Part 11: Definitions, principles and rules for HVDC system
(IEC 99/322/CD:2021); Text in German and English Class/Status:
Released: 2022-07 Published: 2022-06-03
VDE Art. No.: 1100762
End of objection deadline: 2022-08-03
This standard applies to High-voltage direct current (HVDC) systems. It specifies the principles on the procedures for the determination of the specified withstand voltages, creepage distance and air clearances for the equipment and the installations of these systems. This standard gives the insulation co-ordination principles related to line commutated converter (LCC) and voltage sourced converters (VSC) HVDC systems. The main principles of this standard also apply to other special converter configurations of LCC, such as capacitor commutated converter (CCC) as well as the controlled series compensated converter (CSCC) etc. This standard applies to insulation co-ordination of equipment connected between the converter a.c. bus (including the a.c. harmonic filters, the converter transformer, the circuit breakers) and the d.c. line side. The line and cable terminations in so far as they influence the insulation co-ordination of converter station equipment are also covered. This standard applies only for HVDC applications in power systems and not for industrial conversion equipment. Principles and guidance given are for insulation co-ordination purposes only. The requirements for human safety are not covered by this standard.
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