SVG controller parameter identification method based on RTDS test data

Abstract

The invention discloses an SVG controller parameter identification method based on RTDS test data, and relates to a parameter identification method. At present, the efficiency is low due to the limitation of partial field test conditions and methods. The method comprises the following steps: carrying out in-loop test on SVG output responses of multiple control modes under multiple working conditions to obtain response output data; establishing a simulation system which is the same as the RTDS test environment in BPA software, and performing transient simulation calculation on the SVG controller; based on the RTDS in-loop test data, identifying the control parameters of the SVG controller by applying an automatic parameter identification algorithm, comparing the BPA simulation result with the RTDS in-loop test result, and calculating a control error; if the control error does not meet the requirement, performing iterative parameter correction by adopting a nonlinear least square identification method until an error index is met; and completing parameter identification work to obtain an SVG controller model and parameters. According to the technical scheme, simulation results are repeatable, parameters are easy to adjust, working conditions are easy to simulate, and test efficiency is high.

Description

technical field [0001] The invention relates to a parameter identification method, in particular to an SVG controller parameter identification method based on RTDS test data. Background technique [0002] The research and actual application of static var generator (static var generator, SVG) controllers require accurate and detailed dynamic model parameters and online debugging technology, lack of actual parameters and do not take into account the influence of power electronic devices and operating conditions It will lead to a serious discrepancy between the transient stability calculation results and the actual working conditions. [0003] In order to collect the response data of SVG when the power system is disturbed, the traditional data collection method generally adopts the field test method to test the control performance of the SVG device under different working conditions and collect the response data. However, due to the limitation of some test conditions and metho...

AI Technical Summary

Problems solved by technology

However, due to the limitation of some test conditions and methods on site, it is generally difficult to carry out all the dynamic performance tests required by the test standards. At the same time, due to the medium and high voltage application environment, the test and rectification cycle is long and the efficiency is low.

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