CN112564262B - Control loop power supply system and method for offshore wind turbine - Google Patents
Control loop power supply system and method for offshore wind turbine Download PDFInfo
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- CN112564262B CN112564262B CN202011363752.6A CN202011363752A CN112564262B CN 112564262 B CN112564262 B CN 112564262B CN 202011363752 A CN202011363752 A CN 202011363752A CN 112564262 B CN112564262 B CN 112564262B
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000010248 power generation Methods 0.000 claims abstract description 50
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 claims description 6
- 238000005461 lubrication Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Abstract
The invention relates to a control loop power supply system and a method of an offshore wind turbine, wherein the control loop power supply system comprises a turbine, a frequency converter, a box transformer, a tower base transformer and a UPS power supply, and further comprises: the solar power generation device is arranged on the fan platform; the control module is used for controlling the solar power generation device to supply power to the UPS when the fan fails or stops; when the fan is normal, the solar power generation device is controlled to stop supplying power to the UPS, and the tower base transformer is connected to the power grid through the box transformer, so that the UPS can take power from the power grid. By implementing the technical scheme of the invention, the storage battery in the UPS can be charged at any time without energy exhaustion, and the situation that a great deal of manpower and material resources are specially spent for providing each fan with a mobile generator to charge the UPS in advance is avoided, so that the manpower cost can be saved, the time for starting or restarting the machine set for the first time can be shortened, the generating capacity brought by the generating time is increased, and the accumulated economic benefit is quite considerable.
Description
Technical Field
The invention relates to the field of wind power, in particular to a control loop power supply system and method of an offshore wind turbine.
Background
The offshore wind power is taken as a green renewable energy source, and has great development prospect. However, at the same time, the offshore wind power is used as an industry which just starts, and there are design or equipment problems, for example, the offshore booster flat station adopts a vertical climbing ladder to change into a step ladder, improves the living environment, and the like.
At present, a fan manufacturer designs an offshore wind power supply system as an onshore fan, and the specificity of the offshore fan is not considered, namely, the offshore fan and the onshore fan are both powered down through a box transformer, then are transformed by a tower base transformer and then are fed into a UPS (uninterrupted power supply), and the UPS supplies power to each control loop of the fan. The on-site fan unit starting flow is as follows: and the diesel engine on the construction ship is used for respectively supplying power to the UPS power supply to be started, and the UPS power supply supplies power to each control loop. Normally designed, the battery in the UPS power source is only used as a temporary emergency, and the capacity generally supports operation of the control loop for 24 hours, after which time the battery energy will be exhausted. The box transformer/tower transformer protection device in the control loop cannot be put into use without the power supply of the storage battery pack, and the power supply of the power grid cannot transmit power to the box transformer to supply power to the UPS. The situation has occurred many times in the field: after the storage battery in the UPS is fully charged, the fan cannot be started within 24 hours, the diesel engine on the construction ship can only be used for charging the storage battery again, the tower foundation platform is 30-40 meters higher than the ship surface of the construction ship, a cable of tens of meters is pulled, a temporary cable is needed to be connected manually, and the temporary cable is released after the power is charged. In addition, the storage battery in the UPS power supply is charged quickly for several hours (the storage battery is damaged by the quick charge), and the storage battery in the UPS power supply can be charged slowly for at least more than 10 hours, and more restricted, if the sea condition is bad, the construction ship cannot approach to the foundation of the fan, and can not charge the storage battery in the UPS power supply at any time like the land. As a result, the time for starting the fan is greatly prolonged, and a lot of personnel resources are wasted. The same dilemma will be faced if the subsequent unit is serviced or otherwise out of service for too long.
Disclosure of Invention
The invention aims to solve the technical problem that the control loop power supply system and method of the offshore wind turbine are provided for overcoming the defect that the control loop power supply mode of the offshore wind turbine is insufficient in the prior art.
The technical scheme adopted for solving the technical problems is as follows: the control loop power supply system for constructing the offshore wind turbine comprises a turbine, a frequency converter, a box transformer, a tower base transformer and a UPS (uninterrupted Power supply) for supplying power to a control loop of the turbine, and further comprises:
the solar power generation device is arranged on the fan platform;
the control module is used for controlling the solar power generation device to supply power for the UPS when the fan fails or stops; and when the fan is normal, controlling the solar power generation device to stop supplying power to the UPS, and connecting the tower base transformer to a power grid through the box transformer so as to enable the UPS to take power from the power grid.
Preferably, the system further comprises a first switch and a second switch, wherein the first switch is connected between the low-voltage side of the tower-based transformer and the input end of the UPS, and the second switch is connected between the output end of the solar power generation device and the input end of the UPS; furthermore, the processing unit is configured to,
the control module is used for detecting the low-voltage side voltage of the tower-based transformer, judging whether the low-voltage side voltage is lower than a preset value, if yes, sending a brake-separating instruction to the first switch and sending a brake-closing instruction to the second switch; if not, a closing instruction is sent to the first switch, and a separating instruction is sent to the second switch.
Preferably, the solar power generation device includes: the power supply system comprises a solar photovoltaic power generation assembly, a photovoltaic controller, a storage battery pack and an inverter, wherein electric energy generated after the solar photovoltaic power generation assembly is irradiated by sunlight passes through the photovoltaic controller to charge the storage battery pack, and when the solar power generation device is required to supply power to the UPS, direct current output by the storage battery pack is inverted by the inverter and then is sent into the UPS.
Preferably, the method further comprises:
a third switch connected between the high-voltage side of the tank transformer and the power grid;
a fourth switch connected between the low voltage side of the tank transformer and the output end of the frequency converter;
and a fifth switch connected between the output end of the fan and the input end of the frequency converter.
Preferably, the control loop comprises:
the box transformer protection device is arranged in the tower foundation cabinet; and
And the tower-based transformer protection device is arranged in the cabin cabinet.
Preferably, the control loop further comprises:
the first video monitoring device, the SCADA system, the first emergency lighting device, the first fan and the first heating device are arranged in the tower foundation cabinet; and
The aircraft lamp, the second video monitoring device, the second emergency lighting device, the second fan, the second heating device and the emergency lubrication system are arranged in the cabin cabinet.
Preferably, the control module is configured to control the solar power generation device to supply power to the UPS power source when the fan fails or stops and the power in the UPS power source is lower than a preset power; when the fan is normal and the electric quantity in the UPS is not lower than the preset electric quantity, the solar power generation device is controlled to stop supplying power to the UPS, and the tower base transformer is connected to a power grid through the box transformer, so that the UPS can take power from the power grid.
The invention also constructs a control loop power supply method of the offshore wind turbine, which comprises the following steps:
s10, detecting the state of a fan, and if the fan fails or stops, executing a step S20; if the fan is normal, executing step S30;
s20, controlling a solar power generation device arranged on a fan platform to supply power for a UPS (uninterrupted Power supply) so that the UPS supplies power for a control loop of the fan;
and S30, controlling the solar power generation device to stop supplying power to the UPS, and connecting the UPS to a power grid through a tower base transformer and a box transformer so as to take power from the power grid to supply power to a control loop of the fan.
Preferably, the step S10 includes: detecting the low-voltage side voltage of the tower-based transformer, judging whether the low-voltage side voltage is lower than a preset value, and if yes, executing a step S20; if not, executing step S30;
the step S20 includes: transmitting a switching-off instruction to a first switch and transmitting a switching-on instruction to a second switch, wherein the first switch is connected between the low-voltage side of the tower-based transformer and the input end of the UPS; the second switch is connected between the output end of the solar power generation device and the input end of the UPS;
the step S30 includes: and sending a closing instruction to the first switch and sending a separating instruction to the second switch.
Preferably, the step S10 includes:
s40, detecting the state of the fan and the electric quantity of the UPS, and if the fan fails or stops and the electric quantity in the UPS is lower than the preset electric quantity, executing the step S20; if the fan is normal and the electric quantity in the UPS is not lower than the preset electric quantity, step S30 is executed.
In the technical scheme provided by the invention, the solar power generation device is arranged on the fan platform, and can automatically switch on and power supply when the UPS power supply fails due to the shutdown or failure of the fan, and automatically quit after the UPS power supply resumes the power supply of the power grid, so that a storage battery in the UPS power supply can be charged at any time without energy exhaustion, a large amount of manpower and material resources are specially spent to equip each fan with a mobile generator to charge the UPS power supply in advance, thus, the labor cost is saved, the time for starting or restarting a unit for the first time is shortened, the power generation amount is increased, and the accumulated economic benefit is considerable.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings that are required for the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the accompanying drawings:
FIG. 1 is a circuit diagram of a first embodiment of a control loop power supply system for an offshore wind turbine of the present invention;
FIG. 2 is a logical block diagram of the first embodiment of the solar power generation device of FIG. 1;
FIG. 3 is a flowchart of a first embodiment of a method for supplying power to a control loop of an offshore wind turbine of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the process of starting and debugging the fan, the following defects exist in the existing offshore wind power fan control loop power supply mode: when the fan loses the external power supply due to shutdown or failure, the energy of the storage battery pack in the UPS power supply can be exhausted, and a control loop of the fan cannot work. When the fan is started, the fan cannot be started normally because of the loss of protection function of the transformer and the like, so that a large amount of manpower and material resources are required to be specially spent for the fan to be started to be provided with the mobile generator, and therefore a storage battery in the UPS is charged, the manpower cost is wasted, and the time for starting or restarting the unit for the first time is prolonged.
In order to solve the technical problems, the outdoor solar power generation device is arranged on the fan platform, so that when the fan is stopped or fails, a continuous power supply is also arranged to charge a storage battery in the UPS power supply, and some important system equipment on the fan can be ensured to normally operate.
FIG. 1 is a circuit diagram of a first embodiment of a control loop power supply system for an offshore wind turbine of the invention, the control loop power supply system of the embodiment comprising: the system comprises a box transformer T1, a tower base transformer T2, a UPS power supply U2, a control module U1, a fan U4, a frequency converter U3 and a solar power generation device U5 arranged on a fan platform, wherein the UPS power supply U2 is used for supplying power to a control loop of the fan, and the control loop comprises a box transformer protection device and a tower base transformer protection device. The control module U1 is used for controlling the solar power generation device U5 to supply power to the UPS power supply U2 when the fan fails or stops; when the fan is normal, the solar power generation device U5 is controlled to stop supplying power to the UPS power supply U2, and the tower base transformer T2 is connected to a power grid through the box transformer T1, so that the UPS power supply U2 can take power from the power grid. For example, in one specific example, the grid voltage 35KV is reduced to 690VAC through a tank T1, the low side voltage 690VAC of the tank T1 is then transformed to 400VAC through a tower base transformer T2, and fed into a UPS power U2. In the UPS power supply U2, the 400VAC voltage is rectified into a dc voltage, and then the battery is charged, and the output voltage of the battery is inverted back to the 400VAC voltage, and the 400VAC voltage finally supplies power to each control loop of the tower foundation cabinet and the nacelle cabinet.
In the technical scheme of the embodiment, the solar power generation device is arranged on the fan platform, and can automatically put into power supply when the UPS power supply fails due to the shutdown or failure of the fan, and automatically exits after the UPS power supply resumes the power supply of the power grid, so that a storage battery in the UPS power supply can be charged at any time, the energy consumption is avoided, a great deal of manpower and material resources are specially spent to equip each fan with a mobile generator to charge the UPS power supply in advance, the labor cost can be saved, the time for starting or restarting the machine set for the first time can be shortened, the power generation amount caused by the power generation time is increased, and the accumulated economic benefit is considerable.
Further, the control loop power supply system of the offshore wind turbine of the embodiment further includes a first switch Q1 and a second switch Q2, wherein the first switch Q1 is connected between the low-voltage side of the tower transformer T2 and the input end of the UPS power source U2, and the second switch Q2 is connected between the output end of the solar power generation device U5 and the input end of the UPS power source U2. The control module U1 is configured to detect a low-voltage side voltage of the tower-based transformer T2, determine whether the low-voltage side voltage is lower than a preset value, and if so, send a switching-off command to the first switch Q1 and send a switching-on command to the second switch Q2; if not, a closing command is sent to the first switch Q1, and a separating command is sent to the second switch Q2.
Referring to fig. 1, if the fan normally operates, the tower base transformer T2 normally operates, and at this time, the control module U1 detects that the voltage at the low voltage side of the tower base transformer T2 is 400v±400×5%v, and further considers that the fan normally operates, and then sends a closing instruction to the first switch Q1, so that the UPS power supply U2 is powered by a normal power grid, and simultaneously sends a switching-off instruction to the second switch Q2, so as to disconnect the power supply of the solar power generation device U5; when the fan is in failure or normally stopped, the tower base transformer T2 stops working, at the moment, the control module U1 detects that the voltage of the low-voltage side of the tower base transformer T2 is lower than a set voltage value, a brake-separating instruction is sent to the first switch Q1, meanwhile, a brake-closing instruction is sent to the second switch Q2, the power supply of the UPS power supply U2 is turned to be supplied by the solar power generation device U5, and the fact that the downstream load of the UPS power supply U2 cannot work normally due to the fact that the battery in the UPS power supply U2 is exhausted is ensured.
Further, in order to better realize protection and maintenance of the device, the control loop power supply system of the offshore wind turbine of the embodiment further includes: the third switch Q3, the fourth switch Q4 and the fifth switch Q5, wherein the third switch Q3 is connected between the high-voltage side of the box transformer T1 and the power grid; the fourth switch Q4 is connected between the low-voltage side of the box transformer T1 and the output end of the frequency converter T3; the fifth switch Q5 is connected between the output end of the blower U4 and the input end of the inverter U3.
Further, in the control loop power supply system of the offshore wind turbine of this embodiment, the control loop includes, in addition to the box transformer protection device 11 disposed in the tower base cabinet and the tower base transformer protection device 21 disposed in the nacelle cabinet: the first video monitoring device 16, the SCADA system 15, the first emergency lighting device 14, the first fan 13 and the first heating device 12 are arranged in the tower foundation cabinet; and, an aircraft light 27, a second video monitoring device 26, a second emergency lighting device 25, a second fan 24, a second heating device 23, an emergency lubrication system 22, which are arranged in the cabin.
Fig. 2 is a logical structural diagram of a first embodiment of the solar power generation device of fig. 1, the solar power generation device of this embodiment includes: the solar photovoltaic power generation assembly 31, the photovoltaic controller 32, the storage battery 33 and the inverter 34, wherein the electric energy generated after the solar photovoltaic power generation assembly 31 is irradiated by sunlight is charged for the storage battery 33 through the photovoltaic controller 32, and when the storage battery is fully charged, the power is automatically cut off, and the charging is stopped. When the UPS power supply U2 is required to be supplied with power by the solar power generation device, that is, when the inverter 34 receives a power supply command sent from the control module U1, the dc power output from the battery pack 33 is inverted by the inverter 35 and then sent to the UPS power supply U2.
Further, in an alternative embodiment, the control module is configured to control the solar power generation device to supply power to the UPS power source when the fan fails or stops and the power in the UPS power source is lower than a preset power; when the fan is normal and the electric quantity in the UPS is not lower than the preset electric quantity, the solar power generation device is controlled to stop supplying power to the UPS, and the tower base transformer is connected to a power grid through the box transformer, so that the UPS can take power from the power grid.
FIG. 3 is a flowchart of a first embodiment of a method for supplying power to a control loop of an offshore wind turbine of the present invention, the method comprising the steps of:
s10, detecting the state of the fan, judging whether the fan is normal, if not, namely, if the fan is in fault or is stopped, executing the step S20; if yes, namely, the fan is normal, executing a step S30;
s20, controlling a solar power generation device arranged on a fan platform to supply power for a UPS (uninterrupted Power supply) so that the UPS supplies power for a control loop of the fan;
and S30, controlling the solar power generation device to stop supplying power to the UPS, and connecting the UPS to a power grid through a tower base transformer and a box transformer so as to take power from the power grid to supply power to a control loop of the fan.
Further, in an alternative embodiment, step S10 includes: detecting the low-voltage side voltage of the tower-based transformer, judging whether the low-voltage side voltage is lower than a preset value, and if yes, executing step S20; if not, executing step S30;
step S20 includes: transmitting a switching-off instruction to a first switch and transmitting a switching-on instruction to a second switch, wherein the first switch is connected between the low-voltage side of the tower-based transformer and the input end of the UPS; the second switch is connected between the output end of the solar power generation device and the input end of the UPS;
step S30 includes: and sending a closing instruction to the first switch and sending a separating instruction to the second switch.
Further, in an alternative embodiment, step S10 includes:
s40, detecting the state of the fan and the electric quantity of the UPS, and executing the step S20 if the fan fails or stops and the electric quantity in the UPS is lower than the preset electric quantity; if the fan is normal and the electric quantity in the UPS is not lower than the preset electric quantity, step S30 is executed.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any such modifications, equivalents, and improvements that fall within the spirit and principles of the present invention are intended to be covered by the following claims.
Claims (4)
1. The utility model provides a control circuit power supply system of offshore wind power fan, includes fan, converter, case change, tower base transformer and is used for the UPS power of the control circuit power supply of fan, its characterized in that still includes:
the solar power generation device is arranged on the fan platform;
the first switch is connected between the low-voltage side of the tower-based transformer and the input end of the UPS;
the second switch is connected between the output end of the solar power generation device and the input end of the UPS;
the control module is used for controlling the solar power generation device to supply power for the UPS when the fan fails or stops and the electric quantity in the UPS is lower than the preset electric quantity; when the fan is normal and the electric quantity in the UPS is not lower than the preset electric quantity, controlling the solar power generation device to stop supplying power to the UPS, and connecting a tower base transformer into a power grid through the box transformer so as to enable the UPS to take power from the power grid; the control module is also used for detecting the low-voltage side voltage of the tower-based transformer, judging whether the low-voltage side voltage is lower than a preset value, if yes, sending a brake-separating instruction to the first switch and sending a brake-closing instruction to the second switch; if not, a closing instruction is sent to the first switch, and a separating instruction is sent to the second switch;
the third switch is connected between the high-voltage side of the box transformer and the power grid;
the fourth switch is connected between the low-voltage side of the box transformer and the output end of the frequency converter;
the fifth switch is connected between the output end of the fan and the input end of the frequency converter;
wherein the control loop comprises:
the box transformer protection device is arranged in the tower foundation cabinet; and
The tower base transformer protection device is arranged in the cabin cabinet;
the control loop further includes:
the first video monitoring device, the SCADA system, the first emergency lighting device, the first fan and the first heating device are arranged in the tower foundation cabinet; and
The aircraft lamp, the second video monitoring device, the second emergency lighting device, the second fan, the second heating device and the emergency lubrication system are arranged in the cabin cabinet;
the solar power generation device includes: the power supply system comprises a solar photovoltaic power generation assembly, a photovoltaic controller, a storage battery pack and an inverter, wherein electric energy generated after the solar photovoltaic power generation assembly is irradiated by sunlight passes through the photovoltaic controller to charge the storage battery pack, and when the solar power generation device is required to supply power to the UPS, direct current output by the storage battery pack is inverted by the inverter and then is sent into the UPS.
2. A control loop power supply method of an offshore wind turbine, applied to the control loop power supply system of the offshore wind turbine of claim 1, comprising:
s10, detecting the state of a fan, and if the fan fails or stops, executing a step S20; if the fan is normal, executing step S30;
s20, controlling a solar power generation device arranged on a fan platform to supply power for a UPS (uninterrupted Power supply) so that the UPS supplies power for a control loop of the fan;
and S30, controlling the solar power generation device to stop supplying power to the UPS, and connecting the UPS to a power grid through a tower base transformer and a box transformer so as to take power from the power grid to supply power to a control loop of the fan.
3. The method for supplying power to the control loop of the offshore wind turbine of claim 2, wherein the step S10 includes: detecting the low-voltage side voltage of the tower-based transformer, judging whether the low-voltage side voltage is lower than a preset value, and if yes, executing a step S20; if not, executing step S30;
the step S20 includes: transmitting a switching-off instruction to a first switch and transmitting a switching-on instruction to a second switch, wherein the first switch is connected between the low-voltage side of the tower-based transformer and the input end of the UPS; the second switch is connected between the output end of the solar power generation device and the input end of the UPS;
the step S30 includes: and sending a closing instruction to the first switch and sending a separating instruction to the second switch.
4. The method for supplying power to the control loop of the offshore wind turbine of claim 2, wherein the step S10 includes:
s40, detecting the state of the fan and the electric quantity of the UPS, and if the fan fails or stops and the electric quantity in the UPS is lower than the preset electric quantity, executing the step S20; if the fan is normal and the electric quantity in the UPS is not lower than the preset electric quantity, step S30 is executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011363752.6A CN112564262B (en) | 2020-11-27 | 2020-11-27 | Control loop power supply system and method for offshore wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011363752.6A CN112564262B (en) | 2020-11-27 | 2020-11-27 | Control loop power supply system and method for offshore wind turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112564262A CN112564262A (en) | 2021-03-26 |
| CN112564262B true CN112564262B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011363752.6A Active CN112564262B (en) | 2020-11-27 | 2020-11-27 | Control loop power supply system and method for offshore wind turbine |
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| CN202009262U (en) * | 2010-12-08 | 2011-10-12 | 董呈彬 | Wind energy solar energy emergency power supply apparatus for ocean platform |
| CN102545370A (en) * | 2012-02-10 | 2012-07-04 | 上海电力学院 | Power supply device for control system of wind driven generator |
| CN103187745A (en) * | 2011-12-30 | 2013-07-03 | 华锐风电科技(集团)股份有限公司 | Auxiliary power supply system of wind generation set, wind driven generator and auxiliary power supply power supply method of wind generation set |
| CN208062887U (en) * | 2018-03-22 | 2018-11-06 | 华能国际电力股份有限公司 | A kind of control device for the big islet operation of offshore wind generating |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2560378B (en) * | 2017-03-10 | 2022-05-18 | Equinor Energy As | Power supply system for an offshore platform |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202009262U (en) * | 2010-12-08 | 2011-10-12 | 董呈彬 | Wind energy solar energy emergency power supply apparatus for ocean platform |
| CN103187745A (en) * | 2011-12-30 | 2013-07-03 | 华锐风电科技(集团)股份有限公司 | Auxiliary power supply system of wind generation set, wind driven generator and auxiliary power supply power supply method of wind generation set |
| CN102545370A (en) * | 2012-02-10 | 2012-07-04 | 上海电力学院 | Power supply device for control system of wind driven generator |
| CN208062887U (en) * | 2018-03-22 | 2018-11-06 | 华能国际电力股份有限公司 | A kind of control device for the big islet operation of offshore wind generating |
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