CN109412175A - A kind of double axis excitation device of synchronous capacitor - Google Patents
A kind of double axis excitation device of synchronous capacitor Download PDFInfo
- Publication number
- CN109412175A CN109412175A CN201811531328.0A CN201811531328A CN109412175A CN 109412175 A CN109412175 A CN 109412175A CN 201811531328 A CN201811531328 A CN 201811531328A CN 109412175 A CN109412175 A CN 109412175A
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- circuit
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- axis
- input terminal
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- 230000005284 excitation Effects 0.000 title claims abstract description 50
- 239000003990 capacitor Substances 0.000 title abstract description 6
- 230000001360 synchronised effect Effects 0.000 title abstract description 6
- 239000003607 modifier Substances 0.000 claims abstract description 44
- 238000004804 winding Methods 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 14
- 230000005611 electricity Effects 0.000 claims description 7
- 230000006698 induction Effects 0.000 claims 1
- 230000003068 static effect Effects 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000010977 unit operation Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1885—Arrangements for adjusting, eliminating or compensating reactive power in networks using rotating means, e.g. synchronous generators
-
- 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
- H02P9/006—Means for protecting the generator by using control
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
The invention discloses a kind of double axis excitation devices of synchronous capacitor, comprising: reactive power calculates device, and voltage transformer and current transformer are respectively connected to the voltage and current input terminal that reactive power calculates device；Comparison circuit, the output end that reactive power calculates device are connected to the measurement input terminal of comparison circuit, give the power input of reactive power circuit connection to comparison circuit；Low to encourage protection circuit, the output end of comparison circuit is connected to the low input terminal for encouraging protection circuit, and the low output end for encouraging protection circuit is connected to the control signal of control circuit；Control circuit, voltage transformer are connected to the measurement input terminal of control circuit, the voltage input end of given voltage circuit connection to control circuit, and the output end of control circuit is connected to the pressure difference input terminal of q axis field regulator；Q axis field regulator, the given input terminal of given voltage circuit connection to q axis field regulator, the output end of q axis field regulator are connected to q axis excitation winding.The excitation unit can be avoided when phase modifier excessively into phase when caused end-heating and unit generator rotor angle increase problem, to guarantee the static stability of unit operation.
Description
Technical field
The present invention relates to a kind of double axis excitation devices of synchronous capacitor.
Background technique
Without mechanical load on rotor when synchronous capacitor is run, motor inside is converted without active power, with external world master
Carry out the exchange of reactive power.Synchronous capacitor as reactive-load compensation equipment, dynamic characteristic and in terms of have it is prominent
Advantage out is widely used in the fields such as extra-high voltage direct-current transmission engineering.But phase modifier excessively draws generator end into meeting
Fever excessively damages overhang insulation because generating heat into meeting for a long time.Meanwhile increasing into the mutually too deep unit generator rotor angle that also results in, pole
It will lead to unit in the case of end and lose static stability.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of double axis excitation device, which can be kept away
Exempt from when phase modifier excessively into phase when caused end-heating and unit generator rotor angle increase problem, to guarantee that the static state of unit operation is steady
It is qualitative.
A kind of technical solution provided by the invention are as follows: double axis excitation device of phase modifier, comprising:
Reactive power calculates device, and voltage transformer and current transformer are respectively connected to the electricity that the reactive power calculates device
Pressure and current input terminal；Comparison circuit, the output end that the reactive power calculates device are connected to the measurement of the comparison circuit
Input terminal gives the power input of reactive power circuit connection to the comparison circuit；Low to encourage protection circuit, the comparison is electric
The output end on road is connected to the low input terminal for encouraging protection circuit, and the low output end for encouraging protection circuit is connected to control electricity
The control signal on road；Control circuit, the voltage transformer are connected to the measurement input terminal of the control circuit, given voltage
For circuit connection to the voltage input end of the control circuit, the output end of the control circuit is connected to q axis field regulator
Pressure difference input terminal；
Q axis field regulator, the given input terminal of the given voltage circuit connection to the q axis field regulator, the q axis
The output end of field regulator is connected to q axis excitation winding.
Wherein, stator, the voltage transformer, the control circuit, the q axis field regulator, the q axis excitation around
Group is sequentially connected, and constitutes closed loop.
Preferably, the double axis excitation device of the phase modifier is provided on the rotor of the phase modifier in d, q axis direction
Orthogonal two excitation windings, the brush of commutator and commutator cooperation, the excitation winding of the phase modifier pass through
The brush and the commutator obtain excitation voltage from the control circuit.
Preferably, the double axis excitation device of the phase modifier, described voltage sensor one end and the phase modifier go out
Mouth is connected, and the other end is connected by the control circuit with the q axis field regulator.
Preferably, the double axis excitation device of the phase modifier, the low protection circuit of encouraging is a diode, and anode connects
It is connected to the output end of the comparison circuit, cathode is connected to the control signal of the control circuit.
Preferably, the double axis excitation device of the phase modifier, the control circuit are a selector, control signal
It is connected to the low output end for encouraging protection circuit, measurement input terminal is connected to the voltage transformer, voltage input end
It is connected to the given voltage circuit.
The present invention is include at least the following beneficial effects: calculating device due to being provided with reactive power, comparison circuit is low to encourage guarantor
Protection circuit, control circuit, when phase modifier into it is mutually too deep be more than limitation when, it is low encourage protection circuit can output signal to control circuit,
Control circuit control terminal is set to high level, the voltage value of control circuit output measurement input terminal, q axis field regulator works,
The operation of phase modifier double axis excitation.To improve phase modifier into phase depth, phase modifier is protected not damage because of the motor overheating of end windings and parts
Insulation will not reduce the static stability of unit because unit generator rotor angle increases.Conversely, when phase modifier is not above into phase depth
When limitation, low protection circuit of encouraging will not output signal to control circuit, and control circuit control terminal is low level, control circuit output
The voltage value of voltage input end, q axis field regulator do not work, and phase modifier is only driven by d axis excitation winding, single shaft operation.Together
When, due to being provided with q axis field regulator, stator, the voltage transformer, the control circuit, the q axis adjustment of field excitation
Device, the q axis excitation winding are sequentially connected, and constitute closed loop, and the setting of q axis field regulator is realized to q axis excitation electricity
The accurate adjusting of pressure.
Further advantage, target and characteristic of the invention will be reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the excitation unit of phase modifier of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
The advantages of to make technical solution of the present invention, is clearer, makees specifically to the present invention with reference to the accompanying drawings and examples
It is bright.
As shown in Figure 1, the excitation unit of phase modifier provided in an embodiment of the present invention, comprising: reactive power calculates device 1,
Voltage transformer 2 and 3 device of Current Mutual Inductance are respectively connected to the voltage and current input terminal that the reactive power calculates device；Compare
Circuit 4, the output end that the reactive power calculates device are connected to the measurement input terminal of the comparison circuit, give reactive power
Circuit 5 is connected to the power input of the comparison circuit；Low to encourage protection circuit 6, the output end of the comparison circuit is connected to
The low input terminal for encouraging protection circuit, the low output end for encouraging protection circuit are connected to the control signal of control circuit 7；
Control circuit, the voltage transformer are connected to the measurement input terminal of the control circuit, and given voltage circuit 8 is connected to described
The voltage input end of control circuit, the output end of the control circuit are connected to the pressure difference input terminal of q axis field regulator 9；Q axis
Field regulator, the given input terminal of the given voltage circuit connection to the q axis field regulator, the q axis Excitation Adjustment
The output end of section device is connected to q axis excitation winding 10.
Calculate device due to being provided with reactive power, comparison circuit is low to encourage protection circuit, control circuit, when phase modifier into
Mutually too deep is more than when limiting, and low protection circuit of encouraging can output signal to control circuit, and control circuit control terminal is set to high level,
The voltage value of control circuit output measurement input terminal, the work of q axis field regulator, the operation of phase modifier double axis excitation.To improve
Phase modifier protects phase modifier not damage because of the motor overheating of end windings and parts and insulate into phase depth, will not be due to unit generator rotor angle increases
Reduce the static stability of unit.Conversely, low protection circuit of encouraging will not export when phase modifier is not above limitation into phase depth
For signal to control circuit, control circuit control terminal is low level, the voltage value of control circuit output voltage input terminal, q axis excitation
Adjuster does not work, and phase modifier is only driven by d axis excitation winding, single shaft operation.Simultaneously as it is provided with q axis field regulator,
Stator 11, the voltage transformer, the control circuit, the q axis field regulator, the q axis excitation winding are sequentially connected,
Closed loop is constituted, the setting of q axis field regulator realizes the accurate adjusting to q axis excitation voltage.
Further, the excitation unit of the phase modifier, the outlet phase of described voltage sensor one end and the phase modifier
Even, the other end is connected by the control circuit with the q axis field regulator.The setting of voltage transformer realizes q axis and encourages
The automatic adjustment of magnetoelectricity pressure is used to detect the stator voltage of phase modifier output, by control circuit, by control circuit output
Voltage value is compared with given voltage, difference is conveyed to q axis field regulator, and q axis field regulator is according to receiving
Voltage difference calculates the excitation voltage needed in energized circuit, and provides it to energized circuit.
Further, the excitation unit of the phase modifier, the low protection circuit of encouraging is a diode, and anode is connected to
The output end of the comparison circuit, cathode are connected to the control signal of the control circuit.Comparison circuit will be calculated
Reactive power be compared with given reactive power, export difference.When the capacitive reactive power that phase modifier issues is more than limitation, into phase
When too deep, comparison circuit output is high level, and diode current flow is low to encourage protection circuit work；Otherwise, comparison circuit exports low electricity
Flat, diode cut-off, low encourage protects circuit not work.The low setting for encouraging protection circuit is not limited to cited by the present embodiment
, as long as being that by the circuit of the function.
Further, the excitation unit of the phase modifier, the control circuit are a selector, control signal connection
To the low output end for encouraging protection circuit, measurement input terminal is connected to voltage transformer, and voltage input end is connected to given electricity
Volt circuit.When phase modifier into it is mutually too deep be more than limitation when, it is low encourage protection circuit can output signal to control circuit, by control circuit
Control terminal is set to high level, the voltage value of control circuit output measurement input terminal, the work of q axis field regulator, phase modifier twin shaft
Excitation operation.Conversely, low protection circuit of encouraging will not output signal to control electricity when phase modifier is not above limitation into phase depth
Road, control circuit control terminal are low level, and the voltage value of control circuit output voltage input terminal, q axis field regulator do not work,
Phase modifier is only driven by d axis excitation winding, single shaft operation.The setting of control circuit is not limited to cited by the present embodiment,
As long as being that by the circuit of the function.
As described above, according to the present invention, the excitation unit can be avoided when phase modifier into it is mutually too deep when end-heating and machine
The problem of group generator rotor angle increases, while excitation voltage can accurately be adjusted.
Although the embodiments of the present invention have been disclosed as above, but its be not restricted to it is listed in description and embodiments
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (5)
1. a kind of double axis excitation device of phase modifier characterized by comprising
Reactive power calculates device, and voltage transformer and current transformer are respectively connected to the electricity that the reactive power calculates device
Pressure and current input terminal；Comparison circuit, the output end that the reactive power calculates device are connected to the measurement of the comparison circuit
Input terminal gives the power input of reactive power circuit connection to the comparison circuit；Low to encourage protection circuit, the comparison is electric
The output end on road is connected to the low input terminal for encouraging protection circuit, and the low output end for encouraging protection circuit is connected to the control
The control signal of circuit processed；Control circuit, the voltage transformer are connected to the measurement input terminal of the control circuit, give
Potential circuit is connected to the voltage input end of the control circuit, and the output end of the control circuit is connected to q axis adjustment of field excitation
The pressure difference input terminal of device；Q axis field regulator, the given voltage circuit connection are defeated to giving for the q axis field regulator
Enter end, the output end of the q axis field regulator is connected to q axis excitation winding；Wherein, the stator, voltage transformer, described
Control circuit, the q axis field regulator, the q axis excitation winding are sequentially connected, and constitute closed loop.
2. the double axis excitation device of phase modifier as described in claim 1, which is characterized in that on the rotor of the phase modifier d,
Q axis direction is provided with orthogonal two excitation windings, the brush of commutator and commutator cooperation, the phase modifier
Excitation winding excitation voltage is obtained from the control circuit by the brush and the commutator.
3. the double axis excitation device of phase modifier as described in claim 1, which is characterized in that described voltage sensor one end and institute
The outlet for stating phase modifier is connected, and the other end is connected by the control circuit with the q axis field regulator.
4. the double axis excitation device of phase modifier as described in claim 1, which is characterized in that the low protection circuit of encouraging is one or two
Pole pipe, anode are connected to the output end of the comparison circuit, and cathode is connected to the control signal of the control circuit.
5. the double axis excitation device of phase modifier as described in claim 1, which is characterized in that the control circuit is a selection
Device, control signal are connected to the low output end for encouraging protection circuit, and measurement input terminal is connected to the mutual induction of voltage
Device, voltage input end are connected to the given voltage circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811531328.0A CN109412175A (en) | 2018-12-14 | 2018-12-14 | A kind of double axis excitation device of synchronous capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811531328.0A CN109412175A (en) | 2018-12-14 | 2018-12-14 | A kind of double axis excitation device of synchronous capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109412175A true CN109412175A (en) | 2019-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811531328.0A Pending CN109412175A (en) | 2018-12-14 | 2018-12-14 | A kind of double axis excitation device of synchronous capacitor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111200289A (en) * | 2020-02-25 | 2020-05-26 | 华北电力大学 | Steady-state control method for reactive power of double-shaft excitation phase modulator |
| CN111490708A (en) * | 2020-04-21 | 2020-08-04 | 新疆大学 | Double-shaft excitation device of synchronous phase modulator and adjusting method |
| CN112072976A (en) * | 2020-07-23 | 2020-12-11 | 中国电力科学研究院有限公司 | Q-axis excitation control device of double-shaft excitation phase modulator |
| CN112600470A (en) * | 2020-12-16 | 2021-04-02 | 华北电力大学 | Power tracking excitation control method and system for double-shaft excitation generator |
| CN113037022A (en) * | 2021-03-12 | 2021-06-25 | 国网新疆电力有限公司电力科学研究院 | Phase modifier large shaft protection method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788019A (en) * | 2017-03-07 | 2017-05-31 | 南京南瑞继保电气有限公司 | A kind of new reactive power of synchronous generator is crossed and encourages regulation technology |
| CN206807336U (en) * | 2017-06-16 | 2017-12-26 | 中国核工业电机运行技术开发有限公司 | A kind of excitation unit of generator |
| CN108281970A (en) * | 2017-12-25 | 2018-07-13 | 华中科技大学 | A kind of AC excitation synchronous capacitor and its control method |
| CN209608345U (en) * | 2018-12-14 | 2019-11-08 | 哈尔滨理工大学 | A kind of double axis excitation device of synchronous capacitor |
-
2018
- 2018-12-14 CN CN201811531328.0A patent/CN109412175A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788019A (en) * | 2017-03-07 | 2017-05-31 | 南京南瑞继保电气有限公司 | A kind of new reactive power of synchronous generator is crossed and encourages regulation technology |
| CN206807336U (en) * | 2017-06-16 | 2017-12-26 | 中国核工业电机运行技术开发有限公司 | A kind of excitation unit of generator |
| CN108281970A (en) * | 2017-12-25 | 2018-07-13 | 华中科技大学 | A kind of AC excitation synchronous capacitor and its control method |
| CN209608345U (en) * | 2018-12-14 | 2019-11-08 | 哈尔滨理工大学 | A kind of double axis excitation device of synchronous capacitor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111200289A (en) * | 2020-02-25 | 2020-05-26 | 华北电力大学 | Steady-state control method for reactive power of double-shaft excitation phase modulator |
| CN111200289B (en) * | 2020-02-25 | 2021-07-23 | 华北电力大学 | Steady-state control method for reactive power of double-shaft excitation phase modulator |
| CN111490708A (en) * | 2020-04-21 | 2020-08-04 | 新疆大学 | Double-shaft excitation device of synchronous phase modulator and adjusting method |
| CN112072976A (en) * | 2020-07-23 | 2020-12-11 | 中国电力科学研究院有限公司 | Q-axis excitation control device of double-shaft excitation phase modulator |
| CN112600470A (en) * | 2020-12-16 | 2021-04-02 | 华北电力大学 | Power tracking excitation control method and system for double-shaft excitation generator |
| CN113037022A (en) * | 2021-03-12 | 2021-06-25 | 国网新疆电力有限公司电力科学研究院 | Phase modifier large shaft protection method and device |
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