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20 Job No. 2669.01 Water Systems Alternative Energy Feasibility Study <br />turbine and generator, a remotely controlled valve on the inlet of the turbine and an isolation valve on the <br />discharge, an electrical panel to control the turbine and take power from it, a new metered connection to <br />deliver the power to SCE, and some additional SCADA points. <br />Thrust <br />Block <br />New <br />Generator <br />Vault <br />MWD 1::1 24.. <br />Figure 6 <br />SA -6 Proposed Configuration <br />Pressure Relief <br />---Va�lvee L ' <br />'/ ' a" � Y <br />24 L'.j To Santa Ana <br />Pressure <br />Reduction <br />6" 10" 16^ Valveswith <br />Flow Control <br />Vault Under Sidewalk <br />Thrust <br />Block <br />New Construction <br />When the Agency needs 12 CFS through this station it would open flow through the turbine, using a combination <br />of the automated valve and the wicket gates to minimize sudden pressure changes. The PRV could be kept at a <br />higher setpoint so that it does not typically operate unless there were an unusual demand for water at this <br />point. The control valve and wicket gates would be remotely operated to shut down flow in the turbine when <br />appropriate, as well. <br />The electricity generated by the hydro -turbine at this location cannot offset an adjacent City of Santa Ana load, <br />as the only electric load at this location is instrumentation and lighting. It is anticipated that the generated <br />electricity will be used to off -set another city meter through the Renewable Energy Self -generation Bill Credit <br />Transfer mechanism know as RES BCT. This allows the value of electricity generated by the turbine to be <br />metered by SCE on a TOU-GS-1-C rate schedule. The dollar value of this electricity can be used to offset the <br />generation component at one or more city electric meters. <br />The power produced by this flow and pressure difference is calculated here. The pressure drop is lower than for <br />the other turbines, because the discharge of the turbine goes to the higher -pressure zone in the city, so the <br />typical pressure drop is from 177 to 100 psig. <br />CITY OF SANTA ANA 19H-28 Newcomb I Anderson I McCormick <br />