Transformer area phase identification method based on synchronous sampling of concentrator and electricity meter

Abstract

The invention relates to a transformer area phase identification method based on synchronous sampling of a concentrator and an electricity meter. The concentrator is synchronized with a collector, theconcentrator and the collector do not include time delay almost, and thus, after that the concentrator issues an ordered sampling instruction to the collector, the concentrator and the collector start data collection in the same ordered sampling time point, and the accuracy of the transformer area phase identification is improved; three-phase voltage data, collected by the concentrator, of a master meter of a transformer area and voltage data, obtained by the concentrator from the collector, of the single-phase electricity meter are processed to obtain standard deviations of the voltage of the single-phase electricity meter relative to phases of voltages of the master meter of the transformer area, and the phase connected to the single-phase electricity meter is determined according to whether voltage fluctuation curves between the single-phase electricity meter and the three phases of the master meter of the transformer area are similar on the basis of the three standard deviations.The phase identification rate of the single-phase electricity meter in the transformer area can be improved.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a phase identification method of a station area based on synchronous sampling of a concentrator and an electric meter. Background technique [0002] In the power system, the accurate identification of the phase of each single-phase meter in the station area is not only conducive to the quantification of the phase load and group loss of the station area, the realization of accurate monitoring and analysis of the line loss in the station area, but also can be guaranteed in the station area. On the basis of the power balance and safety of the district distribution transformer, the loss during the power transmission process should be minimized, which will help the line loss management personnel to find and solve problems in a targeted manner. At present, the phase identification of each single-phase ammeter in the station area mainly includes adopting the power outage method and adding ...

AI Technical Summary

Problems solved by technology

However, this phase recognition detection method requires the support of concentrators, routing modules and electric energy meters, and the cost of promotion is relatively high.

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