B3Ⅱ-1A型检漏继电器零序直流选择特性的研究  

Zero sequence DC selective characteristic of B3Ⅱ-1A leak-hunting relay

作　　者：郝金陵[1] 袁振海[1] 赵龙章[1] 方志[1] 许必熙[1] 

机构地区：[1]南京工业大学自动化学院,江苏南京210009

出　　处：《电力自动化设备》2008年第4期63-67,共5页Electric Power Automation Equipment

摘　　要：运用零序直流选择性漏电保护原理,对苏联研制的B3Ⅱ-1A型检漏继电器的选择特性进行理论研究。根据B3Ⅱ-1A型检漏继电器检测电路中整流管的导通特性,建立工频周期内3个时段的瞬态检测电流电路和漏电流电路数学模型,用相量法分析各检测电流。其次,用谐波分析法计算各检测电流的理论值,用Matlab仿真各检测电流理论波形。最后,通过模拟电网实验证明理论计算和实验数据具有高度一致性。从理论和实验2个方面验证了B3Ⅱ-1A型检漏继电器的检测电路具有选线功能。With the principle of zero sequence DC selective leakage protection,the selectivity of B3 Ⅱ -1A leak-hunting relay made in USSR is studied. According to the conducting characteristic of rectifying tubes in its detection circuit,mathematical models of instantaneous detection current circuit and instantaneous leakage current circuit are established for the three periods of a power cycle. The measured current is analyzed by the vector technique,its theoretic value is calculated by the harmonic analysis method and its theoretic waveform is simulated by Matlab. The simulative experiment of power net verifies the consistency of experimental data with theoretic data,which validates the line selection function of B3Ⅱ-1A leak-hunting relay.

关 键 词：检漏继电器 零序直流 选线 数学模型 谐波分析 

分 类 号：TM714[电气工程—电力系统及自动化]