Rural Power Grid Upgrade Project
Project Background
A rural power grid upgrade project in a county aimed to address unstable voltage and insufficient power supply capacity in remote villages, covering residential electricity consumption and agricultural irrigation needs across 12 administrative villages.
Solution
Dongguan Electric's 10kV/0.4kV oil-immersed distribution transformers were installed on outdoor utility poles and distribution transformer platforms. Featuring excellent moisture resistance and heat dissipation performance, the transformers are well suited to the complex outdoor environments commonly found in rural areas.
Project Results
Voltage compliance rate increased from 85% to 99.8%, completely resolving low-voltage issues during peak irrigation periods.
No-load losses were reduced by 15% compared with conventional transformer models, saving approximately 23,000 kWh of electricity annually and supporting low-carbon grid modernization goals.
The equipment has operated fault-free since commissioning, providing long-term, reliable power supply for rural communities.
Industrial Park Power Distribution Project
Project Background
An intelligent manufacturing industrial park in Shandong Province, primarily occupied by machinery processing and electronics manufacturing enterprises, required a highly reliable power distribution system capable of handling significant load fluctuations and ensuring uninterrupted power supply.
Solution
Dongguan Electric oil-immersed distribution transformers were deployed throughout the park to provide 10kV to 0.4kV power distribution services for production workshops, manufacturing lines, and industrial equipment.
Project Results
Stable short-circuit impedance effectively mitigated voltage fluctuations caused by frequent equipment start-ups and shutdowns, achieving a power supply reliability rate of 99.95%.
Long maintenance intervals and outdoor installation capability eliminated the need for complex protective structures, significantly reducing operational and maintenance costs.
Ensured continuous and stable operation of production lines, minimizing losses caused by power disturbances.
Petrochemical Industry Power Supply Project
Project Background
A petrochemical company expanded its facility by adding new storage areas and auxiliary production workshops, requiring a safe and reliable power supply for utility equipment located outside hazardous explosion-proof zones.
Solution
Dongguan Electric outdoor oil-immersed distribution transformers were installed in dedicated power distribution areas within the plant. The transformers feature anti-pollution and corrosion-resistant properties, making them suitable for demanding petrochemical environments.
Project Results
Stable insulation performance enabled reliable operation in environments with dust and mildly corrosive gases.
Excellent heat dissipation ensured continuous full-load operation during high-temperature summer conditions, supporting stable operation of utility systems.
Fully complied with petrochemical industry safety standards and provided dependable electrical support for safe plant operations.
Rural Photovoltaic Power Station Grid-Connection Project
Project Background
A distributed photovoltaic poverty alleviation power station required a solution to step up low-voltage electricity generated by solar panels and connect it to the 10kV distribution network while supplying supplemental power to nearby villages.
Solution
Dongguan Electric oil-immersed distribution transformers were utilized as the core equipment for voltage boosting and power distribution, effectively accommodating the intermittent output characteristics of photovoltaic generation systems.
Project Results
Successfully adapted to fluctuations in solar power generation, ensuring efficient voltage boosting and grid integration while maintaining annual transmission losses at an industry-leading level.
Outdoor installation design eliminated the need for additional transformer buildings, reducing overall project investment costs.
Low operating noise ensured no disturbance to nearby residents, achieving efficient integration of clean energy generation and local electricity demand.
