论文部分内容阅读
近日,我居民区450户居民有三分之一住户家中的灯具、彩电、冰箱一夜之间尽行烧毁,损失惨重。我们立即组织有关人员对小区供电系统进行全面检查,结果发现距离变压器出口100米处系统零线断开,导致了上述严重事故的发生。在三相四线照明供电系统中,为了使供电系统平衡运行,往往都是把三相负荷平均地分配在三相电源上,而在实际中,电网的运
Recently, one-third of 450 households in my residential area have lamps, color television sets and refrigerators burned overnight, causing heavy losses. We immediately organized the personnel to conduct a comprehensive inspection of the residential power supply system and found that the zero line of the system 100 meters away from the transformer outlet was disconnected, resulting in the above-mentioned serious accident. In the three-phase four-wire lighting power supply system, in order to balance the operation of the power supply system, the three-phase load is usually distributed on the three-phase power supply. In practice,