Method and device for implementing phase discrimination by using wireless communication technology

Abstract

The present invention discloses a method and a device for implementing phase discrimination by using a wireless communication technology. The method comprises: a measurement apparatus sends a "fixed length zero-cross detection frame" to a to-be-tested phase apparatus, and starting to record a reference phase line power frequency zero-cross point moment; the to-be-tested phase apparatus waits for occurrence of a phase zero-cross point event of the to-be-tested phase apparatus; after a zero-cross point event occurs at an end of the to-be-tested phase apparatus, the to-be-tested phase apparatus sends back a "fixed length acknowledgement frame"; after receiving the "fixed length acknowledgement frame", the measurement apparatus records a moment of finishing receiving the "fixed length acknowledgement frame"; the measurement apparatus compares the moment of finishing receiving the "fixed length acknowledgement frame" with the reference phase line power frequency zero-cross point moment, andcalculating a phase of the to-be-tested phase apparatus according to a difference 6.67 ms of a positive zero-cross point or a negative zero-cross point of a three-phase alternating current electricalsignal or according to a period T of 20 ms of the three-phase alternating current electrical signal. According to technical solutions of the present invention, phase discrimination can be performed without transforming an existing electricity information collection system.

Description

technical field [0001] The invention relates to phase identification technology, in particular to a method and equipment for realizing phase identification through wireless communication technology. Background technique [0002] After analyzing the current power system, it is found that there is a lack of effective monitoring and prediction methods for the type of line fault, the scope of fault power outage, insurance drop or switch trip location, etc. Due to lack of understanding of the on-site situation, misjudgment of the situation occurred from time to time, resulting in unreasonable emergency repair plans, improper allocation of emergency repair forces, prolonging the troubleshooting time, affecting the quality of power supply, and causing large economic losses and social impacts. Realizing effective monitoring of power outages can greatly improve the management level of power distribution operation and maintenance. In order to realize the accurate location of the powe...

AI Technical Summary

Problems solved by technology

The correlation calculation in this method requires high data quality and poor calculation accuracy

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