11/11/2020 | Press release | Distributed by Public on 11/10/2020 22:37
November 11, 2020
Sumitomo Electric Industries, Ltd.
*This press release was originally published in Japanese on October 26, 2020.
Sumitomo Electric Industries, Ltd. is pleased to announce that its sales of power line communication (PLC) string monitoring units for solar power plants have exceeded 10,000 units (as of the end of October 2020). The Company started to sell these units on a full scale in 2016 and has continued to expand its product lineup and services. The units have been introduced to 81 solar power plants (power generation capacity: 561 MW in total).
To enable solar power plants to maintain high power output over a long period (20 years) under the feed-in tariff (FIT) scheme,*1 it is essential to predict and prevent failures based on appropriate operational management and maintenance checkups. For preventive purposes, it is effective and important to perform continuous monitoring to accurately detect change points rather than gathering momentary and fractional information obtained by I-V curve (Current-voltage characteristic) measurement and thermal monitoring using drones. Sumitomo Electric's PLC string monitoring units feature low initial cost, stable transmission of monitoring data and high lightning resistance. Continuous monitoring of solar power grid enables stable operation of plants over the long term.
[Features of the PLC String Monitoring Units]
Sumitomo Electric remains committed to offering highly convenient string monitoring units and auxiliary services to contribute to the widespread use and stable operation of solar power generation.
*1 Under this scheme, electricity utilities are required to purchase electricity generated by renewable energy sources (e.g., solar power generation) for a certain period at a price designated by the national government.
*2 A string is the minimum unit of solar panels that are connected in series.