Mohammad Reza Hatami
Volume 09, Issue 02 , June 2020, , Pages 53-57
Abstract
In this paper, different methods of wavelet coefficients have been used to detect power quality in smart power grids and have investigated the advantages and disadvantages of continuous and discrete wavelet transforms in detection and performance of different mother wavelets in detecting different types. ...
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In this paper, different methods of wavelet coefficients have been used to detect power quality in smart power grids and have investigated the advantages and disadvantages of continuous and discrete wavelet transforms in detection and performance of different mother wavelets in detecting different types. The perturbations are investigated by discrete wavelet transform. Also, in analyzing the power quality of smart grids, the type of disturbance in voltage or current signals is discussed.
Ava Alamatsaz; Mohammad Esmaeil Nazari
Volume 08, Issue 01 , March 2019, , Pages 1-7
Abstract
A host of technologies has been developed to achieve these aims of the smart grid. Some of these technologies include plug-in electric vehicle, demand response program, energy storage system and renewable distributed generation. However, the integration of the smart grid technologies in the power system ...
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A host of technologies has been developed to achieve these aims of the smart grid. Some of these technologies include plug-in electric vehicle, demand response program, energy storage system and renewable distributed generation. However, the integration of the smart grid technologies in the power system operation studies such as economic emission unit commitment problem causes two major challenges. Pumped storage unit with the capability of storing energy can provide spinning reserve and consequently decrease total cost and environmental emission. The goal of this study is to develop and examine a hybrid GA-heuristic and deterministic optimization algorithm for solving the UC problem for a smart grid with considerations for pumped storage as an energy storage system. Simulation results show improvements in total cost and environmental emission by 1.27 and 4.09%, respectively.
Sevda Allahyari; Shahram Javadi
Volume 05, Issue 01 , February 2016, , Pages 5-9
Abstract
As there is a rapid growth both in the number of power consumers and also the limitations energy resources, it is clearly accepted that the old version of power grid must change into smart grid from head to toe. One of the most important advantages of smart grid which makes it much more exclusive rather ...
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As there is a rapid growth both in the number of power consumers and also the limitations energy resources, it is clearly accepted that the old version of power grid must change into smart grid from head to toe. One of the most important advantages of smart grid which makes it much more exclusive rather than other typical systems is the two-way connectivity between the utility and the costumers. Taking energy efficiency programs for domestic consumers which are considered with the most important role in raising the rate of energy consumption of all, is accepted as an applicable techniques of demand-side management. In this thesis an identical frequency method control of the electrical motor of an air-conditioner (AC) system based on Fuzzy-PID controller is proposed in order to maximizing energy efficiency. Referring to the statistics which are published about the rate of energy consumption of AC systems would have the highest role in demand response and the two-way cooperation between the utility and costumers. To evaluate the results much more applicable, the proposed method is simulated with MATLAB software and the results have shown that the system have the great success.
Maryam Sadat Mahdaviyani; Mehrdad Javadi
Volume 01, Issue 02 , June 2012, , Pages 89-94
Abstract
existed electricity grids deliver produced power to the consumer passing through transmission and distribution grids. According to high losses of these grids in transmission level and inexistence of bilateral interaction for simultaneous information exchange, a concept of smart grids were made by capabilities ...
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existed electricity grids deliver produced power to the consumer passing through transmission and distribution grids. According to high losses of these grids in transmission level and inexistence of bilateral interaction for simultaneous information exchange, a concept of smart grids were made by capabilities such as consciously participation of consumers in the smart electricity grids, an amount of energy saving, monitoring and automation of electricity grids. These grids give necessary information about the cost of power consumption to the users and it is possible that subscribers change their consumption power amount based on a balance between requested power and electricity grid. Since smart home in a form of environment where all control systems were designed in a pre-defined logical framework, so it can be introduced as a solution to reduce energy consumption through controlling equipment based on function schedule charts. In this paper, an approach has been presented to optimize energy consumption which decision maker model is designed in order to reduce cost and to increase user utility. Indeed designed home energy management system select optimum duration about how to use the equipment by using fuzzy modelling
Hassan Monsef; Pouyan Khajavi
Volume 01, Issue 01 , March 2012, , Pages 33-43
Abstract
Reaching an electricity system which is both economically efficient and environmentally friendly is motivating countries to
design and execute different types of TOU demand response programs. But there are certain deficiencies which prevent these
programs to effectively modify the load shape. Smart ...
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Reaching an electricity system which is both economically efficient and environmentally friendly is motivating countries to
design and execute different types of TOU demand response programs. But there are certain deficiencies which prevent these
programs to effectively modify the load shape. Smart grid as a means could help the electricity system to reach the highest
demand side management goals which are inaccessible through today’s methods. In this paper, problems facing today’s demand
response programs have been described and Iran’s recently designed TOU program has been analyzed as an example. The
influence of this program has been simulated on Iran’s actual load curve. As a solution to the problems facing DR programs,
Smart Grid has been introduced and the influence of Real Time Pricing (RTP) program in Smart Grid has been simulated on an
actual load curve of Iran’s grid, using multi period load model and adaptive periods. Reaching market equilibrium and the effect
of Smart Grid on price curve has also been simulated. Finally, the current TOU program designed for Iran and the RTP program
in smart grid have been compared with respect to load shape modification, load factor, price curve, and production cost.
Eventually, savings made possible through smart grid per day have been evaluated.
