IEC PAS 62544:2008
(Main)Active filters in HVDC applications
Active filters in HVDC applications
It presents both DC and AC active filters, including the existing installations. The items of the report are basically arranged in two consecutive parts, the first one treating the DC application, and the second covering the AC filters. As active DC and AC filters share many concepts, the reader interested in such a subject is encouraged to search for it in both parts.
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IEC/PAS 62544
Edition 1.0 2008-02
PUBLICLY AVAILABLE
SPECIFICATION
PRE-STANDARD
Active filters in HVDC applications
IEC/PAS 62544:2008(E)
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IEC/PAS 62544
Edition 1.0 2008-02
PUBLICLY AVAILABLE
SPECIFICATION
PRE-STANDARD
Active filters in HVDC applications
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XA
ICS 29.240.99 ISBN 2-8318-9595-2
– 2 – PAS 62544 © IEC:2008(E)
CONTENTS
FOREWORD. 4
0.1 INTRODUCTION . 5
0.2 SCOPE. 5
1 ACTIVE DC FILTERS IN HVDC APPLICATIONS . 6
1.1 INTRODUCING ACTIVE DC FILTERS .6
1.2 TECHNICAL DEMANDS TO DISTURBANCES ON THE DC SIDE . 7
1.3 DESCRIPTION OF ACTIVE DC FILTERS . 7
1.3.1 Semiconductors available for a power stage . 8
1.3.2 Types of converters available . 8
1.3.3 Connections of the active DC filter . 9
1.3.4 Characteristics of installed active DC filters . 11
1.4 MAIN COMPONENTS IN AN ACTIVE DC FILTER . 11
1.4.1 The Passive Part .12
1.4.2 The current transducer .13
1.4.3 The control system . 14
1.4.4 The amplifier . 14
1.4.5 The Transformer . 14
1.4.6 Protection circuit and arrester . 14
1.4.7 Bypass switch and disconnectors.15
1.5 ACTIVE DC FILTER CONTROL . 15
1.5.1 Active DC Filter Control methods . 15
1.6 PROJECT DESCRIPTIONS AND DC FILTER SOLUTIONS . 18
1.6.1 Skagerrak 3 HVDC Intertie . 18
1.6.2 Baltic Cable HVDC Link . 19
1.6.3 Chandrapur-Padghe HVDC power transmission project . 20
1.6.4 Tian - Guang long distance HVDC project . 21
1.6.5 EGAT-TNB (Thailand-Malaysia) HVDC Interconnection . 21
1.7 PERFORMANCE OF THE SKAGERRAK 3 HVDC INTERTIE ACTIVE DC
FILTER . 22
1.8 CONCLUSIONS ON ACTIVE DC FILTERS . 24
2 ACTIVE AC FILTERS IN HVDC APPLICATIONS . 25
2.1 INTRODUCING ACTIVE AC FILTERS . 25
2.2 TECHNICAL DEMANDS TO HARMONIC DISTURBANCES ON THE AC SIDE . 25
2.3 PASSIVE FILTERS .26
2.3.1 Conventional passive filters . 26
2.3.2 Continuously tuned passive filters . 27
PAS 62544 © IEC:2008(E) – 3 –
2.4 REASONS FOR USING ACTIVE FILTERS IN HVDC SCHEMES . 28
2.5 OPERATION PRINCIPLES OF ACTIVE FILTERS . 29
2.5.1 Shunt connected active filter . 29
2.5.2 Series connected active filter . 30
2.6 PARALLEL AND SERIES CONFIGURATION . 31
2.6.1 Hybrid filter schemes .32
2.7 CONVERTER CONFIGURATIONS .33
2.7.1 Converters . 33
2.7.2 STATCOM . 35
2.8 ACTIVE AC FILTER CONFIGURATIONS . 37
2.8.1 Active ac filters for low voltage application . 37
2.8.2 Active ac filters for medium voltage application . 37
2.8.3 Active ac filters for HVDC applications . 37
2.9 SERIES CONNECTED ACTIVE FILTERS . 38
2.10 CONTROL SYSTEM . 39
2.10.1 Introduction . 39
2.10.2 Description of a Generic Active Power Filter Controller . 39
2.10.3 Calculation of Reference Current . 40
2.10.4 Synchronous Reference Frame (SRF) . 41
2.10.5 Other Control Approaches . 42
2.10.6 HVDC AC Active Filter Control Approach . 43
2.11 EXISTING ACTIVE AC FILTER APPLICATIONS . 43
2.11.1 Low and medium voltage . 43
2.11.2 High voltage applications . 43
2.12 OVERVIEW ON FILTER SOLUTIONS FOR HVDC SYSTEMS . 46
2.12.1 Solution with conventional passive filters . 46
2.12.2 Solution with continuously tuned passive filters .47
2.12.3 Solution with active filters . 47
2.12.4 Solution with continuously tuned passive filters and active filters . 48
2.12.5 Study cases with the Cigré HVDC model . 48
2.13 FUTURE TECHNOLOGIES . 50
2.14 CONCLUSIONS ON ACTIVE AC FILTERS . 50
3 BIBLIOGRAPHY . 51
– 4 – PAS 62544 © IEC:2008(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ACTIVE FILTERS IN HVDC APPLICATIONS
FOREWORD
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A PAS is a technical specification not fulfilling the requirements for a standard, but made
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IEC-PAS 62544 was submitted by the CIGRÉ (International Council on Large Electric Systems)
and has been processed by subcommittee 22F: Power electronics for electrical transmission and
distribution systems, of IEC technical committee 22: Power electronic systems and equipment.
The text of this PAS is based on the This PAS was approved for
following document: publication by the P-members of the
committee concerned as indicated in
the following document
Draft PAS Report on voting
22F/130/NP 22F/147/RVN
Following publication of this PAS, which is a pre-standard publication, the technical co
...
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