Fan fire-fighting action linkage shutdown control method, system and equipment and medium

Abstract

The invention discloses a fan fire-fighting action linkage shutdown control method, system and equipment and a medium. The method comprises the steps that passive normally-open contacts are arranged on all fire-fighting devices of a wind generating set respectively; an intermediate relay is connected in series in an action detection loop of a passive normally open contact of the fire-fighting device, and when any fire-fighting device acts, the intermediate relay is powered on; a plurality of groups of normally-closed auxiliary contacts of the intermediate relay are disconnected at the same time, and a fire-fighting device action feedback signal loop and a fan cooling fan control loop are cut off respectively; a fire-fighting device action alarm signal is generated, and a fan shutdown program is executed; and the fan master control system uploads a fire-fighting device action alarm signal to a booster station central control room and a centralized control center through a communication network. According to the invention, the action contact is additionally arranged on the fire-fighting device and is matched with the intermediate relay to realize signal conversion and multi-path control, so that the technical problem that a passive fire-fighting system cannot realize state monitoring is solved.

Description

Technical Field

[0001] The present invention relates to the field of safety control technology, and in particular to a fan fire-fighting action linkage shutdown control method, system, equipment and medium. Background Art

[0002] With the rapid development of the global new energy industry, wind power, as a key component of clean energy, is occupying an increasingly important position in the energy mix. However, with the continuous increase in installed wind power capacity and the extended operating life of wind farms, the risk of fire in wind turbines has become increasingly prominent, becoming a major hidden danger affecting the safe and stable operation of wind farms. Wind turbines are often installed in remote areas. Once a fire occurs, it is often difficult to detect and deal with it in a timely manner, resulting in not only huge economic losses but also the possibility of triggering larger-scale safety accidents. Therefore, equipping wind turbines with effective fire protection systems has become an inevitable requirement for the development of the industry.

[0003] Currently, most newly built wind turbines use active firefighting systems, which can achieve early detection and automatic fire extinguishing. However, some older units are affected by factors such as installation space limitations, poor technical compatibility, and high retrofit costs, and are mainly equipped with passive firefighting systems. This type of passive firefighting system automatically activates through temperature sensing using a thermal wire. Although it can automatically release fire extinguishing agent when a fire occurs, it has obvious technical flaws: after the firefighting device is activated, the wind turbine backend system does not have any alarm records. Operation and maintenance personnel cannot obtain real-time information about the operating status of the unit's firefighting system. When the firefighting device malfunctions, they cannot be discovered and handled in time, making it difficult to ensure the availability of the firefighting device. More seriously, when the firefighting device is activated due to an actual fire, the backend system is also unable to receive the alarm information immediately, seriously affecting the timely handling of the fire and posing a major safety hazard. Summary of the Invention

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

[0005] Therefore, the present invention provides a fan fire action linkage shutdown control method, system, equipment and medium to solve the problem that operation and maintenance personnel cannot grasp the operating status of the unit fire protection system in real time and cannot promptly discover and handle the problem when the fire protection device malfunctions.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] In a first aspect, the present invention provides a method for controlling a wind turbine fire-fighting action-linked shutdown, comprising the following steps:

[0008] Passive normally open contacts are set on each fire-fighting device of the wind turbine generator set, and the passive normally open contacts of multiple fire-fighting devices are connected in parallel and then connected to the digital input port of the wind turbine main control system;

[0009] An intermediate relay is connected in series in the action detection circuit of the passive normally open contacts of the fire-fighting device. When any fire-fighting device is actuated, the passive normally open contacts of the fire-fighting device are closed, energizing the intermediate relay.

[0010] After the intermediate relay is energized, multiple groups of normally closed auxiliary contacts of the intermediate relay are disconnected at the same time, respectively cutting off the fire protection device action feedback signal circuit and the fan cooling fan control circuit;

[0011] After the fan main control system detects that the fire-fighting device action feedback signal circuit is disconnected, it generates a fire-fighting device action alarm signal and executes the fan shutdown procedure;

[0012] The fan main control system uploads the fire-fighting device action alarm signal to the booster station control room and centralized control center through the communication network, realizing remote monitoring of the fire-fighting device action status and fault handling.

[0013] As a preferred solution of the wind turbine fire-fighting action linkage shutdown control method of the present invention, wherein: an air switch and a surge protector are connected in series between the passive normally open contact of the fire-fighting device and the DC power supply;

[0014] The air switch is used for safety isolation when replacing the fire protection device;

[0015] The surge protector is used to prevent lightning current from interfering with the action signal of the fire-fighting device.

[0016] The beneficial effects of this preferred technical solution are: the setting of the air switch enables the circuit to be safely isolated when the fire-fighting device needs to be replaced or repaired, avoiding the safety risks of live operations, and the configuration of the surge protector effectively prevents transient overvoltages such as lightning strikes from interfering with the action signal of the fire-fighting device.

[0017] As a preferred solution of the fan fire action linkage shutdown control method described in the present invention, the first group of normally closed contacts of the intermediate relay is connected in series in the fire protection device action feedback signal circuit, the second group of normally closed contacts is connected in series in the gear box cooling fan control circuit, the third group of normally closed contacts is connected in series in the generator cooling fan control circuit, and the fourth group of normally closed contacts is connected in series in the cabin circulation fan control circuit.

[0018] As a preferred solution of the wind turbine fire-fighting action linkage shutdown control method of the present invention, when the wind turbine main control system receives the fire-fighting device action alarm signal, it performs the corresponding shutdown operation according to the preset fire safety level, specifically including:

[0019] When the duration of the fire-fighting device action signal exceeds the preset threshold, an emergency shutdown is executed;

[0020] When the duration of the fire protection device action signal is within the preset threshold range, a general shutdown is performed;

[0021] When an emergency shutdown or a general shutdown is executed, the shutdown information is recorded in the fan operation log.

[0022] The beneficial effect of this preferred technical solution is: intelligently judge the severity of the fire according to the duration of the fire-fighting device action signal and execute the corresponding shutdown strategy, avoiding a one-size-fits-all approach.

[0023] As a preferred solution of the blower fire action linkage shutdown control method of the present invention, the shutting off of the blower cooling fan control circuit includes the following steps:

[0024] The gearbox cooling fan control circuit is connected to the gearbox cooling fan through the first AC contactor;

[0025] The generator cooling fan control circuit is connected to the generator cooling fan through the second AC contactor;

[0026] The cabin circulation fan control circuit is connected to the cabin circulation fan through the third AC contactor;

[0027] When the normally closed contact of the intermediate relay is disconnected, the first AC contactor, the second AC contactor and the third AC contactor lose power and are disconnected, and the corresponding fans stop running.

[0028] The beneficial effects of this preferred technical solution are: using AC contactors to control different fans separately, the modularization and standardization of fan control are achieved, and each fan corresponds to an independent AC contactor, which makes the system have good scalability and maintainability.

[0029] As a preferred solution of the wind turbine fire-fighting action linkage shutdown control method described in the present invention, wherein: the communication network transmission path is:

[0030] The fan master control system transmits the fire protection device action alarm signal to the booster station communication switch via the fan communication switch;

[0031] Then, the fire-fighting device action alarm signal is uploaded to the centralized control center through the communication switch of the booster station;

[0032] The centralized control center identifies and processes the fire-fighting device action alarm information according to a preset fault code table.

[0033] The beneficial effects of this preferred technical solution are: building a complete three-level communication transmission architecture, and realizing reliable information transmission from the wind turbine site to the centralized control center.

[0034] As a preferred solution of the wind turbine fire-fighting action linkage shutdown control method described in the present invention, the fire-fighting device includes an engine room ultra-fine dry powder fire extinguishing device, a control cabinet aerosol fire extinguishing device, a small dry powder fire extinguishing device at the bottom of the generator, and a temperature-sensitive magnetic power generation component;

[0035] The passive normally open contacts of the fire-fighting device are connected in parallel to form an action detection circuit.

[0036] The beneficial effects of this preferred technical solution are: forming a unified action detection circuit through parallel connection, simplifying the system structure, reducing the transformation cost, and being particularly suitable for the upgrade and transformation needs of old units.

[0037] In a second aspect, the present invention provides a fan fire action linkage shutdown control system, comprising a passive normally open contact module, an intermediate relay module, a fan main control system module, a cooling fan control module, and a communication network module;

[0038] When the fire-fighting device is activated, the passive normally open contact module closes and acts as a signal trigger;

[0039] The intermediate relay module is in the action detection circuit of the passive normally open contact of the fire-fighting device. When the passive normally open contact of the fire-fighting device is closed, the intermediate relay is energized.

[0040] The fan main control system module is used to receive signals from the passive normally open contacts of the fire protection device;

[0041] The cooling fan control module is used for controlling the device for cooling;

[0042] The communication network module is used to transmit the fire protection device action alarm signal generated by the fan main control system to the booster station central control room and the centralized control center.

[0043] In a third aspect, the present invention provides an electronic device, comprising:

[0044] memory and processor;

[0045] The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the computer-executable instructions are executed by the processor, the steps of the fan fire-fighting action linkage shutdown control method are implemented.

[0046] In a fourth aspect, the present invention provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the fan fire-fighting action linkage shutdown control method.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] By adding actuating contacts to the firefighting device and integrating them with an intermediate relay for signal conversion and multi-channel control, the technical challenge of passive firefighting systems' inability to implement status monitoring has been effectively resolved. When a firefighting device activates, the system immediately sends an alarm signal to the fan master control system, ensuring that maintenance personnel are immediately aware of the device's status. Whether it's a false alarm or an actual fire, it can be promptly identified and addressed, significantly improving the reliability and safety of the firefighting system.

[0049] A hardware circuit cutoff method is used to implement fan linkage shutdown control after the fire-fighting device is activated. When the fire-fighting device is activated, the normally closed contacts of the intermediate relay are disconnected, directly cutting off the control circuits of the gearbox cooling fan, generator cooling fan, and cabin circulation fan, causing each fan to stop running immediately. This hardware-level linkage control method has a fast response speed and high reliability. It can effectively prevent the spread of fire and buy valuable time for fire fighting. At the same time, this solution requires minimal modification to the existing unit program, making it particularly suitable for the renovation and upgrading of old units and has good engineering applicability. In addition, by adding a surge protector and an independent circuit breaker in the signal circuit, the overall anti-interference capability and maintenance convenience are further improved, ensuring the stable operation of the fire linkage system under various environmental conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0051] Figure 1 This is an overall structural diagram of a wind turbine fire-fighting action linkage shutdown control method according to an embodiment of the present invention.

[0052] Figure 2 This is a diagram of the fire-fighting device action linkage shutdown control method for a fan fire-fighting action linkage shutdown according to an embodiment of the present invention.

[0053] Figure 3 This is a diagram of the fire-fighting device action signal access and upload of the fan fire-fighting action linkage shutdown control method described in one embodiment of the present invention. DETAILED DESCRIPTION

[0054] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. It is obvious that the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in this field without creative work should fall within the scope of protection of the present invention.

[0055] Example 1, reference Figure 1 , as an embodiment of the present invention, provides a fan fire action linkage shutdown control method, comprising the following steps S1 to S5:

[0056] S1. Set up passive normally open contacts on each fire-fighting device of the wind turbine generator set, connect the passive normally open contacts of multiple fire-fighting devices in parallel and then connect them to the digital input port of the wind turbine main control system;

[0057] S2. Connect an intermediate relay in series in the action detection circuit of the passive normally open contacts of the fire-fighting device. When any fire-fighting device is actuated, the passive normally open contacts of the fire-fighting device are closed, energizing the intermediate relay.

[0058] After S3 and the intermediate relay are energized, the multiple groups of normally closed auxiliary contacts of the intermediate relay are disconnected at the same time, cutting off the fire protection device action feedback signal circuit and the fan cooling fan control circuit respectively;

[0059] S4: After the fan main control system detects that the fire protection device action feedback signal circuit is disconnected, it generates a fire protection device action alarm signal and executes the fan shutdown procedure;

[0060] S5. The fan main control system uploads the fire-fighting device action alarm signal to the booster station central control room and centralized control center through the communication network, realizing remote monitoring of the fire-fighting device action status and fault handling.

[0061] It should be noted that the passive fire protection system is automatically activated through temperature sensing via thermistor wires. Although it can automatically release fire extinguishing agents when a fire occurs, it has obvious technical defects: after the fire protection device is activated, there is no alarm record in the background system of the wind turbine unit, and the operation and maintenance personnel cannot grasp the operating status of the unit's fire protection system in real time. When the fire protection device malfunctions, it cannot be discovered and handled in time. What is more serious is that when the fire protection device is activated due to a real fire, the background system is also unable to obtain the alarm information in the first time, which seriously affects the timely handling of the fire.

[0062] Therefore, in response to the above-mentioned problems of fire protection system status monitoring and linkage control, steps S1-S5 are used to realize real-time monitoring of the fire protection device's operating status and hardware-level fan linkage shutdown control, ensuring that operation and maintenance personnel can grasp the operating status of the fire protection device at the first time. At the same time, the fan is immediately stopped by cutting off the hardware loop, effectively preventing the expansion of the fire spread.

[0063] Example 2, reference Figures 1 to 3 , which is an embodiment of the present invention, provides a fan fire-fighting action linkage shutdown control method based on the above embodiment.

[0064] In an embodiment of the present application, in step S1, an air switch and a surge protector are connected in series between the passive normally open contact of the fire-fighting device and the DC power supply; the air switch is used for safety isolation when the fire-fighting device is replaced; the surge protector is used to prevent lightning current from interfering with the action signal of the fire-fighting device.

[0065] Specifically, the air switch selected is a small circuit breaker with a rated current of 2A and a breaking capacity of 6kA, which can withstand the normal operating current of the 24V DC circuit and quickly disconnect the protection circuit in the event of a fault.

[0066] Specifically, the technical parameters of the surge protector are a maximum discharge current of 20kA, a protection voltage level of 24V, and a response time of less than 1ns. It can effectively suppress the impact of lightning strikes and transient overvoltages in the power grid on signal circuits.

[0067] It should be noted that the configuration of air switches and surge protectors not only improves the safety and reliability of the system, but also facilitates circuit isolation operations during daily maintenance work, avoiding the safety risks of live operations.

[0068] In an optional embodiment, the air switch in step S1 may also adopt a bipolar circuit breaker to cut off the positive and negative circuits at the same time, providing a higher level of safety protection, which is particularly suitable for wind turbines in high humidity or highly corrosive environments.

[0069] In another optional embodiment, the surge protector in step S1 can also be in the form of a combination of a gas discharge tube and a varistor, where the gas discharge tube is responsible for coarse protection and the varistor is responsible for fine protection, forming a two-level protection system to improve the lightning protection effect.

[0070] In this embodiment, in step S2, the first group of normally closed contacts of the intermediate relay is connected in series in the fire protection device action feedback signal circuit, the second group of normally closed contacts is connected in series in the gear box cooling fan control circuit, the third group of normally closed contacts is connected in series in the generator cooling fan control circuit, and the fourth group of normally closed contacts is connected in series in the cabin circulation fan control circuit.

[0071] Specifically, the first set of normally closed contacts is connected in series in the fire-fighting device action feedback signal circuit, which is connected to the digital input port of the fan main control system. The signal voltage is DC24V. When the first set of normally closed contacts is disconnected, the port voltage drops to 0V, and the main control system recognizes it as the fire-fighting device action state.

[0072] Specifically, the second group of normally closed contacts is connected in series in the gearbox cooling fan control circuit, and the contacts are connected in series to the control coil of the gearbox cooling fan contactor. When the contacts are disconnected, the contactor loses power and the gearbox cooling fan stops running.

[0073] Specifically, the third group of normally closed contacts is connected in series in the generator cooling fan control circuit. The contacts are connected in series to the control coil of the generator cooling fan contactor. When the contacts are disconnected, the contactor loses power and the generator cooling fan stops running.

[0074] Specifically, the fourth group of normally closed contacts is connected in series in the cabin circulation fan control circuit. The contacts are connected in series to the control coil of the cabin circulation fan contactor. When the contacts are disconnected, the contactor loses power and the cabin circulation fan stops running.

[0075] It should be noted that the four sets of independent normally closed contacts of the intermediate relay are used to control different functional circuits respectively, realizing precise control and comprehensive linkage after the fire-fighting device is activated, ensuring the independence and reliability of each control circuit, and avoiding the impact of single point failure on the function of the entire system.

[0076] In an optional embodiment, each group of normally closed contacts in step S2 may be provided with an indicator light in parallel. When the corresponding contact is disconnected, the indicator light goes out, making it easier for operation and maintenance personnel to intuitively judge the disconnection status of each circuit.

[0077] In this embodiment, in step S4, when the wind turbine main control system receives the fire protection device action alarm signal, it performs corresponding shutdown operations according to the preset fire safety level, specifically including A1 to A3:

[0078] A1. When the duration of the fire-fighting device action signal exceeds the preset threshold, an emergency shutdown is executed;

[0079] In this embodiment, the preset threshold is set to 3 seconds. When the fire-fighting device action signal lasts for more than 3 seconds, the fan main control system determines that it is a real fire situation and immediately executes the emergency shutdown procedure, including emergency braking of blades, quick disconnection of generators, and hydraulic system pressure relief.

[0080] A2. When the duration of the fire protection device action signal is within the preset threshold, a general shutdown is performed;

[0081] When the duration of the fire-fighting device action signal is within the range of 0.5-3 seconds, the fan main control system will judge it as a possible malfunction or minor abnormality and execute the general shutdown procedure, including slow braking of the blades, gradual load reduction and disconnection of the generator, and orderly shutdown of the system.

[0082] A3. When performing an emergency shutdown or a general shutdown, the shutdown information will be recorded in the fan operation log.

[0083] Shutdown information records include but are not limited to the fire-fighting device action time, duration, action type, fan operating parameters, shutdown method and reason, providing data support for subsequent fault analysis and system optimization.

[0084] It should be noted that by setting different time thresholds to distinguish between real action and false action of fire-fighting devices, unnecessary shutdowns due to temporary interference are avoided. At the same time, rapid response is ensured in real fire situations, thereby improving the intelligence and reliability of the system.

[0085] In an optional embodiment, step S4 can also perform differentiated processing according to the current operating status of the wind turbine. For example, emergency shutdown is performed first under high wind speed conditions, and the judgment time can be appropriately extended under low wind speed conditions to avoid unnecessary frequent shutdowns.

[0086] Cutting off the fan control circuit includes the following steps B1 to B4:

[0087] B1, the gearbox cooling fan control circuit is connected to the gearbox cooling fan through the first AC contactor;

[0088] Specifically, the coil control circuit of the first AC contactor is connected in series with the gear box cooling fan control signal through the second group of normally closed contacts of the intermediate relay. The main contact capacity of the contactor is AC380V / 25A, which can reliably control the start and stop of the gear box cooling fan.

[0089] B2, the generator cooling fan control circuit is connected to the generator cooling fan through the second AC contactor;

[0090] Specifically, the coil control circuit of the second AC contactor is connected in series with the generator cooling fan control signal through the third group of normally closed contacts of the intermediate relay. The main contact capacity of the contactor is AC380V / 20A, which is adapted to the power requirement of the generator cooling fan.

[0091] B3, the cabin circulation fan control circuit is connected to the cabin circulation fan through the third AC contactor;

[0092] Specifically, the coil control circuit of the third AC contactor is connected in series with the cabin circulation fan control signal through the fourth group of normally closed contacts of the intermediate relay. The main contact capacity of the contactor is AC380V / 15A, which controls the operating state of the cabin circulation fan.

[0093] B4. When the normally closed contact of the intermediate relay is disconnected, the first AC contactor, the second AC contactor and the third AC contactor lose power and are disconnected, and the corresponding fans stop running.

[0094] Specifically, when the fire-fighting device is activated and the intermediate relay is energized, each group of normally closed contacts is disconnected at the same time, cutting off the coil circuits of the three AC contactors. After the contactor loses power, the main contacts are disconnected and the corresponding fans stop running immediately. The response time does not exceed 50ms.

[0095] It should be noted that the use of AC contactors as the executive elements of fan control realizes the effective isolation of strong current and weak current. The contactor coil is controlled by the normally closed contacts of the intermediate relay to ensure that the fan can be reliably shut down after the fire-fighting device is activated, avoiding the airflow from fueling combustion and expanding the scope of the fire.

[0096] In an optional embodiment, each AC contactor in steps B1 to B3 may also be provided with an auxiliary normally open contact in parallel for feeding back the actual operating status of the contactor to the main control system to confirm the fan shutdown status.

[0097] In this embodiment, in step S5, the communication network transmission paths are C1 to C3:

[0098] C1. The fan master control system transmits the fire protection device action alarm signal to the booster station communication switch through the fan communication switch;

[0099] Specifically, the wind turbine communication switch uses industrial Ethernet to transmit data to the booster station communication switch, and the transmission protocol adopts Modbus TCP or IEC61850 standard.

[0100] C2, then upload the fire protection device action alarm signal to the centralized control center through the booster station communication switch;

[0101] Specifically, the communication switch at the booster station acts as a convergence node, uploading the fan's fire-fighting device action alarm signal to the centralized control center via optical fiber communication, ensuring the stability and real-time performance of signal transmission.

[0102] C3. The centralized control center identifies and processes the fire protection device action alarm information according to the preset fault code table;

[0103] Specifically, the centralized control center adds a corresponding fault code point table and sets a special fault code for the fire protection device action alarm. After receiving the fault code, the operation and maintenance personnel immediately start the emergency response procedure to ensure timely fault handling and fire handling.

[0104] It should be noted that through the hierarchical transmission architecture of fan switches and booster station switches, reliable transmission of fire-fighting device action signals from the fan main control system to the centralized control center is achieved, ensuring remote monitoring of the fire-fighting device action status and ensuring that operation and maintenance personnel can grasp the operating status of the unit fire-fighting system at the first time.

[0105] In an optional implementation, a text message alarm function may be configured in step S5 to automatically send an alarm text message to the operation and maintenance person in charge when the fire-fighting device is activated, ensuring timely response and processing even when the centralized control center is unmanned.

[0106] In this embodiment, the fire-fighting device includes an ultra-fine dry powder fire extinguishing device in the cabin, an aerosol fire extinguishing device in the control cabinet, a small dry powder fire extinguishing device at the bottom of the generator, and a temperature-sensitive magnetic power generation component; the passive normally open contacts of the fire-fighting device are connected in parallel to form an action detection circuit.

[0107] Specifically, the cabin ultra-fine dry powder fire extinguishing device is installed inside the cabin to protect the transformers, control cabinets and other electrical equipment in the cabin. When the temperature reaches the preset threshold, it will automatically start through the temperature-sensing magnetic power generation component to release ultra-fine dry powder fire extinguishing agent.

[0108] Specifically, the control cabinet aerosol fire extinguishing device is installed inside each control cabinet to protect the electrical components inside the control cabinet. It uses temperature sensing to start and release aerosol fire extinguishing agent, which has the characteristics of rapid fire extinguishing and non-toxic and harmless.

[0109] Specifically, the small dry powder fire extinguishing device at the bottom of the generator is installed at the bottom of the generator to protect key components such as the generator bearings and lubrication system. It is automatically activated by sensing temperature through the temperature sensing line and releases a small dry powder fire extinguishing agent.

[0110] Specifically, the temperature-sensitive magnetic power generation component uses temperature changes to generate electricity to drive the fire-fighting device, without the need for external power supply, ensuring that the fire-fighting system can still operate normally when the fan is powered off.

[0111] Specifically, the passive normally open contacts of each fire-fighting device are in the form of dry contacts, which are connected in parallel to the digital input port of the fan main control system. When any fire-fighting device is activated, the corresponding passive normally open contact is closed to form a unified action detection signal.

[0112] It should be noted that the configuration of the above-mentioned fire-fighting devices covers the main fire risk areas of wind turbines. Through the temperature-sensing self-starting method and parallel contact design, a comprehensive fire protection system and a unified action monitoring mechanism are formed.

[0113] In this embodiment, if Figure 2 and Figure 3 As shown, intermediate relay K1 has four sets of normally closed contacts. The first set is the fire protection device's feedback signal, with one terminal connected to 24V and the other to the main control module's DI signal point. The second set is the gearbox cooling fan output signal, with one terminal connected to contactor KM1's A1 and the main control module's DO control output point. The third set is the generator cooling fan output signal, with one terminal connected to contactor KM2's A1 and the main control module's DO control output point. The fourth set is the cabin circulation fan output signal, with one terminal connected to contactor KM3's A1 and the main control module's DO control output point. During normal unit operation, F1 is in the closed position. When the fire protection device is operating normally, the normally open contacts on the main unit do not operate, intermediate relay K1 is de-energized, and its normally closed contacts do not operate. Fire protection device feedback signal DI1 receives 24V, and there is no alarm. The control circuits for gearbox cooling fan output signal DO1, generator cooling fan output signal DO2, and cabin circulation fan output signal DO3 are closed, and the main control unit normally controls the start and stop of the relevant fans. When any fire extinguishing device is activated, its normally open contact is closed, the intermediate relay K1 is energized, its normally closed contact is disconnected, the fan fire extinguishing device action feedback signal DI1 loses power and alarms, the gearbox cooling fan output signal DO1, the generator cooling fan output signal DO2, and the cabin circulation fan output signal DO3 control circuits are cut off, and the relevant fans stop.

[0114] The action signal of the fan fire protection system is connected to the fan PLC through the switch quantity, and the switch quantity signal is named "fan fire protection device action". When a fire occurs, the PLC will report the fault after receiving the signal and actively shut down the fan (the program can be modified to general shutdown and emergency shutdown). The circulating cooling fans of the cabin, generator, gearbox, etc. will stop to prevent the fire from expanding and ensure the safe and stable operation of the unit; the action signal will be transmitted to the booster station control room through the fan switch and the booster station switch, and the relevant fault code point table will be added. The action signal will be uploaded to the centralized control center to ensure timely fault handling and fire handling, and to ensure that the fire protection equipment can be used.

[0115] You can choose to connect the passive normally closed action contacts of the fire extinguishing device in series and then connect them to the intermediate relay, synchronize the fan fire fighting device action input signal, and connect the circulating cooling fan start output signal circuit of the cabin, generator, gear box, etc. to the normally open point of the intermediate relay; or the fire fighting device action input signal is still connected to the normally closed point of the intermediate relay, but the alarm mode of the DI point of the main control module can be reversed in high and low levels; hard-wired nodes can be added after the intermediate relay according to the electrical appliances that need to be cut off.

[0116] In summary, by adding actuating contacts to the firefighting device and integrating them with an intermediate relay for signal conversion and multi-channel control, the technical challenge of passive firefighting systems' inability to implement status monitoring has been effectively resolved. When a firefighting device activates, the system immediately sends an alarm signal to the fan master control system, ensuring that maintenance personnel are immediately aware of the device's status. Whether it's a false alarm or an actual fire, it can be promptly identified and addressed, significantly improving the reliability and safety of the firefighting system.

[0117] A hardware circuit cutoff method is used to implement fan linkage shutdown control after the fire-fighting device is activated. When the fire-fighting device is activated, the normally closed contacts of the intermediate relay are disconnected, directly cutting off the control circuits of the gearbox cooling fan, generator cooling fan, and cabin circulation fan, causing each fan to stop running immediately. This hardware-level linkage control method has a fast response speed and high reliability. It can effectively prevent the spread of fire and buy valuable time for fire fighting. At the same time, this solution requires minimal modification to the existing unit program, making it particularly suitable for the renovation and upgrading of old units and has good engineering applicability. In addition, by adding a surge protector and an independent circuit breaker in the signal circuit, the overall anti-interference capability and maintenance convenience are further improved, ensuring the stable operation of the fire linkage system under various environmental conditions.

[0118] Example 3. The above is a schematic scheme of a fan fire-fighting action linkage shutdown control method. It should be noted that the technical solution of this fan fire-fighting action linkage shutdown control system and the technical solution of the fan fire-fighting action linkage shutdown control method described above are based on the same concept. For details not described in detail in the technical solution of the fan fire-fighting action linkage shutdown control system in this embodiment, please refer to the description of the technical solution of the fan fire-fighting action linkage shutdown control method described above.

[0119] This embodiment also provides a fan fire action linkage shutdown control system, including a passive normally open contact module, an intermediate relay module, a fan main control system module, a cooling fan control module, and a communication network module;

[0120] When the fire protection device is activated, the passive normally open contact module closes and acts as a signal trigger;

[0121] The intermediate relay module is in the action detection circuit of the passive normally open contact of the fire protection device. When the passive normally open contact of the fire protection device is closed, the intermediate relay is energized.

[0122] The fan main control system module is used to receive signals from the passive normally open contacts of the fire protection device;

[0123] The cooling fan control module is used for the equipment control part of cooling;

[0124] The communication network module is used to transmit the fire protection device action alarm signal generated by the fan main control system to the booster station control room and centralized control center.

[0125] This embodiment also provides an electronic device suitable for the case of linked shutdown control of a fan fire-fighting action, comprising: a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute computer-executable instructions to implement the method for linked shutdown control of a fan fire-fighting action as proposed in the above embodiment.

[0126] This embodiment further provides a storage medium having a computer program stored thereon. When the program is executed by a processor, the method for realizing the wind turbine fire-fighting action linkage shutdown control method proposed in the above embodiment is implemented.

[0127] The storage medium proposed in this embodiment and the method for realizing the linked shutdown control of the fan fire-fighting action proposed in the above embodiment belong to the same inventive concept. The technical details not fully described in this embodiment can be referred to the above embodiment, and this embodiment has the same beneficial effects as the above embodiment.

[0128] Through the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented with the help of software and necessary general hardware, and of course can also be implemented by hardware. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a computer's floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods of various embodiments of the present invention.

[0129] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to 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 fan fire-fighting action linkage shutdown control method, characterized in that: The following steps are involved: Passive normally open contacts are set on each fire-fighting device of the wind turbine generator set, and the passive normally open contacts of multiple fire-fighting devices are connected in parallel and then connected to the digital input port of the wind turbine main control system; An intermediate relay is connected in series in the action detection circuit of the passive normally open contacts of the fire-fighting device. When any fire-fighting device is actuated, the passive normally open contacts of the fire-fighting device are closed, energizing the intermediate relay. After the intermediate relay is energized, multiple groups of normally closed auxiliary contacts of the intermediate relay are disconnected at the same time, respectively cutting off the fire protection device action feedback signal circuit and the fan cooling fan control circuit; After the fan main control system detects that the fire-fighting device action feedback signal circuit is disconnected, it generates a fire-fighting device action alarm signal and executes the fan shutdown procedure; The fan main control system uploads the fire-fighting device action alarm signal to the booster station control room and centralized control center through the communication network, realizing remote monitoring of the fire-fighting device action status and fault handling.

2. The fan fire-fighting action linkage shutdown control method according to claim 1, characterized in that: An air switch and a surge protector are connected in series between the passive normally open contact of the fire-fighting device and the DC power supply; The air switch is used for safety isolation when replacing the fire protection device; The surge protector is used to prevent lightning current from interfering with the action signal of the fire-fighting device.

3. The fan fire-fighting action linkage shutdown control method according to claim 2, characterized in that: The first group of normally closed contacts of the intermediate relay is connected in series in the fire protection device action feedback signal circuit, the second group of normally closed contacts is connected in series in the gear box cooling fan control circuit, the third group of normally closed contacts is connected in series in the generator cooling fan control circuit, and the fourth group of normally closed contacts is connected in series in the cabin circulation fan control circuit.

4. The fan fire-fighting action linkage shutdown control method according to claim 3, characterized in that: When the fan master control system receives the fire protection device action alarm signal, it performs the corresponding shutdown operation according to the preset fire safety level, specifically including: When the duration of the fire-fighting device action signal exceeds the preset threshold, an emergency shutdown is executed; When the duration of the fire protection device action signal is within the preset threshold range, a general shutdown is performed; When an emergency shutdown or a general shutdown is executed, the shutdown information is recorded in the fan operation log.

5. The wind turbine fire-fighting action linkage shutdown control method according to claim 4, characterized in that: Cutting off the fan cooling fan control circuit includes the following steps: The gearbox cooling fan control circuit is connected to the gearbox cooling fan through the first AC contactor; The generator cooling fan control circuit is connected to the generator cooling fan through the second AC contactor; The cabin circulation fan control circuit is connected to the cabin circulation fan through the third AC contactor; When the normally closed contact of the intermediate relay is disconnected, the first AC contactor, the second AC contactor and the third AC contactor lose power and are disconnected, and the corresponding fans stop running.

6. The wind turbine fire-fighting action linkage shutdown control method according to claim 5, characterized in that: The communication network transmission path is: The fan master control system transmits the fire protection device action alarm signal to the booster station communication switch via the fan communication switch; Then, the fire-fighting device action alarm signal is uploaded to the centralized control center through the communication switch of the booster station; The centralized control center identifies and processes the fire-fighting device action alarm information according to a preset fault code table.

7. The wind turbine fire-fighting action linkage shutdown control method according to claim 6, characterized in that: The fire-fighting equipment includes an ultra-fine dry powder fire extinguishing device in the engine room, an aerosol fire extinguishing device in the control cabinet, a small dry powder fire extinguishing device at the bottom of the generator, and a temperature-sensitive magnetic power generation component; The passive normally open contacts of the fire-fighting device are connected in parallel to form an action detection circuit.

8. A fan fire-fighting action linkage shutdown control system, applying the method according to any one of claims 1 to 7, characterized in that: Including passive normally open contact module, intermediate relay module, fan main control system module, cooling fan control module, and communication network module; When the fire-fighting device is activated, the passive normally open contact module closes and acts as a signal trigger; The intermediate relay module is in the action detection circuit of the passive normally open contact of the fire-fighting device. When the passive normally open contact of the fire-fighting device is closed, the intermediate relay is energized. The fan main control system module is used to receive signals from the passive normally open contacts of the fire protection device; The cooling fan control module is used for controlling the device for cooling; The communication network module is used to transmit the fire protection device action alarm signal generated by the fan main control system to the booster station central control room and the centralized control center.

9. An electronic device comprising: memory and processor; The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the computer-executable instructions are executed by the processor, the steps of the fan fire-fighting action linkage shutdown control method described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions, when executed by a processor, implement the steps of the wind turbine fire-fighting action linkage shutdown control method according to any one of claims 1 to 7.

Images