The world's first 1500MVA/1000kV UHV AC transformer

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Quick Details

Place of Origin: HeBeiBrand Name:

CNBM

Model Number:

SFZ10-63000 / 110

Usage:

Power

Phase:

Three

Coil Structure:

Toroidal

Coil Number:

3 Winding

Capacity:

50000 63000 80000 100000 120000 180000

Rated Voltage:

1000kV

Connection Symbol:

YNd11 Dyn11 YNyn0d11

Tank:

Cover type or Bell type

OLTC:

MR or ABB or SMS

Packaging & Delivery

Packaging Detail:Mainbody --naked Disassembled parts -- crate
Delivery Detail:3 months

Specifications

 

1. CESI certificate
2. High short-circuit withstand
3. Low loss, PD and noise
4. CTQC certificate
5. No leakage

 

 Description

 

The application of 1500MVA/1000kV AC UHV Transformer can significantly improve the economy of the UHV substation, and matches well with the transmission capacity of UHV lines, which has wide prospect of application. Because of its large capacity and large volume, the whole transportation weight with nitrogen is about 470-490 tons, and due to the restricted transport conditions, the transportation becomes the critical issue for application of the 1500MVA/1000kV UHV AC transformer. In order to make the products applicable to any UHV substation in our country, the state grid of corporation of China set the "A study of easy-transport large capacity UHV Transformer” as a key scientific research projects, and entrusted BTW to carry out the research.

During the process of research and development, BTW adopted the advanced design technology and modular design, the transformer can be transported disassembly and with advantages of compact core and winding body, less transportation weight and low transportation cost, effectively solves the need of UHV construction in the transportation restricted areas. By using the most advanced 3D magnetic field calculation software, BTW performed detailed analysis and calculation for the magnetic flux leakage and eddy current loss of the transformer coil, iron core and oil tank steel structures. Besides, by using of the advanced electric field calculation software, BTW performed detailed analysis and calculation of main longitudinal insulation, and mastered the arrangement of the main longitudinal insulation of large capacity UHV transformer and the control of distribution of winding magnetic flux leakage. All of which make the products with low loss, low noise, small volume, strong anti short circuit ability, no local overheating and other significant advantages, and guarantee the long-term safe and stable operation.

The world's first on-site assembled large capacity UHV Transformer’s right at the first time once again filled the gap in the field of UHV transformer research after Chinese transformer industry overcame the difficulty of integral transport of 1500MVA/1000k transformer, which marks BTW has fully occupied the world transformer industry technical peak. The successful development of the product filled the gaps in the domestic technology and met the urgent need of UHV construction application in our country, greatly improved the technical level and manufacturing ability of BTW in terms of UHV Transformer products.

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Q:Three-phase transformer how to calculate the current, ah, the formula is?
For example: 10KV / 0.4KV, 500KVA transformer Primary current: I1 = 500 / (1.732 * 10) = 28.9A Secondary current: I2 = 500 / (1.732 * 0.4 = 721.7A
Q:The type of transformer and where the different transformers are used
Q:Transformer turns around the number and how much V is calculated
2, seeking coil turns Primary coil n1 = 220 ╳ 9.8 = 2156 turns Secondary coil n2 = 8 ╳9.8 ╳ 1.0 = 82.32 desirable for 82 turns 1.05 in the calculation of the secondary coil turns is the pressure drop when a load is considered
Q:The zero line of the transformer can be connected with the ground wire. Why not leave it?
Transformer ground is a neutral point directly grounded, and then there are protective grounding, just with it. The rest of the place, in addition to protecting the ground, the power system can no longer be grounded
Q:Transformer voltage range of 10.5 ± 2 * 2.5% kV and 10.5 ± 5% kV What is the difference
10 kV supply voltage is generally 10 ~ 10.7 kV, a long time too high voltage will cause the transformer insulation overheating, shorten the service life. 10.5 ± 2 * 2.5% kV range is 10.25 ~ 10.75 kV, 10.5 ± 5% kV 10.5 ± 5% kV 10 ~ 11 kV, the general power supply voltage is also the highest in 10.7KV, if the end of the line, with the The transmission line will gradually decay, if the end of 10.7, then the export of the transformer I am afraid to smoke, so we generally master substation bus voltage in 10.4 ~ 10.6
Q:Is the transformer a power adapter?
It depends on the transformer voltage, current, power and other data can be suitable for your job requirements of a machine. Such as computers
Q:Can dry transformers and distribution cabinets be placed in the same room?
But do not recommend dry-type transformers and distribution cabinets in emissions The reasons are as follows: Transformer operating procedures and low-voltage distribution cabinet operating procedures are not the same. This arrangement is not conducive to operational management. If it is civil engineering, housing area is relatively tight, you can use this approach. For industrial projects, especially sewage treatment plants and other municipal projects, the new construction of the land is still relatively well, there is no need and together. Transformers high noise, high heat dissipation, and low-voltage distribution cabinet together, to consider air conditioning and ventilation and other factors. Nor energy saving.
Q:Transformer and the middle of what is the difference
Often referred to as the transformer is the frequency transformer, is used to change the size of the AC voltage electrical equipment. It is based on the principle of electromagnetic induction, with the same frequency, between two or more windings, the exchange of AC voltage and current to transmit electrical energy of the static electrical equipment. In the week is the IF transformer or inductance coil, is a fixed resonant circuit with a transformer, the resonant circuit can be fine-tuning within a certain range, so that access to the circuit can achieve a stable resonant frequency. Transformer (Transformer) is the use of electromagnetic induction principle to change the AC voltage of the device, the main components are primary coil, secondary coil and core (core). The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage regulator (magnetic saturation transformer) and so on. According to the purpose can be divided into: power transformers and special transformers (electric furnace change, rectifier, frequency test transformer, voltage regulator, mine transformer, audio transformers, IF transformers, high-frequency transformers, impact transformers, instrument transformers, electronic transformers , Reactors, transformers, etc.). Circuit symbols commonly used as the beginning of the number. Example: T01, T201 and so on.
Q:Transformer stop power operation, the neutral point must be grounded
Transformer stop power operation, the neutral point must be grounded. Because China's 110KV transformer is mostly neutral grounding system, the main transformer neutral grounding switch, in order to protect the sensitivity of the protection device, the main transformer neutral grounding switch in the operation often open; but in the main transformer operation , In order to prevent the operation of the over-voltage "affect" the main transformer insulation, it must be closed ground switch. For the side of the power supply of the power transformer, when the switch is not full-phase pull, at the time, if the neutral point is not grounded the following hazards: (1). Transformer power supply side of the neutral point to ground voltage rise up to the maximum phase voltage, which may damage the transformer insulation; (2) Transformer between the high and low voltage coils, this capacitor will cause high voltage to the low voltage "overvoltage";
Q:Transformer 1KVA can load how much security, how to calculate the formula
This is based on the voltage count, such as three-phase 380V. 1KVA current is basically 1.5A

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