JPS57718A - Automatic controlling method for constant water level - Google Patents
Automatic controlling method for constant water levelInfo
- Publication number
- JPS57718A JPS57718A JP7393880A JP7393880A JPS57718A JP S57718 A JPS57718 A JP S57718A JP 7393880 A JP7393880 A JP 7393880A JP 7393880 A JP7393880 A JP 7393880A JP S57718 A JPS57718 A JP S57718A
- Authority
- JP
- Japan
- Prior art keywords
- water level
- limit
- dead zone
- fluctuations
- control
- 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
Landscapes
- Control Of Non-Electrical Variables (AREA)
- Barrages (AREA)
Abstract
PURPOSE: To stabilize control when the water level of a dam, etc., fluctuates suddenly, by generating a control command for a gate while considering the rate of fluctuations of the water level by providing ≥2 ded zones for automatic control over the water level.
CONSTITUTION: As for fluctuations of a water level according to time , a reference water level held normally, and upper-limit set water level 11 for discharge when the water level exceeds the reference water level 10, and a low-limit set water level 12 for stopping the discharge when the water level decreases below the reference water level 10 are set. Between those upper-limit and lower-limit water levels 11 and 12, a dead zone (alowable width) 13 is set and in the dead zone 13, a water level dead zone 20 is provided to control the fluctuating water level 14. Then, when the water level 14 is above the upper limit of the dead zone 20 and below the upper-limit water level 11, an opening command time zone 21 is applied to a gate, etc., for the control as far as the rate of fluctuation of the water level is positive. Similarly, when the water level is below the lower limit of the dead zone 20 and above the lower-limit water level 12, the gate is controlled with a closure command time zone 22 only while the rate of fluctuations o the water level is negative, thus exercising stable control over sudden fluctuations of the water level.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7393880A JPS57718A (en) | 1980-05-30 | 1980-05-30 | Automatic controlling method for constant water level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7393880A JPS57718A (en) | 1980-05-30 | 1980-05-30 | Automatic controlling method for constant water level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57718A true JPS57718A (en) | 1982-01-05 |
Family
ID=13532551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7393880A Pending JPS57718A (en) | 1980-05-30 | 1980-05-30 | Automatic controlling method for constant water level |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57718A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02249012A (en) * | 1989-03-22 | 1990-10-04 | Toshiba Eng Co Ltd | Controller for keeping water level of hydroelectric power plant constant |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5088832A (en) * | 1973-12-12 | 1975-07-16 | ||
| JPS5137395A (en) * | 1974-09-27 | 1976-03-29 | Hitachi Ltd | SUIISEIGYO HOSHIKI |
-
1980
- 1980-05-30 JP JP7393880A patent/JPS57718A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5088832A (en) * | 1973-12-12 | 1975-07-16 | ||
| JPS5137395A (en) * | 1974-09-27 | 1976-03-29 | Hitachi Ltd | SUIISEIGYO HOSHIKI |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02249012A (en) * | 1989-03-22 | 1990-10-04 | Toshiba Eng Co Ltd | Controller for keeping water level of hydroelectric power plant constant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS57718A (en) | Automatic controlling method for constant water level | |
| JPS53102405A (en) | Speed governing of steam turbine | |
| JPS5246203A (en) | Method of controlling feed-water pumps for power genration plant | |
| JPS5564896A (en) | Automatic control method for oxidation-reduction potential in aerobic active sludge treatment | |
| ES8507284A1 (en) | Primary circuit pressure-control method during the shut-down period of a pressurised water nuclear reactor. | |
| JPS5233118A (en) | Flow regulator with water level corrective device | |
| JPS53123374A (en) | Controlling method for concentrating still | |
| JPS5666567A (en) | Flow rate control valve | |
| JPS5577398A (en) | Controller for output of electricity generator | |
| JPS5759498A (en) | Controlling method for automatic operation of hydraulic power plant | |
| JPS5685011A (en) | Controlling method for flow rate of river water | |
| JPS57148594A (en) | Automatic operation control system for hydraulic power plant | |
| JPS6435052A (en) | Engine controller | |
| JPS56116118A (en) | Water level controller | |
| JPS5520591A (en) | Self-actuation type regulator for reducing valve | |
| JPS5322978A (en) | Hyster esis type constant water level flow quantity control method | |
| JPS5638998A (en) | Controller for water wheel | |
| JPS56106073A (en) | Water level regulator | |
| JPS52104358A (en) | Method for controlling activated sludge | |
| JPS5344793A (en) | Water feeding control device for reactor | |
| JPS54108001A (en) | Pump controlling method | |
| JPS5457621A (en) | Pumping-up stopper for pumping-up power station | |
| JPS5360476A (en) | Valve controlling system in recycling flow generator | |
| JPS5779289A (en) | Negative suction pressure control device of dredge pump | |
| JPS5786911A (en) | Method and device for controlling water level of feed water heater |