Invensys Helps Dusseldorf Waterworks in Germany Reduce Costs, Optimize Control and Improve Reporting

Stadtwerke Dusseldorf, the public works department of the city of Dusseldorf, ensures that more than 600,000 people have ready access to water that is safe to drink. The department’s system carries about 55 million cubic meters of fresh water to households and businesses through a pipe system that extends more than 1,700 kilometers. Their water comes from the Rhine River via three plants throughout the region. In the 1990s, the beginning stage of automation was introduced when PLCs were installed in the three plants. However, these systems were not synchronized or coordinated, and no centralized data collection or archive was in place.

The department upgraded and now the three waterworks and the new control systems are interconnected, operating separately and redundantly. Each station runs Wonderware® InTouch® HMI (human machine interface) software in a multi-monitor setup to visually display the operations. With this HMI, engineers view real-time conditions with straightforward graphics, alarms and trending information. Another feature of the HMI is its extensive library of standardized and customizable templates and objects. This enabled Stadtwerke Dusseldorf to keep most of the implementation in house and easily make changes and updates, saving time and operating costs.

A separate server runs the Wonderware Historian database and collects process data. Conversion of the data to Microsoft® Excel® is handled on a workstation loaded with Wonderware Historian Client software. Now operators have the reports they need for hourly and daily evaluation of production data, including water quantities, electrical power and water quality. And reports on cost allocation are quickly generated and sent to city management. Plus they’re documenting their adherence to water rules and regulations, especially those pertaining to drinking water compliance.

"Now we are able to create all required reports analyses and documentation ourselves. We are no longer dependent on outside companies to provide us with that information."
– Matthias Rammler, Electrotechnical and System Support, City of Dusseldorf Public Works

Stadtwerke Dusseldorf has now fully automated their operations, reduced operating costs and enhanced safety. Plant availability is up and maintenance is improved. The system is simple to administer and reporting is flexible, so the right data is readily available for better analysis and decision making. And, since the system is built on an open platform known for flexibility and scalability, the city can look forward to meeting the needs of its customers into the future.

For more information, read the complete success story here and/or access any of our Wonderware Water & Wastewater Industry success stories.

Europe's Covenant of Mayors - Increasing Energy Efficiency and Renewable Energy Use

The Covenant of Mayors (CoM – www.covenantofmayors.eu) is the mainstream European movement involving local and regional authorities voluntarily committing to increasing energy efficiency and use of renewable energy sources in their territories. By their commitment, Covenant signatories aim to meet and exceed the European Union’s (EU’s) 20% CO₂ reduction objective by 2020. They prepare a Baseline Emission Inventory (BEI) and submit, within the year following their signature, a Sustainable Energy Action Plan (SEAP) outlining the key actions they plan to undertake.

Signatory cities vary in size from small villages to large metropolitan areas like London and Paris. Over 3,000 SEAPs have been submitted to the European Commission, and that number is expected to increase as some 5,000 local authorities have now joined the Covenant of Mayors, representing over 170 million people or roughly one-third of the EU population (Covenant in Figures).

In a press release last month, the CoM referenced a recent study by the Joint Research Centre of the European Commission noting CoM signatory cities release approximately eight tonnes of CO₂ equivalent per capita. However, through the implementation of their SEAPs, cities commit to reducing their greenhouse gas emissions by about 28% by 2020, thus voluntary exceeding the EU’s 20% reduction objective. On average, 44% of the overall CO₂ reduction is expected to result from actions addressing the buildings sector (retrofitting of building stock, energy audits, etc.), 20% from the transport sector (introduction of cleaner vehicles, congestion charges, etc.) and 16%  from local energy production actions (production of biogas or solar energy, for instance).