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TB 160 2000 SC 14 WG 14.27 Unified power flow controller (UPFC)

The result of a dialogue between utilities and manufacturers concerning the application of the unified power flow controller (UPFC). its purpose is to provide comprehensive information on the physical nature of such devices, the functions they can provide, the value of these functions for utilities, the way to implement them in the network, the problems to anticipate and the obstacles that may exist regarding costeffective implementation.

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TABLE OF CONTENTS

1 INTRODUCTION

2 BASIC CONCEPTS

      2.1 Introduction

      2.2 UPFC Functions

      2.3 Advantages and Drawbacks Relative to other Devices

            2.3.1 Power Flow Comparison in Steady State between the UPFC and Controlled Series Compensation

            2.3.2 Comparison of the UPFC to the Controlled Phase Shifter

            2.3.3 Numerical Application for P-Q region for the UPFC

      2.4 Major Cost Element

      2.5 References