CN206272223U - Generator rotor de-excitation and over-pressure safety device - Google Patents
Generator rotor de-excitation and over-pressure safety device Download PDFInfo
- Publication number
- CN206272223U CN206272223U CN201620445912.4U CN201620445912U CN206272223U CN 206272223 U CN206272223 U CN 206272223U CN 201620445912 U CN201620445912 U CN 201620445912U CN 206272223 U CN206272223 U CN 206272223U
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- Prior art keywords
- resistance
- demagnetization
- nonlinear
- metal linear
- excitation
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- Control Of Eletrric Generators (AREA)
Abstract
The utility model is related to a kind of generator rotor de-excitation and over-pressure safety device, including the degaussing switch set positioned at device two ends（FMK）, protective resistance（RD）, metal linear resistance（R1）, demagnetization nonlinear resistance（FR1）, diode（D1）, rotor windings（LQ）, described protective resistance（RD）With demagnetization nonlinear resistance（FR1）Series connection, described metal linear resistance（R1）It is parallel to protective resistance（RD）With demagnetization nonlinear resistance（FR1）The two ends of cascaded structure, diode（D1）Differential concatenation is in metal linear resistance（R1）With demagnetization nonlinear resistance（FR1）Parallel-connection structure on.The utility model can solve the aging too fast problem of demagnetization nonlinear resistance, and not influence the normal function of demagnetization nonlinear resistance.
Description
Technical field
The utility model is related to generator rotor de-excitation and over-voltage protection technology field, and in particular to a kind of generator amature
Demagnetization and over-pressure safety device.
Background technology
Engine rotor demagnetization is that degaussing switch is accessed in energized circuit, and on the normally closed interlock of degaussing switch and is connect
De-excitation resistance, when demagnetization is tripped, to consume the energy of rotor loop, so that generator voltage drops quickly to zero.Overvoltage
Protection is generator when voltage rises too high in removal of load, the protection device of tripping operation demagnetization shutdown.
Due to eliminating magnetism of generator device use znr in putting into operation Chang Yinwei bear excitation fortune
Row voltage and occur that nonlinear resistance is aging too fast, cause the defect that service life is short.
The content of the invention
The utility model purpose is to provide a kind of generator rotor de-excitation and over-pressure safety device, can solve demagnetization non-thread
The aging too fast problem of property resistance, and the normal function of demagnetization nonlinear resistance is not influenceed.
In order to realize the above object the technical solution adopted in the utility model is：A kind of generator rotor de-excitation and overvoltage
Protection device, including the degaussing switch FMK, protective resistance RD, metal linear resistance R1, demagnetization non-thread set positioned at device two ends
Property resistance FR1, diode D1, rotor windings LQ, described protective resistance RD connects with demagnetization nonlinear resistance FR1, described
Metal linear resistance R1 is parallel to the two ends of protective resistance RD and demagnetization nonlinear resistance FR1 cascaded structures, and diode D1 is reverse
It is series on the parallel-connection structure of metal linear resistance R1 and demagnetization nonlinear resistance FR1.
Further, the resistance of metal linear resistance R1 is 103Ohm.Described diode D1 is the pole of high power laser two
Pipe.
It is of the present utility model to have technical effect that：It is anti-aging, suitable long-term charging operation using metal linear resistance R1
Feature, demagnetization nonlinear resistance FR1 two ends are connected in parallel on by metal linear resistance R1, connect one after two kinds of resistance R1, FR1 parallel connections again
Only reversely couple diode D1, the resistance of demagnetization nonlinear resistance FR1 is larger during due to normal operation, about 106Ohm, and select
Metal linear resistance R1 resistances are 103Ohm, resistance is less than 10 after both R1, FR1 parallel connection3Ohm, and reverse two for connecting
The reverse resistance of pole pipe D1 is also for about 106Ohm, metal linear resistance R1 resistances and demagnetization nonlinear resistance FR1 during normal operation
Total resistance is about the one thousandth of the reverse resistances of backward dioded D1 after parallel connection, and excitation voltage is all applied to substantially when so running
On backward dioded D1, diode D1 will not occur aging.And when alternator failure, it is necessary to during demagnetization, now demagnetization is non-
Linear resistance FR1 is acted, after nonlinear resistance action, the nonlinear characteristic of itself, demagnetization nonlinear resistance FR1 itself
Resistance will be less than 1 ohm.Most current during demagnetization is circulated by nonlinear resistance, and rotor energy is inhaled by nonlinear resistance
Receive, it is ensured that the safety of generating set.Nonlinear resistance had so both been protected not occur because bearing working voltage for a long time old
Change, again can in generator accident reliable absorbtion rotor energy, realize the demagnetization function of generator.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Specific embodiment
Referring to the drawings, a kind of generator rotor de-excitation and over-pressure safety device, including including setting positioned at device two ends
Degaussing switch FMK, protective resistance RD, metal linear resistance R1, demagnetization nonlinear resistance FR1, diode D1, rotor windings LQ,
Described protective resistance RD connects with demagnetization nonlinear resistance FR1, described metal linear resistance R1 be parallel to shield resistance RD with
The two ends of demagnetization nonlinear resistance FR1 cascaded structures, diode D1 differential concatenations are non-linear with demagnetization in metal linear resistance R1
On the parallel-connection structure of resistance FR1.
Preferably, metal linear resistance（R1）Resistance be 103Ohm.Described diode（D1）It is high power laser two
Pole pipe.
Using metal linear resistance R1 is anti-aging, suitable long-term charging operation the characteristics of, metal linear resistance R1 is in parallel
Connect a reversely connection diode D1 again behind demagnetization nonlinear resistance FR1 two ends, two kinds of resistance R1, FR1 parallel connections, with reference to attached
Figure, the resistance of demagnetization nonlinear resistance FR1 is larger during due to normal operation, and about 106Ohm, and the metal linear resistance selected
R1 resistances are 103Ohm, resistance is less than 10 after both R1, FR1 parallel connection3Ohm, and the reverse resistance of the backward dioded D1 for connecting
Also it is for about 106Ohm, total resistance is about after metal linear resistance R1 resistances are in parallel with demagnetization nonlinear resistance FR1 during normal operation
The one thousandth of the reverse resistances of backward dioded D1, excitation voltage is all applied on backward dioded D1 substantially when so running,
Diode D1 will not occur aging.And when alternator failure, it is necessary to during demagnetization, now demagnetization nonlinear resistance FR1 actions,
After nonlinear resistance action, the nonlinear characteristic of itself, demagnetization nonlinear resistance FR1 itself resistances will be less than 1 ohm.
Most current during demagnetization is circulated by nonlinear resistance, and rotor energy is absorbed by nonlinear resistance, it is ensured that generating set
Safety.
Nonlinear resistance had so both been protected not occur because bearing working voltage for a long time aging, again can be in generator
Reliable absorbtion rotor energy during accident, realizes the demagnetization function of generator.
Additionally, protective resistance RD is trickle adjustable sense resistance, it is trickle adjustable that demagnetization nonlinear resistance FR1 connects
Protective resistance RD plays a part of to adjust the demagnetization nonlinear resistance FR1 resistances in parallel with metal linear resistance R1, it is ensured that metal
Linear resistance resistance is 103The accurate selection of ohm.
Claims (3)
1. a kind of generator rotor de-excitation and over-pressure safety device, it is characterised in that：Including the demagnetization set positioned at device two ends
Switch（FMK）, protective resistance（RD）, metal linear resistance（R1）, demagnetization nonlinear resistance（FR1）, diode（D1）, rotor
Winding（LQ）, described protective resistance（RD）With demagnetization nonlinear resistance（FR1）Series connection, described metal linear resistance（R1）And
It is coupled to protective resistance（RD）With demagnetization nonlinear resistance（FR1）The two ends of cascaded structure, diode（D1）Differential concatenation is in metal
Linear resistance（R1）With demagnetization nonlinear resistance（FR1）Parallel-connection structure on.
2. generator rotor de-excitation according to claim 1 and over-pressure safety device, it is characterised in that：Metal linear resistance
（R1）Resistance be 103Ohm.
3. generator rotor de-excitation according to claim 1 and over-pressure safety device, it is characterised in that：Described diode
（D1）It is high power laser diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620445912.4U CN206272223U (en) | 2016-05-17 | 2016-05-17 | Generator rotor de-excitation and over-pressure safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620445912.4U CN206272223U (en) | 2016-05-17 | 2016-05-17 | Generator rotor de-excitation and over-pressure safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206272223U true CN206272223U (en) | 2017-06-20 |
Family
ID=59035637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620445912.4U Expired - Fee Related CN206272223U (en) | 2016-05-17 | 2016-05-17 | Generator rotor de-excitation and over-pressure safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206272223U (en) |
-
2016
- 2016-05-17 CN CN201620445912.4U patent/CN206272223U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 Termination date: 20190517 |