Honeywell’s Experion Process Knowledge System (PKS) was selected to control operations for a new supercritical, 660-MW coal-fired power plant near Bangkok. The plant currently is under construction in Map ta Phut, Rayong, and will be operated by Gheco-One Ltd., an independent power producer affiliate of Glow Group, a Thailand-based group of companies that supply electricity and steam.
The plant, scheduled to begin operation in 2011, will supply power to the state-owned Electricity Generating Authority of Thailand, which manages most of the country’s power transmission network. The new facility is expected to increase production capacity in Thailand by 50 percent.
Supercritical plants reduce fuel consumption while maximizing power generation. Supercritical boilers operate with startup valves and waterwall pressure controls as opposed to drum-level controls, this helps them produce power more efficiently than standard boilers, says Honeywell. However, because they operate at higher pressures and temperatures, a reliable control system is needed to protect against spurious boiler trips that can lead to safety incidents and equipment damage.
“Supply reliability and production efficiency are key objectives for Gheco-One because maintaining customer trust is paramount,” says CI Choi, senior manager at Doosan Heavy Industries Co., the main contractor that selected Honeywell for the project. “We selected Experion for this project because it is a proven control platform used at hundreds of sites around the world with a strong track record for safety and reliability, and for improving production efficiency.”
Gheco-One operators will use Experion to control the Map ta Phut facility’s boiler operations as well as the balance of the plant. Also, Experion can help reduce raw material costs with optimized control capabilities, which meets Gheco-One’s objective of producing energy with a minimal amount of fuel consumption.