Model-based control
Less pipe breakage, greater energy-efficiency and real-time insight into asset management
Pressure fluctuations can lead to water pipe breakage and other problems. To reduce these fluctuations, Best Works has developed a model-based distribution for pumps and pump systems together with Brabant Water. The control arrangement not only reduces the size of the pressure fluctuations to an acceptable level, but also has other benefits, such as reduced energy consumption. Witteveen+Bos has now taken over the development and marketing of the distribution system.
Understanding this application requires knowledge of the differences between standard control engineering and model-based control engineering. Standard control engineering lags behind the events in real time and basically guesses what actions are needed in an attempt to minimise anomalies.
Predictive model
In contrast to the responsive approach, model-based control engineering uses a predictive model to accurately calculate the precise control signals needed to maintain the required values. The model is able to do this on the basis of knowledge of and insight into the pump system (process parameters, interaction between pumps, etc.).
Of course, implementing a model-based control system is custom work. It is possible to use such a distribution system for any distribution pumping station, e.g. at a wastewater treatment plant, but it will still have to be specifically adapted within the compass of a project. This advisory product is now on the market.
Benefits of model-based control include:
- No fluctuations in pressure if there are sudden changes in pump switching operations
- The highest level of yield for a given pump configuration (the expected saving in Brabant Water’s distribution is 5%)
- Preventing excessive wear and tear to pumps
- Universal model enabling more pump combinations/configurations
- Real-time insight into the system’s condition/status, including for predictive maintenance purposes
- Paving the way for further optimisation (continuous improvement)
Ideal combination of expertise
‘It ties in perfectly with our firm's knowledge and passion’, says Edwin Twigt (Witteveen+Bos). ‘We provide consultancy and design services in such fields as process automation, business operations and process and energy optimisation. What’s more, our firm specialises in design and consultancy for the water sector, including drinking water companies, sewage and wastewater treatment and industrial wastewater. Which makes our firm the ideal party to put this advisory product to optimal use for existing clients and prospects.’
More information?
Would you like to learn more about applying model-based control engineering in your field or find out how it can improve your pumping station's performance?
