River management products Water intake automatic control device
Densei Comtech Co., Ltd.
About This Product
This is a device installed at dams and intake weirs to automatically adjust the amount of water required for power generation. Automatically controls water intake gates to adjust water level and flow rate based on readings from local or remote locations.
■Product features
・Automatic control is performed to follow the indicated value using methods such as target opening control and adjustment band control based on the measured water level and flow rate.
- After the indicated value is reached, hunting that occurs after the actual water level or flow rate reaches the indicated value can be minimized by pullback control or fine adjustment control.
・It is possible to incorporate various control conditions depending on the operation of the dam or intake weir.
・Basic information such as water level, opening, gate failure status, etc. and manual operation sequences are configured using hardware circuits, while other detailed data such as history information and progress graphs related to automatic control are collected on PLC and touch panels. Designed with excellent reliability, maintainability, and operability.
- Since the transmission device for remote locations can be installed inside the panel, it is possible to support remote control with only one side of this device.
- Various interfaces can be implemented to link with the dam management system and various related systems.
- It is also possible to create a network configuration in which display terminals or server devices are installed at a control center or general management center. Since it is possible to remotely change constants and conditions related to on-site automatic control and to monitor the operational status of equipment in detail and in real time, it is possible to accurately make initial responses during operations and make accurate decisions about dispatching to the site. It is also expected to enable various verifications using past historical information and the effective use of data in other operations.
■Applicable location
Hydroelectric dams and intake weirs
specification
■Main applicable standards
・Electricity standards
・Japanese Industrial Standards (JIS)
・IEEJ Electrical Standards Committee Standards (JEC)
・Japan Electrical Manufacturers Association Standards (JEM)
・Electronic Machinery Industries Association Standards (EIAJ)
・IEEJ Cyclic/Digital Information Transmission Equipment Usage Standards
・Electricity Cooperative Research Vol. 25 No. 3 Power generation and substation remote monitoring and control (Ⅰ)
・Electricity Cooperative Research Vol. 26 No. 2 Power generation and substation remote monitoring and control (Ⅱ)
・Electricity Cooperative Research Vol. 31 No. 6 Remote monitoring and control of power generation and substations (Ⅲ)
■Maintainability
・A device that can reliably detect failures in each part and determine the details of the failure part.
・A configuration that standardizes hardware and maintains compatibility of parts.
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Product
River management products Water intake automatic control device
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Handling Company
Densei Comtech Co., Ltd.
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Categories
1 Models of River management products Water intake automatic control device
| Product Image | Part Number | Price (excluding tax) | Commercial frequency withstand voltage (between electrical circuits and ground) | Earthquake resistance | Environmental conditions Ambient temperature | Environmental conditions Relative humidity | Environmental conditions Surrounding environment | Insulation resistance (between electric circuit and ground) | Reliability Equipment and component configuration | Reliability Fail-safe/Fool-proof | Reliability Signal error control | Reliability Surge protection | Reliability System diagnosis | Scalability |
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Water intake automatic control device |
Available upon quote |
Equipment rated voltage 30V or less: AC500V 1 minute Equipment rated voltage exceeding 30V and below 60V: AC1000V for 1 minute Equipment rated voltage exceeding 60V and below 250V: AC2000V for 1 minute |
Device that can withstand static acceleration of 1.5G in installed state |
Indoor:+5℃~+40℃ Outdoor: -35℃~+40℃ |
Indoor: 30%~80% Outdoor: 10%~95% |
Indoor: General switchboard room level Outdoors: Wind speed up to 40m/s, snowfall 3m |
Equipment rated voltage 30V or less: 5MΩ or more with DC100V megger Rated voltage of equipment exceeding 30V and below 60V: 5MΩ or more using DC250V megger Rated voltage of equipment exceeding 60V and below 660V: 5MΩ or more with DC500V megger |
Minimum number of parts required Preventing failure from spreading to other functions by dispersing functions Parts selection based on usage experience and sufficient performance consideration |
Functional design to shift to the safe side in the event of equipment abnormality or operator error | Countermeasures against erroneous control output using parity, constant mark verification, etc. |
Insulation measures against external surge using photocouplers etc. Measures against surges from power supply |
Implements a diagnostic function to detect abnormal conditions in the device | Devices are decentralized by function and designed to make it easy to expand devices, add functions, and make changes. |
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About Company Handling This Product
- Japan