High-voltage DC transmission fault recording and alarming device

Abstract

The invention relates to a high-voltage DC transmission fault recording and alarming device. The device comprises a fault recorder for collecting fault record data, an analysis terminal for drawing a fault data curve according to the fault record data, and a GSM module connecting to a mobile terminal. The fault recorder, the analysis terminal and the GSM module are connected in sequence. The current and voltage data of faults of a high-voltage DC transmission system is collected by the fault recorder and serves as fault record data, and alarming signals and the fault data curve drawn by the analysis terminal are sent to the mobile terminal by the GSM module when the high-voltage DC transmission system malfunctions. Compared with the prior art, the high-voltage DC transmission fault recording and alarming device has the advantages that the analysis terminal draws the fault data curve on the basis of the fault record data, and the curve is sent to a mobile terminal carried by a worker through the GSM module, in this way, instant alarming and feedback can be achieved, a fault report can be quickly produced, the workload of workers is reduced, and the work efficiency is improved.

Description

technical field [0001] The invention relates to a power system operation and maintenance technology, in particular to a high-voltage direct current transmission fault recording and alarm device. Background technique [0002] With the continuous development of the scale of cross-regional power grids, ultra-high voltage converter stations and UHV converter stations are playing an increasingly important role in the power grid, and the safety and reliability requirements of the power grid for converter stations are also getting higher and higher. Once the converter station in the HVDC transmission system has an abnormal situation or a fault lockout, it will cause certain disturbances and impacts to the power system at the receiving end or the sending end, threatening the safe and stable operation of the system. Once a disturbance or other abnormal situation occurs in the system, the fault recorder in the power grid will meet the relevant trigger conditions and record the data. ...

AI Technical Summary

Problems solved by technology

Although the converter station is equipped with a fault recorder in the AC and DC systems, due to the particularity of the converter station, the faults of equipment in different areas have their own characteristics, and the fault form and mechanism of the DC core equipment are different from those in the AC system. There is a big difference in the general components of the AC system, and the fault diagnosis and analysis software usually used in the AC system cannot be used for the fault analysis of the DC transmission system. In addition, when the analyst manually analyzes the fault recorder data, the fault detected by different fault recorders Combined analysis of electrical parameters, or comparative analysis of the data recorded by the same fault recorder at different times and under different fault conditions, is conducive to analyzing the cause of the abnormality or fault.

However, due to the differences in the consequences of different DC protection actions

[0003] In addition, because the data of the fault recorder cannot be saved, and the performance of the fault recorder cannot withstand some continuous network data packets, it also affects the reliability of the fault recorder

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