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1 正确选择变压器的容量和安装位置 农村综合性配电变压器的容量,一般应以满足实际所需要负荷的最大值为标准,最多留有不超过10％的裕度,以防止大马拉小车,增加损耗。配电变压器应安装在负荷中心而不是地理位置中心,要使配变靠近负荷大的地方。供电方式应采用放射式,这样可以缩短供电距离,降低导线上的功率损失。2 采用子母变压器,提高配变利用率 目前,农村相当一部分配变利用率低,一年中除抗旱、打场等农忙季节负荷较高外,长时间处于低负荷运行状态。采用子母变压器,可根据需要投运不同容量的变压器,抗旱、打场时投大容易变压器或全投,其他时间投小容量变压器。这样可大大提高配变利用率,降低配电变压器的空载损耗。
1 Correct choice of transformer capacity and installation location The capacity of rural comprehensive distribution transformers should generally meet the actual needs of the maximum load as a standard, up to a maximum margin of not more than 10% to prevent the big car, Increase the loss. Distribution transformers should be installed in the center of the load rather than the geographical center, to make distribution closer to the load of large places. Power supply should be used radiating, which can shorten the power supply distance, reduce the power loss on the wire. 2 Adopting the sub-transformer to improve the utilization rate of distribution transformer At present, a considerable part of rural distribution transformer utilization rate is low. In addition to the drought-resistant and playing fields during the year, the load in busy agricultural season is relatively high, and the vehicle is in a low-load operation state for a long time. The use of sub-transformers, transformers can be put into operation with different capacity, drought, fight when the vote cast a large transformer or all-cast, other time cast small capacity transformers. This can greatly improve utilization of distribution transformer, reduce the no-load loss of distribution transformers.