Impacts Of Grid Voltage Dip On The Performance Of Wind Turbine And Its Power Control During Fault Ride Through (Frt) The Case Study Of Doubly-Fed Induction Generator

Alshibani, Ahsein Jomaa and Dr. Rini Nur Hasanah,, S.T., M.Sc and Ir. Hadi Suyono,, S. T., M.T., Ph.D, IPM (2018) Impacts Of Grid Voltage Dip On The Performance Of Wind Turbine And Its Power Control During Fault Ride Through (Frt) The Case Study Of Doubly-Fed Induction Generator. Magister thesis, Universitas Brawijaya.

Abstract

Turbin angin yang dilengkapi dengan generator induksi makan ganda telah umumnya digunakan sebagai pembangkit tenaga angin yang terhubung ke jaringan publik sebagai komponen sistem pembangkit tenaga listrik. Turbin angin yang terhubung ke jaringan adalah sensitif terhadap gangguan Grid, terutama penurunan tegangan grid yang disebabkan oleh transien kesalahan sistem tenaga. DFIG dihubungi ke Grid melalui konduktor yang gunakan tegangan jaringan melalui transformator bantu untuk melakukan mekanisme untuk menyalakan/mematikan DFIG ke sistem transmisi daya atau jaringan publik. Di dalam tesis, dampak penurunan tegangan pada turbin angin DFIG dan turbin utama kontaktornya adalah Kepentingan penelitian ini. Studi ini berkonsentrasi pada simulasi proses menghubungkan generator DFIG ke Grid publik melalui AC Utamanya kontaktor dan pemodelan berbagai penurunan tegangan simetris dan asimetris, dan dampak kegagalan tersebut pada proses penyambungan generator ke listrik sistem melalui kontak kontaktor dan juga dampaknya terhadap kinerja generator.

English Abstract

The wind turbines equiped with doubly fed induction generators have been commonly used as the wind power generation connected to the public grid as a component of the power generation system. The grid-connected wind turbines are sensitive to the Grid disturbances, especially grid voltage dips caused by the transient faults of the power system. The DFIG is contacted to the Grid via conductors which use the grid voltage through an auxiliary transformer to perform the mechanism to switching on/off the DFIG to the power transmission system or public grid. In this thesis, the impact of the voltage dips on the wind turbine of DFIG and the main contactor of it is The interest of this study. The study concentrated on simulating the process of connecting the DFIG generator to the public Grid through its Main AC contactor and modelling of various symmetrical and asymmetrical voltage dips, and the impact of these failures on the process of connecting the generator to the power system via contactor contacts and also their impact on the performance of the generator. Thus, the voltage dip effect on the doubly fed induction generator connected to the public grid and its main Contactor is analyzed. The contactor is subjected to a range of voltage dips to analyze the maximum voltage dip possibility which is keeping the contactor still energize and its contacts still in close position. Due to sudden voltage drop has occurred to the system, the contactor voltage magnitude significantly dropped, Thus losing the ability to keep its contacts stay closed. As a result, the DFIG is disconnected from the grid. Consequently, a large transient in the rotor current is observed, as well as there is a voltage oscillation on the DC bus of the converter which greatly affects the rotor side converter of DFIG. Accordingly, some proposed protection has been added to both the contactor and the DFIG converter. Based on the studies of properties and performance affected by the grid conditions for both the generator and main contactor, the simulated system is analyzed with and without proposed protection and compared at normal condition and different grid faults conditions. the results present the impacts of the AC contactor is effects the behaviour of DFIG as a result of its lost contacting to the power system due to the voltage dips impacts. In addition, the proposed protections is maintained the DFIG to stay connected to the grid during the grid transient, It was also controlled the converter DC voltage and the rotor. Finally, the results observed and interpreted with Matlab/Simulink simulation software.

Item Type:	Thesis (Magister)
Identification Number:	TES/621.312 136/FT/i/2018/041806921
Subjects:	600 Technology (Applied sciences) > 621 Applied physics > 621.3 Electrical, magnetic, optical, communications, computer engineering; electronics, lighting > 621.31 Generations, modification, storage, transmission of electric power > 621.312 Generation, modification, storage > 621.312 1 Generation > 621.312 13 Specific kinds of mechanical generations
Divisions:	S2/S3 > Magister Teknik Elektro, Fakultas Teknik
Depositing User:	Nur Cholis
Date Deposited:	12 Aug 2022 03:53
Last Modified:	12 Aug 2022 03:53
URI:	http://repository.ub.ac.id/id/eprint/193193

Text Ahsein Alshibani Thesis 13-07-2018.pdf Download (2MB)

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