Chenghan Zhou, Guibin Zou, Shuo Zhang, 等. Energy-based Directional Pilot Protection for Distribution Networks with IBDGs Considering Unmeasured Load Switching[J]. 中国电机工程学会电力与能源系统学报(英文), 2024,10(1):139-150.
Chenghan Zhou, Guibin Zou, Shuo Zhang, et al. Energy-based Directional Pilot Protection for Distribution Networks with IBDGs Considering Unmeasured Load Switching[J]. CSEE Journal of Power and Energy Systems, 2024, 10(1): 139-150.
Chenghan Zhou, Guibin Zou, Shuo Zhang, 等. Energy-based Directional Pilot Protection for Distribution Networks with IBDGs Considering Unmeasured Load Switching[J]. 中国电机工程学会电力与能源系统学报(英文), 2024,10(1):139-150.DOI: 10.17775/CSEEJPES.2021.09230.
Chenghan Zhou, Guibin Zou, Shuo Zhang, et al. Energy-based Directional Pilot Protection for Distribution Networks with IBDGs Considering Unmeasured Load Switching[J]. CSEE Journal of Power and Energy Systems, 2024, 10(1): 139-150.DOI: 10.17775/CSEEJPES.2021.09230.
Energy-based Directional Pilot Protection for Distribution Networks with IBDGs Considering Unmeasured Load Switching
Inverter-based distributed generations (IBDGs) are the main approach to utilizing clean energy in distribution networks (DNs). Compared with synchronous source
fault response of IBDG is very different. As a result
in DNs with high penetration of IBDGs
legacy protection schemes will no longer be applicable. In this paper
an energy-based directional pilot protection scheme suitable for DNs with IBDGs is proposed. This scheme considers the large range of phase angle caused by IBDG integration and uses improved energy polarity criterion to determine fault direction. In addition
magnitude of energy is used to distinguish between faults and load switching to overcome maloperation of directional pilot protection caused by internal unmeasured load switching. The proposed scheme first uses local measured information to determine fault direction sign and then exchanges the direction sign with the remote terminal. This scheme does not require high-bandwidth communication and strict data synchronization
so it can be implemented at a low cost. Finally
simulation studies verify effectiveness of the proposed scheme.