A smart substation online monitoring parameter trend warning method
An intelligent substation and trend technology, applied in the electrical field, can solve the problems of low trend analysis accuracy and heavy workload of equipment maintenance personnel, and achieve the effect of engineering flexibility, easy implementation and improved accuracy.
Active Publication Date: 2018-11-09
XUJI GRP +3
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[0006] The purpose of the present invention is to provide a smart substation online monitoring parameter trend warning method to solve the problems of low accuracy of trend analysis and heavy workload of equipment maintenance personnel in smart substations
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[0030] The technical scheme of the present invention is: take the monitoring history data of a period of time after the online monitoring device is stable as a sample, calculate the correlation coefficient between the monitoring value and time, and determine the early warning threshold according to the trend correlation coefficient; before the early warning analysis, continuously from the monitoring history Multiple samples are obtained from the data, and the correlation coefficient between the monitoring value and time is calculated for each sample, and the relationship between the correlation coefficient and the warning threshold is compared. If the correlation coefficient trend continues to grow and is greater than the warning threshold, an early warning signal is output.
[0031] Below in conjunction with accompanying drawing, technical scheme of the present invention will be further described:
[0032] Such as figure 1 Shown is the flowchart of early warning processing of...
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The invention relates to an intelligent transformer station online monitoring parameter trend early warning method. According to the method, the historical monitoring data of an online monitoring device for a time segment after stabilization is taken as samples, a relevant coefficient of a monitoring value and the time is calculated, and an early warning threshold is determined according to the relevant coefficient; before early warning analysis, multiple samples are continuously acquired from the historical monitoring data, a relevant coefficient of a monitoring value and the time for each sample is calculated, the relevant coefficients and the early warning threshold are compared, if the relevant coefficient trends to continuously grow and is greater than the early warning threshold, an early warning signal is outputted. The method is advantaged in that trend analysis and early warning can be automatically carried out, trend analysis accuracy is improved, and workload of equipment maintenance personnel is reduced.
Description
technical field [0001] The invention relates to an on-line monitoring parameter trend warning method of an intelligent substation, which belongs to the field of electricity. Background technique [0002] With the promotion and application of smart substations, a large number of on-line monitoring devices have been installed in substations, and a large amount of on-line monitoring information of primary equipment has been obtained. The main purpose of online monitoring is to use primary equipment monitoring information for operation status analysis, evaluation and early warning, and the trend analysis of parameters is one of the effective means of equipment operation condition analysis. [0003] At present, the trend analysis method commonly used in the online monitoring system is to connect the monitored historical data point by point in chronological order and draw a curve. System users can judge the trend of the monitoring data by observing the shape of the curve. This me...
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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 龚东武周水斌卢声郭宏燕王龙阁陈磊王志成路光辉雍明超庄益诗王伟杰周钟曾国辉梁武民
Owner XUJI GRP