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This paper presents a framework to determine the optimal siting and sizing of Wind-based distributed generators (WDGs) and energy storage systems (ESSs) in a micro-grid (MG), considering the total active power losses in the system, the self-adequacy index (SAI), and the total annual cost (TAC) of the WDGs and the ESSs. The work in this paper employs multi-objective optimization (MOO) based on archived...
This paper investigates the impact of demand response (DR) management on improving the social welfare of remote communities by integrating renewable energy (RE) resources into their diesel generator-based isolated microgrids. A multiple-year planning optimization problem is developed to determine the optimal combination of RE resources and energy storage system (ESS) while considering demand response...
In this paper, a smart integrated adaptive centralized controller is proposed for monitoring and controlling integrated renewable energy sources (RESs), both for intentional and unintentional islanding modes of operation for microgrids, as well as, for a variable range of transient load shedding and fault scenarios corresponding to electrical power system outages. It is demonstrated that the proposed...
This paper investigates the motivations for energy storage solutions for offshore Wave Energy Converters (WEC) and tidal energy prototypes. It examines the power and energy storage solutions on offer for developers to aid them during the design stage. Energy storage solutions examined include lead acid batteries, lithium ion batteries, supercapacitors, lithium ion capacitors and diesel for diesel...
One of the targets for operational control of DC microgrid is to guarantee the DC bus voltage constant. Considering DC microgrid on both grid-connected and islanding operating conditions, DC bus voltage control strategy was proposed based on ac power grid and energy storage systems. Through the reasonable design of external voltage loop and internal current loop control parameters for the both AC-DC...
This paper presents an intelligent home energy management system integrated with dispatchable loads (e.g., clothes washers and dryers), distributed renewable generators (e.g., roof-top solar panels), and distributed energy storage devices (e.g., plug-in electric vehicles). The overall goal is to reduce the total operating costs and the carbon emissions for a future residential house, while satisfying...
Air scroll expanders are increasingly used in energy recovery systems, such as Organic Rankine Cycles (ORC) and compressed air exhaust recovery, and in small scale Compressed Air Energy Storage (CAES) systems. Most of these systems use waste high pressure fluid to drive the expander, which in turn provides mechanical energy directly, or drives a generator. The purpose of this work is to investigate...
In a power system network, the system power needs are met by all the generating stations working in coordination. When there are many power generating units, a lot many operating strategies are possible to meet the time based varying power demand. In this paper, an optimization study is carried out to checkout the cost effectiveness of using a deloaded photovoltaic (PV) instead of battery. The three...
The ever-growing connection of distributed renewable generators is causing important modifications of the standard power flows and is increasingly challenging the operation of the electrical distribution network. In this light, electrical storage systems (ESS) will be key attributes for future grids that accommodate massive penetration of renewable plants. In this paper, the possibility to consider...
This paper investigates the energy management problem for multiple self-interested users, each with renewable energy generation as well as both the fixed and controllable loads, that all share a common energy storage system (ESS). The self-interested users are willing to sell/buy energy to/from the shared ESS if they can achieve lower energy costs compared to the case of no energy trading while preserving...
This paper presents, the importance of pump storage system for continuous and reliable supply without any loss of load has been determined. Two different case studies have been analyzed using present approach. The first case includes without pump storage and second case is with storage green energy microgrid. The optimal capacity of the pump storage has also been determined. The present approach has...
This paper presents results from case studies of the future power systems in Morocco and Egypt, with a high increase in renewable generation capacity. Datasets representing 2030 scenarios have been generated and studied with a simplified grid-market model that takes into account variable renewable generation, energy storage and electricity grid constraints. Simulation results for Morocco and Egypt...
Nowadays, wind energy has become a very viable alternative solution to provide electrical energy. The development of wind energy is especially relevant for the case of isolated island in the south central provinces of Vietnam, where there is great potential for wind energy. For these isolated systems, the co-generation of diesel generators and wind turbines is a common configuration, but also poses...
As Photovoltaic (PV) penetration level rapidly increases in the modern power systems, the adoption of energy storage systems (ESS) is a preferred option to control the rapid and unpredictable PV power fluctuations. It is desired to develop new reliability evaluation methods that can model and evaluate the reliability impact of these new entries. This paper has proposed an area risk based method that...
This paper proposes a new method for evaluating Effective Load Carrying Capability(ELCC) and Capacity Credit(C.C.) of power system including Wind Turbine Generator(WTG) combined with Battery Energy Storage System(BESS). WTG can only generate electricity power when the fuel(wind) is available. Because of fluctuation of wind speed, WTG generates intermittent power. In view point of reliability of power...
Due to the increasing integration of renewable resources and the deployment of energy storage units at the power distribution level, conventional deterministic approaches may not be suitable or effective for evaluating the reliability of active distribution networks anymore. This paper proposes a new method to evaluate the active distribution system reliability including microgrid and energy storage...
This paper introduces two novel metrics to judge the capability and influence of wind power to provide virtual inertia response (i.e. frequency support). The first metric considers the generation unit (i.e. wind turbine generator (WTG)/wind farm (WF) vs. synchronous generator). This metric is applied to compare between three different methods of provision of frequency support. The second metric assess...
This paper addresses the issue of selecting architecture of smart grid that can be used so as to test applications and uses cases related to services. Most existing architectures are based on the NIST conceptual model that defines seven high-level domains (Bulk Generation, Transmission, Distribution, Customers, Operations, Markets and Service Providers), which is not suitable with recent progress...
Energy storage systems may represent a viable solution to tackle over- and undervoltages arising in low voltage networks due to the increasing penetration of low carbon technologies. An algorithm for siting and sizing energy storage systems in radial low voltage networks was proposed in previous work. Siting exploits the voltage sensitivity matrix of the network, while sizing is performed by solving...
Due to the high penetration of Distributed Generations (DGs) in the network and the presently involving competition in all electrical energy markets, Virtual Power Plant (VPP) as a new concept has come into view, with the intention of dealing with the increasing number of DGs in the system and handling effectively the competition in the electricity markets. This paper reviews the VPP in terms of components...
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