Congestion Management in High Solar PV Penetrated Distribution System Using Smart Charging of Electric Vehicles
Abstract
Electric-powered vehicles are introduced as a sustainable transportation solution in an evolving road transportation sector. The uncontrolled charging of electric vehicles (EVs) results in negative impacts, such as system overloading, congestion, increased power losses, and voltage stability issues in the distribution system. On the other hand, high penetration of solar PV generation leads to network congestion, overloading, voltage instability, and power quality, in addition to its intermittent power generation. However, smart charging of EVs offers high controllability, so the negative impacts on the distribution system in the presence of high penetration of solar PV can be mitigated by controlled EV charging. In this work, the smart charging of electric vehicles is developed to mitigate the congestion issue in high solar PV penetrated distribution systems. The charging control of EVs in grid-to-vehicle (G2V) charging mode is considered with the objective of network power loss minimization to manage network congestion. The objective function is formulated as a mixed integer non-linear programming (MINLP) optimization problem. Modified IEEE 33 bus system is considered for simulation with different percentage penetration of solar PV and EVs. The result shows that the smart charging of EVs minimizes network power loss while managing network congestion.
Keywords
Congestion management, Electric vehicle, Network power loss, Smart charging, Solar pv