Monitoring studies under alternating current AC OHVPLs have

While air ions do not include charged particles, space charge includes both air ions and charged particles. Ion mobility spectra have been reported but these have not 'LP533401 presented the actual charged particle concentrations under the lines (Buckley et al., 2008 and Wright et al., 2014). Total net space charge concentrations have also been estimated using direct current (DC) electric field measurements (Fews et al., 1999, Fews et al., 2002, Matthews et al., 2010 and Matthews et al., 2012).