CN103630838B - A kind of double-fed generator is to dragging temperature-raising experimental method - Google Patents
A kind of double-fed generator is to dragging temperature-raising experimental method Download PDFInfo
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- CN103630838B CN103630838B CN201310691230.2A CN201310691230A CN103630838B CN 103630838 B CN103630838 B CN 103630838B CN 201310691230 A CN201310691230 A CN 201310691230A CN 103630838 B CN103630838 B CN 103630838B
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Abstract
Double-fed generator of the present invention, to dragging temperature-raising experimental method and device, adopts two double-fed generators to be in together under double-fed pattern and runs；Adopt auxiliary motor that shaft coupling is driven；Respectively the rotor of two double-fed generators being controlled by two rotor-side variable frequency devices so that it is Zhong Yitai is in electro dynamic and runs, another is in generating state and runs.Carry out grid-connected after rotating speed arrives grid-connected rotating speed；The stator of two rotor-side variable frequency devices and two double-fed generators is connected to same power supply grid.Double-fed generator is to dragging temperature-rise test device, including two double-fed generators, pressure regulator, two rotor-side variable frequency devices, grid-connected bus and for driving the auxiliary motor of shaft coupling.The present invention proposes a kind of new for drag mode formula, reduce the requirement to pull-over gear in traditional method, add a kind of new for dragging temperature rise detection approach, solve during the test of high-power double-fed generator pull-over gear requirement power is sufficiently large, and require corresponding to drag the difficult problem that frequency inverter capacity is sufficiently large.
Description
Technical field
The present invention relates to electric machines test technical field, more specifically a kind of double-fed generator to dragging temperature-raising experimental method and device.
Background technology
Traditional double-fed generator to drag temperature-raising experimental method be usually employing one asynchronous motor, or the rotor of a double-fed generator is carried out short circuit, it is considered as asynchronous motor to use, carries out, to dragging, completing dragging temperature rise test with this with a double-fed generator.
This method requires that the pull-over gear power selected is more than double-fed generator, actual tests is difficult to the pull-over gear seeking to match, and doubly-fed generation acc power is general all bigger, mostly at more than 1.5MW, the converter that controls of dragging motor is just proposed the requirement of a capacity by this, it is possible to therefore meeting limits the test capability of existing equipment.
From the above mentioned, how to seek a kind of new double-fed generator to dragging temperature-raising experimental method, to release equipment restriction, it is achieved two double-fed generators all under double-fed pattern to dragging, become those skilled in the art and need badly and solve the technical problem that.
Through retrieval, it does not have find identical domestic existing patented technology.
Summary of the invention
The present invention provides a kind of double-fed generator to dragging temperature-raising experimental method and device, to release equipment restriction, it is achieved two double-fed generators all carry out dragging temperature rise test under double-fed pattern.
The present invention provides following technical scheme: described double-fed generator, to dragging temperature-raising experimental method, adopts two double-fed generators to be in together under double-fed pattern and runs；Adopt auxiliary motor that shaft coupling is driven；Respectively the rotor of two double-fed generators being controlled by two rotor-side variable frequency devices so that it is Zhong Yitai is in electro dynamic and runs, another is in generating state and runs.
Described double-fed generator, to dragging temperature-raising experimental method, carries out grid-connected after double-fed generator rotating speed arrives grid-connected rotating speed；The stator of two rotor-side variable frequency devices and two double-fed generators is connected to same power supply grid, and the voltage of described power supply grid is adjusted by pressure regulator.
Described double-fed generator is to dragging specifically comprising the following steps that of temperature-raising experimental method
A, provide the primary voltage of doubly-fed generation machine stator grid-connected voltage and rotor-side variable frequency device through pressure regulator to grid-connected bus from power supply grid；
B, dragged shaft coupling by auxiliary motor so that it is rotating speed arrives the grid-connected rotating speed of double-fed generator；Respectively two double-fed generators are carried out grid-connected debugging, checks that whether phase sequence is consistent with electrical network；
C, a selected double-fed generator are pull-over gear, carry out grid-connected, regulate pull-over gear rotor-side variable frequency device, make this double-fed generator be in electro dynamic；
D, another double-fed generator selected are electromotor, carry out grid-connected, and regulator generator rotor-side variable frequency device makes this double-fed generator be in generating state；
E, until two double-fed generators to when dragging stable, auxiliary motor out of service；
F, adjustment pull-over gear rotor-side variable frequency device, make pull-over gear rotating speed arrive the specified running speed of double-fed generator；
G, regulator generator rotor-side variable frequency device, make generated output power arrive rated output power.
Described power supply grid is 10kV power supply grid；Described rotor-side variable frequency device is four-quadrant frequency converter.
Described auxiliary electric acc power is more than the rated no-load mechanical loss sum of two double-fed generators.
Described auxiliary motor rated speed is more than 80% synchronous rotational speed of double-fed generator.
Described double-fed generator is to dragging temperature-rise test device, including two by the joining double-fed generator of shaft coupling, wherein one be used as pull-over gear, another be used as electromotor, also include pressure regulator, two rotor-side variable frequency devices, grid-connected bus and for driving the auxiliary motor of shaft coupling；Described grid-connected bus connects power supply grid by pressure regulator；Described double-fed generator includes stator coil and rotor coil, and described stator coil connects grid-connected bus, and described rotor coil connects grid-connected bus by rotor-side variable frequency device.
High-voltage switch circuit breaker it is connected between pressure regulator and power supply grid；It is respectively connected with switch disconnector between the two ends of rotor-side variable frequency device, stator coil and grid-connected bus.
Described pressure regulator is 0 ~ 10kV pressure regulator；Described rotor-side variable frequency device includes pull-over gear four-quadrant rotor-side variable frequency device and electromotor four-quadrant rotor-side variable frequency device, is respectively intended to the rotor of rotor and the electromotor controlling pull-over gear；Described stator coil includes pull-over gear stator coil and electricity generator stator coil；Described rotor coil includes pull-over gear rotor coil and electric generator rotor coil.
The present invention drives shaft coupling to rotate by an auxiliary motor, two four-quadrant rotor double-fed frequency converters control two double-fed generators respectively so that it is Zhong Yitai is in electro dynamic and runs, and another is in generating state and runs, thus carrying out dragging temperature rise test.Than traditional to dragging temperature-raising experimental method, proposing of present invention innovation is a kind of new for drag mode formula, reduce the requirement to pull-over gear in traditional method, add a kind of new for dragging temperature rise detection approach, solve during the test of high-power double-fed generator pull-over gear requirement power is sufficiently large, and require to drag accordingly the difficult problem that frequency inverter capacity is sufficiently large.
Accompanying drawing explanation
Fig. 1 is the double-fed generator of the present invention principle schematic to dragging temperature-raising experimental method.
In figure: 1,10kV ac bus, 2, high-voltage switch circuit breaker, 3,0 ~ 10kV pressure regulator, 4, grid-connected bus, 5, switch disconnector one, 6, switch disconnector two, 7, pull-over gear four-quadrant rotor-side variable frequency device, 8, electromotor four-quadrant rotor-side variable frequency device, 9, switch disconnector three, 10, switch disconnector four, 11, switch disconnector five, 12, switch disconnector six, 13, pull-over gear stator coil, 14, pull-over gear rotor coil, 15, shaft coupling, 16, auxiliary motor, 17, electricity generator stator coil, 18, electric generator rotor coil.
Detailed description of the invention
The embodiment of the invention discloses a kind of double-fed generator to dragging temperature-raising experimental method, proposing of innovation is a kind of new for drag mode formula, reduces the requirement to pull-over gear in traditional method, adds a kind of new for dragging temperature rise detection approach.Below in conjunction with accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described.
As it is shown in figure 1, described double-fed generator is to dragging temperature-raising experimental method, provide the voltage being suitable for double-fed generator for grid-connected bus 4 through 0 ~ 10kV pressure regulator 3 from 10kV electrical network；Driven shaft coupling 15 by auxiliary motor 16, make double-fed generator rotate to grid-connected rotating speed, respectively the double-fed generator of the left and right sides is carried out independent grid-connected debugging；Then with left side double-fed generator for pull-over gear, carry out grid-connected, regulate pull-over gear four-quadrant rotor-side variable frequency device 7, make pull-over gear be in electro dynamic；Again with right side double-fed generator for electromotor, carry out grid-connected, regulator generator four-quadrant rotor-side variable frequency device 8, make electromotor be in generating state；Until two double-fed generators to when pushing away stable, auxiliary motor 16 out of service；Regulate pull-over gear four-quadrant rotor-side variable frequency device 7, make motor speed arrive rated speed, regulator generator four-quadrant rotor-side variable frequency device 8, make double-fed generator be in rated generation state.Thus realize two double-fed generators to dragging.
Concrete operations are as follows:
1, provide, to grid-connected bus, the voltage being suitable for double-fed generator through pressure regulator from 10kV ac bus.
2, shaft coupling is dragged by auxiliary motor so that it is rotating speed arrives the grid-connected rotating speed of double-fed generator.
3, respectively to two grid-connected debugging of double-fed generator, check that whether phase sequence is consistent with electrical network.
4, by grid-connected for the double-fed generator that is chosen to be pull-over gear, regulate pull-over gear four-quadrant rotor-side variable frequency device, make motor be in electro dynamic.
5, by grid-connected for the double-fed generator that is chosen to be electromotor, regulator generator four-quadrant rotor-side variable frequency device, make motor be in generating state.
5, until two double-fed generators to when pushing away stable, auxiliary motor is out of service.
6, regulate pull-over gear four-quadrant rotor-side variable frequency device, make pull-over gear rotating speed rise to the specified running speed of double-fed generator.
7, regulator generator four-quadrant rotor-side variable frequency device, makes generated output power arrive rated output power.
Described double-fed generator is to dragging temperature-rise test device, including two by the joining double-fed generator of shaft coupling 15, wherein one be used as pull-over gear, another be used as electromotor, also include 0 ~ 10kV pressure regulator 3, rotor-side variable frequency device (including pull-over gear four-quadrant rotor-side variable frequency device 7 and electromotor four-quadrant rotor-side variable frequency device 8), grid-connected bus 4 and be used for driving the auxiliary motor 16 of shaft coupling；Described grid-connected bus connects 10kV ac bus 1 by 0 ~ 10kV pressure regulator；The stator coil (including pull-over gear stator coil 13, electricity generator stator coil 17) of described double-fed generator connects grid-connected bus, pull-over gear rotor coil 14 and electric generator rotor coil 18 and connects grid-connected bus respectively through pull-over gear four-quadrant rotor-side variable frequency device and electromotor four-quadrant rotor-side variable frequency device.Described pull-over gear four-quadrant rotor-side variable frequency device and electromotor four-quadrant rotor-side variable frequency device are respectively intended to the rotor of rotor and the electromotor controlling pull-over gear.
High-voltage switch circuit breaker 2 it is connected between pressure regulator and power supply grid.It is respectively connected with switch disconnector, including the switch disconnector 39 being connected between pull-over gear stator coil 13 and grid-connected bus, the switch disconnector 5 11 being connected between switch disconnector 1 and switch disconnector 4 10, electricity generator stator coil 17 and the grid-connected bus at pull-over gear four-quadrant rotor-side variable frequency device two ends, the switch disconnector 26 being connected to pull-over gear four-quadrant rotor-side variable frequency device two ends and switch disconnector 6 12 between the two ends of rotor-side variable frequency device, stator coil and grid-connected bus.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., be all contained within protection scope of the present invention.
Claims (1)
1. a double-fed generator is to dragging temperature-raising experimental method, it is characterised in that adopts two double-fed generators to be in together under double-fed pattern and runs；Adopt auxiliary motor that shaft coupling is driven；By pull-over gear rotor-side variable frequency device, the rotor of one double-fed generator is controlled, makes this double-fed generator be in electro dynamic and run；By generator amature converter, the rotor of another double-fed generator is controlled, makes another double-fed generator be in generating state and run；
Carry out grid-connected after double-fed generator rotating speed arrives grid-connected rotating speed；The stator of two rotor-side variable frequency devices and two double-fed generators is connected to same power supply grid, and the voltage of described power supply grid is adjusted by pressure regulator；
Described double-fed generator comprises the steps: dragging temperature-raising experimental method
A, provide the primary voltage of doubly-fed generation machine stator grid-connected voltage and rotor-side variable frequency device through pressure regulator to grid-connected bus from power supply grid；
B, dragged shaft coupling by auxiliary motor so that it is rotating speed arrives the grid-connected rotating speed of double-fed generator；Respectively two double-fed generators are carried out grid-connected debugging, checks that whether phase sequence is consistent with electrical network；
C, a selected double-fed generator are pull-over gear, carry out grid-connected, regulate pull-over gear rotor-side variable frequency device, make this double-fed generator be in electro dynamic；
D, another double-fed generator selected are electromotor, carry out grid-connected, and regulator generator rotor-side variable frequency device makes this double-fed generator be in generating state；
E, until two double-fed generators to when dragging stable, auxiliary motor out of service；
F, adjustment pull-over gear rotor-side variable frequency device, make pull-over gear rotating speed arrive the specified running speed of double-fed generator；
G, regulator generator rotor-side variable frequency device, make generated output power arrive rated output power；
Described power supply grid is 10kV power supply grid；Described pull-over gear rotor-side variable frequency device and generator amature converter are four-quadrant frequency converter；
Described auxiliary electric acc power is more than the rated no-load mechanical loss sum of two double-fed generators；
Described auxiliary motor rated speed is more than 80% synchronous rotational speed of double-fed generator.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104076282A (en) * | 2014-07-16 | 2014-10-01 | 湘潭电机股份有限公司 | Temperature rise test method and device of double-winding permanent magnet wind-driven generator |
| CN104267347A (en) * | 2014-09-24 | 2015-01-07 | 无锡新大力电机有限公司 | Motor energy-saving and temperature-rising test device and method |
| CN104865443B (en) * | 2015-05-12 | 2017-12-26 | 株洲南车时代电气股份有限公司 | The automatic measurement system and its method of work of motor hot resistance |
| CN107085185A (en) * | 2017-05-15 | 2017-08-22 | 中车株洲电机有限公司 | A kind of motor temperature-raising experiment device |
| CN112881911B (en) * | 2021-01-27 | 2022-09-09 | 哈动国家水力发电设备工程技术研究中心有限公司 | Variable-speed double-fed motor testing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200986584Y (en) * | 2006-12-19 | 2007-12-05 | 谢步明 | Power configuration for dual-electric motor coaxial dragging test system |
| RU2354984C1 (en) * | 2007-10-16 | 2009-05-10 | Открытое акционерное общество "Российские железные дороги" (ОАО "РЖД") | Station for testing electric machines |
| CN201259529Y (en) * | 2008-08-27 | 2009-06-17 | 华锐风电科技有限公司 | 60HZ electric grid MW grade wind generating set experiment platform |
| CN201331570Y (en) * | 2008-12-24 | 2009-10-21 | 华锐风电科技有限公司 | 60 Hz double feed asynchronous generator testing system in 50 Hz electric fence |
| CN201885875U (en) * | 2010-12-10 | 2011-06-29 | 福建南电股份有限公司 | Test unit for megawatt double-fed wind generators |
| CN102288913A (en) * | 2011-08-12 | 2011-12-21 | 大连华锐股份有限公司 | Testing system for double-fed motor and testing method thereof |
| CN203117392U (en) * | 2013-02-05 | 2013-08-07 | 安徽中家智锐科技有限公司 | Motor back-to-back test platform for motor tests |
-
2013
- 2013-12-17 CN CN201310691230.2A patent/CN103630838B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200986584Y (en) * | 2006-12-19 | 2007-12-05 | 谢步明 | Power configuration for dual-electric motor coaxial dragging test system |
| RU2354984C1 (en) * | 2007-10-16 | 2009-05-10 | Открытое акционерное общество "Российские железные дороги" (ОАО "РЖД") | Station for testing electric machines |
| CN201259529Y (en) * | 2008-08-27 | 2009-06-17 | 华锐风电科技有限公司 | 60HZ electric grid MW grade wind generating set experiment platform |
| CN201331570Y (en) * | 2008-12-24 | 2009-10-21 | 华锐风电科技有限公司 | 60 Hz double feed asynchronous generator testing system in 50 Hz electric fence |
| CN201885875U (en) * | 2010-12-10 | 2011-06-29 | 福建南电股份有限公司 | Test unit for megawatt double-fed wind generators |
| CN102288913A (en) * | 2011-08-12 | 2011-12-21 | 大连华锐股份有限公司 | Testing system for double-fed motor and testing method thereof |
| CN203117392U (en) * | 2013-02-05 | 2013-08-07 | 安徽中家智锐科技有限公司 | Motor back-to-back test platform for motor tests |
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