描述
管理因素,即运行管理不到位。
1.农村地广人稀,用电负荷分散,导致配电网覆盖面积太大。考虑到设备利用率,变电站布点少,直接导致配线距离较长,10kV线路供电半径超过15km都是司空见惯的事。因此线路损耗较大,进而电压损失严重。
2.线径过细,线路老化。农网配电线路多建设于1、2期农网改造时期,由于当时技术与经济条件的限制,早期线路选型标准低(基本为单相供电),且随着用电负荷的日益增加,如今线径过细已是必然问题。加上部分农村线路经过长期的过载运行,老化严重,造成电压损失严重。
3.变压器选型与布置不合理。由于供电区域面积不断外扩,负荷末端变成了负荷首端,但原有变压器位置没变,导致变压器远离负荷中心,变压器布置不合理问题突出。
4.三相负荷严重不平衡。电网损耗与电流的平方成正比例关系,当三相负荷平衡时,系统的损耗最小。
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主营:世界知名品牌的PLC、DCS系统备件模块
①Allen-Bradley(美国AB)系列产品》
②Schneider(施耐德电气)系列产品》
③General electric(通用电气)系列产品》
④Westinghouse(美国西屋)系列产品》
⑤SIEMENS(西门子系列产品)》
⑥销售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系统、WDPF系统、MAX1000系统备件。
⑧Invensys Foxboro(福克斯波罗):I/A Series系统,FBM(现场输入/输出模块)
顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数
据通信及处理等。Invensys Triconex:冗余容错控制系统、基于三重模件冗余(TMR)
结构的zui现代化的容错控制器。
⑨Siemens(西门子):Siemens MOORE,Siemens Simatic C1,Siemens数控系统等。
⑩Bosch Rexroth(博世力士乐):Indramat,I/O模块,PLC控制器,驱动模块等。
◆Motorola(摩托罗拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
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