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This paper presents a study about the influence of Distributed Energy Resources' (DER) flexibility on the operation of a Medium Voltage (MV) network, in a Smart Grid (SG) environment. An AC multi-temporal Optimal Power Flow (OPF) tool was developed and used to simulate the impact of the DER flexibility (including storage devices, EVs, controllable loads and micro-generation) in distribution network...
Singapore looks forward to become a smart nation. Working towards smart nation and smart grid, smart homes are the fundamental building units of power distribution system. Smart home can have photovoltaic system and storage system together with electrical vehicles. This paper presents modeling and simulation of smart home energy management system on LabVolt Home Energy Production Training System....
Microgrids for electricity provision have an important role to play in achieving current international targets of electrifying poor rural communities around the world. In the East-African context, microgrid developers face challenges related to dispersed settlement patterns and high poverty levels that prevent many rural citizens from affording grid connection. Contextual factors influence demand...
A fuzzy based energy management unit (FBEMU) for a renewable energy system (RES) is introduced in this paper. The RES includes solar PV panel and fuel cell stack as renewable sources and Battery and hydrogen tank as storage devices. A multi-port dc-dc converter is employed to integrate the renewable energies and supply the residential load via an inverter. The proposed system is able to operate in...
The worldwide development of photovoltaics (PV) has already caused over-voltage and backflow-overload issues during middays in low voltage (LV) networks. On the other hand new environment-friendly technologies such as electric vehicles (EV) and heat pumps (HP) are supposed to introduce under-voltage and line overload issues in the evening. Distributed storage (DST) is considered as one of the key...
This paper presents an innovative solution based on distributed model predictive controllers to integrate the control and management of energy consumption, energy storage, PV and wind generation at customer side. The overall goal is to enable an advanced prosumer to auto-produce part of the energy he needs with renewable sources and, at the same time, to optimally exploit the thermal and electrical...
Buildings account for about 40% of total energy consumption. Efficient building energy control can considerably reduce energy costs. A smart grid takes advantage of bi-directional energy and information flow between the utility grid and the energy user. Smart buildings can charge or discharge energy or power from multiple buildings (multi-agent systems) using smart meters via battery storage in the...
Several techniques of control require a linear mathematical model in order to get an inverse dynamic solution. However, in more complex systems the linearization is not enough to solve the problem. A new class of systems called ??flatness systems?? that allows the entire description of the state's trajectories, and so to improve the dynamic response of those systems. This paper introduces a simulation...
In this paper, the authors analyze the impact of the participation of customers to the sustainable implementation of energy rational strategies in microgrids. The management of shiftable loads is compared to the control of real and reactive storage systems in smart grids. An optimization algorithm is used as analysis tool to assess the impact of such control variables in different conditions. The...
The interest in the development towards intelligent microgrids which use renewable energy as primary sources has significantly increased in the last two years. The present paper examines and proposes a new digital control solution for bidirectional DC-DC converters. In order to control the converter in both directions the novel algorithm uses the current that charges and discharges the storage devices...
It has been estimated that, there will be one million Plug-In Hybrid Electric Vehicles (PHEVs) by the end of this decade. There is a growing risk that, this proliferation in the number of PHEVs will trigger extreme surges in demand while charging them during rush hours. To mitigate this impact, a unique charging station architecture is proposed in which the rate of charging of the PHEVs is controlled...
Coordinated charging of Plug-In Electric Vehicles (PEVs) in residential distribution systems is a new concept currently being explored in the wake of smart grids. Utilities are exploring these options as there are concerns about potential stresses and network congestions that may occur with random and uncoordinated multiple domestic PEV charging activities. Such operations may lead to degraded power...
The performance of distribution transformers serving several residential networks with multiple Plug-In Electric Vehicle (PEV) charging activity is studied in this paper. Distribution transformers are the weakest link in distribution systems that could soon be subjected to increasing stresses from PEV charging activity. This could significantly impact the reliability, security, efficiency and economy...
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