反时限方向过电流保护最优协调整定的分析

Optimized Coordinated Setting for Time-Reserve Directional Overcurrent Protection

反时限方向过电流保护常作为电气设备和配电网的保护,一定程度上它具有三段式电流保护的功能,但其整定相对复杂。文中阐述了利用最优化理论,在保证正确性和选择性的前提下对该保护的最优协调整定,并对其中的几个主要问题,如确定主后备保护对问题、优化模型实现等问题进行了讨论、分析和解决。

Inverse-time directional over-current protections are widely used for electrical equipments and distribution lines. To some extent,it has the three-section current protection function,but the setting of protection is complex relatively. This paper describes the optimal adjustment setting using of the optimization them~ under the ensuring the correctness and selectiveness. Discussed and resolved several of them major issues,such as the questions of the protection pairs and optimum model.