Distributed measurements on power systems to assess the responsibility for PQ degradation

The paper reports and discusses the results of simultaneous measurements carried out on power network nodes with the purpose of assessing the responsibility for Power Quality (PQ) degradation. The measurements have been performed by means of distributed measurement system set up in the laboratories of the Department of Electrical Engineering of the University of Bologna. The instrument implements two different approaches recently proposed for the above task. The instrument main features are also described.