110kv transformer-substation multi-dimension variable-parameter calculation reactive power compensation configuration method

Abstract

The invention provides a 110kV transformer-substation multi-dimension variable-parameter calculation reactive power compensation configuration method. The method comprises the following steps of firstly, selecting characteristic parameters which influence each factor of a power distribution network reactive power configuration requirement; secondly, constructing a 110kV sheet network calculation model and calculating reactive power compensation optimization configuration rates of a 110kV transformer substation under different characteristic states through changing the characteristic parameters; then, through carrying out sensitivity analysis on each characteristic parameter, calculating sensitiveness of the reactive power compensation optimization configuration rates to each characteristic parameter, after comparison, dividing the characteristic parameters into primary parameters and secondary parameters so as to form a method for the 110kV transformer substation to carry out reactive power compensation optimization configuration, wherein the characteristic parameters are taken as reference quantities. Aiming at the 110kV transformer substation with different characteristic states, different reactive power compensation configuration intervals are provided. A traditional sweeping approach or single section optimization reactive power configuration mode is changed and the reactive power compensation configuration of the 110kV transformer substation can be specifically and effectively guided.

Description

technical field [0001] The invention relates to the technical field of reactive power compensation capacity configuration of a 110kV distribution network, in particular to a reactive power compensation configuration method of a 110kV substation. Background technique [0002] Due to the rapid expansion of the distribution network brought about by the rapid economic development, there have been some changes affecting the reactive power configuration of the current distribution network, such as cableization, shortened power supply radius, large peak-to-valley difference, large difference in urban and rural load characteristics, distributed With the increase of power access, etc., it seems increasingly unsuitable to configure reactive power compensation according to the traditional configuration principles. [0003] At present, there are two main ways to reasonably plan the reactive power of 110kV substation: one is to rely on planning and design personnel to carry out reactive ...

AI Technical Summary

Problems solved by technology

The problems of the former are: on the one hand, it is limited by the professional level of planning and design personnel; on the other hand, the reactive power allocation principles of the existing guidelines are relatively extensive, and the given allocation range is relatively wide, which is insufficient for the actual reactive power planning of substations. Specific guidance; the problem of the latter is: on the one hand, it is necessary to carry out modeling and simulation for each reactive power planning of each regional distribution network that needs reactive power planning, which is a heavy workload and difficult to popularize and apply; on the other hand The selection is to select a typical section from the perspective of the region as a whole, and the corresponding reactive power planning scheme is the optimal one for the region, but not the optimal one for each substation.

On the one hand, this principle gives a wide configuration range for capacitive reactive power compensation, without distinguishing and specifying how to set the value in this range in the actual 110kV substation; Relevant regulations have been made on power compensation, but there is a lack of guidance on perceptual reactive power compensation

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