The 12 kV/0.4 kV - 630 kVA prefabricated substation is applied in the high-end residential area in the south, effectively solving the power supply bottleneck and ensuring a stable power supply

Recently, the YB1-12/0.4-630kVA pre-assembled substation of Tianrun Electric was successfully put into operation in the Zhejiang Future City community, providing stable power supply for residents and becoming a typical case of upgrading the distribution network to serve the people.

With the improvement of living standards, the popularization of high-end household appliances and the peak electricity consumption in winter and summer, the existing power distribution facilities are unable to meet the growing load, affecting the power supply quality. To address this issue, the power supply unit, in collaboration with the community and property management, has established a working group. Through 24-hour load monitoring, they identified the problems and, based on the community's positioning and future electricity demand, decided to adopt a 12 kV/0.4 kV - 630 kVA prefabricated substation. The equipment is factory prefabricated and fully assembled and debugged before leaving the factory, significantly shortening the construction period - from transportation to operation, it only takes 5 days, reducing the construction period by about 70% compared to traditional methods, and significantly minimizing the impact on residents' lives.

During the construction period, the team adopted a "shift work + closed-loop management" model to reduce noise interference and precisely explored to avoid underground pipelines and protect existing facilities. Three rounds of full-load tests were completed before operation to ensure that the parameters met the standards.

The project has addressed the current issue of insufficient power supply. Its modular design supports subsequent expansion, allowing for flexible adjustments as the number of residents increases or equipment is upgraded, thus avoiding repetitive construction. The power supply department stated that it will promote this model to all high-end and newly-built communities in the city, establishing a "load monitoring + proactive operation and maintenance" mechanism to predict demand in advance and enhance service efficiency.

With the advancement of urbanization, prefabricated substations, due to their fast construction, stable operation and easy maintenance, will play a significant role in the construction of smart cities, contributing to the establishment of an efficient, reliable and green distribution network.

Edit:   Luna.Li

From:  Zhejiang tenrony electric Co.,Ltd

The Author — Mr. Cai Dongpo

About Our Chief Engineer

Mr. Cai Dongpo is the Chief Engineer of Tenrony. Since joining the company in 2007, he has devoted his entire career to technical design and engineering, building extensive, hands-on expertise across electromechanical design projects. Over nearly two decades, he has played a key design role in a series of major industrial and infrastructure programs — including the China Coal Pingshuo Group, China Coal Pinglu Group, the CRRC (CNR) locomotive manufacturing production line, the CRRC (CSR) production line, and the Sunan Shuofang International Airport expansion project. His deep technical command and proven project track record form a cornerstone of Tenrony's engineering strength.