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AGGREGATED DATA
AGGREGATION RESULTS
VOLTAGE DIPS 2006÷2008

Aggregated data concerning voltage dips in the period 2006÷2008 or across 01/01/2009 will no longer be processed by the system QuEEN
Voltage dips monitored in the period 2006÷2008

National voltage dips average per equivalent point of measurement monitored in 2006
Dips Duration
20-100
[ms]
100-500
[ms]
0.5-1
[s]
1-3
[s]
3-60
[s]
Residual Voltage [%] 90 > u ≥ 85 15.58 5.68 0.47 0.24 0.17
85 > u ≥ 70 17.63 16.94 0.82 0.40 0.07
70 > u ≥ 40 10.99 27.68 0.51 0.12 0.09
40 > u ≥ 10 3.89 13.62 0.26 0.06 0.01
10 > u ≥ 1 0.29 1.27 0.05 0.01 0.01



National voltage dips average per equivalent point of measurement monitored in 2007
Dips Duration
20-100
[ms]
100-500
[ms]
0.5-1
[s]
1-3
[s]
3-60
[s]
Residual Voltage [%] 90 > u ≥ 85 21.02 5.19 0.51 0.28 0.32
85 > u ≥ 70 27.18 16.45 0.90 0.33 0.08
70 > u ≥ 40 15.62 26.26 0.54 0.16 0.07
40 > u ≥ 10 4.70 11.28 0.27 0.08 0.03
10 > u ≥ 1 0.12 0.98 0.04 0.01 0.01



National voltage dips average per equivalent point of measurement monitored in 2008
Dips Duration
20-100
[ms]
100-500
[ms]
0.5-1
[s]
1-3
[s]
3-60
[s]
Residual Voltage [%] 90 > u ≥ 85 17.16 6.32 0.90 0.51 0.49
85 > u ≥ 70 21.97 20.41 1.18 0.34 0.02
70 > u ≥ 40 18.69 33.07 0.73 0.10 0.02
40 > u ≥ 10 3.28 14.01 0.37 0.03 0.01
10 > u ≥ 1 0.32 1.44 0.03 0.02 0.00

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