JPS6130156B2 - - Google Patents
Info
- Publication number
- JPS6130156B2 JPS6130156B2 JP54084033A JP8403379A JPS6130156B2 JP S6130156 B2 JPS6130156 B2 JP S6130156B2 JP 54084033 A JP54084033 A JP 54084033A JP 8403379 A JP8403379 A JP 8403379A JP S6130156 B2 JPS6130156 B2 JP S6130156B2
- Authority
- JP
- Japan
- Prior art keywords
- rotation speed
- rotational speed
- pelton
- rated
- nozzle
- 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.)
- Expired
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)
Description
【発明の詳細な説明】
この発明は、ペルトン水車の起動時に、その回
転数が短い時間で安定した定格回転数になるよう
にするペルトン水車の起動方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for starting a Pelton water turbine, which allows the rotation speed to reach a stable rated rotation speed in a short period of time when the Pelton water turbine is started.
水圧鉄管の長さが長い水力発電所において同期
発電機を駆動するペルトン水車を起動して、その
発電機を他の発電機と並列に接続する場合には、
ペルトン水車のニードル弁を制御することによつ
て回転数が定格回転数になるようにしている。と
ころが水圧鉄管が長い場合には水圧上昇を低く押
える必要があるため、ニードル弁をゆつくり動か
してニードル弁動作時間を長くしなければなら
ず、同期発電機が並列運転できるまでに非常に長
い時間がかかつていた。 When starting a Pelton turbine that drives a synchronous generator in a hydroelectric power plant with a long penstock, and connecting that generator in parallel with other generators,
By controlling the needle valve of the Pelton turbine, the rotation speed is kept at the rated rotation speed. However, if the penstock is long, it is necessary to keep the water pressure rise low, so the needle valve must be moved slowly to increase the needle valve operation time, and it takes a very long time before the synchronous generator can operate in parallel. He was stiff.
すなわち、従来においては第１図に示すように
ニードル弁を徐々に起動開度まで開いてペルトン
水車の回転を開始し、ペルトン水車の回転数が定
格回転数まで上昇したとき、ニードル弁を徐々に
無負荷開度まで閉じる。これによつてペルトン水
車の回転数は定格回転数以上まで一旦上昇した
後、次第に定格回転数まで下降し、定格回転数で
連続運転することになる。このため同期発電機の
回転数が定格回転数になつて並列運転ができるよ
うになるまでの時間が非常に長くかかり、この間
無拘束速度で運転されているので機械振動が発生
したり、遠心力によつて生ずる高い応力が機械に
作用して強度上問題となることがあつた。 That is, in the past, as shown in Figure 1, the needle valve was gradually opened to the starting opening to start the rotation of the Pelton turbine, and when the rotation speed of the Pelton turbine rose to the rated rotation speed, the needle valve was gradually opened. Close to no-load opening. As a result, the rotational speed of the Pelton water turbine once increases to the rated rotational speed or higher, and then gradually decreases to the rated rotational speed, resulting in continuous operation at the rated rotational speed. For this reason, it takes a very long time for the rotational speed of the synchronous generator to reach the rated rotational speed and parallel operation is possible.During this time, the generator is operated at an unrestricted speed, causing mechanical vibrations and centrifugal force. The high stress generated by this process sometimes acts on the machine, causing strength problems.
この発明は上述の欠点を除去し、同期発電機が
並列運転できるまでの時間が短くてすみ、安全な
起動ができるようにしたもので、次にその一実施
例について説明する。 The present invention eliminates the above-mentioned drawbacks, reduces the time required for parallel operation of the synchronous generator, and enables safe startup. Next, one embodiment of the invention will be described.
第２図は通常のペルトン水車の概念的な縦断側
面図であつて、１はペルトン水車のランナ、２は
バケツト、３はノズル、４はニードル弁であり、
ノズル３の先端外方にはデフレクタ５が軸６を中
心として回動できるように取り付けられている。
デフレクタ５は、通常ペルトン水車の負荷急減時
に軸６を中心として第２図の反時計方向に回動
し、ノズル３より噴出する水を瞬時に転流してバ
ケツト２に達しないようにするものである。 Fig. 2 is a conceptual longitudinal side view of a normal Pelton turbine, in which 1 is the runner of the Pelton turbine, 2 is the bucket, 3 is the nozzle, and 4 is the needle valve.
A deflector 5 is attached to the outside of the tip of the nozzle 3 so as to be rotatable about a shaft 6.
The deflector 5 usually rotates counterclockwise around the shaft 6 in the counterclockwise direction in FIG. 2 when the load on the Pelton turbine suddenly decreases, and instantly diverts the water spouted from the nozzle 3 so that it does not reach the bucket 2. be.
この発明のペルトン水車の起動方法に基づいて
ペルトン水車の回転を開始するときには、ニード
ル弁４を第３図に示すように徐々に開いてランナ
１の回転を開始し、そのままのニードル弁開度に
保持する。 When starting the rotation of the Pelton water turbine based on the Pelton water turbine starting method of the present invention, the needle valve 4 is gradually opened as shown in FIG. Hold.
ランナ１の回転数が次第に上昇して定格回転数
より僅かに高い回転数Ａまで上昇した時点t1にお
いて、デフレクタ５を第２図における反時計方向
である閉鎖方向に作動させると、ノズル３から噴
出している水の一部は直ちに転流されてバケツト
２に当らないようになる。このためランナ１の回
転数は機械損失、空転損失により低下することに
なる。 At time t1 , when the rotational speed of the runner 1 gradually increases to a rotational speed A slightly higher than the rated rotational speed, when the deflector 5 is operated in the closing direction, which is the counterclockwise direction in FIG. A part of the spouting water is immediately diverted so that it does not hit the bucket 2. Therefore, the rotation speed of the runner 1 decreases due to mechanical loss and idling loss.
ランナ１の回転数が低下して定格回転数より僅
かに低い回転数Ｂまで低下した時点t2において、
デフレクタ５を第２図における時計方向に回動し
て開き、ノズル３より噴出する水の全部がバケツ
ト２に当るようにする。 At time t 2 when the rotation speed of the runner 1 has decreased to a rotation speed B slightly lower than the rated rotation speed,
The deflector 5 is rotated clockwise in FIG. 2 to open so that all of the water jetted from the nozzle 3 hits the bucket 2.
一方、ランナ１が回転を開始して定格回転数に
達した時点から、従来と同様にニードル弁４を
徐々に無負荷開度まで閉じ、ランナ１の回転数を
定格回転数に落ち着かせる。 On the other hand, from the time when the runner 1 starts rotating and reaches the rated rotational speed, the needle valve 4 is gradually closed to the no-load opening as in the conventional case, and the rotational speed of the runner 1 is allowed to settle to the rated rotational speed.
この発明はノズル３の先端に取り付けてあるデ
フレクタ５を作動させてランナ１の起動時の回転
数を制御するので、水圧鉄管の水圧上昇を来たす
ことなく短時間のうちにランナ１の回転数を定格
回転数に落ち着かせることができ、振動や高い応
力を生ずることなく容易に同期発電機を並列運転
させることが可能となる効果がある。 This invention operates the deflector 5 attached to the tip of the nozzle 3 to control the rotational speed of the runner 1 at startup, so the rotational speed of the runner 1 can be adjusted in a short time without causing a rise in water pressure in the penstock. This has the effect of allowing the rotation speed to settle to the rated speed, and making it possible to easily operate the synchronous generators in parallel without causing vibration or high stress.
なお、t1時点におけるデフレクタ５の作動およ
びt2時点におけるデフレクタ５の復帰は、ランナ
１の回転数検出器（図示せず）の出力信号によつ
て在来の制御技術で自動的に行なうことができ
る。 Note that the activation of the deflector 5 at time t 1 and the return of the deflector 5 at time t 2 are automatically performed using conventional control technology based on the output signal of the rotation speed detector (not shown) of the runner 1. I can do it.
第１図は従来のペルトン水車起動の際の回転数
の変化を示すグラフ、第２図はペルトン水車の概
念的な縦断側面図、第３図はこの発明に基づくペ
ルトン水車起動方法によつた場合の回転数の変化
を示すグラフである。
１……ランナ、２……バケツト、３……ノズ
ル、５……デフレクタ。
Figure 1 is a graph showing the change in rotation speed when starting a conventional Pelton turbine, Figure 2 is a conceptual longitudinal side view of a Pelton turbine, and Figure 3 is a graph showing the change in rotation speed when starting a Pelton turbine according to the present invention. It is a graph showing a change in the rotation speed of. 1...Runner, 2...Bucket, 3...Nozzle, 5...Deflector.
Claims (1)
に高い回転数まで上昇したとき、ノズルより噴出
する水の一部がバケツトに当らないようにノズル
先端のデフレクタを作動させて一部の噴出水流を
転流させ、その後前記ペルトン水車の回転数が定
格回転数より僅かに低い回転数まで低下したと
き、ノズルより噴出する水の全部がバケツトに当
るように前記デフレクタを戻すことを特徴とする
ペルトン水車の起動方法。1 When the rotational speed of the Pelton turbine increases to a rotational speed slightly higher than the rated rotational speed, a deflector at the tip of the nozzle is activated to prevent some of the water ejected from the nozzle from hitting the bucket. A Pelton water turbine characterized in that when the rotation speed of the Pelton water turbine decreases to a rotation speed slightly lower than the rated rotation speed after commutation, the deflector is returned so that all of the water spouted from the nozzle hits the bucket. How to start.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8403379A JPS569670A (en) | 1979-07-04 | 1979-07-04 | Starting method of pelton turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8403379A JPS569670A (en) | 1979-07-04 | 1979-07-04 | Starting method of pelton turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS569670A JPS569670A (en) | 1981-01-31 |
| JPS6130156B2 true JPS6130156B2 (en) | 1986-07-11 |
Family
ID=13819212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8403379A Granted JPS569670A (en) | 1979-07-04 | 1979-07-04 | Starting method of pelton turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS569670A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11578161B2 (en) | 2020-12-30 | 2023-02-14 | Samsung Display Co., Ltd. | Resin composition and display device including adhesive layer formed from the same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6189985A (en) * | 1984-10-11 | 1986-05-08 | Fuji Electric Co Ltd | Controlling method of deflector in discharge operation of pelton wheel |
| ES2364206B1 (en) * | 2008-05-22 | 2012-06-26 | Endesa Generacion, S.A. | SYSTEM AND METHOD OF SPEED CONTROL AND REGULATION FOR PELTON TYPE HYDRAULIC GROUPS, AS WELL AS HYDRAULIC WIND POWER STATIONS THAT INCLUDE THIS SYSTEM. |
-
1979
- 1979-07-04 JP JP8403379A patent/JPS569670A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11578161B2 (en) | 2020-12-30 | 2023-02-14 | Samsung Display Co., Ltd. | Resin composition and display device including adhesive layer formed from the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS569670A (en) | 1981-01-31 |
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