大型泵站供电系统变压器并列运行应用研究

Application Research on Parallel Operation of Transformers in Power Supply System of Large Pumping Station

山东半岛蓝色经济区的发展受到水资源短缺的严重制约,而调水工程的安全运行离不开稳定的电力供应,变压器检修养护时水泵机组必须停机,影响调水的持续性。本文为改变这一现状,提出了变压器并列运行的设计方案,以泵站变压器为研究对象,设计了两台主变并列运行方案,并对其可行性进行研究,对可能存在的相位角、环流等问题提出了解决方法,对大型泵站供电系统未来的发展提供了新的思路。

The development of the Shandong Peninsula Blue Economic Zone is severely constrained by water shortages,the safe operation of the water transfer project is inseparable from the stable power supply, and the pump unit must be shut down during transformer maintenance, which affects the continuity of the water transfer. In order to change this situation, this paper puts forward the design plan of parallel operation of transformers. Taking pump station transformer as the research object, two parallel operation plans of main transformers are designed and their feasibility is studied. The possible phase angle and circulating current are studied. The problems and other solutions are proposed, which provide new ideas for the future development of the power supply system of large pumping stations.