1.0.1 This code is compiled to realize automation of large-and-medium-sized hydropower plants and to improve power quality,operation safety,economical benefit and labor productivity.1.0.2 This code is applied to automation design of newly-built,extended o...[繼續(xù)閱讀]

    2.0.1 Fault An unplanned occurrence or defect in an item,which may result in failures of the item itself or of other associated equipment.2.0.2 Abnormality Operating conditions,e.g. voltage,current,power,pressure,liquid level,out of normal conditions.2.0....[繼續(xù)閱讀]

    3.1.1 An emergency gate shall be able to be controlled both locally(in the hoist room),and remotely (in the central control room and unit local control unit,LCU for short below). In the local control mode,closing and opening of the gates shall be able to ...[繼續(xù)閱讀]

    3.2.1 A butterfly valve shall be controlled either locally or remotely,and its joint control with unit automatic control shall be achieved.3.2.2 The following preconditions must be satisfied before opening of butterfly valves.(1) Unit emergency shutdown s...[繼續(xù)閱讀]

    3.3.1 A spherical valve shall be controlled either locally or remotely,and its joint control with unit automatic control shall be achieved.3.3.2 The following preconditions must be satisfied before opening of spherical valves.(1) Unit emergency shutdown s...[繼續(xù)閱讀]

    3.4.1 A ring gate shall be controlled either locally or remotely,and its joint control with unit automatic control shall be achieved.3.4.2 The following preconditions shall be satisfied before opening of ring gate.(1) Unit emergency shutdown sequence is n...[繼續(xù)閱讀]

    4.1.1 Digital electro-hydraulic governor shall be adopted forhydraulic generating units. The de-energize-to-shutdown principleshould be adopted for governor,and the guide vanes should be shutdown automatically when control powers are lost. The governors o...[繼續(xù)閱讀]

    4.2.1 Automatic control system of turbine generator units shall be able to carry out mode transferring,such as standstill to generating,generating to standstill,generating to condensing,condensing to generating,standstill to condensing,condensing to stand...[繼續(xù)閱讀]

    5.1.1 Starting methods for reversible pumped-storage units in pumping mode shall be selected through technical and economical comparison according to practical conditions of units,power plants and power grid.5.1.2 In order to reduce the hydraulic resistan...[繼續(xù)閱讀]

    5.2.1 A single command shall be able to realize the following changeovers.(1) Standstill→transfer stop→generating mode.(2) Generating mode→transfer stop→standstill.(3) Generating mode→generator condensing mode.(4) Generator condensing mode→generating mode...[繼續(xù)閱讀]