IT & Automation
Plant availability and safety relies on automation
Generators are investing in advanced automation solutions to keep their plants working at maximum availability and safety.
Los generadores están invirtiendo en soluciones de automatización avanzada para mantener sus centrales en funcionamiento con la máxima disponibilidad y seguridad.
Erzeuger investieren in fortschrittliche Automatisierungslösungen, um ihre Anlagen mit maximaler Verfügbarkeit und Sicherheit zu betreiben.
M
etso has won a contract to modernise the automation and field instrumentation at Helsingin Energia’s Salmisaari A and B power plants in
Helsinki, Finland. Te investment will ensure high availability and safety at the plants long into the future. New automation will replace the existing automation system from 1984 at Plant B, which produces electricity and district heat, and the system from 1986 at Plant A, which produces district heat. In the future, the plants’ main fuel of coal will be replaced with wood pellets. Tese will initially make up 5-10 per cent of the fuel mix.
Metso’s extensive turnkey delivery will consist of two of its own DNA automation systems, field instrumentation, a safety interlocking system, replacement of programmable logic controls, field engineering, an emissions reporting tool to meet present directives, installation, testing and commissioning. Modernisation at Plant B has already begun with start-up planned for next year; work will begin on plant B in 2015. Metso earlier delivered automation to Helsinki Energia’s Kellosaari back-up power
plant, its coal storage facility, and for its water treatment facility. All of these will eventually use a single reporting system supplied by Metso, with all power plants and processes operating from the same control room with uniform user interfaces. As one of the largest energy companies in
Finland, Helsingin Energia supplies electric energy to about 400,000 customers and meets more than 90 per cent of the district heat demands of the capital city. Siemens has supplied 18 DCS units to Wuhan
Kaidi Electric, the second biggest company in China involved in biomass power plants. Most of those new biomass plants are equipped with Siemens turbines and have an electrical output of 30 MW. As feed, they use locally abundant farm and wood waste, which supports local farmers as well as protecting the environment. Te generated power is used in rural areas. Te first plant, Haubei Chongyan Biomaass, has been successfully in operation since April 2012. For the 16 newly constructed biomass power
plants, Wuhan Kaidi needed a reliable supplier for the DCS for 18 units. Tough the units of those biomass power plants are small, they still require a control system with essentially the same functionality as one for a regular sized plant. As the biomass power plants are mostly built in rural regions, on-site service for these locations is inconvenient and costly. Terefore Kaidi needed a reliable control system that canalso be accessed remotely. Siemens’ solution is its
SPPA-T3000 DCS. Te turbine control systems for the plants, which are spread apart, can be integrated into the DCS and operated via the same HMI. Furthermore, the control system automates boilers, electrical systems and water treatment - as well as the ash and dust removal and auxiliary sections of the turbines at all of the plants. “As our new biomass power
plants are built in rural areas, it is important for us that they run
Fig. 1. Foxboro Evo improves operational insight and gives engineers more speed and flexibility to deal with unplanned events.
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