Simulation and Study of Power Quality Issues in a Fixed Speed Wind Farm Substation

Magesh, T.; Chellamuthu, C.

doi:10.1155/2015/367540

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…In this type of configuration, both the active and reactive power variations contribute to the flicker emission and thus subjected to the aero dynamical behaviour of the turbine [24]. The causes of various power quality issues were simulated and measured at the fixed speed wind farm substation where frequent tripping of the generators occurred [25]. In this paper, the analysis of short-term flicker emission was not studied.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Flicker Emission in a Grid Connected Wind Farms

Magesh¹,

Devi²,

Lakshmanan

2023

J. Electr. Eng. Technol.

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Wind farms in Tamil Nadu's Coimbatore district have identified several issues, including flickering emissions, frequent generator tripping, and power evacuation issues caused by a weak grid. Taking into consideration the scarcity of research on flickering emissions, this work focuses on the causes of short-term flicker severity (Pst) in wind farms that export generated power to industrial loads. To identify the scenarios that cause flickering, simulation models of Fixed Speed Wind Farm (FSWF) and Variable Speed Wind Farm (VSWF) with controllers were developed using DIgSILENT power factory software. The flicker emissions were measured at the wind farm substations using Fluke and Dranetz PX5.8 power quality analyzers in accordance with the IEC 61400-21 standard. To validate the simulation model, the results from the flickermeter during the simulation and the field measurements were compared. According to the results of this research, both fixed and variable speeds produce flicker emissions that exceed the IEC standard limit, that causes the power electronics-based industrial drives to fail to operate. The controllers were developed to improve the performance of wind farms that will benefit the current and future wind energy-efficient conversion systems (WECS). Keywords FSWF. VSWG. Flickering. Point of Common Coupling. Power Quality Analyzer [40] Abulanwar, Sayed, Abdelhady Ghanem, Mohammad EM Rizk, Weihao Hu. (2019) A proposed flicker mitigation scheme of DFIG in weak distribution networks.

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Section: Introductionmentioning

confidence: 99%

Assessment of Flicker Emission in a Grid Connected Wind Farms

Magesh¹,

Devi²,

Lakshmanan

2023

J. Electr. Eng. Technol.

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“…According to IEC standards, Real-time events are measured at the gridconnected wind farms which help to understand the various cause of the events and its effect. The simulation model of the wind farm is also validated by comparison with the recorded events (2,3) .MATLAB and Simulink were used to create a mathematical model of a wind turbine-based induction generator. An aerodynamic model, a wind turbine drive train based on two mass models, and an induction generator model comprise the developed model wind turbine.…”

Section: Introductionmentioning

confidence: 99%

Impact of an Unsymmetrical Fault on the Controller of the DFIG Wind Farm

Magesh¹,

Annie²,

Sambath³

et al. 2023

IJST

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Objectives: DFIG-based wind farms are predominant in their performance when compared to other types of generators. In the field study, due to transient events, converters at the machine side and grid side are affected. To protect the converters from an abnormal operation, overcurrent protective relays have to be designed and incorporated. Unsymmetrical fault analysis are help in the design of protective devise and speed sensors. Methods: DFIG-based wind systems are developed using the DIgSILENT power factory software and EMT simulations are executed during the unsymmetrical faults applied near the Machine Side Converter (MSC) and Grid Side Converter(GSC). Findings: During the simulation studies, various parameters are transient time, maximum current, steady-state, and voltage drop identified near the MSC and GSC. The short circuit parameters are attenuated during the unsymmetrical faults and the rotor maximum current increases by 2 to 3 times the rated current per unit, 40% to 50% voltage dip, and the current reach the steady state value after 1.213 sec during the fault. The parameters are affected more when a fault occurs near the GSC when compared to a fault near MSC. Novelty: These research findings will contribute to a better understanding and improvement of sensor sensitivity, as well as the development of control mechanisms, and protection tactics in designing more accurate and appropriate for DFIG-WT.

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