CN102064757A - Generator accident reinforced excitation circuit - Google Patents
Generator accident reinforced excitation circuit Download PDFInfo
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- CN102064757A CN102064757A CN 201010603156 CN201010603156A CN102064757A CN 102064757 A CN102064757 A CN 102064757A CN 201010603156 CN201010603156 CN 201010603156 CN 201010603156 A CN201010603156 A CN 201010603156A CN 102064757 A CN102064757 A CN 102064757A
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Abstract
The invention relates to a generator accident reinforced excitation circuit, wherein the secondary side of an excitation transformer is a duplex winding which is respectively connected with a first rectifier and a second rectifier; the first rectifier is connected with a first diode and a rotor winding in series; the second rectifier is connected with a second diode and the rotor winding in series; one end of the rotor winding is connected with the anode of the first diode, and the other end of the rotor winding is connected with the cathode of the second diode; and a thyristor switch is connected between the cathode of the first diode and the anode of the second diode. By the structure innovation of the excitation main circuit, the invention completely optimizes the function features of the system, improves the parameter performance under an normal operation condition, achieves the purposes of high safety of 99.99%, high efficiency, energy saving, consumption reduction, and the like during long-term operation of an excitation system, reduces the cost of high-parameter excitation configuration, is favorable for safe operation for a long term, and ensures sufficient supply of accident reinforced excitation to generators.
Description
Technical field
The present invention relates to a kind of synchronous generator accident forced exciting circuit, belong to big-and-middle-sized synchronous generator stationary rectifier excitation system field.
Background technology
There is the parameter configuration height in conventional electric generators stationary rectifier excitation circuit, and utilization rate of equipment and installations is low, running wastage is big, a series of disadvantages such as overvoltage height during the thyristor commutation, and the actual accident that provides for generator is the ability of encouraging problem such as be difficult to meet design requirement by force.
Summary of the invention
The purpose of this invention is to provide a kind of forced exciting circuit, solve field circuit parameter configuration height in the prior art, problems such as utilization rate of equipment and installations is low, running wastage is big, commutation overvoltage height, by structure optimization, realize the parallel running of rectifier power source and the flexibility conversion that series connection is encouraged by force to excitation system.
For solving the problems of the technologies described above, the object of the present invention is achieved like this: a kind of generator accident forced exciting circuit, the excitation transformer secondary side is a double winding, double winding connects first rectifier, second rectifier respectively, first rectifier and first diode, rotor windings in series, second rectifier and second diode, rotor windings in series, rotor winding one end connects first diode anode, the other end connects second diode cathode, also is serially connected with thyristor switch between first diode cathode and second diode anode.
A kind of generator accident of the present invention forced exciting circuit adopts double-winding structure, to rectifier grouping power supply, and the thorough separation on the source, normal rectification moves two groups of rectifiers in the load end parallel connection, exports exciting current jointly; By encouraging change-over circuit by force, realize the mode of encouraging by force of voltage stack when needing accident to encourage by force.
The voltage superimposed type is encouraged circuit by force, guarantee to encourage by force for accident provide encourage ability by force in, promptly satisfy systematic failures less than 0.01% probability; Again by optimizing the functional structure of excitation main body circuit, cooperating excitation to become transforms, solved traditional field circuit parameter configuration height, a series of disadvantages such as utilization rate of equipment and installations is low, running wastage is big, commutation overvoltage height, and the reality ability of encouraging problem such as be difficult to meet design requirement by force.
Structure innovation by excitation main body circuit, comprehensively optimized the functional characteristic of system, improved the performance parameters under the normality service conditions, also fine when having solved the excitation system long-time running greater than 99.99% fail safe, high efficiency and problem such as energy-saving and cost-reducing, and reduced the cost of high parameter excitation arrangement, help operation steady in a long-term, and guarantee that the accident that provides enough encourages ability by force to generator.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is a structural representation of the present invention.
Embodiment
A kind of generator accident forced exciting circuit, excitation transformer ZB secondary side is a double winding, double winding connects the first rectifier Z1, the second rectifier Z2 respectively, the first rectifier Z1 connects with the first diode V1, rotor winding L, the second rectifier Z2 connects with the second diode V2, rotor winding L, rotor winding L one end connects the first diode V1 anode, the other end connects the second diode V2 negative electrode, also be serially connected with thyristor switch QK between the first diode V1 negative electrode and the second diode V2 anode, as the executive component of encouraging action by force.
Normal operating condition:
Encourage switch S CR blocking-up by force, the first rectifier Z1 and second rectifier Z2 output in parallel, and can regulate and control the output current current-sharing respectively, because power supply is independent, current-sharing realizes being more prone to.
Exciting voltage UL=UZ1=UZ2 ULmax=1.3 ~ 1.5Ufn
If=I1+I2 Iqk=0
The excitation output voltage is rectifier voltage, and about a=50 ° of rectifier pilot angle can provide the adjusting range of 1.5Vfn, and rectification becomes secondary voltage only for having 60～70% of anode voltage now, and usage ratio of equipment significantly improves.
Accident is encouraged state by force:
Encourage switch S CR triggering and conducting by force, the first rectifier Z1 and the second rectifier Z2 are automatically converted to series system, then realize the state of encouraging by force of high limited value, field-forcing voltage ULq=UZ1+UZ2=(1.3 ~ 1.5) 2UZ.
Exciting current is begun to increase to encouraging the top value by force by Ifo=I1+I2, and its final value is by encouraging the electric current limit decision by force, and excitation output field-forcing voltage is that the first rectifier Z1 and the second rectifier Z2 voltage sum reach the more high-strength top value of encouraging.Encourage function operations by force and just switch realization by additional thyristor SCR switch QK.If encourage release by force, then cut off the triggering signal of the switch QK of thyristor SCR, make a certain group of rectifier inversion 10～20ms among the first rectifier Z1 and the second rectifier Z2 simultaneously, the switch QK of thyristor SCR is oppositely closed, field circuit is replied normal condition.
Claims (1)
1. generator accident forced exciting circuit, it is characterized in that: excitation transformer (ZB) secondary side is a double winding, double winding connects first rectifier (Z1) respectively, second rectifier (Z2), first rectifier (Z1) and first diode (V1), rotor winding (L) series connection, second rectifier (Z2) and second diode (V2), rotor winding (L) series connection, rotor winding (L) end connects first diode (V1) anode, the other end connects second diode (V2) negative electrode, also is serially connected with thyristor switch (QK) between first diode (V1) negative electrode and second diode (V2) anode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106031560A CN102064757B (en) | 2010-12-24 | 2010-12-24 | Generator accident reinforced excitation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106031560A CN102064757B (en) | 2010-12-24 | 2010-12-24 | Generator accident reinforced excitation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102064757A true CN102064757A (en) | 2011-05-18 |
| CN102064757B CN102064757B (en) | 2012-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106031560A Active CN102064757B (en) | 2010-12-24 | 2010-12-24 | Generator accident reinforced excitation circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN102064757B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993758A (en) * | 2015-07-31 | 2015-10-21 | 华中科技大学 | Brushless doubly-fed shaft-driven power generation system short-time overload control apparatus and control method |
| CN105099308A (en) * | 2015-09-22 | 2015-11-25 | 东方电机控制设备有限公司 | Generator excitation device |
| CN107834922A (en) * | 2017-11-08 | 2018-03-23 | 华北电力科学研究院有限责任公司 | A kind of condition control method and device of the limitation of field regulator stator current |
| CN110771032A (en) * | 2017-04-20 | 2020-02-07 | Abb瑞士股份有限公司 | Power generation system |
| CN112952784A (en) * | 2021-02-24 | 2021-06-11 | 国网浙江省电力有限公司电力科学研究院 | Excitation becomes overload limiter suitable for flexible excitation system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101048933A (en) * | 2004-10-28 | 2007-10-03 | 阿尔斯通技术有限公司 | Static energising system for a generator and method for operation of such an energising system |
| CN101741193A (en) * | 2010-01-14 | 2010-06-16 | 刘志新 | Series hybrid excitation synchronous generator |
| WO2010094818A1 (en) * | 2009-02-19 | 2010-08-26 | Universidad Politécnica de Madrid | Rapid de-excitation system for synchronous machines with indirect excitation |
| CN101860313A (en) * | 2010-05-27 | 2010-10-13 | 国电南瑞科技股份有限公司 | Self-excited synchronous generator alternating current excitation initiating circuit |
| CN201616659U (en) * | 2010-01-27 | 2010-10-27 | 东方电气集团东方电机有限公司 | Multi-modular redundancy deexcitation protection circuit |
| CN201887713U (en) * | 2010-12-24 | 2011-06-29 | 中国长江三峡集团公司 | Reinforced excitation circuit for handling electric generator accidents |
-
2010
- 2010-12-24 CN CN2010106031560A patent/CN102064757B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101048933A (en) * | 2004-10-28 | 2007-10-03 | 阿尔斯通技术有限公司 | Static energising system for a generator and method for operation of such an energising system |
| WO2010094818A1 (en) * | 2009-02-19 | 2010-08-26 | Universidad Politécnica de Madrid | Rapid de-excitation system for synchronous machines with indirect excitation |
| CN101741193A (en) * | 2010-01-14 | 2010-06-16 | 刘志新 | Series hybrid excitation synchronous generator |
| CN201616659U (en) * | 2010-01-27 | 2010-10-27 | 东方电气集团东方电机有限公司 | Multi-modular redundancy deexcitation protection circuit |
| CN101860313A (en) * | 2010-05-27 | 2010-10-13 | 国电南瑞科技股份有限公司 | Self-excited synchronous generator alternating current excitation initiating circuit |
| CN201887713U (en) * | 2010-12-24 | 2011-06-29 | 中国长江三峡集团公司 | Reinforced excitation circuit for handling electric generator accidents |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993758A (en) * | 2015-07-31 | 2015-10-21 | 华中科技大学 | Brushless doubly-fed shaft-driven power generation system short-time overload control apparatus and control method |
| CN104993758B (en) * | 2015-07-31 | 2018-02-23 | 华中科技大学 | A kind of brushless double fed shaft electricity generation system short-time overload control device and control method |
| CN105099308A (en) * | 2015-09-22 | 2015-11-25 | 东方电机控制设备有限公司 | Generator excitation device |
| CN105099308B (en) * | 2015-09-22 | 2018-06-29 | 东方电机控制设备有限公司 | A kind of generator excitation unit |
| CN110771032A (en) * | 2017-04-20 | 2020-02-07 | Abb瑞士股份有限公司 | Power generation system |
| CN107834922A (en) * | 2017-11-08 | 2018-03-23 | 华北电力科学研究院有限责任公司 | A kind of condition control method and device of the limitation of field regulator stator current |
| CN112952784A (en) * | 2021-02-24 | 2021-06-11 | 国网浙江省电力有限公司电力科学研究院 | Excitation becomes overload limiter suitable for flexible excitation system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102064757B (en) | 2012-11-07 |
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