Adaptive Quasi-power Differential Protection Scheme for Active Distribution Networks

With the massive integration of distributed generations (DGs), distribution networks gradually become more active and flexible. Conventional overcurrent protection is difficult to adapt to such active distribution networks (ADNs). Current differential protection (CDP) is a good choice for solving th...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on smart grid 2024-01, Vol.15 (1), p.1-1
Main Authors: Yuan, Tong, Gao, Houlei, Peng, Fang, Li, Lin, Zhang, Yunchi, Zhao, Qian
Format: Article
Language:English
Subjects:
active distribution network
Circuit faults
Criteria
differential protection
Distributed generation
Distribution networks
Equivalent circuits
Manganese
Network topologies
Overcurrent
Power transmission lines
Sensitivity
Tellegen’s theorem
Theorems
unmeasured T-connected load branch
Voltage
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:With the massive integration of distributed generations (DGs), distribution networks gradually become more active and flexible. Conventional overcurrent protection is difficult to adapt to such active distribution networks (ADNs). Current differential protection (CDP) is a good choice for solving this issue, but the multi-branch structure of ADNs especially the unmeasured T-connected load branch affects the protection's sensitivity. Therefore, the paper proposes a quasipower differential protection (QDP) scheme based on Tellegen's theorem. First, the feasibility of applying Tellegen's theorem to ADNs was analyzed. On this basis, reasonable protection criteria were designed for different scenarios of ADNs. Then, an adaptive protection scheme was established, which can automatically adjust the criteria depending on the presence of Tconnected branches within the protected section. Finally, extensive simulations were carried out in an ADN model using PSCAD/EMTDC software. The simulation results demonstrate that the proposed protection scheme has excellent adaptability to network topologies, fault types, fault resistances, and network structures of ADNs.
ISSN:1949-3053
1949-3061
DOI:10.1109/TSG.2023.3286489