变压器保护两种转角方式的比较  

Comparison of two current compensation methods in transformer protection

作　　者：邓祥力[1] 刘世明[1] 

机构地区：[1]烟台东方电子信息产业股份公司保护部,山东烟台264000

出　　处：《继电器》2004年第16期20-24,共5页Relay

摘　　要：对变压器保护中的Δ→Y和Y→Δ两种补偿方式进行了研究。通过理论推导得出了两种补偿方式的算法公式。针对两种转角方法,在变压器保护中对于涌流的识别是否可以采用按相闭锁(单相闭锁单相)方案,用EMTP建模进行了大量的仿真分析。理论和仿真分析的结果证明了两种转角方式在涌流识别中的相似性。This paper analyzes the two current compensation methods of Δ→Y and Y→Δ.Through theoretical and logical reasoning, the algorithmic equations of the two current compensations for current transformer used by transformer protection are obtained. With a large number of simulation data from the transformer model with EMTP, the possibility of realizing the dependent harmonic blocking technique for transformer protection using by the two current compensation methods is analyzed. The results from the theoretical analysis and simulation prove the similarity of the two methods in the distinguishing fault and inrush current.

关 键 词：变压器 保护装置 转角补偿方式 零序补偿 

分 类 号：TM772[电气工程—电力系统及自动化]