Voltage wattless control partition method based on generator electrical distance

Abstract

The invention provides a voltage wattless control partition method based on a generator electrical distance. The voltage wattless control partition method comprises steps that: a shortest path from generators to electrical buses is calculated based on a Dijkstra algorithm, an electrical distance from the generators to the electrical buses is calculated based on a branch reactance value on the shortest path, partitions to which the electrical buses and the generators belong are determined based on the electrical distance, a number of the partitions is consistent with a number of the generators, automatic partition merging is carried out to realize an optimal number, partition belonging of the electrical buses at partition boundaries is adjusted according to sensitivity of a generator wattless power to voltage amplitudes of the electrical buses at the partition boundaries. The voltage wattless control partition method divides an area grade electrical network into a plurality of weak tie sub-net according to a wattless decoupling principle, so wattless influence on an adjacent electrical network is reduced to a maximum degree when individual voltage wattless control of each subnet is carried out.

Description

technical field [0001] The invention relates to the field of reactive power and voltage control of power grids, in particular to a partitioning method for voltage and reactive power control based on the electrical distance of generators. Background technique [0002] With the rapid development of high-voltage, large-capacity and cross-regional power grids, higher standards and stricter requirements have been put forward for voltage stability and quality. The construction of automatic voltage and reactive power control systems has been carried out in various levels of power grids at home and abroad. At present, automatic voltage and reactive power control in layers and partitions has become a consensus on voltage and reactive power control. According to domestic and foreign construction experience, three-level voltage and reactive power control is a feasible solution. In the three-level voltage and reactive power control scheme, the three-level voltage and reactive power cont...

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Problems solved by technology

[0004] However, in engineering practice, it is necessary to obtain relatively stable control partitions, and at the same time, it is necessary to dynamically adjust the partitions with the switching on and off of lines, switches and other equipment. Some existing partition methods cannot meet such requirements.

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