Pertamina Geothermal Energy to replace control systems of steamfield (SAGS) systems at Lahendong

Indonesian state-owned utility PT Pertamina Geothermal Energy (PGE), has contracted Japanese Yokogawa Electric Corporation’s Indonesian subsidiary, PT Yokogawa Indonesia, to replace the existing control systems for the steamfield above ground system (SAGS) at the Lahendong geothermal power plant in North Sulawesi Province.

Powered by six generation units (1-6), the Lahendong power plant is capable of delivering 120MW of electricity, making it one of the largest geothermal power plants in Indonesia. In this project, Yokogawa will supply the CENTUM (TM) VP integrated production control system and a large number of wireless transmitters, pressure transmitters, and flowmeters for the SAGS of units 1-4. In addition to supplying the systems and field instruments, the company will also manage the engineering, installation, commissioning, operator training, and oversee the integration of systems. When Yokogawa completes work on this project, both the SAGS and the power generators of units 1-4 of the plant will be controlled by Yokogawa’s systems. The newly integrated system will potentially allow the future enablement of Industrial-Internet-of-Things devices, facilitating further productivity and efficiency improvements.

The equipment used in geothermal power plants must be robust and capable of operating in the presence of corrosive substances and gases. For such applications, Yokogawa provides highly reliable systems and instruments that support the remote monitoring, diagnosis, and adjustment of devices in the field.

“In the Asia-Pacific region, Yokogawa has participated in dozens of geothermal power generation projects and we are excited to partner again with PGE. The implementation of our system for the SAGS will enable seamless integration to the power generating units and ensure more reliable operation. Geothermal potential in Indonesia is still large, so we hope through such projects we can continue harnessing geothermal power as a renewable energy source.”, so Koji Nakaoka, a Yokogawa Vice President and head of the Global Sales and Industrial Marketing Headquarters.

Source: Yokogawa