A New Method of Fault Direction Identification for Different Types of Renewable Energy Source Integrations

Autor:	Qinghua Lai, Xianggen Yin, Zhe Zhang, Kehan Xu
Rok vydání:	2022
Předmět:	Sequence Crowbar business.industry Computer science Electrical engineering Energy Engineering and Power Technology Fault (power engineering) Renewable energy Power (physics) Inverter Electrical and Electronic Engineering business Short circuit Voltage
Zdroj:	IEEE Transactions on Power Delivery. 37:2932-2941
ISSN:	1937-4208 0885-8977
DOI:	10.1109/tpwrd.2021.3119356
Popis:	The characteristics of the short circuit current of renewable energy sources are quite different from those of traditional generators. When applied to tie lines and collector lines of renewable energy sources, the traditional directional elements may not operate correctly. A new method of fault direction identification suitable for inverter power sources and doubly fed power sources based on the fault features of renewable energy sources is proposed. The fault type is judged by sequence voltage. The fault direction is identified by comparing the amplitude between the sequence currents and the phase angle between the sequence voltage and the sequence current, without distinguishing whether the crowbar of the DFIG is triggered. The results of digital simulations and experiments show that this method is not affected by the types of renewable energy sources connected to the power grid and can correctly judge the fault direction in different fault types, which has good engineering application value.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9941802b272e0b50d44d145080eb6849 https://doi.org/10.1109/tpwrd.2021.3119356 Zobrazit plný text záznamu