Loss reduction measures for distribution transformers

Reasonable selection of energy - saving distribution transformers

The loss of transformer can account for 20%-25% of the loss of power system, so actively promoting and using low loss distribution transformer has become an important measure to reduce the loss of power system.

In terms of distribution transformers, the transformer industry has used S9 series products to phase out THE S7 series products, because S9 series of transformer no-load loss than S7 series products average 11%, load loss average 28%, and 59 products short circuit resistance than S7 series improved. Compared with S9 series, S11 series of distribution transformers reduce the loss of no-load by about 30%, and can recover the difference investment in two years of operation, so it has good economic benefits.

In addition, in the distribution transformer, amorphous alloy core transformer has the effect of loss reduction and energy saving, amorphous alloy transformer no-load loss than S11 series transformer no-load loss reduction 70%~80%, is the development direction of distribution transformer, but due to the current price is too high, the investment benefit is lower than S11 series transformer.

Reasonably arrange the operation and maintenance of distribution transformers

(1) Arrange the equipment inspection regularly every month to check whether the distribution transformer bushing is clean and whether there are cracks, damages and discharge traces.

(2) Clean the bushing of the distribution transformer regularly once a year to keep the lead connectors of the pile heads on the high and low voltage sides in good condition to reduce leakage loss and contact loss.

(3) Strengthen maintenance management, shorten and reduce maintenance power outage, outage time and times. Allocate labor force reasonably, implement unified maintenance, organize all units to promote "comprehensive maintenance" and "zero maintenance", in order to reduce unnecessary power outages and outages.

(4) Regularly carry out load measurement of distribution transformer, measure three-phase load current and neutral line current, and timely adjust unbalanced load.

Reducing the loss of distribution transformer is an effective way to reduce the cost of power supply, is a very important work in the distribution network, only take effective measures to reduce the loss of distribution transformer, can make the distribution transformer economic operation, so as to bring higher social and economic benefits.