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[Studies in Computational Intelligence 481] Artur Babiarz, Robert Bieda, Karol Jędrasiak, Aleksander Nawrat (auth.), Aleksander Nawrat, Zygmunt Kuś (eds.) - Vision Based Systemsfor UAV Applications (2013, Sprin

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288 A. <strong>Nawrat</strong> et al.<br />

S, VA<br />

4,510<br />

4,500<br />

4,490<br />

4,480<br />

4,470<br />

4,460<br />

4,450<br />

4,440<br />

4,430<br />

4,420<br />

4,410<br />

Inductive meter without modem<br />

0 10 20 30 40 50<br />

samples<br />

Fig. 5. Fragment of measurement series registered for a 1-phase <strong>in</strong>ductive meter<br />

The results presented below account for: real power P1h, reactive power Q1h<br />

and apparent power S1h, obta<strong>in</strong>ed for the basic harmonic of the measured current.<br />

Table 5. Comparison of typical power loss values for 1-phase <strong>in</strong>ductive meters<br />

1-phase <strong>in</strong>ductive meters<br />

Power loss (typical values)<br />

Meter type Number P 1h , W Q 1h , Var S 1h , VA<br />

PI1 1 1.22 -4.84 4.99<br />

PI1 2 1.19 -4.73 4.87<br />

PI1 3 1.12 -4.32 4.46<br />

Table 6. Comparison of maximum power loss values for 1-phase <strong>in</strong>ductive meters<br />

1-phase <strong>in</strong>ductive meters<br />

Power loss (maximum values)<br />

Meter type Number P 1h , W Q 1h , Var S 1h , VA<br />

PI1 1 1.25 -4.88 5.04<br />

PI1 2 1.23 -4.77 4.93<br />

PI1 3 1.15 -4.38 4.53<br />

4.2 Results from 3-Phase Inductive Meter Measurements<br />

The results presented below account for: real power P1h, reactive power Q1h<br />

and apparent power S1h of each phase, obta<strong>in</strong>ed for the basic harmonic of currents<br />

measured consecutively <strong>in</strong> all three <strong>in</strong>put voltage circuits of a 3-phase supply<br />

meter.

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