What is a prefabricated substation?
Time：2025-02-27 Auther：ZTelec-www.ztelectransformer.com
Prefabricated substation is a box-type transformer structure introduced from Europe in the late 1970s. The high-voltage switchgear, transformer body, and low-voltage switchgear are pre-assembled in the overall box shell in the factory. The transformer body of the prefabricated substation can be a dry-type transformer or an oil-type transformer. Generally, dry-type transformers are more commonly used for prefabricated substations.
prefabricated substation Structural features
The structural features of prefabricated substations include:
High-voltage room: It usually contains high-voltage load switches, high-voltage fuses and lightning arresters, etc., for power outage operations and overload and short-circuit protection.
Transformer room: Dry-type or oil-type transformers can be installed, and the transformers are fully sealed.
Low-voltage room: It contains low-voltage air switches, current transformers, ammeters, voltmeters, etc., for power distribution and control.
Features and advantages of prefabricated substations
Flexible combination
The prefabricated substations has a compact structure. Each box constitutes an independent system, which makes the combination flexible and changeable. Users can choose to use a combination of all box installations or some box installations according to actual needs.
Low operating cost
The prefabricated substation has efficient and stable performance, which can reduce power loss and reduce operating costs. At the same time, its maintenance-free feature also reduces the subsequent maintenance costs.
No pollution, maintenance-free
The prefabricated substation does not produce pollutants during operation and is environmentally friendly. At the same time, its internal equipment is carefully designed and manufactured. So it has high reliability and durability and does not require frequent maintenance.
High reliability
The prefabricated substation adopts a fully enclosed structure. And the protection level usually reaches IP54 or higher, which effectively prevents the intrusion of dust, moisture and foreign objects. It can operate stably in harsh environments such as high temperature, low temperature, and humidity.
Main application areas of prefabricated substations
Urban and rural power grid transformation
Prefabricated substations are widely used in urban and rural power grid transformation due to their flexible combination, easy transportation, convenient installation, low operating cost, no pollution, and maintenance-free. It can penetrate into the load center, reduce the power supply radius, and improve the terminal voltage quality, which is particularly suitable for rural power grid transformation.
High-rise buildings and residential areas
Prefabricated substations are suitable for urban high-rise buildings, urban and rural buildings, residential areas and other places. And it is used to receive and distribute electrical energy in the distribution system. It has a neat appearance, strong environmental adaptability, and can coexist harmoniously with the surrounding environment .
Industrial and Mining Enterprises
Prefabricated substations are also widely used in industrial and mining enterprises, small and medium-sized factories, mines and oil fields, and temporary construction sites. It can meet the power needs of these places and provide convenient power solutions.
Importance of prefabricated substations
As a key component of the power grid, the prefabricated substation plays a very important role. It can reduce the voltage from 400 volts to 220 volts or 110 volts to meet the needs of various power-using places such as cities, villages, and factories. This power transformation method enables the power grid to provide the electricity needed by thousands of households and businesses, providing safe, reliable and stable electricity services for people’s lives and work.
