CN203259903U - Forced-oil-air cooling transformer energy-saving control system - Google Patents
Forced-oil-air cooling transformer energy-saving control system Download PDFInfo
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- CN203259903U CN203259903U CN 201320143265 CN201320143265U CN203259903U CN 203259903 U CN203259903 U CN 203259903U CN 201320143265 CN201320143265 CN 201320143265 CN 201320143265 U CN201320143265 U CN 201320143265U CN 203259903 U CN203259903 U CN 203259903U
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Abstract
The utility model discloses a forced-oil-air cooling transformer energy-saving control system. The system comprises an automatic control unit composed of a PLC control circuit and an industrial flat computer, a signal acquisition unit composed of a transformer internal oil temperature transmitter and a transformer external environment temperature transmitter, and an execution unit composed of a frequency converter and a main circuit logic switching executing mechanism contactor. The output end of the automatic control unit is connected with the input end of the execution unit. The input end of the automatic control unit is connected with the output end of the signal acquisition unit. The output end of the execution unit is connected with the input end of a cooler. The cooler comprises an oil pump and a fan. The oil pump and the fan are both connected with a motor. The cooler and a transformer form a forced-oil-air cooling transformer. The system achieves real-time regulation and control on the cooler of the forced-oil-air cooling transformer. An unnecessary energy waste can be prevented. Meanwhile, automatic control on equipment can be realized. The production efficiency is further improved.
Description
Technical field
The utility model belongs to energy-saving control system, and specifically finger is applied to the energy-saving control system of the forced-oil-air cooling transformer of large-scale metallurgical industry.
Background technology
Transformer is ubiquitous in the modern production life, especially self can produce a large amount of heat during the transformer oepration at full load in actual use, in order in time heat to be discharged different design of transformer different structures and method are arranged, otherwise the meeting of rising of heat accumulation temperature damages transformer insulated, even burn out transformer, cause security incident, impact is produced and is jeopardized simultaneously personal safety.Wherein the strong oil wind cooler is a kind of radiating and cooling equipment that aims at large-scale oil immersed type serial transformer and design, it is that the high temperature oil of transformer inside is got on the heating radiator by oil pump, on the heating radiator fan quenching is arranged simultaneously, cooled oil is recycled to transformer inside, so ceaselessly cyclic process guarantees that transformer is operated under the suitable temperature always, long-time reliability service.
The switching of traditional refrigeratory is manually to operate, manually increase or excise the cooler package of respective numbers according to the variation of transformer temperature, so following situation will appear: a kind of situation: when the load increase of the special variation of weather or transformer causes transformer temperature to rise, when personnel on duty find that temperature is high during to certain value again when other refrigeratory for subsequent use of deactivation, the temperature of real transformer inside is because the inertia effect also can continue a period of time of rising, this that is to say that the temperature of transformer inside tends to surpass permissible value, and this can cause damage on the transformer built-in electrical insulation affects serviceable life and production safety; Another kind of situation: when the load of the special variation of weather or transformer reduces so that transformer temperature when descending, at this time operating personnel often can not cut off the refrigeratory of right quantity timely, even can use all refrigeratorys always, cause the waste of the energy.
The in addition traditional this effect that can not play level and smooth temperature control by the type of cooling that increases the excision cooler package, the situation that similar " two groups of inadequate three groups of wastes " also can often occur, (consideration environment temperature) just can run well the transformer temperature inventor in the temperature of regulation as long as it is controlled at, and therefore this situation also is to cause a reason of energy dissipation.The method that traditional refrigeratory adopts direct start and stop not only impacts the large electric current that affects when starting simultaneously its serviceable life to motor and equipment also can waste the part energy.
In sum, the control of traditional strong oil wind cooler can only realize roughly the purpose of control transformer temperature but can not accomplish dynamic meticulous automatic control, cause a large amount of wastes of the energy and to the infringement of equipment, therefore needed a kind of energy conserving system of full-automatic accurately control temperature to address the above problem.
The utility model content
The purpose of this utility model is, a kind of complete system automation mechanized operation is provided, can be constantly changes forced-oil-air cooling transformer energy saving control system that the stoppage in transit of refrigeratory is adjusted to overcome the existing above-mentioned shortcoming and defect of prior art according to transformer temperature.
The technical matters of the required solution of the utility model can be achieved through the following technical solutions:
Forced-oil-air cooling transformer energy saving control system, comprise: automatic control unit, signal gathering unit, performance element, it is characterized in that, the output terminal of described automatic control unit is connected with the input end of performance element, the input end of described automatic control unit is connected with the output terminal of signal gathering unit, and the output terminal of described performance element is connected with the input end of forced-oil-air cooling transformer;
Described automatic control unit comprises: PLC control loop and industrial panel computer, the input end of described PLC control loop and signal gathering unit are connected output terminal and are connected with industrial panel computer, and its output terminal and industrial panel computer are connected input end and are connected with performance element.
Further, described PLC control loop comprises: PLC controls CPU, the power supply indication mechanism, the first contactor, the 11 contactor, the 11 button, the 12 button, the 11 universal seclector, the first button, the first relay, the second relay, the 3rd relay, the 4th relay and the second relay, input end and the first contactor of described PLC control CPU, the 11 contactor, the 11 button, the 12 button, the 11 universal seclector, the output terminal of the first button connects, its output terminal and the first relay, the second relay, the 3rd relay, the 4th relay, the input end of the 5th relay connects, the input end of described power supply indication mechanism and the second relay be connected the output terminal of relay and be connected.
Further, described power supply indication mechanism comprises: power lights, electric bell, the first pilot lamp HR and the second pilot lamp, the input end of described electric bell is connected with the output terminal of the 5th relay, described the first pilot lamp HR be connected the input end of pilot lamp and be connected with the output terminal of the second relay.
Further, described signal gathering unit comprises: the inner oil temperature transmitter of transformer and transformer external environment temperature transmitter, output terminal and the PLC control loop of the inner oil temperature transmitter of described transformer and transformer external environment temperature transmitter.
Further, described performance element comprises: frequency converter and major loop logic are switched topworks's contactor, the output terminal of described frequency converter is connected with the input end of PLC control CPU, the first contactor and the 11 contactor, its input end is connected with the output terminal of PLC control CPU, the first relay, and the output terminal that described major loop logic is switched topworks's contactor is connected with the refrigeratory input end.
Further, described refrigeratory and transformer form the forced-oil-air cooling transformer, and described refrigeratory comprises oil pump and fan, and described oil pump is connected with motor with fan.
Further, described forced-oil-air cooling transformer can be comprised of transformer and plural groups refrigeratory, and described refrigeratory includes plural platform oil pump and fan.
The beneficial effects of the utility model:
Compared with prior art, the utility model makes the refrigeratory of forced-oil-air cooling transformer realize real-time monitoring, has saved unnecessary energy dissipation, has realized simultaneously the automatic control of equipment, has improved production efficiency.
Description of drawings
Fig. 1 is the utility model system construction drawing.
Fig. 2 is the PLC control drawing.
Fig. 3 is worker, frequency conversion loop diagram and power supply indication mechanism loop diagram.
Fig. 4 is convertible circuit figure.
Fig. 5 is 20,000 tons of forced-oil-air cooling transformers.
Fig. 6 is 30,000 tons of forced-oil-air cooling transformers.
Fig. 7 is the utility model system control logic frame diagram.
Reference numeral:
Forced-oil-air cooling transformer 400, transformer 410, refrigeratory 420, oil pump 421 and fan 422.
The first contactor KM1, the 11 contactor KM11, the 11 button SB11, the 12 button SB12, the 11 universal seclector SA11, the first button SB1, the first relay K A1, the second relay K A2, the 3rd relay K A3, the 4th relay K A4 and the second relay K A2.
Power lights HW1, electric bell DL1, the first pilot lamp HR1 and the second pilot lamp HG1.
Step 600, step 700, step 810, step 820, step 830, step 840, step 850.
Embodiment
Below in conjunction with specific embodiment, the utility model is done progressive explanation.Should be understood that following examples are only for explanation the utility model but not for limiting scope of the present utility model.
Embodiment 1
As shown in Figure 1, forced-oil-air cooling transformer energy saving control system, automatic control unit 100, signal gathering unit 200, performance element 300, it is characterized in that, the output terminal of automatic control unit 100 is connected with the input end of performance element 300, the input end of automatic control unit 100 is connected with the output terminal of signal gathering unit 200, and the output terminal of performance element 300 is connected with the input end of forced-oil-air cooling transformer 400.
Wherein, the automatic control unit 100 main logic controls of being responsible for system, the calculating of parameter input and analog quantity, comprise: PLC control loop 110 and industrial panel computer 120, the input end of PLC control loop 110 is connected with the output terminal that signal gathering unit 200 is connected with industrial panel computer, in order to the next temperature information of acknowledge(ment) signal collecting unit 200 transmission, its output terminal is connected with the input end that industrial panel computer 120 is connected with performance element, to send different command to performance element 300 according to actual conditions, performance element 300 is regulated forced-oil-air cooling transformer 400 by these orders.
Signal gathering unit comprises: the inner oil temperature transmitter 210 of transformer and transformer external environment temperature transmitter 220, the output terminal that the inner oil temperature transmitter 210 of transformer is connected with transformer external environment temperature transmitter is connected with the input end of PLC control loop 110.The inner oil temperature transmitter 210 of transformer and transformer external environment temperature transmitter 220 are responsible for respectively gathering the other environment temperature of the gentle transformer of transformer interior oil, these two parameters are mainly in order to realize the automated closed-loop control of transformer cooling system, traditional closed loop only adopts the oil temperature FEEDBACK CONTROL, and for this high-power transformer, only control the operating specification that is not well positioned to meet transformer with oil temperature simply, outside environment for use produces very big-difference because the difference in season can make transformer, thereby so that oil temperature also is not quite similar in Various Seasonal same load situation, the inventor has a better parameter and is used as criterion in the case, that is exactly temperature rise, and the temperature rise of general provision transformer oil is no more than 45 ℃.
As shown in Figure 5, forced-oil-air cooling transformer 400 is 20,000 tons of forced-oil-air cooling transformers in the present embodiment, is comprised of transformer 410 and four groups of refrigeratorys 420, and refrigeratory 420 comprises oil pump 421 and 3 fans 422, and oil pump 421 is connected with fan and is connected with motor 500.After PLC control loop 110 receives the oil temperature and environment temperature from the scene that is sent by signal gathering unit 200, can calculate according to 120 parameters of setting on the panel computer, the control parameter that output is best is given corresponding frequency converter 310, four groups of refrigeratory 410 corresponding four frequency converters 310, running frequency according to output, the wherein start and stop logic of two groups of refrigeratorys 410 is set, make it be lower than certain frequency and become out of service, treat just to restart when PLC control loop 110 requires running frequency to reach setting value this group refrigeratory 410.
Such as Fig. 2, shown in Figure 4, the output terminal of frequency converter 310 is connected with the input end of PLC control CPU111, the first contactor KM1 and the 11 contactor KM11, its input end is connected with the output terminal of PLC control CPU111, the first relay K A1, and the output terminal that described major loop logic is switched topworks's contactor 320 is connected with refrigeratory 420 input ends.
The output terminal of frequency converter 310 has 2 with the circuit that PLC control CPU111 input end is connected, and act as respectively: transmission failure signal and transmission run signal; The output terminal of frequency converter 310 is connected with the input end of the first contactor KM1 and the 11 contactor KM11, and the output terminal of the first contactor KM1 and the 11 contactor KM11 is connected with PLC control CPU111, for switching the passage (referring to Fig. 3) of power frequency, frequency conversion.The input end of frequency converter 310 is connected with the output terminal of PLC control CPU111, the speed-regulating signal that sends in order to receive PLC control CPU111; The input end of frequency converter 310 is connected with the output terminal of the first relay K A1, in order to switch frequency converter 310.
As shown in Figure 2, the input end of PLC control CPU111 is connected with the output terminal of the first contactor KM1, the 11 contactor KM11, the 11 button SB11, the 12 button SB12, the 11 universal seclector SA11, the first button SB1, its output terminal is connected with the input end of the first relay K A1, the second relay K A2, the 3rd relay K A3, the 4th relay K A4, the 5th relay K A5, the input end of described power supply indication mechanism 112 and the second relay K A2 be connected the output terminal of relay K A2 and be connected.
The input end of PLC control CPU111 is connected with the output terminal of the 11 button SB11, starts frequency converter 310 by the 11 button SB11; The input end of PLC control CPU111 is connected with the output terminal of the 12 button SB12, stops frequency converter 310 by the 12 button SB12; The input end of PLC control CPU111 is connected with the output terminal of the 11 universal seclector SA11, can determine power frequency or the method for operation of frequency conversion by the 11 universal seclector SA11 that is positioned on the cabinet door; The input end of PLC control CPU111 is connected with the output terminal that the first button closes SB1, closes SB1 by the first button failure warning is resetted, and only have after fixing a breakdown just can reset, and the front machine that resets can't start work.
Fig. 3 is worker, frequency conversion loop diagram and power supply indication mechanism loop diagram, such as Fig. 2, shown in Figure 3.The first contactor KM1 is frequency conversion loop contactor, the 11 contactor KM11 is power frequency operation loop contactor, opening power, power lights HW1 display white, determine the method for operation by switch the 11 universal seclector SA11 on the cabinet door again, after selecting frequency conversion channel, export the 4th relay K A4 by PLC control CPU111 behind the System self-test non-fault warning message and the 3rd relay K A3 connects the first contactor KM1, form the frequency conversion loop, then start by the 11 button SB11, stop by being the 12 button SB12 realization, different running status cabinet doors is all by the second relay K A2 signal transmission to the first pilot lamp HR1 and the second pilot lamp HG1, and when frequency converter 310 operation, the first pilot lamp HR1 is shown in red, when frequency converter 310 stopped, the second pilot lamp HG1 was shown in green; The 11 contactor KM11 connects after in like manner selecting the power frequency passage, and system is by original control system operation start and stop.When system was set as auto state by industrial panel computer 120, the operation of frequency converter 310 was automatic control state, need not personnel's manual operation.When breaking down, be connected with the output terminal of PLC control CPU111, the 5th relay K A5 that is connected with the input end of electric bell DL1 will connect, thereby gives the alarm by electric bell DL1.
Fig. 7 is the utility model system control logic frame diagram.As shown in Figure 7, the operation of the utility model system is as follows:
(1) signal gathering unit 200 becomes the number of delivering letters by the inner oil temperature transmitter 210 of transformer and transformer external environment temperature transmitter 220 with the oil temperature of transformer and environment temperature and is passed to PLC control CPU111(step 600).
(2) PLC control CPU111 and industrial panel computer 120 are connected to each other, and calculate according to the parameter of setting on the industrial panel computer 120, and the control parameter that output is best is given corresponding performance element frequency converter 310(step 700).
(3) frequency converter 310 quantity are corresponding one by one with refrigeratory 420, and refrigeratory 420 is 4 groups in the present embodiment, and then frequency converter 310 is 4.
(4) when frequency converter 310 occurring and all stop transport through logic decision time-delay put into operation the first refrigeratory and the 4th refrigeratory power frequency operation (step 810).
(5) when four frequency converter 310 running frequencies are lower than 22HZ, through logic decision time-delay stoppage in transit the 3rd frequency converter (step 820).
(6) when other three running frequencies are lower than 20HZ, stop again the second frequency converter (step 830) through the logic decision time-delay.
(7) when two running frequencies of residue are higher than 23HZ, through logic decision delayed startup the 3rd frequency converter (step 840).
(8) when three running frequencies are higher than 25HZ, restart the second frequency converter (step 850) through the logic decision time-delay.
4 frequency converters 310 are all stopped transport behind the power supply power-fail, and PLC control CPU111 any 2 groups of power frequencies that can put into operation are restarted so need not set to pounce on to catch, and after system was normal, the stoppage in transit power frequency started frequency conversion and gets final product.Every group of frequency converter 310 worker's frequency conversion contactors are done electrical interlocks, avoid power frequency/frequency conversion with opening short circuit.
Embodiment 2
As shown in Figure 6, the staff can select according to the real work situation forced-oil-air cooling transformer of different capacity, and the utility model is widely used, and goes for the forced-oil-air cooling transformer of various power.
Forced-oil-air cooling transformer 400 is 30,000 tons of forced-oil-air cooling transformers among the embodiment 2, is comprised of transformer 410 and five groups of refrigeratorys 420, and refrigeratory 420 comprises oil pump 421 and 3 fans 422, and oil pump 421 is connected with fan and is connected with motor 500.
All the other are with embodiment 1.
More than embodiment of the present utility model is illustrated, but the utility model is as limit, only otherwise break away from aim of the present utility model, the utility model can also have various variations.
Claims (7)
1. forced-oil-air cooling transformer energy saving control system, comprise: automatic control unit (100), signal gathering unit (200), performance element (300), it is characterized in that, the output terminal of described automatic control unit (100) is connected with the input end of performance element (300), the input end of described automatic control unit (100) is connected with the output terminal of signal gathering unit (200), and the output terminal of described performance element (300) is connected with the input end of forced-oil-air cooling transformer (400);
Described automatic control unit (100) comprising: PLC control loop (110) and industrial panel computer (120), the input end of described PLC control loop (110) is connected 120 with signal gathering unit (200) with industrial panel computer) output terminal be connected, its output terminal is connected 300 with industrial panel computer (120) with performance element) input end be connected.
2. forced-oil-air cooling transformer energy saving control system according to claim 1, it is characterized in that: described PLC control loop (110) comprising: PLC controls CPU(111), power supply indication mechanism (112), the first contactor (KM1), the 11 contactor (KM11), the 11 button (SB11), the 12 button (SB12), the 11 universal seclector (SA11), the first button (SB1), the first relay (KA1), the second relay (KA2), the 3rd relay (KA3), the 4th relay (KA4) and the second relay (KA2), described PLC control CPU(111) input end and the first contactor (KM1), the 11 contactor (KM11), the 11 button (SB11), the 12 button (SB12), the 11 universal seclector (SA11), the output terminal of the first button (SB1) connects, its output terminal and the first relay (KA1), the second relay (KA2), the 3rd relay (KA3), the 4th relay (KA4), the input end of the 5th relay (KA5) connects, the input end of described power supply indication mechanism (112) and the second relay (KA2) be connected the output terminal of relay (KA2) and be connected.
3. forced-oil-air cooling transformer energy saving control system according to claim 2, it is characterized in that: described power supply indication mechanism (112) comprising: power lights (HW1), electric bell (DL1), the first pilot lamp (HR1) and the second pilot lamp (HG1), the input end of described electric bell (DL1) is connected with the output terminal of the 5th relay (KA5), described the first pilot lamp (HR1) be connected the input end of pilot lamp (HG1) and be connected with the output terminal of the second relay (KA2).
4. forced-oil-air cooling transformer energy saving control system according to claim 1, it is characterized in that: described signal gathering unit (200) comprising: the inner oil temperature transmitter (210) of transformer and transformer external environment temperature transmitter (220), output terminal and the PLC control loop (110) of the inner oil temperature transmitter (210) of described transformer and transformer external environment temperature transmitter (220).
5. forced-oil-air cooling transformer energy saving control system according to claim 1, it is characterized in that: described performance element (300) comprising: frequency converter (310) and major loop logic are switched topworks's contactor (320), the output terminal of described frequency converter (310) and PLC control CPU(111), the input end of the first contactor (KM1) and the 11 contactor (KM11) connects, its input end and PLC control CPU(111), the output terminal of the first relay (KA1) connects, and the output terminal that described major loop logic is switched topworks's contactor (320) is connected with refrigeratory (420) input end.
6. forced-oil-air cooling transformer energy saving control system according to claim 5, it is characterized in that: described refrigeratory (420) forms forced-oil-air cooling transformer (400) with transformer (410), described refrigeratory (420) comprises oil pump (421) and fan (422), and described oil pump (421) is connected 422 with fan) be connected with motor (500).
7. forced-oil-air cooling transformer energy saving control system according to claim 6, it is characterized in that: described forced-oil-air cooling transformer (400) is comprised of transformer (410) and plural groups refrigeratory (420), and described refrigeratory (420) includes plural platform oil pump (421) and fan (422).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320143265 CN203259903U (en) | 2013-03-27 | 2013-03-27 | Forced-oil-air cooling transformer energy-saving control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320143265 CN203259903U (en) | 2013-03-27 | 2013-03-27 | Forced-oil-air cooling transformer energy-saving control system |
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| CN203259903U true CN203259903U (en) | 2013-10-30 |
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| CN 201320143265 Expired - Fee Related CN203259903U (en) | 2013-03-27 | 2013-03-27 | Forced-oil-air cooling transformer energy-saving control system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104156017A (en) * | 2014-08-19 | 2014-11-19 | 江苏科技大学 | High-power high-frequency transformer double-layer oil temperature monitoring system and method thereof |
| CN105717809A (en) * | 2014-12-05 | 2016-06-29 | 四方特变电工智能电气有限公司 | Transformer intelligent type electronic controller |
| CN106249683A (en) * | 2016-08-24 | 2016-12-21 | 苏州哈度软件有限公司 | A kind of electrical equipment cooling control system |
| CN114068144A (en) * | 2021-11-11 | 2022-02-18 | 国网新疆电力有限公司乌鲁木齐供电公司 | Control device and control method for transformer air cooling system |
| CN114706352A (en) * | 2022-03-01 | 2022-07-05 | 大唐韩城第二发电有限责任公司 | DCS control method for main transformer ventilation system |
-
2013
- 2013-03-27 CN CN 201320143265 patent/CN203259903U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104156017A (en) * | 2014-08-19 | 2014-11-19 | 江苏科技大学 | High-power high-frequency transformer double-layer oil temperature monitoring system and method thereof |
| CN105717809A (en) * | 2014-12-05 | 2016-06-29 | 四方特变电工智能电气有限公司 | Transformer intelligent type electronic controller |
| CN106249683A (en) * | 2016-08-24 | 2016-12-21 | 苏州哈度软件有限公司 | A kind of electrical equipment cooling control system |
| CN114068144A (en) * | 2021-11-11 | 2022-02-18 | 国网新疆电力有限公司乌鲁木齐供电公司 | Control device and control method for transformer air cooling system |
| CN114706352A (en) * | 2022-03-01 | 2022-07-05 | 大唐韩城第二发电有限责任公司 | DCS control method for main transformer ventilation system |
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Granted publication date: 20131030 Termination date: 20150327 |
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