The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper considers the power sharing problem for a grid-connected AC microgrid consisting of multiple dispatchable distributed generators. The microgrid is modeled as a multi-agent system and the power sharing problem is formulated as an interconnected leader-following consensus problem in the sense that the leader is affected by the fol- lowers passively. To solve this interconnected leader-following...
Microgrids define a new paradigm in the smart grid concept for distributed energy resources integration. As one of the key enabling components of the smart grid, microgrids can operate independently of or in parallel with the utility grid. Since most of the distributed resources are renewable energy based, the dynamics of the system change due to their unpredictable and intermittent nature. Accordingly,...
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...
Microgrid is becoming one of the popular architectures for accommodation of distributed energy sources into conventional distribution network. A microgrid structure consists of various renewable energy sources which includes non linear solid state devices for interfacing. Presence of non-linear components in distribution network may change the behavior of main utility grid both under steady and transient...
Non-consistency of energy availability from Renewable Energy Sources needs estimation and scheduling in advance so that the other certain sources of energy like fuel cells, diesel generators, storage devices etc., can be scheduled appropriately to maintain load-generation balance in real time. Evolutionary program techniques are proving handy and reliable in the process. This article uses an Artificial...
The power developed by the solar microgrid is not constant for a particular year, it depends upon the weather conditions around the year of the specific location where the solar microgrid is operating. It is however necessary to estimate the annual average power developed by the particular microgrid before physically installing microgrid at that location. The programming based model of the photovoltaic...
The higher penetration of Non Dispatchable Energy Sources inspite of its many obvious benefits may cause system stability into jeopardize. Also its ability to increase system reliability needs to be examined due to its inherent intermittency. This problem can be overcome by using a mix of renewable energy sources and also the use of storage units. A Microgrid consisting of wind and PV connected to...
This work is associated with the renewable energy based microgrid for a standalone operation. The places where the renewable energy sources such as wind, solar, hydro etc. are in abundance can be used to generate electricity by developing microgrid (MG) such as wind- hydro MG. A synchronous reluctance generator (SyRG) is used as a constant speed hydro turbine and a permanent magnet brushless DC generator...
This paper deals with a standalone microgrid system using a generalized filter based control technique for VF (Voltage and Frequency) control and improving power quality. This microgrid system consists of a SPV (Solar Photovoltaic) array, diesel driven self-excited induction generator (SEIG) and a storage system (Lead-Acid Battery). This control approach is used for generating the reference source...
It is now well established that renewable energy sources (RESs) and distributed generation system (DGs) are there to play major role to meet out the electrical energy needs of the world. The RESs are being utilized for electrical power generation at small levels by way of forming microgrid (MG). But because of the uncertainties involved due to unpredictable weather conditions, the power generated...
Energy management system (EMS) plays a crucial role in Microgrids. It is responsible for the power balance between generation and consumption. Different architectures for EMS are possible: the centralized, decentralized and hierarchical. The hierarchical is a good candidate to smooth the transition from the existing power management system to the Microgrid (MG) management configuration. Besides, multiagent...
The Brazilian Amazon is located in the Northern region of Brazil with rich and unused resources. In spite of the availability of the sources, the region has been characterized with the lack of electricity and, consequently, has a higher level of poverty in the country. Reasons include very low rural electrification, low electricity demand, topographical difficulties, dispersed communities, and small...
In this paper, multi-agent architecture was used to provide control for standalone microgrid with distributed generations. Therefore, to achieve a faster control compared to the centralized controller, each agent incorporated with a local prediction or forecasting model to provide anticipatory responses. To accomplish their common goals successfully, the agents cooperated based on facilitator architecture...
In the recent years, microgrids have become increasingly popular among the consumers due to its energy efficient mechanism, network benefits and improved energy reliability. However, when they are operated as autonomous systems, several technical problems related with its operations and control has emerged as a challenge. To overcome this impending issue, this paper proposes an optimized approach...
This paper presents a distributed voltage unbalance compensation method for an islanded microgrid (MG) system. By using hierarchical control concept, we design a distributed compensation scheme in the secondary control layer, while the traditional inverter control methods including voltage and current PR control, droop control, virtual impedance are implemented in the primary layer. Different from...
Communication networks are increasingly applied in smart grid for information exchange and optimal operation. This paper presents an optimal active power control strategy for islanded microgrid in the presence of communication delays. The control strategies are fully distributed. The impact of the diverse communication delays and the effectiveness of the algorithm are analyzed by using the Generalized...
The faults in a microgrid (MG) pose many challenges for operation of the system. They may lead to an increase in the operation cost. In this paper, in order to solve the problem, a novel algorithm based on the auto-configuration of MGs is proposed for minimizing the operation cost in grid-connected mode. A centralized energy management system (EMS) is also developed in accordance with the proposed...
Dynamic engineering-economic models for real-time energy market was proposed. Dynamic connection between profit, price and energy power was shown. Power generator in the proposed model oriented for received of profit and its maximization.
In this paper, a novel algorithm is proposed for optimal operation of microgrids considering the occurrence of faults or recovery from faults, auto-configuration. The objective of the proposed algorithm is to minimize the operation of the microgrid while ensuring stability. The auto-configuration is defined as the capability of the system to update the status of all components and reschedule healthy...
Supply deficiency is a common problem in the Philippines especially in places where connecting to the main grid is not possible, and implementing a standalone microgrid is the proposed solution. However, due to the intermittent output of some renewable distributed generations (DG), it is desired to have a modeling tool that can forecast possible outcomes and effects of these distributed resources...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.