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**Harvard**

Abdullah, H. och Ghullam, M. (2010) *Optimal Use Of Energy-Storage For Series Connected Voltage Source Converter *. Göteborg : Chalmers University of Technology

** BibTeX **

@mastersthesis{

Abdullah2010,

author={Abdullah, Hassan and Ghullam, Mustafa},

title={Optimal Use Of Energy-Storage For Series Connected Voltage Source Converter },

abstract={The continuous growth in the use of sensitive equipments in modern power system requires great emphasis on the quality of the power. The quality related issues like voltage sags, swells, surges, interruptions and harmonic problems lead to a great economic loss in the power industry and needs urgent actions. To ensure the reliable and stable operation of the power system, Flexible AC Transmission System (FACTS) controllers at transmission level and custom power devices at distribution level are employed. In practice, the Dynamic Voltage Restorer (DVR) is a key device for mitigation of power quality phenomena at distribution level. DVR is
series connected voltage source converter and is used to inject missing voltage of controllable magnitude and phase angle between the Point of Common Coupling (PCC) and the load. Prime goal of this thesis is to optimize energy storage for series connected compensator. Active power injected by DVR is related to its energy storage so optimization of DVR active power leads to optimization of energy storage.Two types of voltage sag mitigating strategies Energy Optimization Compensation (EOC) and pre-sag considering zero phase angle jumps were studied and results were obtained by using simulation tool PSCAD/EMTDC. Two cases were considered depending upon sag depth for analyzing EOC method. When sag is shallow one, active power injected by DVR is equal to zero which reveals the optimization of energy storage. When sag is deep one, active power injected by DVR is minimum as compared to pre-sag
but not zero. Eﬀects of phase angle jump on the power and energy requirements by using EOC method were also studied. DVR energy injection increases having voltage sag of positive phase jumps whereas its energy injection reduces when voltage sag is having negative phase angle jumps.},

publisher={Institutionen för energi och miljö, Elteknik, Chalmers tekniska högskola},

place={Göteborg},

year={2010},

keywords={Power Quality, Cascade controller, Voltage Sag (dip), Phase angle jump, Voltage Source Converter (VSC), Dynamic Voltage Restorer (DVR), Pre-sag, Energy Optimization Compensation (EOC).},

}

** RefWorks **

RT Generic

SR Print

ID 150644

A1 Abdullah, Hassan

A1 Ghullam, Mustafa

T1 Optimal Use Of Energy-Storage For Series Connected Voltage Source Converter

YR 2010

AB The continuous growth in the use of sensitive equipments in modern power system requires great emphasis on the quality of the power. The quality related issues like voltage sags, swells, surges, interruptions and harmonic problems lead to a great economic loss in the power industry and needs urgent actions. To ensure the reliable and stable operation of the power system, Flexible AC Transmission System (FACTS) controllers at transmission level and custom power devices at distribution level are employed. In practice, the Dynamic Voltage Restorer (DVR) is a key device for mitigation of power quality phenomena at distribution level. DVR is
series connected voltage source converter and is used to inject missing voltage of controllable magnitude and phase angle between the Point of Common Coupling (PCC) and the load. Prime goal of this thesis is to optimize energy storage for series connected compensator. Active power injected by DVR is related to its energy storage so optimization of DVR active power leads to optimization of energy storage.Two types of voltage sag mitigating strategies Energy Optimization Compensation (EOC) and pre-sag considering zero phase angle jumps were studied and results were obtained by using simulation tool PSCAD/EMTDC. Two cases were considered depending upon sag depth for analyzing EOC method. When sag is shallow one, active power injected by DVR is equal to zero which reveals the optimization of energy storage. When sag is deep one, active power injected by DVR is minimum as compared to pre-sag
but not zero. Eﬀects of phase angle jump on the power and energy requirements by using EOC method were also studied. DVR energy injection increases having voltage sag of positive phase jumps whereas its energy injection reduces when voltage sag is having negative phase angle jumps.

PB Institutionen för energi och miljö, Elteknik, Chalmers tekniska högskola,PB Institutionen för energi och miljö, Elteknik, Chalmers tekniska högskola,

LA eng

OL 30