5.3.1 The process for unit pump starting and condenser starting in pumping direction shall be as the followings.(1) Unit starting mode and unit to be started have been selected.(2) Pumping operation conditions of the selected unit are met.(3) The selected...[繼續(xù)閱讀]

    5.4.1 The following steps shall be carried out for changeover from pumping mode to standstill.(1) Give a command the governor to close the guide vanes to minimum pump position.(2) Trip the generator circuit breaker and suppress the field.(3) Command the g...[繼續(xù)閱讀]

    6.1.1 Each controlled device (oil pumps,water pumps,compressors,etc.) of unit auxiliary equipment and plant common equipment should be provided with three control modes of “manual”,“automatic” and “off”. Each controlled device shall be equipped with a gro...[繼續(xù)閱讀]

    6.2.1 As each of the oil pressure system,used as the servomotor oil source for butterfly valve,spherical valve and ring gate,is equipped with two oil pumps,the pumps shall be in a lead-lag control arrangement and the main and standby motors shall be autom...[繼續(xù)閱讀]

    6.3.1 When each compressed air system is equipped with several compressors,the compressors shall be designed in lead-lag control arrangement. When the air pressure of compressed air tank decreases to the 1st lower limit,the main compressor shall be starte...[繼續(xù)閱讀]

    6.4.1 When adopting pump water supply system for each unit (or secondary circulation water system with filters),the control of pumps shall meet the following requirements.(1) The main pump shall start automatically as unit starts,and keeps working as unit...[繼續(xù)閱讀]

    6.5.1 When the water level of drainage sump rises to the 1st upper limit,the main pump shall be started automatically. If the water level rises to the 2nd upper limit,the standby pump shall be started automatically,and the alarm shall be sent out. When wa...[繼續(xù)閱讀]

    6.6.1 Three detectors or more shall be provided at the bottom floor of powerhouse (including operation corridor).6.6.2 Each level detector shall include two sets of output contacts at least. the alarm shall be sent out when water level exceeds the 1st upp...[繼續(xù)閱讀]

    6.7.1 Fans shall keep working during operation of oil-natural-air-forced (ONAF) transformer and air-forced-cooling dry-type transformer. The permissible load and operation time of transformers without fans shall meet the requirements of manufacturers.6.7....[繼續(xù)閱讀]

    7.1.1 Excitation system shall meet the requirements of the generator and the power grid in various operation modes and in faults.7.1.2 Self-shunt potential source static excitation system should be adopted for excitation system.7.1.3 The relevant paramete...[繼續(xù)閱讀]