Power transmission equipment limit passing power and utilization rate evaluation method based on robust optimization

Abstract

The invention discloses a power transmission equipment limit passing power and utilization rate evaluation method based on robust optimization. The method comprises: obtaining system basic technical data, system operation constraint condition data and system operation prediction data are acquired; based on the idea of robust optimization, considering all possible operation scenes of the system, maximizing the power possibly flowing through the power transmission equipment in a single time period, and constructing a power transmission equipment limit passing power calculation model based on theidea of robust optimization; solving the established computing model, wherein the obtained power of the power transmission equipment is a maximum value; constructing a reasonable utilization rate index calculation formula; evaluating the operation condition of the power transmission equipment, wherein the specific form is that the power value of the power transmission equipment solved by the model is used as the limit power transmission capacity of the power transmission equipment under the existing system scale, and the proportion of the operation power of the power transmission equipment inthe limit power transmission capacity during normal actual operation is calculated, so that the resource utilization condition of the power transmission equipment is analyzed according to the proportion. The method can reflect the operation condition of the power transmission equipment more truly.

Description

technical field [0001] The invention belongs to the technical field of grid planning and operation evaluation in electric power systems, and in particular relates to a robust optimization-based evaluation method for the limit passing power and utilization rate of power transmission equipment. Background technique [0002] The power system is responsible for the production and consumption of electric power, which affects all areas of the country and society. Its development and construction are closely related to economic prosperity and social stability. As an important part of the power system, the transmission network connects power plants, substations and other power generation and transformation equipment stations, and undertakes the task of transmitting large-scale electric energy. It is the main artery of the power system. The utilization rate of the transmission network is an important indicator to evaluate the operation effect of the transmission network and the quali...

AI Technical Summary

Problems solved by technology

Due to the influence of many constraints in the operation of the power system, the passing power of the transmission equipment is far below the upper limit in most cases, and the utilization rate of the existing transmission equipment usually takes the thermal stability limit power as the transmission power of the equipment. The upper limit, which leads to the calculated indicators are often at a low level, it is not easy to identify the weak links of the grid

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