Power gird remote measurement alarm strategy method based on floating threshold judgment method

Abstract

The invention relates to the technical field of power gird monitoring acquisition, and particularly relates to a power gird remote measurement alarm strategy method based on a floating threshold judgment method. The remote measurement alarm strategy method comprises the steps that 1) a central processing module sets the dead data alarm threshold of remote measurement according to the historical non-refresh misjudgment data of remote measurement; 2) the central processing module forms a floating threshold through real-time floating of the alarm threshold in the step 1) in the safety zone so that misjudgment of remote measurement dead data monitoring can be reduced; and different alarm threshold safety zones preset for different types of remote measurement are stored in a storage module so as to ensure that each type of remote measurement has the most reasonable monitoring strategy; and 3) when the central processing module judges that the non-refresh time of remote measurement is greater than the alarm threshold of the moment, the remote measurement is judged to be the dead data. The single and fixed mode of the remote measurement non-refresh state judgment threshold can be changed and the accuracy of dead data monitoring can be enhanced by the diversified alarm thresholds.

Description

technical field [0001] The invention relates to the technical field of power grid monitoring and collection, in particular to a power grid telemetry alarm strategy method based on a floating threshold determination method. Background technique [0002] The power system is a real-time changing system, which requires continuous tracking and monitoring of its operation. With the improvement of automation level and the full implementation of unattended substations, the monitoring of power grid equipment completely depends on the relevant electrical quantities and operation information transmitted to the main station in real time through the dispatching data network, and remote measurement is one of the most important monitoring information. one. For non-standby and non-empty-charged equipment, when the interval measurement and control device crashes or the working conditions of the plant station have problems, it is often necessary to monitor the dead data (that is, not refresh...

AI Technical Summary

Problems solved by technology

[0004] However, with the continuous development of the power grid, the amount of monitoring and operation information is increasing and the types are becoming more and more complex. The existing single fixed threshold alarm strategy can no longer meet the needs of real-time and accurate monitoring.

On the one hand, if the fixed threshold is too large, it will lead to increased monitoring risks, but if it is too small, it will lead to a large number of misjudgments and affect the correct judgment of the staff on duty

On the other hand, due to the differences in the changing rules and speeds of different types of telemetry, the judgment threshold for all types of telemetry is a uniform fixed value, which greatly increases the misjudgment rate of different types of telemetry.

For the power grid where the equipment status is constantly changing, the single and fixed judgment threshold affects the rationality of the telemetry alarm strategy, and the resulting misjudgment also seriously interferes with the monitoring of the telemetry information by the on-duty personnel.

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