201802_Renewable Energy

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This power monitoring and control system carries out the following main functions:•Operation planning and monitoring Using the power generation scheduling system, operators can access the weekly operation plan data, based on which they can draw up an operation plan for the next day. At their stations, operators can view graphic displays showing the power sales target, power generation plan, and battery charge-discharge plan.•Associated power monitoring Operators can view data on total power output for the entire facility, battery charge status, and transformer operation status.•Windmill monitoringFor each windmill, data on power output, wind direction and speed, and operating status is displayed.•Battery monitoring For each battery, the charge-discharge rate, charge status, and operation status are displayed.•Remote monitoring and controlOperations can also be monitored and controlled wherever network access is available.Customer SatisfactionThe integrated control system allows JWD to manage the operation of each of its windmills and provide a steady supply of power to the national power grid. JWD plans to begin constructing wind farms outside Japan, and to this end is working together with Yokogawa and Tokyo Densan to develop the necessary high-speed systems and equipment. Through this development of renewable energy facilities, JWD hopes to make a lasting and significant contribution to the building of a more sustainable society.Central control roomWindfarm ControlEnergy Management System (EMS)SCADABattery ControlBatteryChargingPowerChargingTimeSmoothedpower tonational grid07121823Power generation by windmillsTotal system configurationPlant dataWindmills: 34 x 1,500 kWBattery: NaS type, 2 MW x 17 sets with 17 sets of AC/DC convertersTransmission capacity: 51 MWTransformer: Primary - 154 kV/60 MVA, secondary - 22 kV/60 MVASuccess Story Collection2Rokkasho Wind Farm / Japan