electricity network: 'solar installations leave electricity network in peril' | kolkata news - times of india - battery energy storage system

Kolkata: As solar installations become more affordable, households start generating electricity and pushing it into the grid, power companies such as CESC and West Bengal state Distribution Co. , Ltd (WBSEDCL)
Facing the challenge of managing their network as one
The flow of electricity.
"Traditionally, electricity flows from power generation units to households through transmission lines and distribution networks.
All safety devices
Switches, relays, fuses-
Installed to protect the network is one-way.
But when thousands of households with rooftop solar equipment begin to push power into the grid, two-way flow will make the safety mechanism redundant.
When the voltage or current exceeds the safety threshold, the trip of the fuse, relay may be unstable.
This is dangerous because it puts the whole network at risk.
Alekhya Datta, a researcher at the Institute of Energy and Resources, said: "The cost of failure may be very large (Teri).
Teri recently completed a trend study using annual time series load data in the case of balance and imbalance
Equipment provided for selected feeder lines.
The study was conducted by state power and non-
The conventional energy sector. As a short-
To protect the network from damage, it is recommended that the home install smart inverters for the solar roof system to keep the voltage stable.
It will conduct a second study of protection coordination, in which vulnerable points in the network will be identified and one-way relays replaced with two-way relays.
"There is also a need to limit the reverse power flow (
From household to grid)
Prevent failure of the protection system.
Smart inverter is a short
Long-term strategy to provide free protection for distribution companies, but in the long run, distribution transformers must be changed from manual tap switch to automatic/on-
"Load the tap switch," Datta said . ".
Studies have shown that due to revenue growth, economic growth rates and other variables such as renewable energy, distribution transformers are already close to overload status, load patterns change rapidly and need to be charged to electric vehicles.
In order to solve this problem, Teri proposed a battery energy storage system (BESS)
At the localization level, it is mainly the downstream of the distribution network.
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