NDLI: Optimal coordination of dual-setting directional over-current relays in multi-source meshed active distribution networks considering transient stability

Content Provider	IET Digital Library
Author	Yazdaninejadi, Amin Nazarpour, Daryoush Talavat, Vahid
Abstract	Sustainable electrification calls the need for more efficient protection schemes. Synchronous-based distributed generations (SBDGs) are more susceptible to power grid faults owing to their low inertia time constants. Accordingly, fault elimination faster than the associated critical clearing time (CCT) is required to prevent unintentional disconnection of SBDGs, which inevitably makes the coordination of directional over-current relays (DOCRs) complicated than before, especially in meshed structure distribution networks (DNs). This study proposes communication assisted dual-setting DOCRs as effective solutions for providing fast-response protection in order to meet transient stability constraints of SBDGs in meshed active DNs. Dual-setting DOCRs are capable of operating in both forward and reverse directions with individual settings for each direction and thus providing flexibility in the coordination process. In this regard, time domain simulation as a reliable method is conducted to calculate CCTs. Afterwards, coupled with selectivity constraints associated with dual-setting DOCRs, transient stability constraints are all together accommodated in the optimisation process. Moreover, dual-setting DOCRs are allowed to follow user-defined time-inverse characteristics which help to alleviate clearing time of faults. The approach reveals a non-linear programming model which is tackled by seeker algorithm. Detailed numerical studies are carried out to validate the performance of the proposed approach.
Starting Page	157
Ending Page	170
Page Count	14
ISSN	17518687
Volume Number	13
e-ISSN	17518695
Issue Number	Issue 2, Jan (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/13/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2018.5431
Journal	IET Generation, Transmission & Distribution
Publisher Date	2018-08-24
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Communication Assisted Dual-setting DOCR Control of Electric Power System Distributed Power Generation Distribution Network Dual-setting Directional Over-current Relays Fast-response Protection Fault Elimination Linear Programming Low Inertia Time Constants Meshed Active DN Multisource Meshed Active Distribution Network Nonlinear Programming Optimal Coordination Optimisation Technique Overcurrent Protection Power Distribution Fault Power Grid Power Grid Fault Power System Control Power System Protection Power System Transient Stability Relay Protection SBDG Seeker Algorithm Stability in Control Theory Sustainable Electrification Calls Synchronous-based Distributed Generation Time Domain Simulation Transient Stability Constraint User-defined Time-inverse Characteristic
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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