prefabricated substation

This product fully complies with the GB/T17467-2010 "High Voltage/Low Voltage Prefabricated Substation" standard. Suitable for urban public distribution, street lighting, industrial and mining enterprises, urban buildings, residential areas, mountainous areas, hotels, parks, and construction sites, it can achieve ring network and terminal power supply methods.

Model meaning

① Prefabricated substation

② Layout: M represents the "target" font and P represents the "product" font

③ Design serial number

④ Rated voltage on high-voltage side (kV)

⑤ Rated voltage on low-voltage side (kV)

⑥ Rated capacity of transformer (kVA)

Usage environment

● For users in high-altitude areas with an altitude of 1000m, please specify in the order that this product can meet the requirements of users with an altitude below 4000m;

● Environmental temperature: -30C~+40C;

Temperature: High monthly average temperature+30C, high annual average temperature+20C;

● Relative humidity: daily average ≤ 95%, monthly average ≤ 90%;

● Seismic resistance level: horizontal acceleration of 0.4m/s2, vertical acceleration of 0.15m/s2;

● Installation location: No severe impact, no severe pollution and chemical corrosion, no conductive dust or explosion hazard in Egypt;

When the normal usage conditions cannot be met, please consult with our company.

Adopting standards

GB/T17467-2010/eqVIEC1300: 1995 High voltage/low voltage prefabricated substations

GB1094-1996/eqVIEC 76: 1993 Power Transformers

GB6450-1998/eqVIEC 726: 1982 Dry type power transformers

GB11022-1999/eqVIEC 60694: 1996 Common technical conditions for high-voltage switchgear and control equipment standards

GB3906-2006/neqlEC398: 1990 3.6-40.5kV AC Metal Enclosed Switchgear and Control Equipment

Product features

The basic structure of the box transformer can be divided into two types: "eye" shaped and "product" shaped. The box skeleton is made of high-quality channel steel and angle steel welded, which has high mechanical strength; The box is made of aluminum

Made of alloy profiles with good anti-corrosion ability, the overall beautiful appearance can be coordinated with the surrounding environment through painting and coloring. The carefully designed bottom lifting device is suitable for installation and transportation

Mobile provides great convenience.

There are independent high-voltage rooms, transformer rooms, and low-voltage rooms inside the box transformer, and the lighting in each room automatically opens with the opening of the door. The high-voltage room is equipped with high-voltage ring network switchgear, which can be customized according to user needs

Select compressed air and vacuum type load switches with "five prevention" functions. When using current limiting high-voltage fuses, when a certain phase fuse blows, the load switch will automatically open,

To avoid faults caused by phase loss operation.

The transformer room adopts a forced cooling device with natural ventilation and automatic control, and has an exhaust system that automatically controls with temperature changes, which can effectively control and reduce the temperature inside the box

Meet operational requirements. According to user requirements, anti condensation devices can also be used, and tracks can be installed to facilitate entry and exit from the doors on both sides of the transformer room. The box material can prevent rainwater and

Dirt entry, suitable for long-term outdoor use, with anti-corrosion, waterproof, dustproof performance, long service life, simple maintenance, and beautiful appearance.

Transformers can be dry-type or oil immersed, and oil immersed transformers can be either fully sealed with or without an oil conservator.

The low-voltage room has the overall function of a complete set of switchgear for users to choose from, and can be combined arbitrarily.

Shell materials: The shell materials include composite plate, stainless steel, aluminum zinc plated plate, stainless steel plate, and metal carved plate. Environmentally friendly wood, etc.

Structural features: The high-voltage structure is reasonable and compact, and SF6, FZN57, and VHC ring main cabinets can be selected, with a five proof interlocking function. Transformer natural ventilation and automatic air cooling systems are applicable

Dry and oil immersed transformers.

Low voltage room: Multiple structural distribution schemes can be adopted according to user requirements, including power distribution, lighting distribution, reactive power automatic compensation, energy metering, and other functions, equipped with automatic lighting

Clear system, high dust resistance, long service life, simple maintenance, and beautiful appearance.

technical parameter

Product structure diagram

Main circuit scheme diagram

Structural characteristics of 35KV substation

The intelligent combination substation/switching station is a new product independently developed by our company to meet market needs, combined with scientific research achievements and engineering practice experience in the field of power distribution. It provides the best solution for new substations of 110KV, 72KV, and 40.5KV. This product has the advantages of high reliability, miniaturization, pollution-free, low operating costs, flexible combination, convenient installation, automation, maintenance free, simple operation, and unmanned operation. Replacing the traditional engineering scheme of civil engineering substations. It can greatly reduce the investment, land occupation, and construction period of substations, and promote the comprehensive improvement of the operational level of substations. The comprehensive automation system of the substation adopts a decentralized and distributed structure in design, which protects most of the protection. The control function is placed within the switch interval, perfectly combining the compactness of primary equipment with the dispersion of secondary equipment. Information sharing is achieved through computer networks, eliminating all redundant hardware, achieving intelligent and integrated product design, factory oriented production processes, and simplified on-site installation. At the same time, elevate the technical level and safe and stable operation level of the substation to a new level.

Integration of secondary equipment

The primary and secondary equipment of 10KV shall be matched according to the unit and assembled in the switchgear. The 35KV side protection device is centrally assembled into a screen, which combines the high-voltage switchgear and comprehensive automation device together and places them in the same box to form an integrated complete set of power supply and distribution equipment. There is no need for buildings inside the substation, and the land area is greatly reduced. Capable of achieving unmanned requirements, with reasonable initial investment

Industrialization of construction process

The design, manufacturing, installation, and internal electrical wiring of the 10KV equipment and comprehensive automation system of the substation are all completed within the company. Before leaving the factory, the entire set is debugged and qualified. Transport as a whole and arrive at the site. Thus, the factory construction of the substation was achieved.

Simplify on-site installation

Small size, convenient installation and construction. On site work only requires completing the cement foundation construction of the substation box. After the box is in place, the 10KV primary cable and 35KV side secondary signal can be connected to the corresponding equipment, greatly reducing the workload of on-site construction.

Beautiful appearance

The appearance is beautiful and generous, which can coordinate with the surrounding environment and play a role in beautifying the city.

Small footprint

Building a conventional 35KV substation covers an area of approximately 800m2, while using a box type substation can occupy a minimum area of up to 100m, which is only 1/10 of the area occupied by a substation of the same scale, in line with the national policy of land conservation.

Strong reliability

The "five prevention" functions are complete, easy to maintain, and operate safely and reliably.

The comprehensive automation system is a layered and distributed structure, divided into substation layer and bay layer. The communication network is used to connect the layers, and the protective measurement and control devices in the bay layer are installed separately in the primary equipment. The monitoring system above 35KV level adopts a centralized group screen structure, and the entire device generally consists of a transformer measurement and control protection screen, a line measurement and control protection screen, a metering screen, and a DC screen.

Integrated automation system of substation

The intelligent combination substation adopts a series of microcomputer protection devices. It integrates multiple functions such as protection, measurement, control, detection, and communication, and is suitable for substations, terminal stations, and urban and rural power grid systems of various voltage levels.

System characteristics

● Layered and distributed systems. Reduced control cables, simplified the system, reduced control room area, and saved overall costs.

The protection setting can be modified online by the panel, backend machine, or remote control, with multiple setting methods and convenient maintenance.

Multiple forms of backup power supply automatic switching modes are available to meet user needs to the greatest extent possible.

It can be connected to the five defense system to complete the five defense and recording functions.

Equipped with complete self inspection and alarm functions.

Provide multiple configuration functions to facilitate system configuration and functional expansion.

Multi interface mode, can communicate with other devices such as microcomputer protection and digital kilowatt hour meters, and can use various remote communication protocols to communicate with the dispatch center.

Adopting a highly reliable CAN bus industrial control field network, it completely overcomes the bottleneck phenomenon of master-slave network structure.

The network protection technology based on CAN bus can achieve fast protection of any equipment in the station without increasing investment, especially the fast protection of the busbar, which greatly reduces the impact of faults on equipment, improves power supply reliability and equipment reliability.

Hardware standardization, modularity, and flexible combination as needed.

Each monitoring unit uses a unified hardware platform.

Ultra low power design.

● High reliability. All components are made of CMOS industrial grade chips, which have strong anti-interference ability and extremely low failure rate. They have unique wiring design, electromagnetic shielding, software and hardware redundancy, and transient characteristics

Suppression enables the device to have high anti-interference ability, ensuring timely and effective handling of any component damage without affecting normal operation under any circumstances.

The basic plane should be leveled;

The number and orientation of embedded steel pipes in the foundation are determined by the user based on the number and orientation of incoming and outgoing cables;

The cables inside the foundation should be fixed by brackets, so the embedded iron components and support components should be grounded;

The number of grounding rods is determined by the soil conditions, and it is necessary to ensure that the grounding resistance is less than 4 ohms;

The connection between the grounding electrode and the grounding wire shall be welded and coated with asphalt for corrosion prevention;

The position of the step steps should be determined by the user according to the position of the box transformer door opening (refer to the layout plan);

The depth of the pit and other dimensions can be determined based on the installation conditions;

The basic diagram is for reference only, and users can modify it according to actual situations.