CN1073557A - The synchronous machine of excitation of direct current generator is born the excitation operation method - Google Patents
The synchronous machine of excitation of direct current generator is born the excitation operation method Download PDFInfo
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- CN1073557A CN1073557A CN 91106883 CN91106883A CN1073557A CN 1073557 A CN1073557 A CN 1073557A CN 91106883 CN91106883 CN 91106883 CN 91106883 A CN91106883 A CN 91106883A CN 1073557 A CN1073557 A CN 1073557A
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Abstract
A kind of negative excitation operation method of synchronous machine that relates to the excitation of direct current generator of power generation regulating system, the feedback network that constitutes based on synchronous machine, synchronous machinery excitation winding, exciter armature, exciter excitation winding and the controlled compound excitation transformer of prior art, rectifier bridge, voltage corrector, set up, be connected in series negative excitation and switch switch or set up, in parallelly negatively encourage fixed power source, have and enlarge synchronous machine and absorb idle ability, widen the effect that voltage is adjusted width.
Description
The present invention relates to the generating regulating system of electric power in the electricity field,
Continuous development along with power industry, net capacity increases day by day, great changes have taken place in electric network composition, the extra high voltage network showed increased, caused the increase of system's capacitive reactive power, not only influenced the safe operation of grid voltage quality and transmitting and transforming equipment, electrical loss is increased, economic benefit descends, so reactive power and voltage-regulation have become an outstanding problem of system.
For solving idle and voltage regulation problem, people have taked multiple adjusting pressure measure, such as timely switched capacitor, reactor, with the generator underexcited operation, and concerning synchronous machine, its Capacity Ratio design load underexcitation and that encourage excessively is generally 0.5-0.66, has limited exerting oneself of underexcited operation, has influenced voltage regulation result.
The present invention's purpose be to design a kind ofly enlarge that synchronous machine absorbs idle ability, widens that voltage is adjusted width, itself is safe and reliable, the negative excitation operation method of synchronous machine of the excitation of direct current generator of small investment, high efficiency.
Technical solution of the present invention is: the negative excitation operation method of the synchronous machine of this excitation of direct current generator includes synchronous machine (1), synchronous machinery excitation winding (2), exciter armature (3), exciter excitation winding (4), controlled compound excitation transformer (5), rectifier bridge (6), voltage corrector (7), exciter armature (3), exciter excitation winding (4) in parallel with synchronous machinery excitation winding (2) and with the coaxial installation of synchronous machine, voltage corrector (7), controlled compound excitation transformer (5) is from the output test sampling of synchronous machine, export by rectifier bridge (6), constitute feedback network, be connected to exciter armature (3), on the exciter excitation winding (4), principal character of the present invention is to set up negative excitation to switch switch (8) or set up the negative fixed power source (9) of encouraging, negative excitation is switched rectifier bridge (6) the output connection exciter excitation winding (4) that switch (8) is serially connected in controlled compound excitation transformer (5), in the loop of exciter armature (3), set up and negative encourage fixed power source (9), then will bear and encourage fixed power source (9) and be directly parallel in exciter armature (3) two ends.
Fig. 1 is the negative excitation working line figure of self-excitation type of the present invention;
Fig. 2 is the negative excitation working line figure of separated exciting of the present invention;
Fig. 3 is prior art excitation working line figure.
Be described further below in conjunction with accompanying drawing:
As shown in Figure 1, the negative excitation operation method of the synchronous machine of this excitation of direct current generator is a self-excitation type, wherein prior art is: synchronous machine (1), synchronous machinery excitation winding (2), exciter armature (3), exciter excitation winding (4), controlled compound excitation transformer (5), rectifier bridge (6), voltage corrector (7), resistance (10) is regulated in magnetic field, exciter armature (3), exciter excitation winding (4) is in parallel with synchronous machinery excitation winding (2), with the coaxial installation of synchronous machine, voltage corrector (7), controlled compound excitation transformer (5) is from the output test sampling of synchronous machine, export by rectifier bridge (6), constitute feedback network, be connected to exciter armature (3), on the exciter excitation winding (4), the present invention connects exciter armature (3) in rectifier bridge (6) output, the negative excitation of serial connection is switched switch (8) in the loop of exciter excitation winding (4), the perhaps fixed power source (9) of encouraging in parallel negative at exciter armature (3) two ends is negatively encouraged fixed power source (9) and is comprised combined floodgate switch (12), battery pack (13), diode (14), adjustable resistance (15), also be serially connected with field suppression switch (16) between exciter armature (3) and the synchronous machinery excitation winding (2) in addition.
The negative excitation operation method of the synchronous machine of excitation of direct current generator shown in Figure 2 is a separated exciting, prior art wherein is: synchronous machine (1), synchronous machinery excitation winding (2), main exciter excitation winding (4), main exciter armature (3), pay exciter armature (17), pay exciter excitation winding (18), controlled compound excitation transformer (5), rectifier bridge (6), voltage corrector (7), resistance (19 is regulated in magnetic field, 20), main, pay exciter and the coaxial installation of synchronous machine, main exciter armature (3) is in parallel with synchronous machinery excitation winding (2), and main exciter excitation winding (4), pay exciter armature (17), pay exciter excitation winding (18) parallel connection, controlled compound excitation transformer (5), rectifier bridge (6), voltage corrector (7) constitutes feedback network, output test sampling from synchronous machine (1), export from rectifier bridge (6), method of the present invention is: at rectifier bridge (a 6) output and a pair exciter excitation winding (18), pay in the link circuit of exciter armature (17) the negative excitation of serial connection and switch switch (8), simultaneously, in paying the shunt circuit of exciter armature (17) and main exciter excitation winding (4), be connected in series the second negative excitation and switch switch (21).
The negative excitation operation of the synchronous machine of excitation of direct current generator performing step:
When system needs the negative excitation of synchronous machine to move, by controlled compound excitation transformer (5), rectifier bridge (6), voltage corrector (7) or regulate resistance (10 with manual adjustments magnetic field, 19,20) the synchronous electric motor rotor field resistance is strengthened, when treating that resistance resistance value maximum is regulated in magnetic field, draw back field suppression switch (16), negative combined floodgate switch (12) of encouraging fixed power source (11) closes, close UNICOM's negative supply or use negative excitation to switch switch (8 or 21), make main exciting current reverse, field suppression switch (16) again closes, regulate resistance by regulating magnetic field, can realize the negative operation of encouraging.
The theoretical analysis of the present invention and evidence, synchronous machine can stable operation under negative excitation operational mode, not only can enlarge synchronous machine and absorb idle ability, transient security there is special role again, having the synchronous machine of widening voltage simultaneously adjusts width and improves adjustment capability, and unit itself is safe and reliable, few, the high efficiency of investment for trnasforming urban land for excitation unit, therefore, the negative excitation operation of synchronous machine can be applied as a kind of operation method on the basis of certain reserve factor, to increase the regulating measure of system's reactive voltage.
Claims (3)
1, a kind of synchronous machine of excitation of direct current generator is born the excitation operation method, include synchronous machine (1), synchronous machinery excitation winding (2), exciter armature (3), exciter excitation winding (4), controlled compound excitation transformer (5), rectifier bridge (6), voltage corrector (7), exciter armature (3), exciter excitation winding (4) is in parallel with synchronous machinery excitation winding (2), and with the coaxial installation of synchronous machine, voltage corrector (7), controlled compound excitation transformer (5) is from the output test sampling of synchronous machine, export by rectifier bridge (6), constitute feedback network, be connected to exciter armature (3), on the exciter excitation winding (4), the present invention is characterised in that setting up negative excitation switches switch (8) or set up the negative fixed power source (9) of encouraging, negative excitation is switched rectifier bridge (6) the output connection exciter excitation winding (4) that switch (8) is serially connected in controlled compound excitation transformer (5), in the loop of exciter armature (3), set up and negative encourage fixed power source (9), then will bear and encourage fixed power source (9) and be directly parallel in exciter armature (3) two ends.
2, according to the negative excitation operation method of the synchronous machine of the excitation of direct current generator of claim 1, adopt separated exciting, it is characterized in that rectifier bridge (6) output with pay an exciter excitation winding (18), pay to be connected in series in the link circuit of exciter armature (17) and bear excitation and switch switch (8), simultaneously, in paying the shunt circuit of exciter armature (17) and main exciter excitation winding (4), be connected in series the second negative excitation and switch switch (21).
3,, it is characterized in that negatively encouraging fixed power source (9) and comprising combined floodgate switch (12), battery pack (13), diode (14), adjustable resistance (15) according to the negative excitation operation method of the synchronous machine of the excitation of direct current generator of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106883 CN1073557A (en) | 1991-12-20 | 1991-12-20 | The synchronous machine of excitation of direct current generator is born the excitation operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106883 CN1073557A (en) | 1991-12-20 | 1991-12-20 | The synchronous machine of excitation of direct current generator is born the excitation operation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1073557A true CN1073557A (en) | 1993-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91106883 Pending CN1073557A (en) | 1991-12-20 | 1991-12-20 | The synchronous machine of excitation of direct current generator is born the excitation operation method |
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| CN (1) | CN1073557A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048366C (en) * | 1997-01-29 | 2000-01-12 | 沈绍荣 | Cableway generating method |
| CN102025309A (en) * | 2010-12-31 | 2011-04-20 | 东莞理文造纸厂有限公司 | Brushless static excitation system for turbonator |
| CN101632219B (en) * | 2007-02-06 | 2012-02-01 | 康明斯发电机技术有限公司 | Method of and apparatus for controlling excitation |
| CN102790571A (en) * | 2012-08-29 | 2012-11-21 | 北京交通大学 | Brushless excitation system of wind turbine and switching method of primary excitation system and secondary excitation system |
| CN109274300A (en) * | 2018-11-12 | 2019-01-25 | 株洲航发动科南方燃气轮机有限公司 | The starting of Gas Turbine Generating Units and excitation system, method |
-
1991
- 1991-12-20 CN CN 91106883 patent/CN1073557A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048366C (en) * | 1997-01-29 | 2000-01-12 | 沈绍荣 | Cableway generating method |
| CN101632219B (en) * | 2007-02-06 | 2012-02-01 | 康明斯发电机技术有限公司 | Method of and apparatus for controlling excitation |
| CN102025309A (en) * | 2010-12-31 | 2011-04-20 | 东莞理文造纸厂有限公司 | Brushless static excitation system for turbonator |
| CN102790571A (en) * | 2012-08-29 | 2012-11-21 | 北京交通大学 | Brushless excitation system of wind turbine and switching method of primary excitation system and secondary excitation system |
| CN102790571B (en) * | 2012-08-29 | 2015-01-07 | 北京交通大学 | Brushless excitation system of wind turbine and switching method of primary excitation system and secondary excitation system |
| CN109274300A (en) * | 2018-11-12 | 2019-01-25 | 株洲航发动科南方燃气轮机有限公司 | The starting of Gas Turbine Generating Units and excitation system, method |
| CN109274300B (en) * | 2018-11-12 | 2020-03-24 | 株洲航发动科南方燃气轮机有限公司 | Starting and excitation system and method for gas turbine generator set |
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