Photovoltaic-Diesel Complementary Power Generation System

I. Industry Pain Points and Solutions
Limitations of Traditional Power Supply Models
Oilfields are often located in remote areas, where diesel generator sets present the following issues:

High operational costs: Regular refueling, oil changes, and engine maintenance are required, consuming significant manpower and resources
Severe environmental pollution: Diesel combustion produces pollutants like nitrogen oxides and particulate matter, resulting in high carbon emissions
Poor Power Stability: Inability to generate electricity at night or during inclement weather necessitates large-capacity batteries or backup generators
Innovative Solution
This system employs a complementary photovoltaic (PV) + diesel power architecture. Through intelligent control technology, it achieves dynamic energy allocation, delivering three core advantages:

Energy Savings & Emissions Reduction: PV handles daytime base load, while diesel engines operate only during peak demand or nighttime, reducing fuel consumption by 40%-60%
Simplified O&M: PV modules require no maintenance for 25 years, while diesel engine annual runtime decreases by over 60%

II. Technical Highlights Analysis
1. Peak-Shaving Soft-Switching Technology

Dynamic Power Allocation: MPPT controllers track PV maximum power points in real-time, prioritizing clean energy usage
Seamless Switching Mechanism: Soft-start technology enables smooth diesel engine integration during PV output shortages, with voltage fluctuations <1%
Intelligent Load Management: Output power automatically adjusts based on pumpjack operating cycles to prevent energy waste
2. Online Seamless Switching Design

Dual-Power Redundancy Architecture: Photovoltaic and diesel systems operate in parallel via ATS automatic transfer switch
Millisecond Response: Switching time <20ms ensures uninterrupted power to sensitive equipment like lighting and heating pumps
Islanding Protection: Automatic isolation during grid failures safeguards operational personnel

III. Application Scenarios
Customized for Oilfield Pumping Units

Load Adaptation: Energy storage batteries buffer power fluctuations tailored to the intermittent load characteristics of pumping units
Environmental Adaptability:
Photovoltaic Modules: IP54-rated for extreme temperatures from -25°C to +55°C
Diesel Generators: Equipped with high-altitude modules for stable operation at 5000 meters elevation
Installation Convenience: Modular design enables rapid on-site deployment

Case Study
Pilot Project at a Certain Oilfield

Configuration: 50kW PV + 100kW Diesel Generator + 200kWh Energy Storage
Results:
Average daily power generation increased by 35%
Diesel consumption reduced by 62%
Equipment failure rate decreased by 80%