作者
Diptak Pal, Bijaya Ketan Panigrahi
发表日期
2021/2/3
期刊
IEEE Systems Journal
卷号
16
期号
1
页码范围
1448-1459
出版商
IEEE
简介
The conventional over/under voltage, over/under frequency based anti-islanding protection scheme presents significant nondetection zone (NDZ) under critical loading conditions of distribution networks. To overcome this challenge, a unique hybrid technique has been proposed in this article for the anti-islanding protection of distributed generators (DGs). The algorithm requires the injection of an active oscillatory disturbance signal of very small magnitude through the current control loop along the direct axis of the synchronously rotating reference frame of the converter. Small signal stability analysis of the system is carried out to analyze the effect of such active signal injection having different frequencies. The anti-islanding protection algorithm first involves the superimposition of d-axis voltage. Thereafter, two novel indexes are proposed based on which the trip signal logic is developed for the protection scheme …
学术搜索中的文章
D Pal, BK Panigrahi - IEEE Systems Journal, 2021