Solid electric heat storage technology converts the off - peak electricity into the heat energy

which is of great significance to the severe electric peak load regulation of the power grid

the utilization of the abandoned wind power and the environmental protection. On the basis of summarizing the research status of solid electric heat storage technology in China and other countries

the research progresses are analyzed in detail from the aspects of system-form

solid thermal storage materials

structure of thermal storage devices

the thermal storage/release performance

operation modes

control strategies and economic analysis. Then the applications oftypical solid electric heat storage devices are given. Finally

in combination with the development requirements of solid electric heat storage technology

the suggestions and prospects could provide references for the future researches and applications.