Lightning arrester resistive current source simulation system

Abstract

The invention provides a lightning arrester resistive current source simulation system. The lightning arrester resistive current source simulation system is characterized by mainly comprises a task data processing center, a data interactive processing interface module, a human-computer interface, an optical fiber data communication module, a synchronous control measurement module, a harmonic wave power module, a triangular wave pulse power module, a voltage divider module, a precise current measurement module, an adjustable precise capacitor module and an adjustable precise resistor module. The task data processing center, the human-computer interface and the data interactive processing interface module perform operation through a computing control platform, a host machine of the computing control platform is an industrial control computer and is provided with an optical fiber conversion module, and the industrial control computer is respectively connected with the synchronous control measurement module, the precise current measurement module, the adjustable precise capacitor module and the adjustable precise resistor module. The lightning arrester resistive current source simulation system fills the blank of domestic lightning arrester on-line monitoring devices in the resistive current calibration aspect.

Description

technical field [0001] The invention relates to the field of power system test simulation, in particular to a simulation system for a resistive current source of a lightning arrester. Background technique [0002] Surge arrester is an important overvoltage protection device of AC high voltage system, and its safe operation is of great significance to the safe operation of power equipment and even the entire high voltage system. [0003] Since the zinc oxide arrester has good non-linear resistance characteristics, there is no gap inside the zinc oxide arrester. It is precisely because there is no gap that the valve plate is affected by the operating voltage of the power system for a long time during normal operation, as well as internal damp or overheating and other factors, which will cause the deterioration of the non-linear resistance characteristics of the valve plate. This deterioration is mainly manifested in the increase of resistive current under normal voltage, the ...

AI Technical Summary

Problems solved by technology

Especially in recent years, various so-called surge arrester online monitoring devices have appeared in the domestic market. The functions, principles, and monitoring quantities of the devices vary, and the names of the devices are varied. The market is very chaotic, and at the same time, there is a lack of relevant standards and equipment. Detect and evaluate the quality of arrester on-line monitoring equipment

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