Multimillion dollar contract to upgrade the control system at Weston Unit 3

Symphony Plus provides a low-risk, high quality, state-of-the-art automation solution
ABB has won a multimillion dollar contract from Wisconsin Public Service (WPS) to upgrade the control system at the Weston Unit 3 Power Plant at Rothschild, Wisconsin.

Weston Unit 3 is a 360 MW Combustion Engineering tangential-fired drum boiler supplying steam to a GE turbine-generator. The balanced-draft unit is equipped with two electrically driven boiler feed pumps and a fabric filter baghouse. It uses coal as the main fuel and natural gas for auxiliary fuel and ignition. Weston Unit 3 was originally commissioned in 1981.

ABB will supply a Symphony™ Plus control system based on the new high-performance Symphony Plus HPC800 DIN-mounted process controller. The solution includes the powerful and ergonomic S+ Operations Human Machine Interface (HMI), server and networking equipment, interfaces to existing systems, and a high fidelity simulator. As the turnkey supplier, ABB is responsible for all aspects of the project including control system design, implementation, testing, site installation and start-up.

“We evaluated several bidders based on technology, turnkey experience, project implementation plan and cost. ABB proved to be the right choice for our project, based on those criteria,” said Drew Bain, Project Manager. “We were particularly impressed with ABB’s turnkey engineering resources, their approach to high performance graphics and the Symphony Plus control system.”

ABB’s design and implementation activities will include review of existing plant systems and operation, I/O list development, hardware configuration, control logic, high-performance graphics, networks and interfaces. ABB will also provide the following retrofit engineering and site services: wiring/raceway and cabling design, demolition and panel/cabinet modifications, power supply distribution and grounding, plant drawing generation and modification, installation supervision, site coordination, craft labor, start-up and commissioning.

Symphony Plus

Symphony™ Plus is the latest generation of ABB’s total plant automation platform for the power and water industries. This powerful, versatile and scalable platform is designed to maximize plant efficiency and reliability through automation, integration and optimization of the entire plant.It enables plants and personnel to perform at maximum efficiency. It balances performance objectives like asset availability, operational reliability and production efficiency with business goals like asset life extension, carbon reduction and regulatory compliance. In so doing, it provides plant owners with an essential tool for achieving sustainable profitable growth. There are more than 6,500 Symphony Plus installations in operation all over the world, more than 4,500 of which are in power and water applications.