Low-voltage transformer area affiliation relation identification system and method based on LC switching

Abstract

The invention provides a low-voltage transformer area affiliation relation identification system and method based on LC switching. The low-voltage transformer area affiliation relation identification system comprises a signal transmitting part and a signal receiving part, the signal transmitting part comprises a control circuit, a forced modulation circuit and a switching circuit. Current signals with characteristic frequencies are fed into the load side of the power grid, similar to switching devices with certain frequencies, different from existing products on the market, high-frequency carrier signals are not injected into the power grid, and the environment of the power grid cannot be affected.

Description

technical field [0001] The invention belongs to the technical field of power supply maintenance of low-voltage station areas, and in particular relates to a system and method for identifying the ownership relationship of low-voltage station areas based on LC switching. Background technique [0002] In recent years, as the State Grid Corporation of China has attached great importance to line loss management, households in the station area have changed their ownership, and a clear network topology relationship in the station area has become particularly important. Due to field wiring errors or system file errors, the phenomenon of user meters in this station area being linked to other station areas often occurs. Success rate, and then affect the line loss. [0003] At present, there are three main ways to manage the "cross-platform area": ​​power outage identification method, load increase monitoring method, and special signal injection detection method. Among them, the powe...

AI Technical Summary

Problems solved by technology

Among them, the power outage identification method is to judge the ownership relationship of individual household meters after the power outage of the entire station area. This method affects the reliability of power supply and will also cause a bad power experience for customers; the method of increasing load monitoring needs to be connected at the user For high-power electrical appliances such as electric welding machines, the ownership relationship is determined by observing the current changes displayed by the ammeter by turning on and off the high-power electrical appliances multiple times. This method is not accurate and may damage the user's electrical equipment; the publication number is CN110646690 A In the comparison document, a method and system for identifying the relationship between households and substations based on characteristic current signals is provided, which can better identify the affiliation of station areas, but this type of equipment is large in size, consumes a lot of power, and is accompanied by heating problems. Some equipment has instantaneous current Up to dozens of amps, there is sound when sending signals, some even cause users to trip, and the instruments on the market are expensive, so they cannot be widely used to solve the problem of "cross-platform area"

Images