As　the　penetration　rate　of　new　energy　generation　in　distributed　distribution　networks　continues　to　increase,　the　integration　of　numerous　new　energy　power　plants　and　associated　power　electronic　devices　presents　challenges　to　the　power　quality　of　traditional　power　systems.　Therefore,　conducting　power　quality-related　research　in　distribution　networks　is　of　significant　importance　for　maintaining　power　system　stability,　safeguarding　electrical　equipment,　and　enhancing　electrical　safety.　A　framework　for　evaluating　the　overall　power　quality　of　new　energy-penetrated　distribution　network　systems　based　on　the　analytic　hierarchy　process　(AHP)　is　proposed.　This　framework　aggregates　and　calculates　the　global　power　quality　index　(GPQI)　through　averaging,　thereby　completing　the　assessment　of　power　quality　situations.　By　enhancing　the　computation　speed　of　evaluation　metrics　through　an　improved　S-transform　and　considering　various　disturbances　such　as　diminished　illumination,　wind　power　disconnection,　and　high-current　grounding,　the　GPQI　values　are　used　to　assess　power　quality　under　diverse　scenarios.　Simulation　and　experimental　results　confirm　the　framework’s　close　alignment　with　real　scenarios　and　its　effectiveness　in　evaluating　power　quality　within　distribution　networks.　This　method　is　crucial　for　maintaining　power　system　stability,　protecting　electrical　equipment,　and　enhancing　overall　electrical　safety　within　distribution　networks.　©　2024　by　the　authors.