JPH0378477A - Operating method of synchronous generator - Google Patents
Operating method of synchronous generatorInfo
- Publication number
- JPH0378477A JPH0378477A JP21060089A JP21060089A JPH0378477A JP H0378477 A JPH0378477 A JP H0378477A JP 21060089 A JP21060089 A JP 21060089A JP 21060089 A JP21060089 A JP 21060089A JP H0378477 A JPH0378477 A JP H0378477A
- Authority
- JP
- Japan
- Prior art keywords
- synchronous generator
- motor
- starting
- generator
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 49
- 238000011017 operating method Methods 0.000 title description 2
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000005284 excitation Effects 0.000 description 6
- 239000007858 starting material Substances 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
Landscapes
- Motor And Converter Starters (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的コ
（産業上の利用分野）
本発明はガスタービン駆動同期発電機等に用いられる同
期発電機の運転方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Objective of the Invention (Industrial Application Field) The present invention relates to a method of operating a synchronous generator used in a gas turbine-driven synchronous generator or the like.
（従来の技術）
コンバインドサイクル発電プラント等ガスタービンによ
って駆動される同期発電機は起動時にガスタービンのパ
ージ及びガスタービン着火後の昇速のため外部からの駆
動力により規定回転数への昇速か必要となる。(Prior art) A synchronous generator driven by a gas turbine such as a combined cycle power plant uses an external driving force to purge the gas turbine at startup and increase the speed after ignition of the gas turbine to a specified rotation speed. It becomes necessary.
このため従来のガスタービン発電設備は発電機軸に直結
された起動用誘導電動機及びトルクコンバータ又は第３
図に示す様な同期発電機本体を起動用電動機として用い
るスタティックスタータ方式等を用いていた。For this reason, conventional gas turbine power generation equipment uses a starting induction motor directly connected to the generator shaft and a torque converter or third
Static starter systems were used, such as the one shown in the figure, which uses a synchronous generator as a starting motor.
第３図においてガスタービンにより駆動される同期発電
機（１）は主変圧器（２）を介して電力を系統へ供給す
る。又同期発電機（１）は励磁変圧器（１４）、自動電
圧調整器（１２）に依り制御されるサイリスタ変換器（
５）によって主回路から直接励磁を供給される（サイリ
スタ励磁の場合）。In FIG. 3, a synchronous generator (1) driven by a gas turbine supplies power to the grid via a main transformer (2). The synchronous generator (1) also includes an excitation transformer (14) and a thyristor converter (12) controlled by an automatic voltage regulator (12).
5), excitation is supplied directly from the main circuit (in the case of thyristor excitation).
一方、ガスタービン起動時の駆動力は上記同期発電機（
１）を同期発電機として運転することによより得られ、
その駆動用電源は発電機遮断器（１１）を開状態にて所
内の補機電源系統等から、交流遮断器（１３）、起動電
源変圧器（７）及びサイリスタ変換器（８）、直流リア
クトル（９）から成るスタティックスタータ回路を通し
て可変周波数電源として発電機主回路に供給される。On the other hand, the driving force when starting the gas turbine is generated by the above-mentioned synchronous generator (
1) can be obtained by operating it as a synchronous generator,
When the generator circuit breaker (11) is open, the driving power is supplied from the in-house auxiliary power supply system, etc. to the AC circuit breaker (13), starting power transformer (7), thyristor converter (8), and DC reactor. It is supplied to the generator main circuit as a variable frequency power source through the static starter circuit consisting of (9).
（発明が解決しようとする課題）
以上の如く構成された同期発電機の運転方法において、
起動用誘導電動機を用いる方法では、回転数制御用にト
ルクコンバータを使用することになるが、大容量のトル
クコンバータの実績が少なく又、保守性・信頼性が劣り
、又スタティックスタータ回路の場合には同期発電機本
体を起動時に同期発電機として運転するためその制御が
複雑となり、又独立したサイリスク変換器及び制御装置
から成るスタティックスタータ回路が発電機主回路に直
接接続されるため、主回路構成が複雑となり、更に経済
性に劣る等の問題点があった。(Problem to be solved by the invention) In the method of operating a synchronous generator configured as described above,
In the method of using an induction motor for starting, a torque converter is used to control the rotation speed, but there is little experience with large-capacity torque converters, and the maintainability and reliability are poor, and in the case of a static starter circuit, Since the synchronous generator itself operates as a synchronous generator at startup, its control is complicated, and the static starter circuit, which consists of an independent syrisk converter and control device, is directly connected to the generator main circuit, so the main circuit configuration is However, there were other problems such as complexity and poor economic efficiency.
本発明は上記の従来の欠点に鑑みなされたものであり、
構成、制御が簡単で保守性、信頼性に優れた同期発電機
の運転方法を提供することを目的とする。The present invention has been made in view of the above-mentioned conventional drawbacks,
The purpose of the present invention is to provide a method for operating a synchronous generator that is easy to configure and control, and has excellent maintainability and reliability.
［発明の構成］
（課題を解決するための手段）
上記目的を達成するため本発明においては、起動時にお
いては起動電源変圧器を介して発電機主回路から供給さ
れる ゛流７＋ 、Ｃをサイリスタ変換器にて交流／
直流変換した後、直流リアクトルおよびサイリスタ変換
器を介して可変周波数の交流電源に再変換して同期発電
機に直結された起動用電動機に供給し、該起動用電動機
を可変速電動機として運転し同期発電機の起動を行い、
同期発電機の起動完了後においては、前記サイリスク変
換器を交流／直流変換器として制御して同期発電機の励
磁を行うようにする。[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, in the present invention, at the time of startup, the current 7+, C supplied from the generator main circuit via the startup power transformer is AC with thyristor converter/
After converting to DC, it is reconverted to variable frequency AC power via a DC reactor and thyristor converter, and is supplied to a starting motor directly connected to a synchronous generator, and the starting motor is operated as a variable speed motor and synchronized. Start the generator,
After the synchronous generator is started, the synchronous generator is controlled as an AC/DC converter to excite the synchronous generator.
（作 用）
上記の方法を用いることにより、同期発電機に直結され
た起動用電動機は発電機の起動時は交流可変速電動機と
して起動用に使用でき、起動完了後の前記発電機運転中
には交流励磁機として使用できるので構成、制御が簡略
化できる。(Function) By using the above method, the starting motor directly connected to the synchronous generator can be used as an AC variable speed motor for starting when starting the generator, and during the generator operation after starting is completed. Since it can be used as an AC exciter, the configuration and control can be simplified.
（実施例） 本発明の一実施例を図面を参照して説明する。(Example) An embodiment of the present invention will be described with reference to the drawings.
第１図は本発明に係る同期発電機の運転方法の一実施例
を示す系統図であり、同期発電機（１）は主変圧器（２
）を介して電力を系統に供給する。又、上記同期発電機
（１）は発電機軸に直結された同期発電電動機（３）を
交流励磁機として運転することにより同期発電機（１）
の励磁が供給され、励磁電源は制御装置（４）により自
動電圧制御されたサイリスタ変換器（５）、界磁遮断器
（６）を介して同期発電機（１）の界磁へ伝送されてい
る。FIG. 1 is a system diagram showing an embodiment of the synchronous generator operating method according to the present invention, in which the synchronous generator (1) is connected to the main transformer (2).
) to supply power to the grid. In addition, the synchronous generator (1) is operated by operating the synchronous generator motor (3) directly connected to the generator shaft as an AC exciter.
The excitation power is transmitted to the field of the synchronous generator (1) via the thyristor converter (5) and the field breaker (6), which are automatically voltage controlled by the control device (4). There is.
一方、起動時には起動電源変圧器（７）、サイリスタ変
換器（５）及び（８）、直流リアクトル（９）及び直流
遮断器（１０）を介して同期発電電動機（３）へ主回路
から直接電源供給が可能なため、上記電源を負荷転流方
式の可変周波数制御することで同期発電電動機（３）を
可変速電動機として運転でき、よって起動駆動力を供給
しかつ任意の回転数制御が可能となる。On the other hand, at startup, power is supplied directly from the main circuit to the synchronous generator motor (3) via the startup power transformer (7), thyristor converters (5) and (8), DC reactor (9), and DC breaker (10). Since the above power source can be controlled with variable frequency using a load commutation method, the synchronous generator motor (3) can be operated as a variable speed motor, thereby supplying the starting driving force and making it possible to control the rotational speed at any desired speed. Become.
上記サイリスタ変換器（５）及び（８）は制御装置（４
）により起動時は負荷転流方式のインバータ制御、又発
電機運転時は自動電圧制御され、又起動時と発電機運転
時の電源切換は界磁遮断器（６）、直流遮断器（１０）
を切換えることにより行うことができる。The thyristor converters (5) and (8) are connected to the control device (4).
) for load commutation type inverter control during startup and automatic voltage control during generator operation, and for power switching between startup and generator operation, field circuit breaker (6) and DC circuit breaker (10)
This can be done by switching.
次に本発明の他の実施例について第２図を参照して説明
する。Next, another embodiment of the present invention will be described with reference to FIG.
基本的な構成は第１図と同様であるが、第２図において
は発電機運転中の同期発電機（１）の励磁は起動電源変
圧器（７）及びサイリスタ変換器（８）を介して制御・
供給され、会鉗同期発電機（１５）は起動時駆動用にの
み使用するようにしたものである。The basic configuration is the same as in Fig. 1, but in Fig. 2, the excitation of the synchronous generator (1) during generator operation is via the starting power transformer (7) and the thyristor converter (8). control·
The synchronous generator (15) is used only for driving at startup.
又上記実施例では起動用電動機として同期機を用いこれ
を負荷転流方式のインバータにて可変速制御しているが
、例えば起動用電動機を誘導機としてこれを可変速制御
する方法も考えられる。Further, in the above embodiment, a synchronous machine is used as the starting motor and variable speed control is performed using a load commutation type inverter, but for example, it is also possible to use an induction motor as the starting motor and control the speed at variable speed.
又、起動用電源変圧器（７）は発電機主回路に直接接続
している為、発電機遮断器（１１）を用いて起動待主回
路を開路するようになっているが、例えば起動電源変圧
器（８）を所内電源に接続することで発電機遮断Ｓ （
１１）を省略しても良い。In addition, since the starting power transformer (7) is directly connected to the generator main circuit, a generator circuit breaker (11) is used to open the starting standby main circuit. Generator shutoff S (
11) may be omitted.
更に第２図に示した実施例において同期発電機は起動時
のみ使用し、発電機運転中は電磁クラッチ他により発電
機軸から切離すように構成しても良い。Furthermore, in the embodiment shown in FIG. 2, the synchronous generator may be configured to be used only at startup, and to be disconnected from the generator shaft by an electromagnetic clutch or the like during generator operation.
［発明の効果コ
以上述べたように、本発明においては、同期発電機に直
結された起動用電動機を交流可変速電動機として起動用
に使用することにより同期発電機と起動用電動機の制御
を分離でき、更に上記起動用電動機の回路一部を発電機
運転中においては同期発電機の励磁装置として使用する
ことができるので、構成・制御方法が簡略化され、保守
性、信頼性に優れた同期発電機の運転を提供することが
できる。[Effects of the Invention] As described above, in the present invention, the control of the synchronous generator and the starting motor is separated by using the starting motor directly connected to the synchronous generator as an AC variable speed motor for starting. In addition, part of the circuit of the starting motor can be used as an excitation device for the synchronous generator while the generator is in operation, simplifying the configuration and control method and providing synchronous Generator operation can be provided.
第１図は本発明に係る同期発電機の運転方法の一実施例
の構成図、第２図は他の実施例を示す構成図、第３図は
従来の同期発電機の運転方法の一例を示す構成図である
。
１・・・同期発電機
３・・・同期発電電動機
４・・・制御装置
５．８・・・サイリスク変換器
６・・・界磁遮断器
７・・・起動電源変圧器
１０・・・直流遮断器Fig. 1 is a block diagram of one embodiment of the method of operating a synchronous generator according to the present invention, Fig. 2 is a block diagram of another embodiment, and Fig. 3 is an example of the method of operating a conventional synchronous generator. FIG. 1...Synchronous generator 3...Synchronous generator motor 4...Control device 5.8...Sirisk converter 6...Field circuit breaker 7...Starting power supply transformer 10...DC circuit breaker
Claims (1)
ら供給される交流電源をサイリスタ変換器にて交流／直
流変換した後、直流リアクトル及びサイリスタ変換器を
介して可変周波数の交流電源に再変換して同期発電機に
直結された起動用電動機に供給し、該起動用電動機を可
変速電動機として運転し同期発電機の起動を行い、同期
発電機の起動完了後においては、前記サイリスタ変換器
を交流／直流変換器として制御して同期発電機の励磁を
行うことを特徴とする同期発電機の運転方法。At startup, the AC power supplied from the main circuit via the startup power transformer is converted from AC to DC by the thyristor converter, and then reconverted to variable frequency AC power via the DC reactor and thyristor converter. and supplies the starting motor directly connected to the synchronous generator, and operates the starting motor as a variable speed motor to start the synchronous generator, and after the completion of starting the synchronous generator, the thyristor converter is A method of operating a synchronous generator, characterized in that the synchronous generator is excited by controlling it as an AC/DC converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21060089A JPH0378477A (en) | 1989-08-17 | 1989-08-17 | Operating method of synchronous generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21060089A JPH0378477A (en) | 1989-08-17 | 1989-08-17 | Operating method of synchronous generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0378477A true JPH0378477A (en) | 1991-04-03 |
Family
ID=16592013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21060089A Pending JPH0378477A (en) | 1989-08-17 | 1989-08-17 | Operating method of synchronous generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0378477A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006503536A (en) * | 2002-10-14 | 2006-01-26 | アルストム テクノロジー リミテッド | Shaft system start-up method and apparatus for carrying out the method |
| EP1830447A1 (en) * | 2006-03-02 | 2007-09-05 | ABB Research Ltd | Converter control unit using time-stamped voltage or current phasors |
| JP2008280860A (en) * | 2007-05-08 | 2008-11-20 | Nishishiba Electric Co Ltd | Gas turbine power generating apparatus and its starting method |
-
1989
- 1989-08-17 JP JP21060089A patent/JPH0378477A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006503536A (en) * | 2002-10-14 | 2006-01-26 | アルストム テクノロジー リミテッド | Shaft system start-up method and apparatus for carrying out the method |
| EP1830447A1 (en) * | 2006-03-02 | 2007-09-05 | ABB Research Ltd | Converter control unit using time-stamped voltage or current phasors |
| WO2007098632A2 (en) * | 2006-03-02 | 2007-09-07 | Abb Research Ltd | Converter control unit using time-stamped voltage or current phasors |
| WO2007098632A3 (en) * | 2006-03-02 | 2007-11-08 | Abb Research Ltd | Converter control unit using time-stamped voltage or current phasors |
| US7973427B2 (en) | 2006-03-02 | 2011-07-05 | Abb Research Ltd | Converter control unit |
| JP2008280860A (en) * | 2007-05-08 | 2008-11-20 | Nishishiba Electric Co Ltd | Gas turbine power generating apparatus and its starting method |
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