Influence of network events on partial discharge activity and cable health

Medium Voltage distribution power networks are dynamic systems in a constant state of flux. Load varies according to customer demand and regular patterns (daily and weekly) are often observed. These gradual variations are occasionally punctuated by step changes caused by network reconfigurations or underground cable faults. Together with environmental influences (weather, soil condition etc.), these factors contribute to mechanically stress the cable network and impact directly on the health and condition of the cable insulation.