Method for judging coordination running state between provincial and local regions in coordination voltage control between provincial and local regions

Abstract

The invention relates a method for judging coordination running state between provincial and local regions in coordination voltage control between provincial and local regions, belonging to the technology field of voltage automatic control in a power system. The method comprises the following steps: collecting high-voltage side reactive power of a transformer of a transformer substation at the boundary position between a province-level power grid and each region-level power grid as well as and high-voltage side bus voltage at the current time; calculating a voltage coordination upper limit and a voltage coordination lower limit expected by the local region power grid and uploading the upper limit and the lower limit to a province-level power grid controlling center; calculating a coordination upper limit and a coordination lower limit of the transformer high-voltage side reactive power at the boundary position between the province-level power grid and the region-level power grid, judging the running state of the transformer substation at the boundary position m between the current province-level power grid and the region-level power grid according to the above data. The method canmaster the current coordination running state between provincial and local regions in a visualized manner, is taken as a basis for controlling coordination voltage between the provincial and local regions, thereby eliminating the uncoordinated phenomenon between provincial and local regions and realizing reasonable distribution of the reactive power in a global scope.

Description

technical field [0001] The invention belongs to the technical field of automatic voltage control of electric power systems, and in particular relates to a method for judging an operating state of land-saving coordination in land-saving coordinated voltage control based on two-way coordination constraints. Background technique [0002] Automatic Voltage Control (hereinafter referred to as AVC, Automatic Voltage Control) system is an important means to achieve power grid security (increase voltage stability margin), economy (reduce network loss), and high-quality (increase voltage pass rate) operation. Control the reactive power output of generators, transformer taps and reactive power compensation equipment to achieve a reasonable distribution of reactive power and voltage in the grid. [0003] The master station part of the AVC system is implemented based on software in the power system control center, which requires that it must be consistent with the dispatch management sy...

AI Technical Summary

Problems solved by technology

Judging from the published literature, there is no systematic method to judge the current state of provincial-local coordination operation

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