NDLI: Effective microgrid restructuring in the presence of high DG proliferation

Content Provider	IET Digital Library
Author	Srividhya, Subramanian Murali, Venkatakirthiga
Abstract	Distributed generators bring in promising benefits as well as question the efficacious relaying operation of the conventional radial distribution systems on the penetration. Among different types of interface machines, synchronous generators upon increased penetration create major disruptions to the existing operation of relays and circuit breakers due to their high fault current capability. Hence, this work employs reconfiguration as a strategy to mitigate the protection issues imposed by a highly proliferated DG network. As restructuring also has the capability to create relay miscoordinations, a vigilant identification of optimal structure is carried out. 22.9% loss reduction, 24.3% reduction in the sustained interruption hours faced by an average consumer and 35.8% decrease in the maximum electricity price paid by the consumer at a load point are achieved for the practical 52-bus microgrid while attempting to reconfigure in view of addressing the protection challenges. 21.84% drop is observed in total size of fault current limiters as well. 33 and 69 bus benchmark systems transformed to a microgrid are also employed to validate the proposed reconfiguration strategy. New tie-line combinations are searched for each test system in a view to look for a superior structure giving out best results in the context of study.
Starting Page	3783
Ending Page	3801
Page Count	19
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 18, Sep (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/18
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2019.1735
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-06-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	33 Bus Benchmark Systems 52-bus Microgrid 69 Bus Benchmark Systems Circuit Breaker Distributed Generator Distributed Power Generation Efficacious Relaying Operation Fault Current Capability Fault Current Limiters High DG Proliferation Interface Machine Maximum Electricity Price Microgrid Restructuring Optimal Structure Power Distribution Fault Power Distribution Reliability Power Generation Reliability Power Transmission Fault Proliferated DG Network Protection Apparatus Radial Distribution System Reconfiguration Strategy Relay Miscoordinations Reliability Sustained Interruption Hours Synchronous Generator Vigilant Identification
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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Network reconfiguration for the DG-integrated unbalanced distribution system

Minimising direct-coupled distributed synchronous generators impact on electric power systems protection

Smart protection system for identification and localisation of faults in multi-terminal DC microgrid

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Successful fault current interruption on DC circuit breaker

Minimum switching losses for solving distribution NR problem with distributed generation

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Effective microgrid restructuring in the presence of high DG proliferation

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