CN220965173U - High-pressure heater control system - Google Patents
High-pressure heater control system Download PDFInfo
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- CN220965173U CN220965173U CN202322917032.5U CN202322917032U CN220965173U CN 220965173 U CN220965173 U CN 220965173U CN 202322917032 U CN202322917032 U CN 202322917032U CN 220965173 U CN220965173 U CN 220965173U
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- 230000001276 controlling effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
The utility model discloses a high-voltage heater control system which comprises a high-voltage cabinet, a power cabinet, a heater controller and a high-voltage heater, wherein a high-voltage power supply is connected to the inlet side of the high-voltage cabinet, the outlet side of the high-voltage cabinet is connected to the power cabinet and used for providing power for the power cabinet, and the power cabinet is connected to the high-voltage heater, so that the power can be output to the high-voltage heater at a constant voltage after passing through the power cabinet. The high-voltage heater control system provided by the utility model can utilize the high-voltage power supply 6KV of the transformer station as an input power supply, and the terminal voltage of the high-voltage heater serving as a load is also 6KV, so that a step-down transformer is not required to be added, and the investment of equipment is reduced; in addition, the high-voltage heater control system adopts high-voltage 6KV as output voltage, so that output current is greatly reduced, the number of electric loops is reduced, and the sections of cables and conductors and the number of power distribution cabinets are correspondingly reduced.
Description
Technical Field
The present utility model relates to a high pressure heater control system.
Background
The existing electric heating control system mainly adopts a low-voltage control system, and the voltage is usually not more than 690V. Such a control system has the following features and problems:
First, the output voltage is lower and the output current is larger. Since the transformers used are typically 10KV or 6KV, the system requires an additional step-down transformer to reduce the voltage below 690V to accommodate the low voltage control system requirements.
Second, the conductors need to have a sufficiently large current carrying capacity due to the large output current, which also results in the need to configure multiple electrical loops during electrical control.
Again, due to the increase in output current, a large power loss occurs during the power transfer, which is detrimental to improving the overall output power and efficiency of the device.
Finally, the cost of the control system is relatively high due to the various factors described above, which limits its practical application in large-scale electrical heating energy storage technology.
Disclosure of utility model
The utility model aims to provide a control system of a high-pressure heater, which aims to solve the technical problems.
The aim of the utility model can be achieved by adopting the following technical scheme:
a control system of a high-voltage heater comprises a high-voltage cabinet, a power cabinet, a heater controller and the high-voltage heater;
The wire inlet side of the high-voltage cabinet is connected with a high-voltage power supply, the wire outlet side of the high-voltage cabinet is connected with a power supply cabinet and used for providing power for the power supply cabinet, and the power supply cabinet is connected with a high-voltage heater, so that the power supply can be output to the high-voltage heater at a constant voltage after passing through the power supply cabinet;
The heater controller comprises a temperature thermocouple unit for monitoring the temperature of the high-voltage heater and a PLC unit for correspondingly controlling the power supply cabinet based on the temperature.
Preferably, the output voltage of the power cabinet is the same as the high-voltage power supply voltage at the wire inlet side of the high-voltage cabinet.
Preferably, the output voltage of the power cabinet is 6KV, which is the same as the 6KV high-voltage power supply connected to the inlet side of the high-voltage cabinet.
Preferably, the high-voltage cabinet comprises a vacuum circuit breaker, the power supply cabinet comprises a vacuum contactor, a high-voltage power supply is connected to the wire inlet side of the vacuum circuit breaker, and the wire outlet side of the vacuum circuit breaker is connected to the wire inlet side of the vacuum contactor.
Preferably, the high-voltage cabinet further comprises a voltage transformer, a current transformer, a fuse, a microcomputer comprehensive protection and an electric multifunctional meter.
Preferably, the power cabinet further comprises a current transformer, a voltage transformer, a fuse, a fast melting thyristor and a main control board.
Preferably, the heater controller further includes a relay unit connected to the PLC unit and the vacuum circuit breaker, respectively.
The beneficial technical effects of the utility model are as follows:
The high-voltage heater control system provided by the utility model can utilize the high-voltage power supply 6KV of the transformer station as an input power supply, and the terminal voltage of the high-voltage heater serving as a load is also 6KV, so that a step-down transformer is not required to be added, and the investment of equipment is reduced; in addition, the high-voltage heater control system can adopt high-voltage 6KV as output voltage, so that output current is greatly reduced, the number of electric loops is reduced, and the cross sections of cables and conductors and the number of power distribution cabinets are correspondingly reduced.
Drawings
FIG. 1 is a schematic diagram of a control system according to an embodiment of the utility model;
FIG. 2 is a primary system schematic of a high voltage cabinet according to an embodiment of the utility model;
fig. 3 is a primary system schematic of a power cabinet according to an embodiment of the utility model.
In the figure: 1-vacuum circuit breaker, 2-current transformer of high-voltage cabinet, 3-fuse of high-voltage cabinet, 4-voltage transformer of high-voltage cabinet, 8-microcomputer comprehensive protection, 9-electric multifunctional meter, 101-high-voltage cabinet, 102-power cabinet, 103-heater controller, 200-high-voltage heater, 11-vacuum contactor, 12-current transformer, 13-fuse, 14-voltage transformer, 15-fast-melting, 16-thyristor, 22-temperature thermocouple unit, 23-relay unit, 24-PLC unit.
Detailed Description
In order to make the technical solution of the present utility model more clear and obvious to those skilled in the art, the present utility model will be described in further detail with reference to examples and drawings, but the embodiments of the present utility model are not limited thereto.
As shown in fig. 1 to 3, the high-voltage heater control system provided in the present embodiment includes a high-voltage cabinet 101, a power supply cabinet 102, a heater controller 103, and a high-voltage heater 200 as a load, the high-voltage heater 200 including a plurality of groups of high-voltage electric heating cores;
The high-voltage cabinet 101 is responsible for controlling the on-off of a circuit, and timely cuts off a power supply when the circuit is short-circuited so as to ensure the reliability of the power supply;
the high-voltage cabinet 101 specifically comprises a vacuum circuit breaker 1 with an incoming line side connected with a high-voltage power supply of 6KV, wherein the outgoing line side of the vacuum circuit breaker 1 is connected with a vacuum contactor 11 of the power cabinet 102 to provide a processed power supply for the power cabinet 102, and the power cabinet 102 is connected with the high-voltage heater 200, so that the power supply can be output to the high-voltage heater 200 at a constant voltage of 6KV through the power cabinet 102;
The power cabinet 102 is responsible for precisely controlling the output voltage (0-6000 KV) and ensuring constant current, constant voltage and constant power output, so as to precisely control the required temperature of the high-voltage heater 200;
The power cabinet 102 precisely controls the output (0-100%) of the conduction angle through the thyristors, the precise control of the output power can be realized by adjusting the conduction angle of the thyristors, the thyristors connected in series adopt static and dynamic voltage-sharing control, the thyristors are in a turn-off state in the initial stage of power-on, no impact to a power grid is ensured, when the power is output, the output of the thyristors is gradually adjusted from 0, no impact is caused in the whole process, and the high-voltage heater 200 can be ensured to operate under stable and safe power supply conditions;
The heater controller 103 includes a PLC unit 24, a temperature thermocouple unit 22 and a relay unit 23, wherein the temperature thermocouple unit 22 is responsible for monitoring and collecting the actual temperature of the high voltage heater 200 and converting the temperature into an electrical signal to be inputted to the PLC unit 24, wherein the PLC unit 24 is responsible for collecting an input signal of the temperature thermocouple unit 22, a voltage and current signal of the high voltage cabinet 101, an operation signal of the power cabinet 102 and an externally issued control command signal, and based on the temperature data collected by the temperature thermocouple unit 22, the PLC unit 24 may generate a corresponding control command, for example, if the actual temperature of the high voltage heater 200 is higher than a set temperature, the PLC may generate a corresponding command, and the output power of the power cabinet 102 is reduced, thereby reducing the temperature of the heater.
In this embodiment, as shown in fig. 2, the high-voltage cabinet 101 further includes a current transformer 2, a fuse 3, a voltage transformer 4, a microcomputer comprehensive protection 8, an electric multifunctional meter 9, and a conductor copper bar;
The voltage transformer 4 converts the high voltage 6KV of the primary loop into the low voltage 100V of the secondary loop, and sends the low voltage 100V to the microcomputer comprehensive protection 8 and the electric multifunctional meter 9 for control and detection, and reduces the high voltage to a lower voltage so as to be safer and more convenient for measurement and monitoring;
"high voltage 6KV of primary loop" this is the voltage that the system outputs to the load (high voltage heater);
The "low voltage 100V converted into the secondary loop" is that the high voltage 6KV is converted into the low voltage of 100V by the voltage transformer 4, and this conversion is to monitor and measure the voltage of the system at a safer voltage level.
The step of being sent to the microcomputer comprehensive protection and electric multifunctional meter for control and detection means that the reduced 100V voltage is sent to the microcomputer comprehensive protection 8 and the electric multifunctional meter 9, the microcomputer comprehensive protection 8 can realize protection and monitoring of a circuit, and the electric multifunctional meter 9 can display electric parameters of the circuit, such as voltage, current, power and the like;
The current transformer 2 converts the large current of the primary loop into the low current 5A or 1A of the secondary loop, and sends the low current to the microcomputer comprehensive protection 8 and the electric multifunctional meter 9 for control and detection;
The fuse 3 mainly plays roles of short circuit and overload, and when the circuit of the system is short-circuited or current flows, the circuit is cut off by fusing the fuse of the fuse;
The microcomputer comprehensive protection 8 mainly collects current and voltage signals in the high-voltage power supply and the running state of the vacuum circuit breaker 1 to carry out logic operation processing with a set protection fixed value, and finally outputs corresponding control instructions to the vacuum circuit breaker 1, for example, when the current in a circuit is detected to exceed the set protection fixed value, the opening of the vacuum circuit breaker is automatically controlled, and the circuit power supply is cut off;
the electric multifunctional meter 9 collects voltage and current signals in the high-voltage power supply, and finally three-phase voltage value, current value, active and reactive power value, power factor value, frequency, harmonic and other electric parameter data are displayed on the meter after processing, and the electric multifunctional meter 9 is in communication connection with the touch screen HMI and transmits the parameters to the touch screen HMI in a communication mode, so that the user can conveniently look up and monitor the parameters.
In this embodiment, the PLC unit 24 is used as a control unit of the controller, and is mainly composed of a direct current module, a CPU module, a DI module, a DO module, an AI module and an AO module, where the PLC unit 24 is responsible for collecting an input signal of the temperature thermocouple unit 22, a voltage and a current signal of the high-voltage cabinet 101, an operation signal of the power cabinet 102 and an externally issued control command signal, and after logic operation, the PLC unit 24 outputs a control signal to the relay unit 23 and the transmitting unit, so as to control the vacuum circuit breaker 1 of the high-voltage cabinet 101 and the power regulation module of the power cabinet 102, so as to realize accurate control of the high-voltage heater 200, and a signal output to the relay unit 23 can control the vacuum circuit breaker 1 in the high-voltage cabinet 101, such as controlling on-off of the same, so as to control the supply of power, ensure that the power is provided when a problem occurs, and a signal output to the transmitting unit can control the power regulation module in the power cabinet 102, such as regulating output voltage, current, etc.
In this embodiment, as shown in fig. 3, the power cabinet 102 is composed of a vacuum contactor 11, a current transformer, a voltage transformer, a fuse, a fast melting and thyristor, a main control board, and the like;
The incoming line side of the vacuum contactor 11 is connected with the outgoing line side of the vacuum circuit breaker 1 of the high-voltage cabinet 101, and the control of the vacuum contactor 11 is given by the relay unit 23;
The voltage transformer and the current transformer of the power cabinet 102 sample voltage and telecommunication signals, and give secondary signals to the main control board to make logic judgment conditions, for example, when the detected current signals exceed a preset value, the thyristors are automatically turned off to protect the system from being damaged by overcurrent, and the main control board controls the output of the thyristors through external instructions, for example, starting and stopping instructions and power setting instructions;
The control system adopts 3 groups of thyristors connected in series to carry out voltage regulation design, and because the withstand voltage of a single thyristor is low, the requirement of a high-voltage system cannot be met, a plurality of thyristors are required to be connected in series for use, and the output conduction angle of the thyristors can be regulated between 0 and 100 percent;
the main control board controls the thyristors of each phase to be simultaneously turned on and off through optical fiber isolation triggering, so that the regulation of the output voltage, current and power of a valve group power supply is realized, and the voltage-sharing auxiliary component consists of static and dynamic voltage-sharing circuits, so that the uniformity of the off-state voltage of each group of anti-parallel thyristors is ensured;
The thyristor is controlled by a main control board, and the main control board controls the conduction angle of the thyristor output by a power given command source by an external start and stop command.
In this embodiment, as shown in fig. 1, the PLC unit 24 is used as a core of the heater control system and is responsible for the control task of the whole control system, the PLC unit 24 collects the on-site temperature thermocouple signals, performs a PID operation control algorithm according to the temperature target value of the high-voltage heater 200, performs an operation process with the set target temperature value, and outputs optimal power output data;
The PLC unit 24 carries out logic operation on the collected current and voltage signals, compares the collected current and voltage signals with the data set for protection, and timely turns off the power output data when the current and voltage signals are detected to be abnormal, so that the thyristor is ensured to be turned off timely.
In the present embodiment, the power supply cabinet 102 controls the voltage output of the high-voltage heater 200 according to a control signal from the PLC unit 24.
In this embodiment, the heating controller 103 is responsible for collecting temperature information (via temperature thermocouple signals) on site and acquiring start and stop commands from the touch screen HMI 21;
Based on the collected information and commands, the heating controller 103 calculates and controls the start, stop, and power output of the power supply cabinet 102;
meanwhile, the heating controller 103 is also responsible for feeding back information such as the field temperature, the operation and fault state of the power cabinet 102, the voltage, current and power of the high-voltage cabinet 101, and the like to the touch screen HMI21 for monitoring.
In summary, in this embodiment, the high-voltage heater control system provided in this embodiment can use the high-voltage power supply 6KV of the transformer station as the input power supply, and the terminal voltage of the high-voltage heater as the load is also 6KV, so that there is no need to increase a step-down transformer, which is helpful for reducing the investment of equipment; in addition, the high-voltage heater control system adopts high-voltage 6KV as output voltage, so that output current is greatly reduced, the number of electric loops is reduced, and the sections of cables and conductors and the number of power distribution cabinets are correspondingly reduced.
The above description is merely a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto, and any person skilled in the art will be able to apply equivalents and modifications according to the technical solution and the concept of the present utility model within the scope of the present utility model disclosed in the present utility model.
Claims (7)
1. A high-pressure heater control system, which is characterized by comprising a high-pressure cabinet (101), a power supply cabinet (102), a heater controller (103) and a high-pressure heater (200);
The high-voltage power supply is connected to the incoming line side of the high-voltage cabinet (101), the outgoing line side of the high-voltage cabinet (101) is connected to the power supply cabinet (102) and used for providing power for the power supply cabinet (102), and the power supply cabinet (102) is connected to the high-voltage heater (200) so that the power supply can be output to the high-voltage heater (200) at a constant voltage after passing through the power supply cabinet (102);
The heater controller (103) comprises a temperature thermocouple unit for monitoring the temperature of the high-voltage heater (200) and a PLC unit for correspondingly controlling the power supply cabinet (102) based on the temperature.
2. A high voltage heater control system according to claim 1, characterized in that the output voltage of the power supply cabinet (102) is the same as the high voltage power supply voltage on the incoming line side of the high voltage cabinet (101).
3. The high-voltage heater control system according to claim 2, wherein the output voltage of the power cabinet (102) is 6KV, which is the same as the 6KV high-voltage power supply connected to the incoming line side of the high-voltage cabinet (101).
4. The high-voltage heater control system according to claim 1, wherein the high-voltage cabinet (101) comprises a vacuum circuit breaker, the power supply cabinet (102) comprises a vacuum contactor, a wire inlet side of the vacuum circuit breaker is connected to a high-voltage power supply, and a wire outlet side of the vacuum circuit breaker is connected to the wire inlet side of the vacuum contactor.
5. The high voltage heater control system of claim 4, wherein the high voltage cabinet (101) further comprises a voltage transformer, a current transformer, a fuse, a microcomputer comprehensive protection and an electric multifunctional meter.
6. The high voltage heater control system of claim 4, wherein the power supply cabinet (102) further comprises a current transformer, a voltage transformer, a fuse, a fast melting and thyristor, and a main control board.
7. The high voltage heater control system of claim 4, wherein the heater controller (103) further comprises a relay unit connected to the PLC unit and the vacuum circuit breaker, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322917032.5U CN220965173U (en) | 2023-10-30 | 2023-10-30 | High-pressure heater control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322917032.5U CN220965173U (en) | 2023-10-30 | 2023-10-30 | High-pressure heater control system |
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| Publication Number | Publication Date |
|---|---|
| CN220965173U true CN220965173U (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322917032.5U Active CN220965173U (en) | 2023-10-30 | 2023-10-30 | High-pressure heater control system |
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| Country | Link |
|---|---|
| CN (1) | CN220965173U (en) |
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2023
- 2023-10-30 CN CN202322917032.5U patent/CN220965173U/en active Active
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