Optimal design and techno-economic analysis of an autonomous small isolated microgrid aiming at high RES penetration

Thomas, Dimitrios; Deblecker, Olivier; Ioakimidis, Christos S.

doi:10.1016/j.energy.2016.09.119

Cited by 90 publications

(37 citation statements)

References 54 publications

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“…The underlying assumption is that the entire operating range between the current loading level of an online unit and its maximum permissible power output (P max u ), as in Figure 3a, is available to deploy in case of system disturbances, ignoring the associated time scales. In spite of its oversimplified nature, the concept of spinning reserves is quite commonly used for NII power systems [13,14,40], even in association with sophisticated UC approaches [28,[41][42][43]. In spite of its oversimplified nature, the concept of spinning reserves is quite commonly used for NII power systems [13,14,40], even in association with sophisticated UC approaches [28,[41][42][43].…”

Section: Essential Differences Between the Examined Uc Approachesmentioning

confidence: 99%

Comparative Assessment of Priority Listing and Mixed Integer Linear Programming Unit Commitment Methods for Non-Interconnected Island Systems

Psarros

Papathanassiou

2019

Energies

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The generation management concept for non-interconnected island (NII) systems is traditionally based on simple, semi-empirical operating rules dating back to the era before the massive deployment of renewable energy sources (RES), which do not achieve maximum RES penetration, optimal dispatch of thermal units and satisfaction of system security criteria. Nowadays, more advanced unit commitment (UC) and economic-dispatch (ED) approaches based on optimization techniques are gradually introduced to safeguard system operation against severe disturbances, to prioritize RES participation and to optimize dispatch of the thermal generation fleet. The main objective of this paper is to comparatively assess the traditionally applied priority listing (PL) UC method and a more sophisticated mixed integer linear programming (MILP) UC optimization approach, dedicated to NII power systems. Additionally, to facilitate the comparison of the UC approaches and quantify their impact on systems security, a first attempt is made to relate the primary reserves capability of each unit to the maximum acceptable frequency deviation at steady state conditions after a severe disturbance and the droop characteristic of the unit’s speed governor. The fundamental differences between the two approaches are presented and discussed, while daily and annual simulations are performed and the results obtained are further analyzed.

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Section: Essential Differences Between the Examined Uc Approachesmentioning

confidence: 99%

Comparative Assessment of Priority Listing and Mixed Integer Linear Programming Unit Commitment Methods for Non-Interconnected Island Systems

Psarros

Papathanassiou

2019

Energies

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“…So, the fuel curve of each generator was modelled as a straight line with a y-intercept. For constant speed internal combustion generators, a straight-line fuel curve is an accurate approximation [39]. The generator fuel consumption rate was modelled using…”

Section: Diesel Generatorsmentioning

confidence: 99%

“…Among them, Hybrid Optimization Model for Electric Renewables (HOMER) has come under scrutiny as an effective tool. HOMER as a simulation platform appears repeatedly in academic literature confirming its competence in handling large set of variables associated with design, optimization and performance evaluation of HRES [4,14,24,25,28,33,36,39,40].…”

Section: Introductionmentioning

confidence: 95%

Optimal Sizing and Performance Evaluation of a Hybrid Renewable Energy System for an Off-Grid Power System in Northern Canada

Kaluthanthrige

Rajapakse

Lamothe

et al. 2019

Technol Econ Smart Grids Sustain Energy

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Sole dependence on diesel energy has imposed a wide array of problems upon the operation of off-grid power systems in Northern Canada. Hybrid Renewable Energy Systems (HRES) have been vehemently emerging as a feasible alternative to the existing diesel-based generation facilities. To maximize the intended benefits, proper component selection, optimum sizing of the grid configuration and performance evaluation in the economic, environmental and reliability paradigms become decisive steps in their designing process. This paper presents a HOMER software-based gird optimization study to optimally retrofit a remote off-grid power system in Northern Canada. Topologies like Battery-Diesel, PV-Diesel and PV-Diesel-Battery were assessed under different scenarios to find the optimum retrofit for a primarily diesel-based generation facility. Results reveal the competence of PV-Diesel-Battery topology at high renewable penetration levels in achieving the envisioned benefits. Around a renewable penetration level of 21%, fuel savings up to 22% is achievable along with 0-0.5% reductions in Levelized cost of electricity compared to the existing diesel-based power system. While diversifying the energy mix, the PV-Diesel-Battery topology considerably curbs the environmental degradation caused by the diesel-only operation and ensures the reliability, availability and security of the power supply.

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“…The control effect of the current energy control system on energy loss is unsatisfactory. The main reason is that the control ability is relatively poor, and the key parameters cannot be stable and reliable [6]. Such a situation has seriously increased the loss and waste of energy.…”

Section: Introductionmentioning

confidence: 99%

Exploring the optimal design of computer control system for heating boilers in power plants

Mao

Sun

Ju³

2020

THERM SCI

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Objective: For stable and efficient control of the heating boilers in power plants, an improved Smith-fuzzy PID algorithm is used to optimize the computer control system for heating boilers. Methods: Under the computer control system, the pressure, exhaust gas temperature, water temperature, safety, and energy consumption of heating boilers are explored, thereby determining the optimization effect of the computer control system. Results: The improved Smith-fuzzy PID algorithm has the optimal control effect on water temperature and pressure of the heating boilers, with the highest balance and stability. In comparison, the fluctuations in temperature control curves under Smith-PID and PID algorithms are large. Compared with the exhaust gas temperature of the other two algorithm systems, the exhaust gas temperature of the improved Smith-fuzzy PID algorithm-based computer system is reduced by 40 °C, which decreases the consumption of coal resources. Conclusion: The improved Smith-fuzzy PID algorithm-based heating boiler computer control system has the most prominent effects on water temperature, pressure, and exhaust gas temperature. The designed system is accurate and reliable, satisfying the actual design requirements of computer control systems for heating boilers.

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Optimal design and techno-economic analysis of an autonomous small isolated microgrid aiming at high RES penetration

Cited by 90 publications

References 54 publications

Comparative Assessment of Priority Listing and Mixed Integer Linear Programming Unit Commitment Methods for Non-Interconnected Island Systems

Comparative Assessment of Priority Listing and Mixed Integer Linear Programming Unit Commitment Methods for Non-Interconnected Island Systems

Optimal Sizing and Performance Evaluation of a Hybrid Renewable Energy System for an Off-Grid Power System in Northern Canada

Exploring the optimal design of computer control system for heating boilers in power plants

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