Method and system for calculating production cost of electric power system

Abstract

The invention relates to a method and system for measuring and calculating the production cost of a power system, which is characterized in that it includes the following steps: 1) setting the iteration cycle; Constrained thermal power unit combination model or safety-constrained economic dispatch model for production simulation simulation calculation; 3) Judging whether the production simulation calculation of the safety-constrained thermal power unit combination model or safety-constrained economic dispatch model in all periods of the iteration cycle is completed, and if completed, output the iteration The production simulation calculation results of the power system to be measured in all periods of the cycle; if not completed, go to step 4); 4) use part of the production simulation simulation results of this iteration as the parameters of the power system to be measured, and enter step 2), The present invention can be widely used in the field of power system production simulation until the production simulation calculation results of the power system to be measured in all time periods in the iterative cycle are obtained.

Description

technical field [0001] The invention relates to a power system production cost measurement method and system, and belongs to the field of power system production simulation. Background technique [0002] With the increasing proportion of intermittent renewable energy connected to the grid, the power system has higher and higher requirements for operational flexibility. The traditional power system planning method with power balance as the core has been difficult to meet large-scale renewable energy integration. The demand for operational flexibility such as thermal power unit rampability, energy storage capacity, and demand-side response requires long-term, fine-time-scale production simulations for power system planning schemes to reveal the power system operation within the planning period. details, showing the balance of supply and demand for operational flexibility. [0003] The core of power system production simulation is to solve the problem of power system safety co...

AI Technical Summary

Problems solved by technology

However, the stochastic production simulation method ignores the time-sequence-related constraints and cannot consider the start and stop of thermal power units. Although the calculation cost is reduced, the calculation accuracy is very low; the sequential thermal power unit combination method simulates the operation of the power system based on the thermal power unit combination model, but for For medium and long-term production simulation, the calculation cost is very large

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