CN106655933A - High-voltage grid-connected excitation system - Google Patents
High-voltage grid-connected excitation system Download PDFInfo
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- CN106655933A CN106655933A CN201611099542.4A CN201611099542A CN106655933A CN 106655933 A CN106655933 A CN 106655933A CN 201611099542 A CN201611099542 A CN 201611099542A CN 106655933 A CN106655933 A CN 106655933A
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- excitation
- excitation system
- merging
- high pressure
- generates electricity
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- 230000005284 excitation Effects 0.000 title claims abstract description 137
- 230000005611 electricity Effects 0.000 claims description 37
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 11
- 230000008859 change Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000001012 protector Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
- H02P9/30—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
- H02P9/305—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices controlling voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/06—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/20—Structural association with auxiliary dynamo-electric machines, e.g. with electric starter motors or exciters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a high-voltage grid-connected excitation system. The high-voltage grid-connected excitation system comprises an excitation cabinet and an excitation system main circuit, wherein the excitation cabinet is used for carrying out switching-on and switching-off control on the excitation system main circuit and is further used for adjusting the excitation current of the excitation system; the input end of an excitation adjuster is connected to a voltage mutual inductor PT and a current mutual inductor CT at a generator end respectively; the output end of the excitation adjuster is connected to the excitation system main circuit; the excitation system main circuit specifically comprises a primary road circuit and a plurality of branch road circuits; and the primary road circuit is serially connected with a magnetic blow-out switch, a magnetic blow-out resistor, a demagnetizing resistor and an undercurrent relay. The high-voltage grid-connected excitation system provided by the invention has the technical advantages of many aspects such as high reliability and high equipment safety.
Description
Technical field
The present invention relates to electrical equipment technical field, more particularly to a kind of high pressure generates electricity by way of merging two or more grid systems excitation system.
Background technology
It is well known that in general Gas Turbine Generating Units are mainly by gas turbine, generator, excitation system, shaft coupling
The structures such as the main support of section, base, gas turbine, Auxiliary support and control system are constituted.
In Gas Turbine Generating Units, gas turbine is prime mover, and using the combustion gas being pressurized fuel is made, in combustion gas wheel
Work by combustion in machine, the electrical power generators dragged by it.Gas turbine discharges substantial amounts of high-temperature flue gas, cigarette while generating electricity
Gas introduces waste heat boiler by discharge duct, reclaims most of heat to produce steam, steam for heating or steam turbine power generation or
It is used for other purposes.
The synchronous generator of fuel engine power generation unit is one of the capital equipment in power station, coaxial with gas turbine and exciter
In common base, it is rotated by gas turbine, the mechanical energy that combustion engine is transmitted is converted into electric energy, so as to realize power station
The purpose of generating.Specifically, generator is associated by shaft coupling and is rotated by it, by corresponding excitation system
Unite to generator plus exciting current, generator just can transform mechanical energy into electricity, i.e., generator sends electric energy.
But, unfortunately, excitation system structure is relatively simple in prior art, and it lacks necessary electrical equipment protection,
Reliability is poor.
The content of the invention
The excitation system it is an object of the invention to provide a kind of high pressure generates electricity by way of merging two or more grid systems, to solve the above problems.
In order to achieve the above object, the technical scheme is that what is be achieved in that：
The excitation system the invention provides a kind of high pressure generates electricity by way of merging two or more grid systems, including excitation cubicle and excitation system major loop and encourage
Magnestat 1；
Wherein, it is connected with the excitation cubicle on the excitation system major loop；The excitation cubicle is used for the excitation system
System major loop carries out connecting and disconnecting control, is additionally operable to be adjusted excitation system exciting current；
The input of the field regulator 1 connects respectively the terminal voltage transformer PT summation current transformer CT of generator 6；Institute
State the output end connection excitation system major loop of field regulator 1；The excitation system major loop specifically includes a main line electricity
Road and a plurality of subcircuits；Degaussing switch 2, de-excitation resistance 3 are sequentially connected in series on the main line circuit, have subtracted magneto-resistor 4
With undercurrent relay 5；Exciter 7 is connected with wherein one subcircuits；Control is connected with wherein another subcircuits
Switch 8.
Preferably, can embodiment as one kind；The field regulator 1, the degaussing switch 2, the de-excitation resistance
3rd, the magneto-resistor 4, the undercurrent relay 5 of subtracting is respectively mounted and is arranged in excitation cubicle.
Preferably, can embodiment as one kind；The output end of the field regulator 1 is specifically connected in described subtracting in parallel
The two ends of magneto-resistor 4.
Preferably, can embodiment as one kind；The field regulator 1 be used for by the conducting of controllable silicon transistor and
Turn off to adjust the exciting current of the exciter 7, so as to adjust the output current of exciter 7, carry out realizing regulator generator 6
Exciting current.
Preferably, can embodiment as one kind；The degaussing switch 2 is used to that institute to be closed and cut-off under on-load state
State the exciting current of excitation system major loop.
Preferably, can embodiment as one kind；The de-excitation resistance 3 is used for when excitation system is by the excitation operation that generates electricity
When state switchs to degaussing switch disconnection, the remaining electromagnetic energy of electric generator rotor coil and exciter coil is consumed.
Preferably, can embodiment as one kind；The magneto-resistor 4 that subtracts for when when generator overvoltage, short circuit its
The contact at two ends disconnects so as to directly concatenate into exciter excitation loop.
Preferably, can embodiment as one kind；The undercurrent relay 5 is used to be returned in the excitation system master when generator
When road exciting current is decreased to less than permissible value, its contact action sends the shutdown of excitation undercurrent signal protection.
Preferably, can embodiment as one kind；The controlling switch 8 is specially overvoltage protection switch.
Preferably, can embodiment as one kind；The controlling switch 8 is specially overcurrent protective switch.
Compared with prior art, this have the advantage that：
A kind of high pressure that the present invention is provided generates electricity by way of merging two or more grid systems excitation system, including excitation cubicle and excitation system major loop and encourages
Magnestat 1；
Wherein, it is connected with the excitation cubicle on the excitation system major loop；The excitation cubicle is used for the excitation system
System major loop carries out connecting and disconnecting control, is additionally operable to be adjusted excitation system exciting current；
The input of the field regulator 1 connects respectively the terminal voltage transformer PT summation current transformer CT of generator 6；Institute
State the output end connection excitation system major loop of field regulator 1；The excitation system major loop specifically includes a main line electricity
Road and a plurality of subcircuits；Degaussing switch 2, de-excitation resistance 3 are sequentially connected in series on the main line circuit, have subtracted magneto-resistor 4
With undercurrent relay 5；Exciter 7 is connected with wherein one subcircuits.
To sum up, the high pressure that the present invention is provided generates electricity by way of merging two or more grid systems excitation system, its devise the more preferable excitation cubicle of security performance with
And excitation system major loop；Wherein, design and installation degaussing switch 2, de-excitation resistance 3 on the excitation system major loop, subtract magnetic
Resistance 4 and undercurrent relay 5；Above-mentioned electric elements can be implemented to protect from many aspects to excitation system major loop, it is ensured that high
Press the safety and stability of excitation system of generating electricity by way of merging two or more grid systems.
Therefore, the high pressure that the present invention is provided generates electricity by way of merging two or more grid systems excitation system, with reliability it is high, that device security is good etc. is many
The technical advantage of aspect.
Description of the drawings
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to concrete
The accompanying drawing to be used needed for embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is that high pressure provided in an embodiment of the present invention generates electricity by way of merging two or more grid systems the theory structure schematic diagram of excitation system；
Fig. 2 generates electricity by way of merging two or more grid systems excitation system concrete principle structural representation for the high pressure provided in an embodiment of the present invention of Fig. 1；
Description of reference numerals：
Field regulator 1；
Degaussing switch 2；
De-excitation resistance 3；
Subtract magneto-resistor 4；
Undercurrent relay 5；
Generator 6；
Exciter 7；
Controlling switch 8.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described enforcement
Example is a part of embodiment of the invention, rather than the embodiment of whole.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outward " be based on orientation shown in the drawings or position relationship, merely to
Be easy to description the present invention and simplify description, rather than indicate or imply indication device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Below by specific embodiment and combine accompanying drawing the present invention is described in further detail.
Referring to Fig. 1 and Fig. 2, a kind of high pressure provided in an embodiment of the present invention generates electricity by way of merging two or more grid systems excitation system, including excitation cubicle with
And excitation system major loop and field regulator 1；
Wherein, it is connected with the excitation cubicle on the excitation system major loop；The excitation cubicle is used for the excitation system
System major loop carries out connecting and disconnecting control, is additionally operable to be adjusted excitation system exciting current；
The input of the field regulator 1 connects respectively the terminal voltage transformer PT summation current transformer CT of generator 6；Institute
State the output end connection excitation system major loop of field regulator 1；The excitation system major loop specifically includes a main line electricity
Road and a plurality of subcircuits；Degaussing switch 2, de-excitation resistance 3 are sequentially connected in series on the main line circuit, have subtracted magneto-resistor 4
With undercurrent relay 5；Exciter 7 is connected with wherein one subcircuits；
The field regulator 1, the degaussing switch 2, the de-excitation resistance 3, it is described subtract magneto-resistor 4, the undercurrent after
Electrical equipment 5 is respectively mounted and is arranged in excitation cubicle.
The concrete structure and particular technique effect of excitation system of generating electricity by way of merging two or more grid systems to the high pressure that the present invention is provided below does one
Lower detailed description：
In normal operation, the change of exciter current of generator mainly affects voltage level and the parallel connection of electrical network for power system
The distribution of reactive power between operating unit.Excellent excitation system not only can ensure generator reliability service, there is provided qualified
Electric energy, but also can effectively improve the technical indicator of system.The task of excitation system is as follows：First, stable generator outlet electricity
Pressure.2nd, the equilibrium assignment of reactive power is controlled.3rd, the stability of synchronous generator parallel running is improved.
The exciting current of synchronous generator is substantially by a controllable direct-current power supply, taking according to exciting current
The difference of the method for obtaining, the form of excitation system has various, and the most frequently used has DC exciter excitation system, AC exciter excitation
System and static excitation system etc..
Fuel engine power generation unit adopts DC exciter excitation system according to its equipment feature, and Fig. 1 is gas turbine powered generator
The excitation system principle schematic of group.Exciting current in generator amature winding is supplied by special DC exciter, direct current
Exciter is self-excitation type dc generator, and it is rotated in the lump with generator coaxle by engine spindle；Adjustment adjustment of field excitation
Device can change the self-excitation electric current of exciter, so as to change the output voltage of exciter, and then reach adjustment exciter current of generator
Purpose, realize adjustment to generator voltage (idle).
In the inventive solutions, excitation cubicle has been the main field element to excitation system control and corrective action
Integrated switch board, its major function be connecting and disconnecting control is carried out to excitation system major loop, to excitation system excitation
Electric current is adjusted, excitation system irregular operating and failure condition is monitored.Cabinet is opened built with field regulator, demagnetization
Pass, de-excitation resistance, subtract the elements such as magneto-resistor, undercurrent relay.
Main electricity in the excitation cubicle for generating electricity by way of merging two or more grid systems in excitation system structure to high pressure provided in an embodiment of the present invention below
Gas element is described in detail：
Preferably, can embodiment as one kind；The output end of the field regulator 1 is specifically connected in described subtracting in parallel
The two ends of magneto-resistor 4.
Preferably, can embodiment as one kind；The field regulator 1 be used for by the conducting of controllable silicon transistor and
Turn off to adjust the exciting current of the exciter, so as to adjust the output current of exciter, carry out realizing that regulator generator is encouraged
Magnetoelectricity stream.
Preferably, can embodiment as one kind；The degaussing switch 2 is used to that institute to be closed and cut-off under on-load state
State the exciting current of excitation system major loop.
Preferably, can embodiment as one kind；The de-excitation resistance 3 is used for when excitation system is by the excitation operation that generates electricity
When state switchs to degaussing switch disconnection, the remaining electromagnetic energy of electric generator rotor coil and exciter coil is consumed.
Preferably, can embodiment as one kind；The magneto-resistor 4 that subtracts for when when generator overvoltage, short circuit its
The contact at two ends disconnects so as to directly concatenate into exciter excitation loop.
Preferably, can embodiment as one kind；The undercurrent relay 5 is used to be returned in the excitation system master when generator
When road exciting current is decreased to less than permissible value, its contact action sends the shutdown of excitation undercurrent signal protection.
In above-mentioned technical proposal, the explanation of explanation is needed, the effect of above-mentioned field regulator 1 is by can
The conducting of control silicon transistor adjusts the exciting current of exciter with shut-off, so as to adjust the output current of exciter, reaches tune
The purpose of section exciter current of generator.Operation principle block diagram such as Fig. 2.
As shown in Fig. 2 about the operation principle block diagram of field regulator 1：It is field regulator portion in double dot dash line in Fig. 2
Point, voltage, the change of current signal Jing reactive currents measuring unit come by generator voltage transformer PT summation current transformers CT
Change and calculate unit calculating with reactive current, obtain generator voltage and reactive current respective value UC and IW.Calculated by adjusting difference
Unit enforcement tune difference calculates output and compares with UC and given voltage Ug, and (δ is tune difference system to obtain deviation e=Ug-UC- δ IW
Number), the purpose that PID is adjusted is to make e tend to 0.Result of calculation, the modulation of microcomputer output pulse width are implemented according to PID computing units
Pulse, makes controllable silicon turn on sometimes, ends sometimes, changes the dutycycle of pwm pulses, you can excitation is flow through in change
The average current of machine magnet exciting coil, so as to adjust the output current of exciter, reaches the purpose of regulator generator exciting current.
The effect of degaussing switch 2 is the exciting current that can close and cut-off excitation system major loop under on-load state,
Can quickly and reliably be closed according to control instruction in normal operation or failure or cut-off excitation main circuit, be encouraged so as to reach
The purpose that magnetic system is controlled and protected.
The effect of de-excitation resistance 3 is, when excitation system switchs to degaussing switch disconnection by the excitation running status that generates electricity, to disappear
Consumption electric generator rotor coil and exciter coil remaining electromagnetic energy, so as to prevent electric generator rotor coil and exciter coil by
Overvoltage is produced in being sudden shut off current loop, coil is damaged.
The effect for subtracting magneto-resistor 4 is that, when generator overvoltage, the contact at its two ends of short circuit disconnects so as to directly concatenate into
Exciter excitation loop, so as to increase the resistance in exciter excitation loop, reduces the exciting current of exciter, and then reduction is sent out
Motor energization current, quickly reduces generator voltage.
The coil of undercurrent relay 5 is directly serially connected in excitation main circuit, and its effect is when generator excitation major loop is encouraged
When magnetoelectricity stream is decreased to less than permissible value, its contact action sends excitation undercurrent signal, and protection is shut down.
Preferably, can embodiment as one kind；Controlling switch 8 is connected with wherein one subcircuits.
Preferably, can embodiment as one kind；The controlling switch be specially overvoltage protection switch, pressure-failure protector or
Overcurrent protective switch.
It should be noted that the electrical equipment of above-mentioned excitation main circuit most to avoid line voltage when in use too high too low, all
Need the rated voltage of a zone of reasonableness.Beyond the dielectric strength and pressure voltage of electrical equipment if beyond this voltage,
Therefore electrical equipment can generate heat, puncture and burn out even on fire.Overtension is too low to cause electrical equipment to be burned；Therefore above-mentioned mistake has been installed additional
Pressure protection switch (i.e. overvoltage protector), pressure-failure protector (also known as Protector for electric appliance), to prevent above-mentioned potential safety hazard.Together
When, in order to avoid electric current it is too high, it is also possible to select install overcurrent protective switch (i.e. overcurrent protector)
High pressure provided in an embodiment of the present invention excitation system of generating electricity by way of merging two or more grid systems has the technical advantage of following aspect：
High pressure provided in an embodiment of the present invention generates electricity by way of merging two or more grid systems excitation system, its devise the more preferable excitation cubicle of security performance with
And excitation system major loop；Wherein, design and installation degaussing switch, de-excitation resistance on the excitation system major loop, subtract magnetoelectricity
Resistance and undercurrent relay；Above-mentioned electric elements can be implemented to protect from many aspects to excitation system major loop, it is ensured that high pressure is simultaneously
The safety and stability of net generating excitation system.
Therefore, the high pressure that the present invention is provided generates electricity by way of merging two or more grid systems excitation system, with reliability it is high, that device security is good etc. is many
The technical advantage of aspect.
Finally it should be noted that：Various embodiments above only to illustrate technical scheme, rather than a limitation；To the greatest extent
Pipe has been described in detail with reference to foregoing embodiments to the present invention, it will be understood by those within the art that：Its according to
So the technical scheme described in foregoing embodiments can be modified, either which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, do not make the essence disengaging various embodiments of the present invention technology of appropriate technical solution
The scope of scheme.
Claims (10)
1. a kind of high pressure generates electricity by way of merging two or more grid systems excitation system, it is characterised in that including excitation cubicle and excitation system major loop and excitation
Adjuster (1)；
Wherein, it is connected with the excitation cubicle on the excitation system major loop；The excitation cubicle is used for the excitation system master
Loop carries out connecting and disconnecting control, is additionally operable to be adjusted excitation system exciting current；
The input of the field regulator (1) connects respectively generator (6) terminal voltage transformer PT summation current transformer CT；Institute
State the output end connection excitation system major loop of field regulator (1)；The excitation system major loop specifically includes a main line
Circuit and a plurality of subcircuits；Degaussing switch (2), de-excitation resistance (3) are sequentially connected in series on the main line circuit, have subtracted magnetic
Resistance (4) and undercurrent relay (5)；Exciter (7) is connected with wherein one subcircuits；In wherein another subcircuits
It is connected with controlling switch (8).
2. high pressure as claimed in claim 1 generates electricity by way of merging two or more grid systems excitation system, it is characterised in that
The field regulator (1), the degaussing switch (2), the de-excitation resistance (3), it is described subtract magneto-resistor (4), it is described owe
Current relay (5) is respectively mounted and is arranged in excitation cubicle.
3. high pressure as claimed in claim 2 generates electricity by way of merging two or more grid systems excitation system, it is characterised in that
The output end of the field regulator (1) is specifically connected in the two ends for subtracting magneto-resistor (4) in parallel.
4. high pressure as claimed in claim 3 generates electricity by way of merging two or more grid systems excitation system, it is characterised in that
The field regulator (1) for by the conducting of controllable silicon transistor with shut-off adjusting encouraging for the exciter (7)
Magnetoelectricity stream, so as to adjust the output current of exciter (7), carries out realizing regulator generator (6) exciting current.
5. high pressure as claimed in claim 4 generates electricity by way of merging two or more grid systems excitation system, it is characterised in that
The degaussing switch (2) under on-load state for closing and cut-off the exciting current of the excitation system major loop.
6. high pressure as claimed in claim 5 generates electricity by way of merging two or more grid systems excitation system, it is characterised in that
The de-excitation resistance (3) for when excitation system by the excitation running status that generates electricity switch to degaussing switch disconnect when, consume
The remaining electromagnetic energy of electric generator rotor coil and exciter coil.
7. high pressure as claimed in claim 6 generates electricity by way of merging two or more grid systems excitation system, it is characterised in that
Described to subtract magneto-resistor (4) for when when generator overvoltage, the contact at its two ends of short circuit disconnects so as to directly concatenate into
Exciter excitation loop.
8. high pressure as claimed in claim 7 generates electricity by way of merging two or more grid systems excitation system, it is characterised in that
The undercurrent relay (5) for when generator (6) excitation system major loop exciting current be decreased to less than allow
During value, its contact action sends the shutdown of excitation undercurrent signal protection.
9. high pressure as claimed in claim 1 generates electricity by way of merging two or more grid systems excitation system, it is characterised in that
The controlling switch (8) is specially overvoltage protection switch.
10. high pressure as claimed in claim 9 generates electricity by way of merging two or more grid systems excitation system, it is characterised in that
The controlling switch (8) is specially overcurrent protective switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611099542.4A CN106655933A (en) | 2016-12-02 | 2016-12-02 | High-voltage grid-connected excitation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611099542.4A CN106655933A (en) | 2016-12-02 | 2016-12-02 | High-voltage grid-connected excitation system |
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| Publication Number | Publication Date |
|---|---|
| CN106655933A true CN106655933A (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611099542.4A Pending CN106655933A (en) | 2016-12-02 | 2016-12-02 | High-voltage grid-connected excitation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378809A (en) * | 2018-11-12 | 2019-02-22 | 株洲航发动科南方燃气轮机有限公司 | Generator excitation protects circuit and generator excitation to protect system |
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| 姜维义: ""电力系统稳定与自动励磁调节器第三章"", 《水电机电安装技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378809A (en) * | 2018-11-12 | 2019-02-22 | 株洲航发动科南方燃气轮机有限公司 | Generator excitation protects circuit and generator excitation to protect system |
| CN109378809B (en) * | 2018-11-12 | 2020-05-15 | 株洲航发动科南方燃气轮机有限公司 | Generator excitation protection circuit and generator excitation protection system |
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Application publication date: 20170510 |