The invention discloses an
electric power system investment decision evaluation method and
system, a medium and equipment, and the method comprises the steps: carrying out the
curve fitting of a
power grid development stage through taking the
per capita power consumption as an index, and analyzing the change trend of the
power grid development level along with time t; analyzing the influence of the novel power
system on the power
supply side investment structure, the
power grid side investment structure, the load side investment structure and the
energy storage side investment structure, and respectively constructing power
supply side investment demand systems, power grid side investment demand systems, load side investment demand systems and
energy storage side investment demand systems which adapt to the novel power system; the investment capacity is measured and calculated, and the investment scale and the power grid investment boundary and range are determined by combining the recent-year investment scale and based on the investment capacity coefficient and the price checking investment coefficient, overall planning the investment capacity, the investment demand, the planning investment, the price checking investment and the electric quantity benefit constraint; a multi-scene power grid
investment evaluation index system is formed according to different scenes, a novel power system multi-scene power grid investment effect evaluation model is established, and power grid investment effect dynamic deduction is carried out for typical scenes under the construction of the novel power system.