Electromagnetic valve linkage tripping protection control method and system

Abstract

The invention relates to an electromagnetic valve linkage tripping protection control method and system. The method comprises the steps that a first controller controls a first trip electromagnetic valve to be switched on or switched off, so that a steam turbine power regulating valve is opened or closed, and a current control state signal of the first trip electromagnetic valve is output to a second controller through two control state output channels, and the second controller controls the second trip electromagnetic valve in a linkage manner, so that the on-off state of the second trip electromagnetic valve is the same as that of the first trip electromagnetic valve. The second controller controls the on-off of the second trip electromagnetic valve so as to open or close the steam turbine power regulating valve, and outputs the current control state signal of the second trip electromagnetic valve to the first controller through the two control state output channels; according to the double-channel control system and method for the power regulating valve of the steam turbine, the risk of false triggering can be effectively avoided through double-channel control, so that the control stability and safety protection of the power regulating valve of the steam turbine are guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of nuclear power steam turbine valve control, and in particular to a solenoid valve linkage tripping protection control method and a system thereof. Background Art

[0002] The power regulating valves in nuclear power plants primarily rely on pump-driven oil, with the opening adjusted via a servo-driven oil regulating valve. Turbine power regulation is achieved through closed-loop control based on differences in steam flow. Under special operating conditions, such as rapid turbine power adjustment or when turbine protection functions are activated, the turbine power regulating valve must be able to close quickly. To this end, two trip solenoid valves are installed in the turbine power regulating valve's oil supply circuit. When an emergency shutdown is required, these solenoid valves quickly shut off the oil supply to the turbine power regulating valve, allowing it to close automatically and quickly due to its own spring force, effectively ensuring the safety of the turbine itself.

[0003] Therefore, the control of the trip solenoid valve shoulders the important task of turbine protection and rapid power regulation. The reliability of its control strategy is crucial, and the risk of false operation must be effectively avoided to ensure the stability and safety of the turbine power regulating valve control. However, the current control method for the two-way trip solenoid valve is single-channel control implemented by a single controller. Since it is always energized, it is prone to power failure and thus false triggering. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a solenoid valve linkage tripping protection control method and system thereof in response to the above-mentioned defects.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a solenoid valve linkage trip protection control method, applied to a first controller and a second controller, comprising the following steps: The first controller controls the on / off state of the first tripping solenoid valve to open or close the turbine power regulating valve, and outputs the current control state signal of the first tripping solenoid valve to the second controller through two control state output channels, so that the second controller controls the second tripping solenoid valve in a linked manner to make its on / off state the same as that of the first tripping solenoid valve; The second controller controls the on and off of the second trip solenoid valve to open or close the turbine power regulating valve, and outputs the current control state signal of the second trip solenoid valve to the first controller through two control state output channels, so that the first controller controls the first trip solenoid valve in a linked manner so that its on and off state is the same as that of the second trip solenoid valve.

[0006] Furthermore, in the solenoid valve linked trip protection control method of the present invention, the step of outputting the current control state signal of the first trip solenoid valve to the second controller through two control state output channels so that the second controller linkedly controls the second trip solenoid valve to have the same on / off state as the first trip solenoid valve includes: When the second controller determines that it has received at least one current control state signal of the first tripping solenoid valve outputted by the control state output channel, it controls the second tripping solenoid valve in a linkage manner so that its on / off state is the same as that of the first tripping solenoid valve.

[0007] Furthermore, in the solenoid valve-linked trip protection control method of the present invention, the step of outputting the current control state signal of the second trip solenoid valve to the first controller through two control state output channels so that the first controller controls the first trip solenoid valve in a linked manner to have the same on / off state as the second trip solenoid valve includes: When the first controller determines that it has received at least one current control state signal of the second tripping solenoid valve outputted by the control state output channel, it controls the first tripping solenoid valve in a linkage manner so that its on / off state is the same as that of the second tripping solenoid valve.

[0008] Furthermore, in the solenoid valve linkage trip protection control method of the present invention, the method further includes: Under normal control conditions, the first trip solenoid valve and the second trip solenoid valve are both normally energized, and the turbine power regulating valve is open. Under special working conditions, the second tripping solenoid valve loses power and closes, at which point the turbine power regulating valve closes quickly; Under the protection control working condition, the first tripping solenoid valve loses power and closes, and at this time the turbine power regulating valve is closed.

[0009] Furthermore, in the solenoid valve-linked tripping protection control system of the present invention, the solenoid valve-linked tripping protection control system includes a first tripping solenoid valve, a second tripping solenoid valve, a first controller and a second controller, wherein the first controller is connected to the first tripping solenoid valve, and the second controller is connected to the second tripping solenoid valve; The first controller is used to control the on / off state of the first tripping solenoid valve to open or close the turbine power regulating valve, and output the current control state signal of the first tripping solenoid valve to the second controller through two control state output channels, so that the second controller controls the second tripping solenoid valve in a linked manner to make its on / off state the same as that of the first tripping solenoid valve; The second controller is used to: control the on and off of the second trip solenoid valve to open or close the turbine power regulating valve, and output the current control state signal of the second trip solenoid valve to the first controller through two control state output channels, so that the first controller can control the first trip solenoid valve in a linked manner so that its on and off state is the same as that of the second trip solenoid valve.

[0010] Further, in the solenoid valve linked tripping protection control system described in the present invention, the second controller is used to link and control the second tripping solenoid valve so that its on / off state is the same as that of the first tripping solenoid valve when it determines that the current control state signal of the first tripping solenoid valve outputted by at least one control state output channel is received.

[0011] Further, in the solenoid valve linked tripping protection control system described in the present invention, the first controller is used to link and control the first tripping solenoid valve so that its on / off state is the same as that of the second tripping solenoid valve when it determines that the current control state signal of the second tripping solenoid valve outputted by at least one control state output channel is received.

[0012] Furthermore, in the solenoid valve-linked tripping protection control system of the present invention, the turbine power regulating valve includes an actuating mechanism and a power oil chamber, and the solenoid valve-linked tripping protection control system further includes a servo power oil regulating valve connected between the power oil chamber and the power oil device, a first oil unloading pipeline connecting the first tripping solenoid valve between the power oil chamber and the power oil device, and a second oil unloading pipeline connecting the second tripping solenoid valve between the power oil chamber and the power oil device; The servo power oil regulating valve is used to adjust the flow rate and pressure of the power oil sent from the power oil device to the power oil chamber, so as to activate the actuator and adjust the valve opening accordingly; When the first tripping solenoid valve loses power, the power oil in the power oil chamber is discharged through the first oil unloading pipeline, and the turbine power regulating valve is closed at this time; When the second tripping solenoid valve loses power, the power oil in the power oil chamber is discharged through the second oil unloading pipeline, and the turbine power regulating valve is closed at this time.

[0013] Furthermore, in the solenoid valve linked tripping protection control system described in the present invention, when the turbine power regulating valve has a stable opening, the power oil quantity is set to a preset constant and remains unchanged during operation. At this time, the servo power oil regulating valve maintains the power oil pressure stably at 16Mpa, and allows a preset deviation range of ±1%.

[0014] Furthermore, in the solenoid valve linked tripping protection control system described in the present invention, the first controller is a GSE controller, and the second controller is a GRE controller.

[0015] The electromagnetic valve linkage tripping protection control method and system implementing the present invention have the following beneficial effects: the present invention can effectively avoid the risk of false triggering by setting up dual-channel control to ensure the stability and safety protection of the turbine power regulating valve control. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which: Figure 1 This is a flow chart of a solenoid valve linkage tripping protection control method provided by an embodiment of the present invention; Figure 2 It is a structural diagram of the solenoid valve linkage tripping protection control system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0017] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, a detailed description of the specific embodiments of the present invention is now provided with reference to the accompanying drawings. It should also be noted that, in the following description, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connected," "fixed," and "disposed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; internal connections between two elements, or interactions between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located above the other element, or one or more intervening elements may be present. The terms "first," "second," and "third," etc., are used solely to facilitate the description of the present technical solution and should not be construed to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features designated as "first," "second," and "third," etc., may explicitly or implicitly include one or more of such features. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0018] In the following description, specific details such as particular system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0019] In a preferred embodiment, reference Figure 1 The solenoid valve linkage trip protection control method of this embodiment is applied to a solenoid valve linkage trip protection control system, which is used to control a steam turbine power regulating valve. The solenoid valve linkage trip protection control system includes a first trip solenoid valve, a second trip solenoid valve, a first controller, and a second controller. The first controller is connected to the first trip solenoid valve, and the second controller is connected to the second trip solenoid valve. The first controller controls the on-off of the first trip solenoid valve to open or close the steam turbine power regulating valve, and outputs the current control state signal of the first trip solenoid valve to the second controller through two control state output channels, so that the second controller controls the second trip solenoid valve to have the same on-off state as the first trip solenoid valve. The second controller controls the on-off of the second trip solenoid valve to open or close the steam turbine power regulating valve, and outputs the current control state signal of the second trip solenoid valve to the first controller through two control state output channels, so that the first controller controls the first trip solenoid valve to have the same on-off state as the second trip solenoid valve.

[0020] In this embodiment, the first trip solenoid valve closes the turbine power regulating valve under the protection control system / protection control operating conditions. The second trip solenoid valve quickly closes the turbine power regulating valve under the turbine power regulation system / special operating conditions. When the first trip solenoid valve loses power, it outputs a true power loss signal for the first trip solenoid valve, effectively implementing a protective action for the process system. Simultaneously, two trip solenoid valve control status outputs are added to the control system to transmit the status of the first trip solenoid valve to the second trip solenoid valve. Logical judgment ensures the actual closure of the regulating control trip solenoid valve. When the turbine regulation system requires rapid closure of the second trip solenoid valve, the loss of power to the second trip solenoid valve causes the regulating solenoid valve to actually lose power, effectively implementing a protective action for the process system. Simultaneously, two trip solenoid valve control status outputs are added to the control system to transmit the status of the second trip solenoid valve to the first trip solenoid valve. Logical judgment ensures the actual closure of the first trip solenoid valve.

[0021] Specifically, when the second controller determines that it has received at least one current control state signal of the first tripping solenoid valve outputted by the control state output channel, it controls the second tripping solenoid valve in a linkage manner so that its on / off state is the same as that of the first tripping solenoid valve.

[0022] Specifically, when the first controller determines that it has received at least one current control state signal of the second tripping solenoid valve outputted by the control state output channel, it linkage controls the first tripping solenoid valve so that its on / off state is the same as that of the second tripping solenoid valve.

[0023] It should be noted that the disadvantages of a single control status output channel include: if the command / control status signal sent back and forth is lost, the trip solenoid valve will lose power. However, this is a false triggering action, because it is the loss of the command / control status signal that triggers the trip solenoid valve to close, not the solenoid valve closure triggered by the protection or rapid adjustment activation. Compared to single-channel control, this embodiment adopts a dual-channel approach. By determining whether at least one channel outputs a control status, the corresponding trip solenoid valve is triggered to close, effectively avoiding the risk of false triggering due to command loss.

[0024] It can be understood that under normal control conditions, both the first and second trip solenoid valves are constantly energized, causing the turbine power regulating valve to open. Under special conditions, the second trip solenoid valve loses power and closes, causing the turbine power regulating valve to close rapidly. Under protective control conditions, the first trip solenoid valve loses power and closes, causing the turbine power regulating valve to close.

[0025] Figure 2 The figure shows a schematic structural diagram of a solenoid valve linkage tripping protection control system according to an embodiment of the present invention. Figure 2 The diagram illustrates the connections between the various components of the turbine power control valve and the direction of the power oil flow. It clearly demonstrates how the servo-power oil control valve controls the power oil to adjust the valve opening under normal operating conditions, and the coordinated working principles of the trip solenoid valve and oil unloading pipeline during protection and special operating conditions. The turbine power control valve consists of an actuator and a power oil chamber. The solenoid-operated trip protection control system also includes a servo-power oil control valve connected between the power oil chamber and the power oil unit, a first oil unloading pipeline connecting the first trip solenoid valve between the power oil chamber and the power oil unit, and a second oil unloading pipeline connecting the second trip solenoid valve between the power oil chamber and the power oil unit. The servo-power oil control valve regulates the flow and pressure of power oil from the power oil unit to the power oil chamber, thereby actuating the actuator and adjusting the valve opening accordingly.

[0026] It's understandable that the more oil in the power oil chamber, the wider the turbine power control valve's opening. The servo power oil control valve is a mechanical differential adjustment device controlled by instrumentation and control commands. When the valve reaches the required opening, the command reaches equilibrium, stopping further oil flow. Conversely, when the power control valve needs to close, the oil flow is reduced, and the valve begins to close.

[0027] When the first trip solenoid valve loses power, the power oil in the power oil chamber is discharged through the first oil unloading pipeline, and the turbine power regulating valve is closed. When the second trip solenoid valve loses power, the power oil in the power oil chamber is discharged through the second oil unloading pipeline, and the turbine power regulating valve is closed.

[0028] As you can understand, the turbine power control valve's actuator, driven by power oil, precisely controls the valve opening via the servo power oil control valve. The power oil chamber stores power oil, providing power for the control action. The first and second oil unloading lines discharge power oil when the trip solenoid valve is activated, enabling rapid closing of the control valve. The first and second trip solenoid valves, respectively, play a key role in activating the protective function and requiring rapid shutdown under special operating conditions. The servo power oil control valve transmits power oil via the control oil pipeline, while the power oil unit provides a stable power oil source for the entire system.

[0029] When the turbine power control valve receives an opening command, it sends it to the servo power oil control valve. The servo power oil control valve controls the power oil pressure in the power oil chamber to open and close the turbine trip solenoid valve. When the turbine control system's protection function activates, the first trip solenoid valve rapidly de-energizes and closes, unloading the power oil. The spring force of the turbine power control valve rapidly closes the valve. When the turbine power control valve requires rapid closure due to special operating conditions to regulate turbine load, the second trip solenoid valve activates to unload the power oil. The spring force of the turbine power control valve rapidly closes the valve. Under normal control conditions, both the protective trip solenoid valve and the rapid control trip solenoid valve are energized, minimizing the possibility of the regulating solenoid valve malfunctioning. The first and second trip solenoid valves perform different regulating and protection functions. When one trip solenoid valve de-energizes, the other trip solenoid valve must be de-energized in conjunction with the first trip solenoid valve. Both trip solenoid valves must maintain consistent states. This improves turbine control reliability and reduces the possibility of malfunctioning of the trip solenoid valve control valve due to power failure. The control status outputs of the two tripping solenoid valves require hierarchical control by different card components.

[0030] During normal operation, when the turbine power control valve receives an opening command, the command is transmitted to the servo power oil control valve, which then regulates the power oil pressure in the power oil chamber to open and close the turbine trip valve. When the turbine control system's protection function activates, the first trip solenoid valve quickly de-energizes and closes, the power oil is discharged through the protective oil discharge line, and the control valve quickly closes under its own spring force. Under special operating conditions, when the control valve needs to be quickly closed to adjust the turbine load, the second trip solenoid valve activates, the power oil is discharged through the second oil discharge line, and the control valve also quickly closes due to spring force. Under normal control conditions, both the first and second trip solenoid valves are energized, minimizing the risk of solenoid valve failure. If one trip solenoid valve actuates and de-energizes, the other trip solenoid valve must be de-energized synchronously to ensure control effectiveness and safety, ensuring that both trip solenoid valves remain in the same state. In addition, in order to further improve the reliability of steam turbine control and reduce the possibility of malfunction of the trip solenoid valve control valve due to power failure, the control status outputs of the two trip solenoid valves are processed in layers by different cards.

[0031] It can be understood that when the turbine power regulating valve has a stable opening, the power oil quantity is set to a preset constant and remains unchanged during operation. At this time, the servo power oil regulating valve maintains the power oil pressure at 16Mpa, and the allowed preset deviation range is ±1%. In other words, the control oil system is an independent system control, which requires the oil supply pressure to be stable at around 16Mpa. The flow rate is fixed, and the control system has no requirements for the flow rate. However, the final flow rate of the control system is changed by the servo power oil regulating valve. When the power regulating valve maintains a stable opening, the power oil flow rate is a fixed value. There is no monitoring of the oil flow in the system. However, strict requirements are placed on the oil pressure control, which is controlled at around 16MPa. It should be noted that the allowed preset deviation range can be set according to specific needs, and is not limited to being set to ±1%. Other deviation ranges also fall within the scope of protection of this application.

[0032] It can be understood that the first controller is a GSE controller, and the second controller is a GRE controller. The GSE controller is also a steam turbine protection system controller, and the GRE controller is also a steam turbine power regulation system controller.

[0033] It should be noted that a trip solenoid valve is an electromagnetically controlled valve commonly used in nuclear power plant steam turbine protection systems. When an abnormality occurs in turbine operation, the solenoid valve activates, shutting off the steam supply to the turbine and rapidly shutting it down to protect equipment and personnel. The operating principle of a trip solenoid valve is to control the movement of a valve core by energizing or de-energizing the electromagnetic coil, thereby controlling the flow of oil or gas. When the solenoid valve is energized, the valve core is drawn up, shutting off the oil or gas line. When the solenoid valve is de-energized, the spring forces the valve core back into position, opening the oil or gas line. Unlike ordinary solenoid valves, trip solenoid valves can operate normally under very high oil pressures, such as 16 MPa, and require high sealing and reliability. The structure of the trip solenoid valve can be referenced in existing technology and will not be further described here.

[0034] This embodiment uses two independent but interlocking solenoid valves to respectively assume the functions of rapid response and rapid regulation of the turbine power trip, and controls them through different controllers to ensure that the functions are clear and do not interfere with each other. Different card components are used to output the solenoid valve control status in a layered manner, which effectively reduces the risk of false operation due to power failure and improves the reliability of system control. A well-designed interlocking control logic ensures that when one solenoid valve loses power, the other can respond synchronously to maintain control consistency. The two-way trip solenoid valve is applied to the turbine power regulating valve. In actual operation, when the turbine has an abnormality and requires emergency shutdown, the protective oil unloading trip solenoid valve quickly loses power, cuts off the power oil supply, and the regulating valve closes quickly. At the same time, the rapid adjustment trip solenoid valve also acts synchronously under interlocking control to ensure the reliability and timeliness of the closing action. When rapidly adjusting the turbine load, the rapid adjustment trip solenoid valve takes priority. If the protection function is triggered synchronously, the protective oil unloading trip solenoid valve will also work in conjunction to ensure the safe and stable operation of the turbine.

[0035] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0036] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0037] It is understandable that the above embodiments only express the preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. A solenoid valve linkage trip protection control method, characterized in that: Applied to the first controller and the second controller, comprising the following steps: The first controller controls the on / off state of the first tripping solenoid valve to open or close the turbine power regulating valve, and outputs the current control state signal of the first tripping solenoid valve to the second controller through two control state output channels, so that the second controller controls the second tripping solenoid valve in a linked manner to make its on / off state the same as that of the first tripping solenoid valve; The second controller controls the on and off of the second trip solenoid valve to open or close the turbine power regulating valve, and outputs the current control state signal of the second trip solenoid valve to the first controller through two control state output channels, so that the first controller controls the first trip solenoid valve in a linked manner so that its on and off state is the same as that of the second trip solenoid valve.

2. The solenoid valve linkage trip protection control method according to claim 1, characterized in that: The step of outputting the current control state signal of the first tripping solenoid valve to the second controller through two control state output channels so that the second controller controls the second tripping solenoid valve in a linked manner to make its on / off state the same as that of the first tripping solenoid valve includes: When the second controller determines that it has received at least one current control state signal of the first tripping solenoid valve outputted by the control state output channel, it controls the second tripping solenoid valve in a linkage manner so that its on / off state is the same as that of the first tripping solenoid valve.

3. The solenoid valve linkage trip protection control method according to claim 1, characterized in that: The step of outputting the current control state signal of the second tripping solenoid valve to the first controller through the two control state output channels so that the first controller controls the first tripping solenoid valve in a linked manner to make its on / off state the same as that of the second tripping solenoid valve includes: When the first controller determines that it has received at least one current control state signal of the second tripping solenoid valve outputted by the control state output channel, it controls the first tripping solenoid valve in a linkage manner so that its on / off state is the same as that of the second tripping solenoid valve.

4. The solenoid valve linkage trip protection control method according to claim 1, characterized in that: The method further includes: Under normal control conditions, the first trip solenoid valve and the second trip solenoid valve are both normally energized, and the turbine power regulating valve is open. Under special working conditions, the second tripping solenoid valve loses power and closes, at which point the turbine power regulating valve closes quickly; Under the protection control working condition, the first tripping solenoid valve loses power and closes, and at this time the turbine power regulating valve is closed.

5. A solenoid valve linkage trip protection control system for controlling a steam turbine power regulating valve, characterized in that: The solenoid valve linkage trip protection control system includes a first trip solenoid valve, a second trip solenoid valve, a first controller and a second controller, wherein the first controller is connected to the first trip solenoid valve, and the second controller is connected to the second trip solenoid valve; The first controller is used to control the on / off state of the first tripping solenoid valve to open or close the turbine power regulating valve, and output the current control state signal of the first tripping solenoid valve to the second controller through two control state output channels, so that the second controller controls the second tripping solenoid valve in a linked manner to make its on / off state the same as that of the first tripping solenoid valve; The second controller is used to: control the on and off of the second trip solenoid valve to open or close the turbine power regulating valve, and output the current control state signal of the second trip solenoid valve to the first controller through two control state output channels, so that the first controller can control the first trip solenoid valve in a linked manner so that its on and off state is the same as that of the second trip solenoid valve.

6. The solenoid valve linkage trip protection control system according to claim 5, characterized in that: The second controller is used to control the second tripping solenoid valve to have the same on / off state as the first tripping solenoid valve when it determines that the current control state signal of the first tripping solenoid valve outputted by at least one control state output channel is received.

7. The solenoid valve linkage trip protection control system according to claim 5, characterized in that: The first controller is used to control the first tripping solenoid valve to have the same on / off state as the second tripping solenoid valve when it determines that the current control state signal of the second tripping solenoid valve outputted by at least one control state output channel is received.

8. The solenoid valve linkage trip protection control system according to claim 5, characterized in that: The steam turbine power regulating valve includes an actuating mechanism and a power oil chamber, and the solenoid valve-linked tripping protection control system also includes a servo power oil regulating valve connected between the power oil chamber and the power oil device, a first oil unloading pipeline connecting the first tripping solenoid valve between the power oil chamber and the power oil device, and a second oil unloading pipeline connecting the second tripping solenoid valve between the power oil chamber and the power oil device; The servo power oil regulating valve is used to adjust the flow rate and pressure of the power oil sent from the power oil device to the power oil chamber, so as to activate the actuator and adjust the valve opening accordingly; When the first tripping solenoid valve loses power, the power oil in the power oil chamber is discharged through the first oil unloading pipeline, and the turbine power regulating valve is closed at this time; When the second tripping solenoid valve loses power, the power oil in the power oil chamber is discharged through the second oil unloading pipeline, and the turbine power regulating valve is closed at this time.

9. The solenoid valve linkage trip protection control system according to claim 8, characterized in that: When the turbine power regulating valve has a stable opening, the power oil quantity is set to a preset constant and remains unchanged during operation. At this time, the servo power oil regulating valve maintains the power oil pressure at 16 MPa and allows a preset deviation range of ±1%.

10. The solenoid valve linkage trip protection control system according to claim 5, characterized in that: The first controller is a GSE controller, and the second controller is a GRE controller.

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