Voltage loop monitoring system based on comparative analysis of total station data

Abstract

The invention discloses a voltage loop monitoring system based on total station data comparison and analysis. The voltage loop monitoring system comprises a voltage sampling device, a voltage monitoring device and a total station voltage monitoring device; the voltage sampling device is configured to acquire a voltage signal of the total station and transmit the acquired voltage signal to the voltage monitoring device, and the voltage monitoring device processes and analyzes the voltage signal to determine whether the voltage is abnormal. When it is determined that the voltage is abnormal, thevoltage monitoring device saves the voltage signal data and transmits the voltage signal data to the total station voltage monitoring device; and the total station voltage monitoring device finds abnormal data from the voltage data transmitted from the voltage monitoring device, and analyzes the abnormal data to obtain a fault point. The voltage loop monitoring system effectively improves the processing efficiency and reduces the system requirement by utilizing the three-stage processing mode including the voltage data preprocessing, the same type voltage data comparison analysis module, andthe different type voltage data comparison analysis module.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a voltage loop monitoring system based on comparison and analysis of total station data. Background technique [0002] The existing secondary circuit monitoring methods of voltage transformers include basic monitoring of secondary equipment such as protection, measurement and control, etc., but the monitoring accuracy is low, and only the open circuit fault of the voltage circuit can be detected. For example, the TV disconnection blocking method of NARI’s line protection is as follows: [0003] 1. The three-phase voltage vector sum is greater than 8 volts, the protection will not start, and the TV disconnection abnormal signal will be sent after a delay of 1.25 seconds; [0004] 2. When the three-phase voltage vector sum is less than 8 volts, but the positive sequence voltage is less than 33.3V, if the busbar TV is used, the TV disconnection abnormal signal will be sent ...

AI Technical Summary

Problems solved by technology

[0006] 1. It is impossible to effectively monitor the interference of the effective monitoring voltage circuit

When the voltage circuit receives interference, it will cause interference to protection, measurement and control, PMU, fault recording and other devices, but the existing devices cannot alarm it

[0007] 2. Unable to judge faults such as low insulation of the secondary circuit: When the insulation of the secondary circuit of the voltage decreases, it will cause a voltage drop and cause certain damage to the voltage transformer, but the existing device cannot give an alarm for this type of defect

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