Amorphous alloy dry type transformer

Low noise and space saving. One of the biggest advantages is low no-load loss, energy saving and environmental protection. Generally, the no-load loss of transformers made of amorphous alloy is only about 20% of that of transformers made of ordinary silicon steel sheets, so as to reduce the emission of harmful gases such as CO, so and NOx.

The amorphous transformer produced by CEEG can be described as an "upgraded version" of similar products:

CEEG amorphous transformer adopts American DuPont Nomex Paper as insulation material, with high-temperature rise grade, good moisture-proof performance, flame retardant and non-combustion supporting;

The low-voltage coil is wound on the high-strength polyester imide cylinder with imported high-quality copper foil and H-class insulating material. Nomex insulating paper is used between layers. The coil is impregnated into a solid whole by VPI vacuum pressure, and the upper and lower ends are sealed with resin. The coil has high mechanical strength, strong short circuit resistance and thermal shock resistance, long product life and high dust and salt spray resistance.

220kV railway traction transformer

The connection group of single-phase traction transformer is i-i. according to the capacity or user requirements, the internal wiring can be series or parallel respectively.

V / V connection traction transformer

V / V connection transformer is one of the forms of direct supply railway traction transformer. It is the specific application of single-phase transformer in railway traction; This type of transformer has two structural forms. One structural form is that two single-phase transformers are placed in the same oil tank, i.e. three column structure. The coils of the two single-phase transformers are respectively sleeved on the side columns of the two iron cores. There is no coil on the middle column of the iron core, which only constitutes the magnetic flux circuit; Another form is the joint use of two transformers, namely four column structure; In these two structural forms, there are two single-phase transformers with equal capacity and unequal capacity.

V / X wiring traction transformer

V / X connection transformer is one of the main forms of traction transformer for at power supply railway. It has the same characteristics as VV connection traction transformer. V / X connection is the integration of VV connection and at pure single-phase connection technology. In terms of design and manufacturing, it is simpler than the traditional Scott connection traction transformer. This type of transformer has two structural forms. One structural form is that two single-phase transformers are placed in the same oil tank, that is, the double bodies are the same oil tank structure; The other is the joint use of two single-phase transformers. In these two structural forms, there are two single-phase transformers with equal capacity and unequal capacity.

Three-phase balanced traction transformer

The principle of a balanced traction transformer is shown in the vector diagram:

It can be seen from the above figure that the high-voltage side inputs a three-phase symmetrical power system, and the low-voltage side outputs a two-phase power system with equal amplitude and phase angle difference of 90 °; The key technology is reflected in the connection of each coil on the low voltage side, the matching of coil turns, and the calculation of current and impedance.

Compared with single-phase traction transformers and three-phase V / V traction transformers with the same capacity, the negative sequence current of the former is only 50% of the latter, so many users use 220kV three-phase V / V traction transformers to reduce the impact of negative sequence current. If the balanced traction transformer is selected, when the capacity of the two output arms is close, the negative sequence current is almost zero, which is the most ideal.

Autotransformer

two × Application form of 27.5kV autotransformer under at power supply mode;

It is mainly used for passenger dedicated lines and high-speed railways with a speed greater than 200km / h;

It is used together with traction transformer for at power supply mode, with an average of 10 km;

Combined with the main transformer of the (at) power supply mode, interference of the electromagnetic field generated by rail to adjacent communication lines can be reduced.

Intelligent transformer

Modular Intelligent prefabricated cabin substation makes the construction of your substation simpler and more flexible,

Integrated services make the project investment and construction cycle short, safe and efficient

Product features and advantages:

Design customization

Customized according to the actual needs of the project site environment

Prefabricated modular, flexible and fast assembly

The manufacturing, assembly, test and joint commissioning of all electrical equipment are completed in the factory and modular assembly is carried out on site

Intelligent monitoring integration

Realize the integration of electrical monitoring, video monitoring, environmental monitoring and other intelligent detection according to customer needs

System service integration

Realize integrated integrated platform services for background monitoring and SCADA system, substation intelligent monitoring system, fire control monitoring system, video monitoring system, environmental monitoring system, etc

Main electrical equipment and system composition

Various medium voltage switchgear of 40.5kV and below

Power and distribution transformer

Low voltage switch cabinet

Medium and low voltage frequency conversion cabinet, reactive power compensation cabinet and filter cabinet

Secondary relay protection panel, background control panel and field engineer station

UPS consists of uninterruptible power supply, secondary DC panel shell and auxiliary system

Shell, base, base plate and grounding

-Welding of channel steel main body, angle steel and steel beam support

-The primary and secondary cable room is designed under the bottom plate, and the electrostatic bottom plate of the secondary compartment is designed

-Ring equipotential grounding copper bar

-The wall adopts galvanized sheet and spraying

-Heat insulation and heat preservation -- polyurethane fireproof and heat preservation material and refrigerator heat preservation process

-Door - with latch and escape push rod lock

-Air conditioning and ventilation - micro positive pressure air conditioning, ventilation, dehumidification and dust prevention are adopted

Electrical fire alarm and fire fighting system

Intelligent smoke detector, audible and visual alarm, propane gas fire extinguishing, fire protection system linkage

Wireless temperature measurement, partial discharge, infrared thermal imaging and other electrical intelligent monitoring systems

Wireless temperature measurement of high-voltage cables and electrical connection points, partial discharge monitoring of key components, intelligent monitoring of infrared thermal imaging, parameter threshold setting and alarm push

Intrusion, environment and video surveillance system

Door intrusion, temperature and humidity, water level and video monitoring integrated service

Auxiliary power distribution and lighting system

Maintenance, socket, air conditioning power supply system, internal lighting, external lighting and emergency lighting

Flameproof transformer

Technological innovation

1. German cylindrical corrugated, national patent product;

2. Nomex Paper Insulation System;

3. Oblong iron core column and non encapsulated winding structure;

4. Unique wiring cavity design;

5. It is fastened at eight points and can go down the well vertically.

Performance characteristics

Full corrugated cylindrical structure

The national patent adopts a full corrugated cylindrical flameproof shell to improve the strength of the shell, and the shell can withstand 1MPa pressure

Core technology of DuPont grade C Nomex Paper

The transformer body adopts non encapsulated winding structure and American DuPont class C Nomex insulation material to effectively ensure the electrical performance of the coil and the short-term overload capacity of the transformer

VPI vacuum pressure dip paint

After the winding of the coil is completed, it has been impregnated with international advanced VPI vacuum pressure paint and dried and solidified for many times, which effectively improves the insulation performance and mechanical strength of the coil.

Flameproof structure and stable performance

Advanced design and testing means and perfect production and processing technology ensure the stable, safe and reliable performance of flameproof structure.

Imported programmable controller

The high and low voltage switch of mobile substation is controlled by imported programmable controller (PLC), which has high reliability and stability.