A PLC-based circuit breaker mechanism debugging device
The PLC-based circuit breaker mechanism debugging device solves the problem that existing technologies cannot debug voltage holding coils and fault coils, enabling comprehensive debugging and intuitive monitoring of circuit breakers, and ensuring the stability of wind farm applications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUANENG QINGNENG TONGYU POWER CO LTD
- Filing Date
- 2022-11-17
- Publication Date
- 2026-06-26
AI Technical Summary
Existing circuit breaker commissioning devices cannot effectively commission circuit breakers that include voltage holding coils and fault coils, resulting in potential fault risks in wind farm applications.
A PLC-based circuit breaker mechanism debugging device is adopted, including a PLC, a human-machine interface device, and a relay module. The voltage holding coil and the simulated fault coil can be debugged by operating the human-machine interface device, and it supports displaying the circuit breaker position indicator and monitoring the output port status, thus enhancing the intuitiveness of debugging.
It enables effective commissioning of circuit breakers, including voltage holding coils and fault coils, enhancing the intuitiveness and operability of commissioning and ensuring stable operation of circuit breakers in wind farm applications.
Smart Images
Figure CN115774190B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electrical technology, and in particular to a PLC-based circuit breaker mechanism debugging device. Background Technology
[0002] There are many circuit breakers used in wind farms. During transportation, inspection or maintenance, these circuit breakers need to be tested to ensure their integrity and prevent them from malfunctioning during use.
[0003] Current circuit breaker mechanism commissioning devices typically only allow commissioning of circuit breakers consisting of closing and opening coils. They cannot be used to commission circuit breakers that include voltage holding coils and fault coils. Therefore, to address the above issues, there is an urgent need for a circuit breaker mechanism commissioning device that can commission circuit breakers that include voltage holding coils and simulated fault coils. Summary of the Invention
[0004] This application provides a PLC-based circuit breaker mechanism debugging device. Compared to existing technologies that can only debug circuit breaker mechanisms consisting of closing and opening coils, this device solves the problem that existing technologies cannot debug circuit breaker mechanisms including voltage holding coils and fault coils. Furthermore, to facilitate operation and provide a more intuitive observation of the circuit breaker mechanism's operating status, this testing and monitoring device also includes a human-machine interface (HMI) device. By operating this HMI device, the opening, closing, and fault tripping functions of the circuit breaker mechanism can be debugged. This circuit breaker mechanism debugging device also supports displaying the circuit breaker position indicator and can monitor the status of the first output port. Based on the status of the PLC's first output port, in... Figure 3 The touchscreen interface displays the opening and closing status of the circuit breaker mechanism, making circuit breaker debugging more intuitive.
[0005] This application provides a PLC-based circuit breaker mechanism debugging device, which includes: a PLC, a human-machine interface device and a relay module electrically connected to the PLC; wherein the relay module includes a first relay KA1, a second relay KA2, and a third relay KA3; wherein the switch of KA1 is used to control whether the voltage holding coil of the circuit breaker mechanism is energized, the switch of KA2 is used to control whether the closing coil of the circuit breaker mechanism is energized, and the switch of KA3 is used to control whether the simulated fault tripping coil of the circuit breaker mechanism is energized; KA1, KA2, and KA3 are electrically connected to the first output port, the second output port, and the third output port of the PLC, respectively; the human-machine interface device is used to display a tripping control button, and when the tripping control button is pressed, the human-machine interface device sends a tripping control signal to the PLC; the PLC, upon receiving the tripping control signal, controls KA1 to de-energize through the first output port, thereby opening the switch of KA1.
[0006] The closing coil is used to close the circuit when both it and the voltage holding coil are energized; the voltage holding coil is used to control the circuit breaker mechanism to open when power is lost; and the simulated fault coil is used to control the circuit breaker mechanism to open when energized.
[0007] As an example of implementation, the human-machine interface device is further configured to display a closing control button, which, when pressed, sends a closing control signal to the PLC. The PLC, upon receiving the closing control signal, controls KA1 to be energized via a first output port, waits for a first preset time T1, then controls KA2 to be energized via a second output port, causing the switch of KA2 to close, and waits for a second preset time T2, then controls KA2 to be de-energized via a second output port, causing the switch of KA2 to open.
[0008] As an example of implementation, the human-machine interface device is also used to display a closing control button, which, when pressed, sends a closing control signal to the PLC. The PLC is also used to, upon receiving the closing control signal, control the KA2 to be energized via a second output port, causing the switch of KA2 to close, and after waiting for a second preset time T2, control the KA2 to be de-energized via the second output port, causing the switch of KA2 to open.
[0009] As an example of implementation, the human-machine interface device is also used to display a simulated fault trip button, which, when pressed, sends a simulated fault trip signal to the PLC; the PLC is also used to control the KA3 to be energized through a third output port when it receives the simulated fault trip signal, so that the switch of the KA3 is closed.
[0010] As an example of implementation, the human-machine interface device is also used to display a system fault reset button, which, when pressed, causes the human-machine interface device to send a reset signal to the PLC; the PLC is also used to, upon receiving the reset signal, control the KA1 to lose power through a first output port, thereby disconnecting the switch of the KA1.
[0011] As an example of implementation, the human-machine interface device is also used to display the circuit breaker position status; the PLC is also used to, upon receiving the closing control signal and detecting that the status of the first output port is "0", instruct the circuit breaker position status display that the circuit breaker mechanism is in the open state.
[0012] As another feasible example, the human-machine interface device is also used to display the circuit breaker position status; the PLC is also used to instruct the circuit breaker position status to display that the circuit breaker mechanism is in the closed state when the status of the first output port is detected to be "1".
[0013] As an example of implementation, the human-machine interface device is also used to display the circuit breaker position status; the PLC is also used to, after receiving the closing control signal, when monitoring that the status of the first output port is "1" and the status of the third output port is "0", indicate that the circuit breaker position status displays that the circuit breaker mechanism is in the closed state.
[0014] As an example of implementation, the circuit breaker mechanism commissioning device further includes a DC power supply module. An AC power supply module is also included; the DC power supply module is connected to the PLC and the relay module to supply power to the PLC and the relay module.
[0015] As an example of implementation, the AC power module is connected to the circuit breaker mechanism to supply power to the circuit breaker mechanism.
[0016] The technical advantages of the PLC-based circuit breaker mechanism debugging device provided in this application are as follows:
[0017] This device, designed for 220V AC circuit breakers used in wind farms, primarily comprises a voltage holding coil, a closing coil, and a simulated fault coil. It includes a PLC, a human-machine interface (HMI) device electrically connected to the PLC, and a relay module. Users can debug the circuit breaker mechanism, including the voltage holding coil and simulated fault coil, through the HMI device. This differs from existing technologies that only allow debugging of circuit breaker mechanisms consisting of closing and opening coils. The device solves the problem of existing technologies being unable to debug circuit breakers with both voltage holding and fault coils. Furthermore, the HMI device allows for debugging of the circuit breaker mechanism's opening, closing, and fault tripping functions. The circuit breaker mechanism debugging device also supports displaying the circuit breaker position indicator and monitoring the status of the first output port. Based on the status of the PLC's first output port, the device can... Figure 3 The touchscreen interface displays the opening and closing status of the circuit breaker mechanism, making circuit breaker debugging more intuitive. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a PLC-based circuit breaker mechanism debugging device according to this application;
[0019] Figure 2 This is a schematic diagram showing the connection between the switch of the relay module and the coil of the circuit breaker mechanism in the circuit breaker mechanism debugging device of this application.
[0020] Figure 3 This is a schematic diagram of the operation interface of the circuit breaker mechanism commissioning system displayed by the human-machine interface device in the circuit breaker mechanism commissioning device of this application;
[0021] Figure 4 This is the ladder diagram program built into the PLC programming tool of this application; Detailed Implementation
[0022] To make the purpose, technical solution, and advantages of this application clearer, the following will be discussed in conjunction with the appendices of this application. Figure 1-3 The technical solutions in this application are clearly and completely described. Obviously, the described embodiments are only some, not all, of the embodiments in this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0023] like Figure 1 This application provides a circuit breaker mechanism debugging device based on PLC, which may include: a PLC, and a human-machine interface device (HMI) and a relay module respectively electrically connected to the PLC;
[0024] The relay module includes a first relay KA1, a second relay KA2, and a third relay KA3. The switch of KA1 controls whether the voltage holding coil of the circuit breaker mechanism is energized; the switch of KA2 controls whether the closing coil of the circuit breaker mechanism is energized; and the switch of KA3 controls whether the simulated fault tripping coil of the circuit breaker mechanism is energized. All switches KA1, KA2, and KA3 are normally open switches. Figure 2 As shown.
[0025] KA1, KA2, and KA3 are electrically connected to the first output port, the second output port (Y10), and the third output port (Y11) of the PLC, respectively. For example... Figure 1 As shown, as an example, the first output port can be Y7, the second output port can be Y10, and the third output port can be Y11.
[0026] The human-machine interface device is used to display the trip control button. When the trip control button is pressed, the human-machine interface device sends a trip control signal to the PLC. (See reference...) Figure 3 As shown; the PLC is used to control the KA1 to lose power through the first output port when it receives the trip control signal, so that the switch of KA1 is opened. Since the switch of KA1 is connected in series with the voltage holding coil, the opening of the switch of KA1 causes the voltage holding coil to lose power, thereby causing the circuit breaker mechanism to trip.
[0027] In the embodiments of this application, such as Figure 3 As shown, the HMI can be a touch screen. The PLC and the touch screen can be connected via a communication bus.
[0028] In this embodiment of the application, the PLC can be a Xinje PLC, model XD3-24R-C.
[0029] As an example of implementation, the human-machine interface device is also used to display a closing control button, which, when pressed, sends a closing control signal to the PLC. (See reference...) Figure 3As shown, the PLC is further configured to, upon receiving the closing control signal, energize KA1 via its first output port. Since the switch of KA1 controls the voltage holding coil, energizing KA1 also energizes the voltage holding coil. After waiting for a first preset time T1, energizing KA2 via its second output port causes the switch of KA2 to close. Since the switch of KA2 controls whether the closing coil is energized, the closing coil is also energized. At this point, when both the closing coil and the voltage holding coil are energized, the circuit breaker closes. After waiting for a second preset time T2, de-energizing KA2 via its second output port causes the switch of KA2 to open, the closing coil to de-energize, and the circuit breaker remains closed. In one example, T1 can be 2-3 seconds, and T2 can be 10 seconds.
[0030] The PLC can run the ladder diagram program built into the programming tool software. The execution logic of the ladder diagram program can be referenced. Figure 4 The programming tool software can be the Xinje PLC programming tool software. When the ladder diagram program is executed, it is used to implement the following processes: When the closing control button M2 on the human-machine interface device is pressed, the PLC controls KA1 to be energized through the first output port, such as Y7. After waiting for a first preset time of 2 seconds, the PLC controls KA2 to be energized through the second output port, that is, the closing coil is also energized. At this time, the closing coil and the voltage holding coil are both energized, and the circuit breaker closes. After waiting for a second preset time of 10 seconds, the PLC controls KA2 to be de-energized through the second output port Y10, causing the switch of KA2 to open. The closing coil is de-energized, and the circuit breaker remains closed. When the opening control button M3 on the human-machine interface device is pressed, the M0 coil is energized, the normally closed switch of M0 opens, and the PLC controls KA1 to be de-energized through the first output port Y7, causing the switch of KA1 to open. Therefore, the voltage holding coil is de-energized, thereby causing the circuit breaker mechanism to open. When the simulated fault trip button M4 is pressed, the PLC controls KA3 to be energized through the third output port Y11, causing the switch of KA3 to close. Therefore, the simulated fault coil is energized, and the circuit breaker trips successfully. However, the voltage holding coil remains energized. When the system fault reset button M5 is pressed, the M10 coil is de-energized, and the normally closed switch of M10 opens. The PLC controls KA1 and KA3 to be de-energized through the first output port Y7 and the third output port Y11 respectively, causing the switches of KA1 and KA3 to open. The voltage holding coil and the simulated fault trip coil are then de-energized, and the debugging device completes its reset.
[0031] As an example of implementation, the human-machine interface device is also used to display a closing control button, which, when pressed, sends a closing control signal to the PLC. (See reference...) Figure 3 As shown, the PLC is further configured to, upon receiving the closing control signal, control KA2 to be energized via its second output port, causing the switch of KA2 to close. Since the switch of KA2 controls whether the closing coil is energized, after KA2 is energized, the closing coil is also energized, and the circuit breaker mechanism closes. After waiting for a second preset time T2, the PLC controls KA2 to be de-energized via its second output port, causing the switch of KA2 to open, the closing coil to be de-energized, and the circuit breaker mechanism to remain closed.
[0032] As an example of implementation, the human-machine interface device is also used to display a simulated fault trip button, which, when pressed, indicates that the circuit breaker mechanism has simulated a fault trip. The human-machine interface device sends a simulated fault trip signal to the PLC, as can be found in [reference needed]. Figure 3 As shown.
[0033] The PLC is also used to control KA3 to be energized through the third output port when the simulated fault trip signal is received, so that the switch of KA3 is closed. Since the switch of KA3 is connected in series with the simulated fault coil, the simulated fault coil is energized when the switch of KA3 is closed. At this time, the circuit breaker mechanism trips and the simulated fault trip is successful, but the voltage holding coil is still energized at this time.
[0034] Based on any of the foregoing embodiments, the human-machine interface device is further configured to display a system fault reset button. Since the simulated fault coil and the voltage holding coil remain energized after a simulated fault trip in the circuit breaker mechanism, further debugging requires de-energizing the simulated fault coil and the voltage holding coil, i.e., resetting them. Therefore, when the system fault reset button is pressed, the human-machine interface device sends a reset signal to the PLC. (See reference...) Figure 3 As shown.
[0035] The PLC is also used to control KA1 and KA3 to lose power through the first output port and the third output port respectively when the reset signal is received, so that the switches of KA1 and KA3 are opened. Since the switch of KA1 is connected in series with the voltage holding coil and the switch of KA3 is connected in series with the simulated fault trip coil, the switches of KA1 and KA3 are opened, and the voltage holding coil and the simulated fault trip coil are de-energized. At this time, the debugging device completes the reset.
[0036] As an example of an implementable solution, the human-machine interface device is also used to display the circuit breaker position status, such as... Figure 3 As shown, the PLC is also used to indicate the circuit breaker position status display that the circuit breaker mechanism is in the open state when the state of the first output port is detected to be "0". When the state of the first output port is detected to be "0", that is, when the first output port is in the "0" state, it indicates that KA1 is de-energized, the KA1 switch is open, and since the KA1 switch is connected in series with the voltage holding coil, the voltage holding coil is de-energized, and the circuit breaker mechanism is open. This device uses the detection of the first output port being in the "0" state to indicate the circuit breaker position status display that the circuit breaker mechanism is in the open state.
[0037] In the embodiments of this application, there are several feasible examples of displaying the circuit breaker position status when the circuit is closed.
[0038] As an example of an implementable solution, the human-machine interface device is also used to display the circuit breaker position status, such as... Figure 3 As shown; the PLC is also used to, after receiving the closing control signal, when it detects that the state of the first output port is "1" and the state of the third output port is "0", that is, KA1 is energized and KA3 is de-energized, that is, the voltage holding coil is energized and the simulated fault coil is de-energized, indicate that the circuit breaker position status display shows that the circuit breaker mechanism is in the closing state.
[0039] As another feasible example, the human-machine interface device is also used to display the circuit breaker position status; the PLC is also used to instruct the circuit breaker position status to display that the circuit breaker mechanism is in the closed state when the status of the first output port is detected to be "1".
[0040] It should be noted that the circuit breaker mechanism debugging device based on PLC provided in this application can adopt one of the two examples mentioned above.
[0041] As an example of implementation, the circuit breaker mechanism commissioning device further includes a DC power supply module; the DC power supply module is connected to the PLC and the relay module and is used to supply power to the PLC and the relay module, wherein the DC power supply can be multiple 24V DC power supplies.
[0042] As an example of an implementable approach, such as Figure 2As shown, the AC power module is connected to the circuit breaker mechanism to supply power to the circuit breaker mechanism. The AC power module supplies power to the three coils of the circuit breaker mechanism. The voltage holding coil is connected in series with switch KA1 to form line one, the closing coil is connected in series with switch KA2 to form line two, and the simulated fault coil is connected in series with switch KA3 to form line three. Then the three lines are connected in parallel and then the AC power module is connected in parallel.
[0043] The technical advantages of the PLC-based circuit breaker mechanism debugging device provided in this application are as follows:
[0044] This device is designed for 220V AC circuit breakers used in wind farm applications. It primarily includes a voltage holding coil, a closing coil, and a simulated fault coil. The device includes a PLC, a human-machine interface (HMI) device electrically connected to the PLC, and a relay module. Users can debug the circuit breaker mechanism, including the voltage holding coil and simulated fault coil, by operating the HMI device. Compared to existing technologies that can only debug circuit breaker mechanisms consisting of closing and opening coils, this device solves the problem that existing technologies cannot debug circuit breaker mechanisms including both voltage holding and fault coils. Furthermore, the device includes an HMI device, which supports debugging the circuit breaker mechanism's opening, closing, and fault tripping functions. This circuit breaker mechanism debugging device also supports displaying the circuit breaker position indicator and monitoring the status of the first output port. Based on the status of the PLC's first output port, the device can... Figure 3 The touchscreen interface displays the opening and closing status of the circuit breaker mechanism, making circuit breaker debugging more intuitive.
[0045] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A PLC-based circuit breaker mechanism debugging device, characterized in that, include: PLC module, and human-machine interface device and relay module respectively electrically connected to the PLC module; The relay module includes a first relay KA1, a second relay KA2, and a third relay KA3; wherein, the switch of KA1 is used to control whether the voltage holding coil of the circuit breaker mechanism is energized, the switch of KA2 is used to control whether the closing coil of the circuit breaker mechanism is energized, and the switch of KA3 is used to control whether the simulated fault tripping coil of the circuit breaker mechanism is energized. KA1, KA2, and KA3 are electrically connected to the first output port, second output port, and third output port of the PLC, respectively. The human-machine interface device is used to display the trip control button, and the trip control button is used to send a trip control signal to the PLC when it is pressed. The human-machine interface device is also used to display a closing control button, which, when pressed, sends a closing control signal to the PLC. The human-machine interface device is also used to display a simulated fault trip button, which, when pressed, sends a simulated fault trip signal to the PLC. The PLC is used to control the KA1 to lose power through the first output port when it receives the trip control signal, so that the switch of KA1 is opened. The closing coil is used to close the circuit when both it and the voltage holding coil are energized; the voltage holding coil is used to control the circuit breaker mechanism to open when power is lost; and the simulated fault coil is used to control the circuit breaker mechanism to open when energized. The PLC is also used to control KA1 to be energized through the first output port when it receives the closing control signal, and after waiting for a first preset time T1, control KA2 to be energized through the second output port so that the switch of KA2 is closed, and after waiting for a second preset time T2, control KA2 to be de-energized through the second output port so that the switch of KA2 is opened. The PLC is also used to control the KA3 to be energized through the third output port when it receives the simulated fault trip signal, so that the switch of the KA3 is closed.
2. The circuit breaker mechanism debugging device according to claim 1, characterized in that, The human-machine interface device is also used to display a system fault reset button, which, when pressed, sends a reset signal to the PLC. The PLC is also configured to, upon receiving the reset signal, de-energize KA1 via the first output port, thereby disconnecting the switch of KA1, and de-energize KA3 via the third output port, thereby disconnecting the switch of KA3.
3. The circuit breaker mechanism debugging device according to claim 1, characterized in that, The human-machine interface device is also used to display the position status of the circuit breaker; The PLC is also used to instruct the circuit breaker position status display that the circuit breaker mechanism is in the open state when the status of the first output port is detected to be "0".
4. The circuit breaker mechanism debugging device according to claim 1, characterized in that, The human-machine interface device is also used to display the position status of the circuit breaker; The PLC is also used to indicate that the circuit breaker position status display is in the closed state when the status of the first output port is "1".
5. The circuit breaker mechanism debugging device according to claim 1, characterized in that, The human-machine interface device is also used to display the position status of the circuit breaker; The PLC is also used to, upon receiving the closing control signal, and upon detecting that the first output port is in the state of "1" and the third output port is in the state of "0", instruct the circuit breaker position status display that the circuit breaker mechanism is in the closing state.
6. The circuit breaker mechanism debugging device according to claim 1, characterized in that, Also includes: DC power supply module; The DC power supply module is connected to the PLC module and the relay module, and is used to supply power to the PLC module and the relay module.
7. The circuit breaker mechanism debugging device according to any one of claims 1-6, characterized in that, The circuit breaker mechanism is connected to an AC power module, which supplies power to the circuit breaker mechanism.