PV-Storage-Diesel AC/DC Coupled Microgrid Solution
Summary: Photovoltaic + diesel generator + energy storage + grid industrial and commercial AC/DC hybrid microgrid, balancing economy and resilience.
Solution Overview
For industrial and commercial parks with an existing grid but high volatility, the AC/DC coupled architecture flexibly integrates PV, diesel generators, energy storage, and the main grid.
Key Points
- PV and batteries are directly connected on the DC side, reducing conversion for high efficiency
- Easy multi-port expansion
- Both cost-effectiveness and resilience
- Phased retrofit without affecting the existing power distribution
Applicable Scenarios and Challenges
Single grid-connected power supply is affected by electricity prices and curtailment; pure off-grid is costly. It is necessary to balance cost-effectiveness and uninterrupted power resilience.
VGRID System Composition
- Power Conversion System (PCS): The core of AC/DC coupling, enabling unified dispatch of multiple sources.
- Static Transfer Switch (STS): Seamless grid-connected/off-grid switching to protect critical loads.
- Battery Energy Storage System (BESS): Multi-timescale support, combining arbitrage and backup power.
- Energy Management System (EMS): Optimizes based on electricity prices, load, and carbon targets.
- Microgrid Power Switchgear (MPS): AC/DC coupling cabinet with integrated multi-ports.
Core Value
- Both cost-effectiveness and resilience
- Multi-energy complementarity, maximizing green power
- Uninterrupted power for critical loads
- Can be built in phases according to the park
Typical Applications
Suitable for industrial parks, bonded zones, and industrial and commercial clusters requiring highly reliable power supply.
Delivery and Support
VGRID POWER (VGRID) provides integrated delivery from on-site assessment, system design, core equipment manufacturing (PCS/STS/BESS/MPS) to commissioning and remote O&M. Welcome to contact us for customized solutions and quotations.
FAQ
What is the difference between AC/DC coupling and pure AC coupling?
AC/DC coupling connects PV and batteries directly on the DC side, reducing conversion stages, improving efficiency, and facilitating multi-port expansion.
Is retrofitting an existing campus complicated?
MPS/PCS supports nearby grid-connection point access and phased construction without affecting the existing power distribution.
What campus size is AC/DC coupling suitable for?
It is suitable for commercial and industrial campuses ranging from hundreds of kW to several MW.
What is the role of diesel in a coupled system?
It serves as backup and peak shaving, with the EMS optimizing its minimum operating duration.
