CN216381729U - Wind generating set and wind power plant - Google Patents
Wind generating set and wind power plant Download PDFInfo
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- CN216381729U CN216381729U CN202123419231.0U CN202123419231U CN216381729U CN 216381729 U CN216381729 U CN 216381729U CN 202123419231 U CN202123419231 U CN 202123419231U CN 216381729 U CN216381729 U CN 216381729U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The embodiment of the application discloses a wind generating set and a wind power plant. Wind generating set includes generator, converter, a plurality of spacer rings, multiphase transmission cable and many detection lines, wherein: each phase transmission cable in the multi-phase transmission cable comprises a plurality of power transmission lines, and each power transmission line is mutually fixed with one detection line in the plurality of detection lines; each phase of the transmission cable comprises a plurality of power transmission lines secured by a first set of the plurality of spacers, the first set of spacers comprising at least one of the plurality of spacers; the detection lines are not in contact with the spacer rings; two ends of each power transmission line and each detection line are respectively connected with a generator and a converter; each detection line is used for transmitting a detection signal for improving the safety of the wind generating set.
Description
Technical Field
The application relates to the technical field of wind power generation, in particular to a wind generating set and a wind power plant.
Background
With the development of the wind power generation technology, the height of a tower barrel of a wind power generator unit is higher and higher, so that a power transmission line between a generator at the top end of the tower barrel and a converter at the bottom end of the tower barrel is longer and longer. In the process of operation of the wind generating set, the power transmission line is driven to shake along with rotation of a machine head of the wind generating set, so that the power transmission line and the spacer ring used for binding and fixing the power transmission line shake, the spacer ring can be loosened due to long-time shaking, the power transmission line and the spacer ring rub against each other, and the power transmission line is abraded. Prolonged wear may lead to breakage of the power transmission line.
Power transmission lines are commonly used for transmitting multi-phase ac power, such as three-phase ac power, and currently, the method for detecting whether the power transmission line has a fault is as follows: and collecting the current in each power transmission line, and determining that the power transmission line of a certain phase is in fault when the detection result is that the phase of the multi-phase alternating current is lacked.
However, for each of the multiple phases, 3 power transmission lines are typically utilized for transmission. When one or two of the three power transmission lines of a certain phase are broken, the phase failure phenomenon can not occur, so that the fault can not be determined in time in the manner, and the safety of the wind generating set is low.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application provides a wind turbine generator system and a wind farm, so as to improve the safety of the wind turbine generator system.
In a first aspect, the present application provides a wind generating set comprising a generator, a converter, a plurality of spacer rings, a multi-phase transmission cable and a plurality of detection lines, wherein:
each phase transmission cable in the multi-phase transmission cable comprises a plurality of power transmission lines, and each power transmission line is fixed with one detection line in the plurality of detection lines;
a plurality of power transmission lines comprised by said each phase transmission cable secured by a first set of said plurality of spacing rings, said first set of spacing rings comprising at least one of said plurality of spacing rings;
the plurality of detection lines are not in contact with the plurality of spacer rings;
two ends of each power transmission line and each detection line are respectively connected with the generator and the converter;
each detection line is used for transmitting a detection signal.
In a possible implementation, the wind power plant further comprises a plurality of fixing devices;
each power transmission line and one corresponding detection line are fixed with each other through part of the fixing devices;
some of the plurality of fixing devices are arranged at preset intervals.
In a possible implementation manner, each detection line is attached to the surface of the corresponding power transmission line.
In one possible implementation, each of the multi-phase transmission cables comprises three power transmission lines;
each power transmission line of the three power transmission lines is in contact with the remaining two power transmission lines of the three power transmission lines to form a first gap;
the detection lines corresponding to the three power transmission lines are located in the first gap.
In a possible implementation manner, each detection line is buried inside the corresponding power transmission line.
In one possible implementation, the wind turbine generator system further includes: the device comprises a connecting line, a first controller and a second controller;
the first controller is positioned on the converter side, the second controller is positioned on the generator side, and the first controller is connected with the second controller through the connecting line;
a first end of each detection line is connected with the first controller, and a second end of each detection line is connected with the second controller;
the first controller is used for sending a detection signal to each detection line;
the second controller is used for detecting detection signals in each detection line and sending detection results to the first controller through the connecting lines.
In one possible implementation, the connection line is an optical fiber or a DP line.
In one possible implementation, the detection signal is a digital quantity signal.
In one possible implementation, the wind turbine generator system further includes: a DC power supply, a third controller and a relay;
the direct current power supply is positioned on the generator side;
the relay is positioned on the converter side;
the first end of each detection line is connected with the direct-current power supply, and the second end of each detection line is connected with the coil of the relay;
the contact point signal of the relay is connected with the third controller;
and the relay is used for attracting the contact when the corresponding detection line is communicated and disconnecting the contact when the corresponding detection line is disconnected.
In a second aspect, the present application provides a wind farm comprising a plurality of wind generating sets as defined in any one of the above.
Drawings
FIG. 1 is a schematic structural diagram of a wind turbine generator system provided by an embodiment of the present application;
fig. 2 is a schematic structural diagram of a cross section of each phase transmission cable in the multi-phase transmission cable provided by the embodiment of the present application;
FIG. 3 is a schematic structural diagram of a wind turbine generator system according to another embodiment of the present application;
FIG. 4 is a schematic structural diagram of a wind turbine generator system according to another embodiment of the present application;
fig. 5 is a schematic structural view of a cross section of each phase transmission cable in the multi-phase transmission cable according to another embodiment of the present application;
fig. 6 is a schematic structural diagram of a wind farm according to another embodiment of the present application.
Detailed Description
Power transmission lines are commonly used for transmitting multi-phase ac power, such as three-phase ac power, and currently, the method for detecting whether the power transmission line has a fault is as follows: and collecting the current in each power transmission line, and determining that the power transmission line of a certain phase is in fault when the detection result is that the phase of the multi-phase alternating current is lacked. However, for each of the multiple phases, 3 power transmission lines are typically utilized for transmission. When one or two of the three power transmission lines of a certain phase are broken, the phase failure phenomenon can not occur, so that the fault can not be determined in time in the manner, and the safety of the wind generating set is low.
Based on this, in an embodiment of the present application provided by the applicant, a wind power plant comprises a generator, a converter, a plurality of spacer rings, a multi-phase transmission cable and a plurality of detection wires. The plurality of power transmission lines of each phase of transmission cable are fixed by at least one spacer ring; a plurality of power transmission lines of each phase of transmission cable are respectively fixed with one detection line, and the detection lines are not contacted with a plurality of spacing rings; two ends of each power transmission line and each detection line are respectively connected with the generator and the converter; each detection line is used for transmitting a detection signal.
When the spacing ring is not loosened, the power transmission lines cannot move relatively due to the fixing action of the spacing ring, and the power transmission lines and the spacing ring cannot move relatively; in addition, each power transmission line and one detection line are fixed with each other, and relative movement cannot occur between each detection line and the spacer ring. Therefore, when the spacing ring is not loosened, abrasion cannot be generated between the detection line and the power transmission line and between the detection line and the spacing ring. Because each power transmission line is fixed with one detection line, when the power transmission line is broken, the corresponding detection line is broken. Whether the corresponding detection line is broken or not can be determined according to the detection signals in the detection lines, and therefore, when the detection line is determined to be broken, the power transmission line corresponding to the detection line can be determined to be broken.
By adopting the scheme of the embodiment of the application, the broken power transmission line can be specifically positioned according to whether the detection signal of the detection line changes or not, and the fault of the wind generating set is determined in time, so that the safety of the wind generating set is improved.
Compared with the prior art that the fault of the fan can be determined only when one phase of multiple phases is in phase failure, the scheme of the embodiment is adopted, the situation that the fault cannot be determined after one or two power transmission cables in one phase are broken is reduced, and the potential safety hazards such as discharge and ignition caused by long-term operation of the fan under the condition that the power transmission cables are broken are reduced.
In order to facilitate understanding of the technical solutions provided by the embodiments of the present application, a wind turbine generator system and a wind farm provided by the embodiments of the present application are described below with reference to the accompanying drawings.
While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Other embodiments, which can be derived by those skilled in the art from the embodiments given herein without any inventive contribution, are also within the scope of the present application.
In the claims and specification of the present application and in the drawings accompanying the description, the terms "comprise" and "have" and any variations thereof, are intended to cover non-exclusive inclusions.
The application provides a wind generating set.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a wind turbine generator system according to an embodiment of the present disclosure.
As shown in fig. 1, a wind turbine generator system 100 in the embodiment of the present application includes a generator 101, a converter 102, a plurality of spacer rings, a multi-phase transmission cable, and a plurality of detection lines.
Each of the multi-phase transmission cables includes a plurality of power transmission lines, the plurality of power transmission lines included in each of the multi-phase transmission cables being secured by a first set of the plurality of spacer rings, the first set of spacer rings including at least one of the plurality of spacer rings.
The number of the spacer rings for fastening the plurality of power transmission lines in each phase of the transmission cable may be one or more. It is understood that the number of the spacer rings for fastening the plurality of power transmission lines in each phase of the transmission cable does not affect the implementation of the embodiments of the present application.
In this embodiment, a multi-phase transmission cable is taken as a three-phase transmission cable, and each phase of transmission cable includes three power transmission lines, which will be described with reference to the accompanying drawings.
The three-phase transmission cables are a first transmission cable L1, a second transmission cable L2 and a third transmission cable L3, respectively.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a cross section of each phase transmission cable in the multi-phase transmission cable according to the embodiment of the present application.
As shown in fig. 2, taking the first transmission cable L1 as an example, the first transmission cable L1 includes three power transmission lines, namely, a first power transmission line P1, a second power transmission line P2, and a third power transmission line P3.
A spacer ring for fixing three power transmission lines of the first transmission line cable L1 is taken as an example.
As shown in fig. 2, the grommet G serves to fix three power transmission lines of the first transmission line cable L1.
It is understood that the number of multi-phase transmission cables and the number of power transmission lines included in each phase transmission cable may be other than three. The number of multi-phase transmission cables and the number of power transmission lines included in each phase transmission cable do not affect the implementation of the embodiments of the present application.
The function of the spacer ring is to fasten the power transmission lines in each phase of transmission cable, so that under normal conditions, that is, under the condition that the spacer ring is not loosened, abrasion caused by relative movement between the power transmission lines in each phase of transmission cable is avoided, and abrasion caused by relative movement between the power transmission lines in each phase of transmission cable and the spacer ring is also avoided.
Each power transmission line is fixed with one detection line of the detection lines.
As shown in fig. 2, the first power transmission line P1 and the first sensing line T1 are fixed to each other, the second power transmission line P2 and the second sensing line T2 are fixed to each other, and the third power transmission line P3 and the third sensing line T3 are fixed to each other.
The fixing manner between the power transmission line and the detection line is not limited in this embodiment.
Under normal conditions, because the power transmission line and the detection line are fixed to each other, relative motion between the power transmission line and the detection line cannot occur.
The plurality of detection lines are not in contact with the plurality of spacing rings, so that abrasion cannot occur between the detection lines and the spacing rings.
And two ends of each power transmission line and each detection line are respectively connected with a generator and a converter.
Each detection line is used for transmitting a detection signal.
Whether the detection line is broken or not can be determined according to the detection signal of the detection line.
When one detection line is broken, the detection signal of the detection line is abnormal; when one detection line is normal, the detection signal of the detection line is normal.
Under normal conditions (the condition that the spacing ring is not loosened), due to the fastening effect of the spacing ring, no abrasion is generated among the three power transmission lines in each phase of transmission cable; because the three power transmission lines are respectively fixed with the corresponding detection lines, no abrasion is generated between each detection line and the corresponding power transmission line, and no abrasion is generated between the detection line and other power transmission lines; because every testing wire does not contact with the spacer ring, wear also can not produce between every testing wire and the spacer ring.
Therefore, under normal conditions, no abrasion occurs in each detection line, and the detection signal of the detection line is normal.
After the spacer ring for fastening the three power transmission lines is loosened, relative movement may occur between the three power transmission lines, and relative movement may also occur between the three power transmission lines and the spacer ring, so that the three power transmission lines may be broken.
After a certain power transmission line is broken, because the power transmission line and the detection line are fixed to each other, the detection line fixed to the power transmission line is broken under the action of gravity of the power transmission line.
As shown in fig. 2, after the first power transmission line L1 is broken, the first power transmission line L1 is divided into two parts, i.e., a part close to the generator and a part close to the inverter. Since the first power transmission line L1 and the first detection line T1 are fixed to each other, after the first power transmission line L1 is broken, a portion of the first power transmission line L close to the current transformer generates a pulling force on the first detection line T1 under the action of gravity, so that the first detection line T1 is broken after the first power transmission line L1 is broken. Therefore, by determining whether the first detection line T1 is broken, it can be determined whether the first power transmission line P1 fixed to each other with the first detection line T1 is broken.
The detection signal is transmitted in the detection line, and the detection signal in the detection line changes after the detection line is broken.
The detection lines and the power transmission lines are in one-to-one correspondence, so that whether one detection line is broken or not can be determined by determining whether a detection signal in one detection line is abnormal or not, and therefore whether the power transmission line fixed with the one detection line is broken or not can be determined.
In the above embodiment, the first transmission cable L1 is taken as an example, and for other transmission cables, the working principle is the same as that of the first transmission cable L1, and details are not described here.
In summary, according to the scheme of the embodiment of the application, whether the detection signal of the detection line is abnormal or not can be specifically positioned on the broken power transmission line, and the fault of the wind generating set can be determined in time, so that the safety of the wind generating set is improved.
Since the break of the power transmission line is caused by the loosening of the spacer ring, the solution of the present embodiment is also used to determine whether the spacer ring is loosened. When the detection line is determined to be broken, indicating that the spacing ring for fixing the power transmission line corresponding to the detection line is loosened; and when the detection line is determined to be normal, indicating that the spacer ring for fixing the power transmission line corresponding to the detection line is normal.
The application also provides another wind generating set.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a wind turbine generator system according to another embodiment of the present application.
As shown in fig. 3, the wind turbine generator system 100 in the embodiment of the present application includes a generator 101, a converter 102, a plurality of spacer rings, a multi-phase transmission cable, and a plurality of detection lines.
In this embodiment, a multi-phase transmission cable is taken as a three-phase transmission cable, each phase transmission cable includes three power transmission lines, and the number of the spacer rings for fastening the plurality of power transmission lines in each phase transmission cable is one, which is described with reference to the accompanying drawings.
The three-phase transmission cables are a first transmission cable L1, a second transmission cable L2 and a third transmission cable L3, respectively.
In order to fix each power transmission line with a corresponding detection line, the wind turbine generator system 100 further includes a plurality of fixing devices.
Each power transmission line and one corresponding detection line are mutually fixed through part of fixing devices in the plurality of fixing devices, and the part of fixing devices are distributed at preset intervals.
That is, the partial fixing devices are uniformly distributed on the power transmission line/detection line, and the intervals between the partial fixing devices are preset intervals.
A plurality of fixing device are used for every power transmission line and a detection line that corresponds to set up with presetting interval distribution, can increase every power transmission line and the fixed stability between the detection line that corresponds.
In a possible implementation manner, the wind turbine generator system 100 may further not include a plurality of fixing devices, but directly attach each detection line to the surface of the corresponding power transmission line, so as to fix each power transmission line and the corresponding detection line.
Each detection line is directly attached to the surface of the corresponding power transmission line, so that the hardware cost required by fixing the detection lines and the power transmission lines can be reduced.
Take the first transmission cable L1 in fig. 3 as an example. Referring to fig. 2, as shown in fig. 2, the first transmission cable L1 includes three power transmission lines, which are a first power transmission line P1, a second power transmission line P2 and a third power transmission line P3.
The grommet G is used to fix three power transmission cables of the first transmission cables L1.
Each power transmission line of the three power transmission lines is in contact with the other two power transmission lines of the three power transmission lines to form a gap.
As shown in fig. 2, the first power transmission line P1, the second power transmission line P2, and the third power transmission line P3 are distributed like a Chinese character pin, and a gap is formed among the three power transmission lines.
The first power transmission line P1 and the first sensing line T1 are fixed to each other, the second power transmission line P2 and the second sensing line T2 are fixed to each other, and the third power transmission line P3 and the third sensing line T3 are fixed to each other.
The first detection line T1, the second detection line T2, and the third detection line T3 are located in the gap.
The three detection lines are wrapped by the three power transmission lines and cannot be abraded with the spacer ring.
At this time, the manner of fixing each power transmission line and the corresponding detection line may be any one of the above manners, that is, the power transmission line and the detection line may be fixed by the fixing device, and the detection line may also be attached to the surface of the corresponding power transmission line.
When the detection lines are fixed with the power transmission lines by being attached to the surfaces of the corresponding power transmission lines, the three detection lines can be wrapped, extruded and fixed by the three power transmission lines under the condition that the spacer ring G is normal (not loosened); when the spacer G is loosened, the detection wire is pressed less and shaken, and the detection wire may be worn with the power transmission wire or the spacer G.
As shown in fig. 3, the wind turbine generator system 100 further includes a connection line 103, a first controller 104, and a second controller 105.
The first controller 104 is located on the converter 102 side, the second controller 105 is located on the generator 101 side, and the first controller 104 and the second controller 105 are connected by a connection line.
The connection lines are used to enable communication between the first controller 104 and the second controller 105.
In one possible implementation, the connection line may be an optical fiber or a dp (displayport) line.
The DisplayPort abbreviation DP, is a digital video interface standard developed by the PC and chip manufacturers alliance, standardized by the Video Electronics Standards Association (VESA).
When the connection line is an optical fiber, in order to transmit signals, photoelectric converters may be provided on the generator side and the converter side, respectively.
Two ends of each detection line are respectively connected with a first controller 104 and a second controller 105.
The connection between the detection lines and the first and second controllers 104 and 105 is not shown in fig. 3.
In this embodiment, the first controller 104 is located at one side of the current transformer 102, and is configured to send a detection signal to each detection line; the second controller 105 is located at one side of the generator 101, and is configured to detect a detection signal in each detection line and send a detection result to the first controller 104 through a connection line.
Taking the first detection line T1 as an example, the first controller 104 on the converter 102 side transmits a detection signal to the first detection line T1, and the second controller 105 on the generator 101 side detects the detection signal in the first detection line T1 and transmits the detection result to the first controller 104 through a connection line.
In some possible cases, the detection signal in the detection line is a digital quantity signal.
Further, the digital quantity signal in the detection line can be received by the digital quantity module EL1859 on the generator 101 side; the second controller 105 detects the digital quantity signal in the detection line and sends the detection result to the first controller 104 through the connection line.
Further, the detection result may be received by the digital module EL1859 on the current transformer 102 side.
According to the description in the above embodiment, by detecting the detection signal in the detection line, it is possible to determine whether or not a certain one of the power transmission lines in a certain phase transmission cable is broken.
Hereinafter, a description will be given of how to judge whether the power transmission line is broken or not based on the detection signal in the detection line, taking the example of determining whether the power first power transmission line L1 is broken or not based on the detection signal in the first detection line T1.
The first power transmission line L1 and the first sensing line T1 are fixed.
The first controller 104 sends a detection signal to the first detection line T1, and in a normal condition (when the spacer ring is not loosened), because the two ends of the first detection line T1 are respectively connected with the first controller 104 and the second controller 105, the second controller 105 detects the detection signal in the first detection line T1 to obtain a detection result, and sends the detection result to the first controller 104 through a connection line.
The first controller 104 compares the detection signal transmitted to the first detection line T1 with the detection result transmitted by the second controller 105 to obtain a comparison result, and can determine whether the first detection line T1 is broken according to the comparison result.
In some possible cases, the first controller 104 sends the detection signal to the first detection line T1 as a digital quantity signal 1. When the first detection line T1 is not broken, the detection result obtained by the second controller 105 is the digital signal 1, and at this time, the detection signal obtained by the logical comparison is the same as the detection result, and it is determined that the first detection line T1 is not broken, thereby determining that the first power transmission line L1 is not broken; after the first detection line T1 breaks, the detection result obtained by the second controller 105 is the digital signal 0, and at this time, the detection signal obtained by the logical comparison is different from the detection result, and it is determined that the first detection line T1 breaks, thereby determining that the first power transmission line L1 breaks.
Further, when the first power transmission line L1 is determined to be broken through the breakage of the first detection line T1, determining that the fan is abnormal; faults may also be reported or alarms may be raised.
As can be understood from the above description, it is possible to determine whether the first detection line T1 is broken according to the detection result obtained by the second controller 105, thereby determining whether a power transmission line L1 is broken.
The state of a power transmission line in a transmission cable is accurately determined through the on-off of the detection line, and the wind generating set 101 is subjected to troubleshooting in time, so that the running safety of the wind generating set 101 is improved.
In a possible implementation manner, two ends of each detection line are respectively connected with a first controller 104 and a second controller 105, and the first controller 104 is located at one side of the generator 101 and is used for sending a detection signal to each detection line; the second controller 105 is located at one side of the current transformer 102, and is configured to detect a detection signal in each detection line and send a detection result to the first controller 104 through a connection line.
The principle of determining whether the power transmission line is broken according to the detection result is the same as that described above, and will not be described herein again.
The working principle of other devices in the wind turbine generator system 100 is similar to that in the above embodiment, and will not be described again.
By adopting the scheme of the embodiment of the application, the broken power transmission line can be specifically positioned according to whether the detection signal of the detection line changes or not, and the fault of the wind generating set is determined in time, so that the safety of the wind generating set is improved.
In the above embodiment, whether the detection line is broken is determined according to whether the detection signals in the detection line are consistent at the transmitting end and the receiving end, so that it is determined that the power transmission line corresponding to the detection line is sufficiently broken.
In one possible implementation, a relay may also be used to determine whether the detection line is broken.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a wind turbine generator system according to another embodiment of the present application.
As shown in fig. 4, the wind turbine generator system 100 in the embodiment of the present application includes a generator 101, a converter 102, a plurality of spacer rings, a multi-phase transmission cable, and a plurality of detection lines.
In this embodiment, a multi-phase transmission cable is taken as a three-phase transmission cable, each phase transmission cable includes three power transmission lines, and the number of the spacer rings for fastening the plurality of power transmission lines in each phase transmission cable is one, which is described with reference to the accompanying drawings.
The three-phase transmission cables are a first transmission cable L1, a second transmission cable L2 and a third transmission cable L3, respectively.
Wind turbine generator set 100 further includes: a dc power supply 106, a third controller 107 and a relay 108.
The dc power source 106 is located on the generator 101 side and the relay 108 is located on the converter 102 side.
The two ends of each detection line are respectively connected with a direct current power supply 106 and a coil of a relay 108.
The contact signal of the relay 108 is connected to the third controller 107.
The relay 108 is used for attracting the contacts when the corresponding detection line is connected and disconnecting the contacts when the corresponding detection line is disconnected.
By determining whether the relay 108 contacts are in the engaged state or the disengaged state, it can be determined whether the corresponding sensing line is broken.
When the contact of the relay 108 is in the attraction state, the corresponding detection line is indicated to be communicated, so that the power transmission line corresponding to the detection line can be determined not to be broken; when the contact of the relay 108 is in the open state, it indicates that the corresponding detection line is open, so that it can be determined that the power transmission line corresponding to the detection line is broken.
In the above embodiments, the power transmission lines and the detection lines are fixed by fixing devices, or the detection lines are attached to the surfaces of the corresponding power transmission lines.
The working principle of other parts of the wind turbine generator system 100 has been described in the above embodiments, and will not be described herein.
In one possible implementation, each detection line may be embedded inside the corresponding power transmission line to realize the fixation of the power transmission line and the detection line.
With reference to fig. 1, fig. 1 is a schematic structural diagram of a wind turbine generator system according to an embodiment of the present disclosure.
The three-phase transmission cables are a first transmission cable L1, a second transmission cable L2 and a third transmission cable L3, respectively.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a cross section of each phase transmission cable in a multi-phase transmission cable according to another embodiment of the present application.
As shown in fig. 5, taking the first transmission cable L1 as an example, the first transmission cable L1 includes three power transmission lines, namely, a first power transmission line P1, a second power transmission line P2, and a third power transmission line P3.
A spacer ring for fixing three power transmission lines of the first transmission line cable L1 is taken as an example.
As shown in fig. 5, the grommet G serves to fix three power transmission lines of the first transmission line cable L1.
It is understood that the number of multi-phase transmission cables and the number of power transmission lines included in each phase transmission cable may be other than three. The number of multi-phase transmission cables and the number of power transmission lines included in each phase transmission cable do not affect the implementation of the embodiments of the present application.
As shown in fig. 5, the first detection line T1 is buried inside the first power transmission line P1, and the first power transmission line P1 and the first detection line T1 are fixed to each other; the second detection line T2 is embedded inside the second power transmission line P2, and the second power transmission line P2 and the second detection line T2 are fixed to each other; the third detection line T3 is buried inside the third power transmission line P3, and the third power transmission line P3 and the third detection line T3 are fixed to each other.
When the power transmission line is broken, the detection line is also broken because the detection line is buried inside the corresponding power transmission line, and at this time, the detection signal inside the detection line changes as compared with the normal case. Therefore, it is possible to determine which power transmission line is broken according to the detection signal of the detection line.
In the above embodiment, the first transmission cable L1 is taken as an example, and for other transmission cables, the working principle is the same as that of the first transmission cable L1, and details are not described here.
The fault of the wind generating set is determined in time by accurately determining which power transmission line in which phase transmission cable is broken, so that the safety of the wind generating set is improved.
When the power transmission line is worn, the sensing line may be exposed, and the sensing line and the power transmission line or the spacer ring may move relative to each other to cause wear. When the detection line is broken due to abrasion, the power transmission line corresponding to the detection line may not be broken, and at the moment, an alarm signal for reminding maintenance personnel is generated according to the result of the breakage of the detection line, so that the maintenance personnel is reminded of timely maintaining, and further abrasion and even breakage of the cable are avoided.
The working principle of other parts of the wind turbine generator system 100 has been described in the above embodiments, and will not be described herein.
By adopting the scheme of the embodiment of the application, the broken power transmission line can be specifically positioned according to whether the detection signal of the detection line changes or not, and the fault of the wind generating set is determined in time, so that the safety of the wind generating set is improved.
The application also provides a wind power plant.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a wind farm according to another embodiment of the present application.
As shown in fig. 6, a wind farm 200 provided by the embodiment of the present application includes a plurality of wind turbine generator sets 100 described in any of the above embodiments.
In fig. 6, wind farm 200 is illustrated as including three wind turbine generator sets 100.
The number of wind turbine generators 100 is not limited in this embodiment. It is understood that the number of wind turbine generator sets 100 does not affect the implementation of the present embodiment.
The working principle of the wind turbine generator set 100 included in the wind farm 200 has been described in the above embodiments, and is not described herein.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A wind generating set, characterized in that, wind generating set includes generator, converter, a plurality of spacer rings, multi-phase transmission cable and a plurality of detection lines, wherein:
each phase transmission cable in the multi-phase transmission cable comprises a plurality of power transmission lines, and each power transmission line is fixed with one detection line in the plurality of detection lines;
a plurality of power transmission lines comprised by said each phase transmission cable secured by a first set of said plurality of spacing rings, said first set of spacing rings comprising at least one of said plurality of spacing rings;
the plurality of detection lines are not in contact with the plurality of spacer rings;
two ends of each power transmission line and each detection line are respectively connected with the generator and the converter;
each detection line is used for transmitting a detection signal.
2. The wind power generation assembly of claim 1, further comprising a plurality of fixtures;
each power transmission line and one corresponding detection line are fixed with each other through part of the fixing devices;
some of the plurality of fixing devices are arranged at preset intervals.
3. The wind turbine generator system of claim 1, wherein each of the sensing wires is attached to a surface of the corresponding power transmission line.
4. A wind power plant according to any of claims 1-3, characterized in that each of the multi-phase transmission cables comprises three power transmission lines;
each power transmission line of the three power transmission lines is in contact with the remaining two power transmission lines of the three power transmission lines to form a first gap;
the detection lines corresponding to the three power transmission lines are located in the first gap.
5. The wind turbine of claim 1, wherein each of the sensing lines is buried inside the corresponding power transmission line.
6. Wind park according to claim 1, wherein the wind park further comprises: the device comprises a connecting line, a first controller and a second controller;
the first controller is positioned on the converter side, the second controller is positioned on the generator side, and the first controller is connected with the second controller through the connecting line;
a first end of each detection line is connected with the first controller, and a second end of each detection line is connected with the second controller;
the first controller is used for sending a detection signal to each detection line;
the second controller is used for detecting detection signals in each detection line and sending detection results to the first controller through the connecting lines.
7. Wind park according to claim 6, wherein the connection line is an optical fiber or a DP line.
8. Wind park according to claim 6 or 7, wherein the detection signal is a digital quantity signal.
9. Wind park according to claim 1, wherein the wind park further comprises: a DC power supply, a third controller and a relay;
the direct current power supply is positioned on the generator side;
the relay is positioned on the converter side;
the first end of each detection line is connected with the direct-current power supply, and the second end of each detection line is connected with the coil of the relay;
the contact point signal of the relay is connected with the third controller;
and the relay is used for attracting the contact when the corresponding detection line is communicated and disconnecting the contact when the corresponding detection line is disconnected.
10. A wind park comprising a plurality of wind energy installations according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123419231.0U CN216381729U (en) | 2021-12-30 | 2021-12-30 | Wind generating set and wind power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123419231.0U CN216381729U (en) | 2021-12-30 | 2021-12-30 | Wind generating set and wind power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216381729U true CN216381729U (en) | 2022-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123419231.0U Active CN216381729U (en) | 2021-12-30 | 2021-12-30 | Wind generating set and wind power plant |
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| Country | Link |
|---|---|
| CN (1) | CN216381729U (en) |
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2021
- 2021-12-30 CN CN202123419231.0U patent/CN216381729U/en active Active
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