CLC/TR 60919-2:2010

FOREWORD
1 Scope
2 Normative references
3 Outline of HVDC transient performance specifications
4 Switching transients without faults
5 AC system faults
6 AC filters, reactive power equipment and a.c. bus faults
7 Converter unit faults
8 DC reactor, d.c. filter and other d.c. equipment faults
9 DC line faults
10 Earth electrode line faults
11 Metallic return conductor faults
12 Insulation co-ordination - HVDC systems
13 Telecommunication requirements
14 Auxiliary systems
Bibliography
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

IEC/TR 60919-2:2008 provides guidance on the transient performance and fault protection requirements of high voltage direct current (HVDC) systems. It concerns the transient performance related to faults and switching for two-terminal HVDC systems utilizing 12-pulse converter units comprised of three-phase bridge (double way) connections but it does not cover multi-terminal HVDC transmission systems. However, certain aspects of parallel converters and parallel lines, if part of a two-terminal system, are discussed. The converters are assumed to use thyristor valves as the bridge arms, with gapless metal oxide arresters for insulation co-ordination and to have power flow capability in both directions. Diode valves are not considered in this report. This second edition cancels and replaces the first edition, published in 1991, and constitutes a technical revision. It includes the following main changes with respect to the previous edition: it concerns only line-commutated converters;isignificant changes have been made to the control system technology; some environmental constraints, for example audible noise limits, have been added; the capacitor coupled converters (CCC) and controlled series capacitor converters (CSCC) have been included.