European Box Type Substation

European Box Type Substation

European-style box substation (35kV equipment outdoor layout, 10kV equipment box installation), compared with the same scale integrated substation (35kV equipment outdoor layout, 10kV equipment layout indoor high-voltage switch room and central control room), reduces investment by 40%-50%.
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European box-type substation, also known as outdoor complete substation or combined substation, has been widely valued due to its advantages of flexible combination, convenient transportation, migration, installation, short construction period, low operating cost, small footprint, no pollution, and maintenance-free. In the construction (renovation) of rural power grids, it is widely used in the construction and renovation of 10-110kV small and medium-sized substations (distribution) stations, factories and mines, and urban and rural mobile operations. Because it is easy to penetrate into the load center, reduce the power supply radius, and improve the terminal voltage quality, it is particularly suitable for rural power grid transformation and is known as the target model for substation construction in the 21st century.

Substation Transformer Paramenters

No.

Items

Unit

Value

1

Rated voltage

Primary

kV

40.5

Secondary

12; 0.69

Subsidiary circuit

V

110; 220; 380

2

Rated current

High voltage circuit

A

400~1250

Low voltage circuit

630~3150

3

4

Rated frequency

Hz

50

Rated power

kVA

1250; 1600; 2000~20000

5

Rated insulation level

High voltage side

Power frequency

kV

95

impact

185

Low voltage side

Power frequency

42

impact

75

6

Rated short time withstand current

High voltage side

kA

20; 25; 31.5

Low voltage side

25; 31.5; 40

7

Rated peak withstand current

High voltage side

50; 63; 80

Low voltage side

63; 80; 100

8

Insulation level of transformer

Power frequency

kV

65

Impact

185

9

Insulation level of subsidiary circuit

2

Substation and transformer

 European box-type substation Features:

1.Advanced technology, safe and reliable
The box body adopts domestic leading technology and craftsmanship. The outer shell is generally made of galvanized steel plate.
The frame adopts standard container materials and manufacturing techniques. It has good anti-corrosion performance and guarantees no corrosion for 20 years. The inner sealing plate adopts aluminum alloy buckle plate, and the interlayer adopts fireproof and thermal insulation materials, air-conditioning and dehumidification devices are installed in the cabinet, and the operation of the equipment is not affected by the natural climate environment and external pollution, and can ensure normal operation in the harsh environment of -40℃~+40℃.
The primary equipment in the box adopts domestic technology-leading equipment such as unit vacuum switchgear, dry-type transformer, vacuum circuit breaker (spring operating mechanism), etc. The product has no exposed live parts and is a fully insulated structure, which can completely achieve zero electric shock accidents. The whole station can realize oil-free operation with high safety.
2.High degree of automation
The whole station is intelligently designed. The protection system adopts the integrated automatic device of the substation and is installed in a decentralized manner. It can realize "four remotes", namely, remote measurement, remote signaling, remote control, and remote adjustment. Each unit has independent operation function and relay protection. Complete functions, remote setting of operating parameters, control of humidity and temperature in the box, to meet the requirements of unattended.
3.Flexible combination
Due to the compact structure of the European-style box change, each box constitutes an independent system, which makes the combination flexible and changeable.
4.Beautiful appearance
The box shell adopts aluminum-zinc steel plate and container manufacturing technology. The appearance design is beautiful. Under the premise of ensuring the reliability of power supply, by choosing the shell color of the box-type substation, it is easy to coordinate with the surrounding environment. It is especially suitable for urban construction.

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Electrical substation transformer

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