CN208156491U - A kind of main transformer forced-oil-air cooling intelligence control system - Google Patents
A kind of main transformer forced-oil-air cooling intelligence control system Download PDFInfo
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- CN208156491U CN208156491U CN201820481203.0U CN201820481203U CN208156491U CN 208156491 U CN208156491 U CN 208156491U CN 201820481203 U CN201820481203 U CN 201820481203U CN 208156491 U CN208156491 U CN 208156491U
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Abstract
The utility model discloses a kind of main transformer forced-oil-air cooling intelligence control systems, including：Communication modes connection is respectively adopted in control unit, electric quantity acquisition unit, analog acquisition unit, switch acquisition unit, Analog control unit, control output unit, communication unit, storage and display unit, described control unit and electric quantity acquisition unit, analog acquisition unit, switch acquisition unit, Analog control unit, control output unit, communication unit, storage and display unit, electromagnetism double-throw switch is connected with control output unit and switch acquisition unit respectively, and Analog control unit is connected with frequency converter.Replace traditional various relays with PLC, reduce failure rate, install electromagnetic type double-throw switch additional to replace contactor, the switching time and failure rate for reducing AC power source inlet wire using control unit monitor each component working condition in real time.
Description
Technical field
The utility model relates to automation control area, especially a kind of main transformer forced-oil-air cooling intelligence control system.
Background technique
Currently, country 110Kv/220kV and the main transformer (hereinafter referred to as main transformer) of the above substation are generally using pressure
The device of oil circulation, the type of cooling of forced ventilation, control main transformer High yield combinations is all made of traditional relay logic control.
Though being able to achieve part automatic control function, function is very not perfect, and control loop is complicated, and component is numerous, Frequent Troubles, behaviour
It is complicated to make maintenance, has not adapted to the integrated automation of transformation stations and the unattended requirement of substation, a kind of especially existing master
Become High yield combinations control device and still use traditional relay control mode, using artificially manually controlling, makes an inspection tour monitoring, with
And the control methods such as experience control, prevent power transformation operation background monitoring center from monitoring the work of main transformer High yield combinations in real time
State and fault condition.
State Grid Corporation of China requires, and the working power of main transformer cooling system should have three-phase-voltage monitoring, any phase event
When hindering power loss, it should ensure that and automatically switch to backup power source power supply.Forced oil-circulation transformer cooler system two-way incoming power
Should have independent power monitoring function, can reliably reflect the failures such as incoming power decompression, under-voltage, over-voltage, phase shortage, and issue report
Alert signal.And traditional main transformer forced oil wind cooling controller can only be to two-way inlet wire due to using traditional relay logic control
Power supply has carried out pressure and has monitored without pressure, cannot achieve above-mentioned requirements.
State Grid Corporation of China requires, and the latent oil pump startup of forced oil-circulation transformer should enable by platform, and time delay interval should be
30s or more, to prevent gas relay malfunction.And traditional main transformer forced-oil-air cooling control system controls each group by change-over switch
The switching of cooler, can only be by the way of manually come sequence starting.If manual operation is made mistakes, time relay malfunction
Make or the time relay damages, will cause multiple work coolers while starting, the malfunction of gas relay in main transformer, into
And main transformer incoming switch is caused to trip, cause main transformer to have a power failure.
Traditional main transformer forced-oil-air cooling control system, when cooler is run, cooler oil-immersed pump and exhaust fan are simultaneously at full speed
Starting, when winter operation, since environment temperature is low, when wind is big, exhaust fan full speed running forced air cooling can make oil temperature drop more
It is low, certain influence is generated to kinematic viscosity, the Water in oil amount of transformer oil, is unfavorable for the safe operation of main transformer, and
And the full speed running of exhaust fan, it will also result in certain power consumption, increase operating cost.
Utility model content
The purpose of this utility model is solving the above the deficiencies in the prior art, provides a kind of main transformer forced-oil-air cooling intelligent control
System replaces traditional various relays with PLC, reduces failure rate, installs electromagnetic type double-throw switch additional to replace contactor, subtracts
The switching time of few AC power source inlet wire and failure rate monitor each component working condition in real time using control unit.
In order to achieve the above object, providing following technical scheme：
A kind of main transformer forced-oil-air cooling intelligence control system, including：
Control unit：For acquiring the data of each subelement of junior in real time, data management and integration are carried out, is carried out at data
Reason, alarm and fault verification, logic control, and with communication unit real time communication, superior background system sends data, in reception
Grade instruction, and assign instruction to each subelement and execute, it can be direct using the output of PLC control module, while PLC control module
Control Analog control unit and control output unit；
Electric quantity acquisition unit：For acquiring the voltage, electric current, frequency parameter of two-way incoming power, realize that incoming power loses
Pressure, under-voltage, over-voltage and the monitoring of open-phase fault and alarm；
Analog acquisition unit：With main transformer oil sensor, main transformer load transmitter, temperature sensor, air velocity transducer
Connection, for collected each analog signals to be converted into digital quantity signal；
Switch acquisition unit：For real-time monitoring electromagnetic type double-throw switch, cooler oil-immersed pump, fan and alternating current inlet wire
Breaker group, oil pump power supply main breaker, fan power supply main breaker, cooler oil pump breaker group, cooler fan open circuit
The operating status and fault alarm of device group；
Analog control unit：For the control instruction that reception control unit is sent, and control instruction is converted into 4-
20mA or 0-10V signal, to frequency converter output frequency adjustment signal, to adjust rotation speed of the fan；
Control output unit：Reception control unit control instruction, and directly control electromagnetic type double-throw switch, cooler oil pump
Contactor group, the movement of cooler fan contactor；
Communication unit：Using 61850 protocol converters, for being communicated in real time with control unit, by control unit MODBUS-
Rtu protocol data are converted to IEC61850 agreement, and connect from the background with substation, and facility information is uploaded to backstage in real time is
System, and receive control instruction and the execution of background system；
Storage and display unit：For the collected real time data of real-time display control unit and state, historical data and shape
State, accident early warning, alarm, parameter check, failure wave-recording function, can realize operation and control using touch screen, facilitate O&M people
Member checks at scene the operating parameter, state and fault message of main transformer forced-oil-air cooling control system；
Described control unit and electric quantity acquisition unit, analog acquisition unit, switch acquisition unit, Analog control list
Member, control output unit, communication unit, storage and display unit are respectively adopted communication modes connection, electromagnetism double-throw switch respectively with
Control output unit is connected with switch acquisition unit, and Analog control unit is connected with frequency converter.
Preferably, the alternating current inlet wire breaker group is connected with electromagnetic type double-throw switch.
Preferably, the cooler oil pump breaker group is connected with cooler oil pump contactor group, the cooler oil pump
Contactor group is connected with cooler oil pump electrothermal relay group, and the cooler oil pump electrothermal relay group is connected with oil pump.
Preferably, the cooler fan breaker group is connected with cooler fan electrothermal relay group, cooler fan heat
Relay group is connected with fan.
Preferably, the fan power supply main breaker is connected with frequency converter.
The beneficial effects of the utility model are：Replace traditional relay to control with the control unit of PLC, reduces failure
Rate installs electromagnetic type double-throw switch additional to replace contactor, reduces switching time and the failure rate of AC power source inlet wire, and installing is respectively adopted
Collect unit real-time monitoring alternating current inlet wire power supply, main transformer oil, main transformer load, power supply switching state, cooler operating status, each disconnected
The parameters such as road device operating status, main transformer ambient temperature and wind speed；The switching of double-throw switch is driven by control output unit,
The sequence of movement of cooler oil-immersed pump and fan；Attached with frequency converters control exhaust fan, by main transformer oil, load, environment temperature,
The Parameters variations such as wind speed automatically adjust frequency converter output frequency by main control unit, adjust rotation speed of the fan；By touch screen come real
When display control unit institute integrated management each operating parameter and operating status and historical data；And by communication unit control
The real time data and historical data of unit acquisition are uploaded to substation backstage.
Detailed description of the invention
Fig. 1 is the utility model control system schematic diagram；
Fig. 2 is one air cooling system circuit diagram of embodiment.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment be only the utility model a part of the embodiment, instead of all the embodiments.Usually described in attached drawing here
It can arrange and design with a variety of different configurations with the component of the utility model embodiment shown.Therefore, below to
The detailed description of the embodiments of the present invention provided in attached drawing is not intended to limit the model of claimed invention
It encloses, but is merely representative of the selected embodiment of the utility model.Based on the embodiments of the present invention, those skilled in the art exist
Every other embodiment obtained under the premise of creative work is not made, is fallen within the protection scope of the utility model.
It should be noted that term " first ", " second ", " third " are only used for describing in the description of the present invention,
Purpose is not understood to indicate or imply relative importance.
In addition, in the description of the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
Connection inside element.For the ordinary skill in the art, it can understand that above-mentioned term is practical at this with concrete condition
Concrete meaning in novel.
A kind of main transformer forced-oil-air cooling intelligence control system as shown in Figure 1, including：
Control unit 200：For acquiring the data of each subelement of junior in real time, data management and integration are carried out, is counted
According to processing, alarm and fault verification, logic control, and with communication unit real time communication, superior background system send data, connect
Superior instructions are received, and instruction is assigned to each subelement and executes, using PLC control module, while the output of PLC control module
Analog control unit and control output unit can be directly controlled；
Electric quantity acquisition unit 203：For acquiring the voltage, electric current, frequency parameter of two-way incoming power, incoming power is realized
Decompression, under-voltage, over-voltage and the monitoring of open-phase fault and alarm；
Analog acquisition unit 204：It is sensed with main transformer oil sensor, main transformer load transmitter, temperature sensor, wind speed
Device connection, for collected each analog signals to be converted into digital quantity signal；
Switch acquisition unit 205：For real-time monitoring electromagnetic type double-throw switch, cooler oil-immersed pump, fan and exchange
Incoming breaker group, oil pump power supply main breaker, fan power supply main breaker, cooler oil pump breaker group, cooler fan
The operating status and fault alarm of breaker group；
Analog control unit 206：For the control instruction that reception control unit is sent, and control instruction is converted into 4-
20mA or 0-10V signal, to frequency converter output frequency adjustment signal, to adjust rotation speed of the fan；
Control output unit 207：Reception control unit control instruction, and directly control electromagnetic type double-throw switch, cooler
Oil pump contactor group, the movement of cooler fan contactor；
Communication unit 201：Using 61850 protocol converters, for being communicated in real time with control unit, by control unit
MODBUS-RTU protocol data is converted to IEC61850 agreement, and 208 connect from the background with substation, and facility information is uploaded in real time
To background system, and receive control instruction and the execution of background system；
Storage and display unit 202：For the collected real time data of real-time display control unit and state, historical data and
State, accident early warning, alarm, parameter check, failure wave-recording function, can realize operation and control using touch screen, facilitate O&M
Personnel on site checks the operating parameter, state and fault message of main transformer forced-oil-air cooling control system；
Described control unit 200 and electric quantity acquisition unit 203, analog acquisition unit 204, switch acquisition unit 205,
Communication modes are respectively adopted in Analog control unit 206, control output unit 207, communication unit 201, storage and display unit 202
Connection, electromagnetism double-throw switch are connected with control output unit and switch acquisition unit respectively, Analog control unit and change
Frequency device is connected.
Embodiment one
Air cooling system circuit device as shown in Figure 2, including：First incoming power 1, the second incoming power 2, electromagnetism double-throw are opened
Close ATS, the first alternating current inlet wire circuit breaker Q K1, the second alternating current inlet wire circuit breaker Q K2, the first bus 10, oil pump power supply main breaker
QF1, fan power supply main breaker QF2, frequency converter B PQ, the second bus 11, it is third bus 12, cooler oil pump breaker group, cold
But device fan breaker group, cooler oil pump contactor group, cooler fan contactor group, cooler oil pump electrothermal relay group,
Cooler fan electrothermal relay group, oil pump and fan.
Cold-zone oil pump breaker group includes the first cold-zone oil pump breaker YK1, the second cold-zone oil pump breaker YK2, third
Cold-zone oil pump breaker YK3 and the 4th cold-zone oil pump breaker YK4；Cooler oil pump electrothermal relay group includes the first cooler oil
Pump electrothermal relay YR1, the second cooler oil pump electrothermal relay YR2, third cooler oil pump electrothermal relay YR3 and the 4th cooler
Oil pump electrothermal relay YR4；Cooler fan electrothermal relay group includes the first cooler fan electrothermal relay FR1, the second cooler
Fan electrothermal relay FR2, third cooler fan electrothermal relay FR3 and the 4th cooler fan electrothermal relay FR4；Cooler wind
Fanning breaker group includes the first cooler fan breaker FK1, the second cooler fan breaker FK2, third cooler fan
Breaker FK3 and the 4th cooler fan breaker FK4, cooler oil pump contactor group include the first cooler oil pump contactor
YC1, the second cooler oil pump contactor YC2, third cooler oil pump contactor YC3 and the 4th cooler oil pump contactor YC4,
Cooler fan contactor group is cold including the first cooler fan contactor FC1, the second cooler fan contactor FC2, third
But device fan contactor FC3 and the 4th cooler fan contactor FC4, oil pump include the first oil pump, the second oil pump, third oil pump
With the 4th oil pump；Fan includes the first fan, the second fan, third fan and the 4th fan.
First alternating current inlet wire circuit breaker Q K1 is connected with the first incoming power 1, the second alternating current inlet wire circuit breaker Q K2 and second
Incoming power 2 is connected, the first alternating current inlet wire circuit breaker Q K1 and the second alternating current inlet wire circuit breaker Q K2 and electromagnetism double-throw switch ATS
It is connected, electromagnetism double-throw switch ATS is connect with the first bus 10, oil pump power supply main breaker QF1, fan power supply main breaker QF2
It is connect with the first bus 10, the oil pump power supply main breaker QF1 other end is connect with the second bus 11, fan power supply main breaker
The QF2 other end is connect with frequency converter B PQ, and the frequency converter B PQ other end is connect with third bus 12, cold-zone oil pump breaker group and the
The connection of two buses 11, cooler fan breaker group are connect with third bus 12, cold-zone oil pump breaker group and cooler oil pump
Contactor group is connected, and cooler oil pump contactor group is connected with cooler oil pump electrothermal relay group, cooler oil pump electrothermal relay
Group is connected with oil pump, and cooler fan breaker group is connected with cooler fan electrothermal relay group, cooler fan electrothermal relay
Group is connected with fan, i.e. the first cold-zone oil pump breaker YK1 is connected with the first cooler oil pump contactor YC1, the first cooler
Oil pump contactor YC1 is connected with the first cooler oil pump electrothermal relay YR1, the first cooler oil pump electrothermal relay YR1 and first
Oil pump is connected, and the first cooler fan breaker FK1 is connected with the first cooler fan electrothermal relay FR1, the first cooler wind
Fan electrothermal relay FR1 is connected with the first fan, other are similarly.Wherein, the first oil pump and the first work cooling of the first fan composition
Device 101, the second oil pump and the second fan form spare cooler 102, third oil pump and the second work cooling of third fan composition
Device 103, the 4th oil pump and the 4th fan form auxiliary cooler 104, and the first bus 10 is power lead, and the second bus 11 is oil
Bus is pumped, third bus 12 is fan bus.
The course of work：
Control unit 200 passes through electric quantity acquisition unit 203, real-time monitoring the first incoming power 1 and the second incoming power 2 ginseng
Number, and processing and operation are carried out to data, when the failures such as decompression, under-voltage, over-voltage, phase shortage occurs in working power, transmission switching refers to
It enables, control output unit 207 drives electromagnetic type double-throw switch ATS movement, working power is switched to backup power source, by standby electricity
Source is the first bus, the second bus, third bussed supply.And " working power failure, in-put of spare power supply " letter is sent to backstage
Number.When control unit 200 detects working power fault recovery, transmission order-driven electromagnetic type double-throw switch ATS movement, switching
It is the first bus, the second bus, third mother power supply to working power.
Operator can set the working condition of each cooler by touch screen, i.e. the first oil pump and the first fan composition the
One work cooler 101, the second oil pump and the second fan form spare cooler 102, third oil pump and third fan composition the
Two work coolers 103, the 4th oil pump and the 4th fan form auxiliary cooler 104, and control unit 200 receives control instruction
Afterwards, by controlling output unit 207, successively start the first work cooler 101 the first cooler oil pump contactor YC1, the
One cooler fan contactor FC1, and the first cooler oil pump contactor YC1, first are detected by switch acquisition unit 205
Cooler fan contactor FC1 state confirms implementing result.Pass through 204 output signal of Analog control unit, starting simultaneously
Frequency converter B PQ work.When control unit 200 detects the first cooler oil pump contactor YC1, the first cooler fan contactor
FC1 is coincidence, is delayed after 30s, and control instruction, the third cooler oil pump contactor of starting the second work cooler 103 are issued
YC3, third cooler fan contactor FC3, and confirm implementing result, starting finishes.
When control unit 200 detects that any one work cooler breaks down out of service, start automatically spare
Cooler 102 puts into operation, and control unit 200 sends work Cooler Fault to backstage, and spare cooler 102 puts into signal,
And specific fault message is sent, such as the first work 101 failure of cooler.Operation maintenance personnel is facilitated quickly to check failure.
After control unit 200 detects that work Cooler Fault restores, instruction is sent, spare cooler 102 is exited, examined
It measures after spare cooler 102 exits, cooler of devoting oneself to work again.
Control unit 200 by analog acquisition unit 204, acquire in real time main transformer oil, load current, environment temperature,
The parameters such as wind speed, when main transformer oil or load current are higher than the upper limit, the automatic auxiliary cooler 104 that starts puts into operation, works as inspection
It measures oil temperature or when load current drops to lower limit, automatically exits from auxiliary cooler 104.
Control unit 200 passes through the parameters such as main transformer oil, load current, environment temperature, the wind speed acquired in real time, passes through fortune
It calculates, and sends instruction, by the adjusting frequency converter B PQ output frequency of Analog control unit 206, in main transformer oil or load current
It rises, frequency converter B PQ output frequency is bigger, and rotation speed of the fan is higher, otherwise reduces.When environment temperature reduces, frequency converter B PQ output is frequently
Rate reduces, and rotation speed of the fan reduces, otherwise increases.When environment temperature is lower than setting value, wind speed is increased, and rotation speed of the fan reduces, instead
Raising.Main transformer oil or load current control are the first priority, and environment temperature control is the second priority, and blast velocity control is
Third priority.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model is answered described with power
Subject to the protection scope that benefit requires.
Claims (5)
1. a kind of main transformer forced-oil-air cooling intelligence control system, which is characterized in that including：
Control unit：For acquiring the data of each subelement of junior in real time, carry out data management and integration, carry out data processing,
Alarm and fault verification, logic control, and with communication unit real time communication, superior background system send data, receive higher level
Instruction, and assign instruction to each subelement and execute, it can directly be controlled using the output of PLC control module, while PLC control module
Molding analog quantity control unit and control output unit；
Electric quantity acquisition unit：For acquiring the voltage, electric current, frequency parameter of two-way incoming power, realizes incoming power decompression, owes
Pressure, over-voltage and the monitoring of open-phase fault and alarm；
Analog acquisition unit：It is connect with main transformer oil sensor, main transformer load transmitter, temperature sensor, air velocity transducer,
For collected each analog signals to be converted into digital quantity signal；
Switch acquisition unit：For real-time monitoring electromagnetic type double-throw switch, cooler oil-immersed pump, fan and alternating current inlet wire open circuit
Device group, oil pump power supply main breaker, fan power supply main breaker, cooler oil pump breaker group, cooler fan breaker group
Operating status and fault alarm；
Analog control unit：For reception control unit send control instruction, and by control instruction be converted to 4-20mA or
0-10V signal, to frequency converter output frequency adjustment signal, to adjust rotation speed of the fan；
Control output unit：Reception control unit control instruction, and directly control electromagnetic type double-throw switch, the contact of cooler oil pump
Device group, the movement of cooler fan contactor；
Communication unit：Using 61850 protocol converters, for being communicated in real time with control unit, by control unit MODBUS-RTU
Protocol data is converted to IEC61850 agreement, and connect from the background with substation, and facility information is uploaded to background system in real time, and
Receive the control instruction of background system and execution；
Storage and display unit：For the collected real time data of real-time display control unit and state, historical data and state, thing
Therefore early warning, alarm, parameter are checked, failure wave-recording function, can realize operation and control using touch screen, facilitate operation maintenance personnel live
Check the operating parameter, state and fault message of main transformer forced-oil-air cooling control system；
Described control unit and electric quantity acquisition unit, analog acquisition unit, switch acquisition unit, Analog control unit,
Control output unit, communication unit, storage and display unit are respectively adopted communication modes connection, electromagnetism double-throw switch respectively with control
Output unit is connected with switch acquisition unit, and Analog control unit is connected with frequency converter.
2. a kind of main transformer forced-oil-air cooling intelligence control system according to claim 1, which is characterized in that the alternating current inlet wire
Breaker group is connected with electromagnetic type double-throw switch.
3. a kind of main transformer forced-oil-air cooling intelligence control system according to claim 1, which is characterized in that the cooler oil
Pump breaker group is connected with cooler oil pump contactor group, the cooler oil pump contactor group and cooler oil pump electrothermal relay
Group is connected, and the cooler oil pump electrothermal relay group is connected with oil pump.
4. a kind of main transformer forced-oil-air cooling intelligence control system according to claim 1, which is characterized in that the cooler wind
Fan breaker group is connected with cooler fan electrothermal relay group, and cooler fan electrothermal relay group is connected with fan.
5. a kind of main transformer forced-oil-air cooling intelligence control system according to claim 1, which is characterized in that the fan power supply
Main breaker is connected with frequency converter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820481203.0U CN208156491U (en) | 2018-04-08 | 2018-04-08 | A kind of main transformer forced-oil-air cooling intelligence control system |
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| CN201820481203.0U CN208156491U (en) | 2018-04-08 | 2018-04-08 | A kind of main transformer forced-oil-air cooling intelligence control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117040094A (en) * | 2023-07-24 | 2023-11-10 | 广东浩云长盛网络股份有限公司 | Cold machine power distribution guarantee control system and method based on low-voltage switching |
-
2018
- 2018-04-08 CN CN201820481203.0U patent/CN208156491U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117040094A (en) * | 2023-07-24 | 2023-11-10 | 广东浩云长盛网络股份有限公司 | Cold machine power distribution guarantee control system and method based on low-voltage switching |
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