Luana combined heat and power plants (CHP) are widespread throughout Germany and operate in industry, in the housing sector or in municipalities. A central service portal monitors the plants and thus ensures the highest possible plant availability. The prerequisite for this is a stable and robust data connection.
People are rarely seen here. CHP units generate heat and electricity in remote basements. And highly efficiently. In order to obtain information about the condition of the equipment at any time, the system operators do not have to enter the energy center. A remote monitoring system, the LEA-Box from the technical service provider Luana Technics & Engineering records all important plant parameters with a large number of sensors. It continuously reads the current values of water meters, gas, electricity and heat meters, pumps, boilers and motors and transmits the data to the LEA portal developed in-house – the service center.
“Plant monitoring functions largely automatically. If, for example, the flow temperature falls below a preset minimum value, the system triggers a fault message,” reports Malte Brakhage, project engineer at Luana. The alerted 24-hour trouble-shooting team can then access the plant values via the LEA portal. Based on the fault message and the information in the LEA portal, the cause of the fault can usually be determined remotely. “In the event of a system malfunction, a technician must rectify the fault as quickly as possible. Via remote monitoring, every second on-site call-out can be avoided. The data show, for example, that there is no malfunction in the plant itself, but that only a single apartment may be affected. Often, for example, it is enough for tenants to vent their heating. With the help of remote monitoring, this saves the need for a fitter. This reduces costs, especially in the case of error messages on weekends,” adds the project engineer.
Concept for on-site installation
Together with MC Technologies, a solution was found for ensuring an automatic mobile radio connection for the decentralized CHP sites without the need for a specialized technician to be on site during the installation itself. The handy box is first pre-installed at Luana with all components, pre-wired and ready for operation. The configuration of the cellular router is read in from a USB stick at the first startup; manual configuration is not required. The local heating engineer then receives a package with the box, which he only has to mount on the wall and connect the cables for the acquisition of measurement data to the standardized terminals.
Conclusion: Economical plant operation
The integration of further CHP units is now routine for Luana. The reliable data connection is ensured by the robust cellular router. The common manufacturer-specific interfaces are covered by the LEA-Box and the effort for the system connection has been reduced significantly. With the LEA portal, it was possible to further optimize the security of supply and, by automating many functions, to further increase the economic efficiency of the plant.
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