Transmission-distribution-integrated optimization scheduling method with consideration of multi-distribution-network access

Abstract

The invention discloses a transmission-distribution-integrated optimization scheduling method with consideration of multi-distribution-network access. The method comprises: a sub transmission network optimization model based on a supply curve is established, and a transmission network supply curve SCtran after correction with consideration of network losses is obtained by using the sub transmission network optimization model; a multi-distribution-network sub optimization model based on a demand curve is established and demand curves SCdis of all distribution networks are obtained by using the multi-distribution-network sub optimization model; and a transmission-distribution-integrated optimization scheduling algorithm model with consideration of multi-distribution-network access is established, mutual optimization iteration between the transmission and distribution networks is carried out by combining the supply curve obtained by the sub transmission network optimization model and the demand curves obtained by the multi-distribution-network sub optimization model so as to obtain a transmission-distribution-integrated optimized-scheduling global optimization result. According to the invention, optimized configuration of the whole system resources is carried out, so that the system cost is reduced, the resource availability rate is increased, and the system operation safety is improved.

Description

technical field [0001] The invention belongs to the technical field of optimal scheduling of transmission and distribution networks, and more specifically relates to an integrated optimal scheduling method of transmission and distribution considering access to multiple distribution networks. Background technique [0002] In recent years, with the development of grid intelligence, the functions of transmission and distribution grids will be further integrated. Adhering to the integrated management of power transmission and distribution can reduce operating costs to the greatest extent and improve operating efficiency. At the same time, it can also reduce redundant construction and waste of resources, reduce the cost of the entire society, and meet the reasonable needs of power consumption. In the traditional transmission and distribution network scheduling problem, the distribution network is usually equivalent to a fixed power node on the tie bus, and the optimization soluti...

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides an integrated optimization scheduling method for transmission and distribution considering the access of multiple distribution networks, the purpose of which is to decompose the integrated optimization problem into transmission network The sub-optimization problem and the multi-distribution network sub-optimization problem based on the demand curve, the "supply and demand curve" obtained through the sub-optimization model is used as the interaction quantity of the transmission and distribution network for cross-iteration to obtain the global optimization result of the integrated dispatching of transmission and distribution. This solves a series of system economic and security problems caused by insufficient utilization of power grid resources and no interaction between transmission and distribution networks during traditional transmission and distribution separation optimization scheduling

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