A method and device for reading frozen electric power carrier wave suitable for low-voltage distribution station area

Abstract

The invention relates to a method and device for reading a frozen power carrier wave suitable for a low-voltage distribution station area. The method includes the following steps: initializing the "read mark" Fin of each metering device in the low-voltage distribution station area; judging when the reading is frozen Check whether the point has arrived; refresh the "copied flag" Fin of each metering device; read the frozen electricity n times on the i-th metering device in turn according to the order of reading the internal cycle of the external cycle metering device at the time of freezing, or follow the external cycle of the metering device. Circularly read the frozen electric quantity of n times on the i-th metering device in sequence in the order of the cycle within the freezing time point. The device includes an intelligent distribution and transformation terminal and a low-voltage distribution station area metering device; the intelligent distribution and transformation terminal is connected to the low-voltage distribution station area metering device through a low-voltage distribution line. The invention improves the success rate and completeness rate of reading the frozen power carrier data in the low-voltage distribution station area, thereby improving the calculable rate of line loss calculation equipment, and the calculation integrity and accuracy of line loss and line loss rate.

Description

technical field [0001] The invention relates to the field of power Internet of things, in particular to a method and device for reading a frozen electric power carrier wave suitable for a low-voltage distribution station area. Background technique [0002] The line loss in the low-voltage distribution transformer area refers to the power loss generated by the transmission lines and various electrical primary and secondary distribution equipment within the power supply range of the transformer in the low-voltage distribution transformer zone. The sum of the power increments of all the end meters within the range in the same period, the difference between the two is the line loss. In addition to reflecting the economic operation level of the power grid, the line loss rate can also reflect whether the installation of the metering equipment is wrong or faulty, whether the maintenance of the power supply level file relationship is correct, and whether there is theft of electricit...

AI Technical Summary

Problems solved by technology

[0006] Compared with optical fiber, cellular or narrowband communication methods, PLC communication or HPLC power carrier communication methods have inherent disadvantages and characteristics of instability and poor reliability, and the power supply circuits in low-voltage distribution stations are mostly in a tree-like radiation structure , the power supply range is large, the environment is complex, the geographical location of the metering equipment is scattered, the distance is long, the carrier communication module is aging, and the maintenance is not timely. It is a common phenomenon that the success rate of one-time copying is difficult to reach 100% or even varies greatly.

Since the line loss calculation uses the current frozen power minus the last frozen power, it is determined that the loss of any frozen data will not only affect the current line loss calculation, but also affect the next line loss calculation

Therefore, the existing frozen power carrier reading scheme in the low-voltage distribution station area has the problem of incomplete reading of frozen power data, which leads to low calculation rate of line loss calculation equipment, incomplete and inaccurate calculation of line loss and line loss rate

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