China is currently accelerating the transformation from energy consumption dual control to carbon emission dual control. The deep low-carbon development of power system is a key link in China's energy transition

and power system is evolving from the traditional binary balance between safety and economy to a ternary balance among safety

economy

and low carbon. How to fully integrate the carbon reduction constraints and targets into the entire process of power system planning

operation

and construction is crucial for the high-quality transformation of the power system. This paper first proposes the definition and connotation of electric-carbon collaboration

summarizes and sorts out the two major issues and five key challenges faced by electric-carbon collaboration. Aiming to build a zero-carbon power system

the theory and technical system for electric-carbon collaboration covering 5 major fields and 70 key technologies has been constructed from five aspects: indirect carbon reduction benefit evaluation and methodology

integrated carbon assessment technology of power system

electric-carbon collaboration technology throughout the entire process of the power system

application of low-carbon

zero carbon

and negative carbon technologies to the power system

carbon assets development and carbon market technology of the power system. Finally

the current research status and practice in the field of electric-carbon collaboration are summarized

and the future development trends of key technology are discussed.