INP International Projects is a group of companies with a global presence, working in the fields of process controls engineering, power and automation technology, and thermal process engineering. The core services are consulting, engineering, U.S. services, as well as commissioning for international projects. INP is one of the European market leader in the area of innovative combustion power controls. INP employs 250 people, with a total of five locations in Germany, Switzerland, Austria, the USA, and South Africa. The group is offering not only its knowledge in automation and control but also in expert systems for complex processes using fuzzy control as an intelligent tool for high-level operation of your plants in operation or in design phase. We can build on our years of experience in optimization of process and thermal engineering in power plant systems, industrial chemical plants, and systems for thermal waste treatment and waste converting. With the use of fuzzy control, we reduce system-driven operating costs while simultaneously increasing productivity by a significant degree. Amortization times are only a few months. We achieve this through the implementation and combination of various innovative technologies.
INP Deutschland GmbH
References
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Fuzzy controls for high-preasure steam systems
Hazardous waste incineration plant Simmeringer Haide (Vienna district heat) Superordinate HP steam controller The Vienna District Heat Simmeringer Haide plant has a total of six steam generators: four fluidizedbed reactors and two rotary kilns. The steam generated by these six furnaces is processed in two redundant steam distribution systems. District heat is generated in two converter stations, and two back pressure steam turbines generate electrical power. With the construction of the fourth fluidized-bed reactor, steam can now be fed into the energy system beyond the allowable design limits. Task and goals In order to avoid overloading the energy system, but still be able to use both turbines up to their full flow capacity, a superordinate steam network controller was to be installed. To operate the HP steam network of the older systems in the Simmeringer Haide plant and the Fluidized-Bed Reactor 4 for cogeneration, superordinate fuzzy controls were to ensure even, stable steam network operation. The demand for maximum flow of available steam, while simultaneously keeping variations in the HP pressure low, is of particular importance for operating the power systems in a manner that is gentle on the boiler and the system. This resulted in the following detailed goals for the implementation of fuzzy controls: - Control of existing process parameters, using any process values within operationally sensible limits. Actuating variables can have a direct physical meaning (e.g., a valve position), or can represent a target value for a subordinate control circuit (e.g., cascade control circuits). - Maximum flow of the available steam through the steam turbines, considering system and turbine limits. - Maintaining the safety functions - Fallback option to the existing controls systems (smooth transition from conventional to fuzzy controls, in both directions) - Consideration of various system operational modes in normal operation. In particular, these are one- and two-turbine operations, and different numbers of steam generators in each case.
Further information
Type of Business
- Engineering,
- Consulting,
- Installation
Technology
- Energy efficiency in industry and trade: electricity sector:
- Electrical and electronic engineering,
- Instrumentation and control engineering
- Energy efficiency in industry and trade: heating and cooling sectors:
- Air handling units
- Power grids:
- Inverter technology,
- Network control technology
- Sector Coupling Technologies:
- Power-to-gas technology
- Storage technologies in the electricity sector:
- Large battery systems,
- Small battery systems
Classification
- Electricity generation and heating/cooling:
- Renewable power generation,
- Combined heat, power and cooling