In the context of high proportion of renewable energy integration

the stability paradigm of power systems is undergoing profound transformation

posing severe challenges to traditional stability mechanisms based on synchronous generators. With their voltage source characteristics and active support capabilities

grid-forming （GFM） technologies

which can emulate key external characteristics of synchronous generators

have emerged as crucial enabling technologies for enhancing the stability of new power systems. This paper systematically analyzes the intrinsic mechanisms and typical applications of GFM technologies in improving multi-dimensional stability. It innovatively proposes a two-dimensional classification framework based on “function orientation - control core” to clarify the essential features and applicable boundaries of numerous technical routes. Addressing prominent issues in current quantitative evaluation of GFM technologies

such as ambiguous classification

disjointed scenarios

and insufficient decision-making basis

this paper constructs a multi-dimensional quantitative evaluation system （MSCSS） encompassing stability contribution

operational scenarios

and control strategies. This system achieves multi-dimensional scientific assessment of GFM technical solutions under complex operating conditions by decoupling dynamic scenarios

quantifying stability contributions

and evaluating strategy compatibility. Thereby

it provides systematic theoretical methods and decision support for technology selection

parameter optimization configuration

and comprehensive benefit evaluation in engineering practice. Finally

this paper prospects future development trends in this field

including intelligent parameter tuning

stability of GFM/GFL hybrid systems

system resilience enhancement

as well as standardization and marketization.