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TB 065 1992 SC 14 WG 14.03 AC harmonic filters and reactive compensation for HVDC with particular reference to noncharacteristic harmonics.

This paper summarises a report prepared by WG14-03 (Filtering and reactive compensation for HVDC) and is a complement to the paper published in Electra No. 63 (1979). The brochure included details on : Importance of non-characteristic harmonics, Generation of non-characteristic harmonics, Impact on AC and DC networks, Disturbance criteria, Transient operating modes, Solutions selected for recent links etc.

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TABLE OF CONTENTS

1 INTRODUCTION

2 IMPORTANCES OF NON CHARACTERISTIC HARMONICS

3 GENERATION OF NON CHARACTERISTIC HARMONICS

      3.1 Sources of non-characteristic harmonics

      3.2 Influence of various asymmetries

      3.3 Magnitudes of various asymmetries

      3.4 Relative importance of various parameters

4 EFFECTS OF THE AC AND DC SYSTEMS

      4.1 Magnification of low order harmonics

      4.2 Importance of the AC network resistance at low frequency

5 DISTURBANCE CRITERIA

      5.1 Characteristics of a good disturbance criterion

      5.2 Effects of including non-characteristic harmonics

      5.3 Recommended criteria

            5.3.1 Voltage distortion

            5.3.2 Telephone interference

6 TRANSIENT CONDITIONS

      6.1 Role of AC filters for improving performance

      6.2 Design considerations

7 REVIEWS OF RECENT SCHEMES

      7.1 Acaray

      7.2 Dürnrohr

      7.3 Gotland

      7.4 Eddy County (no description)

      7.5 Itaipu

      7.6 Choteauguay

            7.6.1 Original filter arrangement

            7.6.2 Later Filter Expansion

      7.7 Pacific Intertie Upgrade

      7.8 Highgate

      7.9 Oklaunion

            7.9.1 Original AC System

            7.9.2 Present AC System

      7.10 Blackwater

      7.11 Miles City

      7.12 Madawaska

      7.13 The 2000 MW Cross Channel link

            7.13.1 English convertor station: Les Mandarins

            7.13.2 English convertor station: Sellindge

      7.14 The Intermountain Project (IPP)

            7.14.1 The Intermountain station

            7.14.2 The Adelanto station

      7.15 Quebec – New England

            7.15.1 Phase 1

            7.15.2 Phase 2

      7.16 Sidney

      7.17 Corsica tapping

      7.18 Saco 2

      7.19 Fenno-Skan HVDC

            7.19.1 Finish converter station: Rauma

            7.19.2 Swedish converter station: Dannebo

      7.20 Konti-Skan 2

      7.21 Vindhyachal

      7.22 Gezhauba-Shanghai HVDC

      7.23 Reihand-Delhi

      7.24 McNeill

8 SUMMARY AND CONCLUSIONS