JPS60209669A - How to start a water turbine for hydroelectric power generation - Google Patents
How to start a water turbine for hydroelectric power generationInfo
- Publication number
- JPS60209669A JPS60209669A JP59066258A JP6625884A JPS60209669A JP S60209669 A JPS60209669 A JP S60209669A JP 59066258 A JP59066258 A JP 59066258A JP 6625884 A JP6625884 A JP 6625884A JP S60209669 A JPS60209669 A JP S60209669A
- Authority
- JP
- Japan
- Prior art keywords
- water turbine
- guide vane
- opening degree
- function generator
- starting
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/005—Starting, also of pump-turbines
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Water Turbines (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は発゛電機を使用する水力発電設備止の起動力法
の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved starting force method for shutting down hydroelectric power generation equipment using a starter machine.
一般に電力系統においては、第１図にン１＜すように送
電線ｌに水車６と叙連結した発電機２か複数設置されて
おり、この発電機２と送電線ｌとの間に速度リレー３を
介装して送電線ｌと発電機２とを接続あるいは遮断する
所謂並列投入を行うようＬ＋外、イいス
ところで、発電機２か誘導発電機を用いるものである場
合、誘導発Ｎ機の特性により並列投入時の電力系統に生
ずるショックを少なくするために、誘導発゛厖機を同期
回転数まで増速させるように速度制御を行いなから起動
して並列投入を行っていた。なお、誘導発電機の場合の
起動とは並列投入が完了した時点を定義しているつ
以下、従来の誘４発″毛機２を駆動する水車の起動力法
を説明する。この従来の方法は、第２図に示すように、
１−水槽４と放水槽５との間に設けられた水車６をガイ
ドベーン７の開閉で調速するもので、まｆ第３図に示す
開度設定器１１によってカイトヘーノ開度を決めて水車
６を回転させ１発 −屯４９．２の回転数が同期速度近
傍になってから第５図に示すように、カイトヘーン駆動
回路８とカイトヘーン駆動機構９を速度設定部１３．速
度検出部ｔ ４．加算器１５．コントローラ１６で水車
６の回転数が誘導発電機の同期回転数となるように制（
＃ｕして、誘導発電機が同期速度で回転している状態で
前記速度リレー３を接続して並列投入して起動を完了す
るようにしていた。Generally, in an electric power system, one or more generators 2 or multiple generators are connected to a water turbine 6 on a power transmission line 1 as shown in Figure 1, and a speed relay is installed between the generator 2 and the power transmission line 1. By the way, if the generator 2 uses an induction generator, the induction generator N In order to reduce the shock that occurs in the power system when parallel input is performed due to the characteristics of the machines, parallel input was performed by controlling the speed of the induction generator so that it increased to the synchronous rotational speed before starting up. In addition, in the case of an induction generator, startup is defined as the point in time when parallel input is completed. Below, we will explain the starting force method for the water turbine that drives the conventional four-stroke induction generator 2.This conventional method As shown in Figure 2,
1- The speed of the water turbine 6 provided between the water tank 4 and the water discharge tank 5 is controlled by opening and closing the guide vanes 7. After the rotation speed of 49.2 reaches near the synchronous speed, as shown in FIG. Speed detection section t4. Adder 15. The controller 16 controls the rotation speed of the water turbine 6 so that it becomes the synchronous rotation speed of the induction generator (
#u, and with the induction generator rotating at a synchronous speed, the speed relay 3 was connected and turned on in parallel to complete the startup.
この、従来の起動方法では、上水槽水位ＭｗＬが極端に
低下した場合、無負荷開度では水車が同期回転数近傍に
達せずガバナ１７による制御に移行出来ず、起動を完了
することができないという問題が発生する。In this conventional startup method, if the water tank water level MwL drops extremely, the water turbine cannot reach near the synchronous rotation speed at no-load opening and cannot shift to control by the governor 17, making it impossible to complete startup. A problem occurs.
次に、同期発電機を用いた水力発電設備の起動方法にお
いても、同期発電機の起動とは同Ｎ発電機の回動数が同
期速度となり設定電圧が発生している状態を定義してい
るのであるが、上水槽水位が変化したり、極端に低下し
た場合にはヒ述と同様の不具合が発生していた。Next, in the method of starting up hydroelectric power generation equipment using a synchronous generator, starting a synchronous generator is defined as a state in which the number of rotations of the N generator reaches the synchronous speed and a set voltage is generated. However, when the water level in the water tank changes or drops significantly, problems similar to those described above occur.
これらの不具合は水車の起動を開度設定器１’ １とガ
バナ１７によって二段階に回転数制御を行っている為に
発生していた。These problems occurred because the rotation speed of the water turbine was controlled in two stages by the opening setting device 1'1 and the governor 17.
大発明が解決すべき技術的課題は、水車の回転数が静落
差と水車のガイドベーンあるいは入口弁の開度との関係
によって一義的に決まることを利用し、上水槽水位が変
化したり、極端に低下した場合でもスムースに起動でき
る水力発電用水車の起動方法を提供する点にある。The technical problem to be solved by this great invention is to utilize the fact that the rotational speed of a water turbine is uniquely determined by the relationship between the static head and the opening degree of the guide vane or inlet valve of the water turbine. An object of the present invention is to provide a method for starting a water turbine for hydroelectric power generation that can be started smoothly even when the water drop is extremely low.
この技術的課題を解決するために講じる技術的手段は、
水車入口圧を検出して、この検出信号をあらかじめ制御
条件が記憶された関数発生器に入力し、この関数発生器
からの信号により水車のガイドベーンまたは水車人口弁
の水車起動時および無負荷運転時の開度設定を行うこと
である。The technical measures taken to solve this technical problem are:
The water turbine inlet pressure is detected and this detection signal is input to a function generator in which control conditions are stored in advance, and the signal from this function generator is used to activate the water turbine guide vane or water turbine population valve when starting the water turbine and during no-load operation. This is to set the opening degree at the time.
これによって、水車が受ける二不ルギを静落差すなわち
水車入口圧で検出して、この検出信号によりガイドベー
ンの起動開度及び無負荷開度を関数発生器によって決め
て水車を起動し、並列投入を行える同期回転数まで増速
した水車の起動を行う。By this, the two pressures that the water turbine receives are detected by the static head difference, that is, the water turbine inlet pressure, and based on this detection signal, the starting opening and no-load opening of the guide vanes are determined by a function generator, the water turbine is started, and parallel input is performed. The water turbine is started with the speed increased to a synchronous rotation speed that can perform the following steps.
したがって、前記技術的課題は解決され誘導発゛η機あ
るいは同期発電機を並列投入できる同期回転数まで増速
して起動を行い、並列投入時に系統に発生するシ望ツク
を防止することができる。また、従来のように構造が複
雑で高価なガバナを必要としない。Therefore, the above-mentioned technical problem is solved, and the induction generator or synchronous generator can be started by increasing the speed to the synchronous rotation speed that can be connected in parallel, and it is possible to prevent the demand that occurs in the grid when the induction generator or synchronous generator is connected in parallel. . Furthermore, there is no need for a complicated and expensive governor as in the past.
以下、第４図、第６５４ないし第９図を参照して本発明
の詳細な説明する。尚、図中で第１図ないし第３図、第
５図と同一符号で示したものは同一あるいは相当部分を
示している。Hereinafter, the present invention will be described in detail with reference to FIGS. 4 and 654 to 9. In the drawings, the same reference numerals as in FIGS. 1 to 3 and 5 indicate the same or corresponding parts.
第４図中１８は水車入口圧検出器であって、この水車入
口圧検出器１８は誘導発電機２を駆動する水車６に流入
する流入水の水車入口における圧力を検出するものであ
る。この水車人口圧検用器１８での検出値をＰ、水車入
口と放水槽水位ＬＷＬとの水頭差をＳ、静落差をΔＨと
するとΔＨ＝Ｐ＋Ｓ ・・・ 山
となり、（、ｆ）式において水頭差Ｓは一定であるので
検出値Ｐを得れば静落差ΔＨは容易に算出し得るそして
、水車入口圧検出器１８からの出力は第６図に示すよう
に、関数発生器１９に送出されるようになっている。こ
の関数発生器１９にはガイドベーン７の開度条件として
第７図に示すような静落差ΔＨに対する開度にの特性を
示す起動開度向！！２１および無負荷開度曲線２２が予
め設定されている。Reference numeral 18 in FIG. 4 denotes a water turbine inlet pressure detector, and this water turbine inlet pressure detector 18 detects the pressure at the water turbine inlet of inflow water flowing into the water turbine 6 that drives the induction generator 2. If the value detected by this water turbine population pressure tester 18 is P, the water head difference between the water turbine inlet and the water tank water level LWL is S, and the static head difference is ΔH, then ΔH=P+S... It becomes a mountain, and in equation (, f) Since the water head difference S is constant, the static head difference ΔH can be easily calculated by obtaining the detected value P.Then, the output from the turbine inlet pressure detector 18 is sent to the function generator 19 as shown in FIG. It is now possible to do so. This function generator 19 has a starting opening direction which shows characteristics of the opening with respect to static head ΔH as shown in FIG. 7 as the opening condition of the guide vane 7. ! 21 and a no-load opening degree curve 22 are set in advance.
これら起動開度と無負荷開度の関係は第８図に示すよう
に、ガイドベーン７の開度が図中二点鎖線で示す無負荷
開度よりも一点鎖線で示す起動開度の方が大きく設定さ
れている。The relationship between the starting opening degree and the no-load opening degree is as shown in FIG. It is set large.
このような両開度曲線２１．２２に基づいて関数発生器
１９は起動時あるいは無負荷時に対応したガイドベーン
７の開度を算出して、算出結果を加算器２０熱に正値信
号として送出するようになっている。この加算器２０に
はガイドベーン駆動機構９からのフィードバック信号が
負値信号として人力されており、加算器２０は両人力信
号を加算して算出結果をガイドベーン駆動回路８に送出
するようになっている。Based on such double opening curves 21 and 22, the function generator 19 calculates the opening of the guide vane 7 corresponding to startup or no-load, and sends the calculation result to the adder 20 as a positive value signal. It is supposed to be done. A feedback signal from the guide vane drive mechanism 9 is manually input to this adder 20 as a negative value signal, and the adder 20 adds the two input signals and sends the calculation result to the guide vane drive circuit 8. ing.
ガイドベーン駆動回路８は入力信号に基づいてカイトベ
ーン駆動機構９を制御する駆動信号を出力しガイドベー
ン７の開度制御を行うようになっている。The guide vane drive circuit 8 outputs a drive signal for controlling the kite vane drive mechanism 9 based on the input signal to control the opening degree of the guide vane 7.
このような実施例方法の作用を説明する。まず水車の起
動指令が第９図の時間ｔで出力されると関数発生器１９
は前記起動開度曲線２１に基づいてガイドベーン７の開
度信号を出力する。このときガイドベーン駆動機構９は
ガイドベーンをガイドベーン開度特性２３に示すように
、無負荷時より大きな開度ｋに調整し短時間で水車６を
起動する。やがて、時間ｔで水車６の回転数は回転数曲
線２４に示すように、ｒとなり水車の起動が確認され、
一方ガイドベーンは開度ｋまで開くことになる。The operation of such an embodiment method will be explained. First, when the water turbine start command is output at time t in FIG. 9, the function generator 19
outputs an opening signal of the guide vane 7 based on the starting opening curve 21. At this time, the guide vane drive mechanism 9 adjusts the guide vane to a larger opening k than when no load is applied, as shown in the guide vane opening characteristic 23, and starts the water turbine 6 in a short time. Eventually, at time t, the rotation speed of the water turbine 6 becomes r, as shown in the rotation speed curve 24, and the startup of the water turbine is confirmed.
On the other hand, the guide vane will open to the opening degree k.
そして、水車６の起動が確認されると関数発生器１９は
無負荷開度曲線２２に基づいてガイドベーンの開度信号
を出力し、ガイドベーンの開度は開［ｋまで減少し、水
車の回転数は前記同期回転数ｒに収束する。この同期回
転数ｒで水車が回転を続けていることが時間ｔで確認さ
れると、前記速度リレーを接続して並列投入が行われる
。Then, when the startup of the water turbine 6 is confirmed, the function generator 19 outputs a guide vane opening signal based on the no-load opening curve 22, and the guide vane opening decreases to open [k], and the water turbine opens. The rotation speed converges to the synchronous rotation speed r. When it is confirmed at time t that the water turbine continues to rotate at this synchronous rotation speed r, the speed relay is connected and parallel input is performed.
なお、本発明は以上の実施例に限定されるものではない
。例えば水車はガイドベーンによって回転数を制御され
るものに限らず、水車人口弁の開度によって回転数を制
御されるものでもよい。Note that the present invention is not limited to the above embodiments. For example, the rotation speed of a water turbine is not limited to one whose rotation speed is controlled by a guide vane, but may be one whose rotation speed is controlled by the opening degree of a water turbine artificial valve.
第１図は電力系統の構成図、第２図は水力発電設備の概
略構成図、第３図、第５図は従来の水型起動方法を実施
する装置の構成図、第４図、第６図ないし第９図は本発
明の実施例を示す図で、第４図は水力発電設備の概略構
成図、第６図は水車起動力法を実施する装置の構成図、
第７図はガイドベーンの開度条件を示す特性図、第８図
は無負荷開度と起動開度の説明図、第９図はガイドベー
ンの開度および水車の回転数を示す特性図である１８・
・・水車人口圧検出器
１９・・・関数発生器
２１・・・起動開度曲線
２２・・・無負荷開度曲線
特許出願人 久保田鉄工株式会社
代 理 人 弁理士 鈴江 孝−
第７図
静落ゑ４Ｈ
第９図
＠間Ｔ ０Figure 1 is a configuration diagram of the power system, Figure 2 is a schematic configuration diagram of hydroelectric power generation equipment, Figures 3 and 5 are configuration diagrams of equipment that implements the conventional water type startup method, Figures 4 and 6 9 to 9 are diagrams showing embodiments of the present invention, FIG. 4 is a schematic configuration diagram of a hydroelectric power generation facility, FIG. 6 is a configuration diagram of a device implementing the water turbine motive force method,
Figure 7 is a characteristic diagram showing the opening conditions of the guide vane, Figure 8 is an explanatory diagram of the no-load opening and starting opening, and Figure 9 is a characteristic diagram showing the opening of the guide vane and the rotation speed of the water turbine. There are 18.
...Hydraulic turbine population pressure detector 19...Function generator 21...Start-up opening curve 22...No-load opening curve Patent applicant Kubota Iron Works Co., Ltd. Representative Patent attorney Takashi Suzue - Figure 7 Shizuka Falling 4H Figure 9 @ between T 0
Claims (1)
検出信号をあらかしめ制御条件が記憶された関数発生器
に人力し、この関数発生器からの信号により水車のガイ
ドベーンまたは水車込ＩＩ ５ｒの水車起動時および無
負荷運転時の開度設定を行うことを特徴とする水車の起
動方法。In hydroelectric power generation equipment, the water turbine pressure is detected, this detection signal is manually inputted to a function generator in which the control conditions are stored, and the signal from the function generator is used to control the guide vanes of the water turbine or the water turbine II. A method for starting a water turbine characterized by setting an opening degree when starting a 5R water turbine and during no-load operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59066258A JPS60209669A (en) | 1984-04-03 | 1984-04-03 | How to start a water turbine for hydroelectric power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59066258A JPS60209669A (en) | 1984-04-03 | 1984-04-03 | How to start a water turbine for hydroelectric power generation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60209669A true JPS60209669A (en) | 1985-10-22 |
| JPH0220833B2 JPH0220833B2 (en) | 1990-05-10 |
Family
ID=13310651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59066258A Granted JPS60209669A (en) | 1984-04-03 | 1984-04-03 | How to start a water turbine for hydroelectric power generation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60209669A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63183272A (en) * | 1987-01-21 | 1988-07-28 | Meidensha Electric Mfg Co Ltd | Starting device of hydraulic turbine generator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49104043A (en) * | 1973-02-10 | 1974-10-02 |
-
1984
- 1984-04-03 JP JP59066258A patent/JPS60209669A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49104043A (en) * | 1973-02-10 | 1974-10-02 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63183272A (en) * | 1987-01-21 | 1988-07-28 | Meidensha Electric Mfg Co Ltd | Starting device of hydraulic turbine generator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0220833B2 (en) | 1990-05-10 |
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