JPS61210274A - Turbine governor - Google Patents

Turbine governor

Info

Publication number
JPS61210274A
JPS61210274A JP60051039A JP5103985A JPS61210274A JP S61210274 A JPS61210274 A JP S61210274A JP 60051039 A JP60051039 A JP 60051039A JP 5103985 A JP5103985 A JP 5103985A JP S61210274 A JPS61210274 A JP S61210274A
Authority
JP
Japan
Prior art keywords
guide vane
detected
water turbine
value
static head
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
Application number
JP60051039A
Other languages
Japanese (ja)
Inventor
Sohei Umezawa
梅沢　宗平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP60051039A priority Critical patent/JPS61210274A/en
Publication of JPS61210274A publication Critical patent/JPS61210274A/en
Pending legal-status Critical Current

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
    • F03B15/02—Controlling by varying liquid flow
    • F03B15/04—Controlling by varying liquid flow of turbines
    • F03B15/06—Regulating, i.e. acting automatically
    • 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

Abstract

PURPOSE:To make such rotational frequency as being less in a time lag controllable, by taking out a functional relationship between a hydraulic turbine generator load value and a guide vane reference opening value according to a detecting signal for a static head and, on the basis of this load value, finding the guide vane opening value. CONSTITUTION:There is provided with a function generator 8, which stores a functional relationship between a hydraulic turbine generator load value and a guide vane reference opening value, at every different static head in advance. In addition there are also provided with pressure detectors 4 and 5 detecting each flowing water pressure at both inlet and outlet sides of a hydraulic turbine 1 and, after these detecting pressure values are compensated by measuring high difference compensation 6a and 6b, the compared output is inputted in the function generator 8 as a detected static head. On the other hand, a load value of a hydraulic turbine generator 9 is detected by a current measuring instrument 10 as a current value, and the output is inputted into the function generator 8. And, the detected load value is applied to the functional relationship taken out by the detected static head, finding the guide vane reference opening, and a guide vane 2 is controlled according to a difference signal with the actual opening by an opening gauge 12.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は３水車の回転数（速度）を水車発電機の負荷変
動にかかわらず一定に保つ水車調速機に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a water turbine governor that keeps the rotational speed (speed) of three water turbines constant regardless of load fluctuations of the water turbine generator.

（従来技術） 水車調速機における回転数制御は、通常水車の回転数を
検出し、設定回転数との比較からガイドベーン開度を求
める方式であり、近年ではこれに水車発電機の負荷量を
検出して、水車の入口−出口圧の静落差、即ち水車入力
との比較からガイドベーン開度を可変するものが提案さ
れている。(Prior art) Rotation speed control in a water turbine governor is usually a method that detects the rotation speed of the water turbine and determines the opening degree of the guide vane from a comparison with the set rotation speed. It has been proposed to detect the static head difference between the inlet and outlet pressures of the water turbine, that is, to vary the opening degree of the guide vane based on a comparison with the water turbine input.

しかし、水車回転数を一定に固定する上で、水車入力と
ガイドベーン開度の間、および水車発電機出力とガイド
ベーン開度の関係は、水車損失。However, when the rotation speed of the turbine is fixed at a constant value, the relationship between the turbine input and the guide vane opening, and the relationship between the turbine generator output and the guide vane opening are determined by the turbine loss.

水車発電機損失のために直線的な比例関係にないので、
負荷変動後のガイドベーン開度の落着きには時間を要し
た。そのため、上記水車損失および水車発電機損失を測
定し、これを補正情報として用いることも考えら性てい
るが、制御系が複雑化し、また正確に上記各損失を取出
すことが至難であった。Because there is no linear proportional relationship due to the water turbine generator loss,
It took time for the guide vane opening to settle down after the load changed. Therefore, it has been considered to measure the water turbine loss and water turbine generator loss and use this as correction information, but this would complicate the control system and make it extremely difficult to accurately extract each of the losses.

ｒｇｓ明が解決しようとする問題点） 本発明は以上の点に鑑み、水車入力を異なる静落差ごと
に捉え、各別の静落差ごとに水車発電機負荷量とガイド
ベーン基準開度値との関係を予め関数として実測してお
くことによって、制御時には検出された静落差に対応す
る関数関係を取出し、これによってガイドベーン基準開
度値を求め。Problems to be solved by RGS Akira) In view of the above points, the present invention captures the water turbine input for each different static head, and calculates the relationship between the water turbine generator load amount and the guide vane standard opening value for each static head. By actually measuring the relationship as a function in advance, the functional relationship corresponding to the detected static head difference is extracted during control, and the reference guide vane opening value is determined from this.

時間遅れの少ない回転数制御を可能とするものである。This enables rotation speed control with little time delay.

（問題を解決するための手段） 本発明は、水車回転数が一定回転数に保たれる水車発電
機の負荷量とガイドベーン基準開度値との関数関係を異
なる静落差ごとに予め記憶して、入力される一方の検出
静落差信号に対応するｒＪＲ数関係から他方の検出負荷
信号を用いガイドベーン基準開度値を求める関数発生器
を設け、この出力をフィードバックされる検出ガイドベ
ーン開度と比較器で比較してガイドベーン駆動装置を制
御するものである。(Means for Solving the Problem) The present invention stores in advance the functional relationship between the load amount of the water turbine generator and the guide vane reference opening value for each different static head, so that the water turbine rotation speed is maintained at a constant rotation speed. Then, a function generator is provided which calculates the guide vane reference opening value using the other detected load signal from the rJR number relationship corresponding to one of the input detected static head signals, and this output is fed back to the detected guide vane opening value. The guide vane drive device is controlled by comparing the values with a comparator.

（実施例） 以下１本発明の一実施例を図面によって説明する。(Example) An embodiment of the present invention will be described below with reference to the drawings.

第１図において、ｌは水車、２はガイドベーン、３はガ
イドベーン駆動装置を示す、４は水車ｌの入口側の流水
圧を検出する圧力検出器、５は出口側の流水圧を検出す
る圧力検出器であって、これらの検出圧は第２図に示す
測定高差補正器６ａ、６ｂによって補正された後比較器
７で比較され、その比較出力が検出静落差（水車入力）
として関数発生器８に入力される。In Fig. 1, l is a water wheel, 2 is a guide vane, 3 is a guide vane driving device, 4 is a pressure detector that detects the water pressure on the inlet side of the water wheel l, and 5 is a pressure detector that detects the water pressure on the outlet side. This is a pressure detector, and these detected pressures are corrected by measurement height difference correctors 6a and 6b shown in FIG. 2, and then compared by a comparator 7, and the comparison output is the detected static head (water turbine input).
is input to the function generator 8 as

この関数発生器８には予め異なる静落差ごとに水車発電
機負荷量とガイドベーン基準開度との関数関係が記憶さ
れる。即ち、水車１および水車発電４１！８の試運転状
態において、異なる静落差ごとに水車回転数が目標回転
数に落着く水車発電機負荷量とガイドベーン開度値との
関係を実測データとして求めて両者の関数関係（関数式
）をはじき出し、これが関数発生器８に記憶される。該
関数発生器８に検出静落差が入力されると、この検出静
落差に対応する水車発電機負荷量対ガイドベーン基準開
度との関数関係が取り出されるようになっている。一方
、水車発電機８の負荷量は電流値としては電流測定器ｌ
Ｏで検出され、これが関数発生器８に入力される。関数
発生器８では上記検出静落差゛によって取り出された第
３図のような関数関係に検出負荷量を当て嵌めてガイド
ベーン基準開度を算出し、これを比較器１１に出力する
。第３図中のａは無負荷開度である。比較器１１にはガ
イドベーン２の現実の開度値がガイドベーン開度計１２
で求められてフィードバックされているので。This function generator 8 stores in advance the functional relationship between the water turbine generator load amount and the guide vane reference opening degree for each different static head. That is, in the trial operation state of the water turbine 1 and the water turbine generator 41!8, the relationship between the water turbine generator load amount and the guide vane opening value at which the water turbine rotation speed settles to the target rotation speed for each different static head is obtained as actual measurement data. A functional relationship (function formula) between the two is extracted and stored in the function generator 8. When the detected static head difference is input to the function generator 8, a functional relationship between the water turbine generator load amount and the guide vane reference opening degree corresponding to the detected static head difference is extracted. On the other hand, the load amount of the water turbine generator 8 can be measured as a current value using a current measuring device.
0, and this is input to the function generator 8. The function generator 8 calculates the guide vane standard opening degree by applying the detected load amount to the functional relationship as shown in FIG. A in FIG. 3 is the no-load opening degree. The actual opening value of the guide vane 2 is stored in the comparator 11 as shown in the guide vane opening meter 12.
Because it is requested and given feedback.

比較器１１はガイドベーン基準開度とフトイードパック
量との差信号をガイドベーン駆動装置３に入力して差信
号が零に落着くようにガイドベーン２の開度を調整する
。The comparator 11 inputs a difference signal between the guide vane reference opening degree and the foot-ead pack amount to the guide vane driving device 3, and adjusts the opening degree of the guide vane 2 so that the difference signal settles to zero.

関数発生器８は第２図中鎖線で囲んだ測定高差補正器８
ａ、ｅｂおよび比較器７，１１を含む部分が、中央情報
処理回路ＣＰＵ、リードオンメモリＲＯＭを用いる周知
のマイクロコンピュータであって良い。The function generator 8 is the measurement height difference corrector 8 surrounded by the chain line in FIG.
The portion including a, eb and comparators 7 and 11 may be a well-known microcomputer using a central information processing circuit CPU and a read-on memory ROM.

上記のように関数発生器８には異なる静落差ごとの水車
発電機負荷量対ガイドベーン基準開度の関数関係を予め
実測データによって求めて記憶させている。この求めた
関係は当然に水車損失１発電機損失、さらには水車１、
水車発電機９、さらにはガイドベーン周りの個々の特性
上のバラツキを含んだものであるから、検出静落差が変
化する毎に上記関数関係を選び直し、これに検出水車発
電機負荷量を当て嵌めることで直接最も適当とするガイ
ドベーン基準開度が求められる。As described above, the function generator 8 stores the functional relationship between the load of the water turbine generator and the standard opening of the guide vane for each different static head, determined in advance from actual measurement data. Naturally, this obtained relationship is based on water turbine loss 1 generator loss, and furthermore, water turbine 1,
Since this includes variations in individual characteristics around the water turbine generator 9 and the guide vanes, the above functional relationship is reselected each time the detected static head changes, and the detected water turbine generator load amount is applied to this. By fitting, the most appropriate guide vane reference opening degree can be directly determined.

（効果） 本発明によれば、水車回転数が一定回転数に保たれる負
荷量とガイドベーン基準開度値との関数関係を異なる静
落差ごとに関数発生器に予め記憶させ、これに入力され
る一方の検出静落差信号に対応する関数関係から、入力
される他方の検出負荷量信号を用いガイドベーンの基準
開度値を求めるようにしたので、水車損失および水車発
電機損失等を測定算出し、その算出量を制御系に組込む
ようなプロセスを作る必要がなく、水車回転数制御系が
簡素化すると共に１時間遅れの少ない正確な制御が行え
る。(Effect) According to the present invention, the functional relationship between the load amount that keeps the water turbine rotation speed at a constant rotation speed and the guide vane reference opening value is stored in advance in the function generator for each different static head, and is input into the function generator. From the functional relationship corresponding to one detected static head signal, the reference opening value of the guide vane is determined using the other input detected load amount signal, so it is possible to measure water turbine loss, water turbine generator loss, etc. There is no need to create a process to calculate and incorporate the calculated amount into the control system, which simplifies the water turbine rotation speed control system and allows accurate control with less one-hour delay.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明にかかる水車調速機の一実施例を示し、第
１図は水車およびガイドベーン部分の概略図、第２図は
制御系のブロック図、第３図は関数発生器に予め記憶す
る水車発電機負荷量対ガイドベーン基準開度の関数関係
の一例を示すグラフである。 １・・・水車 ２・・・ガイドベーン ３・・・ガイドベーン駆動装置 ８・・・関数発生器 ９・・・水車発電機 １１・・・比較器The drawings show an embodiment of the water turbine speed governor according to the present invention, in which Fig. 1 is a schematic diagram of the water turbine and guide vane portions, Fig. 2 is a block diagram of the control system, and Fig. 3 is a diagram showing the flowchart stored in advance in the function generator. 2 is a graph showing an example of a functional relationship between a water turbine generator load amount and a reference guide vane opening degree. 1... Water turbine 2... Guide vane 3... Guide vane drive device 8... Function generator 9... Water turbine generator 11... Comparator

Claims (1)

【特許請求の範囲】[Claims] （１）水車の入口−出口間の検出静落差と、水車発電機
の検出負荷量とによって、水車回転数が一定となるガイ
ドベーン基準開度値を求めるもので、水車回転数が一定
回転数に保たれる水車発電機の負荷量とガイドベーン基
準開度値との関数関係を異なる静落差ごとに予め記憶し
て、入力される一方の検出静落差信号に対応する関数関
係から他方の検出負荷量信号を用いガイドベーン基準開
度値を求める関数発生器を設け、この出力をフィードバ
ックされる検出ガイドベーン開度と比較器で比較して、
ガイドベーン駆動装置を制御する水車調速機。(1) Based on the detected static head difference between the inlet and outlet of the water turbine and the detected load amount of the water turbine generator, the guide vane reference opening value at which the water turbine rotation speed is constant is determined. The functional relationship between the load amount of the water turbine generator and the reference opening value of the guide vane, which is maintained at A function generator is provided to determine the reference guide vane opening value using the load amount signal, and this output is compared with the detected guide vane opening degree fed back using a comparator.
A water wheel governor that controls the guide vane drive.
JP60051039A 1985-03-13 1985-03-13 Turbine governor Pending JPS61210274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60051039A JPS61210274A (en) 1985-03-13 1985-03-13 Turbine governor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60051039A JPS61210274A (en) 1985-03-13 1985-03-13 Turbine governor

Publications (1)

Publication Number Publication Date
JPS61210274A true JPS61210274A (en) 1986-09-18

Family

ID=12875657

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60051039A Pending JPS61210274A (en) 1985-03-13 1985-03-13 Turbine governor

Country Status (1)

Country Link
JP (1) JPS61210274A (en)

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