The operational reliability of thermal and hydroelectric power units of major power generation enterprises in
In the first half of 2007, the equivalent availability factor of thermal power units owned by the five large nationwide power generation groups (namely China Huaneng Group, China Datang Corporation, China Guodian Corporation, China Power Investment Corporation and China Huadian Corporation) and major local electric investment companies reached 92.17 percent, which is 0.79 percent higher year over year; average unscheduled outage time and outage hour per unit-year is 0.89 time and 45.30 hours, respectively, reduced 0.18 time and 0.15 hours compared with the same period of the previous year, respectively; average forced outage time and outage hour per unit-year is 0.82 time and 39.11 hours, respectively, and the average annual utilization hours of generating units reached 5,548.52 hours, a drop of about 300 hours year over year.
In the first half of 2007, the equivalent availability factor of hydropower units owned by the five large nationwide power generation groups and major local electric investment companies reached 91.92 percent, which is 0.50 percent higher compared with the same period of the previous year; average unscheduled outage time is 0.09 time, a drop of 0.18 year over year; the average unscheduled outage hour per unit-year varied greatly to 14.99 hours, an increase of 12.43 hours compared with the same period of the previous year due to longer outage of some of the large hydropower generating units; average forced outage time and outage hour per unit-year is 0.06 time and 0.37 hours, respectively, and the average annual utilization hours of generating units reached 3,608.55 hours, a drop of about 50 hours year-on-year.
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