Dispersed power supply probability planning method and device for bearing capacity and network loss reconstruction

Abstract

The invention discloses a bearing capacity and network loss reconstruction-oriented distributed power supply probability planning method and device, and the method comprises the steps: solving a bilevel planning model, and determining a distributed power supply access scheme and a network reconstruction scheme; a distributed power supply planning model with the maximum distributed power supply access capacity and the minimum network loss as targets is operated in a planning layer of the bilayer planning model, a network reconstruction optimization model with the minimum network loss as the target is operated in an operation layer, and the method comprises the steps that the distributed power supply planning model is solved to obtain a distributed power supply access scheme; solving the network reconstruction optimization model to obtain a network reconstruction scheme; and taking the access position and the capacity of the distributed power supply obtained by the planning layer as the input of the operation layer, taking the network reconstruction scheme and the network loss obtained by the operation layer as the input of the planning layer, and carrying out double-layer optimization iteration until an optimal distributed power supply access scheme and an optimal network reconstruction scheme are obtained. According to the invention, the utilization rate of the distributed power supply is improved, and network loss is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of distributed power supply planning, in particular to a distributed power supply probability planning method and device oriented to carrying capacity and network loss reconstruction. Background technique [0002] In recent years, distributed power generation based on renewable energy has developed rapidly in the distribution network. However, due to the characteristics of unschedulable and intermittent power generation of high-penetration distributed power generation, it will bring problems such as the voltage limit at the end of the network, threatening the safe and stable operation of the distribution network. In addition, the unreasonable selection of the access scheme of the distributed power supply will further aggravate the adverse effects such as voltage exceeding the limit. In order to improve the capacity of distributed power generation, it is first necessary to plan an access scheme that consider...

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Problems solved by technology

However, the network topology is only adjusted with the goal of maximizing the access capacity of distributed power sources. As a large number of distributed power sources are incorporated into the distribution network, the distribution network presents the characteristics of bidirectional power flow and complicated control, and network loss may increase. , unreasonable topological structure may further increase network loss

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