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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 environmental footprint of ships is on the highlights of the maritime industry to make it moves to a greener future. Recently, European regulation starts to be more severe with the monitoring, reporting and verification of CO2 emissions from large ships using that are using EU ports. The use of fossil fuels to generate power to ships is in check and the innovations in the maritime industry are...
Typical microgrid configurations include small-scale generation units that belong to the class of reciprocating engines (gas, diesel, heavy fuel oil). A simplified equivalent model for representing the frequency response of a given set of this kind of generators is proposed in this paper. The model parameters are tuned to obtain frequency responses compliant with the performance classes stated by...
The fear of fuel depletion necessities the integration of energy saving methodologies for electric power generation. Diesel engines are common for back-up/standby electric power generation units. Being compression-ignition based, in contrary to gasoline engines, the enrichment of the air intake of diesel engines with Hydrogen improves the fuel burning process, leading to better fuel consumption. Wet/dry...
Optimal power flow (OPF) and security-constrained OPF (SCOPF) studies are important tools for both planning and operation of power supply systems. Conventional gradient-based SCOPF methods are commonly used for that purpose, but when analysed system is overstressed with severe multiple contingencies, conventional SCOPF methods may fail to converge. In such cases, meta-heuristic SCOPF methods can be...
This paper investigates the dispatch of diesel generators in Kinmen Island power system with wind power generators. Because wind conditions are somewhat unpredictable, it is difficult to provide a stable base load of power to the grid from wind energy. To ensure an adequate supply of energy at all times, wind energy needs to be combined with other sources. To know the dynamic behavior of the system,...
Diesel Engine Generators (DEGs) are used to generate power but in the process produce emissions of toxic air pollutants (taps). These ‘taps’ include Particulate Matter (PM) and Oxides of Nitrogen (NOx) which are harmful to humans and the environment. This paper has investigated the effect of retrofitting a 15kVA DEG using Retrofitted Diesel Fuel (RDF) and Pure Diesel Fuel (PDF). The data obtained...
In this paper, we evaluate a multi-objective-moving-horizon-optimization (MO-MHO) approach as an instrument for improvement of economic dispatch in microgrids. In particular, we investigate the effect of adaptation of the multi-objective optimization strategy used in the moving horizon framework on the end result of the economic dispatch. Power dispatch in microgrids is inherently a high-dimensional...
This paper presents a data analysis of an islanded diesel-PV-battery system, placed in Somalia. Operation of each generator is observed, concerning the most relevant performance indicators. Analysis is carried out during the first 11 months of operation, from November 2015 to September 2016. Investigations are divided into two periods, according to a significant load variation due to the connection...
In this paper, optimal scheduling and energy management concepts are used to demonstrate the operational cost saving achievable using multiple paralleled diesel generators over a “Single” diesel generator unit for supplying small loads not connected to the grid. These two supply options are modelled and simulated using Matlab. From the two case studies undertaken, the simulation results show that...
The need for designing self-sufficient microgrids to lessen the serious consequences due to power lack is obvious. This work proposes a systematic method to select the optimal components of a grid-connected microgrid subject to severe power outages. The microgrid is composed of photovoltaic panels (PV) and energy storage units in addition to the existing diesel generator. This work attempts to maximize...
The article describes technical solutions improving ecological and resource-consumption properties of the autonomous power supply systems of mobile base stations based on renewable energy sources, while ensuring the required reliability and security of power supply. These include replacement of the diesel-generator with clean energy source — an electrochemical generator based on hydrogen fuel cells,...
A method of operating gas turbine generator by mixing air with the cooled recirculating combustion gases, compressing of fuel and air mixture at the cooled recirculating combustion gases, combustion chamber pressurized fuel in the medium obtained compression mixture with the cooled air recirculated products of combustion to form a high-temperature gaseous combustion products, gas turbine decompression...
Diesel generators and power battery hybrid all electric ship is the research object in this paper. The key components of the hybrid power system models are established and the energy management strategy is studied. The diesel generators power output is chosen as control variables and a logic threshold control strategy is suggested taking the diesel fuel economy and efficiency as the control target...
This paper presents an application of Genetic Algorithm (GA) to solve Economic Load Dispatch problem which aims to determine minimum fuel cost and Environmental Load Dispatch problem which aims to determine minimum gas emission for required energy production of the chosen power system. Test system is chosen as IEEE-30 bus system which includes 6 generators with necessary values given for ease of simulation...
this paper presents results on the simulation, modeling and optimization of an off grid hybrid solar PV/diesel/battery/inverter power system for residential application. The principal objective is to design a standalone renewable energy system to meet the desired electric load with high renewable fraction, low excess power and low cost of energy. Hourly simulations and optimization were performed...
This paper investigates the impact of incorporation of renewable energy (RE) resources on diesel generation carbon footprint reduction in Canada's remote communities. A multiple-year planning optimization problem is adopted to study the feasibility of integration of RE and energy storage system (ESS) in isolated microgrids of remote communities and to verify the economic and environmental benefits...
This paper analyses the key benefits of a multiple paralleled diesel generator system over a “Single” diesel generator system for supplying small remote and isolated loads. Even though having several small diesel generators in parallel instead of one larger one will certainly induce higher capital cost of the generating unit, the resulting cost of kWh generated as well as the system is life cycle...
Microgrids have become a preferred source of energy for remote locations due to their relative reliability and minimal operational cost. In this work, the optimal operational dispatch of an islanded microgrid consisting of a Combined Heat and Power (CHP) generator and PV generator is considered. The power sources must satisfy the load and heat demand whilst simultaneously minimizing the daily operational...
Economic load dispatch problem involves various equality and inequality constraints which makes it complex. This paper presents a comparative study between Particle swarm optimization and Gravitational search algorithm to analyze the Economic load dispatch problem for three and six unit system. The role of heuristic optimization methods in solving the economic load dispatch problem has been highlighted...
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