CN215599543U - Integrated control system for transformer cooler - Google Patents
Integrated control system for transformer cooler Download PDFInfo
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- CN215599543U CN215599543U CN202121377846.9U CN202121377846U CN215599543U CN 215599543 U CN215599543 U CN 215599543U CN 202121377846 U CN202121377846 U CN 202121377846U CN 215599543 U CN215599543 U CN 215599543U
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Abstract
An integrated control system of a transformer cooler comprises an automatic control system and a manual control system; the automatic control system comprises a controller, a voltage relay, a main electric operation switch and a standby electric operation switch, wherein the voltage relay, the main electric operation switch and the standby electric operation switch are connected with the controller; the controller is also connected with a plurality of coolers, a transformer and a remote monitoring system; the main electric operating switch and the standby electric operating switch are also connected with the cooler; the voltage relay comprises a first voltage relay arranged between the main power supply and the controller and a second voltage relay arranged between the standby power supply and the controller. The utility model aims to solve the technical problems that the start-stop control and the power supply switching control of the transformer cooler are realized by different control equipment, the cost is high, and the cooler full-stop risk is high due to the failure of the control equipment.
Description
Technical Field
The utility model belongs to the technical field of power transformation equipment and auxiliary equipment thereof, and particularly relates to an integrated control system of a transformer cooler.
Background
Common cooling modes of the power transformer include oil-immersed self-cooling, oil-immersed air-cooling, forced oil-circulated water-cooling and the like. Except the oil-immersed self-cooling mode, the other three coolers comprise a power part and a control part. The power part is usually supplied with power by a 2-path alternating current 380V power supply through a power supply switching device for an oil pump, a fan or a water valve of the cooler, and the control part is usually controlled by a relay combination or a programmable controller (PLC) to start and stop the oil pump or the fan of the cooler and control the on-off of the water valve of the cooler. In engineering application, a power supply switching device of a power part has high failure rate and does not have a self-checking function, an alarm signal cannot be sent out after a failure occurs, and operation and maintenance personnel can find that the cooler is completely stopped to cause the shutdown of a transformer only after the failure of power supply switching; the control part is usually realized by a relay combination mode or a PLC control mode. Because PLC degree of automation is high, the fault rate is low, the relay combination mode has gradually been replaced by the PLC control mode, moreover, when PLC control circuit and manual control circuit are relatively independent, even PLC broke down, the fortune dimension personnel also can switch to the manual control state, let PLC withdraw from the operation, let the cooler continue to keep the running state through manual operation, the transformer also can continue normal operating.
In view of the fact that the existing PLC has strong operation performance, if the power supply switching control of the power part is realized by the PLC, the power supply switching device with high failure rate can be eliminated, and the power circuit switching control is more reliable. And after the PLC breaks down, an alarm signal can be triggered, and operation and maintenance personnel can find and process the fault in time, so that the complete stop of the cooler and the shutdown of the transformer are avoided.
Disclosure of Invention
The utility model aims to solve the technical problems that the start-stop control and the power supply switching control of a transformer cooler are realized by different control equipment, the cost is high, and the full stop risk of the cooler is high due to the failure of the control equipment.
An integrated control system of a transformer cooler comprises an automatic control system and a manual control system, and is connected with a plurality of groups of coolers, transformers and remote monitoring systems;
the automatic control system comprises a controller, a voltage relay, a main electric operation switch and a standby electric operation switch, wherein the voltage relay, the main electric operation switch and the standby electric operation switch are connected with the controller;
the controller is also connected with a plurality of coolers, a transformer and a remote monitoring system;
the voltage relay comprises a first voltage relay arranged between the main power supply and the main electric operation switch and a second voltage relay arranged between the standby power supply and the standby electric operation switch.
The controller can realize the automatic control of the main electric operating switch and the standby electric operating switch according to certain control logic according to the voltage states of the power supply reflected by the first voltage relay and the second voltage relay.
The controller can also automatically control the start and stop of the coolers according to the states reflected by the coolers and the transformers and according to a certain control logic.
The main electric operating switch is arranged between the main power supply and the cooler, and the standby electric operating switch is arranged between the standby power supply and the cooler.
The main electric operating switch and the standby electric operating switch can cut off or supply power to all the coolers through opening or closing.
The manual control system comprises an electric operating switch opening and closing button group and a cooler starting and stopping button group, wherein the electric operating switch opening and closing button group is connected with a main electric operating switch and a standby electric operating switch; the cooler start-stop button group is connected with the coolers.
The electric operation switch switching-on and switching-off button group is used for controlling the main electric operation switch and the standby electric operation switch; the cooler start-stop button group is used for controlling the start or stop of the cooler.
The controller is also connected with a remote monitoring system, and the controller can transmit the monitored state of the voltage relay, the state of the electric operation switch, the working condition of the transformer and the state of the cooler to the remote monitoring system. The remote monitoring system can perform remote opening and closing operations on the electric operated switch and remote starting and stopping operations on the cooler.
Compared with the prior art, the utility model has the following technical effects:
1) the power supply loop of the transformer cooler utilizes the electric operation switch to replace the traditional switch, and the controller replaces the traditional power supply switching device, so that the automatic switching on and off of the main power supply and the standby power supply of the cooler are realized;
2) the integrated controller is used for realizing the integrated control of the power loop switching of the transformer cooler and the start and stop of the coolers.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic diagram of the system of the present invention.
Detailed Description
As shown in fig. 1, the transformer cooler integrated control system comprises an automatic control system 1 and a manual control system 2, which are connected with a plurality of groups of coolers 9, transformers 10 and remote monitoring systems 11.
The automatic control system 1 comprises a controller 3, a voltage relay connected with the controller 3, a main electric operation switch 5 and a standby electric operation switch 12.
The voltage relay includes a first voltage relay 4 provided between the main power supply and the controller 3, and a second voltage relay 6 provided between the backup power supply and the controller 3.
The controller 3 can automatically control the main electric operation switch 5 and the standby electric operation switch 12 according to certain control logic according to the voltage states of the power supply reflected by the first voltage relay 4 and the second voltage relay 6.
The controller 3 is also connected with the coolers 9 and the transformer 10, and can respectively and automatically control the start and stop of the coolers 9 according to the states reflected by the coolers 9 and the transformer 10 and a certain control logic.
The main electric operation switch 5 is arranged between the main power supply and the cooler 9, and the standby electric operation switch 12 is arranged between the standby power supply and the cooler 9.
The main electric operating switch 5 and the standby electric operating switch 12 can cut off or supply power to all the coolers 9 through opening or closing.
The manual control system 2 comprises an electric operating switch opening and closing button group 7 and a cooler starting and stopping button group 8, wherein the electric operating switch opening and closing button group 7 is used for controlling a main electric operating switch 5 and a standby electric operating switch 12; the cooler start-stop button group 8 is used for controlling the start-stop of the cooler 9.
In the automatic control mode, when the main power supply is abnormal, the first voltage relay 4 acts to send action information to the controller 3, and the controller 3 enables the main electric operation switch 5 to be separated and the standby electric operation switch 12 to be closed.
In the automatic control mode, the controller 3 can respectively control the start and stop of the coolers 9 according to the operation condition of the transformer 10; the controller 3 may monitor the operating state or the fault state of the cooler 3.
The controller 3 may monitor the operating state or the fault state of the cooler 9. The status signals of different types of coolers are different, for example:
signals of fan operation, fan stop, fan fault, environment temperature and the like of the oil immersion air-cooled cooler;
signals of oil pump operation, oil pump stop, normal oil flow, abnormal oil flow, fan operation, fan stop, fan fault, environment temperature and the like of the forced oil circulation air cooling cooler;
the forced oil circulation water cooling cooler is characterized by comprising signals of oil pump running, oil pump stopping, normal oil flow, abnormal oil flow, inlet water temperature, outlet water temperature, water valve opening, water valve closing, normal water flow, abnormal water flow, normal water pressure, abnormal water pressure, cooler leakage and the like.
The controller 3 receives the switching position state of the high-low voltage side of the transformer 10, the oil surface temperature of the transformer, the winding temperature of the transformer, the switching-in signal or the analog quantity signal of the load current of the transformer, judges the operation condition of the transformer 10, and then the controller 3 respectively sends out a starting and stopping control instruction to each group of coolers 9 through switching-out relays to increase and decrease the running number of the coolers.
The controller 3 is further connected with a remote monitoring system 11, the controller 3 can transmit the monitored working condition of the transformer 10 and the monitored state of the cooler 9 to the remote monitoring system 11, and the remote monitoring system 11 can remotely operate the on/off of the cooler 9 and the on/off of the main electric operating switch 5 and the standby electric operating switch 12 through the controller 3.
When the automatic control system has a fault or needs a manual test, the main electric operating switch 5 and the standby electric operating switch 12 are operated by the electric operating switch switching-on and switching-off button group 7 in the manual control system 2, which is specifically as follows:
the main electric operating switch 5 or the standby electric operating switch 12 can be disconnected by pressing the opening button, so that the corresponding power supply loop is opened;
when the closing button is pressed, the main electric operating switch 5 or the standby electric operating switch 12 can be closed, and the corresponding power supply loop supplies power to the cooler 9.
When the automatic control system fails or manual test is needed, the coolers 9 are respectively controlled by the cooler start-stop button group 8 in the manual control system 2. Each group of start and stop buttons in the cooler start and stop button group 8 corresponds to a group of coolers. Pressing a start button of a group activates the group of coolers and pressing a stop button of a group deactivates the group of coolers.
In a more specific configuration:
wherein, all the equipment of the automatic control system 1 and the manual control system 2 are installed in 1 electric panel cabinet.
The controller 3 is an integrated controller, specifically adopts a PLC (programmable logic controller), specifically adopts a south Ray relay protection PCS-9150G process control system, realizes data acquisition and control by a south Ray relay protection PR200G controller module and an I/O (input/output) module thereof, realizes functions of engineering creation, algorithm configuration and the like by south Ray relay protection PCS-SmartIC configuration software, and realizes man-machine interaction by south Ray relay protection PCS-ICCS monitoring software and a background. PCS-9150G is hard-wired to other devices. The I/O module comprises an AI208 analog quantity input module, an AI508 temperature detector input module, a DI232 switching quantity input module, a DO216 switching quantity output module, a TB32P universal terminal board, a PDI32TBP switching quantity input terminal board, a PDOAC16TBP switching quantity output alternating current relay terminal board and the like, and the PR200G controller module and the I/O module thereof are connected with the controller base BS301 through an IO base BS 302.
The voltage relay can adopt a Schneider RM22TR33 relay, has the functions of phase sequence, undervoltage and overvoltage monitoring, is connected to a power supply loop through hard wiring, when the ground voltage of the main power supply or the standby power supply is abnormal, the node of the first voltage relay 4 or the second voltage relay 6 acts, and the node is connected to a switching value input terminal board of the controller 3 through hard wiring to send an action signal to the controller 3.
The main electrically operated switch 5 and the standby electrically operated switch 12 can be made of schneider NSX60F plastic shell breakers, and are connected with the cooler 9 through power cables. Under normal conditions, the main electric operating switch 5 is switched on, the standby electric operating switch 12 is switched off, and the main power supply supplies power to the cooler 9. The position node of the main electric operation switch 5 is connected to the switching value input terminal board of the controller 3 through hard wiring. The switch value output AC relay terminal board of the controller 3 is connected with the electric operation structure of the main electric operation switch 5 and the standby electric operation switch 12 through hard wiring. If the voltage of the main power supply is abnormal, the first voltage relay 4 sends an action signal to the controller 3, and the controller 3 sends a brake-separating operation instruction to the electric operation mechanism of the main electric operation switch 5 to disconnect the main electric operation switch 5. After the main electric operating switch 5 is successfully opened, an opening position signal is sent to the controller 3, the controller 3 sends a closing operation instruction to the electric operating mechanism of the standby electric operating switch 12, the standby electric operating switch 12 is closed, and the standby power supply supplies power to the cooler 9.
The controller 3 is connected with a high-voltage side switch position relay, a low-voltage side switch position relay, a transformer oil surface temperature detector, a transformer winding temperature detector and a transformer load current transmitter of the transformer 10 through hard wiring. Wherein, the high-voltage side switch position relay and the low-voltage side switch position relay are connected to the switch value input terminal board of the controller 3. The transformer oil surface temperature detector, the transformer winding temperature detector and the transformer load current transducer are connected to a universal terminal board of the controller 3.
The controller 3 is hard-wired to make electrical connections to the various cooling devices of the chiller 9. The controller 3 not only monitors the operation state and the fault state of the cooler 9, but also sends a start-stop control instruction to the cooler 9 to increase or decrease the number of the coolers in operation.
The various switching value signals and analog value signals of the cooler 9 are respectively connected to the switching value input terminal board and the universal terminal board of the controller 3, such as: switching values of the oil-immersed air-cooled cooler such as fan operation, fan stop, fan fault and the like are connected to a switching value input terminal board of the controller 3, and analog values such as ambient temperature are connected to a universal terminal board of the controller 3; the switching value of the forced oil circulation air-cooled cooler such as oil pump operation, oil pump stop, normal oil flow, abnormal oil flow, fan operation, fan stop, fan failure and the like is connected to the switching value input terminal board of the controller 3; a universal terminal board for accessing analog quantities such as ambient temperature and the like to the controller 3; the switching values of the forced oil circulation water-cooling cooler, such as the operation of an oil pump, the stop of the oil pump, the normal oil flow, the abnormal oil flow, the opening of a water valve, the closing of a water valve, the normal water flow, the abnormal water flow, the normal water pressure, the abnormal water pressure, the leakage of the cooler and the like, are connected to a switching value input terminal board of the controller 3; analog quantities such as inlet water temperature, outlet water temperature and the like are connected to a universal terminal board of the controller 3. The switching value signal and the analog value signal can be used as an auxiliary criterion for starting and stopping the cooler 9 after being received by the controller 3, and can also be transmitted to a remote monitoring system 11 in a communication mode.
The controller 3 determines the current operation condition of the transformer 10 according to various signals of the transformer 10, and sends a start-stop control instruction to the cooler 9 after the analysis of a control logic program of the controller, so as to increase or decrease the operation number of the coolers. The control logic program of the controller 3 generally implements functions such as alternate operation of a plurality of groups of coolers, increasing or decreasing the number of coolers as the main transformer load current increases or decreases, and increasing or decreasing the number of coolers as the transformer oil surface temperature and the winding temperature increase or decrease. When the controller 3 fails, the current operation state of each group of coolers 9 should be maintained to avoid affecting the transformer.
The control unit 3 is used as a start-stop auxiliary criterion for the cooler 9 as a function of the various signals of the connected cooler 9. If a fault signal such as a fan fault, an oil flow abnormality, a water pressure abnormality and the like is sent to the controller 3 by one group of coolers, the controller 3 should start the other group of standby coolers to avoid influencing the cooling effect. If one group of coolers has a fault signal such as cooler leakage and the like sent to the controller 3, the controller 3 should stop the fault cooler and start the other group of standby coolers, so as to avoid accident expansion and influence on the cooling effect.
The controller 3 can be connected with the remote monitoring system 11 through an optical fiber or a network cable, and transmits the monitored states of the main electric operating switch 5, the standby electric operating switch 12, the cooler 9 and the working condition of the transformer 10 to the remote monitoring system 11 in a communication mode, and simultaneously receives the remote monitoring system 11 to carry out remote opening and closing operations on the main electric operating switch 5 and the standby electric operating switch 12 and carry out remote starting and stopping operations on the cooler 9.
The manual control system 2 is composed of an electrically operated switch opening and closing button group 7 and a cooler starting and stopping button group 8. The electrically operated switch opening and closing button group 7 can be realized by Irex 10/R and 10/G and is connected to the opening and closing control loop of the main electrically operated switch 5 and the standby electrically operated switch 12 through hard wires. Each electric operation switch corresponds to a closing button and an opening button, wherein 10/R is a red closing button, 10/G is a green opening button, when the closing button is pressed, the corresponding electric operation switch is closed, and when the opening button is pressed, the corresponding electric operation switch 5 is disconnected. The cooler start-stop button 7 is implemented by Irex 11/R, 11/G, and is connected to the start-stop control loop of the cooler 5 by hard wiring. Each cooler group 9 corresponds to a start button and a stop button, wherein 11/R is a red start button and 10/G is a green stop button, and when the start button is pressed, the corresponding cooler 9 is started, and when the stop button is pressed, the corresponding cooler 9 is stopped.
Claims (7)
1. The transformer cooler integrated control system is characterized by comprising an automatic control system (1) and a manual control system (2);
the automatic control system (1) comprises a controller (3), a voltage relay connected with the controller (3), a main electric operation switch (5) and a standby electric operation switch (12); the controller (3) is also connected with a plurality of coolers (9), a transformer (10) and a remote monitoring system (11);
the voltage relay comprises a first voltage relay (4) arranged between the main power supply and the controller (3) and a second voltage relay (6) arranged between the standby power supply and the controller (3);
the manual control system (2) comprises an electric operating switch switching-on and switching-off button group (7) and a cooler starting and stopping button group (8), wherein the electric operating switch switching-on and switching-off button group (7) is used for switching-on and switching-off control of a main electric operating switch (5) and a standby electric operating switch (12); the cooler start-stop button group (8) is used for controlling the start and stop of the cooler (9).
2. The system of claim 1, wherein: the controller (3) can automatically control the main electric operation switch (5) and the standby electric operation switch (12) according to certain control logic according to the voltage states of the power supply reflected by the first voltage relay (4) and the second voltage relay (6);
the controller (3) can also respectively and automatically control the start and stop of the coolers (9) according to the states reflected by the coolers (9) and the transformer (10) and a certain control logic.
3. The system of claim 1, wherein: the main electric operating switch (5) is arranged between the main power supply and the coolers (9), and the standby electric operating switch (12) is arranged between the standby power supply and the coolers (9).
4. The system of claim 3, wherein: the main electric operating switch (5) and the standby electric operating switch (12) can be used for powering off or supplying power to all the coolers (9) through switching-off or switching-on.
5. The system of claim 1, wherein: the manual control system (2) comprises an electrically operated switch opening and closing button group (7) and a cooler starting and stopping button group (8); the electric operation switch switching-on and switching-off button group (7) is connected with the main electric operation switch (5) and the standby electric operation switch (12); the cooler start-stop button group (8) is connected with a plurality of coolers (9).
6. The system according to claim 5, characterized in that the electrically operated switch switching-on and switching-off button group (7) is used for switching-on and switching-off control of the main electrically operated switch (5) and the standby electrically operated switch (12); the cooler start-stop button group (8) is used for controlling the start and stop of the cooler (9).
7. The system according to claim 1, characterized by further comprising a remote monitoring system (11), wherein the remote monitoring system (11) is connected with the controller (3), the controller (3) can transmit the monitored working condition of the transformer and the monitored state of the cooler to the remote monitoring system (11), and the remote monitoring system (11) can remotely control the on/off of the cooler (9) and the switching-on and switching-off of the main electrically operated switch (5) and the standby electrically operated switch (12) through the controller (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121377846.9U CN215599543U (en) | 2021-06-21 | 2021-06-21 | Integrated control system for transformer cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121377846.9U CN215599543U (en) | 2021-06-21 | 2021-06-21 | Integrated control system for transformer cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215599543U true CN215599543U (en) | 2022-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121377846.9U Active CN215599543U (en) | 2021-06-21 | 2021-06-21 | Integrated control system for transformer cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215599543U (en) |
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2021
- 2021-06-21 CN CN202121377846.9U patent/CN215599543U/en active Active
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