The New Energy and Industrial Technology Development Organization (NEDO) is collaborating with Nissin Electric on a demonstration research project focused on micro substations.
The initiative aims to reach a low environmental impact power supply in areas of India with underdeveloped grids.
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The project is part of the subsidised International Demonstration Project on Japan’s Technologies for Decarbonisation and Energy Transition.
Located on the outskirts of Delhi, the micro substation is owned by TATA Power-Delhi Distribution Limited (TATA Power-DDL).
The installation will convert extra high-voltage (EHV) power from transmission lines directly into low-voltage power, supplying it to the surrounding area.
The project’s objective is to verify the reliability and effectiveness of this type of power supply while establishing technology that ensures stable electricity delivery to regions where the grid is either underdeveloped or non-existent.
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By GlobalDataNissin Electric is testing micro substations using its transformer technology to provide low-voltage power from high-capacity transmission lines.
The company’s advanced transformer technology can directly obtain low voltage power (240V) from EHV power sources, such as 66kV or higher transmission lines, through high-capacity power voltage transformers (PVTs) for efficient power supply.
A typical micro substation includes protective devices, switchgear, lightning arresters and a distribution board alongside the PVT.
This configuration allows the acquisition of 100 kilo-volt-amperes of low-voltage power per substation.
It can adequately supply between 50 and 100 households without requiring a conventional large-scale distribution substation.
The advantages of Nissin Electric’s micro substations include reduced operational costs due to the elimination of generator refuelling and maintenance needs.
These substations require less space compared to traditional setups and offer significant environmental benefits, with a 45% reduction in CO₂ emissions compared to diesel generators.
By deploying micro substations equipped with PVTs, stable and cost-effective power can be supplied without constructing large-scale infrastructure.
Nissin Electric intends to expand this technology across India and into other regions facing similar energy challenges.
