STATCOM configuration planning method, device and equipment

Abstract

The invention discloses a STATCOM configuration planning method, and the method comprises the steps: obtaining a short-term voltage instability fault set of a power grid through scanning a weak regionof the power grid, and building a STATCOM fixed-point and constant-volume mixed integer programming model of the power grid. According to the method, a corresponding decision substitution variable isintroduced for each preset installation node of the mixed integer programming model, the mixed integer programming model is convex, then the decision substitution variable is relaxed to a continuousvalue interval, and finally a continuous optimization model is obtained,the continuous optimization model is solved, and a configuration planning result of the STATCOM is output when all decision substitution variables meet a binary condition. The invention further discloses a corresponding planning device and equipment. By adopting the technical means of the embodiment of the invention, the planning of the installation node and the installation capacity of the STATCOM can be considered in a unified manner, the overall optimal configuration planning result of the installation node and the installation capacity of the STATCOM is obtained, the economic cost for configuring the STATCOM is effectively saved, and the configuration planning efficiency is improved.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a STATCOM configuration planning method, device and equipment. Background technique [0002] With the rapid development of power technology and the improvement of users' living standards, many new electrical appliances appear in thousands of households, which put forward higher requirements for power supply safety and power supply quality. During the operation of the power system, if a serious three-phase short-circuit fault occurs, it is necessary to quickly remove the fault and restore the power supply at the normal voltage level to ensure the power demand of users. By installing a certain number and capacity of STATCOMs on the load side, after the fault is cleared, it can provide sufficient reactive power and restore the stability of the grid voltage, improve the quality of grid power supply, avoid long-distance transmission of reactive power, and reduce the overall po...

AI Technical Summary

Problems solved by technology

However, in the process of implementing the present invention, the inventors found that the prior art has at least the following problems: the fixed-point and constant-volume programming of STATCOM is a mixed integer programming problem, and the configuration planning method of the prior art completely separates the fixed-point and constant-volume programming of STATCOM It turns out that fixed-point and constant-volume planning cannot be considered as a whole, and the effect of configuring STATCOM is not good.

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