Optimal Scheduling in Offshore Wind Farms Considering Harmonic Losses and Locational Marginal Pricing

Gbadamosi, Saheed Lekan; Nwulu, Nnamdi; Sun, Yanxia

doi:10.1109/powerafrica.2018.8520979

Cited by 9 publications

(2 citation statements)

References 13 publications

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“…Different combinations of renewable energy system units are used to verify their respective effects on the power system reliability, and this is performed on the following case studies: For all case studies, the five generating systems consist of two CHP generating units of 30 kW and 20 kW, respectively, a 12 kW wind turbine generating unit, a 15 kW PV system and a 10 kW battery system, as shown in Table 1. The developed optimization model is solved using CPLEX 12.8 solver programmed in Algebraic Modelling Language (AML) [29,30]. AML are used for solving optimization problems.…”

Section: Description Of Study Casesmentioning

confidence: 99%

Optimal Power Dispatch and Reliability Analysis of Hybrid CHP-PV-Wind Systems in Farming Applications

Gbadamosi

Nwulu

2020

Sustainability

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Renewable energy sources (RES) are seen as potential alternative energy sources for rural communities to meet energy demand where electricity supply is inaccessible. Wind and Photo-Voltaic (PV) power is seen as mature and sustainable alternatives for rural electrification. This paper discusses the optimal power dispatch for hybrid combined heat and power (CHP), wind, PV and battery systems with a view to determining the operation of the hybrid system for farming applications. This is accomplished by considering the basic power system probability concepts to assess the performance of the reliability indices. The proposed mathematical model seeks to minimize the system operation costs from CHP. The developed model was validated on five case studies with the same load profile, solar radiation, wind speed and CHP generating unit parameters and solved using a CPLEX solver embedded in Algebraic Modelling Language. The sensitivity analysis performed indicates that the hybrid system achieved a higher reliability as compared to other case studies. The result shows 48% of energy cost reduction is achievable when considering the proposed hybrid CHP, wind, PV and battery system as compared to energy supply via CHP.

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Section: Description Of Study Casesmentioning

confidence: 99%

Optimal Power Dispatch and Reliability Analysis of Hybrid CHP-PV-Wind Systems in Farming Applications

Gbadamosi

Nwulu

2020

Sustainability

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“…Because of variability and intermittency nature of RES, there inclusion into the grid results into complex TEP optimization problems requiring an optimal power flow (OPF) computational approach in ensuring effective operation and planning of power systems (Gbadamosi et al , 2018b; Babatunde et al , 2019; Gbadamosi and Nwulu, 2019). OPF problem is a crucial tool for TEP optimization because of its ability to provide optimal values for control variables while minimizing or maximizing predefined objectives without violating all necessary constraints (Bouchekara et al , 2014).…”

Section: Introductionmentioning

confidence: 99%

Optimal planning of renewable energy systems for power loss reduction in transmission expansion planning

Gbadamosi

Nwulu

2020

JEDT

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Purpose The purpose of this study is to address the efficiency of power losses representation while still reducing the computational burden of an optimal power flow (OPF) model in transmission expansion planning (TEP) studies. Design/methodology/approach A modified TEP model is formulated with inclusions of linearized approximation of power losses for a large-scale power system with renewable energy sources. The multi-objectives function determines the effect of transmission line losses on the optimal power generation dispatch in the power system with and without inclusion of renewable energy sources with emphasis on minimizing the investment and operation costs, emission and the power losses. Findings This study investigates the impact of renewable energy sources on system operating characteristics such as transmission power losses and voltage profile. Sensitivity analysis of the performance for the developed deterministic quadratic programming models was analyzed based on optimal generated power and losses on the system. Research limitations/implications In the future, a comparison of the alternating current OPF and direct current (DC) OPF models based on the proposed mathematical formulations can be carried out to determine the efficiency and reduction of computation process of the two models. Practical implications This paper proposed an accurate way of computing transmission losses in DC OPF for a TEP context with a view of achieving a minimal computation time. Originality/value This paper addresses the following objectives: develop a modified DC OPF with a linearized approximation of power losses in TEP problem with large integration of RES. Investigate the impact of RES on system operating characteristics such as transmission power losses and voltage profile.

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Generation Capacity Expansion Planning

Nwulu

2021

Green Energy and Technology

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Optimal Scheduling in Offshore Wind Farms Considering Harmonic Losses and Locational Marginal Pricing

Cited by 9 publications

References 13 publications

Optimal Power Dispatch and Reliability Analysis of Hybrid CHP-PV-Wind Systems in Farming Applications

Optimal Power Dispatch and Reliability Analysis of Hybrid CHP-PV-Wind Systems in Farming Applications

Optimal planning of renewable energy systems for power loss reduction in transmission expansion planning

Generation Capacity Expansion Planning

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