【UPS】UPS与容性负载兼容性.ppt

梅兰日兰创新、发展的40年 * * 第一代三相 5-15 kVA UPS 由Merlin Gerin设计生产 2000 1964 1996 2004 Schneider 重组电气集团 1st LBO 创建MGE UPS SYSTEMS 2nd LBO 85 % 15 % 关于MGE UPS SYSTEMS MGE是全球最高可用性电源保护方案的领导者，无论是在工业领域、企业网络、互联网还是在通讯网络的基础设施上，都是佼佼者 2004年，MGE分享了世界UPS市场份额的14% MGE UPS SYSTEMS的电源解决方案包括： UPS电源系统、静态切换开关STS、配电系统PDU、谐波治理、浪涌抑制、逆变器、电源调节器... 电源管理软件覆盖了几乎所有的应用平台：Microsoft, Novell, Unix, Linux, Mac... 增值服务（AVS）：电源保护系统的结构设计和项目管理、现场电气调查、远程监测、合同维修、培训… * * Presentation Title * Presentation Title * Presentation Title * In this example, a genset of 500kVA feeds a UPS of 400kVA. Its capacitive reactive power is 115kVAR (given by the manufacturer). Main features of the load : DPF = 0.9 leading P = 320kW THDI 20% ? Reactive power = 155kVAR capacitive So, the genset can?’t feed the load. In a few cycles, it will stop due to an overvoltage detection causing a load loss. What are the possible solutions ? - To guarantee the compatibility between genset and load, the first solution consists in oversizing the genset by 35% ; what is most of the time impossible because of the cost. - Another solution consists in using a SineWave 60A to decrease the capacitive current seen by the genset. This active filter can compensate about 40kVAR which is enough to avoid the voltage trouble. Presentation Title * In this example, a genset of 500kVA feeds a UPS of 400kVA. Its capacitive reactive power is 115kVAR (given by the manufacturer). Main features of the load : DPF = 0.9 leading P = 320kW THDI 20% ? Reactive power = 155kVAR capacitive So, the genset can?’t feed the load. In a few cycles, it will stop due to an overvoltage detection causing a load loss. What are the possible solutions ? - To guarantee the compatibility between genset and load, the first solution consists in oversizing the genset by 35% ; what is most of the time impossible because of the cost. - Another solution consists in using a SineWave 6