Relay protection scheme based on multi-channel feature fusion model

Ying Lu; YueQiang Wang

doi:10.1117/12.2679943

18 July 2023 Relay protection scheme based on multi-channel feature fusion model

Ying Lu, YueQiang Wang

Proceedings Volume 12722, Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023); 127221U (2023) https://doi.org/10.1117/12.2679943
Event: International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023), 2023, Hangzhou, China

Abstract

The interaction between AC and DC in the power grid system and the characteristics of DC system will have an impact on converter transformer. The DC current enters the winding through the neutral point of the converter transformer, which changes the operating characteristics of the iron core, produces bias flux, and even affects the correct operation of relay protection. In this paper, a multi-channel feature fusion model is introduced, which has a good direction. The characteristic relationship between the fault impedance and the impedance components is obtained by measuring the impedance. The fault impedance is solved by using adaptive coefficients to effectively reduce the influence of fault resistance. Considering that the fault impedance angles of multi-channel protection of different line types are different due to different fault points, the influence caused by different impedance angles is effectively solved by adjusting the conversion between the measured impedance and the fault impedance. In the experiment, by comparing the relationship between the sensitivity of this scheme and the line impedance, the feasibility of the setting is analyzed. The research effect of this paper is proven. It is of great practical significance to study the relay protection of the distribution network.

Citation Download Citation

Ying Lu and YueQiang Wang "Relay protection scheme based on multi-channel feature fusion model", Proc. SPIE 12722, Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023), 127221U (18 July 2023); https://doi.org/10.1117/12.2679943

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available