The total active power loss of the network transformer includes the winding resistance loss and
no-load loss of the transformer.
Harmonic Impact on Distribution Transformer
No-Load Loss. IEEE Transactions on Industrial Electronics, 57(1), 193- 200, (2010).
Kladas, Harmonic Impact on Distribution Transformer
No-Load Loss,IEEE Transactions on Industrial Electronics, 57(1), 193-200, (2010).
These
no-load losses for hypoid gears can be calculated according to Mauz formula:
Experiments show that the values of
no-load losses are most affected.
Its "sleep feature" smartly disconnects transformers at night, eliminating
no-load losses which can provide customers US$800,000[sup.3] of savings over the lifetime of a 100MW solar plant.
The parallel resistance is estimated via no load test with presumption that entire
no-load losses are dominantly due to the iron losses [12].
No-load losses can be approximately estimated, multiplying the total
no-load losses of transformers by average service hours.
Other advantages of the toroidal core construction over the conventional stacked lamination type include size and weight reduction of up to 50 percent, higher efficiency, quiet operation, low
no-load losses, and cooler operating temperature.