How to choose a power supply system based on a wind generator

1. Connecting the inverter to the grid (grid-connected inverter)

Advantages:

Net metering: Excess electricity generated by your system can be sold back to the utility grid, often earning credits on your electricity bill.
Energy storage: The grid acts as a virtual battery, storing excess energy and providing it when your generation is low.
Effectiveness: generally there is no need for expensive battery storage systems. Reduced environmental impact: Efficiently uses renewable energy sources and helps reduce the overall carbon footprint.

Disadvantages:

Regulatory Compliance: Requires compliance with local utility codes, permits, and sometimes additional equipment, which can be expensive and complex.
Mains Dependency: If the grid goes down (such as during a power outage), a grid-connected inverter system will typically not provide power unless there is a backup battery.
Variable energy costs: Energy prices and policies can change, affecting the financial benefits of selling excess electricity.

Advantages:

Network independence: ideal for remote locations where network connectivity is not possible or reliable.
Energy Security: Provides power even during power outages, making it suitable for critical applications that require uninterrupted power.
Autonomy: full control over the production and consumption of electricity without dependence on utility companies.
Cost savings in remote areas: avoids the potentially high costs of extending network infrastructure to remote locations.

Disadvantages:

Energy storage requirements: A battery is usually required to provide a stable power supply when generation is low, which can be expensive and require maintenance.
System complexity: Managing an autonomous system can be more complex due to the need for energy storage, backup generators, and ensuring that power supply matches demand.
Initial Investment: Higher initial costs due to the need for batteries and possibly additional equipment such as charge controllers.

Summary of differences:

Grid-tied inverter: connects to the grid, provides clean metering, reduces dependence on batteries, but is dependent on the grid for power continuity during outages.
Standalone inverter: connects directly to the load, requires a battery for continuous power operation, provides independence from the utility grid, but requires higher initial and maintenance costs.
Choosing the right option: Consider a grid-tied system if: You have reliable grid access, want to reduce your electricity bill with net metering, and prefer a simpler system without the need for battery storage.
Consider a standalone system if: You are in a remote area without reliable access to the power grid, you need energy independence and security, and you are willing to invest in and maintain a battery storage system.