On-line security analysis model data quality evaluation system and evaluation method thereof

Abstract

The invention relates to an on-line security analysis model data quality evaluation system and an evaluation method thereof. The system comprises: a data model index evaluated by secondary indexes ofwind power and photovoltaic modeling, load modeling, transformer modeling, conventional unit modeling, and direct current modeling, an electrical network parameter index evaluated by indexes of generator power limiting value integrity rate, on-line and off-line parameter consistency rate, and interrupting capacity integrity rate, power grid real-time data evaluated by circuit active power integrity rate, busbar voltage error rate, negative load rate, generator negative power ratio, equipment state accuracy rate, generator terminal voltage error rate, and total load accurate rate, and a calculation checking index which includes flow convergence conditions, ground-state equipment out-of-limit rate, transient stability, and three-phase short circuit current. The system respectively grades accuracy of on-line model parameters of a dispatching center of each provincial electric power company, so as to evaluate advantages and disadvantages of accuracy of the on-line security analysis model parameters of each company, for each company to improve.

Description

technical field [0001] The invention relates to the field of real-time operation of a large power grid, in particular to an online security analysis model data quality evaluation system and an evaluation method thereof. Background technique [0002] The data sources of the online safety analysis function include state estimation data and offline operation mode data. At present, the quantitative evaluation results of various types of safety and stability problems are given separately and the methods are not uniform. There is a lack of analysis of the accuracy of the online model and the quality of the online data. The automatic evaluation function of the system cannot quantify the security and stability of the power grid from the perspective of the system as a whole. Contents of the invention [0003] In order to solve the deficiencies in the above-mentioned prior art, the object of the present invention is to provide an online security analysis model data quality evaluatio...

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Problems solved by technology

[0002] The data sources of the online safety analysis function include state estimation data and offline operation mode data. At present, the quantitative evaluation results of various types of safety and stability problems are given separately and the methods are not uniform. There is a lack of analysis of the accuracy of the online model and the quality of the online data. The automatic evaluation function of the system cannot quantify the security and stability of the power grid from the perspective of the whole system

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