Uhlelo lokuqapha ukukhishwa kwendawo (PD) ezintweni zokushintsha ugesi luyisistimu ehlakaniphile esetshenziselwa ukuthola, ukubeka indawo, nokuhlaziya ngesikhathi sangempela izenzakalo zokukhishwa kwendawo ezibangelwa izinkinga zokuvikela ngaphakathi ezintweni zokushintsha ugesi (njengama-switchgear aphezulu, i-GIS, iziphetho zamakhebula, njll.). Ukukhishwa kwendawo kuyisibonakaliso sokuqala sokwehla kokuvikela, futhi ukuqapha okuqhubekayo kungavimbela ngempumelelo izinkinga ezinkulu njengokuphuka kwezinto, imililo.