A SURVEY OF THE RELIABILITY OF HVDC SYSTEMS THROUGHOUT THE WORLD DURING 2011 – 2012

摘要

CIGRE Advisory Group B4.04 collects data annually on the reliability performance of HVDCsystems in operation throughout the world. This report is a summary of the reliabilityperformance of HVDC systems in operation worldwide during 2011 and 2012. The summary wasdeveloped through data prepared by utilities that operate the HVDC systems and submitted toAdvisory Group B4.04 of CIGRE Study Committee B4 (HVDC and Power ElectronicEquipment). The report contains data on energy availability, energy utilization, forced andscheduled outages and other data in accordance with a reporting protocol developed by theAdvisory Group. The report contains statistics on the frequency and duration of forced outagesfor the years 2011 and 2012 combined with previous data to present a cumulative average offorced outages by frequency and duration covering the years 1988 to 2012. The categories for thecumulative averages are back-to-back stations and two terminal and multi-terminal stations withone and two or more converters per pole.The data in this report, together with that published in previous reports; provide a continuousrecord of reliability performance for the majority of HVDC systems in the world since they firstwent into operation. This now constitutes about 770 system-years of data on thyristor valvesystems.