Power Loss Analysis for Wind Power Grid Integration Based on Weibull Distribution

Ahmed Al Ameri,Cristian Nichita,Aouchenni Ounissa,Aouzellag Djamal

doi:10.3390/en10040463

Ahmed Al Ameri, Cristian Nichita + Show 2 more

Open Access

https://doi.org/10.3390/en10040463

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Journal: Energies	Publication Date: Apr 2, 2017
Citations: 18	License type: CC BY 4.0

Affiliation: University of Le Havre, University of Béjaïa

Abstract

The growth of electrical demand increases the need of renewable energy sources, such as wind energy, to meet that need. Electrical power losses are an important factor when wind farm location and size are selected. The capitalized cost of constant power losses during the life of a wind farm will continue to high levels. During the operation period, a method to determine if the losses meet the requirements of the design is significantly needed. This article presents a Simulink simulation of wind farm integration into the grid; the aim is to achieve a better understanding of wind variation impact on grid losses. The real power losses are set as a function of the annual variation, considering a Weibull distribution. An analytical method has been used to select the size and placement of a wind farm, taking into account active power loss reduction. It proposes a fast linear model estimation to find the optimal capacity of a wind farm based on DC power flow and graph theory. The results show that the analytical approach is capable of predicting the optimal size and location of wind turbines. Furthermore, it revealed that the annual variation of wind speed could have a strong effect on real power loss calculations. In addition to helping to improve utility efficiency, the proposed method can develop specific designs to speeding up integration of wind farms into grids.

Highlights

The structure, operation, and planning of electric power networks will undergo considerable and rapid changes due to increased global energy consumption
The goal of this paper is to reveal that the annual variation of wind speed could have a strong effect on real power loss calculations
The capacity of the wind farm will be selected based on this condition (30% of total generation required), which is 45 MW, so the wind farm will consist of 30 individual wind turbines with rated output power of 1.5 MW and each of them will be subject to same distributed wind field

Summary

Introduction

The structure, operation, and planning of electric power networks will undergo considerable and rapid changes due to increased global energy consumption. Since wind turbine units have a small capacity compared to conventional power plants, its impact is minor if the penetration level is low (1%–5%). If the penetration level of wind farms increases to the anticipated level of 20%–30%, they will have a high impact on the active power loss of the grid [2]. A simple analysis method for determining the real losses considering the wind resource has been implemented by [3]. It is based on DC power flow, while certain errors in calculation are observed when simulated running in AC power flow for several wind conditions. In [4], the point estimate method (PEM) was used as an assessment of the operational risk in electrical distribution systems

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