statcom presentation1

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PERFORMANCE ANALYSIS OFSTATCOM FOR POWER FLOWANALYSIS OF AN EXISTING

TRANSMISSION SYSTEM

Under the Supervision of

Mr. S. BALASUBRAMANIYAN M.E.,

MAILAM ENGINEERING COLLEGE,MAILAM.

Presented By

M.GEETHA ,

PG SCHOLAR,M.E,(POWER ELECTRONICS &DRIVES),

MAILAM ENGINEERING COLLEGE,MAILAM.


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LITERATURE SURVEY

1970s, power electronics-based control for reactive

compensation was implemented. The desire to findsolutions to these problems and limitations have led tofocused technological developments under the FlexibleAC Transmission systems(FACTS)(Hingorani, 1988;Gyugyi, 1992; Hingorani, 1993; Hingorani andGyugyi,1998; Song and Johns, 1998; Zelinger et al.,2000).

However, very little work has been done related to theapplication of D-STATCOM to isolated systems. Anumber of control schemes like instantaneous reactivepower theory Akagi et al., 1984), power balance theoryand indirect current control scheme (Singhet al.,2000ab) have been used for DSTATCOM.


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Contd

Some attempts have also been made to carry outsimulation of DSTATCOM and other FACTS devicesusing standard simulation packages like PSCAD,

EMTDC, MATLAB etc. (Lara and Acha,2002; Girouxet al., 2001;

The distribution static compensator (D-STATCOM)is a key controller, and it utilises power electronicsto solve many power quality problems commonlyfaced by distribution systems. Potentialapplications of D-STATCOM include power factorcorrection, voltage regulation, load balancing andharmonic reduction (Ghosh and Ledwich 2002).


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INTRODUCTION

The reactive power compensator based onvoltage source inverter such as STATCOM areused in several power applications - due to theirfast response, flexibility, and effective control

But still VSI is having some draw backsduring unbalanced conditions indeed for VSI`sswitching at low frequency with stationaryreference frame do not provide enoughbandwidth.

This can be achieved by the proposed d-qregulators which gives satisfactory performancein terms of reference tracking.


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STATCOM

The STATCOM (static synchronous

compensator ) is a shunt connectedreactive power compensation devicethat is capable of generating and/or

absorbing reactivepower.


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BLOCK DIAGRAM


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Transmission line distance betweenthe generator and the load is 100km.

PI controller is used to compensate thereactive power at generating side for active

power flow existing in the transmission line.


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Here the phase angle between thevoltage and current is in phase with each otherto improve the power factor improvement.

Waveform at phase angle of o degree isshown. Also shown at phase angle of 180degree for comparing power flow existing in the

transmissionline.


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RESULTS


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VOLTAGE WAVEFORM


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PQ SETTINGS


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POWERFACTOR


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DC LINK VOLTAGE


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CONCLUSION

From the simulation results it is concluded thatreactive power is compensated and also activepower is balanced.

The performance of the STATCOM along withclosed loop controlling technique is verifiedusing simulation

And further work can be expanded to themodern UPFC and FACTS.


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THANK U

statcom presentation1

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