[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fHVzHScfdAdFqMOJMHD7rhmfbW1XfRv3neyezKW2wbJw":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":24,"type":25},[],"2024-06-05 00:19:12",148792456,[8,9,10,11],"±5% 和 ±(0.2~0.5)Hz","±5% 和 ±(0.2~0.5)%","±5V 和 ±(0.2~0.5)Hz","±5V 和 ±(0.2~0.5)%",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},7,"cfc7d9361dc5f447a73ef330fa83cb22","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F849f8566d8a0749ddbacfe75e1f94a8a.jpg","电力系统分析基础  23-24-2","work_32269802","第一章.xls.xls","输电网允许的电压偏移和频率偏移分别为( )",[21,26,35,45,56,62,67],{"answer":22,"createTime":5,"id":6,"options":23,"question":19,"source":24,"type":25},[],[8,9,10,11],"v1",0,{"answer":27,"createTime":5,"id":28,"options":29,"question":34,"source":24,"type":25},[],148792457,[30,31,32,33],"中性点直接接地方式,在发生单相接地故障时,会发生中性点偏移","中性点不接地方式,在发生单相接地故障时,故障电流较小,称为小电流接地系统","中性点经消弧线圈接地系统中,单相接地故障电流很大,属于大电流接地系统","中性点不接地方式,发生单相接地故障时,中性点不会发生偏移","对各种中性点接地方式描述正确的是就( )",{"answer":36,"createTime":5,"id":37,"options":38,"question":43,"source":24,"type":44},[],148792458,[39,40,41,42],"发电机","变压器","输电线路","电动机","下列哪些属于电力系统中的输配电环节",1,{"answer":46,"createTime":47,"id":48,"options":49,"question":55,"source":24,"type":44},[],"2024-06-05 00:19:13",148792459,[50,51,52,53,54],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F059f53bec5554b39acab8f9ccb0f52aa.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe9871253f44ab144e45763560318a208.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fea5d03c2e49510946b797e0a9d8ffc61.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1c4acbbe14ab53424e9d107bf9f1a616.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F165e8f9c213eb707c89f2edad04dbb02.png\">","下列接线方式中,属于有备用接线的包括( )",{"answer":57,"createTime":47,"id":58,"options":59,"question":60,"source":24,"type":61},[],148792460,[],"电力系统的运行有哪些特点?对电力系统运行的基本要求有哪些",4,{"answer":63,"createTime":47,"id":64,"options":65,"question":66,"source":24,"type":13},[],148792461,[],"电力系统接线图如图所示,标出图中各发电机、变压器和电动机的额定电压.\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2cef5788905195b42170b50de39cf083.png\">",{"answer":68,"createTime":47,"id":69,"options":70,"question":71,"source":24,"type":13},[],148792462,[],"电力系统的部分接线如图所示,试求:(1)发电机、电动机及变压器高、中、低压绕组的额定电压; (2)设变压器T1高压侧运行于+2.5%抽头,中压侧工作于+5%抽头,T2运行于主抽头,T3运行于-2.5%抽头时,各变压器的实际变比. \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd6ad12335008b866ebaea0ceb0257f77.jpg\">"]