Transformer damp treatment method

10kva step up transformer damp treatment method is: the use of transformer normal operation of the no-load loss and load loss as a transformer drying treatment of heat source, the transformer insulation paper in the water gradually penetrate into the transformer oil, the use of online oil filter device to remove the transformer oil And then the transformer oil enters into the vacuum vessel through the inlet filter, and the transformer oil is ejected by using the vacuum pressure nozzle (the absolute vacuum in the vacuum vessel should be controlled at about 1 500 Pa), and the pressure nozzle is used to eject the oil film Gas and water vapor transfer to the role of the air, thus completing the degassing of insulating oil and dehydration process. The purified oil is collected at the bottom of the vessel and filtered through the filter element and re-injected into the dry electric transformer. During operation, a container and the corresponding valve should be installed in the lower part of the return oil filter to detect and discharge air bubbles to prevent gas from entering the transformer. On-line transformer body moisture treatment methods, with a short power outage, heating uniformity, not easy to cause transformer insulation damage and other characteristics, in place in full safety measures, to avoid being processed transformer gas protection malfunction.

Cause Analysis of Temperature Variation during Operation of Transformer

The main cause of the overall temperature change in the single phase step voltage regulators operation is the loss of the transformer and the influence of the ambient air temperature. Transformer losses include transformer no-load loss and load loss, the no-load loss in the transformer has been put into operation after the load loss with the transformer load with the size of the change, the greater the single pole transformer load, the more loss, the transformer The higher the temperature rise; the greater the load change, the greater the temperature change of the transformer. In addition from the national electricity load market changes throughout the year the actual situation, the more cold or hot weather, electricity load growth faster, the higher the temperature rise of the transformer; even on the same day, due to changes in day and night temperature and Load peak-valley difference of the superposition of changes, but also caused a significant change in the temperature of the transformer a major factor. As a result of these various factors, resulting in transformer temperature is changing, thus affecting the long-term safe operation of transformer and service life.

Measures of Improving Power Transformer Resistance to Short Circuit

10kva single phase transformer safety, economic, reliable operation and output, depending on their manufacturing quality and operating environment and maintenance quality. This chapter attempts to answer the transformer operation and maintenance process, the effective measures to prevent transformer sudden failure.

The power grid often as a result of lightning, relay protection malfunction or refuse to move and other short-circuit, short-circuit current strong impact may damage the 500kva power transformer, so from all aspects of efforts to improve the transformer short-circuit withstand ability. Transformer short-circuit impact accident statistics show that the cause of manufacturing accounted for about 80%, while the operation and maintenance reasons accounted for only about 10%. The relevant design and manufacturing measures are discussed in Chapter 2, and this chapter focuses on the measures to be taken in the course of operation and maintenance. Operation and maintenance process, on the one hand should minimize the short-circuit fault, thereby reducing the number of shocks suffered by the transformer; the other should be timely testing of transformer winding deformation, preventive measures.

china electrical transformer mainly by the high-frequency transformer core (core) and two or more coils, they do not change position, from one or more of the electrical circuit, through the AC power through electromagnetic induction, Into AC voltage and current. In the electronic circuit plays a boost, buck, isolation, rectification, frequency, phase, impedance matching, inverter, energy storage, filtering and so on. 2. Electronic transformer works - constitute

A simple conventional type transformer consists of a closed magnet and two windings. One of the windings is connected to the AC source and is called the primary winding Np. The other winding can be connected to the load, called the secondary winding Ns. If the primary winding is connected to the power supply of the AC voltage Ui, the transformer is in no-load and the alternating current Io is generated in the primary winding, and Io is called the no-load current.