JPH07217526A - Output adjusting device for small hydraulic power generating equipment - Google Patents
Output adjusting device for small hydraulic power generating equipmentInfo
- Publication number
- JPH07217526A JPH07217526A JP6012524A JP1252494A JPH07217526A JP H07217526 A JPH07217526 A JP H07217526A JP 6012524 A JP6012524 A JP 6012524A JP 1252494 A JP1252494 A JP 1252494A JP H07217526 A JPH07217526 A JP H07217526A
- Authority
- JP
- Japan
- Prior art keywords
- load
- demand side
- generator
- current
- water
- 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
-
- 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、例えば僻地の発電設備
などのように、比較的電力消費の少ない負荷に電力供給
する設備に適用される小水力発電設備の出力調整装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an output adjusting device for a small hydroelectric power generation facility applied to a facility for supplying power to a load that consumes relatively little power, such as a power generation facility in a remote area.
【０００２】[0002]
【従来の技術】一般に、この種の装置においては、発電
機用の調速機などを設け、発電機の運転時における需要
側負荷の変動にともなう発電周波数の変化に対応して、
水車の案内羽根の開度を加減することが行なわれている
が、小水力発電設備に上記調速機などを設けて負荷変動
に対応させることは、構造が複雑になり、設備コストも
上昇するといったように、積極的に採用し難いものであ
る。2. Description of the Related Art Generally, in this type of device, a speed governor for a generator is provided to cope with a change in power generation frequency due to a change in demand side load during operation of the generator.
Although the opening of the guide vanes of a water turbine has been adjusted, providing a small hydraulic power generation facility with the above governor to respond to load fluctuations complicates the structure and increases the facility cost. For example, it is difficult to actively adopt it.
【０００３】そのため、従来、例えば特開昭５６−１２
９７６９号公報などに開示されているように、水車によ
り回転駆動される発電機に対して調整負荷としてのダミ
ー負荷を設け、需要側負荷の変動に応じて変化する発電
機の発電周波数を検出して、その検出された需要側負荷
に反比例する出力電流を上記ダミー負荷に流すことによ
って、つまり、需要側の変動分に応じてダミー負荷値を
調整することで、発電機にかかる全負荷が常に一定にな
るようにしたものが提案されている。Therefore, conventionally, for example, JP-A-56-12
As disclosed in Japanese Patent No. 9769, etc., a dummy load as a regulated load is provided for a generator that is rotationally driven by a water turbine, and the generator generation frequency that changes according to fluctuations in the demand side load is detected. Then, by flowing an output current inversely proportional to the detected demand side load to the dummy load, that is, by adjusting the dummy load value according to the fluctuation on the demand side, the total load on the generator is always It is proposed to make it constant.
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記した構成
の従来の小水力発電設備の出力調整装置では、需要側負
荷に反比例する容量のダミー負荷を調整負荷として発電
機にかけるようにしているだけであるから、例えば需要
側負荷が減少している時でも、水車を駆動させるための
水の使用量は一定であり、水が無駄使いされるという難
点があった。However, in the conventional output adjusting device for a small hydroelectric power plant having the above-mentioned structure, a dummy load having a capacity inversely proportional to the load on the demand side is applied to the generator as an adjusting load. Therefore, for example, even when the load on the demand side is reduced, the amount of water used to drive the water turbine is constant, and there is a problem that the water is wasted.
【０００５】本発明は上記実情に鑑みてなされたもの
で、需要側負荷の変動に対して発電機にかかる全負荷を
常に一定に保てるだけでなく、水の無駄使いをなくする
ことができる小水力発電設備の出力調整装置を提供する
ことを目的としている。The present invention has been made in view of the above circumstances, and not only keeps the total load on the generator constant with respect to fluctuations in the load on the demand side, but also can reduce waste of water. It is an object of the present invention to provide an output adjustment device for hydroelectric power generation equipment.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る小水力発電設備の出力調整装置は、水
圧管の出口に設けられた水車により回転駆動される発電
機に対するダミー負荷を設け、需要側負荷の変動に応じ
て変化する発電機の発電周波数を検出して、上記需要側
負荷に反比例する出力電流を上記ダミー負荷に流して発
電機にかかる全負荷を一定に制御させるようにした小水
力発電設備の出力調整装置であって、上記ダミー負荷に
流れる電流量を検出する電流量検出手段と、この電流量
検出手段による検出値が電流量設定値の所定範囲内に保
たれるように、上記水車の上流側に介在させた電動式入
口弁の開度を自動制御するコントローラとを備えたもの
である。In order to achieve the above object, an output adjusting device for a small hydraulic power plant according to the present invention is a dummy load for a generator rotationally driven by a water turbine provided at an outlet of a hydraulic pipe. To detect the power generation frequency of the generator that changes according to the fluctuation of the load on the demand side, and to flow an output current inversely proportional to the load on the demand side to the dummy load to control the total load on the generator constant. In the output adjusting device of the small hydroelectric power generation facility, the current amount detecting means for detecting the amount of current flowing through the dummy load, and the detection value by the current amount detecting means are kept within a predetermined range of the current amount set value. A controller for automatically controlling the opening degree of the electric inlet valve interposed on the upstream side of the water turbine so as to be drooped.
【０００７】[0007]
【作用】本発明によれば、発電機の運転時に需要側が変
動すると、これにともなって変化する発電機の発電周波
数が検出され、その検出された発電周波数値と周波数設
定値との比較にもとづいて需要側負荷に反比例する出力
電流がダミー負荷に流れて余剰電力が消費され、これに
よって、発電機にかかる全負荷が一定に保持されること
にな。According to the present invention, when the demand side fluctuates during the operation of the generator, the power generation frequency of the generator which changes accordingly is detected, and based on the comparison between the detected power generation frequency value and the frequency set value. As a result, an output current that is inversely proportional to the load on the demand side flows to the dummy load, and surplus power is consumed, which keeps the total load on the generator constant.
【０００８】このとき、上記ダミー負荷に流れる電流量
が検出されてその検出値がコントローラに入力され、こ
のコントローラにおいて、電流量検出値が電流量設定値
の所定範囲内に保たれるように、電動式入口弁の開度が
自動制御されることになり、したがって、需要側負荷が
減少した場合、水車に対する水の供給量も少なくなっ
て、水の無駄使いが抑制されることになる。At this time, the amount of current flowing through the dummy load is detected and the detected value is input to the controller, and in this controller, the detected amount of current is kept within a predetermined range of the set amount of current, Since the opening degree of the electric inlet valve is automatically controlled, therefore, when the load on the demand side is reduced, the amount of water supplied to the water turbine is also reduced and waste of water is suppressed.
【０００９】[0009]
【実施例】以下、本発明の一実施例を図面にもとづいて
説明する。図１は本発明の一実施例による小水力発電設
備の出力調整装置を示すブロック構成図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an output adjusting device for a small hydroelectric power generation facility according to an embodiment of the present invention.
【００１０】図１において、１は上水槽であり、この上
水槽１に接続された水圧管２の出口には、該水圧管２内
を重力降下する水Ｗの勢いにより回転される水車３が配
置されており、この水車３の上流側部位の水圧管２に
は、モータ４を介して開閉駆動される電動式入口弁５が
介在されている。６は上記水車３により回転駆動され
て、需要側負荷に電力を供給する発電機である。In FIG. 1, reference numeral 1 is a water tank, and at the outlet of a water pressure pipe 2 connected to this water tank 1, there is a water turbine 3 which is rotated by the force of water W gravity-falling inside the water pressure pipe 2. An electric inlet valve 5 that is opened and closed via a motor 4 is interposed in the hydraulic pipe 2 at the upstream side of the water turbine 3. Reference numeral 6 is a generator that is rotationally driven by the water turbine 3 and supplies electric power to the load on the demand side.
【００１１】７は上記需要側負荷の変動に対して発電機
６を全負荷に調整させるためのダミー負荷であり、例え
ばシーズヒータなどが用いられる。８は上記需要側負荷
の変動時に発電機６の発電周波数を検出する周波数検出
器、９は上記周波数検出器８による周波数検出値と、周
波数設定器１０に設定された周波数設定値とを比較する
比較器である。Reference numeral 7 denotes a dummy load for adjusting the generator 6 to the full load with respect to the fluctuation of the demand side load, and for example, a sheath heater or the like is used. Reference numeral 8 is a frequency detector that detects the power generation frequency of the generator 6 when the demand side load changes, and 9 compares the frequency detection value by the frequency detector 8 with the frequency setting value set in the frequency setting device 10. It is a comparator.
【００１２】１１は上記発電機６の出力側とダミー負荷
７との間に介挿されたサイリスタあるいはトライアック
などのようなゲート付きスイッチング素子であり、ゲー
ト信号が印加された際、比較器９からの出力を受けて、
上記需要側負荷の変動に反比例する出力電流を上記ダミ
ー負荷７に流すことにより、負荷を調整して発電機６に
かかる全負荷を一定に制御するためのものである。Reference numeral 11 is a switching element with a gate such as a thyristor or a triac inserted between the output side of the generator 6 and the dummy load 7, and when a gate signal is applied, it is output from the comparator 9. Receiving the output of
By flowing an output current inversely proportional to the fluctuation of the demand side load to the dummy load 7, the load is adjusted and the total load on the generator 6 is controlled to be constant.
【００１３】１２は上記スイッチング素子１１のアノー
ド側に設けられた検流コイル１３により、上記ダミー負
荷７に流れる電流量を検出する電流検出器であり、上記
コイルとともに電流量検出手段１４を構成している。１
５は上記電流検出器１２による電流検出値が電流設定器
１６に設定されている電流量設定値の所定の範囲内に保
たれるように、上記モータ４に対して開度制御信号を送
出するコントローラである。Reference numeral 12 is a current detector for detecting the amount of current flowing through the dummy load 7 by means of a current detection coil 13 provided on the anode side of the switching element 11, and constitutes current amount detection means 14 together with the coil. ing. 1
Reference numeral 5 sends an opening control signal to the motor 4 so that the current detection value of the current detector 12 is kept within a predetermined range of the current amount setting value set in the current setting device 16. The controller.
【００１４】つぎに、上記構成の装置の動作について説
明するまず初めに、コントローラ１５からの開度制御信
号によりモータ４を介して電動式入口弁５を一定開度ま
で開放させる。これによって、水圧管２内を重力降下す
る水Ｗの勢いにより水車３が回転して、発電機６が回転
駆動され、需要側負荷に対して電力が供給される。そし
て、発電機６の発電周波数が周波数検出器８により検出
され、その検出値と周波数設定器１０に設定されている
周波数設定値とが比較器９において比較される。Next, the operation of the device having the above-described structure will be described. First, the motor-operated inlet valve 5 is opened to a constant opening via the motor 4 by the opening control signal from the controller 15. As a result, the turbine 3 is rotated by the momentum of the water W gravity-falling in the hydraulic pressure pipe 2, the generator 6 is rotationally driven, and electric power is supplied to the demand side load. Then, the power generation frequency of the generator 6 is detected by the frequency detector 8, and the detected value is compared with the frequency set value set in the frequency setter 10 in the comparator 9.
【００１５】このような運転状態において、上記需要側
負荷が例えば減少すると、上記発電機６の発電周波数が
高くなるので、上記比較器９では周波数検出値が周波数
設定値以上であることが判別される。そして、このと
き、ゲート信号の印加によって上記スイッチング素子１
１がＯＮし、上記需要側負荷の減少量に反比例する出力
電流が上記スイッチング素子１１を経てダミー負荷７側
に流れ余剰電力が消費される。これによって、発電機６
には、需要側負荷に反比例する容量の調整負荷がかけら
れることになり、発電機６にかかる全負荷が一定に保た
れる。In such an operating state, when the demand side load decreases, for example, the power generation frequency of the generator 6 increases, so that the comparator 9 determines that the frequency detection value is equal to or higher than the frequency set value. It At this time, the switching element 1 is applied by applying a gate signal.
When 1 is turned on, an output current inversely proportional to the reduction amount of the load on the demand side flows through the switching element 11 to the dummy load 7 side, and excess power is consumed. This allows the generator 6
A regulated load having a capacity inversely proportional to the load on the demand side is applied to the engine, and the total load on the generator 6 is kept constant.
【００１６】上記ダミー負荷７に流れる電流量は検流コ
イル１３を介して電流検出器１２により検出され、その
検出値がコントローラ１５に入力される。このコントロ
ーラ１５では、上記電流量検出値が電流設定器１６に設
定されている電流量設定値の所定範囲内にあるか否かを
判別し、その判別において、上記需要側負荷が減少して
上記電流量検出値が電流量設定値の所定範囲を越えてい
る場合、上記モータ４に対して開度を小さくさせるため
の制御信号を送出し、これによって、電動式入口弁５の
開度は、上記電流量検出値が電流量設定値の所定範囲内
に保たれるように小さく調整され、したがって、水車３
を回転させるための水Ｗの使用量が節約されることにな
る。The amount of current flowing through the dummy load 7 is detected by the current detector 12 via the current detection coil 13, and the detected value is input to the controller 15. The controller 15 determines whether or not the current amount detection value is within a predetermined range of the current amount setting value set in the current setting device 16, and in the determination, the demand side load decreases and When the detected current amount exceeds the predetermined range of the set current amount, a control signal for reducing the opening is sent to the motor 4, whereby the opening of the electric inlet valve 5 is The current detection value is adjusted to a small value so as to be kept within a predetermined range of the current setting value.
The amount of water W used to rotate the water is saved.
【００１７】[0017]
【発明の効果】以上のように、本発明によれば、需要側
負荷の変動に対してダミー負荷に需要側負荷に反比例す
る出力電流を流すことにより、発電機の全負荷を常に一
定に保持させることができるばかりでなく、ダミー負荷
に流れる電流量を検出して、その検出値が電流量設定値
の所定範囲内に保たれるように水車の上流側の電動式入
口弁の開度を自動的に制御することによって、需要側負
荷が減少した際の水車に対する水の使用量を節減して、
水の無駄使いを抑制することができるという効果を奏す
る。As described above, according to the present invention, the output current that is in inverse proportion to the demand side load is supplied to the dummy load with respect to the fluctuation of the demand side load, so that the full load of the generator is always kept constant. Not only can it be performed, but the opening of the electric inlet valve on the upstream side of the turbine can be controlled so that the amount of current flowing through the dummy load is detected and the detected value is maintained within the specified range of the current amount setting value. By automatically controlling, the amount of water used for the turbine when the load on the demand side decreases will be saved,
This has an effect of suppressing waste of water.
【図１】本発明の一実施例による小水力発電設備の出力
調整装置を示すブロック構成図である。FIG. 1 is a block configuration diagram showing an output adjusting device of a small hydroelectric power generation facility according to an embodiment of the present invention.
１ 上水槽 ２ 水圧管 ３ 水車 ５ 電動式入口弁 ６ 発電機 ７ ダミー負荷 ８ 周波数検出器 １４ 電流量検出手段 １５ コントローラ Ｗ 水 1 Water Tank 2 Water Pressure Pipe 3 Water Turbine 5 Motorized Inlet Valve 6 Generator 7 Dummy Load 8 Frequency Detector 14 Current Amount Detection Means 15 Controller W Water
Claims (1)
転駆動される発電機に対するダミー負荷を設け、需要側
負荷の変動に応じて変化する発電機の発電周波数を検出
して、上記需要側負荷に反比例する出力電流を上記ダミ
ー負荷に流して発電機にかかる全負荷を一定に制御させ
るようにした小水力発電設備の出力調整装置であって、
上記ダミー負荷に流れる電流量を検出する電流量検出手
段と、この電流量検出手段による検出値が電流量設定値
の所定範囲内に保たれるように、上記水車の上流側に介
在させた電動式入口弁の開度を自動制御するコントロー
ラとを備えたことを特徴とする小水力発電設備の出力調
整装置。1. A dummy load is provided for a generator rotatably driven by a water turbine provided at the outlet of a penstock, and a generator frequency that changes according to fluctuations in the demand side is detected to detect the demand side. An output adjusting device for a small hydroelectric power generation facility, wherein an output current inversely proportional to a load is caused to flow through the dummy load to control the total load on the generator to be constant.
A current amount detecting means for detecting the amount of current flowing through the dummy load, and an electric motor interposed on the upstream side of the water turbine so that the value detected by the current amount detecting means is kept within a predetermined range of the current amount set value. An output adjusting device for a small hydroelectric power generation facility, comprising: a controller for automatically controlling the opening degree of a type inlet valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6012524A JP2884032B2 (en) | 1994-02-04 | 1994-02-04 | Output adjustment device for small hydro power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6012524A JP2884032B2 (en) | 1994-02-04 | 1994-02-04 | Output adjustment device for small hydro power plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07217526A true JPH07217526A (en) | 1995-08-15 |
| JP2884032B2 JP2884032B2 (en) | 1999-04-19 |
Family
ID=11807735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6012524A Expired - Fee Related JP2884032B2 (en) | 1994-02-04 | 1994-02-04 | Output adjustment device for small hydro power plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2884032B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871840A (en) * | 2010-07-12 | 2010-10-27 | 山东电力研究院 | Online test method for flow characteristics of turbine high-pressure governing valve |
| JP2016044609A (en) * | 2014-08-22 | 2016-04-04 | 株式会社羽野製作所 | Wind power generation control device and wind power generation control method |
| JP2018011415A (en) * | 2016-07-13 | 2018-01-18 | 三菱電機エンジニアリング株式会社 | Operation control device |
| CN110344989A (en) * | 2019-07-09 | 2019-10-18 | 武汉四创自动控制技术有限责任公司 | A kind of waterpower multicomputer generated output regulation method and apparatus |
| CN111321713A (en) * | 2019-06-19 | 2020-06-23 | 河南郑大水利科技有限公司 | Hydropower station unit operation method based on ecological flow |
-
1994
- 1994-02-04 JP JP6012524A patent/JP2884032B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871840A (en) * | 2010-07-12 | 2010-10-27 | 山东电力研究院 | Online test method for flow characteristics of turbine high-pressure governing valve |
| JP2016044609A (en) * | 2014-08-22 | 2016-04-04 | 株式会社羽野製作所 | Wind power generation control device and wind power generation control method |
| JP2018011415A (en) * | 2016-07-13 | 2018-01-18 | 三菱電機エンジニアリング株式会社 | Operation control device |
| CN111321713A (en) * | 2019-06-19 | 2020-06-23 | 河南郑大水利科技有限公司 | Hydropower station unit operation method based on ecological flow |
| CN111321713B (en) * | 2019-06-19 | 2021-05-11 | 河南郑大水利科技有限公司 | Hydropower station unit operation method based on ecological flow |
| CN110344989A (en) * | 2019-07-09 | 2019-10-18 | 武汉四创自动控制技术有限责任公司 | A kind of waterpower multicomputer generated output regulation method and apparatus |
| CN110344989B (en) * | 2019-07-09 | 2020-12-15 | 武汉四创自动控制技术有限责任公司 | Method and device for regulating and controlling power generated by multiple hydraulic units |
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| JP2884032B2 (en) | 1999-04-19 |
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