Japan’s Tokyo Electric Power Company began testing Dynamic Line Rating in 2020 as a solution to accelerate renewables integration and defer grid reinforcements.
The pilot project runs for a 12 months period, where Ampacimon’s solution is investigated. The ability of the system to provide accurate real-time and forecast DLR, as well as monitor conductor sag and temperature are being evaluated, for the Japanese context of using power line ratings in grid operation.
The installation of the system was completed in March 2020. TEPCO Holdings, through its new subsidiary TEPCO Renewable Power Inc., aims at generating 100 Billion JPY in revenue by 2030 through the development of offshore wind power generation and other renewable sources.
Below is a picture of some of the installed sensors: 3 sensors are shown.
It is a 66kV double circuit line but the loading is not equal, so both circuits are monitored.
The 3rd one is an ice accretion sensor, which is installed as a pilot to collect field data. The ice sensor is not used for DLR in this case.
In total 6 Sense-D were installed, 3 on each circuit for the DLR.
They are also testing the intraday and day-ahead forecast DLR software.