MASERMIC success in China with STELLIO TECHNOLOGY for Solar Power Plants

MASERMIC and SBP Sonne have successfully completed the commissioning of the 50MW HAMI tower solar plant located in CHINA, XINJIANG province. It is based in the STELLIO heliostat solar field technology. The solar plant can supply energy to the grid for 22 hours thanks to a molten salt storage system, reaching to more than 20,000 homes and industry in HAMI area and reducing the CO2 emissions by 25,000 tons per year. The annual energy generated will be 200GWh.

The HAMI solar plant is the first to incorporate the novel STELLIO technology developed and patented by MASERMIC and SBP Sonne. The STELLIO heliostat is based on a new kinematics concept, a pentagonal structure of 50m2 of mirrored surface, robotic operation through 2 linear electric actuators for Azimuth and Elevation. The characteristics of STELLIO allows to improve the performance of the solar field by 10% thanks to: its high optical quality, precise tracking, very low level of astigmatism, lower atmospheric attenuation, reduction of the effect of shadows and blockages between heliostats, a Slope error < 1.5mrad (2D) and a tracking error < 0.5mrad (1D).

The solar plant installs 45,000 electronic equipment designed and manufactured by MASERMIC both for the automation of each of the 15,000 heliostats of the solar field and for the management of the advanced communications network architecture that provides speed and reliability in the bidirectional transmission of data between the heliostats and the solar field control system (SCS).

The advanced control software (SCS) developed by MASERMIC, allows an integral management of the solar field: Operation, Monitoring, Command, Historical, Maintenance. Integrating an advanced software algorithm for the automatic calibration of heliostats complemented with artificial vision system, allowing to put the STELLIO heliostats into operation automatically without the need of manual intervention, achieving a much faster commissioning of the solar field and improving the safety of operators in the field.

In order to enhance the commissioning, maintenance and innovation capabilities of the STELLIO solar field, MASERMIC has developed a Digital Twin of the Solar Field, hence, while the software development, it can be simulated and contrasted in order to guaranty the correct functionality before starting the solar field commissioning or STELLIO heliostats software upgrade.

MASERMIC has developed a powerful tool to remotely operate the heliostats, hence, any software upgrading or heliostat monitoring in the solar field can be managed in a short time , reducing time intervention and costs.

Thanks to the success achieved with this first tower solar plant based on STELLIO heliostats, MASERMIC and SBP Sonne are managing the development of new solar plants in CHINA.

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