With　the　development　and　construction　of　power　grid,　the　capability　of　disaster　resistance　of　the　overall　power　grid　has　be　greatly　improved.　However　in　the　leaping　development　stage,　influenced　by　the　power　source　and　power　grid　construction,　power　exchange　between　big　areas,　seasonal　output　changes　of　clean　energy　and　other　factors,　the　operation　characteristics　and　stability　mode　of　power　grid　are　changing　greatly.　So　it　is　time　to　completely　and　accurately　analyze　the　weak　links　of　the　power　grid.　In　this　paper,　the　information　from　the　production　and　dispatch　of　power　system,　as　well　as　the　computer　technology,　network　technology　and　power　system　analysis　technology　are　adequately　utilized　to　long-term　track　the　changes　of　the　power　grid　running　condition,　analyze　deeply　the　evaluation　results　of　the　power　grid　real-time　operation　state,　comprehensively　review　the　factors　influencing　the　operating　characteristics　of　power　grid.　This　method　can　realize　the　classification　of　the　weak　link　based　on　the　power　grid　real-time　operation　state　and　ensure　the　critical　weak　links　to　be　resolved　as　soon　as　possible　and　the　security,　stability,　reliability　and　economic　of　the　power　grid　operation.　The　realization　of　this　technology　can　provide　the　dispatcher　with　the　quantitative　value　of　the　current　power　system　condition,　as　well　as　supply　the　managers　with　the　synthesized　information　for　planning　and　decision　making.　This　paper　pictures　the　application　prospect　of　the　technology,　and　the　target　is　to　ensure　the　power　system　to　run　safely,　offer　countermeasure　for　accident　in　advance,　and　supply　information　for　sagaciously　making　decision.　©　2014　IEEE.