基于正序故障分量的电流相位差动保护的仿真

Current Phase Dynamic Protection Simulation Based on Positive Sequence Fault Component

本文根据叠加原理给出正序故障分量的概念及特点,详细阐述正序故障分量在电流相位纵联差动保护中的应用原理,对比说明基于正序故障分量的继电保护原理较传统保护所具有的优点。以正序故障分量在电流相位纵联差动保护中的应用为例,利用MATLAB进行仿真验证,证明利用正序故障分量实现电流相位纵联差动保护更为灵敏可靠,还能克服常规保护的许多缺点。

Based on the superposition principle, this paper gives the positive sequence fault component con-cept and its characteristics, elaborates the application principle of positive sequence fault compo-nent in the current phase longitudinal differential protection, and illustrates the advantages of the protection principle based on positive sequence fault component compared with the traditional one. Using the application of positive sequence fault component in the current phase longitudinal differential protection for an example, through MATLAB simulation verification, it is demonstrated that using positive sequence fault component to achieve the current phase longitudinal differential protection is more sensitive and reliable, and also can overcome the disadvantages of the conven-tional protection.