CN1917358A - Brushless excitation control system of TRT synchronous generator - Google Patents
Brushless excitation control system of TRT synchronous generator Download PDFInfo
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- CN1917358A CN1917358A CN 200610021788 CN200610021788A CN1917358A CN 1917358 A CN1917358 A CN 1917358A CN 200610021788 CN200610021788 CN 200610021788 CN 200610021788 A CN200610021788 A CN 200610021788A CN 1917358 A CN1917358 A CN 1917358A
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- synchronous generator
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Abstract
The system comprises a TRT synchronous generator, AC exciter, a supervision instrument, an exciting transformer, a three phase thyristor rectification bridge, an exciting regulator, a demagnetization unit and a detection coil. The input of the exciting transformer is coupled to the stator winding of the synchronous generator, and the outputs of the exciting transformer are respectively connected to the three phase thyristor rectification bridge and the exciting regulator; the output of the three phase rectification bridge is connected to the stator winding of the AC exciter; the detection coil is coupled to the stator winding of the AC exciter; the output of the detection coil is connected to the supervision instrument; the output of the exciting regulator is connected to the three phase thyristor rectification bridge through a trigger.
Description
Technical field
The present invention relates to synchronous generator excited system, particularly relate to a kind of TRT synchronous generator brushless excitation control system.
Background technology
TRT means blast-furnace top gas recovery, the TRT synchronous generator is meant that promptly prime mover is a kind of synchronous generator of blast-furnace top gas recovery, the operation principle of this generator is that the pressure coal gas that steel-making blast furnace produces is passed through directly to drive turbine after the dust cleaning apparatus dedusting, thereby the drive generator for electricity generation is a kind of device that pressure energy is converted into electric energy.The difference of this TRT synchronous generator and coal generating system maximum is need not dispose boiler, and this system is progressively used at home in recent years, and has obtained good society and economic benefit.Because it is relatively low that this system has a disposable input cost, and characteristics such as cost recovery is fast, pollution-free, extensive market prospects had.But because TRT synchronous generator roof pressure generating, excitation and control device thereof should have that constant voltage is regulated (generator is in starting and network process), permanent excitation regulation (behind the generator connecting in parallel with system) and the adjusting of permanent reactive power automatically or constant power factor is regulated automatically.
Summary of the invention
Summary of the invention of the present invention is to overcome the deficiencies in the prior art, and a kind of TRT synchronous generator brushless excitation control system is provided.This system has constant voltage and regulates (generator is in starting and network process), permanent excitation regulation (behind the generator connecting in parallel with system) and adjusting of permanent reactive power or the automatic regulatory function of constant power factor automatically, has advantages such as safe and reliable, with low cost, pollution-free.
Goal of the invention of the present invention is achieved through the following technical solutions: TRT synchronous generator brushless excitation control system, comprise the TRT synchronous generator, AC exciter, supervisory instrument, it also comprises excitation transformer, the three-phase controllable silicon rectifier bridge, field regulator, field suppression equipment, magnetic test coil, the input of excitation transformer and Stator Winding coupling, the output of excitation transformer is connected with field regulator with the three-phase controllable silicon rectifier bridge respectively, the output of three-phase controllable silicon rectifier bridge connects the AC exciter stator winding, magnetic test coil and the coupling of AC exciter stator winding, the output of magnetic test coil is connected with supervisory instrument, and the output of field regulator is connected with the three-phase controllable silicon rectifier bridge by trigger.
Each branch road of described three-phase controllable silicon rectifier bridge comprises two serial connection controllable silicon rectifier diodes.
Described field regulator comprises monolithic computer and I/O equipment thereof, perhaps comprises PC and I/O equipment thereof.
Field suppression equipment comprises disorderly closedown field suppression equipment and orderly closedown field suppression equipment, and wherein, the disorderly closedown field suppression equipment adopts nonlinear resistance discharge demagnetization, and the orderly closedown field suppression equipment adopts controlled rectification bridge inversion field suppression.
The field power supply of AC exciter is taken from generator machine end by excitation transformer.
The present invention adopts digitlization and automation equipment (single-chip microcomputer, computer PC) to regulate exciting current and inversion field suppression, automaticity height, demagnetization speed are fast, simultaneously, the field power supply of AC exciter is taken from generator machine end, whole generator compactness rational in infrastructure, help reducing the rapid wear unit, systematic function is stable, the reliability height.
Description of drawings
The structured flowchart of Fig. 1 excitation controlling device
Fig. 2 three-phase controllable silicon rectifier bridge and demagnetization circuit schematic diagram
Embodiment
The invention will be further described below in conjunction with accompanying drawing: as Fig. 1, TRT synchronous generator brushless excitation control system, comprise excitation transformer, the three-phase controllable silicon rectifier bridge, field regulator, field suppression equipment, magnetic test coil, the input of excitation transformer and Stator Winding coupling, the output of excitation transformer is connected with field regulator with the three-phase controllable silicon rectifier bridge respectively, the output of three-phase controllable silicon rectifier bridge connects the AC exciter stator winding, magnetic test coil and the coupling of AC exciter stator winding, the output of magnetic test coil is connected with supervisory instrument, and the output of field regulator is connected with the three-phase controllable silicon rectifier bridge by trigger.Described field regulator comprises monolithic computer and I/O equipment thereof, perhaps comprises PC and I/O equipment thereof.Stabilized voltage power supply provides working power for field regulator.
As Fig. 2, the three-phase controllable silicon rectifier bridge is made up of silicon controlled rectifier diode D1～D6, wherein each branch road of rectifier bridge comprises two serial connection controllable silicon rectifier diodes, the mid point of the every pair of serial connection controllable silicon rectifier diode armature of AC exciter respectively connects, field regulator reaches the purpose of regulating exciting current by the pilot angle of trigger adjusting silicon controlled rectifier diode.Simultaneously, the also double demagnetization effect of three-phase controllable silicon rectifier bridge, in the orderly closedown condition, field regulator is sent rotor winding energy stored back to the alternating current source by the pilot angle of trigger adjusting silicon controlled rectifier diode.The disorderly closedown field suppression equipment comprises that anode K switch and nonlinear resistance Rf form, and when the burst stopping accident, the anode K switch disconnects, and the high voltage of generator excitation winding coil discharge demagnetization L4 discharges by Rf.
Claims (6)
1, TRT synchronous generator brushless excitation control system, comprise the TRT synchronous generator, AC exciter, supervisory instrument, it is characterized in that: it also comprises excitation transformer, the three-phase controllable silicon rectifier bridge, field regulator, field suppression equipment, magnetic test coil, the input of excitation transformer and Stator Winding coupling, the output of excitation transformer is connected with field regulator with the three-phase controllable silicon rectifier bridge respectively, the output of three-phase controllable silicon rectifier bridge connects the AC exciter stator winding, magnetic test coil and the coupling of AC exciter stator winding, the output of magnetic test coil is connected with supervisory instrument, and the output of field regulator is connected with the three-phase controllable silicon rectifier bridge by trigger.
2, TRT synchronous generator brushless excitation control system according to claim 1, it is characterized in that: each branch road of described three-phase controllable silicon rectifier bridge comprises two serial connection controllable silicon rectifier diodes.
3, TRT synchronous generator brushless excitation control system according to claim 1, it is characterized in that: described field regulator comprises monolithic computer and I/O equipment thereof.
4, TRT synchronous generator brushless excitation control system according to claim 1, it is characterized in that: described field regulator comprises PC and I/O equipment thereof.
5, TRT synchronous generator brushless excitation control system according to claim 1; it is characterized in that: field suppression equipment comprises disorderly closedown field suppression equipment and orderly closedown field suppression equipment; wherein; the disorderly closedown field suppression equipment adopts nonlinear resistance discharge demagnetization, and the orderly closedown field suppression equipment adopts controlled rectification bridge inversion field suppression.
6, TRT synchronous generator brushless excitation control system according to claim 1, it is characterized in that: the field power supply of AC exciter is taken from generator machine end by excitation transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610021788 CN1917358A (en) | 2006-09-08 | 2006-09-08 | Brushless excitation control system of TRT synchronous generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610021788 CN1917358A (en) | 2006-09-08 | 2006-09-08 | Brushless excitation control system of TRT synchronous generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1917358A true CN1917358A (en) | 2007-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610021788 Pending CN1917358A (en) | 2006-09-08 | 2006-09-08 | Brushless excitation control system of TRT synchronous generator |
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| CN (1) | CN1917358A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545507A (en) * | 2012-01-12 | 2012-07-04 | 苏州德丰电机有限公司 | Excitation supply circuit for synchronous brushless generator |
| CN103780190A (en) * | 2014-01-16 | 2014-05-07 | 南京南瑞继保电气有限公司 | Generator faulty force excitation detection method and device |
| CN103777141A (en) * | 2012-10-22 | 2014-05-07 | 中广核工程有限公司 | Large generator brushless exciter online detection method, system and phase failure method |
| CN105490600A (en) * | 2016-02-04 | 2016-04-13 | 华自科技股份有限公司 | Generator excitation system and parameter design method and system thereof |
| WO2018095105A1 (en) * | 2016-11-24 | 2018-05-31 | 华北电力科学研究院有限责任公司 | Method and device for limiting stator current utilized in automatic voltage regulator of electric generator |
-
2006
- 2006-09-08 CN CN 200610021788 patent/CN1917358A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545507A (en) * | 2012-01-12 | 2012-07-04 | 苏州德丰电机有限公司 | Excitation supply circuit for synchronous brushless generator |
| CN103777141A (en) * | 2012-10-22 | 2014-05-07 | 中广核工程有限公司 | Large generator brushless exciter online detection method, system and phase failure method |
| CN103777141B (en) * | 2012-10-22 | 2017-02-22 | 中广核工程有限公司 | Large generator brushless exciter online detection method, system and phase failure method |
| CN103780190A (en) * | 2014-01-16 | 2014-05-07 | 南京南瑞继保电气有限公司 | Generator faulty force excitation detection method and device |
| CN105490600A (en) * | 2016-02-04 | 2016-04-13 | 华自科技股份有限公司 | Generator excitation system and parameter design method and system thereof |
| WO2018095105A1 (en) * | 2016-11-24 | 2018-05-31 | 华北电力科学研究院有限责任公司 | Method and device for limiting stator current utilized in automatic voltage regulator of electric generator |
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