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Sādhanā

, 44:217 | Cite as

Impact of microgrid operation on performance of radial distribution system

  • SHALAKA CHAPHEKAREmail author
  • ANJALI DHARME
Article
  • 34 Downloads

Abstract

Voltage profile and real power loss are the criteria in determining performance of Radial Distribution System (RDS). Presence of Distributed Generators in RDS is assessed by ‘Penetration Ratio’. The use of PR fails in the analysis of the implications of the presence of a Microgrid on RDS as it is zero in islanded mode and sometimes in grid-connected mode. An attempt has been made to introduce a new term ‘Relief Factor’ to overcome this lacuna. This Factor is evaluated by developing an algorithm based on power flow analysis using Backward Forward Sweep method. The developed algorithm is tested on a 34 bus RDS by integration of a two-shift industrial Microgrid. The power flow analysis is run for 24 snapshots of the day. Relief Factor is found to be suitable to analyze the impact of a Microgrid on the performance of RDS in both the modes of Microgrid operation viz. grid-connected mode and islanded mode.

Keywords

Radial distribution system microgrid power flow penetration ratio 

List of symbols

Ii

line current in ith line

Ri

resistance of ith line

PG

total active power supplied to RDS by the utility

QG

total reactive power supplied to RDS by the utility

PD

total active power demand of RDS including Microgrid demand

QD

total reactive power demand of RDS including Microgrid demand

P loss

active power loss in RDS

Q loss

total reactive power loss in RDS

PGµG

active power generation of Microgrid

QGµG

reactive power generation of Microgrid

PDµG

active power demand of Microgrid

QDµG

reactive power demand of Microgrid

\( {\text{P}}_{{\upmu{\text{G}}}}^{\text{in}} \, \)

active power exported by Microgrid to RDS

N

number of generators in Microgrid

m

number of lines in RDS

σ

relief factor

λ

penetration ratio

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Copyright information

© Indian Academy of Sciences 2019

Authors and Affiliations

  1. 1.Department of Electrical EngineeringCollege of EngineeringPuneIndia

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