A STATCOM-Control Scheme for Grid Connected Wind Energy System for Power Quality Improvement

Visvesvaraya Nat. Inst. of Technol., Nagpur, India
IEEE Systems Journal (Impact Factor: 1.98). 10/2010; 4(3):346 - 352. DOI: 10.1109/JSYST.2010.2052943
Source: IEEE Xplore


Injection of the wind power into an electric grid affects the power quality. The performance of the wind turbine and thereby power quality are determined on the basis of measurements and the norms followed according to the guideline specified in International Electro-technical Commission standard, IEC-61400. The influence of the wind turbine in the grid system concerning the power quality measurements are-the active power, reactive power, variation of voltage, flicker, harmonics, and electrical behavior of switching operation and these are measured according to national/international guidelines. The paper study demonstrates the power quality problem due to installation of wind turbine with the grid. In this proposed scheme STATic COMpensator (STATCOM) is connected at a point of common coupling with a battery energy storage system (BESS) to mitigate the power quality issues. The battery energy storage is integrated to sustain the real power source under fluctuating wind power. The STATCOM control scheme for the grid connected wind energy generation system for power quality improvement is simulated using MATLAB/SIMULINK in power system block set. The effectiveness of the proposed scheme relives the main supply source from the reactive power demand of the load and the induction generator. The development of the grid co-ordination rule and the scheme for improvement in power quality norms as per IEC-standard on the grid has been presented.

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    • "Le premier est d'améliorer les performances dynamiques et la qualité de l'énergie du réseau. Par ailleurs, les machines à induction nécessitent de la puissance réactive pour leur magnétisation [4]. Ainsi, le second sera la compensation de cette puissance réactive. "
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    ABSTRACT: p>L'utilisation d'éoliennes à vitesse fixe dans un réseau électrique entraîne des problèmes de fluctuations de puissance lors de variations de la vitesse du vent à travers le couple. Les perturbations affectent la qualité de la puissance active et la puissance réactive du réseau. Le principe du système proposé dans cet article concerne l'association d'une éolienne et d'un STATCOM avec un supercondensateur sur le bus continu. L'objectif est de filtrer les variations de la puissance active et de compenser de puissance réactive nécessaire à la magnétisation de la génératrice asynchrone. La stratégie de contrôle du STATCOM est basée sur une commande par retour d'état qui utilise la technique des LMIs (Linear Matrix Inequalities) pour la synthèse des régulateurs des différentes boucles. Ces régulateurs prennent en compte la variation de la tension du bus continu. Le système a été simulé avec le logiciel Matlab/Simulink. Les résultats de simulation sont présentés et commentés. </p
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    • "The method has been used an electrolyser/fuel cell combination to be connected to the point of common coupling via limited rating converters. Sharad W. Mohod and Mohan V. Aware [43], this literature study has been demonstrated the power quality problem due to installation of wind turbine with the grid. In this proposed scheme STATCOM has been connected at a point of common coupling with a battery energy storage system (BESS) to mitigate the power quality issues. "
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    ABSTRACT: This paper presents a comprehensive survey on the mitigation of power quality problems such as low power factor, shortage of reactive power, poor voltage, voltage and current harmonics due to sudden change in field excitation of synchronous alternator, sudden increased in load, sudden fault occur in the system are solved by FACTS controllers such as STATCOM, DSTATCOM. This paper also presents current status of mitigation of power quality problems by FACTS controllers. Authors strongly believe that this survey article will be very much useful to the researchers for finding out the relevant references in the field of power quality problems solved by FACTS controllers.
    12/2012; 1(1). DOI:10.5963/IJCSAI0101001
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    ABSTRACT: The proposed wind energy conversion system with battery energy storage is used to exchange the controllable real and reactive power in the grid and to maintain the power quality norms as per International Electro-technical commission IEC-61400-21 at the point of common coupling. The generated wind power can be extracted under varying wind speed and can be stored in the batteries at low power demand hours. In this scheme, inverter control is executed with hysteresis current control mode to achieve the faster dynamic switchover for the support of grid. The combinations of battery storage with wind energy generation system, which will synthesizes the output waveform by injecting or absorbing reactive power and enable the real power flow required by the load. The system reduces the burden on the conventional source and utilizes WEGS and battery storage power under load constraints. The system provides rapid response to support the grid. The scheme can also be operated as a stand-alone system in case of grid failure like a uninterrupted power supply. The system is simulated in MATLAB and results are presented.
    Energy Procedia 12/2011; 12:1032-1041. DOI:10.1016/j.egypro.2011.10.135
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