Steady-state data-based SCADA telemetry wrong data on-line detection system

Abstract

The present invention relates to a steady-state data-based SCADA telemetry wrong data on-line detection system. The system is technically characterized by comprising a data processing module, a topology data module, a node balance checking module, a line balance checking module, an evaluated value calculation module and an online alarm module. According to the technical scheme of the invention, an effective and feasible method is provided for the online accurate detection of telemetry wrong data. The system can be applied to a scheduling master station. The system serves as one part of a D5000 system and realizes the online and real-time detection function for telemetry data through the node balance and the line balance check based on steady-state telemetry data. Based on the system, the wrong data of telemetry data and a bad measuring point can be timely and accurately detected in the online manner, and then an alarm prompt is sent out. Therefore, reliable telemetry data are provided for the calculation of power grid tidal current, short circuit and stability. Meanwhile, the calculation accuracy for subsequent advanced applications is improved.

Description

technical field [0001] The invention belongs to the technical field of online detection of SCADA telemetry data in electric power systems, and relates to the online detection of SCADA telemetry data based on the principles of steady-state measurement data processing, node balance and line balance, especially an online detection of SCADA telemetry errors based on steady-state data system. Background technique [0002] SCADA telemetry data is the basic data of the power grid, which directly determines the reliability of power grid power flow, short circuit and stability calculations, and errors cannot be made. Once a mistake is made, it will inevitably affect the calculation accuracy of subsequent advanced applications. [0003] Due to the large number of measuring equipment and the long distance and complexity of the communication system in the power system, it is inevitable that there will be problems during the operation for many years, and it is difficult to find out in t...

AI Technical Summary

Problems solved by technology

In reality, most of the equipment parameters come from actual measurement or theoretical calculation, and the error is relatively large; SCADA telemetry data is mixed with transient data, which causes a lot of random interference, and the clocks are seriously out of sync; Knife switches and transformer taps still need manual maintenance, and the refresh of remote signaling data is lagging behind; the above problems seriously affect the accuracy of state estimation calculations, so remote measurement errors and bad measurement points are seriously missed, missed judgments, and even misjudgments. The problem has not been effectively resolved so far

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