Water turbine governor starting electromagnetic valve control method and system

Abstract

The invention discloses a starting electromagnetic valve control method and system for a hydraulic turbine governor, and relates to the technical field of hydraulic turbine governor control. According to the first control loop redundancy; power is monitored based on a power monitoring relay. According to the method, three power supplies are designed in a redundant mode, the power supply reliability of a control loop is improved, and meanwhile potential safety hazards of power supply transfer are effectively reduced. A reverse diode is adopted in a starting-up electromagnetic valve control loop, so that the risk that equipment is burnt out due to mutual serial connection in the electromagnetic valve control loop is effectively avoided. By means of the redundancy design of the two-way input control loop of the LCU and the speed regulator control cabinet, the starting failure of the water turbine speed regulator caused by the fact that the starting-up electromagnetic valve loses control is effectively prevented. The two-way manual starting-up electromagnetic valve control buttons are arranged on the speed regulator control cabinet and the speed regulator hydraulic system control cabinet; the flexibility of the manual starting test of the speed regulator is effectively improved, and the labor efficiency of the maintenance test is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of turbine speed governor control, and in particular to a method and system for controlling a start-up solenoid valve of a turbine speed governor. Background Art

[0002] With the rapid development of hydropower technology, turbine speed governors are an important part of hydropower stations, and their start-up solenoid valves play a key role in the start-up and operation of the units. The traditional governor start-up solenoid valve control system mainly relies on a single power supply and a simple control loop to ensure the safe operation of the turbine generator set. However, with the improvement of the automation level of the power system and the complexity of the operating environment, power supply stability, signal transmission reliability and control loop flexibility have become important issues that need to be solved urgently. In order to ensure the efficient and stable operation of the governor start-up solenoid valve under various working conditions, modern technology has gradually introduced advanced technologies such as multi-power supply redundant design, signal feedback mechanism and multi-path control loop. However, most of the current technical solutions still have many deficiencies in redundancy, reliability and maintenance convenience, and it is difficult to meet the requirements of high reliability and maintainability of the governor system in the complex hydropower station environment.

[0003] The existing turbine governor start-up solenoid valve control system has the following main problems in technical design: First, the power supply redundancy is insufficient. The common design relies on only a single DC24V power supply for power supply, and the power supply signal needs to be transferred through multiple nodes, which increases the failure point and transmission risk. Once the power supply signal transmission is interrupted, the governor startup will fail. Secondly, the control loop design is relatively simple, usually with only two control signals, which come from the unit LCU and the local button of the governor electrical control cabinet, respectively. There is a lack of multiple redundant control paths. Once a path fails, the system will not be able to control the start-up solenoid valve normally. In addition, there is a lack of effective protection mechanism in the control loop, and loop series faults are prone to occur, which may cause equipment damage or system crash. Furthermore, the existing technology has hysteresis and incompleteness in the signal feedback mechanism. Key feedback signals such as power supply status and start-up solenoid valve position fail to achieve real-time and efficient transmission, affecting the maintainability and monitoring accuracy of the system. Finally, in the actual operation and maintenance process, due to the long distance between the governor control cabinet and the hydraulic control cabinet, the inspection and maintenance operations are relatively cumbersome, which increases the complexity of operation and labor costs. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention is proposed.

[0005] Therefore, the technical problem solved by the present invention is: the existing turbine speed governor start-up solenoid valve control method has insufficient power supply redundancy, a single control loop and lack of protection mechanism, the signal feedback is not timely and comprehensive enough, and how to ensure the stable operation of the start-up solenoid valve under complex working conditions.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a method for controlling a start-up solenoid valve of a turbine speed governor, comprising integrating power output through a first power supply; based on a first control loop redundancy; and monitoring the power supply based on a power monitoring relay.

[0007] As a preferred solution of the turbine speed governor start-up solenoid valve control method described in the present invention, the multi-source power supply redundant power supply and integrated power output include providing two DC power supplies and one AC power supply, and power management is performed through an air switch.

[0008] As a preferred solution of the method for controlling the start-up solenoid valve of a turbine speed governor described in the present invention, the multi-source power supply provides redundant power and integrates the power output including stepping down and stabilizing the voltage, and then rectifying and coupling the DC power supply.

[0009] As a preferred solution of the method for controlling the start-up solenoid valve of a turbine speed governor according to the present invention, the redundancy according to the first control loop includes collecting four control signals.

[0010] As a preferred solution of the method for controlling the start-up solenoid valve of a turbine speed governor according to the present invention, the redundancy according to the first control loop includes introducing a reverse diode into the control loop.

[0011] As a preferred solution of the method for controlling the start-up solenoid valve of a turbine speed governor described in the present invention, the power supply monitoring based on the power supply monitoring relay includes real-time monitoring of the power supply status and feeding back the power supply signal.

[0012] As a preferred solution of the method for controlling the start-up solenoid valve of a turbine speed governor according to the present invention, the power supply monitoring relay-based power supply monitoring includes a feedback signal.

[0013] Another object of the present invention is to provide a turbine speed governor start solenoid valve control system, which can solve the problem of the current turbine speed governor start solenoid valve control having a single control loop and lacking a protection mechanism through the redundancy of the first control loop.

[0014] As a preferred solution of the turbine speed governor start-up solenoid valve control system described in the present invention, it includes: a power supply module, a loop control module, and a signal feedback module; the power supply module is used for power redundancy and stable power supply; the loop control module is used for controlling loop redundancy; the signal feedback module is used for monitoring the power supply and feeding back the status.

[0015] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement a method for controlling a start-up solenoid valve of a turbine speed governor.

[0016] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of a method for controlling a start-up solenoid valve of a turbine speed governor.

[0017] Beneficial effects of the present invention: The turbine governor start-up solenoid valve control method provided by the present invention improves the power supply reliability of the control circuit through a three-way power supply redundant design, while effectively reducing the safety hazards of power transfer. The use of a reverse diode in the start-up solenoid valve control circuit effectively avoids the risk of burning equipment due to cross-current in the solenoid valve control circuit. The dual-way input control circuit redundant design of the LCU and the governor control cabinet effectively prevents the start-up failure of the turbine governor caused by the loss of control of the start-up solenoid valve. The dual-way manual start-up solenoid valve control button setting in the governor control cabinet and the governor hydraulic system control cabinet effectively improves the flexibility of the governor manual start-up test and greatly improves the labor efficiency of the maintenance test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 The present invention provides an overall flow chart of a method for controlling a start-up solenoid valve of a turbine speed governor according to a first embodiment of the present invention.

[0020] Figure 2 A schematic diagram of a power supply circuit of a method for controlling a start-up solenoid valve of a turbine speed governor provided in the first embodiment of the present invention.

[0021] Figure 3 A schematic diagram of a control circuit of a method for controlling a start-up solenoid valve of a turbine governor provided in the first embodiment of the present invention.

[0022] Figure 4 A schematic diagram of a signal feedback loop of a method for controlling a start-up solenoid valve of a turbine governor provided in a first embodiment of the present invention.

[0023] Figure 5 The present invention provides an overall flow chart of a turbine speed governor startup solenoid valve control system according to a third embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0025] Example 1, reference Figure 1 - Figure 4 , as an embodiment of the present invention, provides a method for controlling a start-up solenoid valve of a turbine speed governor, comprising:

[0026] S1: Integrate power output through the first power supply.

[0027] Furthermore, the first power supply can be of multiple types, including multiple redundant power supplies, dual DC power supplies and supercapacitor energy storage solutions, and DC power supplies and uninterruptible power supply (UPS) systems, etc.; the first power supply in this embodiment adopts multiple redundant power supplies.

[0028] It should be noted that when the two DC220V power switches QF02 and QF03 are closed, and the AC220V power switch is closed, the AC220V power supply is stepped down and stabilized by the isolation transformer BV01, and then coupled with the first DC220V power supply through the power coupling boards V01-V02 to form a new DC220V power supply. The newly coupled DC220V power supply and the second DC220V power supply are converted into two DC24V power supplies through the switch power supplies SP01-SP02. The two DC24V power supplies are integrated into one DC24V power supply through the power integrated module SS01, and provide safe and stable power to the speed regulator start solenoid valve through the power switch QF04. The monitoring relay K04 is energized, and the start solenoid valve control circuit can be energized and work normally, and its signal node K04 is sent to the LCU and the speed regulator control cabinet PLC.

[0029] Furthermore, in another feasible embodiment, the first power supply adopts a dual DC power supply and supercapacitor energy storage solution as well as a DC power supply and an uninterruptible power supply (UPS) system, including: using two independent DC power supplies (such as DC220V) and cooperating with a supercapacitor group for power storage. During normal operation, the supercapacitor is continuously charged; when the DC power supply fails, the supercapacitor immediately releases the stored energy to maintain the power supply of the solenoid valve. The supercapacitor has an extremely fast response speed and can provide stable power within milliseconds. It can cope with short-term power interruptions and reduce the complexity of power switching. It has a longer lifespan and reduces maintenance costs. However, the storage energy of the supercapacitor is limited and cannot supply power for a long time. The management and control of the supercapacitor are required to be high.

[0030] Furthermore, the DC power supply + uninterruptible power supply (UPS) system uses a DC power supply (DC220V) as the main power supply, and the other power supply path is provided by an uninterruptible power supply (UPS) to provide stable power. When the main power supply fails, the UPS immediately takes over the power supply to ensure uninterrupted operation of the system. The UPS power supply has high stability, short switching time, and good power supply quality. The UPS system has a self-diagnosis function and can warn of power failures in advance. It is suitable for longer power outages. However, the UPS system is expensive, especially the high-power UPS. Regular maintenance and battery replacement are required, and the operation and maintenance costs are high.

[0031] S2: According to the first control loop redundancy.

[0032] Furthermore, the first control may be of multiple types, including multi-path control, dual PLC control, and bus communication control, etc.; the first control in this embodiment adopts multi-power redundant power supply.

[0033] It should be noted that, under normal circumstances, the LCU initiates the start-up command, relay K01 is energized, the start-up solenoid valve 101EM is energized, the hydro-turbine generator set is started and operated, and at the same time, the start-up solenoid valve position switch 101FC is activated, and the 101FC contact is sent to the LCU and the speed governor control cabinet; secondly, when relay KO1 fails, the monitoring can use communication to send the speed governor start-up command, the speed governor control cabinet activates the start-up solenoid valve through the PLC internal program, relay KS07 is energized, the start-up solenoid valve 101EM is energized, the hydro-turbine generator set is started and operated, and the 101FC contact is sent to the LCU and the speed governor control cabinet; the redundant control of the two control methods improves the success rate of the speed governor start-up. When the speed governor is tested for manual start-up during commissioning and maintenance, the operation and maintenance personnel can control the start-up solenoid valve in the speed governor control cabinet or in the speed governor hydraulic control cabinet. When the speed governor hydraulic system control mode is in the remote state, the speed governor control cabinet switches to manual control mode, press SB06 to start the start-up solenoid valve, the start-up solenoid valve 101EM is energized and the turbine generator set enters the start-up process; the hydraulic control cabinet can also be switched to local control mode, and the solenoid valve 101EM can be controlled by operating SB07 in the hydraulic system control cabinet to achieve the purpose of starting the speed governor.

[0034] Furthermore, in another feasible embodiment, the first control adopts dual PLC control and bus communication control, etc., including: the dual PLC control system is equipped with two independent PLC controllers (main controller and backup controller). When the main controller fails or fails, the system automatically switches to the backup controller to continue to complete the control of the power-on solenoid valve. The two PLC controllers communicate through a redundant bus or Ethernet to ensure real-time synchronization of control signals. Its control logic is centralized to reduce complex multi-path design. The main and standby switching is rapid, reducing fault response time. Easy to maintain and diagnose. However, the controller cost is relatively high. If the main and standby switching mechanism fails, it may affect the entire system. Applicable scenarios are scenarios that require high reliability and fast response. Suitable for equipment with high requirements for system control continuity.

[0035] It should be noted that the bus communication control solution (fieldbus / industrial Ethernet) uses fieldbus (such as PROFIBUS, CAN bus) or industrial Ethernet technology to achieve communication and signal sharing between multiple control nodes. The control signal of the power-on solenoid valve is transmitted by multiple nodes through the bus, and each node can take over the signal according to the priority. The control signal can be flexibly allocated to reduce the risk of single point failure. It can support the coordinated control of multiple control units. It is easy to perform remote diagnosis and monitoring. However, bus failure may cause the overall control to fail. The network configuration and maintenance requirements are high. The applicable scenario is a complex industrial automation control scenario. Scenarios that require remote monitoring and centralized management.

[0036] S3: Monitors power based on the power monitoring relay.

[0037] Furthermore, in the figure: QF01-AC power air switch, QF2-first DC power air switch, QF03-second DC power air switch, QF04-DC24V air switch, BV01-isolation transformer, KV01-AC power monitoring relay, KV02-first DC220V power monitoring relay, KV03-second DC220V power monitoring relay, KV04-DC24V power monitoring relay, V01~V02-power coupling board, SP01~SP02-power switch, SS01-power integrated module, K01-LCU start-up solenoid valve signal relay, KS07-speed regulator control cabinet start-up solenoid valve signal relay, SB06-speed regulator control cabinet manual start-up solenoid valve button, SB07-hydraulic control cabinet manual start-up solenoid valve button, 101FC-start-up solenoid valve start-up position switch, 101EM-start-up solenoid valve start-up solenoid valve, D1-diode.

[0038] See also Figure 2-3, including two DC220V power supplies, one AC220V redundant power supply, four start-up solenoid valve control circuits, and one start-up solenoid valve signal feedback circuit. Among them, QF01-AC power air switch, QF02-first DC power air switch, QF03-second DC power air switch, QF04-DC24V air switch, BV01-isolation transformer, KV01-AC power monitoring relay, KV02-first DC220V power monitoring relay, KV03-second DC220V power monitoring relay, KV04-DC24V power monitoring relay, V01~V02-power coupling board, SP01~SP02-power switch, SS01-power integrated module, K01-LCU start-up solenoid valve signal relay, KS07-speed regulator control cabinet start-up solenoid valve signal relay, SB06-speed regulator control cabinet manual start-up solenoid valve button, SB07-hydraulic control cabinet manual start-up solenoid valve button, 101FC-start-up solenoid valve start-up position switch, 101EM-start-up solenoid valve start-up solenoid valve, D1-diode.

[0039] It should be noted that the two DC power supplies DC220V and one AC power supply AC220V are designed with three redundant circuits, four start-up solenoid valves are put into control loop redundant control, and one start-up solenoid valve signal feedback loop. The three power supplies are taken from the plant power DC power supply system and the unit's own power system, and their power supplies are directly connected to the speed regulator control cabinet, and air switches are set up respectively. The AC power supply AC220V is transformed and stabilized by the isolation transformer and coupled with the DC power supply DC220V, and then rectified and coupled to a new DC power supply DC220V through the power coupling board. The newly coupled DC power supply DC220V and the other DC power supply DC220V are converted into two DC power supplies DC24V through the power switch, and finally the two DC power supplies DC24V are integrated into one DC power supply DC24V through the power integrated module to power the start-up solenoid valve. The power cable is directly connected from the speed regulator control cabinet to the start-up solenoid valve body, and is not transferred in other terminal boxes. The first control signal in the solenoid valve control loop comes from the unit LCU through a relay, the second control signal comes from the governor control cabinet through a relay, the third control signal is the local button of the governor control cabinet, and the fourth control signal comes from the local control button of the governor hydraulic control cabinet. A reverse diode is designed in the control loop of the start-up solenoid valve to prevent the control loop from burning the equipment. The power supply monitoring signal of the start-up solenoid valve in the signal feedback loop is sent to the governor control cabinet through a relay and the position feedback signal of the start-up solenoid valve through a position switch, and is output to the unit LCU and the governor hydraulic control cabinet through a relay expansion.

[0040] Embodiment 2, an embodiment of the present invention, provides a method for controlling a start-up solenoid valve of a turbine speed governor. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through economic benefit calculation and simulation experiments.

[0041] First of all, this experiment aims to verify the performance of the turbine governor start-up solenoid valve control device and method in terms of power supply redundancy, multi-path control, signal feedback stability, etc., and to evaluate the reliability, stability and maintainability of the system under different working conditions.

[0042] The test equipment and layout include:

[0043] Power supply system: two DC220V direct power supplies (QF02, QF03), one AC220V alternating current power supply (QF01).

[0044] Power supply protection device: QF04-DC24V air switch, BV01-isolation transformer, KV01~KV04 power supply monitoring relay.

[0045] Control circuit: K01-LCU control relay, KS07-speed governor control cabinet control relay, SB06-manual control button, SB07-hydraulic control button.

[0046] Feedback system: 101FC-solenoid valve position switch, 101EM-solenoid valve action feedback device.

[0047] Protection element: D1 - reverse diode.

[0048] Turn on the two DC power supplies QF02 and QF03 and the AC power supply QF01 respectively to ensure that the three power supplies are in normal operation. Then turn off one power supply in turn, monitor the power supply stability and switching response speed of the system when the power supply fails, and record the power supply status and switching time. Under normal working conditions, the LCU inputs the start-up signal, the K01 relay is energized, and the solenoid valve 101EM is observed to operate normally and whether the guide vane opening reaches the set value. When the K01 relay fails, the PLC control is used to input the start-up solenoid valve, and the action of the KS07 relay and the response of the solenoid valve 101EM are observed. Trigger the start-up solenoid valve position switch 101FC, observe the delay time of the signal feedback and the integrity of the signal transmission, and verify the stability and accuracy of the system signal under different paths. Use the governor control cabinet button (SB06) and the hydraulic control cabinet button (SB07) respectively to perform manual start-up solenoid valve test, and record the response time and system stability under the two methods. The test data of each step will be recorded in detail, including power switching time, control response time, feedback signal delay time, etc.

[0049] Table 1 Experimental data table

[0050]

[0051] In the power redundancy test, when the QF02 or QF03 power supply fails, the system can quickly switch to the backup power supply, the power supply switching time is between 50 and 55ms on average, and the switching process is stable without obvious voltage fluctuations. This effectively solves the problem that the traditional single-way power supply cannot maintain the stable operation of the solenoid valve in a faulty state. In the control loop test, after the LCU control relay (K01) fails, the system automatically takes over the control signal through the PLC, the KS07 relay operates normally, and the response time is controlled within 200ms. Compared with the traditional single-way control loop, the present invention significantly improves the redundancy and response speed of the control system and reduces the probability of control failure. In the signal feedback test, the delay time of the solenoid valve position switch (101FC) transmitting the feedback signal is between 20 and 40ms on average, and the signal transmission is stable, without loss or significant increase in delay. This shows that the signal feedback loop has high stability and reliability under multi-path design. In the manual control test, the governor control cabinet button (SB06) and the hydraulic control cabinet button (SB07) can both effectively trigger the solenoid valve, with response times of 250ms and 300ms, respectively. These two control methods provide maintenance personnel with flexible operating methods, effectively reducing the difficulty and risk of operation during maintenance. Traditional technical problems: There is a risk of failure in a single power supply, the reliability of a single control loop is poor, and the signal feedback delay is obvious. Advantages of the present invention: Multi-path power supply ensures continuous and stable operation of the system; the four-way control loop design significantly improves the fault tolerance rate; the signal feedback stability is enhanced, and the data transmission delay is reduced; the manual control function design improves the flexibility and convenience of system operation and maintenance.

[0052] Based on the above analysis, it can be seen that the present invention has significant advantages in power supply redundancy design, multi-path control, signal feedback stability, etc., especially when dealing with complex working conditions and emergency failures, it has higher reliability and maintainability, which is significantly better than the existing technical solutions.

[0053] Example 3, reference Figure 5 , which is an embodiment of the present invention, provides a turbine governor start-up solenoid valve control system, including a power supply module, a loop control module, and a signal feedback module.

[0054] The power supply module is used for power redundancy and stable power supply, the loop control module is used to control loop redundancy, and the signal feedback module is used to monitor the power supply and feedback the status.

[0055] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0056] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0057] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0058] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc. It should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not limited. Although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for controlling a start-up solenoid valve of a turbine speed governor, characterized in that: include: Integrate power output via the first power supply; According to the first control loop redundancy; The power supply is monitored based on the power supply monitoring relay.

2. The method for controlling a turbine speed governor start-up solenoid valve according to claim 1, characterized in that: The multi-source power supply redundantly supplies power and integrates power output, including providing two DC power supplies and one AC power supply, and performing power management through an air switch.

3. The method for controlling a turbine governor start-up solenoid valve according to claim 2, characterized in that: The multi-source power supply provides redundant power and integrates power output, including voltage reduction and voltage regulation, and then rectifies and couples the DC power supply.

4. The method for controlling a turbine speed governor start-up solenoid valve according to claim 3, characterized in that: The redundancy according to the first control loop includes collecting four control signals.

5. The method for controlling a start-up solenoid valve of a turbine speed governor according to claim 4, characterized in that: The redundancy according to the first control loop includes introducing a reverse diode into the control loop.

6. The method for controlling a turbine speed governor start-up solenoid valve according to claim 5, characterized in that: The power monitoring relay based power monitoring includes real-time monitoring of the power status and feeding back the power signal.

7. The method for controlling a turbine governor start-up solenoid valve according to claim 6, characterized in that: The monitoring of the power supply based on the power supply monitoring relay includes a feedback signal.

8. A system using the method for controlling a start-up solenoid valve of a turbine speed governor as claimed in any one of claims 1 to 7, characterized in that: Including power supply module, loop control module and signal feedback module; The power supply module is used for power redundancy and stable power supply; The loop control module is used to control loop redundancy; The signal feedback module is used to monitor the power supply and feedback the status.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method for controlling a start-up solenoid valve of a turbine governor according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for controlling a start-up solenoid valve of a turbine governor according to any one of claims 1 to 7 are implemented.

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