JPH074337A - Control device for guide vane of induction generator - Google Patents
Control device for guide vane of induction generatorInfo
- Publication number
- JPH074337A JPH074337A JP5168447A JP16844793A JPH074337A JP H074337 A JPH074337 A JP H074337A JP 5168447 A JP5168447 A JP 5168447A JP 16844793 A JP16844793 A JP 16844793A JP H074337 A JPH074337 A JP H074337A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- guide vane
- target value
- command
- control
- 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
- 230000006698 induction Effects 0.000 title claims abstract description 15
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Hydraulic Turbines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水力発電所にてＡＣサ
−ボモ−タ等の電動サ−ボモ−タを用いてガイドベ−ン
の開度制御を行なう調速機を持たない誘導発電機のガイ
ドベ−ン開度維持装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction power generation without a speed governor for controlling the opening of a guide vane using an electric servo motor such as an AC servo motor in a hydraulic power plant. The present invention relates to a guide vane opening degree maintenance device for a machine.
【０００２】[0002]
【従来技術】従来、水力発電所にてＡＣサ−ボモ−タ等
の電動サ−ボモ−タを用いたガイドベ−ンの開度を制御
するガイドベ−ン開度制御装置において、同期発電機の
場合のように調速機を持つ場合は、調速機により出力周
波数が目標周波数になるように電動サ−ボモ−タを用い
てガイドベ−ン制御を行う閉ル−プ制御を行っている。
一方、調速機を必要としない誘導発電機の場合は、水位
調整器や流量調整装置等の２次調整器の設定値をガイド
ベ−ン開度の目標値として電動サ−ボモ−タによりガイ
ドベ−ン開度の制御を行なっている。この制御方式には
一般にＰＩ制御（比例、積分制御）方式が採用される。2. Description of the Related Art Conventionally, in a guide vane opening control device for controlling the opening of a guide vane using an electric servo motor such as an AC servo motor in a hydroelectric power station, a synchronous generator In the case of having a speed governor as in the case, closed loop control is performed in which a guide vane control is performed using an electric servomotor so that the output frequency of the speed governor becomes a target frequency.
On the other hand, in the case of an induction generator that does not require a speed governor, the set value of a secondary regulator such as a water level regulator or a flow regulator is used as a guide vane opening target value by an electric servomotor. -The opening degree is controlled. A PI control (proportional, integral control) method is generally adopted as this control method.
【０００３】[0003]
【発明が解決しようとする課題】上記のように同期発電
機等の調速機を持つ電動サーボモータでは、調速機によ
り目標周波数になるように、ガイドベーンの開度制御を
行なう閉ループ制御系が形成されるため、見かけ上電動
サーボモータを完全に停止させることができる。しかし
ながら、調速機を必要としない誘導発電機においては、
調速機がないためガイドベーンの開若しくは閉指令を受
けるだけの開ループとなる。このためガイドベ−ン開度
制御は積分回路等で微小な信号が積分されたり、また、
目標値のない開ル−プ制御となる為、誘導発電機のガイ
ドベ−ン開度制御は不安定となりガイドベ−ン開度の現
状維持が出来なくなると云う問題があった。In the electric servomotor having the speed governor such as the synchronous generator as described above, the closed loop control system for controlling the opening degree of the guide vane so that the target frequency is obtained by the speed governor. As a result, the electric servomotor can be apparently completely stopped. However, in an induction generator that does not require a governor,
Since there is no speed governor, it becomes an open loop that only receives the command to open or close the guide vanes. Therefore, in the guide vane opening control, a small signal is integrated by an integrating circuit, or
Since the open loop control has no target value, the guide vane opening control of the induction generator becomes unstable and there is a problem that the current state of the guide vane opening cannot be maintained.
【０００４】上記現象を解決するため、水位調整器や流
量調整装置等の２次調整器の設定値を目標値として閉ル
−プ制御系を形成しているが、発電機の運用上、水位調
整器や流量調整装置等の２次調整器は除外して運転する
ことがあり、根本的な解決にはならない。In order to solve the above-mentioned phenomenon, a closed loop control system is formed with a set value of a secondary regulator such as a water level regulator or a flow rate regulator as a target value. Secondary regulators such as regulators and flow regulators may be excluded from operation, which is not a fundamental solution.
【０００５】本発明は上述の点に鑑みてなされたもの
で、上記問題点を除去し、調速機を持たない誘導発電機
においても安定したガイドベーンの開度制御及び開度を
維持できる誘導発電機のガイドベ−ン開度制御装置を提
供することを目的とする。The present invention has been made in view of the above-mentioned problems, and eliminates the above-mentioned problems, and enables stable induction control of an opening of guide vanes and induction opening even in an induction generator having no speed governor. An object is to provide a guide vane opening degree control device for a generator.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
本発明は、電動サ−ボモ−タを用いてガイドベ−ンの開
度制御を行なう調速機を持たない誘導発電機のガイドベ
−ン開度制御装置において、図１に示すように、ガイド
ベ−ン開度目標値を記憶する開度目標値記憶部３−１
と、ガイドベ−ン開指令又は閉指令を出力する目標値更
新指令部２を設け、目標値更新指令部２がガイドベ−ン
開指令又は閉指令信号を出力している間はガイドベ−ン
７の最新の開度を開度目標値記憶部３−１に記憶し、更
に目標値更新指令部２からの指令信号が無い時は現在の
ガイドベーン７の実開度と開度目標値記憶部３−１に記
憶された開度との偏差を制御信号として電動サ−ボモ−
タを駆動しガイドベ−ン開度制御を行なうことを特徴と
する。In order to solve the above problems, the present invention provides a guide vane for an induction generator that does not have a speed governor for controlling the opening of the guide vane using an electric servomotor. In the opening control device, as shown in FIG. 1, an opening target value storage unit 3-1 that stores a guide vane opening target value
And a target value update command unit 2 for outputting a guide vane open command or a close command, and while the target value update command unit 2 outputs a guide vane open command or a close command signal, the guide vane 7 The latest opening is stored in the opening target value storage unit 3-1, and when there is no command signal from the target value update command unit 2, the current actual opening of the guide vane 7 and the opening target value storage unit 3 are present. The deviation from the opening stored in -1 is used as a control signal for the electric servo system.
It is characterized in that the guide vane opening is controlled by driving the rotor.
【０００７】[0007]
【作用】本発明では、従来の調速機の代わりに開度目標
値記憶部３−１を設け、電動サ−ボモ−タ６にガイドベ
−ン開度目標値を与え閉ル−プ制御とするので、電動サ
−ボモ−タ６が、完全停止指令（目標値更新指令部２の
オフディレイタイマ２−２の出力がＯＦＦ）を受けてい
る場合でも、開度目標値記憶部３−１に記憶さたガイド
ベーン開度になるようにガイドベーン７が制御され、遠
方制御にて手動でガイドベーン開度を調整している場合
に、無制御状態（ガイドベーン開度を現状維持の状態）
にて放置した時もガイドベーン開度を現状の位置に維持
することができる。従って調速機の無い誘導発電機の場
合でも安定したガイドベ−ン開度制御を行なうことが出
来る。In the present invention, the opening target value storage unit 3-1 is provided in place of the conventional speed governor, and the guide vane opening target value is given to the electric servo motor 6 to perform the closed loop control. Therefore, even when the electric servo motor 6 receives the complete stop command (the output of the off-delay timer 2-2 of the target value update command unit 2 is OFF), the target opening degree value storage unit 3-1. When the guide vane 7 is controlled so as to reach the guide vane opening stored in the table, and the guide vane opening is manually adjusted by the remote control, the control vane is not controlled (the guide vane opening is maintained as it is). )
The guide vane opening can be maintained at the current position even when left unattended. Therefore, even in the case of an induction generator without a speed governor, stable guide vane opening control can be performed.
【０００８】[0008]
【実施例】以下本発明の一実施例を図面に基づいて詳細
に説明する。図１は本発明のガイドベ−ン開度制御装置
の構成例を示すブロック図である。図示するように、本
発明のガイドベ−ン開度維持装置はガイドベ−ン７に連
動したポテンショメ−タ８からガイドベ−ン７の実開度
信号を入力する実開度入力部１、ガイドベ−ン開度目標
値の更新指令を出力する目標値更新指令部２、ガイドベ
ーンの実開度と目標値の偏差値を検出する偏差検出部
３、極性を検出しパルス発生指令を出すパルス発生許可
検出部４、開パルス及び閉パルスを出力するパルス発生
部５、ガイドベ−ン７を駆動する電動サ−ボモ−タ６
（ＡＣサ−ボモ−タ）、電動サ−ボモ−タ６を駆動する
ガイドベ−ン駆動部９から構成され、ガイドベ−ン７の
開度を制御する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram showing a configuration example of a guide vane opening degree control device of the present invention. As shown in the figure, the guide vane opening maintaining device of the present invention includes an actual opening input section 1 for inputting an actual opening signal of the guide vane 7 from a potentiometer 8 interlocked with the guide vane 7, a guide vane. Target value update command unit 2 that outputs a command to update the opening target value, deviation detection unit 3 that detects the deviation value between the actual opening of the guide vane and the target value, pulse generation permission that issues a pulse generation command by detecting the polarity An electric servo motor 6 for driving a detector 4, a pulse generator 5 for outputting an open pulse and a closed pulse, and a guide vane 7.
(AC servo motor), a guide vane drive unit 9 for driving the electric servo motor 6, and controls the opening of the guide vane 7.
【０００９】ガイドベ−ン開度信号はガイドベ−ン７と
連動したポテンショメ−タ８から出力される。ポテンシ
ョメ−タ８はガイドベ−ン開度の全開から全閉までのス
トロ−クをアナログ量に変換し、更に、その出力信号は
実開度入力部１へ入力されレベル変換器１−１でレベル
変換される。The guide vane opening signal is output from the potentiometer 8 which is interlocked with the guide vane 7. The potentiometer 8 converts the stroke of the guide vane opening from full opening to full closing into an analog quantity, and the output signal thereof is input to the actual opening input section 1 and the level converter 1-1. Level converted.
【００１０】目標値更新指令部２は手動操作によるガイ
ドベ−ン開指令信号とガイドベ−ン閉指令信号のＯＲを
とるＯＲ回路２−１、及びＴＯＦ（オフディレイタイ
マ）２−２から成り、ガイドベ−ンの開指令又は閉指令
の連続信号を出力する。ＴＯＦ２−２は電動サ−ボモ−
タ６の機械的な遅れ時間を考慮し、開指令もしくは閉指
令の信号断後もある一定時間出力する為のものである。The target value update command unit 2 comprises an OR circuit 2-1 for ORing a guide vane opening command signal and a guide vane closing command signal by manual operation, and a TOF (off delay timer) 2-2. Outputs a continuous signal of open command or close command. TOF2-2 is an electric servo
In consideration of the mechanical delay time of the switch 6, the output is made for a certain period of time even after the disconnection of the open or close command signal.
【００１１】ガイドベ−ンの手動操作時、目標値更新指
令部２のガイドベ−ン開指令信号または閉指令信号がガ
イドベ−ン駆動部９に入力され、その出力で電動サ−ボ
モ−タ６を駆動しガイドベ−ン７の開閉操作を行なう。When the guide vane is manually operated, the guide vane open command signal or the close command signal of the target value update command unit 2 is input to the guide vane drive unit 9, and the output thereof drives the electric servomotor 6. It drives to open and close the guide vanes 7.
【００１２】偏差検出部３はガイドベ−ン７の開度目標
値を記憶する開度目標値記憶部３−１及び、目標値と実
開度の偏差を検出する偏差検出部３−２から構成され、
目標値更新指令部２からの信号ａが出力されている時、
実開度入力部１のレベル変換器１−１でレベル変換され
たガイドベ−ン実開度の最新値が偏差検出部３の開度目
標値記憶部３−１に記憶される。従って目標値と実開度
の偏差を検出する偏差検出器３−２の出力はガイドベ−
ンが開閉動作中は０となり、目標値更新指令部２からの
ガイドベ−ン開指令（または閉指令）信号が無くなった
時、その時点のガイドベ−ン開度を維持するような偏差
信号が出力される。The deviation detecting section 3 comprises an opening target value storage section 3-1 for storing a target opening value of the guide vane 7 and a deviation detecting section 3-2 for detecting a deviation between the target value and the actual opening. Is
When the signal a from the target value update command unit 2 is output,
The latest value of the guide vane actual opening level-converted by the level converter 1-1 of the actual opening input section 1 is stored in the opening target value storage section 3-1 of the deviation detecting section 3. Therefore, the output of the deviation detector 3-2 for detecting the deviation between the target value and the actual opening is the guide base.
Is 0 during the opening / closing operation, and when the guide vane opening command (or closing command) signal from the target value update commanding unit 2 disappears, a deviation signal is output to maintain the guide vane opening at that time. To be done.
【００１３】偏差検出部３にて記憶されたガイドベ−ン
開度目標値は目標更新部２よりの出力がないかぎり保持
し続けられられることとなり、この目標値に対しガイド
ベ−ン実開度との差を求めることによりガイドベ−ン開
度偏差が与えられ、ガイドベ−ン開度は維持される。The guide vane opening target value stored in the deviation detecting unit 3 is kept held unless the output from the target updating unit 2 is reached. The guide vane opening deviation is given by determining the difference between the two, and the guide vane opening is maintained.
【００１４】尚、偏差検出部３の開度目標値記憶部３−
１は、アナログ量であれば、一般的に市販されているア
ナログメモリ変換器、ディジタル量であればソフト処理
によるレジスタ移動により容易に実現することができ
る。The opening target value storage unit 3-of the deviation detection unit 3
If 1 is an analog quantity, it can be easily realized by a commercially available analog memory converter, and if it is a digital quantity, it can be easily realized by moving a register by software processing.
【００１５】偏差検出部３から出力されたガイドベ−ン
開度偏差信号はパルス発生許可検出部４へ入力され極性
判別器４−１で開もしくは閉パルスを出力するための極
性判別を行ない、開パルス又は閉パルス出力を決定す
る。また、ガイドベ−ン開度偏差を不感帯４−２を通す
ことにより制御系の安定を図っている。The guide vane opening degree deviation signal output from the deviation detection section 3 is input to the pulse generation permission detection section 4 and the polarity judgment unit 4-1 judges the polarity for outputting the open or closed pulse, and the signal is opened. Determine pulse or closed pulse output. Further, the control system is stabilized by passing the deviation of the guide vane opening through the dead zone 4-2.
【００１６】パルス発生許可検出部４より出力された開
指令パルスもしくは閉指令パルス出力はパルス発生部５
へ入力され、開パルス発生器５−１もしくは閉パルス発
生器５−２から駆動用の開パルスもしくは閉パルスを出
力し電動サ−ボモ−タ６を駆動しガイドベ−ン７の開度
を制御する。The open command pulse or the close command pulse output output from the pulse generation permission detection unit 4 is output to the pulse generation unit 5
Is input to the open pulse generator 5-1 or the closed pulse generator 5-2 to output an open pulse or a closed pulse for driving to drive the electric servomotor 6 to control the opening of the guide vane 7. To do.
【００１７】ガイドベ−ン開度制御装置を上記のように
構成することにより、電動サ−ボモ−タ６が完全停止指
令、即ち目標値更新指令部２のオフディレイタイマ２−
２の出力ＯＦＦの場合でも、開度目標値記憶部３−１に
記憶さたガイドベーン開度になるようにガイドベーン７
が制御され、遠方制御にて手動でガイドベーン開度を調
整している場合に、ガイドベーン７の開度を現状維持の
状態にて放置してガイドベーン７の開度を現状の位置に
維持することができる。By configuring the guide vane opening control device as described above, the electric servomotor 6 issues a complete stop command, that is, the off-delay timer 2-of the target value update command section 2.
Even when the output of No. 2 is OFF, the guide vanes 7 are adjusted so that the guide vane opening degree stored in the opening degree target value storage unit 3-1 is reached.
Is controlled and the guide vane opening is manually adjusted by the remote control, the opening of the guide vane 7 is left as it is and the guide vane 7 is kept at the current position. can do.
【００１８】[0018]
【発明の効果】以上、詳細に説明したように本発明によ
れば、下記のような優れた効果が期待される。従来の調
速機の代わりに開度目標値記憶部を設け、電動サ−ボモ
−タにガイドベ−ン開度目標値を与え閉ル−プ制御とす
るので、調速機の無い誘導発電機の場合でも安定したガ
イドベ−ン開度制御を行なうことが可能となり、ガイド
ベ−ン開度を維持することが出来る。As described in detail above, according to the present invention, the following excellent effects are expected. An opening target value storage unit is provided instead of the conventional speed governor, and a guide vane opening target value is given to the electric servo motor for closed loop control, so an induction generator without a speed governor. In this case, the guide vane opening can be controlled stably, and the guide vane opening can be maintained.
【図１】本発明のガイドベ−ン開度維持装置の構成例を
示すブロック図である。FIG. 1 is a block diagram showing a configuration example of a guide vane opening degree maintenance device of the present invention.
１ 実開度入力部 １−１ レベル変換器 ２ 目標値更新指令部 ２−１ ＯＲ回路 ２−２ ＴＯＦ回路（オフディレイタイマ回路） ３ 偏差検出部 ３−１ 開度目標値記憶部 ３−２ 偏差検出部 ４ パルス発生許可検出部 ４−１ 極性判別器 ４−２ 不感帯 ５ パルス発生部 ５−１ 開パルス発生器 ５−２ 閉パルス発生器 ６ 電動サ−ボモ−タ ７ ガイドベ−ン ８ ポテンショメ−タ ９ ガイドベ−ン駆動部 1 Actual Opening Input Section 1-1 Level Converter 2 Target Value Update Command Section 2-1 OR Circuit 2-2 TOF Circuit (Off Delay Timer Circuit) 3 Deviation Detection Section 3-1 Opening Target Value Storage Section 3-2 Deviation detection unit 4 Pulse generation permission detection unit 4-1 Polarity discriminator 4-2 Dead zone 5 Pulse generation unit 5-1 Open pulse generator 5-2 Closed pulse generator 6 Electric servo motor 7 Guide vane 8 Potentiometer Meter 9 Guide vane drive
Claims (1)
の開度制御を行なう調速機を持たない誘導発電機のガイ
ドベ−ン開度制御装置において、 ガイドベ−ン開度目標値を記憶する開度目標値記憶手段
と、ガイドベ−ン開指令又は閉指令を出力する開閉指令
手段を設け、 前記開閉指令手段がガイドベ−ン開指令又は閉指令信号
を出力している間はガイドベ−ンの最新の開度を前記開
度目標値記憶手段に記憶し、更に前記開閉指令手段から
の指令信号が無い時は現在のガイドベーンの実開度と前
記開度目標値記憶手段に記憶された開度との偏差を制御
信号として電動サ−ボモ−タを駆動しガイドベ−ン開度
制御を行なうことを特徴とする誘導発電機のガイドベ−
ン開度維持装置。1. A guide vane opening control device for an induction generator guide vane opening control device which does not have a governor for controlling the opening of a guide vane using an electric servomotor. An opening target value storage means for storing and an opening / closing command means for outputting a guide vane opening command or a closing command are provided, and a guide vane is output while the opening / closing commanding device outputs a guide vane opening command or a closing command signal. The latest opening of the guide vane is stored in the opening target value storage means, and when there is no command signal from the opening / closing command means, the current actual opening of the guide vane and the opening target value storage means are stored. Guide vane opening control by driving an electric servomotor using the deviation from the opening as a control signal to control the guide vane opening.
Opening maintenance device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5168447A JPH074337A (en) | 1993-06-14 | 1993-06-14 | Control device for guide vane of induction generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5168447A JPH074337A (en) | 1993-06-14 | 1993-06-14 | Control device for guide vane of induction generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH074337A true JPH074337A (en) | 1995-01-10 |
Family
ID=15868285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5168447A Pending JPH074337A (en) | 1993-06-14 | 1993-06-14 | Control device for guide vane of induction generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH074337A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102148634B1 (en) * | 2020-07-16 | 2020-08-26 | 한전케이피에스 주식회사 | Position Sensor Device for Water Turbine Generator Guide Vane |
| CN113864108A (en) * | 2021-09-26 | 2021-12-31 | 中国长江电力股份有限公司 | A Power Control Method for Hydroelectric Units Using PI Control to Adjust the Opening Degree |
-
1993
- 1993-06-14 JP JP5168447A patent/JPH074337A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102148634B1 (en) * | 2020-07-16 | 2020-08-26 | 한전케이피에스 주식회사 | Position Sensor Device for Water Turbine Generator Guide Vane |
| CN113864108A (en) * | 2021-09-26 | 2021-12-31 | 中国长江电力股份有限公司 | A Power Control Method for Hydroelectric Units Using PI Control to Adjust the Opening Degree |
| CN113864108B (en) * | 2021-09-26 | 2023-06-13 | 中国长江电力股份有限公司 | The power control method of hydroelectric unit with PI control to adjust the given opening degree |
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| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20040323 |