Monitoring operation systems for secure grid operation
The expansion of the grid is also presenting the equipment monitoring with new challenges. In the iMonet project, researchers want to develop a measuring method that can read both discrete and distributed sensors in high-voltage systems. One of the aims here is to enable greater grid security even under critical conditions. To this end, the project partners want to use an integrated fibre optic network. This means that the sensors are connected via fibre optic cables to one other, which considerably reduces the cabling requirements for the measurement technology. The evaluation devices are also located in this network and can query and evaluate the individual sensors.
Distributed and concentrated sensors are being used as part of iMonet. Concentrated – or discrete – sensors have the advantage that they enable very precise measurements. The disadvantage, however, is that each sensor has a cable leading to it, which increases the outlay. Distributed sensor systems measure, for example, the temperature along cables and provide a resolution in the metre range. Although this enables the cable outlay to be kept low, the measurements are not always sufficiently accurate in some cases. The project scientists are therefore focussing on combining both systems so as to produce the highest possible accuracy with the lowest possible cabling outlay.
It is also intended that the sensors and cables in the fibre optic network shall be integrated into the high-voltage technology equipment. What sounds trivial at first glance is in fact much more complex when considered in greater detail: if the sensors and cables were installed without detailed knowledge of the high-voltage components, this would jeopardise the operation of the systems. High-voltage technical aspects therefore play a significant role when integrating measurement technology into the overall system. When well designed, integrated components can, however, be advantageous. One possibility, for example, would be the integration of fibre optic cables in isolation pads.
The initial results are expected during 2015.
08/2014 – 07/2017
91058 Erlangen, Germany