【摘要】 传统的母线差动保护受负荷电流、电流互感器饱合、过渡电阻等因素的影响比较严重。为进一步提高母线保护的动作速度和灵敏性 ,本文提出了基于故障电流行波的行波母线保护原理。以一个半断路器母线接线型式为例 ,对母线区内外故障的情况以及各种因素对它的影响进行了分析 ,给出了相应的动作判据。理论分析表明 ,利用电流行波实现的母线保护具有动作速度快 ,灵敏度高和简单可靠等特点更多还原

【Abstract】 The most widely useful bus protection for high voltage power network is high impedance differential protection.Although it can meet the essential requirements,its shortcomings,such as influence of load current,saturation of current transformers,fault resistance,especially the fault current,flowing from bus to line during an internal fault,should be taken carefully in consideration.In order to improve operation speed and sensitivity of bus bar protective relaying,a new bus bar relaying principle based on fault generated current travelling waves is proposed.The corresponding criterion for one and a half breaker model is presented according to detail analysis on internal fault,external fault and influence factors.Theoretical analysis illustrate that bus bar protection based on current travelling waves have properties such as fast operating time,high sensitivity,simplicity and high reliability.更多还原