In the construction of new energy power systems, the traditional decentralized Oil Immersed Transformer and High and Low Voltage Distribution Cabinet require more than 300 square meters of land and take over 45 days for on-site assembly. Moreover, the interface compatibility issue of Photovoltaic Prefabricated Cabin required for new energy grid connection has led to a 23% delay in project delivery. The fourth-generation modular substation developed by Hualai Electric adopts containerized modular integration technology, achieving a factory pre-installation rate of 98% for main equipment, compressing the on-site installation period to 7 days, and increasing the land utilization rate by more than 60%. 

 Core breakthrough of the product 

Three-level shock absorption interlock system: Double frame beam + honeycomb base design, ensuring that the operating noise of Oil Immersed Transformer is ≤ 45 dB, and the vibration amplitude is reduced by 40% compared to national standards.

Ubiquitous Internet of Things power distribution architecture: Embed edge computing modules in High and Low Voltage Distribution Cabinets, with remote diagnosis response speed reaching 15ms level.

Plug-and-play port for photovoltaic: Unique three-contact waterproof socket, reducing the connection time with Photovoltaic Prefabricated Cabin from 6 hours to 18 minutes. 

Typical application scenarios 

Construction of incremental distribution network in industrial park

Boosting and grid connection node for desert photovoltaic power station

Renovation of power supply and distribution system for offshore platform

Suggestions for operation and maintenance optimization

① Use infrared thermography every quarter to check the temperature balance of the high-voltage compartment

② Before plugging or unplugging the photovoltaic interface, it is necessary to perform verification of insulation coating thickness

③ In environments with humidity > 85%, the equipment bottom electric heating anti-dew module needs to be activated 

As a specialized and innovative enterprise with 32 national patents, the Hualai Electric modular substation has passed the 72-hour full-load shock test certified by KEMA and has achieved an empirical effect of a 37% reduction in the total lifecycle operation and maintenance costs in a 200MW photovoltaic project in Xinjiang. This product is redefining the value standard of compact power hubs and providing a replicable and efficient model for the construction of the new power system.