JPH08159006A - Head tank water level regulation control device for hydraulic power plant in snowy area - Google Patents
Head tank water level regulation control device for hydraulic power plant in snowy areaInfo
- Publication number
- JPH08159006A JPH08159006A JP6304796A JP30479694A JPH08159006A JP H08159006 A JPH08159006 A JP H08159006A JP 6304796 A JP6304796 A JP 6304796A JP 30479694 A JP30479694 A JP 30479694A JP H08159006 A JPH08159006 A JP H08159006A
- Authority
- JP
- Japan
- Prior art keywords
- water
- water level
- water tank
- adjustment control
- level adjustment
- 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、降雪地帯に設置される
流れ込み式水力発電所内の上水槽水位調整制御装置の改
良に関し、特に、上水槽内に流木や落葉等の異物をせき
止めるためのスクリーンを設け、このスクリーンにより
上水槽内に流れ込んだスノージャムをせき止めてスノー
ジャムの流入を検出し、安定な上水槽の水位調整制御が
行えるようにした降雪地の水力発電所の上水槽水位調整
制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a water level adjusting control device for a water tank in a run-of-river type hydroelectric power plant installed in a snowfall area, and more particularly to a screen for stopping foreign matter such as driftwood and fallen leaves in the water tank. This screen is provided to prevent snow jam from flowing into the water tank and detect the inflow of snow jam, enabling stable water tank water level adjustment control. Regarding the device.
【０００２】[0002]
【従来の技術】現在運転されている流れ込み式水力発電
所内の上水槽の水位検出は、主として上水槽内の水中に
設けた圧力センサーにより検出し、送信された圧力信号
を水位に変換することにより得ている。また、この上水
槽内には、流入した流木や落葉等の異物をせき止めるた
めに、櫛の歯状のスクリーンと呼ばれる枠が設けられ、
さらに、せき止められた流木や落葉等を除去するための
除塵機が設置されている場合もある。2. Description of the Related Art The water level of a water tank in a run-of-river type hydroelectric power plant currently in operation is detected mainly by a pressure sensor provided in the water in the water tank, and the transmitted pressure signal is converted into a water level. It has gained. In addition, in this water tank, a frame called a comb-teeth-shaped screen is provided to prevent foreign matter such as driftwood and fallen leaves from coming in.
In addition, a dust remover may be installed to remove the blocked driftwood and fallen leaves.
【０００３】図３は流れ込み式水力発電所内の上水槽の
概念図である。図３において、１は上水槽、２は、図示
しないダム或いは上水池よりこの上水槽１内に流水を導
入するための導水路、３は、この導水路２より上水槽１
内に導入されて蓄えられた貯水、４は、この貯水３を図
示しない発電機を回転駆動する水車に送水するための水
圧管路である。FIG. 3 is a conceptual diagram of a water tank in a run-of-river type hydroelectric power plant. In FIG. 3, 1 is a water tank, 2 is a water conduit for introducing flowing water into the water tank 1 from a dam or a water reservoir (not shown), and 3 is a water tank 1 from the water conduit 2.
The stored water 4 introduced and stored therein is a hydraulic conduit for sending the stored water 3 to a water turbine that rotationally drives a generator (not shown).
【０００４】５は、上記の上水槽１の内部を上流側と下
流側とに区分して上水槽内に流入する流木や落葉等の異
物の下流側への流入を阻止するための上記櫛の歯状のス
クリーン、６は、上水槽１の貯水３の水位を検出するた
めに、上水槽１の底部に設けた圧力センサーで、貯水３
の圧力を検出して圧力信号を出力する。７は、上水槽１
内に蓄えられた貯水３が略々満水になった時に貯水３を
放流するために、上水槽１の上流側の側壁頂部に開口す
る放水路である。Reference numeral 5 denotes a comb for dividing the inside of the water tank 1 into an upstream side and a downstream side to prevent foreign matters such as driftwood and fallen leaves flowing into the water tank from flowing into the downstream side. The tooth-shaped screen 6 is a pressure sensor provided at the bottom of the water tank 1 for detecting the water level of the water storage 3 in the water tank 1.
The pressure is detected and a pressure signal is output. 7 is the water tank 1
This is a water discharge channel that opens at the top of the upstream side wall of the water tank 1 in order to discharge the stored water 3 when the stored water 3 stored therein is almost full.
【０００５】上記のように、櫛の歯状スクリーン５を備
えた上水槽１内の貯水３の水面は、冬季における降雪に
より、また流れ込んでくるスノージャムにより、その全
面が覆われるようになり、上水槽１内の実際の貯水３の
量は増加していないにも拘らず、水面を覆ったスノージ
ャムの分量だけ貯水３の水位は上昇したものとして検出
される。そのため、圧力センサー６からは上昇した水位
に応ずる圧力信号が送信されてくる。As described above, the water surface of the stored water 3 in the upper water tank 1 provided with the comb-teeth-shaped screen 5 is entirely covered by the snowfall in winter and the flowing snow jam, Although the actual amount of the stored water 3 in the water tank 1 has not increased, it is detected that the water level of the stored water 3 has risen by the amount of the snow jam covering the water surface. Therefore, the pressure sensor 6 sends a pressure signal corresponding to the increased water level.
【０００６】ところで、流れ込み式水力発電所において
は、図示しない上水槽水位調整制御装置により水車制御
（発電機の出力制御）を行う際に、通常、上水槽１内の
貯水３の水位を略々一定に保持する水位調整制御を行っ
ている。By the way, in a run-of-river type hydroelectric power station, when the water turbine control (output control of the generator) is carried out by a water tank water level adjusting control device (not shown), the water level of the stored water 3 in the water tank 1 is generally almost The water level is controlled to be kept constant.
【０００７】しかしながら、上記のように上水槽１内の
貯水３の上昇した水位信号を受信すると、上記の上水槽
水位調整制御装置は、上水槽１内の貯水３の水位を下げ
るように作動して、貯水３を上水槽１から水圧管路４を
介して図示しない水車に送る流水の流量を増加する制御
を行ってしまう。そして流量を増加したことにより、上
水槽１内の貯水３の水位は急激に下降するから、上水槽
１内の貯水３の下降した水位信号を受信することにな
る。However, when the raised water level signal of the stored water 3 in the upper water tank 1 is received, the upper water tank water level adjustment control device operates so as to lower the water level of the stored water 3 in the upper water tank 1. As a result, control is performed to increase the flow rate of the flowing water from the upper water tank 1 to the water turbine (not shown) via the water pressure pipe 4. Then, as the flow rate is increased, the water level of the stored water 3 in the upper water tank 1 drops sharply, so that the lowered water level signal of the stored water 3 in the upper water tank 1 is received.
【０００８】そうすると、次には、上水槽１内の貯水３
の水位を上昇させるために、水車に送る流水の流量を減
少する制御を行うことになり、このようにして水車への
送水流量の増加および減少を繰返すことになる。[0008] Then, next, the water storage 3 in the water tank 1
In order to raise the water level of the water wheel, control is performed to reduce the flow rate of the flowing water to the water wheel, and thus the increase and decrease of the water flow rate to the water wheel are repeated.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、上記の
ように、上水槽１内へのスノージャムの流入に起因する
圧力（水位）センサー６の誤判断により、水車への送水
流量の増加・減少を繰返すことは、上水槽水位調整制御
装置が激しい上水槽１の水位調整制御を繰返すことであ
り、上水槽１内の貯水３の水位、発電機の出力電力が不
安定になってしまうという問題がある。However, as described above, an increase / decrease in the flow rate of water to be supplied to the water turbine is caused by an erroneous judgment of the pressure (water level) sensor 6 caused by the inflow of snow jam into the clean water tank 1. Repeating this means that the water tank water level adjusting control device repeats intense water level adjusting control of the water tank 1, and the water level of the stored water 3 in the water tank 1 and the output power of the generator become unstable. is there.
【００１０】本発明は上記の事情に鑑みてなされたもの
であり、その目的は、上水槽内へのスノージャムの流入
が発生しても、上水槽の安定した水位調整制御を行うこ
とができるようにした降雪地の水力発電所の上水槽水位
調整制御装置を提供することにある。The present invention has been made in view of the above circumstances, and an object thereof is to perform stable water level adjustment control of the water tank even if a snow jam flows into the water tank. An object of the present invention is to provide a water tank water level adjustment control device for a hydroelectric power plant in a snowy area.
【００１１】[0011]
【課題を解決するための手段】上記の目的を達成するた
めに本発明は、降雪地帯に設置され上水槽の水位調整制
御を行う水位調整制御装置を備えた水力発電所におい
て、前記上水槽内に設けられ、この上水槽の内部を上流
側と下流側とに区分して上水槽内に流入する異物の下流
側への流入を阻止するスクリーンと、前記上水槽の上流
側の側壁頂部に開口し、上水槽内の貯水が略々満水に近
づくと貯水が自動的に溢水する放水路と、前記上水槽の
上流側の水中に設けられ、上水槽内の上流側の貯水の水
位を検出し、検出した水位に応ずる圧力信号を出力する
第１の圧力センサーと、前記上水槽の下流側の水中で前
記第１の圧力センサーと同一水準位置に設けられ、上水
槽内の下流側の貯水の水位を検出し、検出した水位に応
ずる圧力信号を出力する第２の圧力センサーと、前記水
力発電所の外気温度を検出するために設けられ、検出し
た外気温度信号を出力する温度センサーと、前記水位調
整制御装置に付加され月単位で現時点を出力するカレン
ダーと、から成り、前記水位調整制御装置により水位調
整制御を実施している時、前記第１の圧力センサーが検
出した圧力信号と前記第２の圧力センサーが検出した圧
力信号との圧力信号差が、前記貯水の予定の水位差に応
ずる値より大となり、且つ前記温度センサーにより検出
した外気温度信号が予定の温度以下であり、前記カレン
ダーが出力する現時点が、降雪が予想される冬季から春
季にかけての月である場合には、前記水位調整制御を除
外し、前記圧力信号差が前記貯水の予定の水位差に応ず
る値より小となると、再度水位調整制御に移行すること
を特徴とする。In order to achieve the above object, the present invention is directed to a hydroelectric power plant equipped with a water level adjusting control device installed in a snowy area for performing water level adjusting control of the water tank. A screen for dividing the inside of the water tank into an upstream side and a downstream side to prevent foreign substances flowing into the water tank from flowing into the downstream side; and an opening at the top of the upstream side wall of the water tank. However, it is provided in a water discharge channel where the stored water automatically overflows when the stored water in the water tank approaches nearly full and in the water on the upstream side of the water tank, and the water level of the stored water on the upstream side in the water tank is detected. , A first pressure sensor that outputs a pressure signal corresponding to the detected water level, and a first side pressure sensor that is provided at the same level position as the first pressure sensor in the water on the downstream side of the water tank, Detects the water level and outputs a pressure signal according to the detected water level A second pressure sensor, a temperature sensor provided to detect the outside air temperature of the hydroelectric power station, and which outputs the detected outside air temperature signal, and is added to the water level adjustment control device to output the present time on a monthly basis. A calender and a pressure signal difference between the pressure signal detected by the first pressure sensor and the pressure signal detected by the second pressure sensor when performing the water level adjustment control by the water level adjustment control device. Is larger than the value corresponding to the planned water level difference of the stored water, and the outside air temperature signal detected by the temperature sensor is equal to or lower than the planned temperature, and the present time output by the calendar is from winter to spring when snow is expected. In the case of a month until, the water level adjustment control is excluded, and when the pressure signal difference becomes smaller than the value corresponding to the planned water level difference of the stored water, the water level adjustment system is again performed. Wherein the process proceeds to.
【００１２】[0012]
【作用】上水槽内を異物が通過することを阻止するスク
リーンにより、上流側と下流側とに区分し、上流側と下
流側とにそれぞれ水位を検出する圧力センサーを設け、
さらに、外気温度を測定する温度センサーと、降雪時期
を予測するために現時点を月単位で出力するカレンダー
とを設け、圧力センサーにより検出した水槽の上流側と
下流側との水位差が予定値以上になり、また、温度セン
サーにより測定した外気温度と、カレンダーの示す月と
が降雪時期に当たる時には、水槽の上流側と下流側との
水位差はスノージャムによるものと判断して、水位調整
制御を除外し、水位差が予定値以下になると、再度水位
調整制御に移行するようにしたから、上水槽の安定した
水位調整制御を行うことが可能となる。[Function] A screen that prevents foreign matter from passing through the water tank is divided into an upstream side and a downstream side, and pressure sensors are provided on the upstream side and the downstream side to detect the water level,
Furthermore, a temperature sensor that measures the outside air temperature and a calendar that outputs the current time in months to predict the snowfall time are provided, and the water level difference between the upstream side and the downstream side of the water tank detected by the pressure sensor is above the planned value. In addition, when the outside air temperature measured by the temperature sensor and the month indicated by the calendar hit the snowfall season, the water level difference between the upstream side and the downstream side of the water tank was judged to be due to snow jam, and the water level adjustment control was performed. It is excluded, and when the water level difference becomes equal to or less than the planned value, the water level adjustment control is performed again, so that stable water level adjustment control of the water tank can be performed.
【００１３】[0013]
【実施例】以下、図面を参照して本発明を説明する。図
１は、本発明が適用される流れ込み式水力発電所内の上
水槽の一実施例を示す概念図であり、図３と同一部分に
は同一符号を付したので、それらの詳細な説明は省略す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a conceptual diagram showing an embodiment of a water tank in a run-of-river type hydroelectric power plant to which the present invention is applied. Since the same parts as those in FIG. 3 are designated by the same reference numerals, detailed description thereof is omitted. To do.
【００１４】図１において、１は上水槽、２は導水路、
３は貯水、４は水圧管路である。５は、上水槽の内部を
上流側と下流側とに区分するスクリーンである。In FIG. 1, 1 is a water tank, 2 is a water conduit,
Reference numeral 3 is water storage, and 4 is a penstock. 5 is a screen that divides the inside of the water tank into an upstream side and a downstream side.
【００１５】６ａは、上水槽１内の上流側に設けた第１
の圧力センサー、６ｂは、上水槽１内の下流側において
上記第１の圧力センサー６ａと同一水準位置に設けた第
２の圧力センサーである。７は、上水槽１の上流側のス
クリーン５の近傍の側壁頂部に開口する放水路である。
８は、上水槽１内に流入しスクリーン５によりその上流
側にせき止められたスノージャムであり、９は、本発明
用として設けた水力発電所の外気温度を測定するための
温度センサーである。The reference numeral 6a designates a first upstream side of the water tank 1.
The pressure sensor 6b is a second pressure sensor provided at the same level position as the first pressure sensor 6a on the downstream side in the upper water tank 1. Reference numeral 7 denotes a water discharge channel that opens at the top of the side wall near the screen 5 on the upstream side of the upper water tank 1.
Reference numeral 8 is a snow jam that flows into the water tank 1 and is dammed upstream by the screen 5 and 9 is a temperature sensor for measuring the outside air temperature of the hydroelectric power station provided for the present invention.
【００１６】なお、図示はしないが、本発明用として上
水槽水位調整制御装置のシーケンサーに「月を単位」と
して現時点を出力するカレンダーを追加する。Although not shown, a calendar for outputting the present time in units of "month" is added to the sequencer of the water tank water level adjustment control device for the present invention.
【００１７】図２は、本発明の上水槽水位調整制御装置
による上水槽水位調整制御の一実施例を示す制御フロー
図である。FIG. 2 is a control flow chart showing an embodiment of the water level adjustment control of the water tank by the water level adjustment control device of the present invention.
【００１８】先ず、図１を参照して本発明の作動の概要
を説明し、次に図２を参照して作動を詳細に説明する。First, the outline of the operation of the present invention will be described with reference to FIG. 1, and then the operation will be described in detail with reference to FIG.
【００１９】冬季の降雪によるスノージャム８が導水路
２より上水槽１内に流れ込んできても、スノージャム８
はスクリーン５によって上水槽１の上流側にせき止めら
れてしまう。スノージャム８がスクリーン５によって上
水槽１の上流側にせき止められたことにより、上水槽１
内の上流側と下流側とでは貯水３に水位差が生じ、その
結果、上水槽１内の上流側に設けた第１の圧力センサー
６ａと、下流側に設けた第２の圧力センサー６ｂとから
は、それぞれ異なる水位検出データが、図示しない上水
槽水位調整制御装置に取り込まれる。Even if the snow jam 8 caused by snowfall in winter flows into the water tank 1 from the headrace 2, the snow jam 8
Is blocked by the screen 5 upstream of the water tank 1. Since the snow jam 8 is dammed upstream of the water tank 1 by the screen 5,
There is a difference in water level between the upstream side and the downstream side of the stored water 3, and as a result, a first pressure sensor 6a provided upstream in the water tank 1 and a second pressure sensor 6b provided downstream. From the above, different water level detection data are fetched into the upper water tank water level adjustment control device (not shown).
【００２０】このことにより、上水槽１内にスノージャ
ム８が流入してきたものとの予測はできるが、上水槽１
内には、他に、流木や落葉等の異物も流れ込んでくるた
め、スノージャム８の流入とは断定できない。From this, it can be predicted that the snow jam 8 has flowed into the water tank 1, but the water tank 1
In addition, since foreign matter such as driftwood and fallen leaves also flow into the inside, it cannot be concluded that the snow jam 8 has flowed in.
【００２１】そこで、本発明用として設置した温度セン
サー９からは、水力発電所の外気温度を、さらに上水槽
水位調整制御装置に追加したカレンダーからは、「現在
の月」を取り込み、降雪によるスノージャムが流れ込ん
でくる時期であるか否かを判断する。Therefore, the temperature sensor 9 installed for the present invention takes in the outside air temperature of the hydroelectric power plant, and the calendar added to the water tank water level adjustment control device takes in the "current month", and the snow caused by snowfall is taken in. Determine if it's time for the jam to come in.
【００２２】そして、これらの全ての条件が満足された
ときのみ、上水槽１内にスノージャム８が流入してきた
ものと断定する。スノージャム８が流れ込んでくる時期
は、冬季から春季（例えば１２月から翌年の４月）にか
けてであるが、地域により多少は時期が異なるため、上
記の条件の設定には調整を必要とする。Only when all of these conditions are satisfied, it is concluded that the snow jam 8 has flowed into the clean water tank 1. The snow jam 8 flows in from winter to spring (for example, from December to April of the following year), but since the time varies slightly depending on the region, adjustment is required to set the above conditions.
【００２３】このようにして、上水槽１内へのスノージ
ャム８の流入が確認でき、且つ上記第１の圧力センサー
６ａが検出した圧力信号と、上記第２の圧力センサー６
ｂが検出した圧力信号との圧力信号差が、前記貯水３の
予め定められた水位差に応ずる値より大となると、上水
槽水位調整制御装置による上水槽水位調整制御は除外さ
れる。In this way, the inflow of the snow jam 8 into the clean water tank 1 can be confirmed, and the pressure signal detected by the first pressure sensor 6a and the second pressure sensor 6 are detected.
When the pressure signal difference from the pressure signal detected by b becomes larger than the value corresponding to the predetermined water level difference of the stored water 3, the water control tank water level adjustment control by the water control tank water level adjustment control device is excluded.
【００２４】上水槽水位調整制御の除外により、上水槽
１内の貯水３の水位は上昇に転じ、やがて、上水槽１の
上流側の貯水３の水面に浮いたスノージャム８は、上水
槽１の上流側の側壁頂部に開口する放水路７より溢れ出
て流出するようになり、スノージャム８は除去される。The water level of the water storage 3 in the water tank 1 starts to rise due to the exclusion of the water tank water level adjustment control. Eventually, the snow jam 8 floating on the water surface of the water storage 3 upstream of the water tank 1 becomes the water tank 1. The snow jam 8 is removed from the water discharge channel 7 that opens at the top of the side wall on the upstream side, and the snow jam 8 is removed.
【００２５】スノージャム８が除去されると、第１の圧
力センサー６ａと、第２の圧力センサー６ｂとにより検
出されるそれぞれの水位検出データの間の差は、上記の
予定の水位差より小さくなるので、スノージャム８は除
去されたものと判断し、再度上水槽水位調整制御に移行
する。When the snow jam 8 is removed, the difference between the respective water level detection data detected by the first pressure sensor 6a and the second pressure sensor 6b is smaller than the predetermined water level difference described above. Therefore, it is determined that the snow jam 8 has been removed, and the process moves to the water level adjustment control of the clean water tank again.
【００２６】以上、作動の概要を説明したので、次に、
図２に示す本発明の上水槽水位調整制御の一実施例であ
る制御フロー図を参照して本発明の作動を詳細に説明す
る。なお、図中のＳ１、Ｓ２、……は、それぞれ、ステ
ップ１、ステップ２、……を示す。The outline of the operation has been described above. Next,
The operation of the present invention will be described in detail with reference to the control flow chart which is one embodiment of the upper water tank water level adjustment control of the present invention shown in FIG. In the figure, S1, S2, ... Represent step 1, step 2 ,.
【００２７】Ｓ１： “制御”を開始する。S1: Start "control".
【００２８】Ｓ２： 第１の圧力センサー６ａにより検
出された水位検出データ“ｌａ”を入力する。S2: Input the water level detection data "la" detected by the first pressure sensor 6a.
【００２９】Ｓ３： 第２の圧力センサー６ｂにより検
出された水位検出データ“ｌｂ”を入力する。S3: Input the water level detection data "lb" detected by the second pressure sensor 6b.
【００３０】Ｓ４： 水位検出データ“ｌａ”と水位検
出データ“ｌｂ”との“差”を求める。S4: The "difference" between the water level detection data "la" and the water level detection data "lb" is obtained.
【００３１】Ｓ５： Ｓ４で求めた両水位検出データの
“差”が“予定の範囲内”でない場合には、 Ｓ６： 温度センサー９により検出された外気温度
“ｔ”を入力する。S5: When the "difference" between the two water level detection data obtained in S4 is not "within a predetermined range", S6: The outside air temperature "t" detected by the temperature sensor 9 is input.
【００３２】Ｓ７： Ｓ６で検出した外気温度“ｔ”が
１０度以下の場合には、 Ｓ８： カレンダの出力する“現時点の月”を取り込
む。S7: When the outside air temperature "t" detected in S6 is 10 degrees or less, S8: The "current month" output from the calendar is fetched.
【００３３】Ｓ９： Ｓ８で取り込んだ“現時点の月”
が“１２月から４月”の場合には、 Ｓ１０： “上水槽の水位調整制御”を除外する。S9: "current month" captured in S8
If is from “December to April”, S10: “Water level adjustment control of water tank” is excluded.
【００３４】Ｓ１６： “制御”を終了し、Ｓ１に戻
り、“制御”を開始する。S16: The "control" is ended, the process returns to S1, and the "control" is started.
【００３５】Ｓ５において、Ｓ４で求めた両水位検出デ
ータの“差”が“予定の範囲内”の場合、またはＳ７に
おいて、外気温度“ｔ”が１０度以下でない場合、また
はＳ９において、“現時点の月”が“１２月から４月”
でない場合、のいずれかの場合には、 Ｓ１１： “水位調整制御”が“除外中”である場合に
は、 Ｓ１２： “水位調整制御”を“使用中”に切り換え
て、Ｓ１３に移行する。 Ｓ１１： “水位調整制御”が“除外中”でなく、 Ｓ１３： Ｓ４で求めた両水位検出データの“差”が
“大きめ”の場合には、 Ｓ１４： 水圧管路４からの“水車への放出流量”を
“大”にする。In S5, if the "difference" between the two water level detection data obtained in S4 is "within the predetermined range", or in S7, the outside air temperature "t" is not less than 10 degrees, or in S9, "current time". Month is "December to April"
If not, S11: If "water level adjustment control" is "excluding", S12: "Water level adjustment control" is switched to "in use", and the process proceeds to S13. S11: “Water level adjustment control” is not “excluding”, S13: If the “difference” between the two water level detection data obtained in S4 is “large”, S14: “From the hydraulic line 4 to the turbine” Increase the discharge flow rate to "large".
【００３６】Ｓ１６： “制御”を終了し、Ｓ１に戻
り、“制御”を開始する。S16: The "control" is ended, the process returns to S1, and the "control" is started.
【００３７】Ｓ１１： “水位調整制御”が“除外中”
でなく、 Ｓ１３： Ｓ４で求めた両水位検出データの“差”が
“大きめ”でない場合には、 Ｓ１５： 水圧管路４からの“水車への放出流量”を
“小”にする。S11: "Water level control" is "excluding"
S13: If the “difference” between the two water level detection data obtained in S4 is not “large”, S15: “Discharge flow rate to hydraulic turbine” from the hydraulic conduit 4 is set to “small”.
【００３８】Ｓ１６： “制御”を終了し、Ｓ１に戻
り、“制御”を開始する。S16: The "control" is ended, the process returns to S1, and the "control" is started.
【００３９】[0039]
【発明の効果】以上、本発明について詳細に説明した
が、本発明によれば、上水槽の上流側と下流側との水位
差が予定値以上となり、時期が降雪期に当たる時には、
上水槽にスノージャムが流入したものと判断して、水位
調整制御を除外し、スノージャムを放流して水位差が予
定値以下になると、再度水位調整制御に移行するように
したから、上水槽の安定した水位調整制御を行うことの
できる降雪地の水力発電所の上水槽水位調整制御装置を
提供することができ、これにより、発電機が略々一定し
た電力を供給することに良い影響を与える利点が得られ
る。As described above, the present invention has been described in detail. According to the present invention, when the water level difference between the upstream side and the downstream side of the tap water tank is equal to or larger than the predetermined value and the time is in the snow season,
It was judged that the snow jam had flowed into the water tank, and the water level adjustment control was excluded.When the snow jam was discharged and the water level difference fell below the planned value, the water level adjustment control was started again. It is possible to provide a water tank water level adjustment control device for a hydroelectric power plant in a snowy area that can perform stable water level adjustment control of the above, and this has a good effect on the generator supplying a substantially constant power. You get the benefits you give.
【図１】本発明が適用される流れ込み式水力発電所内の
上水槽の一実施例を示す概念図である。FIG. 1 is a conceptual diagram showing an example of a water tank in a flow-in type hydroelectric power plant to which the present invention is applied.
【図２】本発明の上水槽水位調整制御方法の一実施例を
示す制御フロー図である。FIG. 2 is a control flow chart showing an embodiment of a method for controlling water level adjustment in a water tank of the present invention.
【図３】流れ込み式水力発電所内の上水槽の概念図であ
る。FIG. 3 is a conceptual diagram of a water tank in a run-of-river type hydroelectric power plant.
１ 上水槽 ２ 導水路 ３ 貯水 ４ 水圧管路 ５ スクリーン ６ａ 第１の圧力センサー ６ｂ 第２の圧力センサー ７ 放水路 ８ スノージャム ９ 温度センサー 1 Water Tank 2 Water Conduit 3 Water Storage 4 Water Pressure Pipe 5 Screen 6a 1st Pressure Sensor 6b 2nd Pressure Sensor 7 Water Discharge Channel 8 Snow Jam 9 Temperature Sensor
Claims (1)
御を行う水位調整制御装置を備えた水力発電所におい
て、前記上水槽内に設けられ、この上水槽の内部を上流
側と下流側とに区分して上水槽内に流入する異物の下流
側への流入を阻止するスクリーンと、前記上水槽の上流
側の側壁頂部に開口し、上水槽内の貯水が略々満水に近
づくと貯水が自動的に溢水する放水路と、前記上水槽の
上流側の水中に設けられ、上水槽内の上流側の貯水の水
位を検出し、検出した水位に応ずる圧力信号を出力する
第１の圧力センサーと、前記上水槽の下流側の水中で前
記第１の圧力センサーと同一水準位置に設けられ、上水
槽内の下流側の貯水の水位を検出し、検出した水位に応
ずる圧力信号を出力する第２の圧力センサーと、前記水
力発電所の外気温度を検出するために設けられ、検出し
た外気温度信号を出力する温度センサーと、前記水位調
整制御装置に付加され月単位で現時点を出力するカレン
ダーと、から成り、前記水位調整制御装置により水位調
整制御を実施している時、前記第１の圧力センサーが検
出した圧力信号と前記第２の圧力センサーが検出した圧
力信号との圧力信号差が、前記貯水の予定の水位差に応
ずる値より大となり、且つ前記温度センサーにより検出
した外気温度信号が予定の温度以下であり、前記カレン
ダーが出力する現時点が、降雪が予想される冬季から春
季にかけての月である場合には、前記水位調整制御を除
外し、前記圧力信号差が前記貯水の予定の水位差に応ず
る値より小となると、再度水位調整制御に移行すること
を特徴とする、降雪地の水力発電所の上水槽水位調整制
御装置。1. In a hydroelectric power plant equipped with a water level adjustment control device installed in a snowfall area for performing water level adjustment control of a water tank, the inside of the water tank is provided with an upstream side and a downstream side. A screen that blocks the inflow of foreign substances that flow into the water tank into the downstream side, and an opening at the top of the upstream side wall of the water tank, and when the water in the water tank approaches near full water A water discharge channel that automatically overflows, and a first pressure sensor that is provided in the water upstream of the above water tank, detects the water level of the upstream storage water in the above water tank, and outputs a pressure signal corresponding to the detected water level. And a water pressure sensor which is provided at the same level position as the first pressure sensor in the water on the downstream side of the water tank, detects the water level of the stored water on the downstream side in the water tank, and outputs a pressure signal corresponding to the detected water level. 2 pressure sensor and the outside temperature of the hydropower station A temperature sensor that is provided for detecting and outputs a detected outside air temperature signal, and a calendar that is added to the water level adjustment control device and outputs the current time on a monthly basis, and controls the water level adjustment by the water level adjustment control device. During execution, the pressure signal difference between the pressure signal detected by the first pressure sensor and the pressure signal detected by the second pressure sensor becomes larger than a value corresponding to the planned water level difference of the stored water, And when the outside air temperature signal detected by the temperature sensor is lower than a predetermined temperature, and the current time when the calendar outputs is a month from winter to spring when snowfall is expected, the water level adjustment control is excluded. When the pressure signal difference becomes smaller than a value corresponding to the planned water level difference of the stored water, the water level adjustment control is performed again. Bath water level adjustment control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6304796A JPH08159006A (en) | 1994-12-08 | 1994-12-08 | Head tank water level regulation control device for hydraulic power plant in snowy area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6304796A JPH08159006A (en) | 1994-12-08 | 1994-12-08 | Head tank water level regulation control device for hydraulic power plant in snowy area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08159006A true JPH08159006A (en) | 1996-06-18 |
Family
ID=17937347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6304796A Pending JPH08159006A (en) | 1994-12-08 | 1994-12-08 | Head tank water level regulation control device for hydraulic power plant in snowy area |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08159006A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010115021A (en) * | 2008-11-06 | 2010-05-20 | Chugoku Electric Power Co Inc:The | Power generation output adjustment method and power generation power control unit |
| CN112283005A (en) * | 2020-10-26 | 2021-01-29 | 武汉欧立德电气有限公司 | Intelligent optimized power generation system with monitoring function for medium and small power stations |
-
1994
- 1994-12-08 JP JP6304796A patent/JPH08159006A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010115021A (en) * | 2008-11-06 | 2010-05-20 | Chugoku Electric Power Co Inc:The | Power generation output adjustment method and power generation power control unit |
| CN112283005A (en) * | 2020-10-26 | 2021-01-29 | 武汉欧立德电气有限公司 | Intelligent optimized power generation system with monitoring function for medium and small power stations |
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