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Uncertainty modeling of renewable Distributed Generations (DGs) has significant impact on optimal design of microgrids. Although the conventional Monte-Carlo (MC) simulation is the most accurate method for the uncertainty modeling it is a time consuming approach. In this paper, a new approach based on MC simulation is proposed for uncertainty modeling. The proposed method has a high precision in spite...
Fault ride through (FRT) capability is one of the challenges faced in the medium to high voltage large-scale grid-tied photovoltaic power plants (PVPPs). Besides that, due to the high penetration of installed distributed generation (DG) units, the grid voltage enhancement under unbalanced faults is a requirement of several standards and grid codes. The controller of the grid-connected inverter consists...
By the help of on-line monitoring devices installed on transmission lines, the conductor temperature, environment temperature, wire current and sunshine intensity are monitored in real-time. Developing dynamic rating system can effectively and safely raise short-term transmission capacity of transmission lines to satisfy the demands for power supply under emergency state of power grid. In this paper,...
This paper addresses the siting and sizing of electric vehicle (EV) charging stations in the distribution system as a multi-objective optimization problem. The minimization of total real power loss and total voltage deviation are considered as the objective functions of the problem. An algorithm based on integration of Non-dominated Sorting Genetic Algorithm II (NSGA-II) with Gauss-Seidel load flow...
This paper proposes a power balancing strategy for dispatchable and non-dispatchable sources in an islanded microgrid. This control method enables energy storage system that employs a voltage-band at a dc busbar to maintain grid voltage stability for short period disturbances in a network. This voltage-band, applied to obtain maximum benefit from the storage system, depends on a storage capacity feature...
The work aims to the solution of a problem of power flows control in smart grid of a low voltage. The article deals with the new scientific and technological solutions, developed by the authors, which help create Automatic Power Flow Control Stations (APFCS) in power distribution networks with the voltage of 0.4 kV. The description of a design of the power flow control device (PFCD) is provided. The...
To control power flow for multi-terminal high voltage DC (MTDC) grids, the transformations of synchronous reference frames highly relies on the knowledge of the amplitude, phase-angle, and frequency offset of the grid voltage's positive and negative sequence components especially under grid fault conditions. Therefore rapid and accurate detection of the above information are more significant. The...
With the more advanced technology and decreased cost of batteries, it is less costly to form large-scale battery energy storage systems (BESSs) to take part in grid applications. BESSs are increasingly considered as participants for grid regulation services because of their fast responding ability. This paper reviews various control schemes of the BESSs in the literature. Sizing studies are conducted...
This paper explores the benefits of forming a coalition of a number of nanogrids in a smart community when they assist by supplying their energy surplus to a shared facility controller (SFC). In this context, a canonical coalition game (CCG) is studied, in which a number of nanogrids, such as households, form a grand coalition in order to supply a contracted amount of energy to the SFC with a view...
The integration of a great deal of intermittent renewable generation in future grids will require more operational flexibility. Residential demand response can provide the load shaping potentials thereby alleviating the need for operational flexibility. This paper intends to develop a centralized framework focusing on realization of domestic heating, ventilation, and air conditioning (HVAC) demand...
The penetration of wind generation in distribution networks is steadily increasing and may provide ample business opportunities for aggregators. While, residential demand response (DR) has proven to be a feasible economic tool in smart grids, the quantitative evaluation of various aggregator-based DR services is required to tap the maximum benefits from the DR flexibility. This paper provides an overview...
This paper demonstrates the Field Programmable Gate Arrays (FPGAs) of design methodologies with a focus on motor drive applications. Motor is the heart of many industrial automation and motion/drive control applications, but major problem arise in controlling the speed of the motor. Brushless DC (BLDC) motor is new and reliable motor because it has high efficiency, high torque to power ratio, lower...
The number of autonomous microgrids (MGs) which are difficult to connect with the main gird is increasing, especially for those on islands or isolated areas. It is helpful to optimize the operation and utilization of resource in different space and time by interconnecting nearby MGs together. A method of jointly optimization and distributed control for interconnected operation of autonomous MGs is...
The techno-economic studies of distributed energy resources in the low-voltage (LV) distribution networks are mostly simulated on a few typical LV feeders, so the scalability issue of modeling and simulating a large part of LV networks in a large city is discussed. The proposed generic modeling framework has been implemented on a practical utility-scale LV network considering the LV network characteristics...
The penetration of distributed energy resources in distribution networks leads to the decentralisation of the power generation. This is contrary to the traditional centralized power generation where the power is fed from transmission systems. To cope with the impact of the decentralised power generation, clustering power systems approach (CPSA) is proposed. It is an approach that coexists operations...
In smart grid, demand side management (DSM) became increasingly important to improve the energy efficiency. It requires sophisticated real-time embedded control systems to manage distributed energy resources. These network-connected systems will be exposed to wide range of security threats when incorporating information and communication technologies. Securing embedded systems has unique resource...
In recent years, enormous work has been done for adding smartness and intelligence to the conventional power system. Visualization techniques form a crucial part of this paradigm. There is a need to link the analytical data from the power system to the visualization tools. This paper presents a system for analyzing the visualization technique, GIS (Geographical Information System) for displaying the...
This paper proposes an optimal dispatch strategy of hybrid power generation with battery energy storage system (BESS) for an islanding operation of Mae Hong Son (MHS). MHS is located in the far west mountain valley and there is plenty of renewable resources. Fault often occurs on the transmission line which supplies power to MHS. Therefore, it is a challenge to manage MHS as microgrids. The power...
In this paper, micro pumped storage (PS) is used for energy storage system (ESS) for the islands with different altitude, and demand-side is treat as a kind of possible power supply which can actively participate in the planning and operation in microgrid. A capacity configuration optimization model is proposed with the consideration of demand response (DR) in island microgrid, and the particle swarm...
Over the decades, growing attention on Smart Grid and its associated technologies can be seen. The aim of this project was to create a Centre of Excellence facility for experimental integration and showcasing of projects undertaken by Newcastle University International Singapore (NUIS) students. As the first step, a fabricated table-top demonstration unit called SynergizeOne was designed, developed...
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