CN117175500A - Fire-fighting linkage control method, device and system for wind generating set - Google Patents

Abstract

A fire-fighting linkage control method, device and system for a wind generating set are provided. The fire-fighting linkage control device of the wind generating set comprises: the fire-fighting linkage controller is connected to the main controller, the fire-fighting system, the converter and the box-type transformer of the wind generating set; the fire-fighting linkage controller responds to a fire-fighting signal received from the fire-fighting system and sends a control signal for indicating disconnection of a safety chain to the main controller; after the control signal is sent, a grid-connected breaker opening control signal is sent to the converter and/or a low-voltage breaker opening control signal is sent to the box-type transformer; wherein the converter is connected to the grid via the box transformer.

Description

Fire-fighting linkage control method, device and system for wind generating set

Technical Field

The present disclosure relates generally to the field of power technology, and more particularly, to a fire fighting coordinated control method, device and system for a wind turbine generator set.

Background

Wind power plants refer to systems that convert wind energy into electrical energy. The wind generating set is very easy to generate friction overheat, brake overheat, lubricating oil leakage, cable overheat, insulation aging, overheat breakdown short circuit of electrical elements of a control cabinet, overheat short circuit in an engine, lightning and other conditions in the long-term operation process, and flammable liquid and flammable solid materials can be caused to catch fire, so that fire is easy to occur at the bottom of a cabin and a tower, the wind generating set is caused to burn, and the big fire can spread to grasslands and forests nearby the wind generating set in severe cases, so that larger social risks can be brought.

In order to prevent the occurrence of fire accidents and further expand the influence range of the wind generating set, a fire protection system is arranged on the wind generating set. The introduction of the fire protection system can effectively prevent the expansion of fire accidents and realize the extinction of the fire accidents in a sprouting state.

Disclosure of Invention

The embodiment of the disclosure provides a fire-fighting linkage control method, a fire-fighting linkage control device and a fire-fighting linkage control system for a wind generating set, which can improve the electrical safety of the set when the set breaks out from a fire and reduce the probability of an electrical firing event of the set.

According to a first aspect of embodiments of the present disclosure, there is provided a fire-fighting coordinated control device of a wind turbine, including: the fire-fighting linkage controller is connected to the main controller of the wind generating set, the fire-fighting system, the converter and the box-type transformer; the fire-fighting linkage controller responds to a fire-fighting signal received from the fire-fighting system and sends a control signal for indicating disconnection of the safety chain to the main controller; after the control signal is sent, a grid-connected breaker opening control signal is sent to the converter and/or a low-voltage breaker opening control signal is sent to the box-type transformer; wherein the converter is connected to the grid via a box transformer.

Optionally, the fire-fighting linkage controller starts timing by sending a control signal for indicating to disconnect the safety chain, and when the first preset duration is reached, the fire-fighting linkage controller sends a grid-connected breaker opening control signal to the converter; and responding to the fact that the grid-connected breaker opening feedback signal is not received within a second preset time period after the grid-connected breaker opening control signal is sent, and sending the low-voltage breaker opening control signal to the box-type transformer by the fire-fighting linkage controller.

Optionally, the method further comprises: a mode selection piece and an opening and closing control piece connected to the fire-fighting linkage controller; the fire-fighting linkage controller responds to the mode selection operation of the mode selection piece by a user, and sets the control mode into an automatic control mode or a manual control mode; under a manual control mode, the fire-fighting linkage controller responds to opening and closing control operation of an opening and closing control piece of a user and sends a low-voltage breaker opening control signal or a low-voltage breaker closing control signal to the box-type transformer.

Optionally, the method further comprises: the power supply comprises a first power supply source, a power supply monitoring circuit and a power supply switching circuit; the power supply monitoring circuit is used for monitoring the running state of the first power supply; when the first power supply is in a normal operation state, the power supply switching circuit controls the first power supply to supply power for the fire-fighting linkage control device; when the first power supply is in an abnormal state, the second power supply of the control box type transformer supplies power to the fire-fighting linkage control device.

Optionally, the method further comprises: a status indicator connected to the fire interlock controller, wherein the fire interlock controller controls the status indicator to indicate at least one of the following according to a current status: the fire-fighting linkage control device is in a normal working state, the fire-fighting linkage control device is in a fault state, the low-voltage circuit breaker is in a closing state, the low-voltage circuit breaker is in a breaking state, the fire-fighting linkage control device is in an automatic control mode, the fire-fighting linkage control device is in a manual control mode, the grid-connected circuit breaker is in a breaking state, and the grid-connected circuit breaker is in a closing state.

According to a second aspect of the embodiments of the present disclosure, there is provided a fire-fighting coordinated control method of a wind turbine, including: responding to the received fire control signal, and controlling the safety chain of the wind generating set to be disconnected; in response to a safety chain disconnection of the wind power plant, controlling a grid-connected circuit breaker of a converter of the wind power plant to open and/or controlling a low-voltage circuit breaker of a box transformer to open, wherein the converter is connected to a power grid via the box transformer.

Optionally, the step of controlling the grid-connected circuit breaker of the converter of the wind power plant to open and/or controlling the low-voltage circuit breaker of the box-type transformer to open in response to the safety chain of the wind power plant being disconnected comprises: the method comprises the steps of responding to the wind generating set to finish the propeller collection and shutdown due to the disconnection of a safety chain, and controlling the grid-connected circuit breaker to break; and controlling the low-voltage circuit breaker to open the gate in response to the failure of the grid-connected circuit breaker to complete the opening action.

Optionally, the method further comprises: setting the control mode to an automatic control mode or a manual control mode in response to a mode selection operation by a user; and in the manual control mode, the switching-off or switching-on of the low-voltage circuit breaker is controlled in response to switching-off and switching-on control operation of a user.

According to a third aspect of embodiments of the present disclosure, there is provided a fire fighting coordinated control system of a wind turbine, comprising: a safety chain control unit configured to control the safety chain of the wind generating set to be disconnected in response to the received fire signal; and the switching-on/off control unit is configured to control the grid-connected circuit breaker of the converter of the wind generating set to switch off and/or control the low-voltage circuit breaker of the box-type transformer to switch off in response to the disconnection of the safety chain of the wind generating set, wherein the converter is connected to a power grid through the box-type transformer.

According to a fourth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to perform the fire fighting coordinated control method of a wind turbine set as described above.

According to a fifth aspect of embodiments of the present disclosure, there is provided a fire protection coordinated control system of a wind turbine, the control system comprising: a processor; and the memory is used for storing a computer program, and when the computer program is executed by the processor, the processor is caused to execute the fire-fighting coordinated control method of the wind generating set.

According to the fire-fighting linkage control method, device and system of the wind generating set, under the condition that a fire disaster is determined to occur through a fire-fighting system of the wind generating set, the wind generating set is controlled to be automatically stopped, and a grid-connected circuit breaker and/or a box low-voltage circuit breaker are connected in parallel to conduct power failure of the wind generating set. By associating the original independent unit fire-fighting system with the unit main control, the converter and the box-type transformer, more reliable unit shutdown and power failure are realized when a fire disaster occurs, and secondary fire disaster caused by short circuit is avoided.

Additional aspects and/or advantages of the present general inventive concept will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the general inventive concept.

Drawings

The foregoing and other objects and features of exemplary embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate the embodiments by way of example, in which:

FIG. 1 illustrates a block diagram of a fire fighting coordinated control device of a wind turbine according to a first exemplary embodiment of the present disclosure;

FIG. 2 illustrates a block diagram of a fire fighting coordinated control device of a wind turbine according to a second exemplary embodiment of the disclosure;

FIG. 3 illustrates a flowchart of a power switching method according to an exemplary embodiment of the present disclosure;

FIG. 4 illustrates a flow chart of a fire fighting coordinated control method of a wind turbine generator set according to an exemplary embodiment of the disclosure;

FIG. 5 illustrates a flow chart of a fire fighting coordinated control method of a wind turbine according to another exemplary embodiment of the disclosure;

FIG. 6 illustrates a block diagram of a fire fighting coordinated control system of a wind turbine generator set according to an exemplary embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments will be described below in order to explain the present disclosure by referring to the figures.

Fig. 1 shows a block diagram of a fire fighting coordinated control device of a wind turbine according to a first exemplary embodiment of the present disclosure.

As shown in fig. 1, a fire-fighting coordinated control device 100 of a wind turbine according to a first exemplary embodiment of the present disclosure includes: fire fighting linkage controller 10.

The fire fighting coordinated controller 10 is connected to the main controller 200 of the wind generating set, the fire fighting system 300, the converter 400 and the box transformer 500. The converter 400 of the wind power plant is connected to the grid via a box transformer 500.

As an example, the fire fighting coordinated controller 10 may be connected to the main controller 200, the fire fighting system 300, the converter 400, and the box transformer 500 of the wind generating set by a wired or wireless manner to interact with the main controller 200, the fire fighting system 300, the converter 400, and the box transformer 500.

As an example, the fire protection system 300 of the wind power generation set may monitor any part of the wind power generation set itself or around the wind power generation set for a fire, and generate a fire protection signal to the fire protection linkage controller 10 when the fire is monitored. For example, the fire protection system 300 may detect whether a fire is occurring through various suitable types of sensors. By way of example, fire protection system 300 may include a pair of digital output dry contacts that are hard wired to fire protection controller 10 to enable reliable and efficient transmission of fire signals to fire protection controller 10.

The fire-fighting coordinated controller 10 transmits a control signal indicating disconnection of the safety chain to the main controller 200 in response to the fire-fighting signal received from the fire-fighting system 300; and after transmitting the control signal, transmits a grid-connected breaker opening control signal to the converter 400 and/or transmits a low-voltage breaker opening control signal to the tank transformer 500. According to the exemplary embodiments of the present disclosure, the wind power generator set can be controlled to be shut down and powered down in time when a fire occurs on or around the wind power generator set itself.

Specifically, the fire signal is a signal for indicating that the wind turbine generator set itself or the surroundings have a fire. The grid-connected breaker opening control signal is a signal for controlling the grid-connected breaker to execute opening action. The low-voltage circuit breaker opening control signal is a signal for controlling the low-voltage circuit breaker to execute opening action.

The safety chain of the wind generating set is a system for protecting the safety of the wind generating set and is positioned at the stage with the highest priority in the wind generating set. When some events which easily cause major safety accidents of the wind generating set occur, the safety chain is disconnected in time so that the set can be stopped in an emergency, and thus, the major loss of the set is avoided.

As an example, the fire protection linkage controller 10 may be connected to a safety chain in the main controller 200. As an example, the fire-fighting linkage controller 10 may directly transmit a control signal indicating disconnection of the safety chain to the safety chain in the main controller 200; alternatively, the safety chain disconnection may be controlled by the main controller 200 in response to a received control signal indicating disconnection of the safety chain.

As an example, the fire ganged controller 10 may be connected to a controller of the converter 400 or a grid-tie breaker. As an example, the fire-fighting linkage controller 10 may directly send a grid-connected breaker opening control signal to the grid-connected breaker; or, the grid-connected breaker opening control signal can be sent to the controller of the converter 400, so that the controller of the converter 400 responds to the received grid-connected breaker opening control signal to control the grid-connected breaker to open.

As an example, the fire ganged controller 10 may be connected to a controller of the box transformer 500 or a low voltage circuit breaker. The low-voltage circuit breaker of the box-type transformer 500 is a low-voltage side circuit breaker and a circuit breaker close to the unit side. As an example, the fire protection linkage controller 10 may directly transmit a low voltage circuit breaker opening control signal to the low voltage circuit breaker; alternatively, a low voltage circuit breaker trip control signal may be sent to the controller of the tank transformer 500 to control the low voltage circuit breaker trip by the controller of the tank transformer 500 in response to the received low voltage circuit breaker trip control signal.

As an example, the fire-fighting coordinated controller 10 may employ a PLC module integrated with an I/O port, an automatic time-setting function, an ethernet communication interface, etc.

As an example, the fire-fighting linkage controller 10 starts timing from sending a control signal indicating to disconnect the safety chain, and when a first preset duration is reached, sends a grid-connected breaker opening control signal to the converter 400; in response to not receiving the grid-tie breaker trip feedback signal from the converter 400 within a second preset time period after sending the grid-tie breaker trip control signal, the fire protection linkage controller 10 sends a low voltage breaker trip control signal to the box transformer 500. The grid-connected breaker opening feedback signal is a signal for indicating that the grid-connected breaker has completed the opening action (i.e., the grid-connected breaker has been in an open state). For example, in the case that the grid-connected breaker opening feedback signal is received from the converter 400 within a second preset time period after the grid-connected breaker opening control signal is transmitted, the fire-fighting linkage controller 10 does not need to transmit the low-voltage breaker opening control signal to the box-type transformer 500. For example, the first preset time period may be set based on the time required for the unit to stop.

For example, the fire protection linkage controller 10 may send a grid-connected breaker opening control signal to the converter 400 after a delay of 16s from sending a control signal indicating to disconnect the safety chain; if the grid-connected breaker opening feedback signal of the converter 400 cannot be received within 5s after the grid-connected breaker opening control signal is sent, the fire-fighting linkage controller 10 sends a low-voltage breaker opening control signal to the box-type transformer 500, and after the low-voltage breaker opening action is completed, the fire-fighting linkage controller 10 can receive the low-voltage breaker opening feedback signal fed back by the box-type low-voltage breaker. The grid-connected circuit breaker is controlled to be opened only by 16 seconds, and the about 15 seconds of the closing and stopping time of the unit is mainly considered, so that the unit equipment is easy to generate large impact and the equipment is damaged due to the premature opening. The delay time can be set differently according to different models.

The fire protection system of the prior art has the following problems: 1) The fire control system of the unit is an independent system, and the control system is difficult to access to the main control system; 2) After the fire-fighting system is triggered, the unit has no effective countermeasures and still has the possibility of electrification; 3) After the fire protection system is triggered, the system has the phenomenon of short circuit, and the voltage drop of the box transformer control system can be caused at the moment, so that the box transformer circuit breaker cannot be normally disconnected.

According to the exemplary embodiment of the disclosure, the fire-fighting linkage control device 100 which is communicated with the main control, the converter and the box transformer is newly added, and under the condition that the fire disaster is determined to occur through the fire-fighting system 300, the safety chain is disconnected, so that the automatic back-pitching of the unit blades is realized, the rotating speed of the unit is further reduced, the shutdown action of the unit is realized, the main shaft brake locking caused by the sudden power failure of the unit is avoided, and the occurrence of the tower falling accident is prevented. After the machine set is stopped, the linkage grid-connected circuit breaker is powered off; if the grid-connected circuit breaker fails to break, the linkage box becomes a low-voltage circuit breaker to break the power, so that on one hand, the power failure of the unit can be effectively ensured to avoid secondary fire caused by short circuit, and on the other hand, the service life of the box-type circuit breaker can be prolonged on the premise of realizing the power failure of the unit.

Fig. 2 shows a block diagram of a fire fighting coordinated control device of a wind turbine according to a second exemplary embodiment of the present disclosure.

Referring to fig. 2, the fire-fighting coordinated control device 100 may include, in addition to the fire-fighting coordinated controller 10: a mode selector 20 and an opening and closing control 30 connected to the fire fighting coordinated controller 10.

The mode selector 20 is used for a user to select an automatic control mode or a manual control mode, in other words, a user can select a desired control mode by manual operation of the mode selector 20. For example, the mode selector 20 may be a two-position selector switch, corresponding to an automatic mode and a manual mode, respectively, and may send the current mode status to the fire-fighting linkage controller 10. As an example, the fire-fighting coordinated controller 10 sets the control mode to the automatic control mode or the manual control mode in response to a mode selection operation of the mode selector 20 by a user.

The opening and closing control member 30 is used for a user to perform an opening control operation or a closing control operation on the low-voltage circuit breaker. In other words, the user can directly control the low-voltage circuit breaker to perform the opening or closing operation by the manual operation of the opening and closing control member 30. For example, the opening and closing control 30 may be an opening and closing button, for example, a self-resetting button, respectively corresponding to opening and closing, and may transmit the current state to the fire-fighting linkage controller 10. The opening and closing control 30 can only be activated when the mode selector 20 is in the manual mode. In other words, when the mode selector 20 is in the automatic control mode, the opening/closing control 30 is disabled.

As an example, the fire-fighting linkage controller 10 transmits a low-voltage breaker opening control signal or a low-voltage breaker closing control signal to the box transformer 500 in response to an opening/closing control operation of the opening/closing control piece 30 by a user in a manual control mode. Specifically, in response to a switching-off control operation of the switching-off and switching-on control member 30 by a user, a low-voltage circuit breaker switching-off control signal is transmitted to the box-type transformer 500; in response to a closing control operation of the opening and closing control piece 30 by a user, a low-voltage circuit breaker closing control signal is transmitted to the box transformer 500.

As an example, the fire-fighting coordinated control device 100 may further include: a first power supply 40, a power supply monitoring circuit 50, and a power supply switching circuit 60.

The power supply monitoring circuit 50 is configured to monitor an operation state of the first power supply 40. As an example, when the operation state of the first power supply 40 is normal, the power supply monitoring circuit 50 is in a high level state, whereas when the operation state of the first power supply 40 is abnormal, the power supply monitoring circuit 50 is in a low level state. The status signal of the power supply monitoring circuit 50 is usually used as a trigger signal for the operation of the power supply switching circuit 60, and meanwhile, the operation status of the first power supply 40 can be fed back to the fire-fighting linkage controller 10. For example, the power supply monitoring circuit 50 may directly provide the signal to the power supply switching circuit 60, or may provide the signal to the fire-fighting coordinated controller 10, and the signal to the power supply switching circuit 60 from the fire-fighting coordinated controller 10. For example, the first power supply 40 may be an uninterruptible power supply UPS.

As an example, the power switching circuit 60 may be used to switch the first power supply 40 and the second power supply in the box transformer 500 to supply power to the fire aggregate control device 100. Specifically, when the first power supply 40 is in a normal operation state, the power supply switching circuit 60 may control the first power supply 40 to supply power to the fire-fighting coordinated control device 100; when the first power supply 40 is in an abnormal state, the second power supply in the control box type transformer 500 supplies power to the fire-fighting coordinated control device 100.

According to an exemplary embodiment of the present disclosure, a dual power supply mode is employed. As shown in fig. 3, when the fire control linkage control device 100 is powered on for the first time, self-checking is first performed to determine the state of the power supply monitoring circuit 50, and in general, when the power supply monitoring circuit 50 is in a low level state during the first power on, after a delay of 2s, the power supply switching circuit 60 controls the second power supply to supply power to the fire control linkage control device 100. When the fire-fighting coordinated control device 100 enters a stable running state, the power monitoring circuit 50 is in a high-level state when the first power supply 40 is in a normal state, and at the moment, the second power supply is controlled to stop supplying power to the fire-fighting coordinated control device 100, and after time delay is 2s, the first power supply 40 is controlled to start supplying power to the fire-fighting coordinated control device 100.

For example, when the first power supply 40 is working normally, the power supply monitoring circuit 50 is in a high level state, and at this time, the first power supply loop in the power supply switching circuit 60 is turned on, and the first power supply 40 starts to supply power to the fire-fighting coordinated control device 100. When the first power supply 40 is abnormal, the power supply monitoring circuit 50 is in a low level state, the delay relay starts to work, and after the delay time is 2s, the second power supply loop in the power supply switching circuit 60 is turned on, and the second power supply starts to supply power to the fire-fighting linkage control device 100. After the first power supply 40 is recovered to be normal, the power supply monitoring circuit 50 is in a high level state, the second power supply is controlled to stop supplying power to the fire-fighting coordinated control device 100, the delay relay starts to work, and after the delay time is 2s, the first power supply 40 starts to supply power to the fire-fighting coordinated control device 100.

As an example, the time for the dual power switch cannot exceed 2s, mainly because the fire fighting coordinated controller 10 will be powered off after exceeding 2 s.

As an example, the fire-fighting coordinated control device 100 may further include: status indicator 70 connected to fire aggregate controller 10.

As an example, the fire ganged controller 10 may control the status indicator 70 to indicate at least one of the following according to the current status: the fire-fighting coordinated control device 100 is in a normal working state, the fire-fighting coordinated control device 100 is in a fault state, the low-voltage circuit breaker is in a closing state, the low-voltage circuit breaker is in a brake-separating state, the fire-fighting coordinated control device 10 is in an automatic control mode, the fire-fighting coordinated control device 10 is in a manual control mode, the grid-connected circuit breaker is in a brake-separating state, and the grid-connected circuit breaker is in a closing state.

According to an exemplary embodiment of the present disclosure, a manual opening and closing function and a status indication function are added. When the mode selector 20 is in the manual control mode state, the manual opening/closing function is in effect at this time. The manual opening and closing function and the original manual opening and closing function of the box transformer system belong to the parallel connection relationship, and belong to the supplement of the original manual function of the box transformer system. When the unit is in emergency, the opening and closing control of the low-voltage circuit breaker can be performed on site through the opening and closing control piece 30. The opening and closing state of the tank low-voltage circuit breaker can be judged by the state indicator 70.

As an example, in a normal state of the fire interlock control device 100, the mode selector 20 may be placed in an automatic mode state, at which time the running indicator light in the status indicator 70 is on. When the emergency situation of the unit needs to be controlled manually, the user can put the mode selection member 20 into the manual mode state, so that the opening and closing control member 30 can be effective, and the fault indicator lamp in the state indicator 70 is on.

Exemplary embodiments according to the present disclosure have the following advantages over the prior art:

1. the fire control system in the prior art can be fully utilized, the control of the existing load of the unit is realized by adding the fire control linkage control device 100, the implementation is convenient, and the maintenance is convenient and simple.

2. Independent of the unit main control system, the main control program does not need to be modified in the implementation process, and the implementation is convenient and the cost is low.

3. The fire state of the fire extinguishing system can be actively collected, and under the condition that the fire disaster of the unit is determined, the automatic power-off function of the unit is realized, and the secondary fire disaster caused by short circuit is avoided.

4. Under the condition that the unit is determined to be in fire, the safety chain is disconnected, so that the automatic back-pitching of the unit blades is realized, the rotating speed of the unit is further reduced, the shutdown action of the unit is realized, the main shaft brake locking caused by sudden power failure of the unit is avoided, and the tower falling accident is prevented.

5. After the machine set is stopped, the linkage grid-connected circuit breaker is powered off; if the grid-connected circuit breaker fails to be disconnected, the box-type low-voltage circuit breaker can be linked to power off, and the service life of the box-type low-voltage circuit breaker can be prolonged on the premise of realizing power off of a unit.

6. The dual-power supply mode is adopted, the UPS is adopted for power supply of the first power supply loop, the switching-on and switching-off control of the circuit breaker can still be realized when the low-voltage ride through of the unit occurs, and the power failure of the unit is realized.

7. The function is comprehensive, and the two working modes of automatic and manual control are provided. Besides an automatic working mode, when manual opening and closing operation is needed, the automatic opening and closing device can be selected through a mode selection switch, and maintenance is convenient.

8. The manual opening and closing function is added, and the function of realizing the remote manual opening and closing box-type transformer substation breaker in the fire-fighting linkage control device 100 is added on the basis that the opening and closing operation of the original box-type transformer substation breaker on the breaker body and the on-site opening and closing control of the box-type transformer substation are not influenced.

9. The method has wide applicability and is suitable for the reconstruction of all old units and the configuration of new units.

According to the firefighting linkage control device of the exemplary embodiment of the present disclosure, the firefighting linkage control device is simple in structure, reasonable in design, small in size, convenient to implement, low in cost, convenient and simple to maintain, high in working stability and reliability, good in expandability, and wide in applicability.

FIG. 4 illustrates a flow chart of a fire fighting coordinated control method of a wind turbine generator set according to an exemplary embodiment of the present disclosure.

Referring to fig. 4, in step S101, a safety chain of a wind turbine generator set is controlled to be disconnected in response to a received fire signal.

As an example, the fire signal is a signal for indicating that the wind power generation set itself or the surroundings have a fire.

In step S102, in response to the safety chain of the wind turbine being disconnected, the grid-connected circuit breaker of the converter of the wind turbine is controlled to be opened, and/or the low-voltage circuit breaker of the box-type transformer is controlled to be opened. The converter is connected to the grid via the box transformer.

As an example, step S102 may include: firstly, responding to the wind generating set to stop when the wind generating set is closed due to the disconnection of the safety chain, and controlling the grid-connected breaker to break; and then, in response to the grid-connected circuit breaker failing to complete the opening action, controlling the opening of the low-voltage circuit breaker.

As an example, step S102 may include: when timing is started from a control signal for indicating to disconnect a safety chain, a grid-connected breaker switching-off control signal is sent to the converter when a first preset duration is reached; and responding to the fact that the grid-connected breaker opening feedback signal is not received within a second preset time period after the grid-connected breaker opening control signal is sent, and sending the low-voltage breaker opening control signal to the box-type transformer. For example, when the grid-connected breaker opening feedback signal is received from the converter within a second preset time period after the grid-connected breaker opening control signal is sent, the low-voltage breaker opening control signal does not need to be sent to the box-type transformer. For example, the first preset time period may be set based on the time required for the unit to stop.

The grid-connected breaker opening control signal is a signal for controlling the grid-connected breaker to execute opening action. The low-voltage circuit breaker opening control signal is a signal for controlling the low-voltage circuit breaker to execute opening action. The grid-connected breaker opening feedback signal is a signal for indicating that the grid-connected breaker has completed the opening action (i.e., the grid-connected breaker has been in an open state).

As an example, the fire-fighting coordinated control method of a wind turbine according to an exemplary embodiment of the present disclosure may further include: the control mode is set to an automatic control mode or a manual control mode in response to a mode selection operation by a user.

As an example, the fire-fighting coordinated control method of a wind turbine according to an exemplary embodiment of the present disclosure may further include: and in the manual control mode, the switching-off or switching-on of the low-voltage circuit breaker is controlled in response to switching-off and switching-on control operation of a user.

According to the exemplary embodiment of the disclosure, after the fire signal is detected, the feathering of the unit is stopped, the automatic power-off of the unit is completed, and the secondary fire and the condition of tower inversion of the unit are avoided; by adopting triple redundant control, after the unit is in fire, the unit can be ensured to be normally stopped and powered off, the occurrence of secondary fire is avoided, and the service life of the medium-low voltage circuit breaker in the box transformer can be effectively prolonged; the on-site control function is added, and when the emergency situation does not occur, the on-site switching control can be performed when the case is removed for operation.

FIG. 5 illustrates a flow chart of a fire fighting coordinated control method of a wind turbine generator set according to another exemplary embodiment of the disclosure.

As shown in fig. 5, in the automatic control mode, the safety chain of the wind generating set is controlled to be disconnected in response to the received fire control signal; after a control signal for indicating to disconnect a safety chain is sent out and delayed for 16 seconds, a grid-connected breaker opening control signal is sent to the converter; and if the grid-connected breaker opening feedback signal is not received from the converter within 5 seconds after the grid-connected breaker opening control signal is sent, sending a low-voltage breaker opening control signal to the box-type transformer.

And in the manual control mode, the switching-off or switching-on of the low-voltage circuit breaker is controlled in response to switching-off and switching-on control operation of a user.

FIG. 6 illustrates a block diagram of a fire fighting coordinated control system of a wind turbine generator set according to an exemplary embodiment of the present disclosure.

As shown in fig. 6, a fire fighting coordinated control system of a wind turbine according to an exemplary embodiment of the present disclosure includes: a safety chain control unit 101 and an opening/closing control unit 102.

Specifically, the safety chain control unit 101 is configured to control the safety chain disconnection of the wind turbine generator set in response to the received fire signal.

The opening and closing control unit 102 is configured to control opening of a grid-connected circuit breaker of a converter of the wind turbine generator set and/or to control opening of a low-voltage circuit breaker of a box-type transformer in response to a safety chain of the wind turbine generator set being opened. The converter is connected to the grid via a box transformer.

As an example, the opening and closing control unit 102 may be configured to: firstly, controlling grid-connected circuit breaker to break in response to the wind generating set to stop when the wind generating set is closed due to the disconnection of a safety chain; and then, in response to the grid-connected circuit breaker failing to complete the opening action, controlling the opening of the low-voltage circuit breaker.

As an example, the opening and closing control unit 102 may be configured to: when timing is started from a control signal for indicating to disconnect a safety chain, a grid-connected breaker switching-off control signal is sent to the converter when a first preset duration is reached; and responding to the fact that the grid-connected breaker opening feedback signal is not received within a second preset time period after the grid-connected breaker opening control signal is sent, and sending the low-voltage breaker opening control signal to the box-type transformer. For example, when the grid-connected breaker opening feedback signal is received from the converter within a second preset time period after the grid-connected breaker opening control signal is sent, the low-voltage breaker opening control signal does not need to be sent to the box-type transformer. For example, the first preset time period may be set based on the time required for the unit to stop.

The grid-connected breaker opening control signal is a signal for controlling the grid-connected breaker to execute opening action. The low-voltage circuit breaker opening control signal is a signal for controlling the low-voltage circuit breaker to execute opening action. The grid-connected breaker opening feedback signal is a signal for indicating that the grid-connected breaker has completed the opening action (i.e., the grid-connected breaker has been in an open state).

As an example, the fire-fighting coordinated control system of a wind turbine according to an exemplary embodiment of the present disclosure may further include: a mode setting unit (not shown) configured to set the control mode to an automatic control mode or a manual control mode in response to a mode selection operation by a user.

As an example, the opening and closing control unit 102 may be configured to: and in the manual control mode, the switching-off or switching-on of the low-voltage circuit breaker is controlled in response to switching-off and switching-on control operation of a user.

It should be appreciated that specific processes performed by the fire fighting coordinated control system of the wind turbine according to the exemplary embodiment of the present disclosure have been described in detail with reference to fig. 1 to 5, and related details will not be repeated here.

It should be appreciated that various units in a fire coordinated control system of a wind turbine may be implemented as hardware components and/or software components in accordance with exemplary embodiments of the present disclosure. The individual units may be implemented, for example, using a Field Programmable Gate Array (FPGA) or an Application Specific Integrated Circuit (ASIC), depending on the processing performed by the individual units as defined.

Exemplary embodiments of the present disclosure provide a computer-readable storage medium storing a computer program, which when executed by a processor, causes the processor to perform the fire fighting coordinated control method of a wind turbine generator set as in the above-described exemplary embodiments. The computer readable storage medium is any data storage device that can store data which can be read by a computer system. Examples of the computer readable storage medium include: read-only memory, random access memory, compact disc read-only, magnetic tape, floppy disk, optical data storage device, and carrier waves (such as data transmission through the internet via wired or wireless transmission paths).

The fire-fighting coordinated control system of a wind turbine according to an exemplary embodiment of the present disclosure includes: a processor (not shown) and a memory (not shown), wherein the memory stores a computer program which, when executed by the processor, causes the processor to perform the fire fighting coordinated control method of a wind turbine generator set as in the above-described exemplary embodiment.

Although a few exemplary embodiments of the present disclosure have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.

Claims (11)

1. The utility model provides a wind generating set's fire control coordinated control device which characterized in that includes: the fire-fighting linkage controller is connected to the main controller, the fire-fighting system, the converter and the box-type transformer of the wind generating set;

the fire-fighting linkage controller responds to a fire-fighting signal received from the fire-fighting system and sends a control signal for indicating disconnection of a safety chain to the main controller; after the control signal is sent, a grid-connected breaker opening control signal is sent to the converter and/or a low-voltage breaker opening control signal is sent to the box-type transformer;

wherein the converter is connected to the grid via the box transformer.

2. The fire control linkage as claimed in claim 1, wherein,

the fire-fighting linkage controller starts timing from sending the control signal for indicating to disconnect the safety chain, and sends the grid-connected breaker opening control signal to the converter when a first preset duration is reached;

and responding to the fact that the grid-connected breaker opening feedback signal is not received within a second preset time period after the grid-connected breaker opening control signal is sent, and sending the low-voltage breaker opening control signal to the box-type transformer by the fire-fighting linkage controller.

3. The fire ganged-control apparatus of claim 1, further comprising: a mode selection piece and an opening and closing control piece connected to the fire-fighting linkage controller;

the fire-fighting linkage controller responds to the mode selection operation of the mode selection piece by a user, and sets a control mode to be an automatic control mode or a manual control mode;

and the fire-fighting linkage controller responds to the opening and closing control operation of a user on the opening and closing control piece under a manual control mode, and sends a low-voltage breaker opening control signal or a low-voltage breaker closing control signal to the box-type transformer.

4. The fire ganged-control apparatus of claim 1, further comprising: the power supply comprises a first power supply source, a power supply monitoring circuit and a power supply switching circuit;

the power supply monitoring circuit is used for monitoring the running state of the first power supply;

when the first power supply is in a normal operation state, the power supply switching circuit controls the first power supply to supply power to the fire-fighting linkage control device; when the first power supply is in an abnormal state, the second power supply of the box-type transformer is controlled to supply power for the fire-fighting linkage control device.

5. A fire ganged control apparatus as claimed in any one of claims 1 to 3, further comprising: a status indicator connected to the fire protection aggregate controller,

wherein, the fire control coordinated controller is according to current state control the state indicator indicates at least one among the following: the fire-fighting linkage control device is in a normal working state, the fire-fighting linkage control device is in a fault state, the low-voltage circuit breaker is in a closing state, the low-voltage circuit breaker is in a brake-separating state, the fire-fighting linkage control device is in an automatic control mode, the fire-fighting linkage control device is in a manual control mode, the grid-connected circuit breaker is in a brake-separating state, and the grid-connected circuit breaker is in a closing state.

6. The fire-fighting linkage control method of the wind generating set is characterized by comprising the following steps of:

responding to the received fire control signal, and controlling the safety chain of the wind generating set to be disconnected;

in response to the disconnection of the safety chain of the wind generating set, controlling the grid-connected circuit breaker of the converter of the wind generating set to open and/or controlling the low-voltage circuit breaker of the box-type transformer to open,

wherein the converter is connected to the grid via the box transformer.

7. The fire fighting coordinated control method according to claim 6, wherein the step of controlling the grid-connected circuit breaker of the converter of the wind power generator set to open and/or controlling the low voltage circuit breaker of the box transformer to open in response to the safety chain of the wind power generator set being disconnected comprises:

the wind generating set is started to complete the wind turbine generator system, and the wind generating set is started to complete the wind turbine generator system;

and controlling the low-voltage circuit breaker to open the gate in response to the grid-connected circuit breaker failing to complete the opening action.

8. The fire interlock control method of claim 6 further comprising:

setting the control mode to an automatic control mode or a manual control mode in response to a mode selection operation by a user;

and in a manual control mode, the switching-on or switching-off of the low-voltage circuit breaker is controlled in response to switching-on or switching-off control operation of a user.

9. The fire control coordinated control system of wind generating set, characterized by comprising:

a safety chain control unit configured to control a safety chain of the wind turbine generator set to be disconnected in response to a received fire signal;

an opening and closing control unit configured to control opening and closing of a grid-connected circuit breaker of a converter of the wind generating set and/or control opening and closing of a low-voltage circuit breaker of a box-type transformer in response to disconnection of a safety chain of the wind generating set,

wherein the converter is connected to the grid via the box transformer.

10. A computer readable storage medium storing a computer program, wherein the computer program, when executed by a processor, causes the processor to perform the fire fighting coordinated control method of a wind turbine according to any one of claims 6 to 8.

11. A fire fighting coordinated control system of a wind generating set, characterized in that the control system comprises:

a processor;

a memory storing a computer program which, when executed by a processor, causes the processor to perform the fire fighting coordinated control method of a wind turbine according to any one of claims 6 to 8.