Travelling wave protection with disturbance classification for distribution grids with distributed generation

The Journal of Engineering

Nadezhda Davydova¹ 

[1]Power Systems Laboratory , ETH Zurich , Switzerland

关键词: protection system;    disturbance classification;    high-frequency current measurements;    power-frequency voltage measurements;    conventional distribution level protection systems;    distributed generation;    IEEE 34-bus distribution system;    high penetration;    active grids;    reliable speed;    high-speed;    medium voltage lines;    distribution grids;    wave protection;    cost-efficient protection systems;   

DOI  :  10.1049/joe.2018.0176

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

The high penetration of distributed generation in distribution grids and the development of microgrids may cause the malfunctioning of the conventional distribution level protection systems. Despite multiple works dedicated to addressing this problem, the development of reliable, high-speed, and cost-efficient protection systems for active grids remains a topical issue. This study proposes a protection system for medium voltage lines that relies entirely on the analytical description of travelling wave transients. This protection uses only local high-frequency current measurements and power-frequency voltage measurements, which potentially makes it a low-cost yet reliable solution. The protection system operates securely by not tripping healthy lines in case of disturbances that do not lead to any faults. The proposed protection is tested on the IEEE 34-bus distribution system with distributed generation.

【 授权许可】

CC BY