Power distribution network planning double-layer optimization model construction method based on operation limitation

Abstract

The invention discloses a power distribution network planning double-layer optimization model construction method based on operation limitation, which comprises the following steps of: constructing anupper investment construction optimization model and a lower scheduling operation optimization model by taking input construction time and site selection constant volume of lines and energy storage as decision variables; adding constraint conditions into an objective function by using a Lagrangian multiplier, converting an original optimization problem containing equality and inequality constraints into an unconstrained optimization problem, and finally solving the problem by using a Kuhn-Tucker condition; screening a limited operation scene based on the shadow price, wherein the shadow pricerepresents the reduced scheduling cost of assuming that the resource is expanded by one unit; and carrying out decoupling processing on the upper investment construction optimization model and the lower scheduling operation optimization model.

Description

technical field [0001] The invention relates to the technical field of distribution network optimization, in particular to a method for constructing a two-layer optimization model based on distribution network planning with limited operation. Background technique [0002] The goal of distribution network planning is to pursue the optimal economic and social benefits on the basis of meeting other requirements such as load development and long-term safe and stable operation. Nowadays, many distribution network planning models use the operation-planning double-layer model. Under the premise of satisfying the operation reliability constraints, the planning total cost is used as the objective function to obtain the planning scheme with the minimum total cost. Although the existing two-level programming model takes the operation problems of the distribution network under multiple scenarios into the planning model, there are still deficiencies in the construction and solution of th...

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Problems solved by technology

Although the existing two-level programming model takes the operation problems of the distribution network under multiple scenarios into the planning model, there are still deficiencies in the construction and solution of the model, such as not taking extreme scenarios into consideration, weak relevant feedback variables and The complexity of solving is high

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