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Irrigation Water Conveyance and Delivery

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https://hdl.handle.net/10217/195480

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Browsing Irrigation Water Conveyance and Delivery by Author "Burt, Charles, author"

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    Canal modernization in Central California Irrigation District - case study
    (Colorado State University. Libraries, 2005-10) Burt, Charles, author; Stoddard, Robert, author; Landon, Russell, author; White, Chris, author; Freeman, Beau, author; U.S. Committee on Irrigation and Drainage, publisher
    Central California Irrigation District (CCID) provides water from the Mendota Dam northward approximately 110 miles, through and to its service area of approximately 120,000 irrigated acres. CCID enjoys a substantial advantage of having some of the most senior water rights in California, but is simultaneously challenged by serious (and increasing) water quality restrictions for its return flows into the San Joaquin River. Recent California law recognizes water transfer as a reasonable and beneficial use of water. Therefore, CCID has begun an aggressive program to modernize its canal system with the goal of improving water delivery service and increasing project irrigation efficiency. Funds received from conserved and transferred water are used to expand the modernization program. The net effect is improved water supply to other users and improved water management for the downslope drainage system. This paper will address the district’s motivation for modernization, the development of the modernization plan, challenges encountered, the roles of various players (consulting engineer, district, integrator, contractors, ITRC), and technical details regarding project implementation. Currently, approximately 40% of the initial modernization plan has been implemented, including downstream control, upstream control, and a large regulating reservoir - all automated with Programmable Logic Controllers (PLCs).
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    ItemOpen Access
    Effective implementation of algorithm theory into PLCs
    (Colorado State University. Libraries, 2005-10) Piao, Xianshu, author; Burt, Charles, author; U.S. Committee on Irrigation and Drainage, publisher
    A major constraint for implementation of automated canal control is the complicated, tedious, and potentially error-ridden task of programming the control algorithm and associated overhead into PLCs (Programmable Logic Controllers). A typical control program may easily occupy 100 pages of Ladder logic that must be painstakingly developed and programmed. The most common argument in favor of Ladder logic - that local electricians can get into the program and modify it if needed - is flawed because (1) local electricians do not understand the logic, and (2) Ladder cannot easily perform many mathematical tasks that are simple in other programming languages. In addition, the Ladder programmed on one brand of PLC is not directly programmable onto another brand because each brand has its own variation of the Ladder language. ITRC's approach to canal automation simulation includes building a model with an excellent hydraulic simulation program, characterizing each pool for storage and resonance, Matlab optimization of the control logic's parameters based on hydraulic properties, and writing the logic in ISaGRAF. These services cannot be performed by integrators, who rarely, if ever, understand the theory behind modern canal control. This has been misunderstood by districts when planning their long-term canal automation strategy, putting at stake large investments into the controller and software programming.
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    ItemOpen Access
    Leveraging SCADA to modernize operations in the Klamath irrigation project
    (Colorado State University. Libraries, 2005-10) Freeman, Beau, author; Hicks, Jon, author; Burt, Charles, author; U.S. Committee on Irrigation and Drainage, publisher
    The U.S. Department of Interior's Bureau of Reclamation (Reclamation) operates the Klamath Irrigation Project in Oregon to divert, store and supply irrigation water to over 200,000 acres of farmland below Upper Klamath Lake. Reclamation has partnered with irrigation districts to undertake an active modernization program including the implementation of a Real-Time Water Management SCADA System for remote monitoring of the main diversions on the Project boundaries and at key control points within individual irrigation districts. Data are recorded at frequent intervals, transmitted to base station computers in headquarters offices where it is displayed, manipulated, and stored. This paper presents an interim assessment of the complex issues concerned with SCADA project implementation in a basin-wide environment with multiple irrigation districts, describing the engineering points of particular innovative, and field-tested concepts. Performance specifications and design standards are discussed to illustrate the specialized details critical for successful integration.
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    ItemOpen Access
    SCADA information umbrellas for irrigation districts
    (Colorado State University. Libraries, 2007-06) Burt, Charles, author; Piao, Xianshu, author; Gaudi, Franklin, author; U.S. Committee on Irrigation and Drainage, publisher
    SCADA systems in irrigation districts have focused on remote monitoring and remote control. In many districts, the remote control is manual, but in others the automation of structures is enabled through the usage of distributed control for the automation of individual structures. This paper presents the concept of an expanded, "umbrella" SCADA system that will perform the standard functions of remote control and remote monitoring, and will also incorporate information flow in the field for operators. The umbrella SCADA system will mesh the equipment-equipment information into an equipment-program-personnel network.