Under the framework of Ethiopia's "2025 National Electrification Plan", 15 15 15/0.4kV large capacity intelligent compact substations (7 YBW-2500KVA-15/0.4KV and 8 YBW-3150KVA-15/0.4KV) produced by Hengfengyou Electric are becoming the core equipment for energy upgrading in East Africa. China's high-end power equipment provides hardcore support for Ethiopia's "2025 National Electrification Plan" with an innovative model of "modularization+intelligence", writing a new paradigm for China Africa capacity cooperation.
I. Structural Design and Environmental Adaptability of 15/0.4KV Compact Substation
1. Compact modular design: Adopting a modular layout, the high voltage room, transformer room, and low voltage room are integrated into a closed box, with a volume of only 1/5-1/3 of traditional substations, greatly reducing the footprint, especially suitable for limited space scenarios such as cities and scenic spots.
2. Strong environmental tolerance: The box is made of galvanized steel plate and environmentally friendly spraying technology, with excellent corrosion resistance and a service life of over 20 years; Effectively dustproof, splash proof, and anti condensation, suitable for extreme temperature environments ranging from -40 ° C to 50 ° C.
3. Heat dissipation optimization: By designing natural ventilation structures, axial fans, and chimney effects, the transformer can operate at full load under high temperature and altitude conditions. Hengfeng Shuai Electric has specially optimized the heat dissipation scheme for the box transformer, taking into account the high-altitude characteristics of Ethiopia (generally around 3000M). Both the transformer and circuit breaker are suitable for environments at an altitude of 3000 meters.
II. Technical Performance and Safety of 15/0.4KV Compact Substation
1. Efficient and energy-saving: This time, a low loss oil immersed transformer was selected, combined with a reactive power compensation device, significantly reducing electrical energy loss and improving power supply efficiency.
2. High protection level: The high-voltage unit adopts RM6 series ring main unit with IP67 protection level, and the low-voltage unit is equipped with Chint series circuit breakers.
3. Intelligent management: Integrated microcomputer comprehensive automation system, supporting telemetry, remote signaling, remote control, and remote adjustment functions; Equipped with temperature and humidity control, smoke alarm, and remote monitoring interfaces to meet unmanned requirements.
III. Convenient and economical operation and maintenance of 15/0.4KV compact substation
1. Rapid deployment: Factory prefabrication production, on-site assembly and debugging only required, shortening the construction period.
2. Simplified maintenance: The removable shell design facilitates equipment upgrades; Key components such as high-voltage load switches and fuses are designed to be maintenance free or have a long lifespan.
3. Cost advantage: Compared to traditional substations, green technologies such as reducing steel usage and using solid waste materials can lower the overall lifecycle cost.
IV. 15/0.4KV Compact Substation Application Scenarios and Scalability
1. Multi scenario adaptation: widely used in 15kv urban power grids, industrial parks, new energy power stations (such as wind farms, photovoltaic stations) and overseas projects along the "the Belt and Road",
2. Flexible configuration: Vacuum circuit breakers and SF6 load switches can be selected on the high voltage side, while customized distribution solutions (such as metering cabinets and reactive power compensation cabinets) are supported on the low voltage side to meet the energy distribution needs of different users.
V. 15/0.4KV Compact Substation with Green, Low Carbon and Innovative Technologies
Environmentally friendly materials: using environmentally friendly paint, using low VOC (volatile organic compound) water-based environmentally friendly paint, in compliance with the EU RoHS directive and ISO 14001 environmental management system certification.
Technological innovation: Introducing intelligent spraying robots, electric threading machines and other equipment to improve manufacturing accuracy, combined with air thermal power technology to optimize the internal airflow of the transformer box and reduce energy consumption.
HengfengShuai Sales Director Summer（ summer@hengfengyou.com ）The cooperation value of this project far exceeds the commercial scope, and Hengfengyou Electric injects development momentum into Ethiopia with "Made in China". Through modular design, intelligent control, and green technology, a balance between efficient power supply and low-carbon goals has been achieved.