Optimizing method for the running mode of a power distribution network

Abstract

The invention provides an optimizing method for the running mode of a power distribution network. The method comprises the following steps: S1) acquiring the related parameters for the optimizing of the running mode of a power distribution network; S2) according to the related parameters for the optimizing of the running mode of the power distribution network, constructing a mathematic model for optimizing the running mode of the power distribution network; and S3) seeking the mathematic model for optimizing the running mode of the power distribution network to obtain the optimization result of the running mode of the power distribution network. According to the invention, besides the optimization targets in the prior art such as economy and reliability, another two targets are added: the running risk and grid risk wherein the former reflects the running conditions of the lines and the transformers while the latter reflects the results incurred from a predicted accident. Compared with the traditional optimizing method, the optimizing method of the invention is more comprehensive and the optimization on the running mode is more scientific and reasonable.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a method for optimizing the operation mode of a distribution network. Background technique [0002] The normal operation mode of the power system refers to the normal planned maintenance mode and hydropower generation and thermal power generation according to the load curve and seasonal changes, maximum and minimum load and maximum and minimum start-up modes, and pumped storage operating conditions that may appear for a long time Operation mode. For the distribution network, the normal operation mode usually meets the following requirements: it can fully meet the user's demand for electric energy; all equipment in the distribution network does not have overload and overvoltage problems, and the transmission power of all lines is within the limit; There is a reactive power reserve capacity that meets the regulations; the relay protection and safety automatic devices are pro...

AI Technical Summary

Problems solved by technology

[0005] 1) Although the safety of the distribution network operation is considered, the operation risk is not considered, which may easily lead to some accidents;

[0006] 2) Safety and reliability usually only consider the comprehensive level of the probability of accidents and the consequences of accidents. For some special cases, such as accidents with high probability of occurrence but small impact or small probability of occurrence but serious consequences cannot be carried out well. Distinguish, easily lead to misjudgment of dispatchers, resulting in more serious accidents;

[0007] 3) At present, network reconfiguration is usually used to optimize the operation mode. Although the optimization of reliability and economy can be achieved to a certain extent, it will easily lead to the decrease of load transfer capacity and increase the risk of grid structure.

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