Influence of different framework conditions on the effectiveness of control concepts in distribution grids

摘要

Conventional methods of on-load tap changer transformer (OLTCs) based voltage control in low Voltage (LV) distribution grids turn out to be more and more difficult. This is due to constant growth of distributed infeed (e.g. from photovoltaic systems) and the emergence of new electric load types (e.g. electric cars, heat pumps). New concepts to face these challenges are based on distributed voltage measurements within the grid (provided e.g. by special smart meters over power line communication (PLC)). As such control concepts are dependent on the availability of measurements, the impact of controller- and measurement-system parameterization as well as external factors such as delay time and package loss need to be investigated. This study demonstrates the impact of such framework conditions on measurement based control strategies and outlines a methodology to test such conditions.