arXiv subjects

Hany Farag

Publications and source records attributed to Hany Farag.

3 recordsLinked to original sources

arXiv2023

Field Testing of Residential Bidirectional Electric Vehicle Charger for Power System Applications

Bidirectional electric vehicle (EV) charging is a technology that is gaining rapid popularity due to its ability to provide economic and environmental benefits to both EV owners and power system operators (PSOs). Using the EV as a flexible source of energy, an EV owner can provide power to homes/buildings, or even participate in grid services such as demand response and frequency regulation. However, there is a lack of real-world testing and validation for bidirectional charging technology, particularly in the residential segment. As such, this paper presents real-world field testing of a bidirectional EV charger deployed in a home. Control software is developed to dispatch the EV according to static setpoints, as well as automated load following, and its accuracy and responsiveness is reported on. The results of the testing with the charger and 2019 Nissan Leaf combination indicates a responsiveness of 6-8 seconds and accuracy of over 99%, which suggests feasible participation for applications such as load following, arbitrage, and demand response.

eess.SY↗

arXiv2019

Blockchain Based Transactive Energy Systems for Voltage Regulation

Transactive Energy Systems (TES) are modern mechanisms in electric power systems that allow disparate control agents to utilize distributed generation units (DGs) to engage in energy transactions and provide ancillary services to the grid. Although voltage regulation is a crucial ancillary service within active distribution networks (ADNs), previous work has not adequately explored how this service can be offered in terms of its incentivization, contract auditability and enforcement. Blockchain technology shows promise in being a key enabler of TES, allowing agents to engage in trustless, persistent transactions that are both enforceable and auditable. To that end, this paper proposes a blockchain based TES that enables agents to receive incentives for providing voltage regulation services by i) maintaining an auditable reputation rating for each agent that is increased proportionately with each mitigation of a voltage violation, ii) utilizing smart contracts to enforce the validity of each transaction and penalize reputation ratings in case of a mitigation failure and iii) automating the negotiation and bidding of agent services by implementing the contract net protocol (CNP) as a smart contract. Experimental results on both simulated and real-world ADNs are executed to demonstrate the efficacy of the proposed system.

cs.CR↗

arXiv2019

Design and Field Implementation of Blockchain Based Renewable Energy Trading in Residential Communities

This paper proposes a peer to peer (P2P), blockchain based energy trading market platform for residential communities with the objective of reducing overall community peak demand and household electricity bills. Smart homes within the community place energy bids for its available distributed energy resources (DERs) for each discrete trading period during a day, and a double auction mechanism is used to clear the market and compute the market clearing price (MCP). The marketplace is implemented on a permissioned blockchain infrastructure, where bids are stored to the immutable ledger and smart contracts are used to implement the MCP calculation and award service contracts to all winning bids. Utilizing the blockchain obviates the need for a trusted, centralized auctioneer, and eliminates vulnerability to a single point of failure. Simulation results show that the platform enables a community peak demand reduction of 46%, as well as a weekly savings of 6%. The platform is also tested at a real-world Canadian microgrid using the Hyperledger Fabric blockchain framework, to show the end to end connectivity of smart home DERs to the platform.

eess.SY↗