CN112302864A

CN112302864A - Transformer signal processing device, method and system

Info

Publication number: CN112302864A
Application number: CN201910698886.4A
Authority: CN
Inventors: 史超; 夏静; 张广宇
Original assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Current assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2021-02-02
Anticipated expiration: 2039-07-31
Also published as: CN112302864B

Abstract

The invention provides a transformer signal processing device, method and system, and relates to the field of wind power generation. The transformer signal processing device comprises: the signal receiving interface is used for acquiring a state signal of the transformer; the processing module is used for generating a fan control instruction corresponding to at least one preset wind power control strategy if the state signal meets the at least one preset wind power control strategy, and the fan control instruction is used for indicating and controlling the wind generating set; and the output module is used for sending the generated fan control instruction to a master control system of the wind generating set. By using the technical scheme of the invention, the problem that the transformer state is difficult to identify and analyze in the wind power generation system can be solved, so that the wind generating set can complete a series of control processing related to the state information of the transformer.

Description

Transformer signal processing device, method and system

Technical Field

The invention belongs to the field of wind power generation, and particularly relates to a transformer signal processing device, method and system.

Background

In the field of wind power generation, in a grid system, a transformer is one of very important devices. The monitoring and regulation of information on the transformer is a non-negligible part of the wind power generation process.

At the present stage, the state signal of the transformer is uploaded to the terminal box, and the master control system of the wind generating set reads the state signal from the terminal box corresponding to the transformer, so that the state monitoring of the transformer is realized. However, because the main control system of the wind generating set lacks the ability of identifying the state signal of the transformer, the wind generating set is difficult to identify and analyze the state of the transformer, and a series of control processing related to the state information of the transformer cannot be completed.

Disclosure of Invention

The embodiment of the invention provides a transformer signal processing device, method and system, which can solve the problem that the state of a transformer is difficult to identify and analyze in a wind power generation system, so that a wind generating set can complete a series of control processing related to the state information of the transformer.

In a first aspect, an embodiment of the present invention provides a transformer signal processing apparatus, including: the signal receiving interface is used for acquiring a state signal of the transformer; the processing module is used for generating a fan control instruction corresponding to at least one preset wind power control strategy if the state signal meets the at least one preset wind power control strategy, and the fan control instruction is used for indicating and controlling the wind generating set; and the output module is used for sending the generated fan control instruction to a master control system of the wind generating set.

In some embodiments, the status signals include one or more of a transformer coil temperature signal, a transformer oil temperature signal, an oil level signal, a transformer safety monitoring component action signal, a transformer cooling system fault signal.

In some embodiments, the preset wind power control strategy includes one or more of the following: a control strategy based on the temperature indicated by the status signal; a control strategy according to the temperature indicated by the state signal and the duration of the temperature indicated by the state signal; a control strategy for the oil level as indicated by the status signal; a control strategy for the action of the safety monitoring part of the transformer according to the state signal indication; and controlling the fault according to the state signal.

In some embodiments, the preset wind power control strategies include one or more of a first wind power control strategy to a sixteenth wind power control strategy; the first wind power control strategy comprises that the coil temperature indicated by a transformer coil temperature signal in the state signal is higher than or equal to a first temperature threshold and lower than or equal to a second temperature threshold; the second wind power control strategy comprises that the duration of the coil temperature indicated by the transformer coil temperature signal in the state signal is continuously higher than or equal to the first temperature threshold and lower than or equal to the second temperature threshold is larger than or equal to the first time threshold; the third wind power control strategy comprises that the oil temperature indicated by the transformer oil temperature signal in the state signal is higher than or equal to a third temperature threshold; the fourth wind power control strategy comprises that the duration of the oil temperature indicated by the transformer oil temperature signal in the state signal being continuously higher than or equal to the third temperature threshold value is greater than or equal to the second duration threshold value; the fifth wind control strategy includes that a coil temperature indicated by the transformer coil temperature signal in the status signal is higher than a second temperature threshold; the sixth wind power control strategy comprises that the duration of the coil temperature indicated by the transformer coil temperature signal in the state signal being continuously higher than the second temperature threshold is greater than or equal to a third duration threshold; the seventh wind power control strategy comprises that the oil temperature indicated by the transformer oil temperature signal in the state signal is higher than or equal to a fourth temperature threshold value, and the fourth temperature threshold value is higher than a third temperature threshold value; the eighth wind control strategy comprises that the time length for which the oil temperature indicated by the transformer oil temperature signal in the state signal is continuously higher than or equal to the fourth temperature threshold value is greater than or equal to the fourth time threshold value; the ninth wind power control strategy comprises that the oil level indicated by the oil level signal in the state signal exceeds the range of the normal state threshold value; the tenth wind power control strategy comprises that the action signal of the transformer safety monitoring component in the state signal indicates the action of the safety monitoring component of the transformer; the eleventh wind power control strategy comprises that a fault signal of the transformer cooling system in the state signal indicates that the cooling system of the transformer has a fault; the twelfth wind power control strategy comprises that the coil temperature indicated by the transformer coil temperature signal in the state signal is lower than or equal to a fifth temperature threshold, and the fifth temperature threshold is lower than the first temperature threshold; the thirteenth wind power control strategy comprises that the duration of the coil temperature indicated by the transformer coil temperature signal in the state signal being continuously lower than or equal to the fifth temperature threshold is greater than or equal to the fifth duration threshold; the fourteenth wind power control strategy comprises that the oil temperature indicated by the transformer oil temperature signal in the state signal is lower than or equal to a sixth temperature threshold value, and the sixth temperature threshold value is lower than a third temperature threshold value; the fifteenth wind power control strategy comprises that the duration of the oil temperature indicated by the transformer oil temperature signal in the state signal being continuously lower than or equal to the sixth temperature threshold value is greater than or equal to the sixth duration threshold value; the sixteenth wind power control strategy comprises that at least one signal in the status signals indicates that the component of the transformer is abnormal.

In some embodiments, if the state signal satisfies at least one of the first wind power control strategy to the fourth wind power control strategy, the fan control instruction includes a fan capacity reduction control instruction for instructing to control the wind generating set to perform capacity reduction operation; if the state signal meets at least one of the fifth wind power control strategy to the eleventh wind power control strategy, the fan control instruction comprises a fan stop control instruction which is used for indicating to control the wind generating set to stop running; if the state signal meets at least one of the twelfth wind power control strategy to the fifteenth wind power control strategy, the fan control instruction comprises a fan normal operation instruction which is used for indicating and controlling the wind generating set to normally operate; and if the state signal meets the sixteenth wind power control strategy, the fan control instruction comprises a fan warning instruction and is used for indicating and controlling the wind generating set to send a warning signal.

In some embodiments, at least a portion of the signal receiving interface is multiplexed by different types of transformers; the state signals of the different types of transformers obtained by any one signal receiving interface multiplexed by the different types of transformers are different.

In some embodiments, the transformer signal processing device is disposed on the transformer.

In a second aspect, an embodiment of the present invention provides a transformer signal processing method, including: acquiring a state signal of the transformer; if the state signal meets at least one wind power control strategy in the preset wind power control strategies, generating a fan control instruction corresponding to the at least one wind power control strategy, wherein the fan control instruction is used for instructing and controlling the wind generating set; and sending the generated fan control instruction to a master control system of the wind generating set.

In a third aspect, an embodiment of the present invention provides a transformer signal processing system, including: a transformer; the transformer signal processing apparatus according to the first aspect; and the wind generating set is used for receiving the fan control instruction sent by the transformer signal processing device and executing the operation corresponding to the fan control instruction.

The embodiment of the invention provides a transformer signal processing device, method and system, which are used for acquiring a state signal of a transformer. And determining whether to generate a fan control instruction for indicating to control the wind generating set according to whether the acquired state signal of the transformer meets a preset wind power control strategy. And sending the generated fan control instruction to a main control system of the wind generating set so that the main control system of the wind generating set controls the wind generating set to execute control processing operation. The complex state signals of the transformer are processed, and fan control instructions which meet the self requirements of the wind generating set and can be identified by the wind generating set are output, so that the problem that the state of the transformer is difficult to identify and analyze in a wind generating system is solved, and the wind generating set can complete a series of control processing related to the state information of the transformer.

Drawings

The present invention will be better understood from the following description of specific embodiments thereof taken in conjunction with the accompanying drawings, in which like or similar reference characters designate like or similar features.

Fig. 1 is a schematic structural diagram of a transformer signal processing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a different type of transformer in communication with a transformer signal processing apparatus according to an embodiment of the present invention;

FIG. 3 is a flowchart illustrating a method for processing a transformer signal according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a transformer signal processing system according to an embodiment of the present invention.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific configuration and algorithm set forth below, but rather covers any modification, replacement or improvement of elements, components or algorithms without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present invention.

The embodiment of the invention provides a transformer signal processing device, method and system, which can be applied to monitoring of a state signal of a transformer and a scene of controlling a wind generating set to perform corresponding operation according to the state signal of the transformer. In the embodiment of the invention, the interaction between the transformer and the wind generating set can be realized through the transformer signal processing device, so that the wind generating set can complete a series of control processing related to the state signal of the transformer.

Fig. 1 is a schematic structural diagram of a transformer signal processing apparatus according to an embodiment of the present invention. As shown in fig. 1, the transformer signal processing apparatus 10 includes a signal receiving interface 11, a processing module 12, and an output module 13.

The signal receiving interface 11 is used for acquiring a status signal of the transformer. The status signal is used to characterize the state of the transformer and the state of components in the transformer. The transformer may be a dry type transformer or an oil immersed type transformer, and is not limited herein. In some examples, the status signals may include one or more of a transformer coil temperature signal, a transformer oil temperature signal, an oil level signal, a transformer safety monitoring component action signal, a transformer cooling system fault signal.

The transformer coil temperature signal may be indicative of a temperature of the transformer coil. The transformer oil temperature signal may be indicative of an oil temperature of the transformer. The oil level signal may be indicative of an oil level of the transformer. The transformer safety monitoring component action signal is used for representing the action of the safety monitoring component of the transformer. For example, the safety monitoring components of the transformer may include one or more of an arc sensor, a smoke sensor, a pressure relief valve, a heavy gas protection gate, and the like, without limitation. Correspondingly, the transformer safety monitoring component action signal may include one or more of an arc sensor action signal, a smoke sensor action signal, a pressure relief valve action signal, a heavy gas protection gate action signal, and the like, and is not limited herein.

The number of the signal receiving interfaces 11 may be one or more, and is not limited herein. In this embodiment, a transformer signal processing apparatus including a plurality of signal receiving interfaces 11 is described as an example. It should be noted that the signal receiving interface 11 can identify the status signal of the transformer.

The processing module 12 stores at least one preset wind power control strategy. The processing module 12 is configured to generate a fan control instruction corresponding to at least one preset wind power control strategy if the state signal satisfies the at least one preset wind power control strategy.

The wind power control strategy and the fan control instruction have a corresponding relation. Different fan control strategies may correspond to different fan control instructions. And the fan control instruction is used for indicating and controlling the wind generating set. And if the state signal meets the wind power control strategy, generating a fan control instruction corresponding to the met wind power control strategy.

The processing module 12 may be embodied as a controller, and the type of controller is not limited herein.

The output module 13 is configured to send the generated fan control instruction to a main control system of the wind turbine generator system. And the master control system of the wind generating set receives the fan control instruction and can execute the operation corresponding to the fan control instruction.

In some examples, the processing module 12 may further process the received status signal to obtain status data, and the status data corresponds to the status signal. The output module 13 uploads the status data to a main control system or other control systems of the wind turbine generator system, a storage device, and the like, which is not limited herein.

In the transformer signal processing apparatus according to the embodiment of the present invention, the signal receiving interface 11 may obtain a status signal of the transformer. The processing module 12 may determine whether to generate a fan control instruction for instructing to control the wind turbine generator system according to whether the acquired state signal of the transformer satisfies a preset wind power control policy. And the generated fan control instruction is sent to the main control system of the wind generating set through the output module 13, so that the main control system of the wind generating set controls the wind generating set to execute the control processing operation. The complex state signals of the transformer are processed, and fan control instructions which meet the self requirements of the wind generating set and can be identified by the wind generating set are output, so that the problem that different transformer states are difficult to identify and analyze in a wind generating system is solved, and the wind generating set can complete a series of control processing related to the state information of the transformer. And moreover, the transformer comprises a processing module, so that a modular butt joint mode that different transformers are suitable for different fans is provided, and the control burden is reduced for a master control system of the wind generating set.

The wind power control strategy in the above embodiments may include one or more control strategies. For example, in some examples, the wind power control policy preset in the above embodiments may include one or more of the following:

a control strategy according to the temperature indicated by the status signal, a control strategy according to the temperature indicated by the status signal and the duration of the temperature indicated by the status signal, a control strategy according to the oil level indicated by the status signal, a control strategy according to the action of the safety monitoring part of the transformer indicated by the status signal, and a control strategy according to the fault indicated by the status signal.

That is, the specific control strategy in the wind power control strategies preset in the above embodiments may be set according to one or more of the temperature, the duration of the temperature, the oil level, the action of the safety monitoring component of the transformer, the fault, and the like, and is not limited herein.

For example, the following description will be made with reference to the preset wind power control strategies including one or more of the first wind power control strategy to the sixteenth wind power control strategy. It should be noted that the preset wind power control strategies are not limited to the first wind power control strategy to the sixteenth wind power control strategy, and may also include other wind power control strategies, which are not illustrated herein.

The first wind power control strategy comprises that the coil temperature indicated by the transformer coil temperature signal in the state signal is higher than or equal to a first temperature threshold value and lower than or equal to a second temperature threshold value.

The first temperature threshold is lower than the second temperature threshold. The first temperature threshold is a temperature threshold at which the temperature of the transformer coil is in an abnormal state but does not reach a serious abnormal state. The second temperature threshold is the temperature threshold at which the transformer reaches a severe abnormal state. The first temperature threshold and the second temperature threshold may be set according to a specific work scenario and a work requirement, and are not limited herein. For example, the first temperature threshold is 130 ℃ and the second temperature threshold is 150 ℃. Namely, the first wind power control strategy comprises that the coil temperature indicated by the transformer coil temperature signal in the state signal is higher than or equal to 130 ℃ and lower than or equal to 150 ℃.

The second wind power control strategy comprises that the duration of the coil temperature indicated by the transformer coil temperature signal in the state signal is continuously higher than or equal to the first temperature threshold and lower than or equal to the second temperature threshold is larger than or equal to the first duration threshold.

The second wind power control strategy introduces the factor of the duration of the temperature on the basis of the first wind power control strategy. The first time threshold may be set according to a specific work scenario and a work requirement, and is not limited herein. For example, the first temperature threshold is 130 ℃, the second temperature threshold is 150 ℃, and the first time length threshold is 20 seconds. Namely, the second wind power control strategy comprises that the duration of the coil temperature indicated by the transformer coil temperature signal in the state signal is continuously higher than or equal to 130 ℃ and lower than or equal to 150 ℃ is more than or equal to 20 seconds.

The third wind power control strategy comprises that the oil temperature indicated by the transformer oil temperature signal in the state signal is higher than or equal to a third temperature threshold value.

The third temperature threshold is a temperature threshold at which the oil temperature of the transformer is in an abnormal state but does not reach a serious abnormal state. The third temperature threshold may be set according to a specific working scenario and a working requirement, and is not limited herein. For example, the third temperature threshold is 90 ℃. Namely, the third wind power control strategy comprises that the oil temperature indicated by the transformer oil temperature signal in the state signal is higher than or equal to 90 ℃.

The fourth wind power control strategy comprises that the duration of the oil temperature indicated by the transformer oil temperature signal in the state signal continuously being higher than or equal to the third temperature threshold value is larger than or equal to the second duration threshold value.

And the fourth wind power control strategy introduces the factor of the temperature duration on the basis of the third wind power control strategy. The second duration threshold may be set according to a specific work scenario and a work requirement, and is not limited herein. For example, the third temperature threshold is 90 ℃ and the second duration threshold is 20 seconds. Namely, the fourth wind power control strategy comprises that the duration of the oil temperature indicated by the transformer oil temperature signal in the state signal is more than or equal to 20 seconds and is continuously higher than or equal to 90 ℃.

The fifth thermoelectric control strategy includes a coil temperature indicated by the transformer coil temperature signal in the status signal being above the second temperature threshold.

The content of the second temperature threshold can be referred to the above description, and is not repeated herein. For example, the second temperature threshold is 150 ℃. I.e. the fifth windo control strategy comprises that the coil temperature indicated by the transformer coil temperature signal in the status signal is higher than 150 c.

The sixth wind power control strategy comprises that the duration of the coil temperature indicated by the transformer coil temperature signal in the state signal continuously higher than the second temperature threshold is greater than or equal to a third duration threshold.

The sixth wind power control strategy introduces a factor of the duration of the temperature on the basis of the fifth wind power control strategy. The third duration threshold may be set according to a specific work scenario and a work requirement, and is not limited herein. For example, the second temperature threshold is 150 ℃ and the third time threshold is 10 seconds. Namely, the sixth wind power control strategy comprises that the duration of the coil temperature indicated by the transformer coil temperature signal in the state signal continuously higher than 150 ℃ is more than or equal to 10 seconds.

The seventh wind power control strategy comprises that the oil temperature indicated by the transformer oil temperature signal in the state signal is higher than or equal to the fourth temperature threshold value.

The fourth temperature threshold is a temperature threshold at which the oil temperature of the transformer reaches a severe abnormal state. The fourth temperature threshold is higher than the third temperature threshold. The fourth temperature threshold may be set according to a specific working scenario and a working requirement, and is not limited herein. For example, the fourth temperature threshold is 100 ℃. Namely, the seventh wind power control strategy comprises that the oil temperature indicated by the transformer oil temperature signal in the state signal is higher than or equal to 100 ℃.

The eighth wind control strategy includes that the transformer oil temperature signal in the status signal indicates that the oil temperature continues to be higher than or equal to the fourth temperature threshold for a period of time greater than or equal to the fourth time threshold.

The eighth wind power control strategy introduces a factor of the duration of the temperature on the basis of the seventh wind power control strategy. The fourth time threshold may be set according to a specific work scenario and a work requirement, and is not limited herein. For example, the fourth temperature threshold is 100 ℃ and the fourth time threshold is 10 seconds. That is, the eighth wind control strategy includes that the transformer oil temperature signal in the status signal indicates an oil temperature that lasts for a period of time greater than or equal to 10 seconds and greater than 100 ℃.

The ninth wind power control strategy comprises that the oil level indicated by the oil level signal in the state signal exceeds the normal state threshold range.

The oil level refers to the oil level measured by an oil level gauge in the oil-immersed transformer. The normal state threshold range is a threshold range in which the oil level is in a normal state, and may be set according to a specific working scenario and a working requirement, and is not limited herein. It should be noted that the oil level signal indicating the oil level exceeding the normal state threshold range may also trigger an oil level indicator alarm signal, which may also be used as a state signal.

The tenth wind power control strategy comprises that the action signal of the transformer safety monitoring component in the state signal indicates the action of the safety monitoring component of the transformer.

The action signal of the transformer safety monitoring component and the related content of the transformer safety monitoring component can be referred to the related description in the above embodiments, and are not described herein again.

For example, if the transformer safety monitoring component operation signal comprises an arc sensor operation signal, the tenth wind power control strategy comprises an arc sensor operation signal indicating that the arc sensor is operated. And if the action signal of the transformer safety monitoring component comprises a smoke sensor action signal, the tenth wind power control strategy comprises a smoke sensor action signal indicating that the smoke sensor acts. And if the action signal of the transformer safety monitoring component comprises a pressure release valve action signal, the tenth wind power control strategy comprises a pressure release valve action signal indicating that the pressure release valve acts. If the action signal of the transformer safety monitoring part comprises a heavy gas protection gate action signal, the tenth wind power control strategy comprises that the heavy gas protection gate action signal indicates that the heavy gas protection gate acts.

The eleventh wind power control strategy comprises that the transformer cooling system fault signal in the status signal indicates that the cooling system of the transformer is faulty.

And the twelfth wind power control strategy comprises that the coil temperature indicated by the transformer coil temperature signal in the state signal is lower than or equal to a fifth temperature threshold.

The fifth temperature threshold is lower than the first temperature threshold. The fifth temperature threshold is a temperature threshold of the coil temperature in the normal working state of the transformer, and may be set according to a specific working scenario and a working requirement, which is not limited herein. For example, the fifth temperature threshold is 110 ℃. The twelfth wind power control strategy comprises that the coil temperature indicated by the transformer coil temperature signal in the state signal is lower than or equal to 110 ℃.

And the thirteenth wind power control strategy comprises that the duration of the coil temperature indicated by the transformer coil temperature signal in the state signal continuously lower than or equal to the fifth temperature threshold is greater than or equal to the fifth duration threshold.

The thirteenth wind power control strategy introduces the factor of the duration of the temperature on the basis of the twelfth wind power control strategy. The fifth time period threshold may be set according to a specific work scenario and a work requirement, and is not limited herein. For example, the fifth temperature threshold is 110 ℃ and the fifth time threshold is 30 seconds. Namely, the thirteenth wind power control strategy comprises that the coil temperature indicated by the transformer coil temperature signal in the state signal is continuously lower than or equal to 110 ℃ for more than or equal to 30 seconds.

The fourteenth wind power control strategy includes that the oil temperature indicated by the transformer oil temperature signal in the status signal is less than or equal to the sixth temperature threshold.

The sixth temperature threshold is lower than the third temperature threshold. The sixth temperature threshold is a temperature threshold of the oil temperature of the transformer in the normal working state, and may be set according to a specific working scenario and a working requirement, which is not limited herein. For example, the sixth temperature threshold is 70 ℃. The fourteenth wind power control strategy includes the transformer oil temperature signal in the status signals indicating an oil temperature of less than or equal to 70 ℃.

The fifteenth wind power control strategy comprises that the duration of the oil temperature indicated by the transformer oil temperature signal in the status signal is continuously lower than or equal to the sixth temperature threshold value and is greater than or equal to the sixth duration threshold value.

The fifteenth wind power control strategy introduces a factor of the duration of the temperature on the basis of the fourteenth wind power control strategy. The sixth duration threshold may be set according to a specific work scenario and a work requirement, and is not limited herein. For example, the sixth temperature threshold is 70 ℃ and the sixth time threshold is 30 seconds. Namely, the fifteenth wind power control strategy comprises that the time length of the oil temperature indicated by the transformer oil temperature signal continuously lower than or equal to 70 ℃ is more than or equal to 30 seconds.

The sixteenth wind power control strategy comprises that at least one signal in the status signals indicates that the component of the transformer is abnormal.

The signal in the status signal indicates in some cases that an abnormality has occurred in a component of the transformer. For example, the transformer coil temperature signal in the status signal indicates a coil temperature of-200 deg.C, indicating an anomaly in the transformer coil. As another example, the oil level signal in the status signal indicates that the oil level is too low and an alarm is issued indicating that the oil level gauge is abnormal.

Corresponding to the first wind power control strategy to the sixteenth wind power control strategy in the above embodiments, the fan control instruction may include one or more of a fan capacity reduction instruction, a fan shutdown control instruction, a fan normal operation instruction, and a fan alarm instruction. It should be noted that the fan control instruction is not limited to a fan capacity reduction instruction, a fan shutdown control instruction, a fan normal operation instruction, and a fan alarm instruction, and may also include other types of control instructions, which are not illustrated herein.

Specifically, if the state signal satisfies at least one of the first wind power control strategy to the fourth wind power control strategy, the fan control instruction includes a fan capacity reduction control instruction. And the fan capacity reduction control instruction is used for indicating and controlling the wind generating set to operate in a capacity reduction mode.

And a master control system of the wind generating set receives the fan capacity reduction control instruction and controls the wind generating set to operate in a capacity reduction mode.

And if the state signal meets at least one of the fifth wind power control strategy to the eleventh wind power control strategy, the fan control instruction comprises a fan stop control instruction. And the fan stop control instruction is used for indicating and controlling the wind generating set to stop running.

And a main control system of the wind generating set receives the fan stop control instruction and controls the wind generating set to stop running.

And if the state signal meets at least one of the twelfth wind power control strategy to the fifteenth wind power control strategy, the fan control instruction comprises a fan normal operation instruction. And the normal operation instruction of the fan is used for indicating and controlling the normal operation of the wind generating set. In some examples, if the transformer signal processing device sends a fan capacity reduction control command or a fan stop control command before the current time, the wind generating set is operated in a capacity reduction mode or stopped. At the current moment, the transformer signal processing device sends a normal operation instruction of the fan, the normal operation of the transformer is indicated to be recovered, and correspondingly, the wind generating set can also recover the normal operation.

And a main control system of the wind generating set receives a normal operation instruction of the fan and controls the wind generating set to operate normally.

And if the state signal meets the sixteenth wind power control strategy, the fan control instruction comprises a fan warning instruction. And the fan alarm instruction is used for indicating and controlling the wind generating set to send an alarm signal.

And a master control system of the wind generating set receives the fan alarm instruction and controls the wind generating set to send an alarm signal.

Through the fan control instruction, the wind generating set can respond to the requirement of the operation of the transformer more quickly and effectively, and the operation of the transformer and the reliability of the wind generating set system are enhanced.

In the embodiment of the invention, the applicability of the transformer signal processing device is improved. At least part of the signal receiving interface of the transformer signal processing device can be multiplexed by different types of transformers. The state information of the transformers of different types obtained by any one signal receiving interface multiplexed by the transformers of different types is different.

For convenience of explanation, the following description will be given taking an example in which the transformer signal processing apparatus is applicable to a dry type transformer and an oil-immersed type transformer. Fig. 2 is a schematic diagram of a different type of transformer in communication with a transformer signal processing apparatus according to an embodiment of the present invention. As shown in fig. 2, the solid line indicates communication between the dry-type transformer 20 and the transformer signal processing device 10, and the dotted line indicates communication between the oil-filled transformer 30 and the transformer signal processing device 10. Although both the dry type transformer 20 and the oil type transformer 30 are present in fig. 2, the dry type transformer 20 and the oil type transformer 30 do not communicate with the transformer signal processing device 10 at the same time. The communication line (i.e., solid line) between the dry-type transformer 20 and the transformer signal processing device 10 overlaps the communication line (i.e., dotted line) between the oil-immersed transformer 30 and the transformer signal processing device 10, and this signal receiving interface of the transformer signal processing device 10 is multiplexed between the dry-type transformer 20 and the oil-immersed transformer 30.

The communication line may be a wired communication line or a wireless communication line, and is not limited thereto.

As shown in fig. 2, for convenience of illustration, the transformer signal processing apparatus 10 includes nine signal receiving interfaces, which are respectively labeled as 111 to 119.

The communication lines of the dry-type transformer 20 and the transformer signal processing device 10 include communication lines labeled 21 through 29. Wherein the status signals transmitted by the communication lines labeled 21 to 26 are temperature dependent; the status signal transmitted by the communication line, referenced 27, is associated with a fault in the transformer cooling system; the status signal transmitted by the communication line, referenced 28, is related to the action of the smoke sensor; the status signal transmitted by the communication line labeled 29 is related to the action of the arc sensor. The dry-type transformer 20 communicates with the signal receiving interfaces 111 to 119 of the transformer signal processing apparatus 10 through communication lines labeled 21 to 29, respectively.

The communication lines between the oil filled transformer 30 and the transformer signal processing device 10 include communication lines labeled 31 through 35. Wherein the status signals transmitted by the communication lines labeled 31 and 32 are related to the oil temperature; the status signal transmitted by the communication line, referenced 33, is related to the oil level; the status signal transmitted by the communication line, designated 34, is associated with the heavy gas protection gate; a status signal transmitted by a communication line, indicated at 35, is associated with the pressure relief valve. Oil filled transformer 30 communicates with

signal receiving interfaces

115, 116, 117, 118 and 119 of transformer signal processing apparatus 10 via communication lines labeled 31 through 35, respectively.

That is, the dry-type transformer 20 and the oil-filled transformer 30 multiplex the

signal receiving interfaces

115, 116, 117, 118, and 119 of the transformer signal processing apparatus 10. Any one of the

signal receiving interfaces

115, 116, 117, 118, and 119 is different for the state signals received by the dry-type transformer 20 and the oil-type transformer 30. For example, the state signal of dry-type transformer 20 received by signal receiving interface 117 indicates a fault of the transformer cooling system, and the state signal of oil-filled transformer 30 received by signal receiving interface 117 indicates the oil level.

Multiplexing the signal receiving interfaces of the transformer signal processing apparatus 10 can reduce the number of signal receiving interfaces of the transformer signal processing apparatus 10, thereby realizing a minimized design of the signal receiving interfaces.

In some examples, the transformer signal processing apparatus 10 in the above embodiments may be disposed on a transformer, for example, the transformer signal processing apparatus 10 may be disposed integrally with the transformer.

In other examples, the transformer signal processing apparatus in the above embodiments may also be disposed at other positions, and is not limited herein.

Fig. 3 is a flowchart of a transformer signal processing method according to an embodiment of the invention. The transformer signal processing method is applied to the transformer signal processing device in the above embodiment. As shown in fig. 3, the transformer signal processing method may include steps S401 to S403.

In step S401, a status signal of the transformer is acquired.

In step S402, if the state signal satisfies at least one wind power control strategy of the preset wind power control strategies, a fan control instruction corresponding to the at least one wind power control strategy is generated.

And the fan control instruction is used for indicating and controlling the wind generating set.

In step S403, the generated fan control command is sent to a main control system of the wind turbine generator set.

In the embodiment of the invention, the state signal of the transformer is acquired. And determining whether to generate a fan control instruction for indicating to control the wind generating set according to whether the acquired state signal of the transformer meets a preset wind power control strategy. And sending the generated fan control instruction to a main control system of the wind generating set so that the main control system of the wind generating set controls the wind generating set to execute control processing operation. The complex state signals of the transformer are processed, and fan control instructions which meet the self requirements of the wind generating set and can be identified by the wind generating set are output, so that the problem that different transformer states are difficult to identify and analyze in a wind generating system is solved, and the wind generating set can complete a series of control processing related to the state information of the transformer. And moreover, the transformer comprises a processing module, so that a modular butt joint mode that different transformers are suitable for different fans is provided, and the control burden is reduced for a master control system of the wind generating set. .

In some examples, the status signals in the above embodiments may include, but are not limited to, one or more of a transformer coil temperature signal, a transformer oil temperature signal, an oil level signal, a transformer safety monitoring component action signal, a transformer cooling system fault signal.

The wind power control strategy preset in the above embodiment may include, but is not limited to, one or more of the following: a control strategy according to the temperature indicated by the status signal, a control strategy according to the temperature indicated by the status signal and the duration of the temperature indicated by the status signal, a control strategy according to the oil level indicated by the status signal, a control strategy according to the action of the safety monitoring part of the transformer indicated by the status signal, and a control strategy according to the fault indicated by the status signal.

For example, the preset wind power control strategies in the above embodiments include one or more of a first wind power control strategy to a sixteenth wind power control strategy.

The first wind power control strategy comprises that the coil temperature indicated by the transformer coil temperature signal in the state signal is higher than or equal to a first temperature threshold and lower than or equal to a second temperature threshold.

The seventh wind power control strategy comprises that the oil temperature indicated by the transformer oil temperature signal in the state signal is higher than or equal to a fourth temperature threshold value, and the fourth temperature threshold value is higher than the third temperature threshold value.

The twelfth wind power control strategy comprises that the coil temperature indicated by the transformer coil temperature signal in the state signal is lower than or equal to a fifth temperature threshold, and the fifth temperature threshold is lower than the first temperature threshold.

The fourteenth wind power control strategy comprises that the oil temperature indicated by the transformer oil temperature signal in the state signal is lower than or equal to a sixth temperature threshold value, and the sixth temperature threshold value is lower than a third temperature threshold value.

Correspondingly, if the state signal meets at least one of the first wind power control strategy to the fourth wind power control strategy, the fan control instruction comprises a fan capacity reduction control instruction. And the fan capacity reduction control instruction is used for indicating and controlling the wind generating set to operate in a capacity reduction mode.

And if the state signal meets at least one of the fifth wind power control strategy to the eleventh wind power control strategy, the fan control instruction comprises a fan stop control instruction. The fan stop control instruction is used for indicating and controlling the wind generating set to stop running;

and if the state signal meets at least one of the twelfth wind power control strategy to the fifteenth wind power control strategy, the fan control instruction comprises a fan normal operation instruction. And the normal operation instruction of the fan is used for indicating and controlling the normal operation of the wind generating set.

Fig. 4 is a schematic structural diagram of a transformer signal processing system according to an embodiment of the present invention. As shown in fig. 4, the transformer signal processing system may include a transformer 50, the transformer signal processing apparatus 10 in the above embodiment, and a wind turbine generator set 60.

The wind turbine generator set 60 is configured to receive a fan control instruction sent by the transformer signal processing device 10, and execute an operation corresponding to the fan control instruction. Specifically, the main control system of the wind turbine generator system 60 receives the fan control instruction sent by the transformer signal processing device 10, and executes an operation corresponding to the fan control instruction.

The transformer signal processing device may be integrated on the transformer, and is not limited herein.

It should be clear that the embodiments in this specification are described in a progressive manner, and the same or similar parts in the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. For method embodiments and system embodiments, reference may be made to the description of the apparatus embodiments for relevant points. The present invention is not limited to the specific steps and structures described above and shown in the drawings. Those skilled in the art may make various changes, modifications and additions or change the order between the steps after appreciating the spirit of the invention. Also, a detailed description of known process techniques is omitted herein for the sake of brevity.

The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments can be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transport medium or communication link. A "machine-readable medium" may include any medium that can store or transport information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.

It will be appreciated by persons skilled in the art that the above embodiments are illustrative and not restrictive. Different features which are present in different embodiments may be combined to advantage. Other variations to the disclosed embodiments can be understood and effected by those skilled in the art upon studying the drawings, the specification, and the claims. In the claims, the term "comprising" does not exclude other means or steps; the indefinite article "a" does not exclude a plurality; the terms "first" and "second" are used to denote a name and not to denote any particular order. Any reference signs in the claims shall not be construed as limiting the scope. The functions of the various parts appearing in the claims may be implemented by a single hardware or software module. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Claims

1. A transformer signal processing apparatus, comprising:

the signal receiving interface is used for acquiring a state signal of the transformer;

the processing module is used for generating a fan control instruction corresponding to at least one preset wind power control strategy if the state signal meets the at least one preset wind power control strategy, and the fan control instruction is used for indicating to control the wind generating set;

and the output module is used for sending the generated fan control instruction to a master control system of the wind generating set.

2. The apparatus of claim 1, wherein the status signals comprise one or more of a transformer coil temperature signal, a transformer oil temperature signal, an oil level signal, a transformer safety monitoring component action signal, a transformer cooling system fault signal.

3. The apparatus of claim 2, wherein the preset wind power control strategy comprises one or more of:

a control strategy according to the temperature indicated by the status signal;

a control strategy according to the temperature indicated by the state signal and the duration of the temperature indicated by the state signal;

a control strategy for the oil level as indicated by the status signal;

the control strategy of the action of the safety monitoring part of the transformer according to the state signal indication;

and controlling the fault according to the state signal.

4. The device according to any one of claims 1 to 3, wherein the preset wind power control strategy comprises one or more of a first wind power control strategy to a sixteenth wind power control strategy;

the first wind power control strategy comprises that the coil temperature indicated by the transformer coil temperature signal in the state signal is higher than or equal to a first temperature threshold and lower than or equal to a second temperature threshold;

the second wind power control strategy comprises that the duration of the coil temperature indicated by the transformer coil temperature signal in the state signal is continuously higher than or equal to the first temperature threshold and lower than or equal to the second temperature threshold is larger than or equal to a first duration threshold;

the third wind power control strategy comprises that the oil temperature indicated by the transformer oil temperature signal in the state signal is higher than or equal to a third temperature threshold value;

the fourth wind power control strategy comprises that the duration of the oil temperature indicated by the transformer oil temperature signal in the state signal being continuously higher than or equal to a third temperature threshold value is greater than or equal to a second duration threshold value;

the fifth wind control strategy comprises that a coil temperature indicated by a transformer coil temperature signal in the status signal is higher than the second temperature threshold;

the sixth wind power control strategy comprises that the duration of the coil temperature indicated by the transformer coil temperature signal in the state signal being continuously higher than the second temperature threshold is greater than or equal to a third duration threshold;

the seventh wind power control strategy comprises that the oil temperature indicated by the transformer oil temperature signal in the state signal is higher than or equal to a fourth temperature threshold value, and the fourth temperature threshold value is higher than the third temperature threshold value;

the eighth wind control strategy comprises that the duration of the oil temperature indicated by the transformer oil temperature signal in the state signal continuously being higher than or equal to a fourth temperature threshold value is greater than or equal to a fourth time threshold value;

the ninth wind power control strategy comprises that the oil level indicated by the oil level signal in the state signal exceeds a normal state threshold range;

the tenth wind power control strategy comprises that a transformer safety monitoring component action signal in the state signal indicates that a safety monitoring component of the transformer takes action;

the eleventh wind power control strategy comprises that a transformer cooling system fault signal in the status signal indicates that a cooling system of the transformer is in fault;

the twelfth wind power control strategy comprises that the coil temperature indicated by the transformer coil temperature signal in the state signal is lower than or equal to a fifth temperature threshold, and the fifth temperature threshold is lower than the first temperature threshold;

the thirteenth wind power control strategy comprises that the duration of the coil temperature indicated by the transformer coil temperature signal in the state signal being continuously lower than or equal to the fifth temperature threshold is greater than or equal to a fifth duration threshold;

the fourteenth wind power control strategy comprises that the oil temperature indicated by the transformer oil temperature signal in the state signal is lower than or equal to a sixth temperature threshold value, and the sixth temperature threshold value is lower than the third temperature threshold value;

the fifteenth wind power control strategy comprises that the duration of the oil temperature indicated by the transformer oil temperature signal in the state signal being continuously lower than or equal to a sixth temperature threshold value is greater than or equal to a sixth duration threshold value;

the sixteenth wind power control strategy comprises that at least one signal in the state signals indicates that the component of the transformer is abnormal.

5. The apparatus of claim 4,

if the state signal meets at least one of the first wind power control strategy to the fourth wind power control strategy, the fan control instruction comprises a fan capacity reduction control instruction which is used for indicating and controlling a wind generating set to perform capacity reduction operation;

if the state signal meets at least one of the fifth wind power control strategy to the eleventh wind power control strategy, the fan control instruction comprises a fan stop control instruction for instructing to control the wind generating set to stop running;

if the state signal meets at least one of the twelfth wind power control strategy to the fifteenth wind power control strategy, the fan control instruction comprises a fan normal operation instruction which is used for indicating and controlling a wind generating set to normally operate;

and if the state signal meets a sixteenth wind power control strategy, the fan control instruction comprises a fan warning instruction for instructing and controlling the wind generating set to send a warning signal.

6. The apparatus of claim 1,

at least part of the signal receiving interfaces are multiplexed by different types of transformers;

the state signals of the different types of transformers obtained by any one of the signal receiving interfaces multiplexed by the different types of transformers are different.

7. The apparatus of claim 1, wherein the apparatus is disposed on the transformer.

8. A method for processing a signal of a transformer, comprising:

acquiring a state signal of the transformer;

if the state signal meets at least one wind power control strategy in preset wind power control strategies, generating a fan control instruction corresponding to the at least one wind power control strategy, wherein the fan control instruction is used for instructing and controlling a wind generating set;

and sending the generated fan control instruction to a master control system of the wind generating set.

9. The method of claim 8, wherein the status signals include one or more of a transformer coil temperature signal, a transformer oil temperature signal, an oil level signal, a transformer safety monitoring component action signal, a transformer cooling system fault signal.

10. The method of claim 9, wherein the preset wind power control strategy comprises one or more of:

a control strategy according to the temperature indicated by the status signal;

a control strategy for the oil level as indicated by the status signal;

and controlling the fault according to the state signal.

11. The method according to any one of claims 8 to 10, wherein the preset wind power control strategy comprises one or more of a first wind power control strategy to a sixteenth wind power control strategy;

12. The method of claim 11,

13. A transformer signal processing system, comprising:

a transformer;

the transformer signal processing device according to any one of claims 1 to 7;

and the wind generating set is used for receiving the fan control instruction sent by the transformer signal processing device and executing the operation corresponding to the fan control instruction.