Technology and Economics of Smart Grids and Sustainable Energy
A techno-economic evaluation of regulation service of microgrid system comprising renewable energy resources and electric vehicles has been done in this paper. EV operational strategy for MG regulation is developed by incorporating a vehicle controller which enables vehicle to grid or grid to vehicle mode operation, while plugged into the power distribution circuit. The functionality of grid integration...
Analysis of the impact of communication network infrastructure performance on critical power system applications that rely on wide area synchrophasor measurements can be realistically achieved only through co-simulation of the power system and the synchrophasor communication network. In this paper, a single simulation platform, an electromagnetic transient (EMT) simulation program - PSCAD/EMTDC, was...
The Phasor Measurement Unit (PMU) is a contemporary metering device installed on system to enable the power system monitoring and control. PMUs are most accurate and advance time synchronized technology which provides measurements of voltages at the buses and also current phase values which are connected to those buses where these PMUs are located. PMU placement on each bus of a system is difficult...
The present paper presents a Cyber Physical Power System (CPPS) framework based on the Service-Oriented Architecture for proactive transmission grids control, modeling and monitoring. CPPS paradigm aims at integrating and coordinating computation, networking, and physical processes according to a holistic vision of the transmission system. The key feature of the proposed framework is the ability of...
Smart Grids offer higher level capabilities intended to meet current and future energy demands. These demands include improved performance related to concepts of reliability, resiliency, environmentally friendly generation, transmission, and distribution as well as turning consumers into prosumers. This study focused on two primary objectives: (1) to understand how the concept of risk is currently...
This paper describes a new method for high impedance fault (HIF) detection based on s-transform (ST) and pattern recognition technique. Conventional distance, over current and ground fault relays are difficult to apply for High Impedance Fault (HIF) detection in distribution line because of sensitivity, diversity, selectivity issues in case of low value of fault current. Recently, s-transform has...
Recently, self-healing power systems have evolved towards centralized instructions and control functions. This paper delineates the feasibility analysis of self-healing power systems using Multi-Agent System (MAS) with Superconducting Fault Current Limiter (SFCL). For a complex power system included various microgrid, it is conceivably doubtful to expect that centralizing the aggregate system control...
In this manuscript a novel strategy for distributed and autonomous demand-side energy management among users of a low-voltage micro-grid is developed. Its derivation is based on: a) modelling the energy consumption scheduling of the shiftable loads that belong to a given user as a noncooperative two-player game of incomplete information, in which the user itself plays against an opponent collecting...
Specialists generally agree that Distributed Energy Resources (DERs) will play a key role in the next generation power systems. Photovoltaic (PV) solar panels are very important energy conversion methods, yet they suffer from low energy conversion efficiency, availability issues and fluctuating output. Photovoltaic/Thermal (PV/T) has been introduced as a way to increase the efficiency of the system...
Glass cover is very important component for the efficient design of the solar still. Sunrays are first incident on glass cover and then transfer to the solar still for the purpose of evaporation of water to get potable water. Selection of the proper glass cover is always based on transmittance and it is depends on thickness of the glass cover. Hence, to study effect of transmittance on glass cover...
A Simple device which is used to obtain fresh water from saline water with the use of solar desalination process is known as solar still. The simple solar still give an output of 2.5 to 5 litres per 1m2 area per day during bright sunshine hours. Hence various investigation has been done by scientists and researcher to improve the performance of solar still by inspecting various design parameters(water...
Microgrids deployment is primarily envisioned to meet the energy needs of remote areas due to inaccessibility of utility power. But, due to the recent globalization epoch, the rural and remote areas in the world are merging into urban communities and creating huge burden on the utility grid. Hence, the microgrids design focus has been shifting towards urban communities. Hybrid power systems are becoming...
Integration of solar PV into the grid poses many challenges in the power system. One such serious challenge is harmonics penetration into the system. Harmonics are generated by the solar PV and the associated power electronics circuitry. Moreover, the loads connected to the distribution system are usually nonlinear and harmonic rich in nature. Therefore, a lot of harmonics gets introduced into the...
To avoid penalties on over-contract demand, electricity customers can adopt a demand response strategy to shift or reduce demands from main grid during peak periods or partial peak periods. The direct or indirect load control is a common strategy used to change operational conditions with or without incentive / contractual strategies. The time-of-use and real-time pricing in addition to incentive...
Maintenance coordination for a composite power system poses great challenges regarding the manner in which renewable resources and distributed generators can be integrated into the modern competitive power electrical system. Recently, integration of intelligent infrastructures including smart meters and 2-way communication systems increases the complexity of maintenance scheduling problem. The present...
Emerging smart grid technology is creating unique opportunity for wide applications of renewable distributed generation resources, smart appliances and plug-in electric vehicles (PEVs). This paper presents a combined online (real-time) and delayed (overnight and next day) PEV coordination scheme based on fuzzy reasoning and maximum sensitivity selections (MSS) considering wind and rooftop PV generations...
In a restructured electricity market derivative instruments help in reducing price risk. This paper proposes a portfolio optimization model considering uncertainty of electricity spot prices. Using this model, a thermal generation company (GenCo) holding contracts within and outside its jurisdiction can maximize its profit with limited risk exposure. The proposed model is formulated using mean variance...
Smart charging system of electric vehicle using cloud based monitoring and management is demonstrated in this work. xEVs (electric plugin hybrid, battery electric vehicles) Charging Management System is crucial for the dynamic demands of charging infrastructure, namely perspectives from automakers, electricity providers, vehicle owners and charging service providers. Through dedicated interface, the...
This paper presents the frequency regulation analysis of a micro-grid connected hybrid power system based on solar Photovoltaic (PV), Wind and Diesel-Engine Generator (DEG) with Superconducting Magnetic Energy Storage system (SMES) unit. Abrupt change in load demand and power fluctuations from PV and wind power source causes frequency variability in the system. In order to mitigate this issue, the...
One of the most expensive and critical component in wind turbines is the gearbox. Gearbox failure may have significant impacts on the network in terms of continuity of power supply especially in islanded areas where the majority of power demand is supplied by wind farms. As such, an effective condition monitoring technique for wind turbine gearbox should be adopted to avoid any catastrophic failure...