Active power distribution network optimization scheduling method capable of promoting renewable distributed power source consumption

Abstract

The invention discloses an active power distribution network optimization scheduling method capable of promoting renewable distributed power source consumption. The method includes the following stepsthat: 1) load and renewable distributed power source output probability density parameters are estimated according to historical information; 2) a chance constraint-based distributed power source upper layer optimization model is established on the basis of known probability density models; 3) in an upper layer optimization solution iterative process, whether the result of each iteration satisfies a confidence interval is judged, if the result of each iteration satisfies the confidence interval, the next iteration is performed, otherwise, lower layer optimization is enabled; 4) the lower layer optimization further optimizes results which do not satisfy the confidence interval in the upper layer optimization, and the result of the lower layer optimization is utilized to correct the upper layer optimization, and the upper layer optimization and lower layer optimization are performed alternately, so that an optimal solution that finally satisfies the confidence interval can be obtained.A whole optimization scheduling process is divided into the upper layer optimization and the lower layer optimization, the upper layer optimization and the lower layer optimization are performed in acoordinated manner, and therefore, controllable resources in an active power distribution network can be fully utilized, and an optimal scheduling goal can be achieved.

Description

technical field [0001] The invention belongs to the field of smart grids, and in particular relates to an active distribution network optimization scheduling method for promoting the consumption of renewable distributed power sources. Background technique [0002] In order to optimize the energy structure and respond to the policy of energy conservation and emission reduction, my country's distributed power generation technology based on renewable energy and clean energy has developed rapidly. A certain amount of distributed power connected to the traditional distribution network can reduce the system network loss to a certain extent, improve voltage stability, and delay the upgrading of some equipment. However, when the distributed power is connected too much, it will cause the distribution network The voltage of some nodes exceeds the limit and reduces the reliability of operation, thus limiting the ability of the distribution network to accommodate distributed power. Dis...

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Problems solved by technology

Under the framework of the active distribution network, research on improving the acceptance capacity of the distribution network for distributed generation of renewable energy and meeting the requirements of low-carbon environmental protection, while reducing the active network loss during the power supply process of the distribution network, and ensuring a good voltage level , is the goal pursued by the industry, but there is no relevant description in the prior art

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