Monitoring method for electric energy quality

Abstract

The invention relates to a monitoring method for electric energy quality, which relates to four functions of load phase modulation, on-load capacitance regulation, reactive compensation and on-load voltage regulation, and can strictly judge and execute load phase modulation, on-load capacitance regulation, reactive compensation and on-load voltage regulation in sequence. According to the method, operating parameters and state information of a distribution transformer can be monitored and collected in real time, the reasons of the electric energy quality problem can be comprehensively judged, three phase loads of the distribution transformer can be automatically controlled to be balanced as much as possible, the no load loss of the distribution transformer can be reduced, the power factor is promoted, the voltage quality is improved, a station area of the distribution transformer can be kept in a economic operation state, and therefore, the monitoring on the electric energy quality in the generalized aspect can be realized, and the electric energy supply is improved.

Description

technical field [0001] The invention relates to the field of power quality, in particular to a method for monitoring power quality. Background technique [0002] With the popularization and application of high-power household appliances, the electricity consumption in various regions is increasing year by year, so higher requirements are put forward for the power quality. In rural areas where agricultural production and residential electricity are the main source of electricity, the seasonal characteristics of electricity load are prominent, mainly concentrated in the summer and autumn busy seasons, and a large number of migrant workers returning home during the Spring Festival. The concentrated use of electricity by power appliances accounts for more than 80% of the annual electricity consumption. Due to the increase in the proportion of non-linear loads in rural areas, the demand for reactive power loads has increased, and the natural power factor of rural distribution st...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a monitoring method for power quality, comprehensively controls the power quality, and solves the problem of large no-load loss of distribution transformers in rural distribution stations, automatic reactive power compensation, automatic voltage regulation and three-phase load instability. Balance and other issues, improve the economic operation level of rural low-voltage distribution network, improve management efficiency, and improve the quality of rural power supply

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