一种新的基于转矩大小的距离保护Ⅰ段反时限特性实现方法

A NEW IMPLEMENTATION METHOD OF THE ZONEⅠRELAY OF THE DISTANCE PROTECTION WITH INVERSE TIME CHARACTERISTICS BASED ON THE MAGNITUDE OF THE TORQUE

提出了一种新的基于转矩大小的距离保护Ⅰ段反时限特性实现方法 ,给出了转矩的定义式及计算方法 ,并针对具体的反应相间故障的阻抗继电器推导了其转矩表达式。大量的仿真计算表明 ,通过合理的整定可以比较理想地实现反时限特性。算法具有很强的实用性和广泛的适用性。

A new method based on the magnitude of the torque to fulfill the inverse time characteristics of the zoneⅠrelay of the distance protection is presented. The definition and the calculation method of the torque are described, too. The expression of the torque for the distance relay is deduced, which is designed for response to the phase to phase fault. According to the simulation, if the relay is set properly, the inverse time characteristics can be perfectly fulfilled. The algorithm is of great practicability and can be applicably used.