CN108736664A - The analysis and processing method that a kind of insulation of hydraulic generator rotor reduces - Google Patents
The analysis and processing method that a kind of insulation of hydraulic generator rotor reduces Download PDFInfo
- Publication number
- CN108736664A CN108736664A CN201810591748.1A CN201810591748A CN108736664A CN 108736664 A CN108736664 A CN 108736664A CN 201810591748 A CN201810591748 A CN 201810591748A CN 108736664 A CN108736664 A CN 108736664A
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- China
- Prior art keywords
- insulating sleeve
- insulation resistance
- insulation
- hydraulic generator
- analysis
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/346—Testing of armature or field windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0006—Disassembling, repairing or modifying dynamo-electric machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a kind of analyses of hydraulic generator rotor insulation reduction and processing method, analytical procedure to be：S1, segment lookup；S2, environmental analysis；S3, contrast test；S4, it was therefore concluded that, processing method is：S1, replacing insulation resistance reduces the part at position；S2, selection is using suitable depth after improving and whether there is or not the structures of the insulating sleeve in rim of the mouth and insulating sleeve and cushion block, to avoid the reduction of rotor insulation resistance；S3 carries out routine examination and restores to position of the hydraulic generator rotor in addition to insulating sleeve.The present invention can fast and accurately find out the reason of rotor insulation reduces and position; and by analyzing and testing; best processing mode is analyzed in the shortest time; unit is set to get well; ensure unit long-term safety stable operation; processing efficiency and the economic benefit of factory can be improved in the probability for reducing maintenance down.
Description
Technical field
The present invention relates to the analyses that technical field of hydraulic generators more particularly to a kind of insulation of hydraulic generator rotor reduce
And processing method.
Background technology
Hydrogenerator is that the synchronous alternating-current generator that water can be converted to electric energy is driven by the hydraulic turbine.By stator, rotor,
The compositions such as rack and bearing (thrust bearing, guide bearing).
The 44/8250 type hydrogenerators of SF45-that factory uses are in the long-term use, it may appear that multiple rotor is exhausted
The case where edge reduces, needs maintenance down, and frequently stopping prorogation influences processing efficiency, and there are hidden trouble of equipment, can not ensure to send out
The safe operation of motor, thus we have devised analysis and the processing method that a kind of insulation of hydraulic generator rotor reduces to solve
Certainly problem above.
Invention content
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of hydraulic generator rotor proposed
Insulate the analysis reduced and processing method.
To achieve the goals above, present invention employs following technical solutions：
A kind of analysis method that hydraulic generator rotor insulation reduces, includes the following steps：
S1, segment lookup：Discrete method searches the insulation resistance at each position of generator amature, so that it is determined that insulation resistance reduced
Concrete position；
S2, environmental analysis：When being changed according to temperature and humidity, the situation of change of rotor insulation resistance, to judge working environment
Whether humiture has an impact insulating properties；
S3, contrast test：The thickness of insulating sleeve is improved to 3-8cm, and sets two-way rim of the mouth on insulating sleeve, to improved
Insulating sleeve is tested, and whether the thickness for analyzing insulating sleeve has an impact rotor insulation；
S4, it was therefore concluded that：Analytical conclusions are obtained from the lookup and analysis of S1, S2 and S3, determining leads to insulation resistance reduction
Reason and position.
Preferably, ranging from 8~15 DEG C that temperature is detected in the S2, detection humidity are 19~28%.
Preferably, the insulating sleeve and cushion block used in the S3 is monoblock type.
A kind of processing method that hydraulic generator rotor insulation reduces is tied according to the above-mentioned obtained analysis of analysis method
Fruit has following processing step：
S1, replacing insulation resistance reduces the part at position；
S2, selection is using suitable depth after improving and whether there is or not the structures of the insulating sleeve in rim of the mouth and insulating sleeve and cushion block, comes
Avoid the reduction of rotor insulation resistance；
S3 carries out routine examination and restores to position of the hydraulic generator rotor in addition to insulating sleeve.
The reason of present invention is by reducing rotor insulation and position are searched and are analyzed, and can fast and accurately look for
Go out rotor insulation reduce the reason of and position, and by influence factor and influence component be improved and Experimental Comparison,
Analyze best processing mode, the wall thickness of insulating sleeve be improved to 6cm from 3cm, and using the insulating sleeve of monoblock type and
Cushion block can avoid carbon dust and be easily accessible in the assembly parts gap of insulating sleeve and cushion block, and repair process in the shortest time makes
Unit is got well, and is ensured unit long-term safety stable operation, is reduced the probability of maintenance down, processing efficiency and work can be improved
The economic benefit of factory.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.
Embodiment one
A kind of analysis method that hydraulic generator rotor insulation reduces, includes the following steps：
S1, segment lookup：Discrete method searches the insulation resistance at each position of generator amature, so that it is determined that insulation resistance reduced
Concrete position；
S2, environmental analysis：When being changed according to temperature and humidity, the situation of change of rotor insulation resistance, to judge working environment
Whether humiture has an impact insulating properties, detect temperature ranging from 12 DEG C, and detection humidity is 26%；
S3, contrast test：The thickness of insulating sleeve is improved to 4cm, and sets two-way rim of the mouth on insulating sleeve, to improved exhausted
Edge casing is tested, and whether the thickness for analyzing insulating sleeve has an impact rotor insulation；
S4, it was therefore concluded that：Analytical conclusions are obtained from the lookup and analysis of S1, S2 and S3, determining leads to insulation resistance reduction
Reason and position.
Embodiment two
A kind of analysis method that hydraulic generator rotor insulation reduces, includes the following steps：
S1, segment lookup：Discrete method searches the insulation resistance at each position of generator amature, so that it is determined that insulation resistance reduced
Concrete position；
S2, environmental analysis：When being changed according to temperature and humidity, the situation of change of rotor insulation resistance, to judge working environment
Whether humiture has an impact insulating properties, detect temperature ranging from 9 DEG C, and detection humidity is 19%；
S3, contrast test：The thickness of insulating sleeve is improved to 5cm, and sets two-way rim of the mouth on insulating sleeve, to improved exhausted
Edge casing is tested, and whether the thickness for analyzing insulating sleeve has an impact rotor insulation；
S4, it was therefore concluded that：Analytical conclusions are obtained from the lookup and analysis of S1, S2 and S3, determining leads to insulation resistance reduction
Reason and position.
Embodiment three
A kind of analysis method that hydraulic generator rotor insulation reduces, includes the following steps：
S1, segment lookup：Discrete method searches the insulation resistance at each position of generator amature, so that it is determined that insulation resistance reduced
Concrete position；
S2, environmental analysis：When being changed according to temperature and humidity, the situation of change of rotor insulation resistance, to judge working environment
Whether humiture has an impact insulating properties, detect temperature ranging from 8 DEG C, and detection humidity is 20%；
S3, contrast test：The thickness of insulating sleeve is improved to 6cm, and sets two-way rim of the mouth on insulating sleeve, to improved exhausted
Edge casing is tested, and whether the thickness for analyzing insulating sleeve has an impact rotor insulation；
S4, it was therefore concluded that：Analytical conclusions are obtained from the lookup and analysis of S1, S2 and S3, determining leads to insulation resistance reduction
Reason and position.
Example IV
A kind of analysis method that hydraulic generator rotor insulation reduces, includes the following steps：
S1, segment lookup：Discrete method searches the insulation resistance at each position of generator amature, so that it is determined that insulation resistance reduced
Concrete position；
S2, environmental analysis：When being changed according to temperature and humidity, the situation of change of rotor insulation resistance, to judge working environment
Whether humiture has an impact insulating properties, detect temperature ranging from 15 DEG C, and detection humidity is 28%；
S3, contrast test：The thickness of insulating sleeve is improved to 7cm, and sets two-way rim of the mouth on insulating sleeve, to improved exhausted
Edge casing is tested, and whether the thickness for analyzing insulating sleeve has an impact rotor insulation；
S4, it was therefore concluded that：Analytical conclusions are obtained from the lookup and analysis of S1, S2 and S3, determining leads to insulation resistance reduction
Reason and position.
Embodiment five
A kind of analysis method that hydraulic generator rotor insulation reduces, includes the following steps：
S1, segment lookup：Discrete method searches the insulation resistance at each position of generator amature, so that it is determined that insulation resistance reduced
Concrete position；
S2, environmental analysis：When being changed according to temperature and humidity, the situation of change of rotor insulation resistance, to judge working environment
Whether humiture has an impact insulating properties, detect temperature ranging from 10 DEG C, and detection humidity is 23%；
S3, contrast test：The thickness of insulating sleeve is improved to 8cm, and sets two-way rim of the mouth on insulating sleeve, to improved exhausted
Edge casing is tested, and whether the thickness for analyzing insulating sleeve has an impact rotor insulation；
S4, it was therefore concluded that：Analytical conclusions are obtained from the lookup and analysis of S1, S2 and S3, determining leads to insulation resistance reduction
Reason and position.
The experimental result of S2 is as follows in above-described embodiment：
| Temperature（℃） | Humidity（%） | Rotor insulation resistance（MΩ） | Remarks |
| 12 | 26 | 60 | |
| 8 | 20 | 53 | |
| 15 | 28 | 40 | |
| 9 | 19 | 20 | |
| 10 | 23 | 1.4 |
As can be seen from the table, the temperature and humidity of working environment has relationship to rotor insulation electronics, but is not decisive
Influence factor, rotor insulation known to comprehensive analysis reduce main reasons is that the deficiency of insulating sleeve and cushion block in design is made
At.
The final and optimal processing method reduced for hydraulic generator rotor insulation is：
Selection is using 6cm thickness and the insulating sleeve equipped with two-way rim of the mouth after improving, and insulating sleeve and cushion block are monoblock type, are come
The wall thickness of insulating sleeve is improved to 6cm by the reduction for avoiding rotor insulation resistance from 3cm, and using the insulating sleeve of monoblock type
And cushion block, it can avoid carbon dust and be easily accessible in the assembly parts gap of insulating sleeve and cushion block, used improved insulating sleeve
After cushion block, the position to hydraulic generator rotor in addition to insulating sleeve is needed to carry out routine examination and restore.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of analysis method that hydraulic generator rotor insulation reduces, which is characterized in that include the following steps：
S1, segment lookup：Discrete method searches the insulation resistance at each position of generator amature, so that it is determined that insulation resistance reduced
Concrete position；
S2, environmental analysis：When being changed according to temperature and humidity, the situation of change of rotor insulation resistance, to judge working environment
Whether humiture has an impact insulating properties；
S3, contrast test：The thickness of insulating sleeve is improved to 3-8cm, and sets two-way rim of the mouth on insulating sleeve, to improved
Insulating sleeve is tested, and whether the thickness for analyzing insulating sleeve has an impact rotor insulation；
S4, it was therefore concluded that：Analytical conclusions are obtained from the lookup and analysis of S1, S2 and S3, determining leads to insulation resistance reduction
Reason and position.
2. a kind of analysis method that hydraulic generator rotor insulation reduces according to claim 1, which is characterized in that described
Ranging from 8~15 DEG C that temperature is detected in S2, detection humidity are 19~28%.
3. a kind of analysis method that hydraulic generator rotor insulation reduces according to claim 1, which is characterized in that described
The insulating sleeve and cushion block used in S3 is monoblock type.
4. a kind of processing method that hydraulic generator rotor insulation reduces, which is characterized in that according to as described in claim 1 point
The obtained analysis result of analysis method, there is following processing step：
S1, replacing insulation resistance reduces the part at position；
S2, selection is using suitable depth after improving and whether there is or not the structures of the insulating sleeve in rim of the mouth and insulating sleeve and cushion block, comes
Avoid the reduction of rotor insulation resistance；
S3 carries out routine examination and restores to position of the hydraulic generator rotor in addition to insulating sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810591748.1A CN108736664A (en) | 2018-06-11 | 2018-06-11 | The analysis and processing method that a kind of insulation of hydraulic generator rotor reduces |
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|---|---|---|---|
| CN201810591748.1A CN108736664A (en) | 2018-06-11 | 2018-06-11 | The analysis and processing method that a kind of insulation of hydraulic generator rotor reduces |
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| CN108736664A true CN108736664A (en) | 2018-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810591748.1A Pending CN108736664A (en) | 2018-06-11 | 2018-06-11 | The analysis and processing method that a kind of insulation of hydraulic generator rotor reduces |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114146987A (en) * | 2021-11-30 | 2022-03-08 | 广州发展电力科技有限公司 | Wind driven generator rotor grounding processing method and system and computer equipment |
-
2018
- 2018-06-11 CN CN201810591748.1A patent/CN108736664A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114146987A (en) * | 2021-11-30 | 2022-03-08 | 广州发展电力科技有限公司 | Wind driven generator rotor grounding processing method and system and computer equipment |
| CN114146987B (en) * | 2021-11-30 | 2022-11-29 | 广州发展电力科技有限公司 | Wind driven generator rotor grounding processing method and system and computer equipment |
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Application publication date: 20181102 |