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 a wiring error of a distribution transformer monitoring terminal. Background technique

[0002] The distribution transformer monitoring terminal is an important device of the "smart distribution network" in the "smart grid". It is installed on the low-voltage side of a 10KV distribution transformer to collect and analyze the three-phase voltage and current information on the low-voltage side of the distribution transformer. According to statistics, various transformer working condition data are formed and stored in the built-in non-volatile memory. At the same time, it can communicate with the distribution automation master station through GPRS\CDMA\Ethernet. The distribution transformer monitoring terminal must be wired correctly to correctly reflect the voltage, current power and electrical energy information of the distribution transformer. However, due to the unclear identification of the primary equipment ...

Images