Group-B.

Reactive Power Compensation Using STATCOM.

Projectees-

Vrinda Tibude Bhushan

Kumbhalkar

Deepali Shende Shravan

Bamrautwar

Piyush Rane Saroj Wankhede.

Nilesh Kolhe

Guided By - Prof. Archana Shirbhate.

Co-guided By - Prof. Nawaz Sheikh.

CONTENTS.

Introduction.Real, reactive and apparent power.FACTS device.Need for compensation.STATCOM.Single line diagram.Expected results.Reference.

INTRODUCTION

Reactive power compensation and voltage regulation are two effective measures to improve the voltage quality.

By using new emerging technology the stability and reliability of the system can be maintain very well using FACTS devices.

Usually a STATCOM is installed to support electricity networks that have a poor power factor and often poor voltage regulation.

VAR compensation is defined as the management of reactive power to improve the performance of ac power systems.

ELECTRICAL POWER

In this we are compensating the Reactive power

A. Active Power

B. Reactive Power

C. Apparent Power

REACTIVE POWER

What is Reactive power.

Need

Importance

Purpose

Sources

NEED FOR COMPENSATION

The voltage regulation

Increased system stability.

Better utilization of the machines connected to the system.

Reducing losses associated with the system.

To prevent voltage collapse.

NEW VAR COMPENSATOR’S TECHNOLOGY

Static Synchronous Compensator (STATCOM),

Static Synchronous Series Compensator (SSSC),

Dynamic Voltage Restorer (DVR),

Unified Power Flow Controller (UPFC),

Interline Power Flow Controller (IPFC) and

Superconducting Magnetic Energy Storage (SMES).

SINGLE LINE DIAGRAM OFREACTIVE POWER COMP. USING

STATCOM

Components mainly used are :

Coupling Transformer

Voltage source converter

Capacitor bank

STATCOM controller

VOLTAGE SOURCE CONVERTER (VSC)

In the figure, we have represented ideal bi-directional switches. It converts voltage and currents from DC to AC while the exchange of power can be in both directions• From AC to DC (rectifier

mode)• From DC to AC (inverter

mode).

VSC

STATCOM CONTROLLER

The strategy of STATCOM controller is to keep the DC capacitor voltage constant while controlling the modulation index to keep the voltage constant during the disturbance interval

PWM TECHNIQUE

The amplitude of the fundamental component of the output voltage VMOD, which can be modified with the PWM pattern as shown in figure.

When VMOD › VCOMP

the VAR compensator generates reactive power

and when VMOD ‹ VCOMP

the compensator absorbs reactive power

REFERENCES

Dr. Dhiya A. Al-Nimma, Dr. Majed S. M. Al-Hafid, &SaadEnad Mohamed, Voltage Profile Improvements of Mosul City Ring System by STATCOM Reactive Power Control. IEEE press, 2011.

Narain Hingorani & L. Gyugi, Understanding FACTS, Concepts and Technology of Flexible AC Transmission Systems, IEEE Press, 2000.

N. Tambey& M. L. Kothari, Damping of power system oscillations with unified power flow controller (UPFC), IEE Proc. – Generation, Transmission, Distribution, Vol. 150, 2003.

Ashok Kumar Bajia, Development of power flow model of a STATCOM, Delhi College of Engineering, 2009.

W.D. Stevenson, Elements Of Power System Analysis, McGrawHill,1975 C. L. Wadhwa, Electrical Power Systems, New Age International Publishers,

2009