浅谈电力变压器的保护设计

Design on the Protecion of Power Transformer

电能作为当今社会的一种重要能源,它影响着国民经济的发展。如今的电力系统更是由电能的产生、输送、分配包括用电等环节组成的一个复杂系统。而电力系统的发展对继电保护也提出了更高层次的要求。变压器是电力系统中必不可少的设备,它的可靠性直接影响着系统的安全运行。由于变压器的重要性及其自身的昂贵价值,一旦它发生故障或遭到了破坏,其影响范围大,将造成严重的后果,所以应该根据变压器在实际运行中可能发生的各种故障及不正常工作状态装设必备和可靠地保护,以提高电力系统安全经济的运行水平。因此,文章研究了变压器的故障类型,并针对10 000 kVA(35 kV/10 kV)油式变压器设计了其应有的保护类型。

Energy as an important energy source for today＇s society,it affects the development of the national economy.Now the power system is a complex system composed of electric power generation,transportation,and distribution including electricity components.At the same time,development of relay protection of power systems are also put forward higher requirements.Transformers are essential equipment in power system,which directly affects the reliability of the safe operation of the system.Because of the importance of the transformer and its expensive value,once it fails or been destroyed will cause great influence.Therefore,it should be installation of necessary and reliable protection according to the faults of the transformer that may occur in the actual operation and abnormal operation,in order to improve the level of safe and economic operation of power system.This article researches the failure types of transformer,and designs the protection type for10 000 kVA（35 kV/10 kV）Oil type transformers.