Power line fault information monitoring system and monitoring method

Abstract

The invention relates to a power line fault information monitoring system and method, and the system comprises a sensor module, a signal conditioning module, an AD collection module, a central processing module and an upper computer which are connected in sequence, the sensor module is connected with a power line, and a to-be-measured physical quantity is obtained in a multi-channel manner; the central processing module comprises a module based on an FPGA (Field Programmable Gate Array) main control chip, the AD acquisition module is a module based on an AD7616 chip, and the upper computer is provided with Labview software. Compared with the prior art, the method has the advantages that the power grid stability is improved, and the signal processing capacity is high.

Description

technical field [0001] The invention relates to the technical field of power system information monitoring, in particular to a power line fault information monitoring system and method based on AD7616+FPGA. Background technique [0002] With the development of the power system towards intelligence and power electronics, it will inevitably lead to problems such as voltage distortion and harmonic injection in the power grid. In this context, the accurate acquisition and monitoring of power line fault signals becomes particularly important. Therefore, various types of power system monitoring devices have emerged in an endless stream in recent years, and are developing in the direction of intelligence and digitization. At present, there are many monitoring systems using single-chip microcomputer technology and PLC technology in the market. Although they are easy to program and flexible in control, these technologies have problems such as insufficient data processing capability,...

AI Technical Summary

Problems solved by technology

At present, there are many monitoring systems using single-chip microcomputer technology and PLC technology in the market. Although they are easy to program and flexible in control, these technologies have problems such as insufficient data processing capability, insufficient acquisition signal accuracy, and low degree of integration. Synchronous acquisition of phase current and voltage will cause a certain phase difference and cause a large three-phase power error. This error is difficult to accurately compensate through software programming, especially harmonic power, which seriously affects the safe and stable operation of the power system. In severe cases, it will cause large-scale power outages and cause immeasurable losses

The existing method will cause inaccurate records, affect the accurate collection of power system line fault information, and is not conducive to the normal operation of the power system

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