7.2.1 Three-phase fully-controlled rectifier bridge shall be adopted for thyristor rectifier unit.7.2.2 Disconnectors may be applied on both AC and DC sides of thyristor rectifier bridge.7.2.3 Automatic excitation regulator may be provided with dedicated ...[繼續(xù)閱讀]

    7.3.1 Excitation system shall be provided with automatic de-excitation equipment,and inversion de-excitation should be adopted during normal stop and emergency shutdown due to mechanical faults. In case of electrical faults,linear or nonlinear resistor de...[繼續(xù)閱讀]

    7.4.1 AC field flashing,DC field flashing and residual voltage field flashing may be adopted for the field flashing mode of turbine generator units. The field flashing circuit may be designed based on a flashing current of 10% of the generator no-load fie...[繼續(xù)閱讀]

    7.5.1 The mode of direct three-phase short-circuit should be adopted for generator electrical braking.7.5.2 The excitation power supply of electrical braking may be derived as the followings.(1) When the excitation transformer is connected to the generato...[繼續(xù)閱讀]

    7.6.1 Field flashing shall possess automatic mode and manual mode. Manual mode is only used for commissioning. When the unit speed rises from 0% to 95% of the rated speed,the field flashing device shall be applied automatically or manually. When the volta...[繼續(xù)閱讀]

    7.7.1 Excitation system shall be provided with two sets of independent regulation channels,which may be dual automatic channels (at least one includes manual regulation function),or an automatic channel together with a manual channel.7.7.2 Both regulation...[繼續(xù)閱讀]

    8.1.1 All of the generator circuit breakers and high voltage circuit breaker of generator-transformer unit (when the generator circuit breaker is not equipped) shall be taken as synchronization points.The automatic synchronization shall be adopted as the ...[繼續(xù)閱讀]

    8.2.1 Synchronization conditions checking should be carried out with combination synchronization meter with display functions of the frequency difference,the voltage difference,and the angle difference.Combination synchronization meter shall be provided o...[繼續(xù)閱讀]

    8.3.1 Automatic synchronization device with automatic frequency regulation and voltage regulation functions shall be selected. On/off function of frequency regulation and voltage regulation may be provided.8.3.2 Each unit should be equipped with a set of ...[繼續(xù)閱讀]

    9.1.1 Methods for black start include the followings.(1) Black start with diesel generator.(2) Black start with direct-current system of the power plant....[繼續(xù)閱讀]