PD CLC/TS 50654-2:2018

European foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
4 Coordination of HVDC Grid System and AC Systems
5 HVDC Grid System Characteristics
6 HVDC Grid System Control
7 HVDC Grid System Protection
8 AC/DC Converter Stations
9 HVDC Grid System Installations
10 Models and Validation
11 HVDC Grid System Integration Tests
Bibliography

Defines requirements, that are specific for HVDC Grid Systems, some requirements are considered applicable to all HVDC systems in general, i.e. including point-to-point HVDC systems.

These Guidelines and Parameter Lists to Functional Specifications describe specific functional requirements for HVDC Grid Systems. The terminology “HVDC Grid Systems” is used here describing HVDC systems for power transmission having more than two converter stations connected to a common d.c. circuit.

While this document focuses on requirements, that are specific for HVDC Grid Systems, some requirements are considered applicable to all HVDC systems in general, i.e. including point-to-point HVDC systems. Existing IEC, Cigré or other documents relevant have been used for reference as far as possible.

Corresponding to electric power transmission applications, this document is applicable to high voltage systems, i.e. .only nominal d.c. voltages equal or higher than 50 kV with respect to earth are considered in this document.

NOTE While the physical principles of d.c. networks are basically voltage independent, the technical options for designing equipment get much wider with lower d.c. voltage levels, e.g. in case of converters or switchgear. Both parts have the same outline and headlines to aid the reader.