JPH05172034A - Governor control device - Google Patents
Governor control deviceInfo
- Publication number
- JPH05172034A JPH05172034A JP3335364A JP33536491A JPH05172034A JP H05172034 A JPH05172034 A JP H05172034A JP 3335364 A JP3335364 A JP 3335364A JP 33536491 A JP33536491 A JP 33536491A JP H05172034 A JPH05172034 A JP H05172034A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- output
- voltage
- power supply
- signal
- 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
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
- Control Of Water Turbines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水力発電所の水車の回
転数を規定回転数に制御する調速機制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a governor control device for controlling the rotational speed of a water turbine of a hydraulic power plant to a specified rotational speed.
【０００２】[0002]
【従来の技術】一般に、水力発電所の発電機は電力系統
に接続され、他の多くの発電所と並列運転されている。
そのため個々の発電所は目標とする系統周波数に制御す
る必要があり、発電所内に調速機制御装置が設けられて
いる。以下、図を参照して従来の調速機制御装置を説明
する。図３は、従来の調速機制御装置の構成図である。
発電機１は、発電機主回路２および介し図示していない
並列用の遮断器を介し系統に接続されている。2. Description of the Related Art Generally, a generator of a hydroelectric power plant is connected to an electric power system and operates in parallel with many other power plants.
Therefore, it is necessary to control each power plant to a target system frequency, and a governor control device is provided in the power plant. Hereinafter, a conventional governor control device will be described with reference to the drawings. FIG. 3 is a configuration diagram of a conventional governor control device.
The generator 1 is connected to the system via a generator main circuit 2 and a parallel circuit breaker (not shown).
【０００３】励磁電源変圧器３は、発電機主回路２に接
続され発電機１から出力される出力電圧を図示していな
い励磁制御部の界磁巻線に出力するための所定レベルの
２次電圧Ｖ2 に変換出力する。直流電源部４は、発電所
内に設けられ直流電圧を出力する。The excitation power supply transformer 3 is connected to the generator main circuit 2 and outputs a voltage output from the generator 1 to a field winding of an excitation controller (not shown). Converted to voltage V2 and output. The DC power supply unit 4 is provided inside the power plant and outputs a DC voltage.
【０００４】電源出力部５は、直流電源部４から出力さ
れる直流電圧を取り込むと共に発電所内の交流電源部６
から出力される交流電圧を取り込み、所定レベルの直流
電圧に変換する。そして、通常運転時には、直流電源部
４から出力される直流電圧を取り込み、直流電源部４の
故障時には発電所内の交流電源部６から出力される交流
電圧から変換された直流電圧を出力する。速度検出器７
は、発電機１の回転速度を検出し速度検出器信号Ｓ１を
出力する。調速機制御部８は、信号変換出力部８ａおよ
び制御部８ｂを有する。信号変換出力部８ａは、入力さ
れる速度検出器信号Ｓ１を速度信号Ｎ１に変換し出力す
る。The power supply output unit 5 takes in the DC voltage output from the DC power supply unit 4 and also supplies the AC power supply unit 6 in the power plant.
The AC voltage output from is taken in and converted into a DC voltage of a predetermined level. Then, during normal operation, the DC voltage output from the DC power supply unit 4 is taken in, and when the DC power supply unit 4 fails, a DC voltage converted from the AC voltage output from the AC power supply unit 6 in the power plant is output. Speed detector 7
Detects the rotation speed of the generator 1 and outputs a speed detector signal S1. The governor control unit 8 has a signal conversion output unit 8a and a control unit 8b. The signal conversion output unit 8a converts the input speed detector signal S1 into a speed signal N1 and outputs it.
【０００５】制御部８ｂは、この速度信号Ｎ１に応じて
水車内に流入する流量を調整して水車の回転数が規定回
転数に制御する制御信号Ｓ２を図示していないガイドベ
ーンを調整する調速機に出力する。The control unit 8b adjusts the flow rate flowing into the water turbine in accordance with the speed signal N1 to adjust the control signal S2 for controlling the rotation speed of the water turbine to a specified rotation speed by adjusting a guide vane (not shown). Output to speed machine.
【０００６】以上のように構成されているので、発電機
１が運転中に調速機制御部８へ駆動電源を供給する直流
電源部４に故障（短絡等）が発生し直流電源が喪失した
場合、発電所内の交流電源部６から出力される正常な交
流電圧から変換された直流電圧が電源出力部５から調速
機制御部８へ供給されるので、調速機制御部８は動作を
継続するので発電機１も運転を継続する。With the above-mentioned configuration, the DC power supply unit 4 which supplies the driving power to the governor control unit 8 during the operation of the generator 1 has a failure (short circuit or the like) and the DC power supply is lost. In this case, since the DC voltage converted from the normal AC voltage output from the AC power supply unit 6 in the power plant is supplied from the power supply output unit 5 to the governor control unit 8, the speed governor control unit 8 operates. Since it continues, the generator 1 also continues to operate.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上記の
調速機制御装置の構成では直流電源部が故障して、更に
発電所内の交流電源も故障により調速機制御部への入力
電源が喪失した場合、調速機制御部は不動作となりガイ
ドベーンを調整する調速機に出力する制御信号の出力が
なくなる。そして、調速機も不動作となりガイドベーン
は徐々に閉じていき、発電機はモータリング状態となり
発電運転の継続ができなくなる。However, in the structure of the speed governor control device described above, the DC power supply unit fails, and the AC power supply in the power plant also fails, resulting in loss of input power to the speed governor control unit. In this case, the governor control unit does not operate, and the control signal output to the governor for adjusting the guide vanes is not output. Then, the speed governor also becomes inoperative, the guide vanes gradually close, and the generator enters the motoring state, making it impossible to continue the power generation operation.
【０００８】また、速度検出器が故障した場合、調速機
制御部への速度信号の入力がなくなるため調速機制御部
は調速機にガイドベーンを全閉させる信号を出力し、発
電機の発電運転は速度検出器が故障する前の負荷運転か
ら全負荷運転となる。When the speed detector fails, the speed governor control section outputs a signal to completely close the guide vanes to the speed governor because the speed governor control section does not receive the speed signal. The power generation operation of is changed from the load operation before the speed detector fails to the full load operation.
【０００９】本発明は、水力発電所の調速機制御装置の
直流電源喪失時および速度検出器の故障時において発電
機の負荷変動を生じさせずに発電運転の継続を可能とす
る調速機制御装置を提供することにある。The present invention is a speed governor capable of continuing a power generation operation without causing load fluctuations of a generator when a DC power source is lost in a speed governor control device of a hydraulic power plant and a speed detector fails. It is to provide a control device.
【００１０】[0010]
【課題を解決するための手段】本発明は、上記目的を達
成するために水力発電所の発電機の水車の回転数を規定
回転数に制御する調速機制御装置において、水車の回転
数を検出し速度信号を出力する速度検出器と、発電機の
出力電圧を励磁制御部の界磁巻線を励磁するためのレベ
ルの電圧に変換する励磁電源変圧器と、発電所内に設け
られた所定の直流電圧を出力する直流電源部と、通常運
転中は直流電源部から出力される直流電圧を取り込み、
この直流電源部の故障時に励磁電源変圧器から出力され
る電圧を取り込む電源出力部と、In order to achieve the above object, the present invention provides a speed governor control device for controlling the rotational speed of a water turbine of a generator of a hydroelectric power plant to a specified rotational speed. A speed detector that detects and outputs a speed signal, an excitation power supply transformer that converts the output voltage of the generator into a voltage of a level for exciting the field winding of the excitation control unit, and a predetermined generator installed in the power plant. The DC power supply unit that outputs the DC voltage of and the DC voltage output from the DC power supply unit during normal operation,
When the DC power supply unit fails, a power supply output unit that takes in the voltage output from the excitation power supply transformer,
【００１１】通常運転中は速度検出器から出力される第
１の速度信号を取り込み、この速度検出器の故障時に励
磁電源変圧器から出力される電圧を取り込み、第２の速
度信号に変換し出力する信号変換出力部と、During normal operation, the first speed signal output from the speed detector is taken in, the voltage output from the excitation power supply transformer is taken in when this speed detector fails, and it is converted into the second speed signal and output. A signal conversion output unit for
【００１２】電源出力部から出力される電圧と信号変換
出力部から出力される速度信号を取り込み、水車の回転
数を規定回転数に制御する制御信号を出力する制御部と
を有することを特徴とする。It has a control unit for taking in the voltage output from the power supply output unit and the speed signal output from the signal conversion output unit, and outputting a control signal for controlling the rotational speed of the water turbine to a specified rotational speed. To do.
【００１３】[0013]
【作用】以上の構成により、直流電源部に故障が発生し
調速機制御部への直流電源の供給がなくなった場合でも
励磁電源変圧器から出力される電圧を取り込むと共に、
速度検出器に故障が発生し調速機制御部への速度信号が
なくなった場合でも励磁電源変圧器から出力される電圧
の周波数成分から水車の速度信号を検出するため発電機
の発電運転の継続を行なうことができる。With the above configuration, the voltage output from the excitation power supply transformer is taken in even when the DC power supply unit fails and the DC power supply to the governor control unit is cut off.
Even if the speed detector fails and the speed signal to the governor control unit disappears, the generator operation continues because the speed signal of the turbine is detected from the frequency component of the voltage output from the excitation power transformer. Can be done.
【００１４】[0014]
【実施例】本発明の実施例を図面を参照して説明する。
図１は、本実施例である調速機制御装置の構成図であ
る。発電機１は、発電機主回路２および介し図示してい
ない並列用の遮断器を介し系統に接続されている。Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a configuration diagram of a governor control device according to the present embodiment. The generator 1 is connected to the system via a generator main circuit 2 and a parallel circuit breaker (not shown).
【００１５】励磁電源変圧器３は、発電機主回路２に接
続され発電機１から出力される出力電圧を図示していな
い励磁制御部の界磁巻線に出力するための所定レベルの
２次電圧Ｖ2 に変換出力する。直流電源部４は、発電所
内に設けられ直流電圧を出力する。The excitation power supply transformer 3 is connected to the generator main circuit 2 and outputs a voltage output from the generator 1 to a field winding of an excitation controller (not shown). Converted to voltage V2 and output. The DC power supply unit 4 is provided inside the power plant and outputs a DC voltage.
【００１６】電源部出力５は、直流電源部４から出力さ
れる直流電圧を取り込むと共に励磁電源変圧器３から出
力される２次電圧を取り込み、設定レベルの直流電圧に
変換する。そして、通常運転時には、直流電源部４から
出力される直流電圧を取り込み、直流電源部４の故障時
には励磁電源変圧器３から出力される２次電圧Ｖ2 から
変換された直流電圧を出力する。速度検出器７は、発電
機１の回転速度を検出し速度検出器信号Ｓ１を出力す
る。調速機制御部８は、信号変換出力部８ａおよび制御
部８ｂを有する。The power supply unit output 5 takes in the DC voltage output from the DC power supply unit 4 and also takes in the secondary voltage output from the excitation power supply transformer 3 and converts it into a DC voltage of a set level. Then, during the normal operation, the DC voltage output from the DC power supply unit 4 is taken in, and when the DC power supply unit 4 fails, the DC voltage converted from the secondary voltage V2 output from the excitation power supply transformer 3 is output. The speed detector 7 detects the rotation speed of the generator 1 and outputs a speed detector signal S1. The governor control unit 8 has a signal conversion output unit 8a and a control unit 8b.
【００１７】信号変換出力部８ａは、通常運転時には速
度検出器７から出力される速度検出器信号Ｓ１を取り込
み速度信号Ｎ１に変換し出力し、速度検出器８に故障が
発生し速度信号Ｎ１が得られない場合には励磁電源変圧
器３から出力される２次電圧Ｖ2 を取り込み、この２次
電圧Ｖ2 の周波数成分から速度信号Ｎ２を出力する。図
２の構成図を参照して信号変換出力部８ａを詳細に説明
する。The signal conversion output unit 8a takes in the speed detector signal S1 output from the speed detector 7 during normal operation, converts it into a speed signal N1, and outputs the speed signal N1. When it is not obtained, the secondary voltage V2 output from the excitation power transformer 3 is taken in, and the speed signal N2 is output from the frequency component of this secondary voltage V2. The signal conversion output unit 8a will be described in detail with reference to the configuration diagram of FIG.
【００１８】発電機１の速度を検出する速度検出器７か
らのパルス出力である速度検出器信号Ｓ１を信号変換部
80ａで速度信号Ｎ１に変換する。この速度信号Ｎ１は非
並列条件80ｂ（図示していない並列用遮断器が開いてい
る条件）が成立している場合には、そのまま速度信号Ｎ
として制御部８ｂに出力される。The signal converter converts the speed detector signal S1 which is a pulse output from the speed detector 7 for detecting the speed of the generator 1.
Converted to speed signal N1 at 80a. When the non-parallel condition 80b (the condition that the parallel circuit breaker (not shown) is open) is satisfied, the speed signal N1 is the speed signal N1 as it is.
Is output to the control unit 8b.
【００１９】また、速度信号Ｎ１は並列条件80ｃ（図示
していない並列用遮断器が閉じている条件）が成立して
いる場合には、速度判定部80ｄで速度信号Ｎ１が定格速
度付近にあると判定した場合には、速度信号Ｎ１はその
まま速度信号Ｎとして制御部８ｂに出力される。When the speed signal N1 satisfies the parallel condition 80c (the condition in which the parallel circuit breaker (not shown) is closed), the speed determination unit 80d determines that the speed signal N1 is near the rated speed. If it is determined that the speed signal N1 is output as it is to the control unit 8b as the speed signal N.
【００２０】また、励磁電源変圧器３から出力される２
次電圧Ｖ2 を信号変換部80ｅで速度信号Ｎ２に変換す
る。この速度信号Ｎ２は、並列条件80ｃ（図示していな
い並列用遮断器が閉じている条件）が成立し、速度検出
異常条件80ｆすなわち速度判定部80ｄで速度信号Ｎ１が
定格速度付近に無いと判定した条件が成立した場合にそ
のまま速度信号Ｎとして制御部８ｂに出力される。Further, 2 output from the excitation power transformer 3
The next voltage V2 is converted into a speed signal N2 by the signal converter 80e. The speed signal N2 satisfies the parallel condition 80c (the condition in which the parallel circuit breaker (not shown) is closed), and the speed detection abnormal condition 80f, that is, the speed determination unit 80d determines that the speed signal N1 is not near the rated speed. When the condition is satisfied, the speed signal N is output as it is to the control unit 8b.
【００２１】制御部８ｂは、通常運転時には信号変換出
力部８ａから出力される速度検出器７から求められる速
度信号Ｎを取り込み、この速度信号Ｎに応じて水車内に
流入する流量を調整して水車の回転数が規定回転数に制
御する制御信号Ｓ２を図示していないガイドベーンを調
整する調速機に出力する。また、速度検出器７に故障が
発生し速度検出器７から速度信号Ｎが得られない場合に
は、信号変換出力部８ａから出力される速度信号Ｎ２を
検出し、この速度信号Ｎ２に応じて水車内に流入する流
量を調整して水車の回転数が規定回転数に制御する制御
信号Ｓ２を図示していないガイドベーンを調整する調速
機に出力する。The control unit 8b takes in the speed signal N obtained from the speed detector 7 output from the signal conversion output unit 8a during normal operation, and adjusts the flow rate flowing into the turbine in accordance with the speed signal N. A control signal S2 for controlling the rotational speed of the water turbine to a specified rotational speed is output to a speed governor (not shown) for adjusting a guide vane. When a failure occurs in the speed detector 7 and the speed signal N is not obtained from the speed detector 7, the speed signal N2 output from the signal conversion output unit 8a is detected, and the speed signal N2 is detected according to the speed signal N2. A control signal S2 for adjusting the flow rate flowing into the turbine to control the rotation speed of the turbine to a specified rotation speed is output to a speed governor (not shown) for adjusting a guide vane.
【００２２】[0022]
【発明の効果】以上のように本発明によれば、励磁電源
の２次電圧を調速機制御装置の入力電源として使用し、
更にこの２次電圧の周波数から発電機の速度を求めるこ
とで直流電源部および速度検出器の故障発生時にも継続
して発電機の確実な運転を行なうことができる調速機制
御装置を得ることができる。As described above, according to the present invention, the secondary voltage of the excitation power source is used as the input power source of the governor control device,
Further, by obtaining the speed of the generator from the frequency of the secondary voltage, it is possible to obtain a governor control device capable of continuously performing reliable operation of the generator even when a failure occurs in the DC power supply unit and the speed detector. You can
【図１】本実施例の調速機制御装置の構成図。FIG. 1 is a configuration diagram of a governor control device according to the present embodiment.
【図２】本実施例の調速機制御装置の信号変換出力部の
構成図。FIG. 2 is a configuration diagram of a signal conversion output unit of the speed governor control device of the present embodiment.
【図３】従来の調速機制御装置の構成図。FIG. 3 is a configuration diagram of a conventional governor control device.
１…発電機、２…発電機主回路、３…励磁電源変圧部、
４…直流電源部、５…電源出力部、６…交流電源部、７
…速度検出器、８…調速機制御部、８ａ…信号変換出力
部、８ｂ…制御部、80ａ，80ｃ…信号変換部、80ｂ…非
並列条件判断部、80ｃ…並列条件判断部、80ｄ…速度判
定部、Ｓ１…速度検出器信号、Ｓ２…制御信号、Ｎ１，
Ｎ２，Ｎ…速度信号、Ｖ2 …２次電圧1 ... Generator, 2 ... Generator main circuit, 3 ... Excitation power transformer,
4 ... DC power supply section, 5 ... Power supply output section, 6 ... AC power supply section, 7
... speed detector, 8 ... governor control unit, 8a ... signal conversion output unit, 8b ... control unit, 80a, 80c ... signal conversion unit, 80b ... non-parallel condition judging unit, 80c ... parallel condition judging unit, 80d ... Speed determination unit, S1 ... Speed detector signal, S2 ... Control signal, N1,
N2, N ... Speed signal, V2 ... Secondary voltage
Claims (1)
定回転数に制御する調速機制御装置において、 前記水車の回転数を検出し速度信号を出力する速度検出
器と、 前記発電機の出力電圧を励磁制御部の界磁巻線を励磁す
るためのレベルの２次電圧に変換する励磁電源変圧器
と、 前記発電所内に設けられた所定の直流電圧を出力する直
流電源部と、 通常運転中は前記直流電源部から出力される直流電圧を
取り込み出力し、この直流電源部の故障時に前記励磁電
源変圧器から出力される２次電圧を取り込み所定の直流
電圧に変換し出力する電源出力部と、 通常運転中は前記速度検出器から出力される第１の速度
信号を取り込み、この速度検出器の故障時に前記励磁電
源変圧器から出力される電圧を取り込み、第２の速度信
号に変換し出力する信号変換出力部と、 前記電源出力部から出力される直流電圧と前記速度信号
出力部から出力される速度信号を取り込み、この速度信
号に応じて水車の回転数を規定回転数に制御する制御信
号を出力する制御部とを有することを特徴とする調速機
制御装置。1. A speed governor control device for controlling the rotational speed of a water turbine of a generator of a hydraulic power plant to a prescribed rotational speed, a speed detector for detecting the rotational speed of the water turbine and outputting a speed signal, An excitation power supply transformer for converting the output voltage of the machine into a secondary voltage of a level for exciting the field winding of the excitation control unit, and a DC power supply unit provided in the power plant for outputting a predetermined DC voltage. During normal operation, the DC voltage output from the DC power supply unit is taken in and output, and when the DC power supply unit fails, the secondary voltage output from the excitation power supply transformer is taken in and converted into a predetermined DC voltage and output. The power supply output unit and the first speed signal output from the speed detector during normal operation are taken in, and the voltage output from the excitation power transformer is taken in when the speed detector fails, and the second speed signal is taken in. And output No. conversion output unit, a control signal that takes in the DC voltage output from the power supply output unit and the speed signal output from the speed signal output unit, and controls the rotation speed of the water turbine to a specified rotation speed according to the speed signal. A speed governor control device, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3335364A JPH05172034A (en) | 1991-12-19 | 1991-12-19 | Governor control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3335364A JPH05172034A (en) | 1991-12-19 | 1991-12-19 | Governor control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05172034A true JPH05172034A (en) | 1993-07-09 |
Family
ID=18287708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3335364A Pending JPH05172034A (en) | 1991-12-19 | 1991-12-19 | Governor control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05172034A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112922772A (en) * | 2021-02-09 | 2021-06-08 | 中国长江电力股份有限公司 | Working condition rotation control method of hydraulic control system for black start of hydraulic turbine governor |
-
1991
- 1991-12-19 JP JP3335364A patent/JPH05172034A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112922772A (en) * | 2021-02-09 | 2021-06-08 | 中国长江电力股份有限公司 | Working condition rotation control method of hydraulic control system for black start of hydraulic turbine governor |
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