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 presents a new approach for generation source management in a dc microgrid, which uses a hybrid isochronous-droop (HID) control strategy to overcome the inherent drawbacks of traditional droop control and achieve a performance more towards that which can be achieved by communication-based distributed or centralized control schemes. In particular, the approach allows the number of dc sources...
The emerging potential of distributed generation (DG) is feasible to be conducted through microgrids implementation. A microgrid is a portion of the electrical system which views generation and associated loads as a subsystem, with the ability to operate both grid connected or islanded from grid, thus maintaining a high level of service and reliability. The existing grid infrastructure, the distributed...
In microgrid, the traditional centralized control strategy is a convenient way to realize system control and schedule, but it is completely dependent on communication which reduces the reliability of system, and plug and play is difficult to be realized for the distributed generator (DG). In order to overcome these challenges, this paper proposes a distributed control strategy based on multi-agent...
This paper presents a method to shed off the least important loads in a microgrid operated at constant frequency under the contingency of inadequate power generation. Different from conventional frequency deviation based load shedding, this paper discusses in detail how to shed off load based on the voltage deviation. The key issue is to differentiate whether the voltage deviation is due to sudden...
There is a lot of conversation about microgrids and how they are the future. This seems to be a truth based upon the ever-increasing deployment of DER worldwide. And when the microgrids are described they are typically shown as a self-healing network with a topography that creates a loop of some kind. This might be a great design for new feeder installations, but it would probably mean a lot of additional...
The energy crisis and environmental concern lead to widely use of renewable energy sources in form of microgrid. The intermittent nature of the microgrid's sources and the altering behaviors of loads result to unstable of the system's voltage and frequency as well as the system reliability. The purpose of this paper is to develop real-time control based decentralizing technique for handling the challenging...
This paper presents a study about optimization in microgrid with energy storage. The development of technology makes it possible for energy storage utilization as solution for energy management problem due to renewable integration. The ability of energy storage to store and supply power can be used to solve intermittency problem of renewable energy. Furthermore, the possibility of energy storage integration...
In this paper, we propose a frequency-based autonomous control strategy for an isolated microgrid with the grid-forming energy storage system (ESS) in the South Korean island of Geocha. This strategy uses a system frequency as a global data signal using a grid-forming ESS. The distributed generation (DG) units in the microgrid use the frequency as a control signal without communication because the...
In last ten years many developed and developing countries move towards green power. Most of them installed green power like wind generator and solar cell with storage device at distribution level. Interconnecting and facilitating the distribution power system with advanced control, communication and information technology is challenging task. The aim of Integrating Green Power Generators in microgrid...
Fractional order control theories have attracted increasing attentions recently due to their better control performance than traditional integer-order controllers, but there are few research works concerning their applications of power systems and power converters. This paper presents a novel binary-coded extremal optimization (BCEO) based fractional-order frequency control method for an islanded...
In this paper, control and operation of a microgrid having inverter based solar photovoltaic (PV) and diesel engine is presented. The microgrid is designed to meet rural applications. In the proposed microgrid, a water pumping system is considered as a dump load for ensuring economic operation of microgrid. Three scenarios i.e fully loaded, partially loaded and lightly loaded are considered to evaluate...
The paper addresses the possibilities of application of discrete Short-time Fourier transform (STFT) and Fast Fourier transform (FFT) for detection of voltage dips in the distribution grid with high level of distributed generation in the concept of the future smart grids. Modelling and testing are carried out in the MATLAB/SimPowerSystems environment. Modified IEEE13 bus system with high level of...
This paper presents research power losses analysis in Mae Sariang microgrid system (MGs) by installing distribution generators (DGs). The studied case is located in Mae Sariang district, Mae Hong Son province which is a remote area. The main grid cannot supply sufficient active power to high consumption load in the system because there are high power losses occur in 22 kV transmission lines. This...
This paper deals with a voltage disturbance generator output characteristics. Usually a microgrid is connected to utility grid through STS to disconnect in case of fault occurrence. The STS should be opened in case of outage, however, it may be connected in case of voltage sag occurrence. The magnitude of surge or over current through the STS is determined by the dip of the sag. The voltage disturbance...
A Microgrid (MG) has a major role in power system. Because of its numerous benefits, such as its ability to reduce environmental impact and enhance the reliability of a power system. Hence, Multi-MG (MMG) consisted of multiple MGs is being studied intensively. This paper proposes the optimal power exchange of MMG with hierarchical coordination. The whole system architecture consists of two layers:...
This paper discusses a practical implementation of a microgrid based on a bipolar DC bus. The microgrid demonstrates the flexible, modular, and easily scalable microgrid management concept developed by ARDA Power under the real conditions of an industrial facility in Ontario, Canada.
The development of a rapidly deployable modular electric generator based on plug-in hybrid vehicle DC architectures provides a highly reliable DC microgrid for use in applications with unstable infrastructure or highly sensitive loads. The result is the commercial production of early stage prototype units built by Schneider Electric with onboard energy storage, combustion generator and rapid interconnects...
This work presents a layout design method for a grid-connected PV-Battery-Diesel microgrid considering the effect of the applied power management strategy among the system's components. The proposed microgrid is dedicated to those areas in the world which suffer from prolonged grid outages and depend mainly on diesel generators to cover the periods of power deficit. Conventionally, such hybrid microgrids...
The paper describes a fully-dispatchable microgrid architecture that features i) the adoption of a master/slave power-based control in the central dispatcher to drive distributed power generators and ii) the connection of a suitable power converter equipped with energy storage, called Utility Interface, at the point of common coupling with the mains. Property i) ensures scalability and capability...
Autonomous microgrid planning is a Mixed-Integer Non Convex decision problem that requires to consider investments in both distribution and generation capacity and represents significant computation challenges. We proposed in a previous publication a deterministic Second-Order Cone (SOC) relaxation of this problem that made it computationally tractable for real-size cases. However, this problem is...
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.