Power distribution network contact construction sequence optimization method based on maximum power supply capability

Abstract

The invention discloses a power distribution network contact construction sequence optimization method based on the maximum power supply capability. The power distribution network contact construction sequence optimization method based on the maximum power supply capability comprises the following steps of: according to each variable and an optimal feeder line contact construction sequence required in a contact optimization process, establishing an optimal feeder line contact construction sequence model; according to the expandable power supply capability, calculating optimal connecting line scale; calculating the sum of outside-of-station contact positions and the contact datum degree; and searching a maximum weighting contact balance degree to obtain an optimal feeder line contact sequence. According to the method, the connecting line scale is reduced, the contact efficiency is improved, the contact construction fund is saved, the contact distribution is more balanced, the use ratio of the connecting line capacity is higher, and instation transfer load is more, thereby more conforming to a dispatching principle. A TSC parameter in the method can achieve the maximum value in each stage and the whole process, the use ratio of the power grid asset is improved, the optimal feeder line contact construction sequence capable of performing the maximum power supply capability of the power distribution network in each planning stage can be given, and the defect that a main-transformer planning contact number exceeds a main-transformer maximum line outgoing number is overcome.

Description

technical field [0001] The invention relates to the field of distribution networks, in particular to a method for optimizing the sequence of distribution network connection construction based on maximum power supply capacity. Background technique [0002] The distribution network is the part closest to the user in the power network, and its scientific optimization can ensure the rationality of the power grid transformation, the safety and economy of the power grid operation, and improve the power supply quality of the distribution network. The distribution network can be divided into substation optimization and grid optimization from the optimization object, and can be divided into single-stage optimization and multi-stage optimization from the optimization model. The connection is an important structure of the distribution grid, and the connection construction sequence is essentially a phased construction of the connection. [0003] The power supply capacity of distributio...

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Problems solved by technology

[0005] The above studies have guided the optimization of distribution network linkages from the perspective of TSC, but have not studied the sequence of linkage construction, and cannot keep the TSC parameters at the maximum value of each phase of construction, resulting in a large load capacity in stages. Weak; and after the grid construction is completed, the overall TSC parameters cannot reach the maximum value, thereby reducing the asset utilization of the grid

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