China’s Huaneng Dandong Unit 1 power plant completes major control system upgrade
New digital plant networking integrates functions, adds new wireless instrumentation.
Dandong, China – A digital plant network, predictive maintenance software, a wireless network, temperature and pressure transmitters, and preservation of earlier investments all were included in a two-unit upgrade at the Huaneng Dandong power plant. The plant selected PlantWeb digital plant network platform from Emerson Process Management
Unit 1 has already migrated to Ovation from its older WDPF system. During that process the plant was able to preserve much of its earlier investment, existing I/O cards, field cabling, terminations and cabinets, as well as their intellectual property in the form of control logic, graphics, and database.
The migration took place during a 50-day scheduled outage that began last September. Since its return to commercial operation in early November, Huaneng Dandong Unit 1 has been running with its Ovation system that integrates boiler and turbine operations. Coordinated control of the boiler and turbine enhances unit-wide compatibility, improves unit stability, responsiveness, and thermal efficiencies.
The new system performs key data acquisition, monitoring, and control functions:
Boiler control system;
Sequence control system;
Electrical control system;
Furnace safeguard system;
Turbine and feedwater control; and
Approximately 6,000 I/O points.
“This modernization project was vital to our ability to continue to efficiently and reliably supply electricity to the Liaoning Provincial Power Grid,” says Zhiyong Wang, instrumentation and control specialist, Huaneng Dandong power plant. “Emerson’s automation and control technologies are already utilized by several plants owned by Huaneng Group, so we had great trust and confidence in selecting them for this project.”
The plant will also use Emerson’s AMS Suite predictive maintenance software and a Smart Wireless package featuring Rosemount wireless pressure and temperature transmitters to measure the cycle water temperature.
Edited by Peter Welander, process industries editor
Control Engineering News Desk
Register here to select your choice of free eNewsletters .
Annual Salary Survey
After almost a decade of uncertainty, the confidence of plant floor managers is soaring. Even with a number of challenges and while implementing new technologies, there is a renewed sense of optimism among plant managers about their business and their future.
The respondents to the 2014 Plant Engineering Salary Survey come from throughout the U.S. and serve a variety of industries, but they are uniform in their optimism about manufacturing. This year’s survey found 79% consider manufacturing a secure career. That’s up from 75% in 2013 and significantly higher than the 63% figure when Plant Engineering first started asking that question a decade ago.