CN205507574U - Transformer automatically cooling system - Google Patents
Transformer automatically cooling system Download PDFInfo
- Publication number
- CN205507574U CN205507574U CN201620079447.7U CN201620079447U CN205507574U CN 205507574 U CN205507574 U CN 205507574U CN 201620079447 U CN201620079447 U CN 201620079447U CN 205507574 U CN205507574 U CN 205507574U
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- switch
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- transformator
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- 238000001816 cooling Methods 0.000 title claims abstract description 41
- 239000003054 catalyst Substances 0.000 claims description 35
- 238000005259 measurement Methods 0.000 claims description 5
- 239000013589 supplement Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 210000004899 c-terminal region Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Abstract
The utility model provides a transformer automatically cooling system, including main circuit, control circuit, pre -emergency circuit and temperature measuring device, in the main circuit, working power supply is in proper order through first fuse, links to each other with the cooler after the node is normally opened to contactor first, among the control circuit, the automatic switch module with connect at both ends of the power supply behind the coil series connection of contactor, in the pre -emergency circuit, working power supply is in proper order through the second fuse, standby switch, and the back is connected with the standby cooling ware, the automatic switch module includes that the second of stop switch, starting switch and contactor normally opens the node, and the auxiliary contact of stop switch and contactor establishes ties, temperature measuring device is used for the oil temperature of measuring transformer to export measuring result stop switch and starting switch's control end. The utility model discloses automation that can the real time control cooler is opened and is stopped, reduces station power consumption consumption, can also avoid transformer tripping operation stoppage in transit accident when cooler circuit fault simultaneously.
Description
Technical field
This utility model relates to field transformer, is specifically related to a kind of transformator automatic cooling system.
Background technology
Transformator is owing in use can produce the biggest heat, need equipped with chiller, existing 35kv transformator many employings oil mode cools down, but continuous high temperature hot for the summer, the state of high load capacity, this type of cooling is often difficult to meet the cooling needs of transformator, therefore, 35kV transformer station is many at present carries out cooling auxiliary equipped with external fan to transformator, and cooling effect is notable.
As shown in Figure 1; for in prior art; traditional cooling system mode of connection; three-phase alternating current flows out through A, B, C terminal; power to cooler after fuse FU1, switch K; wherein; the stream of crossing of FU1 control circuit fuses; switch K controls the start and stop of external fan; by from figure 1 it appears that traditional cooling system circuit connecting method can only use manual start and stop, which results in two defects: (1) is when temperature is reduced to be not required to supplement heat rejecter; chiller can not autostop, cause transforming plant consume excessive；(2) when chiller breaks down, if maintainer fails to pinpoint the problems in time, and scene of rushing towards at the appointed time processes, it will cause transformer oil temperature rise, even makes transformator tripping operation stop transport, reduces the operational reliability of power system.
Utility model content
This utility model overcomes the deficiency that prior art exists, it is provided that a kind of transformator automatic cooling system that can control transformer cooling device automatic start-stop.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is: a kind of transformator automatic cooling system, it is characterized in that, including main circuit, control circuit, emergency power circuit and temperature measuring equipment, in described main circuit, working power is connected with cooler successively after the first fuse, the first normally opened node of catalyst；In described control circuit, the coils connected in series connection of automatic switch module and described catalyst is followed by both ends of power；In described emergency power circuit, working power is connected with standby cooler successively after the second fuse, backup circuit breaker；Described automatic switch module includes the second normally opened node of shutdown switch, activate switch and described catalyst, the auxiliary contact series connection of described shutdown switch and described catalyst；Described temperature measuring equipment is for the oil temperature of measuring transformer, and measurement result exports the control end of described shutdown switch and described activate switch；Described shutdown switch and described activate switch are temperature controlled normal open switch, and described shutdown switch is connected with described temperature measuring equipment with the control end of described activate switch.
In described automatic switch module, described activate switch is connected in parallel on the auxiliary contact two ends of described catalyst KM1.
In described automatic switch module, described activate switch is connected in parallel on the circuit two ends that the auxiliary contact series connection of described shutdown switch and described catalyst is formed.
Described a kind of transformator automatic cooling system, when the oil temperature of transformator is increased to more than n, described shutdown switch closes, when the oil temperature of transformator is increased to more than m, described activate switch closes, described n is the temperature return value of transformator, and described m is the desired temperature of transformator, and described desired temperature m is more than temperature return value n.
Described a kind of transformator automatic cooling system, when the oil temperature of transformator is more than system highest setting temperature H, described backup circuit breaker automatically closes and is kept closed until manually recovering.
Described a kind of transformator automatic cooling system, also includes emergency control circuit, in described emergency control circuit, after standby the second normally opened node parallel connection controlling switch and the second catalyst, is connected to both ends of power with the coils connected in series of the second catalyst；Described backup circuit breaker is the first normally opened node of the second catalyst, and the described standby switch that controls is for setting the closed temperature normal open switch as H, and the described standby control end controlling switch is connected with described temperature measuring equipment.
Described a kind of transformator automatic cooling system, also includes that thermorelay FR, the heater element of described thermorelay FR are connected in described main circuit, and the normally closed interlock of described thermorelay FR is connected in the main circuit of described control circuit.
This utility model compared with prior art has the advantages that (1) can be according to transformer temperature real-time implementation cooler automatic start-stop, it is achieved transformator automatic cooling function, and without manual operation, it is achieved cooler start and stop function full automation；Further, when need not supplement heat rejecter, cooler can be closed down in time, reducing station electric consumption；(2) can automatically start standby cooler when cooler circuit breaks down, make temperature of oil in transformer persistently to increase, it is to avoid occur that transformator tripping operation is stopped transport, or the probability of high temperature failure, improve the reliability of Operation of Electric Systems.
Accompanying drawing explanation
Fig. 1 is the mode of connection of cooler in prior art；
Fig. 2 is the first embodiment of a kind of transformator automatic cooling system of the present utility model；
Fig. 3 is the second embodiment of a kind of transformator automatic cooling system of the present utility model.
Detailed description of the invention
In order to become more apparent upon essentiality content of the present utility model, with specific embodiment, this utility model is described further below in conjunction with the accompanying drawings.
As in figure 2 it is shown, first embodiment of the present utility model, it may be assumed that a kind of transformator automatic cooling system, including main circuit, control circuit, emergency power circuit and temperature measuring equipment (not shown).In main circuit, the three-phase alternating current that the terminals ABC of three-phase alternating current working power flows out is connected with cooler M1 successively after the first normally opened node of the first fuse FU1, catalyst KM1；In control circuit, terminals A sequentially passes through fuse FU2, shutdown switch K1, the auxiliary contact of catalyst KM1, catalyst KM1 coil QM after be connected with terminals B, activate switch K2 is connected in the both sides of circuit that the auxiliary contact series connection of shutdown switch K1 and catalyst KM1 is formed in parallel；In emergency power circuit, working power, successively through the second fuse FU2, is connected with standby cooler M2 after backup circuit breaker K.
Wherein, temperature measuring equipment is installed on the transformer, its signal output part and shutdown switch K1, and the control end of activate switch K2 is connected, for the oil temperature of measuring transformer, and measurement result exports the control end of described shutdown switch and described activate switch.Shutdown switch K1 and activate switch K2 are temperature controlled normal open switch, their end that controls is connected with the signal output part of temperature measuring equipment, when receiving temperature signal higher than self setting closed temperature of end is controlled when shutdown switch K1 and activate switch K2, corresponding switch can close under the control action controlling end of oneself, otherwise, it is off-state always.Wherein, the closed temperature of shutdown switch K1 is set as temperature return value n of transformator, and the closed temperature of activate switch K2 is set as the desired temperature m of transformator.Wherein, the implication of desired temperature m is: when the temperature of transformator raises more than m, cooler should be started working with supplement heat rejecter transformator, in order to avoid transformer temperature is too high, the implication of temperature return value n is: when the temperature that the supplement heat rejecter of cooler makes transformator drops below n, cooler should quit work, and system can stop supplement heat rejecter to save the energy, it is recognised that m > n.
Additionally, the signal output part of temperature measuring equipment is also connected with the control end of backup circuit breaker K, when temperature measuring equipment measurement to temperature of oil in transformer rise to Faulty Temperature H time, the control end of backup circuit breaker K controls backup circuit breaker K Guan Bi.Do not decline after temperature of oil in transformer rises to desired temperature m, when continuously rising to H on the contrary, illustrating that main circuit or the control circuit of the transformator automatic cooling system of the present embodiment break down, now, the control end of backup circuit breaker K starts, backup circuit breaker K is made to close, the most standby cooler M2 starts, and makes temperature of oil in transformer be unlikely to continue to rise, it is to avoid to occur that transformator tripping operation is stopped transport, or the probability of high temperature failure, improves the operational reliability of power system.
Wherein, the model of catalyst KM1 can be CJ16B-63.
Additionally, a kind of transformator automatic cooling system of the present embodiment also includes thermorelay FR, it is arranged between main contact and the cooler of catalyst KM1 in major loop, for major loop is carried out overtemperature protection.
The work process of the transformator automatic cooling system of the present embodiment is as follows:
(1) transformator is started working, and temperature is relatively low, and shutdown switch K1 and activate switch K2 all disconnect, and cooler does not works；
(2) elongated along with the working time, transformer temperature gradually rises to more than temperature return value n, and the control end associated with transformer temperature controller makes shutdown switch K1 close, and activate switch K2 remains open；
(3) transformer temperature continues to rise, and when reaching desired temperature m, activate switch K2 closes, now, the coil QM1 of relay K M1 is charged, its main contact and the equal adhesive of auxiliary contact, and control circuit forms self-locking, main circuit is connected, and cooler starts, and supplement heat rejecter starts；
(4) transformer temperature begins to decline, and when temperature is down between m and n, activate switch K2 disconnects, but owing to relay K M is in self-locking state, cooler will not stop cooling；
(5) when temperature continues to drop below n, shutdown switch K1 disconnects, the coil QM dead electricity of relay K M1, and major loop disconnects, and cooler stops cooling；
(6) after cooler stops cooling, transformer temperature continues to rise, then start the work process of the cooling automatically of next round.
If cooler M1 breaks down, or place circuit malfunctions makes cooler not operate, then temperature of oil in transformer can persistently rise, when temperature of oil in transformer rises to the Faulty Temperature H of default, backup circuit breaker K can close and be kept closed under the effect controlling end, standby cooler starts, and cools down transformator, until maintainer manually recovers.
As it is shown on figure 3, be the second embodiment of the present utility model, it may be assumed that a kind of transformator automatic cooling system, including main circuit, control circuit, emergency power circuit, emergency control circuit and temperature measuring equipment (not shown).In main circuit, the three-phase alternating current that terminals A, B, C of three-phase alternating current working power flows out is connected with cooler M1 successively after the first normally opened node of the first fuse FU1, catalyst KM1；In control circuit, terminals A sequentially passes through shutdown switch K1, the auxiliary contact of catalyst KM1, catalyst KM1 coil QM after be connected with terminals B, activate switch K2 is connected in the both sides of the auxiliary contact of catalyst KM1 in parallel；In emergency power circuit, working power is connected with standby cooler M2 successively after the first normally opened node of fuse FU2, the second catalyst KM2；In emergency control circuit, the second normally opened node of the second catalyst KM2 with switch K3 parallel connection after connect with the coil QM2 of the second catalyst KM2 after, one end is connected with terminals A, and the other end is connected with terminals B.
Wherein, temperature measuring equipment is installed on the transformer, its signal output part and shutdown switch K1, and activate switch K2, the control end of standby control switch K3 are connected, for the oil temperature of measuring transformer, and measurement result is exported the control end of described shutdown switch and described activate switch.Shutdown switch K1 and activate switch K2, the standby switch K3 that controls is temperature controlled normal open switch, their end that controls is connected with the signal output part of temperature measuring equipment, controlling when receiving temperature signal higher than self setting closed temperature of end when shutdown switch K1 and activate switch K2, corresponding switch can close under the control action controlling end of oneself；Otherwise, it is off-state always.Wherein, the closed temperature of shutdown switch K1 is set as temperature return value n of transformator, the closed temperature of activate switch K2 is set as the desired temperature m of transformator, the standby closed temperature controlling switch K3 is set as the Faulty Temperature H of transformator, wherein, H > m > n, technical staff can be according to transformator fieldwork environment and running parameter, determine the value of m, n and H.
nullThe normal workflow of the present embodiment is identical with first embodiment，Fail operation flow process unlike first embodiment: if cooler M1 breaks down，Or place circuit malfunctions makes cooler not operate，Then temperature of oil in transformer can persistently rise，When temperature of oil in transformer rises to the Faulty Temperature H of default，The standby switch K3 that controls closes，The coil of the second catalyst KM2 obtains electric，Then the first normally opened node and the second normally opened node of the second catalyst KM2 closes，Standby cooler M2 begins to cool down transformator，Temperature of oil in transformer declines，Although the standby switch K3 that controls disconnects，But the second catalyst is in self-locking state，Standby cooler M2 can cool down transformator always，Therefore，When can avoid fault, temperature of oil in transformer rises the transformator tripping operation caused always and stops transport，Or the probability of high temperature failure，Improve the operational reliability of power system.Standby cooler is the most out of service after can having been keeped in repair main circuit by maintainer.
In addition; a kind of transformator automatic cooling system of the present embodiment also includes thermorelay FR; its model can be TGR36-45; the heater element of thermorelay is connected in major loop between catalyst KM and cooler; normally closed interlock is connected in the main road controlling loop, for cooler is carried out overtemperature protection.
Additionally, a kind of transformator automatic cooling system of the present embodiment also includes air switch K, its model can be DZ47-63, and air switch is connected in the circuit that three-phase alternating current enters before major loop, for automatic start-stop circuit was carried out stream, overload protection.
Therefore, a kind of transformator automatic cooling system of the present utility model, by associating with temperature of oil in transformer, can be according to transformer temperature real-time implementation cooler automatic start-stop, realize transformator automatic cooling function, and without manual operation, it is achieved cooler start and stop function full automation；Further, when need not supplement heat rejecter, cooler can be closed down in time, reducing station electric consumption；At the same time it can also be when cooler circuit breaks down, automatically start standby cooler, make temperature of oil in transformer persistently to increase, it is to avoid occur that transformator tripping operation is stopped transport, or the probability of high temperature failure, improve the operational reliability of power system.
Above in conjunction with accompanying drawing, embodiment of the present utility model is explained in detail, but this utility model is not limited to above-described embodiment, in the ken that those of ordinary skill in the art are possessed, it is also possible on the premise of without departing from this utility model objective, various changes can be made.
Claims (7)
1. a transformator automatic cooling system, it is characterised in that include main circuit, control circuit, emergency power circuit and temperature measuring equipment, in described main circuit, working power is connected with cooler successively after the first fuse, the first normally opened node of catalyst；
In described control circuit, the coils connected in series connection of automatic switch module and described catalyst is followed by both ends of power；
In described emergency power circuit, working power is connected with standby cooler successively after the second fuse, backup circuit breaker；
Described automatic switch module includes the second normally opened node of shutdown switch, activate switch and described catalyst, the auxiliary contact series connection of described shutdown switch and described catalyst；
Described temperature measuring equipment is for the oil temperature of measuring transformer, and measurement result exports the control end of described shutdown switch and described activate switch；Described shutdown switch and described activate switch are temperature controlled normal open switch, and described shutdown switch is connected with described temperature measuring equipment with the control end of described activate switch.
A kind of transformator automatic cooling system the most according to claim 1, it is characterised in that in described automatic switch module, described activate switch is connected in parallel on the auxiliary contact two ends of described catalyst KM1.
A kind of transformator automatic cooling system the most according to claim 1, it is characterised in that in described automatic switch module, described activate switch is connected in parallel on the circuit two ends that the auxiliary contact series connection of described shutdown switch and described catalyst is formed.
A kind of transformator automatic cooling system the most according to claim 1, it is characterized in that, when the oil temperature of transformator is increased to more than n, described shutdown switch closes, when the oil temperature of transformator is increased to more than m, described activate switch closes, and described n is the temperature return value of transformator, described m is the desired temperature of transformator, and described desired temperature m is more than temperature return value n.
A kind of transformator automatic cooling system the most according to claim 1, it is characterised in that when the oil temperature of transformator is more than system highest setting temperature H, described backup circuit breaker automatically closes and is kept closed until manually recovering.
A kind of transformator automatic cooling system the most according to claim 5, it is characterized in that, also include emergency control circuit, in described emergency control circuit, after standby the second normally opened node parallel connection controlling switch and the second catalyst, it is connected to both ends of power with the coils connected in series of the second catalyst；Described backup circuit breaker is the first normally opened node of the second catalyst, and the described standby switch that controls is for setting the closed temperature normal open switch as H, and the described standby control end controlling switch is connected with described temperature measuring equipment.
A kind of transformator automatic cooling system the most according to claim 1, it is characterized in that, also including that thermorelay FR, the heater element of described thermorelay FR are connected in described main circuit, the normally closed interlock of described thermorelay FR is connected in the main circuit of described control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620079447.7U CN205507574U (en) | 2016-01-27 | 2016-01-27 | Transformer automatically cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620079447.7U CN205507574U (en) | 2016-01-27 | 2016-01-27 | Transformer automatically cooling system |
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| Publication Number | Publication Date |
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| CN205507574U true CN205507574U (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620079447.7U Expired - Fee Related CN205507574U (en) | 2016-01-27 | 2016-01-27 | Transformer automatically cooling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575616A (en) * | 2016-01-27 | 2016-05-11 | 国网山西省电力公司运城供电公司 | Automatic cooling system for transformer |
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2016
- 2016-01-27 CN CN201620079447.7U patent/CN205507574U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575616A (en) * | 2016-01-27 | 2016-05-11 | 国网山西省电力公司运城供电公司 | Automatic cooling system for transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20190127 |