SOLAR PARKS
A Solar photovoltaic power plant (MW scale), also known as a solar park, is a large-scale
photovoltaic system (PV system) designed for the supply of power into the electricity
grid. The solar power source is via photovoltaic modules that convert light directly
to electricity.
Most Solar power plants are ground mounted PV systems. They can either be fixed
tilt or use a single axis or dual axis solar tracker. While tracking improves the
overall performance, it also increases the system's installation and maintenance
cost. A solar inverter converts the array's power output from DC to AC, and connection
to the utility grid is made through a high voltage, three phase step up transformer.
SPV ROOFTOP
In grid connected rooftop or small SPV system, the DC power generated from SPV panel
is converted to AC power using power conditioning unit and is fed to the grid depending
on the local technical and legal requirements
These systems generate power during the day time which is utilized by powering captive
loads and feed excess power to the grid. In case, when power generated is not sufficient,
the captive loads are served by drawing power from the grid.
The concept of rooftop solar is based on the scale of the PV plant rather than the
fact whether it is situated on a roof/terrace or not. Hence, the definition of RTS
also includes small solar plant on the ground. The main objectives of these type
of plants are as follows. • Decrease the consumption from the utility GRID. • Contribute
to the generation of clean energy to the GRID.
METERING SCHEMES
• NET metering: Link: Sikkim Net metering policy
• GROSS METERING
The solar off- grid system converts sunlight into electricity without connecting to the local utility grids. These are ideal for the areas without public grid access. Off-grid solar energy system includes storage solution for batteries or fly wheel energy storage which allows excess electricity from wasting and can be conserved for future uses.
Applications
• Electricity supply in rural and remote areas - Off-grid solar systems can
facilitate independent, long-term and sustainable electricity generation in rural
and remote areas.
• Power back up in areas with frequent electricity cuts - A number of places
in India face frequent power cuts due to power transmission malfunctions, which
can hamper operations of companies and public institutions. Off-grid solar systems
can provide an economical and viable long-term backup solution to overcome the problems
occurring during frequent power cuts.
Advantages
• These self-sustainable systems can work independently and do not rely on the grid.
• They generate enough power that can be stored and used at night or when the power
grid is down
• These are ideal for remote areas where there is no power access from the grid.
• Grid failures and shutdowns will not affect your power supply.
A home lighting system/solar home system aims at providing solar electricity for operating lights and/or fan or energizing DC operated portable TV sets for specified hours of operation per day. The LED Lamps give higher brightness at very low power consumption and as a result LED based Solar LED home light system requires very small solar panels and batteries compared to the conventional systems. The LED's used in the luminary has a life of more than 50,000 hrs which avoids the costly lamp replacements for several years. Solar LED home lighting system harnesses the power of the Sun to provide reliable, cost-effective electricity wherever it is needed. This solar home lighting system supply electricity for lighting, entertainment, and information to homes that are not connected to grids or where electric supply is quite erratic. Solar Home systems are an excellent solution for household level electrification in rural areas.
Advantages
• Safe and easy to install.
• Free from noise, smoke, and pollution
• Required very little attention
• Possible to expand the system in future
• Mobile Charging
• Night Lamp
• Digital Battery Status