67 citations · 183 across the 17 of their papers we have counts for
18 papers
Impact of Blockchain Technology on Electric Power Grids -- A case study in LO3 Energy
Sakineh Khalili, Vahid Disfani, Mo Ahmadi
The increasing amount of distributed energy resources including renewable energy systems and electric vehicles is expected to change electric power grids significantly, where conve…
An ADMM-based MIQP platform for the EV aggregation management
Shahab Afshar, Shailesh Wasti, Vahid Disfani
Electric vehicle (EV) aggregation can significantly influence the EVs charging/discharging behavior. In this paper, we use a distributed algorithm based on the alternating directio…
Coordination of OLTC and Smart Inverters for Optimal Voltage Regulation of Unbalanced Distribution Networks
Changfu Li, Vahid R. Disfani, Hamed Valizadeh Haghi +1
Photovoltaic (PV) smart inverters can improve the voltage profile of distribution networks. A multi-objective optimization framework for coordination of reactive power injection of…
Distributed Dynamic Economic Dispatch using Alternating Direction Method of Multipliers
Shailesh Wasti, Pablo Ubiratan, Shahab Afshar +1
With the proliferation of distributed energy resources and the volume of data stored due to advancement in metering infrastructure, energy management in power system operation need…
A Literature Review on Mobile Charging Station Technology for Electric Vehicles
Shahab Afshar, Pablo Macedo, Farog Mohamed +1
While Electric vehicles (EVs) adoption is accelerating in an unprecedented way, lacking EV charging infrastructure hinders the development of the EV market. To compensate for these…
MMC-Based Distributed Maximum Power Point Tracking for Photovoltaic Systems
Farog Mohamed, Shailesh Wasti, Shahab Afshar +2
This paper proposes a novel topology for grid connected photovoltaic (PV) system based on modular multilevel converter (MMC). In this topology, a PV array is connected to capacitor…
A Novel Optimal Modulation Strategy for Modular Multilevel Converter Based HVDC Systems
Saroj Khanal, Vahid R. Disfani
Unlike conventional converters, modular multilevel converter (MMC) has a higher switching frequency -- which has direct implication on important parameters like converter loss and…
Reduced Switching-Frequency Modulation Design for Model Predictive Control Based Modular Multilevel Converters
Saroj Khanal, Vahid R. Disfani
This paper proposes a novel switching algorithm for modular multilevel converters (MMCs) that significantly reduces the switching frequency while fulfilling all control objectives…
Optimal Voltage Regulation of Unbalanced Distribution Networks with Coordination of OLTC and PV Generation
Changfu Li, Vahid Disfani, Hamed Valizadeh Haghi +1
Photovoltaic (PV) smart inverters can regulate voltage in distribution systems by modulating reactive power of PV systems. In this paper, an optimization framework for optimal coor…
Optimal OLTC Voltage Control Scheme to Enable High Solar Penetrations
Changfu Li, Vahid R. Disfani, Zachary K. Pecenak +2
High solar Photovoltaic (PV) penetration on distribution systems can cause over-voltage problems. To this end, an Optimal Tap Control (OTC) method is proposed to regulate On-Load T…
Market-Driven Energy Storage Planning for Microgrids with Renewable Energy Systems Using Stochastic Programming
Abdulelah H Habib, Vahid R. Disfani, Jan Kleissl +1
Battery Energy Storage Systems (BESS) can mitigate effects of intermittent energy production from renewable energy sources and play a critical role in peak shaving and demand charg…
Optimal Switchable Load Sizing and Scheduling for Standalone Renewable Energy Systems
Abdulelah H. Habib, Vahid R. Disfani, Jan Kleissl +1
The variability of solar energy in off-grid systems dictates the sizing of energy storage systems along with the sizing and scheduling of loads present in the off-grid system. Unfo…
Smart Inverter Impacts on California Distribution Feeders with Increasing PV Penetration: A Case Study
Zachary K. Pecenak, Jan Kleissl, Vahid Rasouli Disfani
The impacts of high PV penetration on distribution feeders have been well documented within the last decade. To mitigate these impacts, interconnection standards have been amended…
Optimization-based Residential Load Scheduling to Improve Reliability in the Distribution Grid
Abdulelah H. Habib, Elizabeth L Ratnam, Vahid R. Disfani +2
Despite the recent rapid adoption of rooftop solar PV for residential customers, islanded operation during grid outages remains elusive for most PV owners. In this paper we conside…
Quasi-dynamic Load and Battery Sizing and Scheduling for Stand-Alone Solar System Using Mixed-integer Linear Programming
Abdulelah H. Habib, Vahid R. Disfani, Jan Kleissl +1
Considering the intermittency of renewable energy systems, a sizing and scheduling model is proposed for a finite number of static electric loads. The model objective is to maximiz…
Reliability of Dynamic Load Scheduling with Solar Forecast Scenarios
Abdulelah H Habib, Zachary K Pecena, Vahid R Disfani +2
This paper presents and evaluates the performance of an optimal scheduling algorithm that selects the on/off combinations and timing of a finite set of dynamic electric loads on th…
SDP-based State Estimation of Multi-phase Active Distribution Networks using micro-PMUs
Vahid Rasouli Disfani, Mohammad Chehreghani Bozchalui, Ratnesh Sharma
Distribution system state estimation (DSSE) is an essential tool for operation of distribution networks, the results of which enables the operator to have a thorough observation of…
Dual Decomposition-Based Privacy-Preserving Multi-Horizon Utility-Community Decision Making Paradigms
Vahid. R Disfani, Zhixin Miao, Lingling Fan +1
Two types of privacy-preserving decision making paradigms for utility-community interactions for multi-horizon operation are examined in this paper. In both designs, communities wi…