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Recently, the price of photovoltaic (PV) has been reduced massively, consequently the installations of PVs and roof PVs both are increasing rapidly. Although, growing PVs are beneficial for smart grid and environment but problem is that management of PV energy is a challenge. For example, PV generator output power is very uncertain, its mainly depend on weather conditions. Besides, PVs are generating...
This paper reports the application of a hybrid metaheuristic — a combination of Particle Swarm Optimization (PSO) and Ant Colony Optimization (ACO) methods, in midscale thermal power dispatch problem with transmission losses. The hybrid technique applies ACO over output obtained by PSO to get an economic load dispatch (ELD) solution close to global optima. In the present study the hybrid technique...
This paper discusses how to achieve high PV penetrations for a hybrid diesel-PV micro-grid via the means of a cloud forecasting system. The micro-grid control system utilizes cloud forecasts to forecast PV transients and manage online diesel generation. Simulation results for the test micro-grid showed that an array size of 2 MW achieved an energy penetration of 30.8% with «11.5 annual faults. Additionally,...
Strict regulation on emissions of air pollutants imposed by the maritime authorities has led to the introduction of hybrid microgrids to the shipboard power systems (SPSs) which acts toward energy efficient ships with less pollution. A hybrid energy system can include different means of generation such as renewables (e.g., solar PV, wind power) and conventionals (e.g., diesel engines) as well as energy...
In this paper, methods of energy transformation to reduce OPEX for remote area are introduced which can be divided into efficiency improving and consumption reducing.
Telstra's telecommunication network covers a diverse area, which is subject to Australia's challenging environmental factors. These factors present challenges to the network and can prominently affect Telstra's remote sites, especially off-grid sites. This paper presents the key findings of using stationary fuel cells at these remote sites. The fuel cells implemented by Telstra are indirect methanol...
This paper proposes an Energy Management System (EMS) of the electrical plant of a yatch with a DC micro-grid structure. Such an EMS has as target function the reduction of the DE fuel consumption and correspondingly of the related polluting emission. A complete dynamic model of the electric plant of a yacht has been presented. In particular, assumed that the main electrical generator of the ship...
The high utilization and exploitation of fossil fuel have adverse environmental impacts and efforts to overcome these problems are called for. One of the options is to replace fossil fuel with palm oil which has many similar characteristics with diesel fuel. However, palm oil has higher viscosity level than diesel oil which may cause imperfect atomization in the nozzle. As a result, a heater is needed...
This paper presents comparative evaluation and explores the different technologies suitable for the implementation of the Medium Voltage Direct Current (MVDC) electrical supplies for the marine on-board electrical distribution network. To realize the MVDC supply in the range from 5 kV to 25 kV, various technological choices are available during the design process and have a direct influence on the...
Dynamic programming is an effective technique for the evaluation of the potential of optimal fuel consumption of drive trains, as it guarantees a globally optimal solution. This paper investigates two major problems associated with the application of dynamic programming. The first problem is the high computational complexity. Iterative dynamic programming is proposed as an alternative to dynamic programming...
This paper exposes a novel optimization technique named Water Cycle Algorithm (WCA) for solving Economic Dispatch (ED) problem considering practical generator constraints as Prohibited Operating Zones (POZ) and Ramp Rate Limits (RRL) for smooth and non-smooth fuel cost curve of objective function without and with valve point effect, respectively. The proposed technique is applied on three test systems...
This paper addresses design consideration on Battery Energy Storage System (BESS) sizing of Hybrid Electric Marine Vessel. Different size of BESS is simulated to assess fuel consumption of the vessel, charge/discharge peak power of the BESS, and equivalent life cycle of the BESS used. To determine power contribution between generators and BESS, a Power Management System (PMS) is designed based on...
In far-off regions without a connection to the main grid, primarily diesel generators are used for the power supply. However, hybrid energy systems such as PV-diesel-battery systems have a high potential to reduce CO2-emissions and fuel costs. As a challenge, on the one hand, smart dispatch strategies are required to compensate the limited part-load capacity of diesel generators and the volatility...
One of the main issues that still emerging as the most complex fundamental problems in power system operation is Economic dispatch (ED). This paper presents the application of Fruit Fly Optimization (FFO) algorithm technique for solving ED problem. The FFO algorithm is applied to minimize the cost of generating units by allocating the most optimum value of real power for a specific generating unit...
Economic dispatch is considered as one of the critical advancement errand and operational choice which gives a financial condition to control framework. The principle emphasis of economic dispatch is the means by which a power system network can be arranged with the goal that we have minimum cost of electric generation to take care of the load demand, while meeting all the balance and imbalance constraints...
In Morocco, the use of renewable energies present have a great importance especially with the new energy strategy. The important geographical location of the Kingdom helps for the development of the use of the solar energy. To reduce the import of primary energy, and to make face to the high demand of electricity and water in remote zone, the government has made several projects to encourage the use...
In this paper, a dynamic economic dispatch problem (DEDP) which considers the benefit function, environmental cost function and fuel cost function is studied by the distributed strategy. We propose a distributed algorithm based on undirected graphs and alternating direction method of multipliers (ADMM). Firstly, the DEDP is decomposed into three minimization steps to solve according to ADMM. Secondly,...
In this paper, we regard that reducing the total cost of ownership (TCO) is the most direct driver to the development of ICT (Information Communications Technology) power system. High efficiency, energy saving, green, sharing, intelligence and interconnection are the trends and characteristics of the future ICT power systems. Energy internet can realize the interconnection of energy, reduce redundant...
Hybrid solar / diesel / battery microgrids are being suggested as a solution to rural electrification for many developing countries, even those with existing transmission / distribution networks. One question is how to balance the sizing of the various subsystems. Energy from photovoltaic systems is now far cheaper than even the lowest fuel-only costs for diesel generators. However, solar is only...
Vehicle-to-grid (V2G) technology has drawn great interest in the recent years and its efficiency depends on scheduling of charging process of plug-in electric vehicles (PEVs) as small portable power plants in smart parking lots. On the other hand, active shift from centralized to decentralized power generation and environmental concerns have caused an increase in the utilization of combined heat and...
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