This paper analyzes the harm and cause of unbalance of three-phase load of distribution transformer, and puts forward some measures to solve the unbalance.

A new breakthrough in UHV technology! Successful test of new generation a million volt transformer.
On Oct. 28, TBEA (20.730, -0.94, -4.34%) was informed that the new generation of direct outlet 1000kV AC extra-high voltage transformer produced by TBEA recently passed all the tests at one time, and TBEA became the first company in China to pass all the tests of the new generation of megavolt transformer at one time.
In order to meet the high reliability of high-altitude equipment, TBEA set up a special research group and passed the product development at one time after many special demonstrations and guidance from the State Grid and industry experts.
The product adopts a new direct outlet device for the first time and fixes it on the body, avoiding the risks brought by the process of disassembling and reassembling on site after the test of indirect outlet device; adopts a new coil insulation structure for the first time to further improve the insulation characteristics, short-circuit resistance, temperature rise distribution and workshop production process of the product, especially to meet the requirements of transformer temperature rise in high altitude areas; adopts a new oil tank explosion-proof design concept for the first time, significantly improving the transformer's explosion-proof performance. With the application of these new technologies, the technical performance of the new generation of mega-voltage transformers surpasses that of its predecessors, reducing the total loss by more than 80kW and significantly improving the energy efficiency level of the products.
The successful test of the new generation of million volt transformer not only improves the safety and stability of China's AC transformer operation in high altitude areas, but also plays a very important role in the consumption of clean energy and ensuring the stable operation of the power grid.
Source: China Science and Technology Network
CANWIN also the equipment supplier for TBEA ，If you have demand for CRGO cutting machine and slitting line and transformers, welcome to contact us.

Gas protection is the main protection for transformer internal faults. It can act sensitively to transformer inter-turn and inter-layer short circuits, iron core faults, internal bushing faults, internal winding disconnection, insulation deterioration and oil level drop. When a fault occurs inside the oil-immersed transformer, the arc will decompose the insulating material and generate a large amount of gas, which flows from the oil tank to the oil pillow, and its intensity varies with the severity of the fault, reflecting the air flow and oil flow The action protection is called gas protection, also called gas protection. During the operation of the transformer, due to internal faults, sometimes we cannot identify and take measures in time, which is easy to cause some accidents. After the protection of the gas relay, the occurrence of similar incidents can be avoided to a certain extent.

Why was Edison alone and not a team of people who invented the electric light bulb?
Why was Tesla the only one who discovered electricity and not a team?
Why did Coulomb discover the effects of magnetic fields alone and not a team?
Because only a very few people can endure loneliness and devote themselves to research without seeking for them, companies that truly have the ability to invent and create often have nothing to do with the company's business scale and the number of R&D personnel, but only with the obsession of team members and years of years. It's all about perseverance!
It's harvest season again, good morning everyone!
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1. What is a transformer?


In the AC circuit, the device that increases or decreases the voltage is called a transformer. The transformer can convert any value of voltage into the voltage value we need with the same frequency to meet the requirements of electric energy transmission, distribution and use.


For example, the electricity from a power plant has a low voltage level, and the voltage must be increased before it can be transported to a distant power consumption area. The power consumption area must be reduced to a suitable voltage level to supply power equipment and daily electricity. Equipment.

1. What are the main components of oil-immersed transformers?




Answer: The main components of the transformer are: iron core, winding, fuel tank, oil pillow, respirator, explosion-proof pipe, radiator, insulating sleeve, tap changer, gas relay, thermometer, net oil, etc.

The power transformer is the hub of transmission and distribution of electric energy, and the core component of the power grid. Its reliable operation is not only related to the power quality of the majority of users, but also to the safety of the entire system. The reliability of a power transformer is determined by its health status, not only depends on the design and manufacture, structural materials, but also closely related to the overhaul and maintenance. The problem of improving the short-circuit resistance of transformers in power systems is discussed.

Commonly used transformer cores are generally made of silicon steel sheets. Silicon steel is a kind of steel made of silicon (silicon is also called silicon), and its silicon content is 0.8 to 4.8%. The iron core of the transformer is made of silicon steel because silicon steel itself is a magnetic material with strong magnetic permeability.

Question:
"There is an old-fashioned transformer of 1000KVA with an existing load of about 200KW. If a new load of about 600KW is to be added, can this transformer withstand it?"

The main materials of the transformer body include magnetic circuit materials, circuit materials, insulating materials, structural materials, etc.

Canwin Wishing you a happy New Year in 2022.