CN105093073A - Method for testing potential to ground of manually wound insulation of generator - Google Patents
Method for testing potential to ground of manually wound insulation of generator Download PDFInfo
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- CN105093073A CN105093073A CN201410223727.6A CN201410223727A CN105093073A CN 105093073 A CN105093073 A CN 105093073A CN 201410223727 A CN201410223727 A CN 201410223727A CN 105093073 A CN105093073 A CN 105093073A
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Abstract
The present invention provides a method for testing potential to ground of manually wound insulation of a generator based on an apparatus for testing potential to ground of manually wound insulation of a generator. The method comprises the steps of: S1, wrapping a manually wound insulation end of a generator stator with a tinfoil; S2, installing a sharp-point conductor onto a connecting conductor at the top of a high-voltage insulation support bar and testing potential to ground of the manually wound insulation end of the generator stator; S3, judging whether the potential to ground of the manually wound insulation end of the generator stator is within a preset range, executing S4 if the potential to ground of the manually wound insulation end of the generator stator is within the preset range, and otherwise, installing a sphere-shaped voltage sensor or a cylinder-shaped voltage sensor onto the connecting conductor at the top of the high-voltage insulation support bar to perform fault point positioning; and S4, installing a plate-shaped voltage sensor onto the connecting conductor at the top of the high-voltage insulation support bar and testing the potential to ground of manually wound insulation of an involute part. The method of the present invention solves the problem that a test technology in the prior art cannot test the potential to ground of manually wound insulation of an end involute part.
Description
Technical field
The present invention relates to technical field of electricity, be specifically related to a kind of method of testing of generator manually wound insulation above earth potential.
Background technology
Generator is one of visual plant in electrical network, and its safe operation is related to the safety of whole electrical network.Will carry out above earth potential test to generator manually wound insulation, moving measuring technology outside existing current potential is detect the insulation test method of manually wound insulation defect, by detecting density and the opposing insulation intensity of end manually wound insulation.It can make up the deficiency of the overhang insulation defect that the withstand voltage test of equipment AC and DC can't find; Can find lead-in wire bag defective insulation, coil nose insulating wrapping defect, insulation booth is filled mud and is filled discontented, and the defects such as the bad and bad infiltration caused of end-fitting place stator hollow copper wire welding quality of glass rope solidification are washed in colligation.But existing method of testing is mainly for manually wound insulation defect, and cannot test for end involute urve part, there is testing blind zone.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of method of testing of generator manually wound insulation above earth potential, solve the problem that existing measuring technology cannot be tested end involute urve part manually wound insulation above earth potential.
For achieving the above object, the present invention is achieved by the following technical programs:
A kind of method of testing of the generator manually wound insulation above earth potential based on generator manually wound insulation above earth potential proving installation, described device comprises the bonding conductor of High-Voltage Insulation supporting bar top, High-Voltage Insulation support bar, measuring resistance, voltage measurement display device and earthed system, is provided with measuring resistance in described High-Voltage Insulation support bar; One end of described measuring resistance is electrically connected by metallic conductor with High-Voltage Insulation support bar, and the other end is electrically connected by metallic conductor with voltage measurement display device; Be connected with earthed system bottom described voltage measurement display device, High-Voltage Insulation support bar; Detachable electrical pressure sensor is connected with High-Voltage Insulation support bar by the bonding conductor of High-Voltage Insulation supporting bar top; Described detachable electrical pressure sensor is the one in tabular voltage sensor, spherical voltage sensor and cylindric voltage sensor, and the method comprises:
S1. with tinfoil parcel generator unit stator manually wound insulation end, stator coil manually wound insulation end is comprised, high-voltage output end manually wound insulation and neutral terminal manually wound insulation;
S2. dismantle the detachable electrical pressure sensor be connected on the bonding conductor of described High-Voltage Insulation supporting bar top, and on the bonding conductor of described High-Voltage Insulation supporting bar top, sharp-point conductor is installed, test generator unit stator manually wound insulation end above earth potential;
S3. judge generator unit stator manually wound insulation end above earth potential whether in the scope preset, if in the scope preset, perform S4; Otherwise, remove and install the sharp-point conductor on the bonding conductor of described High-Voltage Insulation supporting bar top, and on the bonding conductor of described High-Voltage Insulation supporting bar top, described spherical voltage sensor be installed or cylindric voltage sensor carries out localization of fault;
S4. the sharp-point conductor on the bonding conductor of described High-Voltage Insulation supporting bar top is removed and installed, and at the bonding conductor upper mounting plate shape voltage sensor of described High-Voltage Insulation supporting bar top, test involute urve part manually wound insulation above earth potential;
S5. judge involute urve part manually wound insulation above earth potential whether in the scope preset, if in the scope preset, terminate test; Otherwise, remove and install the tabular voltage sensor on the bonding conductor of described High-Voltage Insulation supporting bar top, and on the bonding conductor of described High-Voltage Insulation supporting bar top, spherical voltage sensor be installed or cylindric voltage sensor carries out localization of fault.
Wherein, spherical voltage sensor or cylindric voltage sensor are installed in described step S3 or step S5 on the bonding conductor of described High-Voltage Insulation supporting bar top carry out localization of fault and comprise:
Spherical voltage sensor or cylindric voltage sensor that the bonding conductor of described High-Voltage Insulation supporting bar top is installed different size are repeatedly tested, accurate fault point.
Wherein, the resistance of described detachable electrical pressure sensor is less than the resistance of described measuring resistance.
Wherein, the resistance of described measuring resistance is 100M Ω.
The present invention at least has following beneficial effect:
The method of the invention can utilize generator manually wound insulation above earth potential proving installation simply directly to test generator unit stator manually wound insulation above earth potential in production scene, not only can test end involute urve part, can also accurate fault point.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is to the method flow diagram that generator manually wound insulation above earth potential is tested in the embodiment of the present invention;
Fig. 2 is the structural representation in the embodiment of the present invention, generator manually wound insulation above earth potential being tested to used proving installation;
Fig. 3 is to the schematic diagram that generator manually wound insulation above earth potential is tested in the embodiment of the present invention;
Fig. 4 is tabular voltage sensor structural representation in the embodiment of the present invention;
Fig. 5 is spherical voltage sensor structural representation in the embodiment of the present invention;
Fig. 6 is cylindric voltage sensor structural representation in the embodiment of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, clear, complete description is carried out to the technical scheme in the embodiment of the present invention, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1 and Fig. 2, the embodiment of the present invention proposes a kind of generator manually wound insulation above earth potential method of testing based on generator manually wound insulation above earth potential proving installation, described device comprises the bonding conductor of High-Voltage Insulation supporting bar top, High-Voltage Insulation support bar, measuring resistance, voltage measurement display device and earthed system, is provided with measuring resistance in described High-Voltage Insulation support bar; One end of described measuring resistance is electrically connected by metallic conductor with High-Voltage Insulation support bar, and the other end is electrically connected by metallic conductor with voltage measurement display device; Be connected with earthed system bottom described voltage measurement display device, High-Voltage Insulation support bar; Detachable electrical pressure sensor is connected with High-Voltage Insulation support bar by the bonding conductor of High-Voltage Insulation supporting bar top; Described detachable electrical pressure sensor is the one in tabular voltage sensor, spherical voltage sensor and cylindric voltage sensor, and the method comprises the steps:
Step 101: with tinfoil parcel generator unit stator manually wound insulation end, comprise stator coil manually wound insulation end, high-voltage output end manually wound insulation and neutral terminal manually wound insulation.
Step 102: dismantle the detachable electrical pressure sensor be connected on the bonding conductor of described High-Voltage Insulation supporting bar top, and install sharp-point conductor on the bonding conductor of described High-Voltage Insulation supporting bar top, test generator unit stator manually wound insulation end above earth potential.
Step 103: judge generator unit stator manually wound insulation end above earth potential whether in the scope preset, if in the scope preset, performs step 104; Otherwise, remove and install the sharp-point conductor on the bonding conductor of described High-Voltage Insulation supporting bar top, and on the bonding conductor of described High-Voltage Insulation supporting bar top, described spherical voltage sensor be installed or cylindric voltage sensor carries out localization of fault.Wherein, above earth potential preset range is 0 to 2000V.
Step 104: remove and install the sharp-point conductor on the bonding conductor of described High-Voltage Insulation supporting bar top, and at the bonding conductor upper mounting plate shape voltage sensor of described High-Voltage Insulation supporting bar top, test involute urve part manually wound insulation above earth potential.
In this step, according to electricity generator stator coil involute urve part installation situation, the information such as such as manually wound insulation spacing, density, length, also can select to install on the bonding conductor at described High-Voltage Insulation supporting bar top the test that spherical voltage sensor or cylindric voltage sensor carry out involute urve part manually wound insulation above earth potential.
Step 105: judge involute urve part manually wound insulation above earth potential whether in the scope preset, if in the scope preset, performs step 106; Otherwise, remove and install the tabular voltage sensor on the bonding conductor of described High-Voltage Insulation supporting bar top, and on the bonding conductor of described High-Voltage Insulation supporting bar top, spherical voltage sensor be installed or cylindric voltage sensor carries out localization of fault.Wherein, above earth potential preset range is 0 to 2000V.
In this step, judge involute urve part manually wound insulation above earth potential whether in the scope preset, if in the scope preset, then carry out all the other involute urve part manually wound insulation above earth potentials and measure until terminate test.
Step 106: carry out all the other involute urve part manually wound insulation above earth potentials and measure until terminate test.
Wherein, spherical voltage sensor or cylindric voltage sensor are installed in described step 103 or step 105 on the bonding conductor of described High-Voltage Insulation supporting bar top carry out localization of fault and comprise:
Spherical voltage sensor or cylindric voltage sensor that the bonding conductor of described High-Voltage Insulation supporting bar top is installed different size are repeatedly tested, accurate fault point.
Wherein, described detachable electrical pressure sensor is the voltage sensor adopting flexible conducting material to make, this material satisfies condition: the first, and resistance value is little, relative to the resistance of described measuring resistance, the voltage sensor resistance that this material makes is very little, almost negligible, secondary sexual character is variable, when sensor is subject to external force extruding, can be there is respective change to adapt to the detection under different spaces condition in its proterties, and too large change can not occur resistance.Wherein, the resistance of described measuring resistance can be 100M Ω.Described detachable electrical pressure sensor comprises tabular, spherical and cylindric, to adapt to measure the requirement that electricity generator stator coil manually wound insulation different parts above earth potential is measured.
The other end of the bonding conductor of the High-Voltage Insulation supporting bar top in device described in the embodiment of the present invention is provided with threaded hole, is connected with detachable electrical pressure sensor by bolt.Be connected with earthed system by ground connection copper cash bottom High-Voltage Insulation support bar in described device.
The Cleaning Principle figure of the embodiment of the present invention as shown in Figure 3, comprises manually wound insulation resistance 1, measuring resistance 2, milliammeter 3, sound-producing device 4 and earthed system 5.Wherein manually wound insulation resistance 1 is electricity generator stator coil manually wound insulation equivalent resistance, and as manually wound insulation is good, its resistance is much larger than measuring resistance 2 resistance; If manually wound insulation punctures or defectiveness, its resistance declines and measuring resistance 2 is even far smaller than measuring resistance 2 with the order of magnitude.Whether judge that whether manually wound insulation is good together with sounding according to the pointer of milliammeter is partially dynamic with generating means.
The structure of tabular voltage sensor, spherical voltage sensor and cylindric voltage sensor described in the embodiment of the present invention as shown in Figure 4,5, 6.
As shown in Figure 4, be the described tabular voltage sensor of one, comprise removable compliant conductive plate 1, metal connecting piece 2 and fixture 3, wherein, one end of metal connecting piece 2 is electrically connected with compliant conductive plate 1 by fixture 3;
When described removable compliant conductive plate 1 is squeezed, can there is respective change in its shape;
When described removable compliant conductive plate 1 is squeezed, the resistance of tabular sensor remains in the Standard resistance range in 0.1 ~ 50 Europe, this resistance relative standard resistance can be ignored, thus overall test result can not be affected, but make the making of compliant conductive plate easier, the requirement of material is reduced.
Wherein, the other end of described metal connecting piece utilizes bolt to be connected with other devices outside by screw thread.In the present embodiment, the other end of metal connecting piece utilizes bolt to be connected with the bonding conductor of High-Voltage Insulation supporting bar top by screw thread.
Wherein, the thickness of described removable compliant conductive plate is in the scope of 0.1cm ~ 1cm.
Thickness can meet within the scope of this space between different generator end manually wound insulation different but measure time sensor only measure and specify manually wound insulation and the requirement that is connected in series between manually wound insulation can not be made
Wherein, the width of described removable compliant conductive plate is in the scope of 2cm ~ 10cm.
Width can meet the difform measurement of different generator end manually wound insulation and require and measurement range requirement within the scope of this.
Wherein, the length of described removable compliant conductive plate is in the scope of 5cm ~ 20cm.
Length can meet the difform measurement of different generator end manually wound insulation and require and measurement range requirement within the scope of this, meets the requirement that between the manually wound insulation of end, depth is measured simultaneously.
In reality test, according to test needs, described tabular voltage sensor can adjust its parameter flexibly, such as, can change one or more parameters in its length, width or thickness as required.Such as to accurately measure involute urve above earth potential, then need constantly to change its thickness, what it was contacted is properer, thus easily obtains measurement result more accurately.
See Fig. 5, for the described spherical voltage sensor of one, comprise removable compliant conductive ball 1, bearing 2, connecting frame 3, fixture 4 and metal connecting piece 5, wherein, bearing 2 is electrically connected with connecting frame 3 through after compliant conductive ball 1, and one end of metal connecting piece 5 is electrically connected with connecting frame 3 by fixture 4;
When described removable compliant conductive ball is squeezed, can there is respective change in its shape;
When described removable compliant conductive ball is squeezed, the resistance of spherical sensor remains in the Standard resistance range in 0.1 ~ 50 Europe.
Wherein, the other end of described metal connecting piece utilizes bolt to be connected with other devices outside by screw thread.In the present embodiment, the other end of metal connecting piece utilizes bolt to be connected with the bonding conductor of High-Voltage Insulation supporting bar top by screw thread.
Wherein, the diameter of described removable compliant conductive ball is within the scope of 1cm ~ 10cm.
Diameter can meet within the scope of this space between different generator end manually wound insulation different but measure time sensor only measure and specify manually wound insulation and the requirement that is connected in series between manually wound insulation can not be made, difform the measurements requirement of different generator end manually wound insulation and measurement range requirement can be met within the scope of this simultaneously.
In reality test, according to test needs, described spherical voltage sensor can adjust its parameter flexibly, such as, can change its diameter as required, with the requirement of satisfied different test environment.Such as to the accurate localization of faults, need constantly to change its diameter, make its contact range less, thus obtain position of failure point more accurately.
See Fig. 6, for the described cylindric voltage sensor of one, comprise removable compliant conductive cylinder 1, bearing 2, connecting frame 3, fixture 4 and metal connecting piece 5, wherein, bearing 2 is electrically connected with connecting frame 3 through after compliant conductive cylinder 1, and one end of metal connecting piece 5 is electrically connected with connecting frame 3 by fixture 4;
When described removable compliant conductive cylinder is squeezed, can there is respective change in its shape;
When described removable compliant conductive cylinder is squeezed, the resistance of cylindric sensor remains in the Standard resistance range in 0.1 ~ 50 Europe.
Wherein, the other end of described metal connecting piece utilizes bolt to be connected with other devices outside by screw thread.
Wherein, the diameter of described removable compliant conductive cylinder is in the scope of 1cm ~ 10cm.
Diameter can meet within the scope of this space between different generator end manually wound insulation different but measure time sensor only measure and specify manually wound insulation and the requirement that is connected in series between manually wound insulation can not be made, difform the measurements requirement of different generator end manually wound insulation and measurement range requirement can be met within the scope of this simultaneously.
Wherein, the height of described removable compliant conductive cylinder is in the scope of 5cm ~ 20cm.
Height can meet the difform measurement of different generator end manually wound insulation and require and measurement range requirement within the scope of this, meets the requirement that between the manually wound insulation of end, depth is measured simultaneously.
In reality test, according to test needs, described cylindric voltage sensor can adjust its parameter flexibly, such as can change in its diameter and height as required one or both, such as to accurately determine abort situation, need constantly to change its diameter, make its contact range less, thus obtain abort situation more accurately.
Method described in the embodiment of the present invention can utilize generator manually wound insulation above earth potential proving installation simply directly to test generator unit stator manually wound insulation above earth potential in production scene, not only can test end involute urve part, can also accurate fault point.
Above embodiment only illustrates technical scheme of the present invention, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (4)
1. the method for testing based on the generator manually wound insulation above earth potential of generator manually wound insulation above earth potential proving installation, described device comprises the bonding conductor of High-Voltage Insulation supporting bar top, High-Voltage Insulation support bar, measuring resistance, voltage measurement display device and earthed system, is provided with measuring resistance in described High-Voltage Insulation support bar; One end of described measuring resistance is electrically connected by metallic conductor with High-Voltage Insulation support bar, and the other end is electrically connected by metallic conductor with voltage measurement display device; Be connected with earthed system bottom described voltage measurement display device, High-Voltage Insulation support bar; Detachable electrical pressure sensor is connected with High-Voltage Insulation support bar by the bonding conductor of High-Voltage Insulation supporting bar top; Described detachable electrical pressure sensor is the one in tabular voltage sensor, spherical voltage sensor and cylindric voltage sensor, and it is characterized in that, the method comprises:
S1. with tinfoil parcel generator unit stator manually wound insulation end, stator coil manually wound insulation end is comprised, high-voltage output end manually wound insulation and neutral terminal manually wound insulation;
S2. dismantle the detachable electrical pressure sensor be connected on the bonding conductor of described High-Voltage Insulation supporting bar top, and on the bonding conductor of described High-Voltage Insulation supporting bar top, sharp-point conductor is installed, test generator unit stator manually wound insulation end above earth potential;
S3. judge generator unit stator manually wound insulation end above earth potential whether in the scope preset, if in the scope preset, perform S4; Otherwise, remove and install the sharp-point conductor on the bonding conductor of described High-Voltage Insulation supporting bar top, and on the bonding conductor of described High-Voltage Insulation supporting bar top, described spherical voltage sensor be installed or cylindric voltage sensor carries out localization of fault;
S4. the sharp-point conductor on the bonding conductor of described High-Voltage Insulation supporting bar top is removed and installed, and at the bonding conductor upper mounting plate shape voltage sensor of described High-Voltage Insulation supporting bar top, test involute urve part manually wound insulation above earth potential;
S5. judge involute urve part manually wound insulation above earth potential whether in the scope preset, if in the scope preset, terminate test; Otherwise, remove and install the tabular voltage sensor on the bonding conductor of described High-Voltage Insulation supporting bar top, and on the bonding conductor of described High-Voltage Insulation supporting bar top, spherical voltage sensor be installed or cylindric voltage sensor carries out localization of fault.
2. method according to claim 1, is characterized in that, installs spherical voltage sensor or cylindric voltage sensor and carry out localization of fault and comprise in described step S3 or step S5 on the bonding conductor of described High-Voltage Insulation supporting bar top:
Spherical voltage sensor or cylindric voltage sensor that the bonding conductor of described High-Voltage Insulation supporting bar top is installed different size are repeatedly tested, accurate fault point.
3. method according to claim 1, is characterized in that, the resistance of described detachable electrical pressure sensor is less than the resistance of described measuring resistance.
4. method according to claim 1, is characterized in that, the resistance of described measuring resistance is 100M Ω.
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| CN201410223727.6A CN105093073B (en) | 2014-05-23 | 2014-05-23 | A kind of method of testing of generator manually wound insulation above earth potential |
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| CN201410223727.6A CN105093073B (en) | 2014-05-23 | 2014-05-23 | A kind of method of testing of generator manually wound insulation above earth potential |
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| CN105093073B CN105093073B (en) | 2017-08-29 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5172289A (en) * | 1986-12-17 | 1992-12-15 | Zelm Richard J | Automatic insulation tester for grounded and ungrounded electrical equipment |
| JPH06236835A (en) * | 1993-02-09 | 1994-08-23 | Nissin Electric Co Ltd | Method for impulse breakdown voltage test for capacitor |
| JPH0712884A (en) * | 1993-06-28 | 1995-01-17 | Nissin Electric Co Ltd | Ac withstand voltage tester for graded insulation capacitor |
| US5514967A (en) * | 1994-08-16 | 1996-05-07 | Zelm; Richard J. | Automatic insulation test equipment for testing high voltage electrical equipment at the rated voltage level |
| JP3533983B2 (en) * | 1999-03-24 | 2004-06-07 | Ｊｆｅスチール株式会社 | Method and apparatus for diagnosing insulation deterioration of DC machine and DC machine |
| CN201051125Y (en) * | 2006-12-31 | 2008-04-23 | 北京远东仪表有限公司 | A manually rocking intelligent resistance insulation meter |
| JP2011069634A (en) * | 2009-09-24 | 2011-04-07 | Ngk Insulators Ltd | High-voltage application faulty insulator detector |
| CN203551666U (en) * | 2013-11-08 | 2014-04-16 | 国家电网公司 | Digital display insulator resistance measuring instrument |
-
2014
- 2014-05-23 CN CN201410223727.6A patent/CN105093073B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5172289A (en) * | 1986-12-17 | 1992-12-15 | Zelm Richard J | Automatic insulation tester for grounded and ungrounded electrical equipment |
| JPH06236835A (en) * | 1993-02-09 | 1994-08-23 | Nissin Electric Co Ltd | Method for impulse breakdown voltage test for capacitor |
| JPH0712884A (en) * | 1993-06-28 | 1995-01-17 | Nissin Electric Co Ltd | Ac withstand voltage tester for graded insulation capacitor |
| US5514967A (en) * | 1994-08-16 | 1996-05-07 | Zelm; Richard J. | Automatic insulation test equipment for testing high voltage electrical equipment at the rated voltage level |
| JP3533983B2 (en) * | 1999-03-24 | 2004-06-07 | Ｊｆｅスチール株式会社 | Method and apparatus for diagnosing insulation deterioration of DC machine and DC machine |
| CN201051125Y (en) * | 2006-12-31 | 2008-04-23 | 北京远东仪表有限公司 | A manually rocking intelligent resistance insulation meter |
| JP2011069634A (en) * | 2009-09-24 | 2011-04-07 | Ngk Insulators Ltd | High-voltage application faulty insulator detector |
| CN203551666U (en) * | 2013-11-08 | 2014-04-16 | 国家电网公司 | Digital display insulator resistance measuring instrument |
Non-Patent Citations (3)
| Title |
|---|
| 张斌: "应用电位外移法测试发电机定子绕组手包绝缘", 《上海电力》 * |
| 盛昌达: "发电机定矛线圈端部泄漏电流测量的意义和作用", 《电网技术》 * |
| 辛建等: "端部电位测量法检测发电机绝缘隐患分析", 《电源技术应用》 * |
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