Self-healing distribution grid
The RTU530 main controller with an integrated predefined algorithm, the modularity of RTU500 components, and the DIN rail communication portfolio of EDS500 allow simple integration of typical applications into the medium and low voltage grid as follows (image).
Automatic transfer system (ATS)
ATS provides a continuous power supply made possible by a detection function and an automatic switch-over function from the main source to an alternative energy source. The automatic switchover is triggered by the failure of the active main source.
Transformer monitor and control
This consists of simple monitoring of the current flow and fault detection. The application detects long-term or periodical overload stresses and supports in the calculation of the asset’s maintenance plan. Oil temperature and level monitoring allows detailed analyses of the transformer and protects the environment in case of a transformer-leakage. Measuring voltage and current in the feeders allows an automatic tap changer control to maintain voltage within a defined range in the distribution network.
Generator patrol and control
The application fulfills the requirements of a distribution code connecting small scale or mobile power stations to a distribution system. A communication link, automatic speed, power factor, and voltage control are all part of this RTU based application.
Generators are rotating machines that are subject to vibration and heat while running. Monitoring of temperature and unbalance caused by a rotor imbalance and unbalance or overload from the grid helps in evaluating the generator’s lifetime.
Fault detection isolation and restoration
Automatic logic functionality with measurement and fault detectors and motorized switches allows identifying a faulty cable within a short period of time, to isolate the fault, and to restore the supply. This application starts with ATS as a simple reconfiguration functionality and goes up to a high-level solution with peer to peer communication.