Service restoration to critical loads using microgrids considering dynamic performance of DGs

The Journal of Engineering

Lingyun Tao¹  Jinghan He² 

[1] School of Electrical Engineering, Beijing Jiaotong University , Beijing , People's Republic of China

关键词: dynamic characteristics;    dynamic performance;    extreme weather event;    low inertia;    microgrids;    dynamic models;    interrupted critical loads;    distribution system;    distributed generators;    restoration process;    restoration procedure;    switching operations;    service restoration;    relatively small capacity;    prime-mover stalling;    critical load restoration problems;   

DOI  :  10.1049/joe.2018.0153

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

When an extreme weather event strikes a distribution system, it is helpful to use microgrids to restore the interrupted critical loads. Due to the relatively small capacity and low inertia of distributed generators (DGs), the switching operations during the restoration process may cause severe fluctuations in voltage, current, and frequency, leading to prime-mover stalling or triggering protection relays. It is essential to investigate the dynamic characteristics of DGs during the restoration procedure. The dynamic models of different types of DGs are developed to analyse the dynamic characteristics. Analytical constraints on the dynamic performance of DGs are obtained from the simulation results, which can be incorporated into the optimisation models of critical load restoration problems. The modified IEEE 32-bus test feeder is simulated to validate the effectiveness of the proposed method.

【 授权许可】

CC BY