On-line monitoring system for transformer substation

Abstract

The invention relates to an on-line monitoring system for a transformer substation. The on-line monitoring system comprises a distribution monitoring terminal, a GSM / CDMA channel and a background server, wherein the distribution monitoring terminal is used for acquiring and recording data; the GSM / CDMA channel is used for performing remote data transmission; and the background server is used for performing trend analysis on the acquired and recorded data and maintaining the distribution operation according to the trend analysis result. The acquired data comprises three-phase current, three-phase voltage, active power, passive power, active electric quantity, passive electric quantity, three-phase total active electric quantity, total passive electric quantity, maximum value and minimum value of current and occurrence time of each data. The recorded data comprises historical record of voltage exceeding upper limit and lower limit, historical record of overload current and historical record of open phase and current loss. Through the system, the trend analysis is performed on the acquired and recorded data and the distribution operation is maintained according to the trend analysis result, so that the efficiency of monitoring the distribution operation is increased, the distribution operation is maintained in time, the maintenance timeliness is improved, and the like.

Description

Technical field [0001] The invention relates to an online monitoring system for substations. Background technique [0002] Electricity has become an important energy source that is currently inaccessible to industrial development. However, because a large number of high-power power electronic conversion devices are used in a power system that provides electrical energy, this has brought a serious power pollution problem to the distribution network, resulting in low efficiency of the grid operation. Based on the above reasons, an online monitoring technology of electric energy data has emerged to record and store the changes of electric energy data in real time. When the power quality changes, the amplitude, frequency, voltage fluctuation and three-phase imbalance of the voltage are recorded. Implement alarms, etc., conduct comprehensive monitoring of electrical energy data, and adopt corresponding control strategies based on the monitored data to ensure the realization of power ...

AI Technical Summary

Problems solved by technology

[0003] However, the existing distribution transformer operation management terminal does not effectively monitor the power data, and cannot make predictions and inferences based on historical data, resulting in the inability to effectively maintain the distribution transformer operation in a timely manner.

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