Langenzenn public utilityis using SAE telecontrol

Description

In 1911, the connection to the Middle Franconia power plant was begun, which enabled electrical street-lighting to be introduced. More and more households were connected up to the electrical system. The number of consumers increased rapidly. The first unit-type district heating power station was established in 1993. Based on its many years’ experience, the Langenzenn public utility provides a reliable supply of drinking water and electrical power to its inhabitants, running a 20kV medium voltage and low voltage network. The upstream DSO for the power supply is MDN Main-Donau Netzgesellschaft mbH from Nuremberg.

Approx. In 2008, it became clear that the current telemetry system with process control system was in need a major revamp in the coming years. The technical staff at the public utilities made an extensive survey of the market. At a SAE telecontrol user day in 2009, held in Fürth, good contacts were made with local suppliers were one got up to speed with the latest technical information. A number of visits were made to get an extended overview of the practical use of IT-systems from SAE. In 2014, it became real. Detailed plans for a new network control system with telecontrol were drawn up for electricity and water supply areas. In on-site discussions, technical sales at SAE IT-systems lent their support for structuring and design planning. The focus was on the planning of a new control centre and telemetric connection to substations and other central network stations. The head of the e-plant, master electrician Carle Eberlein was at the fore of the planning, putting a great emphasis on independent working independently across the board. The aim was to achieve autonomous connection planning and assembly of all components. Special attention was also paid to ensuring the parametric tools were easy to use. After the framework conditions were established, suitable offers were gathered. SAE IT-systems was able to convince in functionality and price. In the detailed planning discussion which took place in mid-2015, more concrete agreements were made concerning the new ProCoS network control system made by KISTERS, as well as the network control sys-tem and SAE-IT telecontrol. As part of the first project planning phase, Langenzenn public utilityis using SAE grid stations only the power supply area is being taken into account. Later, the drinking water supply will be added. A net-line FW-50 in a large rack is being used in the central zone. The very remote substations, including Teichenbach, Ziegelbruck, which can also be reached via their own Cu cables or using FSK transmission were also equipped with the modular net-line FW-50 units. The good news that the entire communication structure could be built using Langenzenn’s own cables enables connection to other stations coupled with the IEC 60870-5-101 protocol by FSK modem. These are usually equipped with appropriate extension boards with the smaller net-line FW-5 type compact units. The switches in the stations are triggered from suitable DSO units , 1.5 pole via double command. Various external links such as Janitza directional earth fault relay and network analysis systems are implemented via Modbus. After being assembled independently, the configuration was carried out in cooperation with SAE IT-systems design. After the basic installation of the control centre, it was possible to continue configuration work here via remote access.

Work with the project manager is structured and partner-like. Mr Eberlein emphasised the handling of the telecontrol systems during assembly and configuration using setIT so that a good foundation was established for much of the independent work for later system extensions in local network automation and drinking water supply. The existing protective equipment was first to be adapted to the central positions as per IEC 60870-5-103. The project is scheduled to be completed in 2016.