Parameter setting equipment and method for subsynchronous oscillation damping controller

Abstract

The invention relates to the technical field of parameter setting of subsynchronous oscillation damping controllers, and discloses parameter setting equipment and method for the subsynchronous oscillation damping controller. The subsynchronous oscillation damping controller comprises a modal filter and control equipment, wherein the modal filter is used for carrying out filtration on a rotating speed signal of a generator set to obtain a corresponding modal signal; the control equipment is connected with the modal filter and is used for achieving control on subsynchronous oscillation according to the modal signal; the control equipment comprises a compensation device; and the compensation device is connected between the modal filter and the control equipment, and is used for carrying out setting according to the filtered modal signal. The modal signal output by the modal filter is set through the compensation device which is connected with the modal filter in the subsynchronous oscillation damping controller in series; the accuracy of parameters in the subsynchronous oscillation damping controller is improved; and the subsynchronous oscillation damping controller can relatively well suppress subsynchronous oscillation, so that the generator set can be relatively well protected.

Description

technical field [0001] The invention relates to a parameter setting technology of a subsynchronous oscillation damping controller, in particular to a parameter setting device and method of a subsynchronous oscillation damping controller. Background technique [0002] With the continuous and rapid development of my country's national economy and the rapid growth of electricity load, domestic large-scale hydrothermal power bases have been developed successively, so that large-scale and long-distance power transmission has become the main development trend of my country's power grid. In order to reduce the occupation of line erection and transmission corridors, series capacitor compensation technology is adopted in the grid system. [0003] However, series capacitor compensation may cause subsynchronous resonance in the power system, and then cause damage to the shafting of the turbogenerator set. Subsynchronous oscillation can cause shafting damage caused by torsional stress....

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a parameter setting device and method for a subsynchronous oscillation damping controller, which is used to solve the problem of low accuracy of the parameters of the subsynchronous oscillation damping controller

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