Energy saving and emission reduction is a long-term national policy, transformer is one of the main equipment of the power system, transformer is an electromagnetic energy conversion equipment, but also a large energy consumption, its loss in the network loss accounts for more than 50%, reduce the loss of transformers, the use of energy-saving transformers is the trend of The Times.
Four aspects of transformer energy saving
The energy saving of transformers should be considered from four aspects:
One is to reduce the material consumption of the transformer. Silicon steel sheet, steel, insulation materials, electromagnetic wires, transformer oil, etc., are all necessary materials for transformers, these materials consume a lot of energy, and the saving of these materials indirectly saves energy.
On the other hand to reduce the loss of the transformer.
The loss of transformer includes no-load loss and load loss. In order to reduce the load loss, it is necessary to use more copper material or use transposition wire and other measures; In order to reduce no-load loss and reduce magnetic density, use more silicon steel sheets or use good silicon steel sheets, etc., so that the manufacturing cost of the transformer is increased, and the corresponding sales price is also increased, which must consider how long the money needs to be spent to recover (that is, the recovery period).
Transformer industry “physical examination” report (5)
Distribution transformer capacity can not be “short of weight”
In this summer, many communities in Nanjing frequently suffered power outages. At the peak of electricity consumption, why is the electrical equipment so “not”? This makes residents particularly angry on this hot summer day.
According to the analysis of the power company, since the beginning of summer, due to the rapid rise in electricity demand, insufficient output of the unit, insufficient input of electric energy and other factors, the power supply is tight, the load pressure of the grid is too large, and some lines even overload operation, and the power grid security has been severely challenged.
However, the reporter learned in the investigation that in addition to the above reasons expressed by the power company, the transformer, as one of the key equipment in the field of distribution, should bear a large part of the responsibility.
“Now many distribution transformer manufacturers are interested, and the transformer capacity delivered is far from enough. The user originally purchased a 1000 kVA transformer, but at the time of delivery it was only 900 kVA, or even only 800 KVA. Although it can meet the usual domestic electricity consumption of the community, however, to the peak of electricity consumption, the power consumption will increase, the transformer will be overloaded, and the natural failure will continue.