电气运行技术问答(4)

117． 高频保护中母差跳闸和跳闸位置停信的作用是什么？ ······································· 49 118． 电河Ｉ线２２５７开关控制直流有两路，如果第一路控制直流失去，有什么现

象？此时线路故障保护是否能正确动作跳闸？ ·················································· 49

119． 线路丙刀闸电动操作回路闭锁条件有哪些？操作交流电源取自什么位置？ ····· 49 120． 1、2号高备变的什么保护出口动作不起动失灵保护？ ······································ 50 121． CSS100B型稳控装置中各CPU对应哪些元件？ ················································ 50 122． 电河II线微机保护CPU1是何保护？ ································································· 50 123． 稳控装置切机判据有哪些？ ················································································· 50 124． 掉牌未复归信号的作用有哪些？ ········································································· 50 125． 线路北刀闸传动时都受哪些电气元件闭锁？ ······················································ 51 126． 线路甲刀闸传动时都受哪些电气元件闭锁？ ······················································ 51 127． 线路丙刀闸传动时都受哪些电气元件闭锁？ ······················································ 51 128． 发电机南、北刀闸传动时都受哪些电气元件闭锁？ ··········································· 51 网控理论试题库 ··························································································································· 52 129． 串连电阻在电流、电压和电阻上各有什么特点？ ·············································· 52 130． 什么是相电流、相电压、线电流、线电压？ ······················································ 52 131． 内部过电压的分为哪几种？ ················································································· 52 132． 电阻并联在电流、电压和电阻上各有什么特点？ ·············································· 52 133． 少油断路器的基本构造？ ···················································································· 52 134． 少油断路器油量过多有哪些危害？ ····································································· 52 135． 什么叫串联谐振？ ································································································ 52 136． 油开关灭弧方式有哪些？ ···················································································· 52 137． 发生操作过电压的原因有哪些？ ········································································· 52 138． 对电力系统的基本要求有哪些？ ········································································· 53 139． 什么是交流电流的有效值？ ················································································· 53 140． 断路器最高工作电压大小与其额定电压大小有什么关系？ ······························· 53 141． SF6气体有哪些物理性质？ ················································································· 53 142． 对操作机构的分闸功能的技术要求有哪些？ ······················································ 53 143． 什么是电阻？········································································································ 53 144． 断路器的作用是什么？ ························································································ 53 145． 故障录波器作用有哪些？ ···················································································· 53 146． 断路器铬牌有哪些参数？ ···················································································· 53 147． 隔离开关的作用是什么？ ···················································································· 53 148． 隔离开关有什么特点？ ························································································ 54 149． 少油断路器油量过少有哪些危害？ ············· …… 此处隐藏：481字，全部文档内容请下载后查看。喜欢就下载吧 ……