JP3187257B2 - Operation control device for AC excitation synchronous machine - Google Patents
Operation control device for AC excitation synchronous machineInfo
- Publication number
- JP3187257B2 JP3187257B2 JP23791394A JP23791394A JP3187257B2 JP 3187257 B2 JP3187257 B2 JP 3187257B2 JP 23791394 A JP23791394 A JP 23791394A JP 23791394 A JP23791394 A JP 23791394A JP 3187257 B2 JP3187257 B2 JP 3187257B2
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- Prior art keywords
- synchronous machine
- excitation synchronous
- excitation
- power
- circuit
- Prior art date
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- Control Of Eletrric Generators (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、交流励磁同期機の２
次側に接続された励磁用変換器を、系統の電圧，電流に
基づいて制御することで、その交流励磁同期機を可変速
運転する交流励磁同期機の運転制御装置に関するもので
ある。BACKGROUND OF THE INVENTION The present invention relates to an AC-excited synchronous machine.
The present invention relates to an AC excitation synchronous machine operation control device that controls an excitation converter connected to the next side based on the voltage and current of the system to operate the AC excitation synchronous machine at a variable speed.
【０００２】[0002]
【従来の技術】図７は例えば電気学会、電力技術研究会
（昭和６２年７月２８日、於名古屋）、発表論文「可変
揚水発電システムによる系統安定化効果のシミュレーシ
ョン解析」，Ｐ２６〜Ｐ２９、または日本電気協会誌、
昭和６２年１２月号「世界初の可変速発電システムにつ
いて」に示された従来の可変速揚水発電システムの回路
図であり、図において、１は交流励磁同期機（ＡＥＳ
Ｍ）の電機子である。2. Description of the Related Art FIG. 7 shows, for example, the Institute of Electrical Engineers of Japan and the Electric Power Technology Research Group (Nagoya, July 28, 1987), a paper "Simulation analysis of system stabilization effect by variable pumped storage power generation system", pp. 26-29. Or the Electric Association of Japan magazine,
FIG. 1 is a circuit diagram of a conventional variable speed pumped-storage power generation system shown in the December 1987 issue “About the world's first variable speed power generation system”, in which 1 is an AC excitation synchronous machine (AES).
M).
【０００３】また、２は交流励磁同期機の回転子（２次
コイル）、３は回転子２のシャフト、４は励磁用変圧
器、５は励磁用変換器、６は回転子２の回転位置／回転
数検出器、７は励磁用変換器５を制御する制御器、８は
電機子（１次コイル）に接続された変流器、９は計器用
変圧器、４１は界磁遮断器、５０は主変圧器、５２は発
電機遮断器、１５２は高圧側遮断器である。Reference numeral 2 denotes a rotor (secondary coil) of an AC excitation synchronous machine, 3 denotes a shaft of the rotor 2, 4 denotes an excitation transformer, 5 denotes an excitation converter, and 6 denotes a rotational position of the rotor 2. / Rotational speed detector, 7 is a controller for controlling the excitation converter 5, 8 is a current transformer connected to the armature (primary coil), 9 is a transformer for an instrument, 41 is a field breaker, 50 is a main transformer, 52 is a generator circuit breaker, and 152 is a high voltage side circuit breaker.
【０００４】次に動作について説明する。交流励磁同期
機を可変速で運転するには、この交流励磁同期機を２次
励磁する方式が通常採用され、この交流励磁同期機の回
転数が変わっても、系統周波数と一致するようにスベリ
分だけ２次励磁により周波数を補正すれば、系統との並
列運転が可能である。Next, the operation will be described. In order to operate the AC excitation synchronous machine at a variable speed, a method of secondary excitation of the AC excitation synchronous machine is usually adopted, and even if the rotation speed of the AC excitation synchronous machine changes, it is slid so as to match the system frequency. If the frequency is corrected by the secondary excitation by the amount, parallel operation with the system is possible.
【０００５】従って、電機子１が接続される系統の電
圧，電流を計器用変圧器１０および変流器８で検出し、
これらと回転位置の回転数検出器６の出力とに基づい
て、制御器７により励磁用変換器５を制御することで、
上記並列運転が可能になる。Accordingly, the voltage and current of the system to which the armature 1 is connected are detected by the instrument transformer 10 and the current transformer 8,
By controlling the excitation converter 5 by the controller 7 based on these and the output of the rotational speed detector 6 at the rotational position,
The above parallel operation becomes possible.
【０００６】一方、２次励磁装置としては、交流から直
接に交流を作るサイクロコンバータ方式や交流から一度
直流に変換しさらに交流を作るコンバータとインバータ
からなる方式などが採用され、これらを用いて設定され
た電圧，回転数，電力になるように励磁用変換器５を制
御器７により制御して交流励磁同期機を運転する。On the other hand, as the secondary excitation device, a cycloconverter system for directly generating an alternating current from an alternating current or a system comprising a converter and an inverter for converting an alternating current to a direct current and further generating an alternating current are employed. The AC converter 5 is operated by controlling the excitation converter 5 by the controller 7 so that the voltage, the rotation speed, and the electric power become the specified.
【０００７】[0007]
【発明が解決しようとする課題】従来の交流励磁同期機
の運転制御装置は以上のように構成されており、制御器
７により指令電力になるように励磁用変換器５を制御し
ているため、系統安定度を交流励磁同期機により積極的
に向上させるための制御装置は備えておらず、系統安定
化の目的では２次励磁装置の能力を十分には発揮してい
ないなどの問題点があった。The operation control device of the conventional AC excitation synchronous machine is configured as described above, and the controller 7 controls the excitation converter 5 so as to obtain the command power. However, there is no control device to positively improve the system stability by the AC excitation synchronous machine, and the secondary excitation device does not fully utilize the capability for the purpose of system stability. there were.
【０００８】また、従来から系統安定化のため静止形無
効電力発生装置（ＳＶＧ：Ｓｔａｔｉｃ Ｖａｒ Ｇｅ
ｎｅｒａｔｏｒ），静止形無効電力補償装置（ＳＶＣ：
Ｓｔａｔｉｃ Ｖａｒ Ｃｏｎｐｅｎｓａｔｏｒ），電
力系統電圧調整装置（ＰＳＶＲ：Ｐｏｗｅｒ Ｓｙｓｔ
ｅｍ Ｖｏｌｔａｇｅ Ｒｅｇｕｌａｔｏｒ），系統安
定化装置（ＰＳＳ：Ｐｏｗｅｒ Ｓｙｓｔｅｍ Ｓｔａ
ｂｉｌｉｚｅｒ）等が用いられており、将来的には超伝
導エネルギ貯蔵装置（ＳＭＥＳ：Ｓｕｐｅｒｃｏｎｄｕ
ｃｔｉｖｅ Ｍａｇｎｅｔｉｃ Ｅｎｅｒｇｙ Ｓｔｏ
ｒａｇｅ），フレキシブルＡＣ送電システム（ＦＡＣＴ
Ｓ：Ｆｌｅｘｉｂｌｅ ＡＣ Ｔｒａｎｓｍｉｓｓｉｏ
ｎ Ｓｙｓｔｅｍ）等の適用が考えられているが、これ
らについてはそれぞれ一長一短があり、無効電力の供給
特性，価格，実現の可能性等の問題点があった。[0008] Conventionally, a static var generator (SVG: Static Var Ge) has been used for stabilizing the power system.
nerator), static var compensator (SVC:
Static Var Compensator, Power System Voltage Regulator (PSVR: Power System)
em Voltage Regulator, Power System Stabilizer (PSS: Power System Sta)
and a superconducting energy storage device (SMES: Supercondu) in the future.
active Magnetic Energy Sto
range), Flexible AC power transmission system (FACT)
S: Flexible AC Transmission
n System), etc., are considered, but each of them has advantages and disadvantages, and has problems such as supply characteristics of reactive power, price, and feasibility.
【０００９】この発明は上記のような問題点を解消する
ためになされたものであり、負荷変動により電力動揺が
発生した場合でも、系統が崩壊するのを防止でき、系統
安定度の向上に積極的に寄与できる交流励磁同期機の運
転制御装置を得ることを目的とする。The present invention has been made to solve the above problems, and can prevent the system from collapsing even when power fluctuations occur due to load fluctuation, and actively improve the system stability. It is an object of the present invention to obtain an operation control device for an AC excitation synchronous machine that can contribute to the environment.
【００１０】請求項２の発明は交流励磁同期機が接続さ
れた至近端超高圧母線の電圧または周波数が変動した場
合にも、これらを抑制することで、系統安定度の向上に
寄与できるとともに、良質の電力を供給できる交流励磁
同期機の運転制御装置を得ることを目的とする。According to the second aspect of the present invention, even when the voltage or the frequency of the ultra-high voltage bus at the near end to which the AC excitation synchronous machine is connected fluctuates, by suppressing these fluctuations, it is possible to contribute to improvement of the system stability and Another object of the present invention is to provide an operation control device for an AC excitation synchronous machine that can supply high-quality power.
【００１１】請求項３の発明は電源脱落や負荷の急増減
に伴う負荷突変が発生した場合にも、一時的にこれらを
補償する制御を実施し、瞬時に受給バランスを図って速
やかな系統安定化に寄与できる交流励磁同期機の運転制
御装置を得ることを目的とする。According to a third aspect of the present invention, even when a sudden change in load occurs due to a power loss or a sudden increase or decrease in load, a control for temporarily compensating for such a change is implemented to instantaneously balance the reception and promptly improve the system. An object of the present invention is to obtain an operation control device for an AC excitation synchronous machine that can contribute to stabilization.
【００１２】請求項４の発明は同一発電所において交流
励磁同期機に直流励磁同期機を並入する際の入力急増を
緩慢に制御することで、系統の周波数や電圧降下を発生
させずに、系統安定度の向上に寄与できる交流励磁同期
機の運転制御装置を得ることを目的とする。According to a fourth aspect of the present invention, a sudden increase in input when a DC excitation synchronous machine is inserted in an AC excitation synchronous machine in the same power plant is slowly controlled, thereby preventing system frequency and voltage drop from occurring. An object of the present invention is to obtain an operation control device for an AC excitation synchronous machine that can contribute to improvement of system stability.
【００１３】請求項５の発明は発電機の内部相差角が増
大または不安定となった場合に、これらを抑制または低
減することによって、電圧変動や電力動揺を抑制でき、
系統安定度の向上に寄与できる交流励磁同期機の運転制
御装置を得ることを目的とする。According to a fifth aspect of the present invention, when the internal phase difference angle of the generator increases or becomes unstable, it can be suppressed or reduced to suppress voltage fluctuations and power fluctuations.
An object of the present invention is to obtain an operation control device for an AC excitation synchronous machine that can contribute to improvement of system stability.
【００１４】[0014]
【課題を解決するための手段】請求項１の発明に係る交
流励磁同期機の運転制御装置は、交流励磁同期機が送電
線路を介して接続される発電所および負荷の電力負荷角
を検出する電力負荷角演算回路と、該電力負荷角演算回
路が検出した電力負荷角を系統安定化方向に制御する指
令を発する系統安定化運転指令回路とを設けて、制御器
に、上記系統の電力に代わり上記系統安定化運転指令回
路からの指令に従って、ｑ軸制御により上記電力負荷角
を小さくするように、励磁用変換器を制御させるように
したものである。According to a first aspect of the present invention, there is provided an operation control apparatus for an AC excitation synchronous machine which detects a power load angle of a power plant and a load to which the AC excitation synchronous machine is connected via a transmission line. provided a power load angle computing circuit, and a system stabilizing operation command circuit power load angle said power load angle calculation circuit detects issues a command to control the system stabilizing direction, to the controller, the power of the system Instead , the excitation converter is controlled so that the power load angle is reduced by q-axis control in accordance with a command from the system stabilization operation command circuit.
【００１５】請求項２の発明に係る交流励磁同期機の運
転制御装置は、交流励磁同期機が接続された至近端超高
圧母線の電圧または周波数が規定値を超えて変動したか
否かを検出する電圧／周波数検出回路を設け、上記電圧
または周波数が規定値を超えて変動した場合に、これら
を系統安定化方向に制御する指令を発する系統安定化運
転指令回路と、上記系統の電圧、電力に代わり上記系統
安定化運転指令回路からの指令に従って、一定時間、交
流励磁同期機のｄ軸を電圧維持優先制御するように、ま
たはｑ軸を周波数優先制御するように、励磁用変換器を
制御する制御器に指令を与えるようにしたものである。According to a second aspect of the present invention, there is provided an operation control device for an AC excitation synchronous machine, which determines whether a voltage or a frequency of a near-end ultra-high voltage bus to which the AC excitation synchronous machine is connected fluctuates beyond a prescribed value. a voltage / frequency detection circuit that detects provided, when the voltage or frequency fluctuates beyond a predetermined value, these
System operation that issues a command to control the
Circuit command and the above system instead of the voltage and power of the above system
In accordance with a command from the stabilization operation command circuit, a controller for controlling the converter for excitation so that the d-axis of the AC excitation synchronous machine is voltage-priority controlled or the q-axis is frequency-prioritized for a certain period of time. It is designed to give a command.
【００１６】請求項３の発明に係る交流励磁同期機の運
転制御装置は、交流励磁同期機が送電線路を介して接続
される発電所に電源脱落検出回路または上記送電線路に
接続された負荷側の負荷突変検出回路を設け、これらの
電源脱落検出回路または負荷突変検出回路による電源脱
落または負荷突変の検出結果に従って、系統安定化運転
指令回路により交流励磁同期機のｑ軸制御により、一時
的に、負荷突変や負荷脱落を補う系統安定化運転指令回
路と、上記系統の電力に代わり上記系統安定化運転指令
回路からの指令に従って、励磁用変換器を制御する制御
器に指令を与えるようにしたものである。According to a third aspect of the present invention, there is provided an operation control apparatus for an AC excitation synchronous machine, wherein a power loss detection circuit or a load side connected to the power transmission line is connected to a power plant to which the AC excitation synchronous machine is connected via a transmission line. According to the detection result of the power loss or the load sudden change by the power loss detection circuit or the load sudden change detection circuit, the q-axis control of the AC excitation synchronous machine by the system stabilization operation command circuit, The system stabilization operation command that temporarily compensates for load sudden changes and load drop
Road and the system stabilization operation command in place of the system power
According to a command from the circuit , a command is given to a controller for controlling the excitation converter.
【００１７】請求項４の発明に係る交流励磁同期機の運
転制御装置は、交流励磁同期機が設けられる発電所に直
流励磁同期機を併設し、上記交流励磁同期機が系統に並
入されて指令入力運転された後に、上記直流励磁同期機
を上記系統に並入される際に、入力調整器によって、上
記交流励磁同期機の入力を上記直流励磁同期機の入力増
に合わせて自動的に絞るようにしたものである。According to a fourth aspect of the present invention, there is provided an operation control device for an AC excitation synchronous machine, wherein a DC excitation synchronous machine is provided in a power plant in which the AC excitation synchronous machine is provided, and the AC excitation synchronous machine is arranged in a system. After the command input operation, when the DC excitation synchronous machine is inserted into the system, the input of the AC excitation synchronous machine is automatically adjusted by the input adjuster in accordance with the input increase of the DC excitation synchronous machine. It is made to squeeze.
【００１８】請求項５の発明に係る交流励磁同期機の運
転制御装置は、交流励磁同期機が送電線路を介して接続
される発電所に設けられて、これの内部起電力および発
電機電流間の内部相差角を検出する内部相差角検出回路
を有し、該内部相差角検出回路で検出した内部相差角が
不安定となったとき、系統安定化運転指令回路により、
該内部相差角を小さくしまたはその動揺を抑制する方向
に指令を与える系統安定化運転指令回路と、この系統安
定化運転指令回路からの指令に基づいて上記交流励磁同
期機のｄ軸またはｑ軸を制御するように、上記励磁用変
換器を制御する制御器に指令を与えるようにしたもので
ある。According to a fifth aspect of the present invention, there is provided an operation control device for an AC excitation synchronous machine, which is provided in a power plant to which the AC excitation synchronous machine is connected via a transmission line, and has a function of controlling the internal electromotive force and the generator current. When the internal phase difference angle detected by the internal phase difference angle detection circuit becomes unstable, the system stabilization operation command circuit
A system stabilization operation command circuit for giving a command in the direction of reducing the internal phase difference angle or suppressing its fluctuation,
A command is given to a controller that controls the excitation converter so as to control the d-axis or the q-axis of the AC excitation synchronous machine based on a command from the stabilization operation command circuit .
【００１９】[0019]
【作用】請求項１の発明における交流励磁同期機の運転
制御装置は、電力―負荷角特性が負荷変動により動揺し
た場合に、負荷変動が異常となる前の所定の負荷角を検
出して、系統安定化運転指令により、通常の運転指令に
代えて、ｑ軸制御により急速に上記負荷角を小さくする
ように、電力を絞り込む指令を系統安定化運転指令回路
から、交流励磁同期機の２次側に接続された制御器に与
えて、電力負荷角を小さく抑制する。The operation control device for an AC excitation synchronous machine according to the present invention detects a predetermined load angle before the load fluctuation becomes abnormal when the power-load angle characteristic fluctuates due to the load fluctuation, In response to the system stabilization operation command, instead of the normal operation command, a command to narrow down the electric power is quickly sent from the system stabilization operation command circuit to reduce the load angle by the q-axis control from the secondary of the AC excitation synchronous machine. To the controller connected to the side to reduce the power load angle.
【００２０】請求項２の発明における交流励磁同期機の
運転制御装置は、電圧／周波数検出回路により交流励磁
同期機が接続された至近端超高圧母線の電圧または周波
数を検出し、これらの電圧や周波数が規定値を超えて変
動した場合には、系統安定化運転指令回路から一定時
間、通常の運転指令に代えて、ｄ軸の電圧維持優先制御
またはｑ軸の周波数維持優先制御の各信号を出力して、
交流励磁同期機の２次側に接続された制御器に与え、上
記電圧または周波数を規定値内に抑える。According to a second aspect of the present invention, there is provided an operation control device for an AC excitation synchronous machine, wherein a voltage / frequency detection circuit detects a voltage or a frequency of a very-high-end ultra-high voltage bus to which the AC excitation synchronous machine is connected, and detects these voltages. If the frequency or frequency fluctuates beyond the specified value, each signal of the d-axis voltage maintenance priority control or the q-axis frequency maintenance priority control is replaced by the system stabilization operation command circuit for a certain period of time instead of the normal operation command. And output
The voltage or the frequency is supplied to a controller connected to the secondary side of the AC excitation synchronous machine to keep the voltage or the frequency within a specified value.
【００２１】請求項３の発明における交流励磁同期機の
運転制御装置は、電源端や負荷端にそれぞれ設けた電源
脱落検出回路や負荷突変検出回路が電源脱落，負荷突変
を検出したとき、系統安定化運転指令回路に、ｑ軸制御
により一時的に負荷突変や電源突変を補う制御を行うよ
うに、制御器に対し制御指令を発生させる。According to a third aspect of the present invention, there is provided an operation control device for an AC excitation synchronous machine, wherein a power loss detection circuit or a load sudden change detection circuit provided at a power supply end or a load end respectively detects a power loss or a load sudden change. A control command is issued to the controller so that the system stabilization operation command circuit performs control to temporarily compensate for load sudden change or power sudden change by q-axis control.
【００２２】請求項４の発明における交流励磁同期機の
運転制御装置は、同一発電所の交流励磁同期機に対し、
直流励磁同期機を系統並入した際の入力急増を、入力調
整器によって自動的に絞りをかけて抑制し、上記入力急
増に伴う系統の動揺を抑制可能にする。According to a fourth aspect of the present invention, there is provided an operation control apparatus for an AC excitation synchronous machine,
An input adjuster automatically restricts and suppresses a sudden increase in input when a DC excitation synchronous machine is lined up in the system, thereby making it possible to suppress system fluctuations caused by the sudden increase in input.
【００２３】請求項５の発明における交流励磁同期機の
運転制御装置は、発電機の内部相差角が動揺して不安定
となった場合には、系統安定化運転指令回路により上記
発電機の内部相差角を小さくする方向にまたは動揺を抑
制する方向に、交流励磁同期機のｄ軸制御により制御器
の電圧または電力を制御させて、系統の安定化を図る。According to a fifth aspect of the present invention, in the operation control device for an AC excitation synchronous machine, when the internal phase difference angle of the generator becomes unstable due to fluctuation, the system stabilization operation command circuit supplies the internal control signal to the inside of the generator. The voltage or power of the controller is controlled by the d-axis control of the AC excitation synchronous machine in the direction of reducing the phase difference angle or in the direction of suppressing the fluctuation, thereby stabilizing the system.
【００２４】[0024]
実施例１．以下、この発明の一実施例を図について説明
する。図１において、１０１は山側発電所Ａの発電機、
１０２は変圧器、１０３は変流器、１０４は計器用変圧
器、１０５は回転子励磁位置検出器、１０６は山側発電
所監視装置としての電源脱落検出回路または電力負荷角
演算回路または内部相差角検出回路である。Embodiment 1 FIG. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 101 denotes a generator of a mountain side power plant A,
102 is a transformer, 103 is a current transformer, 104 is an instrument transformer, 105 is a rotor excitation position detector, 106 is a power loss detection circuit or a power load angle calculation circuit or an internal phase difference angle as a mountainside power station monitoring device. It is a detection circuit.
【００２５】また、１０７は交流励磁同期機Ｓとともに
発電所Ｂの至近端超高圧母線Ｄに並列接続された定速機
としての直流励磁同期機、１０８は定速機１０７と至近
端超高圧母線Ｄとの間に接続された変圧器、１０９は負
荷１１９と各発電所Ａ，Ｂとを結ぶ送電線路ｌに入れた
変流器、１１０は計器用変圧器、１１１は電圧／周波数
検出回路または電力負荷角演算回路としての交流励磁同
期機側発電所の監視装置、１１２は可変速制御部であ
り、この可変速制御部１１２の詳細は図２に示す。Further, 107 is a DC excitation synchronous machine as a constant speed machine connected in parallel with the AC excitation synchronous machine S to the ultra-high voltage bus D at the near end of the power plant B, and 108 is a constant speed machine 107 A transformer connected between the high-voltage bus D, 109 is a current transformer inserted in a transmission line l connecting the load 119 to each of the power plants A and B, 110 is a transformer for an instrument, and 111 is voltage / frequency detection. A monitoring device for the AC-excited synchronous machine-side power plant as a circuit or a power load angle calculation circuit, 112 is a variable speed control unit, and details of the variable speed control unit 112 are shown in FIG.
【００２６】さらに、１１３は里側発電所Ｃの発電機、
１１４は変圧器、１１５は変流器、１１６は計器用変圧
器、１１７は回転子磁極位置検出器、１１８は里側発電
所監視装置としての電源脱落検出回路または電力負荷角
演算回路または内部相差角検出回路、１１９は里側の負
荷、１２０は負荷電流を検出する変流器、１２１は計器
用変圧器、１２２は負荷監視装置としての負荷突変検出
回路または電力負荷角演算回路である。Further, 113 is a generator of the village side power station C,
114 is a transformer, 115 is a current transformer, 116 is an instrument transformer, 117 is a rotor magnetic pole position detector, 118 is a power loss detection circuit or a power load angle calculation circuit or an internal phase difference as a monitoring device for a village power station. An angle detection circuit, 119 is a load on the village side, 120 is a current transformer for detecting a load current, 121 is a transformer for an instrument, and 122 is a load sudden change detection circuit or a power load angle calculation circuit as a load monitoring device.
【００２７】なお、このほかの図６に示したものと同一
の構成部分には同一符号を付して、その重複する説明を
省略する。The same components as those shown in FIG. 6 are denoted by the same reference numerals, and redundant description will be omitted.
【００２８】次に、上記可変速制御部１１２の詳細を図
２について説明する。同図において、１は交流励磁同期
機Ｓの電機子、２は同じく回転子、３はシャフト、１１
はインバータ制御器で、これには回転子２に２次励磁電
流を供給する励磁用変換器としてのインバータ１２が接
続されている。Next, details of the variable speed control unit 112 will be described with reference to FIG. In the figure, 1 is an armature of the AC excitation synchronous machine S, 2 is a rotor, 3 is a shaft, 11
Is an inverter controller, to which an inverter 12 as an exciting converter for supplying a secondary exciting current to the rotor 2 is connected.
【００２９】１３はコンバータで、２次励磁用の変圧器
４から得られる交流を直流に変換し、その直流出力をイ
ンバータ１２に供給するものである。８はラプラス演算
子，ｄ軸制御時定数，ｄ軸制御比例ゲインに従って動作
する電圧制御回路で、計器用変圧器９を介して得られる
電圧Ｖの、電圧比較器１５における基準電圧Ｖs との比
較出力を入力とする。A converter 13 converts an alternating current obtained from the secondary excitation transformer 4 into a direct current, and supplies the direct current output to the inverter 12. 8 is a voltage control circuit which operates Laplace operator, d-axis control time constant, in accordance with d-axis control proportional gain, the voltage V obtained through the instrument transformer 9, the reference voltage V s in the voltage comparator 15 Input the comparison output.
【００３０】１７は電力検出器で、変流器５および計器
用変圧器９から得られた電流，電圧に基づいて電力を求
める。１８は電力検出器１７の出力Ｐを基準出力Ｐ0 と
比較する電力比較器、１９はその比較結果に基づき、ラ
プラス演算子、ｑ軸制御時定数，ｑ軸制御比例ゲインに
従って電力偏差を補正する電力偏差補正回路である。Reference numeral 17 denotes a power detector which obtains power based on the current and voltage obtained from the current transformer 5 and the instrument transformer 9. Reference numeral 18 denotes a power comparator that compares the output P of the power detector 17 with the reference output P 0, and 19 corrects a power deviation based on the comparison result according to a Laplace operator, a q-axis control time constant, and a q-axis control proportional gain. This is a power deviation correction circuit.
【００３１】２０は電力偏差補正回路１９および後述の
回転数偏差補正回路２２の各出力を加算する加算器、１
４はこの加算出力をラプラス演算子，ｑ軸制御時定数，
ｑ軸制御比例ゲインに従って演算出力する電力制御回路
である。An adder 20 adds each output of the power deviation correction circuit 19 and a rotational speed deviation correction circuit 22, which will be described later.
4 is the Laplace operator, q-axis control time constant,
It is a power control circuit that calculates and outputs according to the q-axis control proportional gain.
【００３２】また、２１は回転位置・回転数検出器６の
出力Ｎと目標回転数演算器２６からの基準回転数Ｎ0 と
を比較する回転数比較器で、この比較結果は上記の回転
数偏差補正回路２２で電力制御上限回転数，２次励磁装
置制御可能な下限回転数，回転制御比例ゲインに従って
偏差補正処理された後、上記加算器２０に入力されて、
電力偏差補正回路１９の各出力と加算される。Reference numeral 21 denotes a rotational speed comparator for comparing the output N of the rotational position / rotational speed detector 6 with the reference rotational speed N 0 from the target rotational speed calculator 26. The deviation correction circuit 22 performs deviation correction processing according to the power control upper limit rotation speed, the lower limit rotation speed at which the secondary excitation device can be controlled, and the rotation control proportional gain, and is input to the adder 20.
It is added to each output of the power deviation correction circuit 19.
【００３３】また、インバータ制御器１１において、３
１は位相検出器、３２は座標変換機能を有する３相／２
相変換器で、位相検出器３１および変流器５に接続され
ている。In the inverter controller 11, 3
1 is a phase detector, 32 is 3 phase / 2 having a coordinate conversion function
The phase converter is connected to the phase detector 31 and the current transformer 5.
【００３４】さらに、２７は電力制御回路１４および３
相／２相変換器３２の各出力の差を求める減算器、２８
はｑ軸制御回路、２９は電圧制御回路８と３相／２相変
換器３２の各出力の差をとる減算器、３０はｄ軸制御回
路、３３はｑ軸，ｄ軸制御出力を２相／３相に座標変換
する２相／３相変換器である。Further, 27 is the power control circuits 14 and 3
A subtractor 28 for calculating a difference between outputs of the phase / two-phase converter 32;
Is a q-axis control circuit, 29 is a subtractor that calculates the difference between the outputs of the voltage control circuit 8 and the three-phase / two-phase converter 32, 30 is a d-axis control circuit, and 33 is a two-phase q-axis and d-axis control output. This is a two-phase / three-phase converter that performs coordinate conversion to a three-phase.
【００３５】次に動作について説明する。いま、一例と
して、図１に示す負荷１１９の電力―負荷角特性が図３
に示すような場合において、特性曲線上のＣ点で安定に
運転しているとき、急な負荷変動によりＡ点，Ｂ点の区
間で電力動揺が発生した場合について説明する。この場
合には、Ａ点が電力負荷角として９０°以上となると、
系統の安定度は維持できず、系統が崩壊してしまうこと
は周知の通りである。Next, the operation will be described. Now, as an example, the power-load angle characteristics of the load 119 shown in FIG.
In the case shown in FIG. 7, a case will be described in which, when the vehicle is stably operated at the point C on the characteristic curve, power fluctuation occurs in the section between the points A and B due to a sudden load change. In this case, when the point A becomes 90 ° or more as the power load angle,
It is well known that the stability of the system cannot be maintained and the system collapses.
【００３６】従って、この発明では、Ａ点の手前、例え
ばＡ´点を負荷監視装置としての電力負荷角演算回路１
２２で検出し、可変速制御部１１２の系統安定化運転指
令回路２３に伝送し、この系統安定化運転指令回路２３
が受けた図３に示すＡ点の不安定状況を抑制すべく、制
御指令を出力し、通常のＡＦＣ運転の信号、すなわち電
圧制御回路８および電力制御回路１４からの指令に代え
て、切換回路２４にてスイッチ２５を切り換えることに
よって得られる系統安定化運転指令回路２３からの指令
に切り換え、ｑ軸制御により急速に負荷角を小さくする
ように電力を絞り込む。Therefore, in the present invention, the point before the point A, for example, the point A 'is set to the power load angle calculation circuit 1 as a load monitoring device.
22 and transmits the detected signal to the system stabilization operation command circuit 23 of the variable speed control unit 112.
In order to suppress the unstable situation at the point A shown in FIG. 3, the control circuit outputs a control command, and replaces the normal AFC operation signal, that is, the command from the voltage control circuit 8 and the power control circuit 14, with a switching circuit. The command is switched to the command from the system stabilization operation command circuit 23 obtained by switching the switch 25 at 24, and the electric power is narrowed down by the q-axis control so as to rapidly reduce the load angle.
【００３７】すなわち、上記電力負荷角演算回路１２２
は、図３に示す負荷角δ2 を検出するために、計器用変
圧器１２１および変流器１２０からそれぞれ電圧および
電流を得て、これらから求めた電力Ｐ2 とともに系統安
定化運転指令回路２３に入力する。That is, the power load angle calculation circuit 122
In order to detect the load angle [delta] 2 shown in FIG. 3, with the respective voltage and current from the potential transformer 121 and current transformer 120, the system stabilizing operation command circuit 23 with power P 2 obtained from these To enter.
【００３８】このため、系統安定化指令回路２３では、
山側発電所監視装置としての電力負荷角演算回路１０６
からの出力信号と上記電力負荷角演算回路１２２からの
出力信号とに基づいて、負荷角δ2 を演算により求め
る。Therefore, in the system stabilization command circuit 23,
Power load angle calculation circuit 106 as a mountain side power station monitoring device
The load angle δ 2 is obtained by calculation based on the output signal from the power load angle calculation circuit 122 and the output signal from the power load angle calculation circuit 122.
【００３９】一方、山側発電所では、計器用変圧器１０
４および変流器１０３によりそれぞれ線路の電圧，電流
を検出し、山側発電所監視装置としての電力負荷角演算
回路１０６は、これらの電圧，電流とこれらから得た電
力Ｐ1 とともに系統安定化運転指令回路２３に入力す
る。On the other hand, in the mountain side power plant, the
Voltages of lines by 4 and current transformer 103 detects a current, power load angle calculation circuit 106 as a mountain plant monitoring device, these voltages, currents and system stabilizing operation with power P 1 from these Input to the command circuit 23.
【００４０】このため、この系統安定化運転指令回路２
３では、電力負荷用演算回路１２２および電力負荷角演
算回路１０６からの出力信号に基づいて、負荷角δ1 を
演算により求める。Therefore, the system stabilizing operation command circuit 2
In 3, the load angle δ 1 is obtained by calculation based on the output signals from the power load calculation circuit 122 and the power load angle calculation circuit 106.
【００４１】また、系統安定化運転指令回路２３は電力
がＡからＡ´に達したことで、切換回路２４に信号を出
力し、このため切換回路２４はスイッチ２５を、その系
統安定化運転指令回路２３とインバータ制御器１１とを
接続するように切り換える。The system stabilization operation command circuit 23 outputs a signal to the switching circuit 24 when the power reaches A 'from A, and the switching circuit 24 switches the switch 25 to the system stabilization operation command. Switching is performed so that the circuit 23 and the inverter controller 11 are connected.
【００４２】このとき、系統安定化運転指令回路２３は
不安定抑制信号としてＩq の指令値とＩd の指令値をス
イッチ２５を介してインバータ制御器１１に入力する。[0042] At this time, the system stabilizing operation command circuit 23 a command value of the command value and I d of I q via the switch 25 is input to the inverter controller 11 as instability suppression signal.
【００４３】このようにして、一定時間、Ａ点の電力動
揺を制御して、安定にＡ´点以下になるように、電力負
荷角演算回路１２２の情報を系統安定化運転回路２３に
伝送して、安定化運転を行うこととなる。In this manner, the power fluctuation at the point A is controlled for a certain period of time, and the information of the power load angle calculation circuit 122 is transmitted to the system stabilization operation circuit 23 so that the power fluctuation is stably at or below the point A '. Thus, a stable operation is performed.
【００４４】実施例２．次にこの発明の他の実施例の動
作について、図１と図２により説明する。まず、交流励
磁同期機Ｓの電機子１が接続された至近端超高圧母線Ｄ
の電圧または周波数を、計測用変圧器１１０を介して上
記監視装置としての電圧／周波数検出回路１１１に取り
込んで検出し、その信号を図２の系統安定化運転指令回
路２３に伝送する。Embodiment 2 FIG. Next, the operation of another embodiment of the present invention will be described with reference to FIGS. First, the very-high-end ultrahigh-voltage bus D to which the armature 1 of the AC excitation synchronous machine S is connected
The voltage or frequency is taken into the voltage / frequency detection circuit 111 as the monitoring device via the measuring transformer 110 and detected, and the signal is transmitted to the system stabilization operation command circuit 23 in FIG.
【００４５】そして、上記電圧または周波数が規定値以
上変動した場合には、上記切換回路２４にてスイッチ２
５を切り換えて、一定時間、交流励磁同期機Ｓの本来の
機能、例えばＡＦＣのための、電圧制御回路８および電
力制御回路１４からのインバータ制御器１１への制御信
号の出力を一時停止して、電機子１のｄ軸を電圧維持優
先制御するか、ｑ軸を周波数優先制御するために一時独
占制御するように、系統安定化運転指令回路２３の信号
でインバータ制御器１１およびインバータ１２を制御す
る。When the voltage or the frequency fluctuates more than a specified value, the switching circuit 24
5 to temporarily stop the output of the control signal from the voltage control circuit 8 and the power control circuit 14 to the inverter controller 11 for the original function of the AC excitation synchronous machine S, for example, AFC for a certain time. The inverter controller 11 and the inverter 12 are controlled by the signal of the system stabilization operation command circuit 23 so that the d-axis of the armature 1 is voltage-prioritized control or the q-axis is temporarily monopolized for the frequency priority control. I do.
【００４６】こうすることにより、電圧または周波数を
規定値以内に抑制し、抑制を完了したら、電圧／周波数
検出回路１１１および系統安定化運転指令回路２３にて
切換回路２４を作動させ、スイッチ２５を通常の運転に
戻す。By doing so, the voltage or frequency is suppressed to within a specified value, and when the suppression is completed, the switching circuit 24 is operated by the voltage / frequency detection circuit 111 and the system stabilization operation command circuit 23, and the switch 25 is turned on. Return to normal operation.
【００４７】実施例３．次にこの発明のさらに他の実施
例の動作について、図１と図２により説明する。この実
施例では、図１にて負荷端に設けた上記負荷監視装置と
しての負荷突変検出回路１２２や電源端に設けた山側発
電所監視装置および里側発電所監視装置である電源脱落
検出回路１０６，１１８により、その負荷の突変量を検
出する。Embodiment 3 FIG. Next, the operation of still another embodiment of the present invention will be described with reference to FIGS. In this embodiment, a load sudden change detection circuit 122 as the load monitoring device provided at the load terminal in FIG. 1 and a power supply disconnection detection circuit as a mountain side power plant monitoring device and a village side power plant monitoring device provided at the power supply terminal. With 106 and 118, the sudden change amount of the load is detected.
【００４８】次に、この検出した負荷の突変量を可変速
制御部１１２の系統安定化運転指令回路２３に伝送し
て、交流励磁同期機Ｓの通常運転による例えばＡＦＣ制
御信号の電圧制御回路８や電力制御回路１４からインバ
ータ制御器１１への入力を、上記と同様にして一時停止
し、系統安定化運転指令回路２３からスイッチ２５を介
してインバータ制御器１１へ制御信号を入力する。Next, the detected sudden change amount of the load is transmitted to the system stabilization operation command circuit 23 of the variable speed control unit 112, and the voltage control circuit 8 for the AFC control signal by the normal operation of the AC excitation synchronous machine S is transmitted. The input from the power control circuit 14 to the inverter controller 11 is temporarily stopped in the same manner as described above, and a control signal is input from the system stabilization operation command circuit 23 to the inverter controller 11 via the switch 25.
【００４９】このため、インバータ制御器１１はｑ軸制
御により一時的に負荷や電源突変を補う制御をして受給
バランスを維持し、系統安定化が計られる。そして、動
揺が抑制されたら、系統安定化運転指令回路２３にて切
換回路２４を作動させ、スイッチ２５を元に戻して、交
流励磁同期機Ｓを通常の運転に戻す。For this reason, the inverter controller 11 temporarily controls the load and the sudden change of the power supply by the q-axis control to maintain the receiving balance and stabilize the system. Then, when the oscillation is suppressed, the switching circuit 24 is operated by the system stabilization operation command circuit 23, the switch 25 is returned, and the AC excitation synchronous machine S is returned to the normal operation.
【００５０】すなわち、この実施例では、負荷突変検出
回路１２２は計器用変圧器１２１から負荷１１９に入力
される電圧を取り込み、変流器１２０より負荷電流を取
り込んで、電力を求めて負荷突変を検出し、この検出結
果を系統安定化運転指令回路２３に入力する。That is, in this embodiment, the load sudden change detection circuit 122 takes in the voltage input from the instrument transformer 121 to the load 119, takes in the load current from the current transformer 120, and obtains the power to obtain the load sudden change. A change is detected, and the detection result is input to the system stabilization operation command circuit 23.
【００５１】一方、上記電源脱落検出回路１０６は計器
用変圧器１０４を介して発電機１０１の電圧を取り込
み、変流器１０３を介して発電機１０１の電流を取り込
んで、これらから電力を求めて電源脱落を検出し、この
検出結果を系統安定化運転指令回路２３に入力するOn the other hand, the power loss detection circuit 106 takes in the voltage of the generator 101 through the instrument transformer 104, takes in the current of the generator 101 through the current transformer 103, and obtains electric power therefrom. The power loss is detected, and the detection result is input to the system stabilization operation command circuit 23.
【００５２】さらに、電源脱落検出回路１１８は計器用
変圧器１１６を介して発電機１１３の電圧を取り込み変
流器１１５を介して発電機１１３の電流を取り込み、こ
れらから電力を求めて、電源脱落を検出し、この検出結
果を系統安定化運転指令回路２３に入力する。Further, the power loss detection circuit 118 captures the voltage of the generator 113 via the instrument transformer 116, captures the current of the generator 113 via the current transformer 115, obtains power from these, and obtains the power failure. And the detection result is input to the system stabilization operation command circuit 23.
【００５３】このため、この系統安定化運転指令回路２
３では、上記各検出結果に応じて補償すべきｑ軸制御量
を設定し、これをインバータ制御器１１に指令するよう
に機能する。Therefore, the system stabilization operation command circuit 2
In 3, a function is set to set a q-axis control amount to be compensated according to each of the above detection results, and to instruct this to the inverter controller 11.
【００５４】実施例４．次にこの発明の別の実施例の動
作について、図１，図２および図５により説明する。図
１に示すように、同一発電所に交流励磁同期機Ｓである
可変速機と定速機である直流励磁同期機１０７が併設さ
れる場合には、交流励磁同期機Ｓを先に系統並入して、
これを図５に示すごとく、始動→並列→定格入力運転し
た後に、直流励磁同期機１０７を始動→並列すると、直
流励磁同期機１０７はその特性上急速に｀Ｘ´のように
定格入力運転に入る。Embodiment 4 FIG. Next, the operation of another embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, when a variable speed machine as an AC exciting synchronous machine S and a DC exciting synchronous machine 107 as a constant speed machine are installed in the same power plant, the AC exciting synchronous machine S is first arranged in parallel with the system. Enter
As shown in FIG. 5, when the DC excitation synchronous machine 107 is started → parallel after the start → parallel → rated input operation, the DC excitation synchronous machine 107 rapidly switches to the rated input operation like ｀ X ′ due to its characteristics. enter.
【００５５】このとき、交流励磁同期機Ｓは直流励磁同
期機１０７の入力急増に合わせて｀Ｙ´，｀Ｚ´のごと
く、一定レートで入力を自動的に絞る調整を行うよう
に、入力調整器としての電圧比較器１８に図２に示す基
準出力Ｐ0 を与える。これにより、交流励磁同期機Ｓを
含む発電所全体の入力急増を、図５の｀Ａ´から｀Ｂ
´，｀Ｃ´のように緩慢にして、系統の動揺を抑制する
ことができる。At this time, the AC excitation synchronous machine S adjusts the input so as to automatically reduce the input at a constant rate, such as ｀ Y 'and ｀ Z', according to the rapid increase of the input of the DC excitation synchronous machine 107. providing a reference output P 0 shown in FIG. 2 to the voltage comparator 18 as a vessel. As a result, the sudden increase in the input of the entire power plant including the AC excitation synchronous machine S is reduced from ｀ A ′ to ｀ B in FIG.
｀, ´C ′, so that the system can be suppressed from oscillating.
【００５６】すなわち、先行の交流励磁同期機Ｓの入力
が定格入力で一定速運転されたままでは、発電所全体の
入力は｀Ａ´のごとくなり、先行の交流励磁同期機Ｓの
入力を｀Ｙ´のごとく制御した場合には発電所全体の入
力は｀Ｂ´のごとくなり、また、先行の交流励磁同期機
Ｓの入力を｀Ｚ´のように制御した場合には、発電所全
体の入力は｀Ｃ´のごとくなる。That is, if the input of the preceding AC excitation synchronous machine S is operated at a constant speed at the rated input, the input of the entire power plant becomes like ｀ A ′, and the input of the preceding AC excitation synchronous machine S is changed to ｀. When the control is performed as Y ′, the input of the entire power plant becomes ｀ B ′. When the input of the preceding AC excitation synchronous machine S is controlled as ｀ Z ′, the input of the entire power plant is controlled. The input looks like ｀ C ′.
【００５７】実施例５．続いて、この発明のまた別の実
施例の動作について、図１，２，６により説明する。一
箇所以上の発電機１０１，１１３に上記山側発電所監視
装置および里側発電所監視装置としての内部相差角検出
回路１０６，１１８を設け、各発電機１０１，１１３の
内部相差角を伝送路を介して系統安定化運転指令回路２
３に集める。Embodiment 5 FIG. Next, the operation of another embodiment of the present invention will be described with reference to FIGS. At least one of the generators 101 and 113 is provided with the internal phase difference angle detection circuits 106 and 118 as the mountain side power station monitoring apparatus and the village side power station monitoring apparatus, and the transmission path is used to determine the internal phase difference angle of each of the generators 101 and 113. System stabilization operation command circuit 2
Collect in 3.
【００５８】図６は上記内部相差角を示すベクトル図で
あり、図において、Ｅｄは内部起電力，Ｅｔは発電機端
子電圧，Ｉは発電機電流、φは内部相差角である。い
ま、この内部相差角φが一定以上または内部相差角φが
動揺して不安定となった場合には、これを系統安定化運
転指令回路２３で判断し、この判断結果に従って切換回
路２４を作動させて、スイッチ２５を切り換える。FIG. 6 is a vector diagram showing the internal phase difference angle. In the figure, Ed is the internal electromotive force, Et is the generator terminal voltage, I is the generator current, and φ is the internal phase difference angle. If the internal phase difference angle φ is equal to or larger than a predetermined value or the internal phase difference angle φ fluctuates and becomes unstable, this is determined by the system stabilization operation command circuit 23, and the switching circuit 24 is operated according to the determination result. Then, the switch 25 is switched.
【００５９】このため、系統安定化運転指令回路２３の
出力信号がインバータ制御器１１に入力され、動揺を抑
制する方向に交流励磁同期機Ｓのｄ軸またはｑ軸を制御
し、電圧または発生電力を制御して系統の安定化を計
る。従来は、各所にシャントリアクトルやシャントキャ
パシタあるいは同期調相機を設置して対応していたが、
この発明によれば、交流励磁同期機Ｓによっても、系統
の内部相差角の制御を可能とする。For this reason, the output signal of the system stabilization operation command circuit 23 is input to the inverter controller 11 to control the d-axis or the q-axis of the AC excitation synchronous machine S in a direction to suppress the fluctuation, and to control the voltage or the generated power. To stabilize the system. In the past, shunt reactors, shunt capacitors, or synchronous phase adjusters were installed in various places,
According to the present invention, the internal phase difference angle of the system can be controlled also by the AC excitation synchronous machine S.
【００６０】[0060]
【発明の効果】以上のように、請求項１の発明によれ
ば、交流励磁同期機が送電線路を介して接続される発電
所および負荷の電力負荷角を検出する電力負荷角演算回
路と、該電力負荷角演算回路が検出した電力負荷角を系
統安定化方向に制御する指令を発する系統安定化運転指
令回路とを設けて、制御器に、上記系統の電力に代わり
上記系統安定化運転指令回路からの指令に従って、ｑ軸
制御により上記電力負荷角を小さくするように、励磁用
変換器を制御させるように構成したので、負荷変動によ
り電力動揺が発生した場合でも、系統が崩壊するのを防
止でき、系統安定度の向上に積極的に寄与できるものが
得られる効果がある。As described above, according to the first aspect of the present invention, a power load angle calculation circuit for detecting a power load angle of a power plant and a load to which an AC excitation synchronous machine is connected via a transmission line, A system stabilization operation command circuit that issues a command to control the power load angle detected by the power load angle calculation circuit in a system stabilization direction, and the controller replaces the power of the system with
According to a command from the system stabilizing operation command circuit, the q-axis control so as to reduce the power load angle, since it is configured so as to control the excitation transducer, even if power oscillation due to load fluctuation occurs, There is an effect that it is possible to prevent the system from collapsing, and to obtain one that can positively contribute to improvement in system stability.
【００６１】請求項２の発明によれば、交流励磁同期機
が接続された至近端超高圧母線の電圧または周波数が規
定値を超えて変動したか否かを検出する電圧／周波数検
出回路を設け、上記電圧または周波数が規定値を超えて
変動した場合に、これらを系統安定化方向に制御する指
令を発する系統安定化運転指令回路と、上記系統の電
圧、電力に代わり上記系統安定化運転指令回路からの指
令に従って、一定時間、交流励磁同期機のｄ軸を電圧維
持優先制御するように、またはｑ軸を周波数優先制御す
るように、励磁用変換器を制御する制御器に指令を与え
るように構成したので、交流励磁同期機が接続された至
近端超高圧母線の電圧または周波数が変動した場合に
も、これらを抑制することで、系統安定度の向上に寄与
できるとともに、良質の電力を供給できるものが得られ
る効果がある。According to the second aspect of the present invention, there is provided a voltage / frequency detection circuit for detecting whether or not the voltage or frequency of the ultra-high voltage bus at the near end to which the AC excitation synchronous machine is connected fluctuates beyond a prescribed value. When the voltage or frequency fluctuates beyond a specified value, a finger that controls these in the direction of system stabilization.
And a power supply for the above system.
Finger from the system stabilization operation command circuit instead of voltage and power.
A command is given to a controller that controls the converter for excitation so that the d-axis of the AC excitation synchronous machine is controlled by the voltage maintenance priority or the q-axis is controlled by the frequency priority in accordance with the order. Therefore, even when the voltage or the frequency of the ultra-high voltage bus at the very near end to which the AC excitation synchronous machine is connected fluctuates, by suppressing these fluctuations, it is possible to contribute to the improvement of system stability and to supply high-quality power. There is an effect that something can be obtained.
【００６２】請求項３の発明によれば、交流励磁同期機
が送電線路を介して接続される発電所に電源脱落検出回
路または上記送電線路に接続された負荷側の負荷突変検
出回路を設け、これらの電源脱落検出回路または負荷突
変検出回路による電源脱落または負荷突変の検出結果に
従って、系統安定化運転指令回路により交流励磁同期機
のｑ軸制御により、一時的に、負荷突変や負荷脱落を補
う系統安定化運転指令回路と、上記系統の電力に代わり
上記系統安定化運転指令回路からの指令に従って、励磁
用変換器を制御する制御器に指令を与えるように構成し
たので、電源脱落や負荷の急増減に伴う負荷突変が発生
した場合にも一時的にこれらを補償する制御を実施し、
瞬時に受給バランスを図って系統安定度の向上に寄与で
きるものが得られる効果がある。According to the third aspect of the present invention, a power loss detection circuit or a load-side load sudden change detection circuit connected to the power transmission line is provided at a power plant to which the AC excitation synchronous machine is connected via the power transmission line. According to the detection result of the power loss or the load sudden change by the power loss detection circuit or the load sudden change detection circuit, the system stabilization operation command circuit temporarily controls the AC excitation synchronous machine by q-axis control, thereby causing a load sudden change or a load sudden change. A system stabilization operation command circuit that compensates for load drop,
According to the command from the above-mentioned system stabilization operation command circuit , a command is given to the controller that controls the excitation converter, so even if a load sudden change occurs due to a power loss or a sudden increase or decrease of the load, Implement control to compensate for these,
There is the effect that the receiving balance can be achieved instantaneously to contribute to the improvement of the system stability.
【００６３】請求項４の発明によれば、交流励磁同期機
が設けられる発電所に直流励磁同期機を併設し、上記交
流励磁同期機が系統に並入されて指令入力運転された後
に、上記直流励磁同期機を上記系統に並入される際に、
入力調整器によって、上記交流励磁同期機の入力を上記
直流励磁同期機の入力増に合わせて自動的に絞るように
構成したので、同一発電所において交流励磁同期機に直
流励磁同期機を並入する際の入力急増を緩慢に制御する
ことで、系統の周波数や電圧降下を発生させず、系統安
定度の向上に寄与できるものが得られる効果がある。According to the fourth aspect of the present invention, a DC excitation synchronous machine is provided alongside a power plant in which an AC excitation synchronous machine is provided, and after the AC excitation synchronous machine is inserted in the system and command-input operation is performed, When inserting a DC excitation synchronous machine into the above system,
The input regulator adjusts the input of the AC excitation synchronous machine automatically according to the increase of the input of the DC excitation synchronous machine, so the DC excitation synchronous machine is inserted in the AC excitation synchronous machine at the same power plant. Slowly controlling the sudden increase of the input at the time of power supply has the effect of providing a system that can contribute to the improvement of the system stability without generating the frequency and voltage drop of the system.
【００６４】請求項５の発明によれば、交流励磁同期機
が送電線路を介して接続される発電所に設けられて、こ
れの内部起電力および発電機電流間の内部相差角を検出
する内部相差角検出回路を接続し、該内部相差角検出回
路で検出した内部相差角が不安定となったとき、系統安
定化運転指令回路により、該内部相差角を小さくしまた
はその動揺を抑制する方向に指令を与える系統安定化運
転指令回路と、この系統安定化運転指令回路からの指令
に基づいて上記交流励磁同期機のｄ軸またはｑ軸を制御
するように、上記励磁用変換器を制御する制御器に指令
を与えるように構成したので、発電機の内部相差角が増
大または不安定となった場合に、これらを抑制または低
減することによって、電圧変動や電力動揺を抑制でき、
系統安定度の向上に寄与できるものが得られる効果があ
る。According to the fifth aspect of the present invention, an AC excitation synchronous machine is provided in a power plant connected via a power transmission line, and detects an internal phase difference angle between the internal electromotive force and the generator current. A phase difference angle detection circuit is connected, and when the internal phase difference angle detected by the internal phase difference angle detection circuit becomes unstable, the system stabilization operation command circuit reduces the internal phase difference angle or suppresses the fluctuation thereof. Stabilization operation to give instructions to
Run command circuit and commands from this system stabilization operation command circuit.
The controller is configured to give a command to the controller for controlling the excitation converter so as to control the d-axis or the q-axis of the AC excitation synchronous machine based on the following equation. When it becomes stable, by suppressing or reducing these, voltage fluctuations and power fluctuations can be suppressed,
There is an effect that what can contribute to improvement of the system stability can be obtained.
【図１】 この発明の一実施例による交流励磁同期機を
接続した配電系統を示す回路図である。FIG. 1 is a circuit diagram showing a power distribution system to which an AC excitation synchronous machine according to an embodiment of the present invention is connected.
【図２】 この発明の交流励磁同期機による揚水発電シ
ステムを示す回路図である。FIG. 2 is a circuit diagram showing a pumped-storage power generation system using the AC-excited synchronous machine of the present invention.
【図３】 この発明における負荷の電力―負荷角特性図
である。FIG. 3 is a power-load angle characteristic diagram of a load according to the present invention.
【図４】 この発明における山側発電所の電力―負荷角
特性図である。FIG. 4 is a power-load angle characteristic diagram of a mountain side power plant according to the present invention.
【図５】 この発明における交流励磁同期機および直流
励磁同期機の系統並入の経時変化を示す入力特性図であ
る。FIG. 5 is an input characteristic diagram showing a time-dependent change in system parallelism of the AC excitation synchronous machine and the DC excitation synchronous machine in the present invention.
【図６】 この発明における発電機の内部相差角を示す
説明図である。FIG. 6 is an explanatory diagram showing an internal phase difference angle of the generator according to the present invention.
【図７】 従来の可変速揚水発電システムを示す回路図
である。FIG. 7 is a circuit diagram showing a conventional variable speed pumped storage power generation system.
Ｓ 交流励磁同期機、ｌ 送電線路、Ａ 発電所（山側
発電所）、Ｂ 発電所、Ｃ 発電所（里側発電所）、Ｄ
至近端超高圧母線、１１ インバータ制御器（制御
器）、１２ インバータ（励磁用変換器）、１８ 入力
調整器、２３ 系統安定化運転指令回路、１０６ 電力
負荷角演算回路，電源脱落検出回路，内部相差角検出回
路（山側発電所監視装置）、１０７ 直流励磁同期機、
１１１ 電力負荷角演算回路（電圧／周波数検出回
路）、１１８ 電力負荷角演算回路，電源脱落検出回
路，内部相差角検出回路（里側発電所監視装置）、１１
９ 負荷、１２２ 電力負荷角演算回路，負荷突変検出
回路（負荷監視装置）。S AC excitation synchronous machine, l transmission line, A power station (mountain side power station), B power station, C power station (village side power station), D
Near-end ultra-high voltage bus, 11 inverter controller (controller), 12 inverter (exciting converter), 18 input regulator, 23 system stabilization operation command circuit, 106 power load angle calculation circuit, power loss detection circuit, Internal phase difference angle detection circuit (mountain side power station monitoring device), 107 DC excitation synchronous machine,
111 power load angle calculation circuit (voltage / frequency detection circuit), 118 power load angle calculation circuit, power loss detection circuit, internal phase difference angle detection circuit (sato side power plant monitoring device), 11
9 Load, 122 Power load angle calculation circuit, load sudden change detection circuit (load monitoring device).
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平４−325831（ＪＰ，Ａ) 特開 平４−193099（ＪＰ，Ａ) 特開 平１−308198（ＪＰ，Ａ) 特開 昭62−181698（ＪＰ，Ａ) 特開 平３−118799（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H02P 9/00 H02P 9/14 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-325831 (JP, A) JP-A-4-193099 (JP, A) JP-A-1-308198 (JP, A) JP-A-62-162 181698 (JP, A) JP-A-3-118799 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H02P 9/00 H02P 9/14
Claims (5)
磁用変換器を系統の電圧，電流に基づき制御すること
で、上記交流励磁同期機を可変速運転する交流励磁同期
機の運転制御装置において、上記交流励磁同期機が送電
線路を介して接続される発電所および負荷の電力負荷角
を検出する電力負荷角演算回路と、該電力負荷角演算回
路が検出した電力負荷角を系統安定化方向に制御する指
令を発する系統安定化運転指令回路と、上記系統の電力
に代わり上記系統安定化運転指令回路からの指令に従っ
て、ｑ軸制御により上記電力負荷角を小さくするように
上記励磁用変換器を制御する制御器とを備えたことを特
徴とする交流励磁同期機の運転制御装置。An AC excitation synchronous machine that operates at a variable speed by controlling the excitation converter connected to the secondary side of the AC excitation synchronous machine based on the voltage and current of the system. In the control device, a power load angle calculation circuit for detecting a power load angle of a power plant and a load to which the AC excitation synchronous machine is connected via a transmission line, and a power load angle detected by the power load angle calculation circuit A system stabilization operation command circuit that issues a command to control in the stabilization direction, and power for the above system
A controller for controlling the excitation converter so as to reduce the power load angle by q-axis control in accordance with a command from the system stabilization operation command circuit instead of the AC excitation synchronous machine. Operation control device.
磁用変換器を系統の電圧，電流に基づき制御すること
で、上記交流励磁同期機を可変速運転する交流励磁同期
機の運転制御装置において、上記交流励磁同期機が接続
された至近端超高圧母線の電圧または周波数が規定値を
超えて変動したか否かを検出する電圧／周波数検出回路
と、上記電圧または周波数が規定値を超えて変動した場
合に、これらを系統安定化方向に制御する指令を発する
系統安定化運転指令回路と、上記系統の電圧、電力に代
わり上記系統安定化運転指令回路からの指令に従って、
一定時間、交流励磁同期機のｄ軸を電圧維持優先制御す
るように、またはｑ軸を周波数優先制御するように、上
記励磁用変換器を制御する制御器とを備えたことを特徴
とする交流励磁同期機の運転制御装置。2. The operation of an AC excitation synchronous machine that performs variable speed operation of the AC excitation synchronous machine by controlling an excitation converter connected to a secondary side of the AC excitation synchronous machine based on a voltage and a current of a system. In the control device, a voltage / frequency detection circuit for detecting whether a voltage or a frequency of a near-end ultrahigh-voltage bus to which the AC excitation synchronous machine is connected fluctuates beyond a specified value, and the voltage or the frequency is specified. When the values fluctuate beyond the values, a command is issued to control these in the direction of system stabilization.
Instead of the system stabilization operation command circuit and the voltage and
Instead, according to the command from the system stabilization operation command circuit,
Predetermined time, the d-axis of the AC-excited synchronous machine to a voltage maintaining priority control or the q-axis to frequency priority control, AC, characterized in that a control unit for controlling the excitation transducer Operation control unit for excitation synchronous machine.
磁用変換器を系統の電圧，電流に基づき制御すること
で、上記交流励磁同期機を可変速運転する交流励磁同期
機の運転制御装置において、上記交流励磁同期機が送電
線路を介して接続される発電所に設けられた電源脱落検
出回路または上記送電線路に接続された負荷側の負荷突
変検出回路と、上記電源脱落検出回路または負荷突変検
出回路による電源脱落または負荷突変の検出結果に従っ
て、一時的に、負荷突変や負荷脱落を補う指令を与える
系統安定化運転指令回路と、上記系統の電力に代わり上
記系統安定化運転指令回路からの指令に従って、交流励
磁同期機のｑ軸制御により、上記励磁用変換器を制御す
る制御器とを備えたことを特徴とする交流励磁同期機の
運転制御装置。3. The operation of the AC excitation synchronous machine that operates the AC excitation synchronous machine at a variable speed by controlling the excitation converter connected to the secondary side of the AC excitation synchronous machine based on the voltage and current of the system. In the control device, a power loss detection circuit provided in a power plant to which the AC excitation synchronous machine is connected via a transmission line or a load sudden change detection circuit on a load side connected to the transmission line, and the power loss detection according to the detection result of the power supply dropping or load abrupt change due to the circuit or the load abrupt change detection circuit, a temporary, gives a command to compensate for load abrupt change and load drop
The system stabilization operation command circuit and the above system
AC excitation according to the command from the system stabilization operation command circuit.
The q-axis control of磁同phase machine, driving controller for an AC energization synchronous machine, characterized in that a control unit for controlling the excitation transducer.
磁用変換器を系統の電圧，電流に基づき制御すること
で、上記交流励磁同期機を可変速運転する交流励磁同期
機の運転制御装置において、上記交流励磁同期機が設け
られる発電所に併設された直流励磁同期機と、上記交流
励磁同期機が系統に並入されて指令入力運転された後
に、上記直流励磁同期機を上記系統に並入した際に、上
記交流励磁同期機の入力を上記直流励磁同期機の入力増
に合わせて自動的に絞る入力調整器とを備えたことを特
徴とする交流励磁同期機の運転制御装置。4. The operation of an AC excitation synchronous machine that operates the AC excitation synchronous machine at a variable speed by controlling an excitation converter connected to a secondary side of the AC excitation synchronous machine based on a voltage and a current of a system. In the control device, after the DC excitation synchronous machine provided in the power plant in which the AC excitation synchronous machine is provided, and after the AC excitation synchronous machine is inserted in the system and the command input operation is performed, the DC excitation synchronous machine is And an input regulator for automatically reducing the input of the AC excitation synchronous machine in accordance with an increase in the input of the DC excitation synchronous machine when the AC excitation synchronous machine is connected to the system. apparatus.
磁用変換器を系統の電圧，電流に基づき制御すること
で、上記交流励磁同期機を可変速運転する交流励磁同期
機の運転制御装置において、上記交流励磁同期機が送電
線路を介して接続される発電所に設けられて、これの内
部起電力および発電機電流間の内部相差角を検出する内
部相差角検出回路と、該内部相差角検出回路で検出した
内部相差角が不安定となったとき、該内部相差角を小さ
くしまたはその動揺を抑制する方向に指令を与える系統
安定化運転指令回路と、この系統安定化運転指令回路か
らの指令に基づいて上記交流励磁同期機のｄ軸またはｑ
軸を制御する制御器とを備えた交流励磁同期機の運転制
御装置。5. The operation of an AC excitation synchronous machine that operates the AC excitation synchronous machine at a variable speed by controlling an excitation converter connected to a secondary side of the AC excitation synchronous machine based on a voltage and a current of a system. In the control device, the AC excitation synchronous machine is provided in a power plant connected via a power transmission line, and detects an internal phase difference angle between an internal electromotive force and a generator current thereof, and an internal phase difference angle detection circuit. When the internal phase difference angle detected by the internal phase difference angle detection circuit becomes unstable , a system for giving a command in a direction to reduce the internal phase difference angle or to suppress the fluctuation thereof.
The stabilization operation command circuit and the system stabilization operation command circuit
Based on these commands, the d-axis or q
An operation control device for an AC excitation synchronous machine, comprising a controller for controlling a shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23791394A JP3187257B2 (en) | 1994-09-30 | 1994-09-30 | Operation control device for AC excitation synchronous machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23791394A JP3187257B2 (en) | 1994-09-30 | 1994-09-30 | Operation control device for AC excitation synchronous machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08103100A JPH08103100A (en) | 1996-04-16 |
| JP3187257B2 true JP3187257B2 (en) | 2001-07-11 |
Family
ID=17022306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23791394A Expired - Fee Related JP3187257B2 (en) | 1994-09-30 | 1994-09-30 | Operation control device for AC excitation synchronous machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3187257B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938242A (en) * | 2009-06-26 | 2011-01-05 | 通用电气公司 | The adjusting of generating equipment |
| US20160357207A1 (en) * | 2015-06-04 | 2016-12-08 | General Electric Company | Dynamic calculation and control of synchronous machines |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6368456B2 (en) * | 2012-08-23 | 2018-08-01 | 株式会社ダイヘン | Power fluctuation component output suppression device |
| KR101386015B1 (en) * | 2012-11-12 | 2014-04-16 | 한국전기연구원 | A method and apparatus for the generator disturbance phasor recorder including the measurement of generator load angle |
| WO2014112033A1 (en) * | 2013-01-15 | 2014-07-24 | 三菱重工業株式会社 | Wind power generation facility, method for operating same, and wind farm control device |
-
1994
- 1994-09-30 JP JP23791394A patent/JP3187257B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938242A (en) * | 2009-06-26 | 2011-01-05 | 通用电气公司 | The adjusting of generating equipment |
| CN101938242B (en) * | 2009-06-26 | 2016-08-31 | 通用电气公司 | The method and system of the temperature of the transmission equipment that regulation is connected in generating equipment |
| US20160357207A1 (en) * | 2015-06-04 | 2016-12-08 | General Electric Company | Dynamic calculation and control of synchronous machines |
| US9906176B2 (en) * | 2015-06-04 | 2018-02-27 | General Electric Company | Dynamic calculation and control of synchronous machines |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08103100A (en) | 1996-04-16 |
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