CN114146987B - Wind driven generator rotor grounding processing method and system and computer equipment - Google Patents
Wind driven generator rotor grounding processing method and system and computer equipment Download PDFInfo
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- CN114146987B CN114146987B CN202111473496.0A CN202111473496A CN114146987B CN 114146987 B CN114146987 B CN 114146987B CN 202111473496 A CN202111473496 A CN 202111473496A CN 114146987 B CN114146987 B CN 114146987B
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- 238000011084 recovery Methods 0.000 claims abstract description 23
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/14—Wipes; Absorbent members, e.g. swabs or sponges
- B08B1/143—Wipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
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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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0204—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
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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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/50—Maintenance or repair
- F03D80/55—Cleaning
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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
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Motor Or Generator Current Collectors (AREA)
- Wind Motors (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention provides a grounding processing method of a wind driven generator rotor, which comprises the steps of automatically processing wind to a generator cabin through a yaw system and completely shutting down an operation function switch of a generator, disassembling a collector ring, a rotor outgoing line, a carbon brush and a carbon brush holder of the generator in a collector ring chamber, protecting a rotor outgoing line and an outgoing line hole, measuring and recording interphase insulation and ground insulation of a rotor winding, the collector ring and the carbon brush holder, and cable insulation from the carbon brush holder to a connecting terminal of a frequency conversion cabinet to obtain a record of an initial detection insulation resistance value, and then performing carbon deposition cleaning and insulation recovery on the collector ring chamber by adopting a pre-prepared cleaning tool, and then performing re-assembly and re-inspection on a disassembled part and completing field cleaning. The invention provides a novel method for cleaning carbon deposition in a collector ring chamber of a generator, which is efficient, feasible and easy to operate, effectively solves the problem of grounding of a rotor of the generator, reduces maintenance time and risks and greatly reduces maintenance cost.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a wind driven generator rotor grounding processing method, a wind driven generator rotor grounding processing system and computer equipment.
Background
In the long-term operation process of the sub-wind driven generator, the grounding conditions of the generator rotor in different degrees mostly occur, for example, the interphase insulation aging of the brush holder of the generator rotor is serious, and the carbon deposition phenomenon exists in a collecting ring chamber and a collecting ring loop of the rotor, and the like.
The existing solution mainly comprises a conventional alcohol cleaning method and a new collecting ring chamber, but the two methods have defects, for example, under the condition of very serious carbon deposition, the conventional alcohol cleaning method is difficult to clean, and the alcohol cleaning operation in a closed space on an engine room is dangerous, and the collecting ring chamber is directly replaced, so that the safety risk of overhead hoisting operation is caused, the cost for purchasing new spare parts is generated, the electric quantity loss caused by the halt of dismounting equipment is caused, and the application cost of the scheme is very high.
Therefore, it is urgently needed to provide a brand-new solution which is low in cost and capable of effectively solving the grounding problem of the generator rotor of the wind generating set, and the insulation resistance values of the generator rotor, the stator loop, the collecting rings and the carbon brush holder are improved, so that the insulation resistance values are more than or equal to the technical specification requirements of the national power industry, and the normal operation of the generating equipment is ensured.
Disclosure of Invention
The invention aims to provide a wind driven generator rotor grounding processing method, a wind driven generator rotor grounding processing system and computer equipment.
In order to achieve the above object, it is necessary to provide a wind turbine generator rotor grounding processing method, system and computer device.
In a first aspect, an embodiment of the present invention provides a method for processing a rotor ground of a wind turbine, where the method includes the following steps:
preparing a cleaning tool in advance, and automatically carrying out wind treatment on a generator cabin through a yaw system;
in response to the completion of the wind treatment, the running function switches of the generator are completely shut down, collecting rings, rotor outgoing lines, carbon brushes and carbon brush holders of the generator in the collecting ring chamber are disassembled, and the rotor outgoing lines and corresponding rotor outgoing line holes are protected; (demolition line record)
Measuring and recording the phase insulation and the ground insulation of a rotor winding, a collecting ring and a carbon brush holder of the generator, and the cable insulation from the carbon brush holder to a connecting terminal of a frequency conversion cabinet to obtain an initial detection insulation resistance value record;
cleaning carbon deposition in the collector ring chamber by adopting the cleaning tool, recovering insulation of parts to be recovered, of which the insulation resistance values in the initial insulation resistance value record do not meet the preset insulation requirement, and reinstalling the collector ring, the carbon brush holder and the carbon brush;
and (4) recording each insulation resistance value in the insulation resistance value record of the initial detection after the re-detection insulation is recovered, and when all the insulation resistance values are confirmed to meet the preset insulation requirement, connecting back the rotor lead-out wire and finishing the field cleaning.
Further, the step of automatically processing the wind into the wind generator nacelle through the yaw system comprises:
acquiring the size of a yaw starting angle corresponding to the current wind speed according to the functional relation between the wind speed and the yaw starting angle;
acquiring a deviation angle between the generator cabin and the current wind direction, and judging whether the deviation angle is larger than the yaw starting angle;
and if the deviation angle is larger than the yaw starting angle, controlling the generator cabin to yaw.
Further, the step of performing protection processing on the rotor outgoing line and the corresponding rotor outgoing line hole comprises:
and sealing and isolating the rotor outgoing line and the corresponding rotor outgoing line hole by adopting a waterproof sealing material.
Further, the cleaning tool comprises a high-pressure water gun, a tungsten iodine lamp, a cleaning cloth, a brush, abrasive paper, alcohol and epoxy resin;
the step of cleaning the collector ring chamber by using the cleaning tool comprises the following steps:
the high-pressure water gun is adopted to perform high-pressure washing on the inner wall of the collecting ring chamber and an indoor electric loop, and sewage is discharged through a sewage discharge hole below the collecting ring chamber;
cleaning accumulated water in the collecting ring chamber, and performing secondary cleaning by using the cleaning cloth, the hairbrush, the abrasive paper and alcohol;
and (4) drying the inner wall of the collecting ring chamber and the indoor electric loop by adopting a iodine tungsten lamp.
Further, the step of adopting rag, brush, abrasive paper and alcohol to carry out secondary clearance includes:
the brush is adopted to remove carbon powder, accumulated water and dirt in the collecting ring chamber;
cleaning water marks, floating dust and oil stains in the collector ring chamber by using the cleaning cloth;
and checking whether the surface layer of the collecting ring is worn out or burnt black, and when the surface layer of the collecting ring is worn out or burnt black, grinding and polishing by using the abrasive paper, and dissolving the insoluble substance and disinfecting by using the alcohol.
Further, the step of drying the inner wall of the collector ring chamber and the indoor electric loop by using a tungsten iodine lamp comprises:
and a plurality of iodine-tungsten lamps are adopted, and the inner wall of the collecting ring chamber and the indoor electric loop are dried in a multidirectional uniform heat exchange heating mode.
Further, the step of drying the inner wall of the collector ring chamber and the indoor electric loop by using a tungsten iodine lamp further comprises:
measuring performance data of the inner wall of the collecting ring chamber and an indoor electric loop in real time, and judging whether the performance data is kept unchanged within a preset time; the performance data comprises the insulation resistance of the rotor winding and the temperature of each part of the iron core;
if the performance data is kept unchanged within the preset time length, the drying treatment is judged to be finished, otherwise, the drying treatment is continued.
Further, the step of performing insulation recovery on the to-be-recovered component, of which each insulation resistance value in the initial detection insulation resistance value record does not meet the preset insulation requirement, includes:
adopting the epoxy resin to perform insulation recovery on the part to be recovered, and performing rechecking on each insulation resistance value in the initial insulation resistance value record to obtain a rechecked insulation resistance value record; the part to be insulated and recovered comprises a contact surface of a collecting ring and a carbon brush;
and judging whether each insulation resistance value in the re-inspection insulation resistance value record meets the corresponding preset insulation requirement, if so, judging that insulation recovery is finished, otherwise, re-performing insulation recovery processing.
In a second aspect, an embodiment of the present invention provides a wind turbine rotor ground processing system, where the system includes:
the cleaning preparation module is used for preparing a cleaning tool in advance and automatically carrying out wind treatment on the generator cabin through a yaw system;
the disassembling protection module is used for responding to the completion of the wind treatment, completely shutting down the running function switch of the generator, disassembling a collecting ring, a rotor outgoing line, a carbon brush and a carbon brush holder of the indoor generator with the collecting ring, and performing protection treatment on the rotor outgoing line and a corresponding rotor outgoing line hole; the operation function switch comprises a tower footing cabinet door change-over switch, a cabin cabinet change-over switch, a rotor brake change-over switch, a heater protection switch, a frequency converter network side knife switch, a stator grid-connected breaker switch and a stator grid-connected switch;
the insulation measuring module is used for measuring and recording the interphase insulation and the ground insulation of a rotor winding, a collecting ring and a carbon brush holder of the generator and the cable insulation from the carbon brush holder to a connecting terminal of the frequency conversion cabinet to obtain an initial detection insulation resistance value record;
the carbon deposit cleaning module is used for cleaning the carbon deposit of the collector ring chamber by adopting the cleaning tool, performing insulation recovery on parts to be recovered, of which the insulation resistance values in the initial detection insulation resistance value record do not meet the preset insulation requirement, and reinstalling the collector ring, the carbon brush holder and the carbon brush;
and the rechecking and reinstalling module is used for rechecking each insulation resistance value in the insulation resistance value record of the primary inspection after the insulation is restored, and connecting back the rotor lead-out wire when all the insulation resistance values are confirmed to meet the preset insulation requirement, and completing the field cleaning.
In a third aspect, an embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the foregoing method when executing the computer program.
The application provides a wind driven generator rotor ground connection processing method, a system and computer equipment, and through the method, the technical scheme that after wind processing is automatically carried out on a generator cabin through a yaw system and operation function switches of a generator are completely shut down, collecting rings, rotor outgoing lines, carbon brushes and carbon brush holders of a generator in a collecting ring room are disassembled, protection processing is carried out on the rotor outgoing lines and outgoing line holes, inter-phase insulation and ground insulation of rotor windings, the collecting rings and the carbon brush holders are measured and recorded, and cable insulation from the carbon brush holders to connecting terminals of a frequency conversion cabinet is obtained to record initial detection insulation resistance values, carbon deposition cleaning and insulation recovery are carried out on the collecting ring room through a cleaning tool prepared in advance, and then disassembly parts are reassembled and rechecked, and field cleaning is completed is achieved. Compared with the prior art, the novel method for cleaning the carbon deposition in the collector ring chamber of the generator is efficient, feasible and easy to operate, effectively solves the problem of grounding of a rotor of the generator, reduces maintenance time and risks and greatly reduces maintenance cost.
Drawings
FIG. 1 is a schematic flow chart of a method for processing the grounding of a rotor of a wind turbine in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a wind turbine rotor grounding processing system according to an embodiment of the invention;
fig. 3 is an internal structural diagram of a computer device in the embodiment of the present invention.
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments, and it is obvious that the embodiments described below are part of the embodiments of the present invention, and are used for illustrating the present invention only, but not for limiting the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The wind driven generator rotor grounding processing method provided by the invention can be applied to carbon deposition cleaning of a wind driven generator collecting ring chamber of a wind driven generator set in principle, short circuit burning of important equipment such as a generator caused by unqualified insulation is avoided, equipment hidden danger is eliminated in time, and the corresponding generator rotor grounding problem is solved.
In one embodiment, as shown in FIG. 1, a wind turbine rotor grounding handling method is provided, the method comprising the steps of:
s11, preparing a cleaning tool in advance, and carrying out automatic wind alignment treatment on a generator cabin through a yaw system;
wherein, the clearance instrument can be disposed according to actual demand, except that need prepare the necessary high-pressure squirt of clearance carbon deposit, iodine tungsten lamp, rag, brush, abrasive paper, alcohol and epoxy, still need prepare tools such as spanner, crowbar, wire rope, sleeper and safety protection articles for use a plurality of, and the specification material of every kind of instrument is all decided according to specific operating condition, prepares in advance like this embodiment: 1X-RANGE 3 generation (K3 PLUS) high pressure water gun (power: 1600W, pressure 120 Bar), 4 iodine tungsten lamps (500W) for drying, 95% alcohol for cleaning insoluble substances, and epoxy resin with epoxy value of 0.25-0.45 for insulation treatment. Before the tower is climbed after the cleaning tool is prepared, the yaw system is required to be used for automatically facing wind so as to prevent sewage from flowing to the tower barrel under the influence of wind force during cleaning, and the operation can be carried out if the average wind speed is lower than 6 m/s in 30 minutes in the day, but the thunderstorm weather does not accord with the operation condition. Specifically, the step of automatically processing wind to the wind power generator cabin through the yaw system comprises the following steps:
acquiring the size of a yaw starting angle corresponding to the current wind speed according to the functional relation between the wind speed and the yaw starting angle;
acquiring a deviation angle between the generator cabin and the current wind direction, and judging whether the deviation angle is larger than the yaw starting angle;
and if the deviation angle is larger than the yaw starting angle, controlling the generator cabin to yaw.
S12, responding to the completion of the wind treatment, completely shutting down the running function switches of the generator, disassembling a collecting ring, a rotor outgoing line, a carbon brush and a carbon brush holder of the indoor generator with the collecting ring, and performing protection treatment on the rotor outgoing line and a corresponding rotor outgoing line hole; the operation function switch comprises a tower footing cabinet door change-over switch, a cabin cabinet change-over switch, a rotor brake change-over switch, a heater protection switch, a frequency converter network side knife switch, a stator grid-connected breaker switch and a stator grid-connected switch;
wherein, the complete shutdown of the operation function switch is a necessary safety measure before the grounding treatment, and the method specifically comprises the following steps: under the remote stop state of the fan, firstly, two change-over switches on a cabinet door of a generator tower footing cabinet are rotated to a stop position or a maintenance position, then, the two change-over switches of the generator cabinet are rotated to the stop position or the maintenance position, and after the generator rotor brake change-over switch is rotated to the brake position, a generator heater protection switch is disconnected, a frequency converter network side knife switch is pulled open, a generator stator grid-connected breaker switch is disconnected, the generator stator grid-connected switch is shaken to the maintenance position, and a hub locking pin is locked. After the preparation for shutting down the fan is completed, the skylight is opened, the exhaust fan is opened for ventilation, the relevant parts are required to be disassembled, corresponding protection treatment is carried out, and then the collector ring of the generator is cleaned. Specifically, the protection treatment mainly includes waterproof protection of the rotor outgoing line from the corresponding rotor outgoing line hole, and in this embodiment, a waterproof sealing material such as a preservative film or a plastic film is used for sealing and isolating the rotor outgoing line and the corresponding rotor outgoing line hole, so that unnecessary damage to part of components due to subsequent cleaning is effectively prevented.
S13, measuring and recording the phase insulation and the ground insulation of a rotor winding, a collecting ring and a carbon brush holder of the generator, and the cable insulation from the carbon brush holder to a connecting terminal of a frequency conversion cabinet to obtain an initial detection insulation resistance value record;
after the collecting ring, the rotor lead-out wire, the carbon brush and the carbon brush holder are disassembled, the insulation resistance values of relevant parts need to be measured so as to know the current insulation processing conditions of the electrical equipment and the loop in the collecting ring chamber of the generator. Specifically, the step of measuring to obtain the record of the insulation resistance value of the initial inspection comprises the following steps: measuring and recording the interphase insulation and the ground insulation of the rotor winding through a generator rotor tester; measuring and recording the interphase insulation and the ground insulation of the collecting rings through a megger; measuring and recording the phase insulation and the ground insulation of the carbon brush holder through an ohm meter (2500V); and measuring and recording the cable insulation from the carbon brush holder to the connecting terminal of the frequency conversion cabinet through an insulation resistance tester.
S14, cleaning deposited carbon in the collector ring chamber by adopting the cleaning tool, performing insulation recovery on parts to be recovered, of which the insulation resistance values in the initial detection insulation resistance value record do not meet the preset insulation requirement, and reinstalling the collector rings, the carbon brush holder and the carbon brushes; wherein, carbon deposit clearance mainly includes two parts: high-pressure washing, secondary cleaning after washing and equipment drying treatment. Specifically, the step of cleaning the collector ring chamber for carbon deposition comprises:
the high-pressure water gun is adopted to perform high-pressure washing on the inner wall of the collecting ring chamber and an indoor electric loop, and sewage is discharged through a sewage discharge hole below the collecting ring chamber;
cleaning accumulated water in the collecting ring chamber, and performing secondary cleaning by using the cleaning cloth, the hairbrush, the abrasive paper and alcohol; wherein, the step of secondary clearance includes: the hairbrush is adopted to remove carbon powder, accumulated water and dirt in the collecting ring chamber; cleaning water marks, floating dust and oil stains inside the collecting ring chamber by using the cleaning cloth; and checking whether the surface layer of the collecting ring is worn out or burnt black, and when the surface layer of the collecting ring is worn out or burnt black, grinding and polishing by using the abrasive paper, and dissolving the insoluble substance and disinfecting by using the alcohol.
And (4) drying the inner wall of the collecting ring chamber and the indoor electric loop by adopting a iodine tungsten lamp. Wherein, the step of drying treatment includes: and a plurality of iodine-tungsten lamps are adopted, and the inner wall of the collecting ring chamber and the indoor electric loop are dried in a multidirectional uniform heat exchange heating mode. Meanwhile, in the drying process, it is also necessary to detect relevant performance data in real time to confirm the drying condition of the relevant equipment, specifically, the drying step further includes:
measuring performance data of the inner wall of the collecting ring chamber and an indoor electric loop in real time, and judging whether the performance data is kept unchanged within a preset time; the performance data comprises the insulation resistance of the rotor winding and the temperature of each part of the iron core;
if the performance data is kept unchanged within the preset time length, the drying treatment is judged to be finished, otherwise, the drying treatment is continued.
In addition, in order to ensure that the power generation equipment normally operates, the insulation resistance values of the corresponding generator rotor, the corresponding stator loop, the corresponding collecting rings, the corresponding carbon brush holders and the like are required to be more than or equal to the technical specification requirements of the national power industry, and the corresponding insulation recovery treatment of the parts to be recovered which do not meet the preset insulation requirements is required to be determined according to the recording condition of the initial detection insulation resistance values, and the method specifically comprises the following steps:
adopting the epoxy resin to perform insulation recovery on the part to be recovered, and performing rechecking on each insulation resistance value in the initial insulation resistance value record to obtain a rechecked insulation resistance value record; the part to be insulated and recovered comprises a contact surface of a collecting ring and a carbon brush;
and judging whether each insulation resistance value in the re-inspection insulation resistance value record meets the corresponding preset insulation requirement, if so, judging that the insulation recovery is finished, otherwise, re-performing the insulation recovery treatment.
After the insulation recovery is completed through the steps, the insulation resistance value after the insulation recovery treatment needs to be rechecked through the following step S15, the insulation effect of the electric equipment and the loop in the collector ring chamber of the generator is further confirmed to reach the standard, then the rotor of the generator is connected back, the carbon deposition cleaning work of the collector ring chamber of the generator is completed, and the generator can normally operate by subsequently turning on each operation function switch of the generator.
S15, recording all insulation resistance values in the insulation resistance value record of the initial detection after the insulation recovery of the re-detection, and connecting back the rotor lead-out wire when all the insulation resistance values are confirmed to meet the preset insulation requirement, and finishing the field cleaning.
When the wind driven generator carbon deposition cleaning needs to be carried out in a fan cabin at the height of 65 meters and the power generation equipment cannot seep water in the carbon deposition cleaning process, the method and the device have the advantages that the old collector ring chamber which is seriously replaced due to carbon deposition is used for carbon deposition cleaning and accumulation cleaning on the ground, the cleaning experience is used on the wind driven generator which is seriously deposited by the collector ring chamber, and the carbon deposition cleaning is directly carried out in the cabin.
It should be noted that, although the steps in the above-described flowcharts are shown in sequence as indicated by arrows, the steps are not necessarily executed in sequence as indicated by the arrows. The steps are not limited to being performed in the exact order illustrated and, unless explicitly stated herein, may be performed in other orders.
In one embodiment, as shown in fig. 2, there is provided a wind turbine rotor grounding handling system, the system comprising:
the cleaning preparation module 1 is used for preparing a cleaning tool in advance and automatically carrying out wind alignment treatment on a generator cabin through a yaw system;
the disassembling protection module 2 is used for responding to the completion of the wind treatment, completely shutting down the running function switch of the generator, disassembling a collecting ring, a rotor outgoing line, a carbon brush and a carbon brush holder of the indoor generator of the collecting ring, and performing protection treatment on the rotor outgoing line and a corresponding rotor outgoing line hole; the operation function switch comprises a tower footing cabinet door change-over switch, a cabin cabinet change-over switch, a rotor brake change-over switch, a heater protection switch, a frequency converter network side knife switch, a stator grid-connected breaker switch and a stator grid-connected switch;
the insulation measuring module 3 is used for measuring and recording the phase insulation and the ground insulation of a rotor winding, a collecting ring and a carbon brush holder of the generator, and the cable insulation from the carbon brush holder to a connecting terminal of the frequency conversion cabinet to obtain an initial detection insulation resistance value record;
a carbon deposit cleaning module 4, configured to clean carbon deposits in the collector ring chamber by using the cleaning tool, perform insulation recovery on the to-be-recovered component in which each insulation resistance value in the initial insulation resistance value record does not meet a preset insulation requirement, and reinstall the collector ring, the carbon brush holder, and the carbon brush;
and the rechecking and reinstalling module 5 is used for rechecking each insulation resistance value in the insulation resistance value record of the initial inspection after the insulation is restored, and connecting back the rotor lead-out wire when all the insulation resistance values are confirmed to meet the preset insulation requirement, and completing the field cleaning.
It should be noted that, all or part of the modules in the wind turbine rotor grounding processing system may be implemented by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules. For specific definition of the grounding processing system based on the wind turbine rotor, refer to the definition of the grounding processing method of the wind turbine rotor in the above, and the detailed description is omitted here.
Fig. 3 shows an internal structure diagram of a computer device in one embodiment, and the computer device may be specifically a terminal or a server. As shown in fig. 3, the computer apparatus includes a processor, a memory, a network interface, a display, and an input device, which are connected through a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a wind turbine rotor grounding handling method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on a shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those of ordinary skill in the art that the architecture shown in FIG. 3 is a block diagram of only a portion of the architecture associated with the subject application, and is not intended to limit the computing devices to which the subject application may be applied, as a particular computing device may include more or less components than those shown in the figures, or a combination of certain components, or an arrangement of components in common.
In one embodiment, a computer device is provided, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above method when executing the computer program.
To sum up, the wind power generator rotor grounding processing method, the wind power generator rotor grounding processing system and the computer equipment provided by the embodiment of the invention realize that after the generator cabin is automatically subjected to wind treatment through a yaw system and the running function switches of the generator are completely shut down, the collector ring, the rotor outgoing line, the carbon brush and the carbon brush holder of the generator in the collector ring chamber are disassembled, the rotor outgoing line and the outgoing line opening are subjected to protection treatment, the interphase insulation and the ground insulation of the rotor winding, the collector ring and the carbon brush holder are measured and recorded, and the cable insulation from the carbon brush holder to the connecting terminal of the frequency conversion cabinet is obtained to obtain a primary detection insulation resistance value record, then a cleaning tool prepared in advance is adopted to perform carbon deposit cleaning and insulation recovery on the collector ring chamber, the disassembly part is subjected to reinstallation and rechecking, and field cleaning is completed, a high-efficiency, feasible and easy-to-operate generator collector ring chamber carbon deposit cleaning scheme is provided, the short-circuit burnout of important equipment caused by unqualified insulation is effectively avoided, the hidden danger of the generator is eliminated in time, the generator grounding problem of the generator is solved, the generator, the valuable and the carbon deposit cleaning scheme is greatly reduced compared with the conventional scheme, the maintenance cost, and the maintenance cost is greatly reduced, and the maintenance cost is greatly increased.
The embodiments in this specification are described in a progressive manner, and all the same or similar parts of the embodiments are directly referred to each other, and each embodiment is described with emphasis on differences from other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment. It should be noted that, the technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the scope of the present description should be considered as being included in the present specification.
The above-mentioned embodiments only express some preferred embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these should be construed as the protection scope of the present application. Therefore, the protection scope of the present patent application shall be subject to the protection scope of the claims.
Claims (6)
1. A wind driven generator rotor grounding processing method is characterized by being applied to a high-altitude wind driven generator cabin, and comprises the following steps:
preparing a cleaning tool in advance, and carrying out automatic wind treatment on a generator cabin through a yaw system; the cleaning tool comprises a high-pressure water gun, a iodine-tungsten lamp, a cleaning cloth, a brush, abrasive paper, alcohol and epoxy resin;
in response to the completion of the wind treatment, the running function switches of the generator are completely shut down, the collecting rings, the rotor outgoing lines, the carbon brushes and the carbon brush holders of the indoor generator with the collecting rings are disassembled, and the rotor outgoing lines and the corresponding rotor outgoing line holes are subjected to protection treatment; the operation function switch comprises a tower footing cabinet door change-over switch, a cabin cabinet change-over switch, a rotor brake change-over switch, a heater protection switch, a frequency converter network side knife switch, a stator grid-connected breaker switch and a stator grid-connected switch;
measuring and recording the interphase insulation and the ground insulation of a rotor winding, a collecting ring and a carbon brush holder of the generator and the cable insulation from the carbon brush holder to a connecting terminal of a frequency conversion cabinet to obtain an initial detection insulation resistance value record;
cleaning carbon deposition of the collector ring chamber by adopting the cleaning tool, recovering insulation of parts to be recovered, of which the insulation resistance values in the initial insulation resistance value record do not meet the preset insulation requirement, and reinstalling the collector rings, the carbon brush holder and the carbon brushes;
the insulation resistance values in the insulation resistance value records of the primary detection after the re-detection insulation recovery, and when all the insulation resistance values are confirmed to meet the preset insulation requirements, the rotor lead-out wires are connected back, and the field cleaning is completed;
the step of protecting the rotor outgoing line and the corresponding rotor outgoing line hole comprises the following steps:
sealing and isolating the rotor outgoing line and the corresponding rotor outgoing line hole by adopting a waterproof sealing material;
the step of cleaning the collector ring chamber by using the cleaning tool comprises the following steps:
the high-pressure water gun is adopted to perform high-pressure washing on the inner wall of the collecting ring chamber and an indoor electric loop, and sewage is discharged through a sewage discharge hole below the collecting ring chamber;
cleaning accumulated water in the collecting ring chamber, and performing secondary cleaning by using the cleaning cloth, the hairbrush, the abrasive paper and alcohol;
drying the inner wall of the collector ring chamber and the indoor electric loop by adopting a iodine tungsten lamp;
the step of drying the inner wall of the collecting ring chamber and the indoor electric loop by adopting a iodine tungsten lamp comprises the following steps:
drying the inner wall of the collector ring chamber and the indoor electric loop by adopting a plurality of iodine-tungsten lamps in a multi-azimuth uniform heat exchange heating mode;
measuring performance data of the inner wall of the collecting ring chamber and an indoor electric loop in real time, and judging whether the performance data is kept unchanged within a preset time; the performance data comprises insulation resistance of the rotor winding and temperature of each part of the iron core;
if the performance data is kept unchanged within the preset time length, the drying treatment is judged to be finished, otherwise, the drying treatment is continued.
2. The wind turbine rotor grounding handling method of claim 1, wherein said step of automatically handling wind to the wind turbine nacelle via a yaw system comprises:
acquiring the size of a yaw starting angle corresponding to the current wind speed according to the functional relation between the wind speed and the yaw starting angle;
acquiring a deviation angle between the generator cabin and the current wind direction, and judging whether the deviation angle is larger than the yaw starting angle;
and if the deviation angle is larger than the yaw starting angle, controlling the generator cabin to yaw.
3. The wind turbine rotor grounding treatment method according to claim 1, wherein the secondary cleaning step using the rag, the brush, the sand paper and the alcohol comprises:
the brush is adopted to remove carbon powder, accumulated water and dirt in the collecting ring chamber;
cleaning water marks, floating dust and oil stains inside the collecting ring chamber by using the cleaning cloth;
and checking whether the surface layer of the collector ring is worn out or burned black, and when the surface layer of the collector ring is worn out or burned black, grinding and polishing by using the sand paper, and dissolving insoluble substances and disinfecting by using the alcohol.
4. The wind turbine rotor grounding processing method according to claim 1, wherein the step of performing insulation recovery on the component to be recovered, of which each insulation resistance value in the initial insulation resistance value record does not satisfy a preset insulation requirement, comprises:
adopting the epoxy resin to perform insulation recovery on the part to be recovered, and performing rechecking on each insulation resistance value in the initial insulation resistance value record to obtain a rechecked insulation resistance value record; the part to be insulated and recovered comprises a contact surface of the collecting ring and the carbon brush;
and judging whether each insulation resistance value in the re-inspection insulation resistance value record meets the corresponding preset insulation requirement, if so, judging that insulation recovery is finished, otherwise, re-performing insulation recovery processing.
5. Wind turbine rotor ground handling system, characterized in that it is capable of performing the wind turbine rotor ground handling method according to any of claims 1-4, the system comprising:
the cleaning preparation module is used for preparing a cleaning tool in advance and automatically carrying out wind treatment on the generator cabin through a yaw system;
the disassembling protection module is used for responding to the completion of the wind treatment, completely shutting down the running function switch of the generator, disassembling a collecting ring, a rotor outgoing line, a carbon brush and a carbon brush holder of the indoor generator with the collecting ring, and performing protection treatment on the rotor outgoing line and a corresponding rotor outgoing line hole; the operation function switch comprises a tower footing cabinet door change-over switch, a cabin cabinet change-over switch, a rotor brake change-over switch, a heater protection switch, a frequency converter network side knife switch, a stator grid-connected breaker switch and a stator grid-connected switch;
the insulation measuring module is used for measuring and recording the interphase insulation and the ground insulation of a rotor winding, a collecting ring and a carbon brush holder of the generator and the cable insulation from the carbon brush holder to a connecting terminal of the frequency conversion cabinet to obtain an initial detection insulation resistance value record;
the carbon deposit cleaning module is used for cleaning the carbon deposit of the collector ring chamber by adopting the cleaning tool, performing insulation recovery on parts to be recovered, of which the insulation resistance values in the initial detection insulation resistance value record do not meet the preset insulation requirement, and reinstalling the collector ring, the carbon brush holder and the carbon brush;
and the rechecking and reinstalling module is used for rechecking each insulation resistance value in the insulation resistance value record of the primary inspection after the insulation is restored, and connecting back the rotor lead-out wire when all the insulation resistance values are confirmed to meet the preset insulation requirement, and completing the field cleaning.
6. A computer arrangement comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method as claimed in any one of claims 1 to 4 when executing the computer program.
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| CN115220507B (en) * | 2022-09-21 | 2022-12-16 | 山西万家寨水控水利机电科技服务有限公司 | Novel integrated motor with leakage protection device |
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