基于三相变压器并联运行的条件讨论

三相变压器并联运行时,可有效提高供配电的可靠性,但两台变压器同时工作时,须满足变比大致相等、连接组别相同、短路阻抗相对值大致相同这三个条件,本文从变压器并联运行的原理出发,定性研究若不满足以上条件,会产生系列的不良后果,并给出了相应的理论依据。结果显示,并联的变压器必须同时满足以上三个因素才能够正常运行。

the operation of three - phase transformer connected in parallel,which can improve effectively the power supply reliability, but the two transformers work at the same time,they must meet the same ratio of roughly equal,connections,short - circuit impedance of approximately the same relative value of these three conditions,this paper base on the principle of the parallel operation of transformers,if not meet the above conditions are derived,will produce the bad consequence,as results show,must meet the above three factors,the parallel transformer can run normally.