoms is provided with main transformer delivery valve 8, the sidewall on main transformer body top is provided with main transformer inlet valve 14, described main transformer delivery valve 8 is connected with the oil-in of evaporator 6 bottom sidewalls through frequency conversion oil pump, and the oil-out of described evaporator 6 top sidewalls is connected with main transformer inlet valve 14 by the road.
The transformer oil that main transformer body 16 inside are full of mainly plays insulation and cooling (when north of china in winter is grease proofing solidifying, play heat effect) effect, main transformer winding and iron core are due at electricity, under the effect of magnetic, can generate heat, as not in time this heat taken away, to cause main transformer to burn the even serious accident of blast, described mobile cold transformer oil can be by main transformer winding, the heat that iron core produces is taken away, oil stream self is heated and become stream of hot oil, stream of hot oil in evaporator by with the heat exchange of low-temperature heat exchange medium, the heat transferring medium that its heat is evaporated is taken away, flow and self become cold oil, coming back in main transformer carries out cooling to winding and iron core, go round and begin again.
But, the north cold winter operation main transformer and in underload or cold standby, when hot stand-by duty need start, transformer oil in main transformer, because temperature is low, cause oil viscosity large, be difficult for flowing, dielectric strength declines, the catastrophe failure that now can cause main transformer to burn, therefore need in addition main transformer oil to be heated guarantee safe handling, or in transformer oil, add pour-depressant addition, increase the mobility of oil product, but the chemical group branch of additive is electric to transformer oil, insulation property and physicochemical property have a negative impact, the long-term safe operation that uses threat main transformer.
During cooling and heating transformer oil is worked, oil circulation process does not change, but heat transferring medium needs the switching by cross valve, change flow process, the effect of evaporator and cooler is exchanged each other, both in the time of cooling transformer oil, and the heat transferring medium evaporation of absorbing heat in evaporator, in cooler, be cooled, oil stream is cooled in evaporator; In the time of heating transformer oil, heat transferring medium heat release in evaporator is cooling, in cooler, absorbs heat; Oil stream is heated in evaporator; Same control module also should switch to cooling or mode of heating, and heat exchanging system is controlled automatically.
The connection of frequency changing refrigeration system and operational mode:
Described evaporator 6 upper ends are provided with heat transferring medium outlet, lower end is provided with heat transferring medium import, described evaporator 6 lower ends are connected with frequency conversion heat pump compressor 1 through the pipeline that is provided with cross valve 2, described frequency conversion heat pump compressor is connected with cooler 3 through the pipeline that is provided with cross valve 2, and the port of export of described cooler 3 is connected by choke valve with evaporator 6 upper ends.
The schematic diagram of cross valve 2 is as shown in 8 ~ 9:
When cold oil:
Control module is switched to refrigeration mode, open 2-1, the 2-2 valve of cross valve 2, close 2-3,2-4 valve, when operation, evaporator 6 heat transferring medium flow process output low pressure heat transferring medium gases, this low pressure heat transferring medium gas is compressed into high pressure by frequency conversion heat pump compressor 1, after high temperature heat transferring medium gas, enter cooler 3 cooling, in cooler 3, high pressure, high temperature heat transferring medium gas is cooled into high temperature heat transferring medium liquid, high temperature heat transferring medium liquid is by the decompression throttling cooling of choke valve 5, to throttling and evaporation in evaporator 6 heat transferring medium flow processs, the heat absorbing in a large amount of stream of hot oil becomes low pressure heat transferring medium gas, to frequency conversion heat pump compressor 1, compress again, with this iterative cycles.
When heating oil:
Control module is switched to heating mode, open 2-3, the 2-4 valve of cross valve 2, close 2-1,2-2 valve; By from cooler 3(now cooler do the use of the evaporation endothermic of heat transferring medium) low-pressure low-temperature heat transferring medium gas out sucks frequency conversion heat pump compressor 1 through cross valve 2 and is compressed into high temperature, high pressure heat transferring medium gas; The heat transferring medium flow process 7(that high temperature, high pressure heat transferring medium gas is reverse enters evaporator 6 now evaporator does the use of heating transformer oil), the transformer oil that enters the oily flow process 12 of evaporator 6 is heated, change low-temperature heat exchange media fluid into after self emitting heat; Low-temperature heat exchange media fluid enters cooler 3 by choke valve 5 throttling of reducing pressure, and after the heat of absorber cooler 3 wall surrounding airs, is evaporated to low-pressure low-temperature heat transferring medium gas; Low-pressure low-temperature heat transferring medium gas compresses through cross valve 2 to frequency conversion heat pump compressor 1 again, carries out the heat cycles of next round.
The control mode of transformer oil stream cooling (heating) circulation and frequency conversion refrigeration (heating) system:
In main transformer body 16, be provided with oil temperature temperature measurement on-line device 15, main transformer delivery valve 8 ports of export are provided with frequency conversion oil pump 9 and frequency conversion oil pump outlet valve 12.Control module is electrically connected at oil temperature temperature measurement on-line device 15, frequency conversion oil pump 9 and frequency conversion heat pump compressor 1.Temperature measurement on-line device 15 is sent to control module by oil temperature data in real time, control module is controlled frequency conversion oil pump 9, frequency conversion heat pump compressor 1 automatically according to the program that programming arranges in advance, and control module can be the computer processor of PLC, single-chip microcomputer or other form.In the time that oil temperature is increased to set point (or lower than set point), control module starts frequency conversion heat pump compressor, oil temperature higher (or lower), control module control frequency conversion heat pump compressor electric motor frequency increases, strengthen refrigerating capacity (or heating capacity), control frequency conversion oil pump simultaneously and increase internal circulating load, to reduce oil temperature (or improving oil temperature), vice versa, in the time that oil temperature reduces (or rising) to set temperature value, control module is closed frequency conversion heat pump compressor automatically, reduces the oily internal circulating load of frequency conversion oil pump simultaneously.
The energy supply of transformer heat-exchanger rig:
The electric energy of described transformer heat-exchange system is powered by photovoltaic converting system, and photovoltaic converting system includes: the compositions such as solar receiver, optical-electrical converter, energy-storing device, power-supply controller of electric, stand-by power supply.Heat-exchange system and power-supply controller of electric and stand-by power supply are electrically connected, and described power-supply controller of electric is also connected with energy-storing device, and described energy-storing device is connected with solar receiver through optical-electrical converter.
The solar energy being received by solar receiver, converts solar energy into electrical energy and is stored in energy-storing device by optical-electrical converter, and power-supply controller of electric can be converted into photo-voltaic power supply can be for the electric energy of main transformer heat-exchange system work.Photovoltaic transition electric power system is electrically connected at stand-by power supply, and when running into night or overcast and rainy for a long time, and main transformer oil temperature exceedes set point, now as the electricity shortage of photovoltaic transition electric power system, automatically starts stand-by power supply to supplement the deficiency of heat-exchange system power supply.Under normal circumstances, stand-by power supply is located closed condition usually, only has in the time of the electricity shortage of photovoltaic transition electric power system, and stand-by power supply is just opened automatically.While generally having sunlight in the daytime, photovoltaic transition electric power system can provide sufficient electric power, and night and overcast and rainy often temperature low (with respect to sunlight daytime), main transformer itself is cooling by atmospheric environment institute, required refrigerating capacity is also little, and the probability that therefore starts stand-by power supply is less.
In order to ensure the energy storage efficiency of solar receiver, the present invention also designed a kind of have auto-control solar panels 17 towards device, solar receiver comprises the turnover solar panel 17 of multi-disc, described every solar panel lower end is provided with axle sleeve, axle sleeve is placed in rotating shaft and energy-storing device is connected, rotating shaft is controlled rotation by motor 18, in described energy-storing device, be provided with comparator, described comparator 19 is connected with motor 18 and control system, comparator 19 is controlled rotating shaft according to each solar panel 17 harvest energy sizes and is rotated to realize the angle that regulates each solar panel, make the solar panel of different angles be adjusted to the angle identical with maximum energy-storage solar cell panel 17, to reach the maximum energy storage capacity of solar receiver.
In the time carrying out the work of cooling main transformer, the heat that transformer oil goes cooling main transformer winding to produce due to the function of current, the oily stream of heat flow to evaporator and gets back to again in main transformer after cooling by heat transferring medium cooling.Its concrete using method step is as follows: (1), first start photovoltaic transition electric power system; (2), open the inlet valve 14 on main transformer bottom delivery valve 8 and top; (3), open the oil stream flow process 12 of evaporator 6 in frequency conversion heat pump heat-exchange system; (4), open frequency conversion oil pump outlet valve 10 and frequency conversion oil pump 9, now oily stream starts to circulate; (5), open heat transferring medium flow process 7, choke valve 5, cooler 3 in evaporator 6 in frequency conversion heat pump heat-exchange system, the valve of blower fan 4 and connection etc.; (6), open 2-1,2-2 valve in cross valve 2, close 2-3,2-4 valve; (7), start frequency conversion heat pump compressor 1, beginning heat exchange work; (8), switching controls module is refrigeration mode, the oil temperature that control module is measured according to oil temperature on-line monitoring temperature device, carry out intellectual analysis computing, in the time that in main transformer, oil temperature rises to set point, control module starts frequency conversion heat pump compressor 1 automatically, and oil temperature is higher, control module control frequency conversion heat pump compressor 1 frequency increases, increase is exerted oneself, and the frequency of simultaneously automatically controlling frequency conversion oil pump 9 increases, and increases circulation of oil flow amount; (9), in the time that main transformer oil temperature reduces, otherwise above automatic control; (10), in the time that oil temperature in main transformer drops to below set point, frequency conversion heat pump compressor quits work, frequency conversion oil pump 9 is with minimum load operation (can be only open in turn in many frequency conversion oil pumps one and with minimum load operation).
In the time heating main transformer work, needing switching controls module and cross valve is heating mode, evaporator and cooler are changed to use function each other, heat transferring medium reverse flow, carry out according to the following steps: (1), first start photovoltaic transition electric power system, (2), open the delivery valve 8 of main transformer body bottom and the inlet valve 14 on top; (3) open frequency conversion oil pump outlet valve 10 and frequency conversion oil pump 9, now oily stream starts circulation; (4) 2-3, the 2-4 valve of unlatching cross valve 2, close 2-1,2-2 valve; (5) by from cooler 3(now cooler do the use of the evaporation endothermic of heat transferring medium) low-pressure low-temperature heat transferring medium gas out sucks frequency conversion heat pump compressor 1 through cross valve 2 and is compressed into high temperature, high pressure heat transferring medium gas; (6) the heat transferring medium flow process 7(that high temperature, high pressure heat transferring medium gas enter evaporator 6 now evaporator does the use of heating transformer oil), the transformer oil that enters the oily flow process 12 of evaporator 6 is heated, change low-temperature heat exchange media fluid into after self emitting heat; (7) low-temperature heat exchange media fluid enters cooler 3 by choke valve 5 throttling of reducing pressure, and after the heat of absorber cooler 3 wall surrounding airs, is evaporated to low-pressure low-temperature heat transferring medium gas; (8) low-pressure low-temperature heat transferring medium gas compresses through cross valve 2 to frequency conversion heat pump compressor 1 again, carries out the heat cycles of next round; (9) open control module, the oil temperature that control module is measured according to oil temperature on-line monitoring temperature device 15, carry out intellectual analysis computing, in the time that in main transformer, oil temperature drops to set point, control module is opened frequency conversion heat pump compressor 1 automatically, and oil temperature is lower, control module control frequency conversion heat pump compressor 1 frequency increases, increase is exerted oneself, and the frequency of simultaneously automatically controlling frequency conversion oil pump 9 increases, and increases circulation of oil flow amount; (11), in the time that main transformer oil temperature raises, otherwise above automatic control; (12), in the time that in main transformer, oil temperature is raised to set point, frequency conversion heat pump heat-exchange system quits work, frequency conversion oil pump 9 is with minimum load operation (can be only open in turn in many frequency conversion oil pumps one and with minimum load operation).
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (7)
1. the main transformer heat-exchanger rig with Intelligent photovoltaic frequency conversion heat pump function, comprise that one is built-in with the transformer body of transformer oil and is arranged at the heat-exchanger rig of transformer body one side, described heat-exchanger rig comprises cooler, be built-in with evaporator and the frequency conversion heat pump compressor of heat transferring medium, the sidewall of described transformer body bottom is provided with main transformer delivery valve, the sidewall on transformer body top is provided with main transformer inlet valve, described main transformer delivery valve is connected with the oil-in of base of evaporator sidewall by the road, the oil-out of described evaporator top sidewall is connected with main transformer inlet valve by the road, it is characterized in that, the power supply source that described heat-exchanger rig is required and power-supply controller of electric are electrically connected, described power-supply controller of electric is connected with energy-storing device, described energy-storing device is connected with solar receiver through optical-electrical converter, described evaporator upper end is connected with frequency conversion heat pump compressor through cross valve, described evaporator lower end is connected with cooler by the road, the port of export of described cooler is connected with frequency conversion heat pump compressor through cross valve, described cross valve can make the heat transferring medium antikinesis in heat-exchanger rig.
2. a kind of main transformer heat-exchanger rig with Intelligent photovoltaic frequency conversion heat pump function according to claim 1, described solar receiver comprises the turnover solar panel of multi-disc, described every solar panel lower end is placed in rotating shaft and energy-storing device is connected, in described energy-storing device, be provided with comparator, described comparator rotates to realize each solar panel according to each solar panel harvest energy size control rotating shaft and reaches ceiling capacity collection capacity, described photo-translating system is by receiving solar energy, and carry out photovoltaic and change and power supply control, so that being provided, sufficient qualified electric energy supplies with heat-exchange system work, described heat-exchange system is also connected with external stand-by power supply, photo-translating system is electrically connected at heat-exchange system.
3. a kind of main transformer heat-exchanger rig with Intelligent photovoltaic frequency conversion heat pump function according to claim 1, the described main transformer delivery valve port of export is provided with frequency conversion oil pump and frequency conversion oil pump outlet valve.
4. a kind of main transformer heat-exchanger rig with Intelligent photovoltaic frequency conversion heat pump function according to claim 3, the pipeline of described evaporator lower end is provided with choke valve.
5. a kind of main transformer heat-exchanger rig with Intelligent photovoltaic frequency conversion heat pump function according to claim 4, in described transformer body, be provided with oil temperature temperature measurement on-line device, described thermal detector is connected with frequency conversion heat pump compressor with frequency conversion oil pump through control module, described control module, according to the oil temperature of temperature measurement on-line device, is controlled the work of frequency conversion oil pump and frequency conversion heat pump compressor automatically.
6. a kind of main transformer heat-exchanger rig with Intelligent photovoltaic frequency conversion heat pump function according to claim 1, described cooler is forced air cooler or water cooler.
7. it is characterized in that with the using method of the main transformer heat-exchanger rig of Intelligent photovoltaic frequency conversion heat pump function: comprise a kind of main transformer heat-exchanger rig with Intelligent photovoltaic frequency conversion heat pump function as described in claim 5 or 6, concrete using method step is as follows:
(1) inlet valve on unlatching solar receiver and transformer body bottom delivery valve and top; Open control module, the oil temperature that control module is measured according to oil temperature on-line monitoring temperature device is controlled the operation of heat-exchanger rig automatically;
(2) when oil temperature is during higher than set point, open evaporator, frequency conversion heat pump compressor, cooler and frequency conversion oil pump, oily stream in main transformer body starts to circulate, transformer oil is squeezed into oily flow process in evaporator through frequency conversion oil pump, after oil stream is cooled in evaporator, flow out evaporator, get back to again in main transformer body, carry out cooling; Heat transferring medium in evaporator flashes to gas after absorbing oil stream heat, be inhaled in frequency conversion heat pump compressor and compress through cross valve, high temperature after frequency conversion heat pump compressor compresses, high pressure heat transferring medium gas are to cooler, in cooler, be cooled into high-temp liquid, this high temperature heat transferring medium liquid becomes the mixture of cryogenic gas and cryogenic liquid through choke valve decompression throttling and evaporation, be back to again evaporator and the oily stream in evaporator carried out cooling, form the another cold oil stream cyclic process of taking turns;
When oil temperature is during lower than set point, open evaporator, frequency conversion heat pump compressor, cooler and frequency conversion oil pump, start heating transformer oil, because cross valve switches to heat tunnel pattern, the heat transferring medium gas coming from cooler, be inhaled in frequency conversion heat pump compressor through cross valve, be compressed into high temperature and high pressure gas, this HTHP heat transferring medium gas goes out after compressor, the transformer oil of the flow process of going rancid is heated to evaporator, and self be cooled into the heat transferring medium of liquid from high temperature and high pressure gas, go out after evaporator, through choke valve to expenditure and pressure evaporation in cooler, after the heat of a large amount of absorber cooler surrounding airs of heat transferring medium liquid in cooler, flash to gas, the heat transferring medium gas that goes out evaporator passes through again cross valve by frequency conversion heat pump compressor compresses, so circulation repeatedly,
(3) open control module, control module, according to the oil temperature of oil temperature on-line monitoring temperature measurement device, is carried out intellectual analysis computing, and the frequency of automatically controlling frequency conversion oil pump reduces, thereby increases or reduce circulation of oil flow amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410191278.1A CN104008860B (en) | 2014-05-08 | 2014-05-08 | Main transformer heat exchanging device with functions of intelligent photovoltaic frequency-conversion heat pump and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410191278.1A CN104008860B (en) | 2014-05-08 | 2014-05-08 | Main transformer heat exchanging device with functions of intelligent photovoltaic frequency-conversion heat pump and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104008860A true CN104008860A (en) | 2014-08-27 |
| CN104008860B CN104008860B (en) | 2017-02-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183362A (en) * | 2014-09-16 | 2014-12-03 | 国家电网公司 | Main transformer radiator cooling device with intelligent frequency conversion function and use method thereof |
| CN104183361A (en) * | 2014-09-16 | 2014-12-03 | 国家电网公司 | Main transformer radiator cooling device with photovoltaic conversion function and use method thereof |
| CN105577115A (en) * | 2016-03-08 | 2016-05-11 | 西南民族大学 | Control recovery system for transformer oil serving as cycling medium of PV/T system |
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| EP0121267A1 (en) * | 1983-04-05 | 1984-10-10 | Yoshinobu Harumoto | Gas-insulated electrical apparatus |
| CN102538107A (en) * | 2012-03-05 | 2012-07-04 | 江苏创兰太阳能空调有限公司 | Solar energy double-source dynamic force air conditioner |
| CN102610368A (en) * | 2012-03-02 | 2012-07-25 | 江苏中联电气股份有限公司 | Solar semiconductor cooling device of explosion-proof transformer |
| CN103779049A (en) * | 2014-02-19 | 2014-05-07 | 国家电网公司 | Heat pump type main-transformation heat-exchanging device with SF6 (sulfur hexafluoride) as heat-exchanging medium and heat-exchanging method |
| CN203812693U (en) * | 2014-05-08 | 2014-09-03 | 国家电网公司 | Main-transformer heat exchange device with intelligent photovoltaic variable-frequency heat pump function |
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- 2014-05-08 CN CN201410191278.1A patent/CN104008860B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0121267A1 (en) * | 1983-04-05 | 1984-10-10 | Yoshinobu Harumoto | Gas-insulated electrical apparatus |
| CN102610368A (en) * | 2012-03-02 | 2012-07-25 | 江苏中联电气股份有限公司 | Solar semiconductor cooling device of explosion-proof transformer |
| CN102538107A (en) * | 2012-03-05 | 2012-07-04 | 江苏创兰太阳能空调有限公司 | Solar energy double-source dynamic force air conditioner |
| CN103779049A (en) * | 2014-02-19 | 2014-05-07 | 国家电网公司 | Heat pump type main-transformation heat-exchanging device with SF6 (sulfur hexafluoride) as heat-exchanging medium and heat-exchanging method |
| CN203812693U (en) * | 2014-05-08 | 2014-09-03 | 国家电网公司 | Main-transformer heat exchange device with intelligent photovoltaic variable-frequency heat pump function |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183362A (en) * | 2014-09-16 | 2014-12-03 | 国家电网公司 | Main transformer radiator cooling device with intelligent frequency conversion function and use method thereof |
| CN104183361A (en) * | 2014-09-16 | 2014-12-03 | 国家电网公司 | Main transformer radiator cooling device with photovoltaic conversion function and use method thereof |
| CN105577115A (en) * | 2016-03-08 | 2016-05-11 | 西南民族大学 | Control recovery system for transformer oil serving as cycling medium of PV/T system |
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| CN104008860B (en) | 2017-02-08 |
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