Method for rapidly judging wiring error of power distribution transformer monitoring terminal

Abstract

The invention discloses a method for rapidly judging a wiring error of a power distribution transformer monitoring terminal. The method is characterized by comprising two steps of voltage detection and current return accuracy detection, wherein the intelligent judgment on the wiring error of the power distribution transformer monitoring terminal is realized according to the phase relationship between a three-phase voltage and a current. According to the method, the method is embedded into the terminal in mode of embedded software directly; the automatic operation can be realized when the terminal is powered on, and then the wiring error of the terminal is judged automatically; and the installation personnel are prompted through a liquid crystal interface and a buzzer; the accuracy rate of the installation is improved; and the labor waste caused by secondary construction is avoided.

Description

technical field

[0001] The invention relates to a method for judging wiring errors of distribution transformer monitoring terminals. Background technique

[0002] The distribution transformer monitoring terminal is an important device of the "smart distribution network" in the "smart grid". Statistics, forming various transformer working condition data and storing them in the built-in non-volatile memory, and communicating with the master station of power distribution automation through GPRS\CDMA\Ethernet and other methods. The distribution transformer monitoring terminal must be wired correctly in order to correctly reflect the voltage, current power and electric energy information of the distribution transformer. However, due to the unclear identification of the primary equipment or errors in the primary line itself, the correct wiring is often not possible, resulting in incorrect information reflected by the terminal. It is often necessary to arrange line personnel after...

Images