Power-on planning iterative optimization method based on control measure cost performance entropy index

Abstract

The invention discloses a power-on planning iterative optimization method based on a control measure (RM) cost performance entropy index (CPR), which comprises the following steps: firstly, determining the allocation quantity of prevention control and emergency control; and then, adopting a CPR optimization method for RM optimal selection aiming at the prevention control quantity and the emergencycontrol quantity, respectively; finally, using 2 layers of repeated iteration to complete continuous correction of the allocation quantity. Under the initial control quantity allocation, the sensitivity analysis is completed by gradually perturbing a certain control quantity (prevention or emergency spare capacity size); finally, an iterative step with the smallest total risk cost is selected asan optimal solution; the sensitivity of the prevention control quantity and the emergency control quantity in a to-be-optimized scene is searched, so that the allocation quantity of a non-rotational control measure involved in the prevention control and the emergency control can be adaptively determined, coordinated optimization of the rotational control measure and the non-rotational control measure is achieved, and the system operation economy is improved.

Description

technical field [0001] The invention relates to a start-up optimization iterative optimization method based on the cost performance ratio index of control measures, and belongs to the technical field of power system unit combination. Background technique [0002] A high proportion of intermittent renewable energy (Renewable Energy, RE) is connected to the grid, and its output uncertainty will cause a series of impacts and challenges on the safe and stable operation of the power system. Sexual issues are particularly prominent. Compared with Europe and the United States, which have a relatively high proportion of flexible regulation units such as pumped storage and gas, the proportion of flexible power sources in China is relatively low (the proportion of pumped storage and gas power is only 6%), which seriously affects the effective consumption of RE. In 2016, China's average wind and light curtailment rates were 17% and 20%, respectively. [0003] In the "Thirteenth Five-...

AI Technical Summary

Problems solved by technology

The traditional way of using non-rotating grade RM in the power grid is: when adequacy events such as wind / solar power output deviations occur, first dispatch the rotating grade reserve capacity (including removing secondary loads outside the contract) to implement frequency control, and at the same time dispatch non-rotating grade RM RM upgrade, to replace the frequency control measures that have been implemented after the upgrade, belongs to the emergency control after the event, and does not distinguish between preventive control and emergency control

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