Investigating the impact of power quality in the distribution network
An important aspect regarding voltage quality issues in distribution networks is observability. Distributed metering systems are essential to grid transparency regarding voltage quality in today's grids and to accompanying new developments over the coming years. Advancements in this field must include the optimal design of individual measuring units, efficient placement, and data evaluation. These factors can be investigated using the modular topology of our medium and low voltage test networks. A 100 kW class A amplifier from Spitzenberger can simulate virtually any network and quality conditions by means of variable voltage and frequency settings, as well as a configurable output impedance. The recording or validation of the network conditions can be carried out with the help of measuring units from Janitza, which are installed throughout the area, while the highly detailed recording of the voltage quality is carried out by special devices from Dewetron/Dewesoft. An established communication infrastructure enables the simulation of realistic communication paths for data transport. The central server infrastructure is subsequently used to perform the desired data processing and analysis algorithms. Integration into existing control room software can also be tested.
In addition to the design of the power quality measurement systems, the influence of different components can also be investigated at various operating points. Commercial, freely programmable inverters are available for this purpose. Passive and active electrical loads, such as load banks or electric vehicle charging stations, can also be investigated.