Method and device for collecting data in automatic meter reading system

Abstract

The invention relates to a method and a device for collecting data in an automatic meter reading system. The device comprises an electric energy meter data collector and a large meter box for containing the electric energy meter data collector and electric energy meters, wherein the electric energy meter data collector is mainly composed of a single chip, a memory module, an RS485 communication module, a power line carrier communication module, an illegal opening box detection module and a power module. In the automatic meter reading system composed of a main station, a concentrator, the electric energy meter data collector and the electric energy meters, the invention adopts a data collecting method of electric energy meter user grouping, and therefore the method adapts to the need of collecting power data from the electric energy meters with different power utilization ways in a three-phase four-wire power supply network, avoids three-phase fire wire load imbalance, and achieves the effective use of the power supply network. At the same time, the method can detect whether the data collector or the electric energy meters are illegally opened and record relevant information, therefore preventing electric larceny from occurring.

Description

Technical field [0001] The invention belongs to the technical field of automatic meter reading of electric energy meters, and particularly relates to a carrier electric energy meter data acquisition terminal. Background technique [0002] The use of low-voltage power line carrier as the communication scheme is currently an important direction for the development of automatic meter reading systems in the world. In my country's power supply network, due to the uneven types of meters used by users, centralized meter reading has encountered some problems. For example, the electric energy data of fully electronic electric energy meters and electromechanical pulse electric energy meters cannot be read uniformly. In response to this problem, there are recent related studies. The Chinese patent ZL200620062399.7 published on August 29, 2007 discloses a "bus-based modular remote meter reading terminal", which uses a bus circuit that can plug in various functional modules. On the backplane...

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Problems solved by technology

[0003] These two types of energy meter data acquisition terminals are adapted to the needs of collecting electricity data from energy meters of different structures by improving the internal structure, but if in a three-phase four-wire power supply network, some users use single-phase Electricity, some users use three-phase electricity in their homes, so far there is no electric energy meter collector that can adapt to the situation that single-phase electricity and three-phase electricity exist simultaneously in the same power supply network, that is, it cannot be used in the same power supply network. In the network, the power data is collected uniformly from the electric energy meters of different power consumption modes at the same time

At the same time, in the same power supply network, due to the different wiring methods of single-phase meters and the lack of unified management, load imbalances are prone to occur among the three-phase live wires, which affects the effective use of the power grid

[0004] In addition, if the electric energy meter data collector and the electric energy meter are illegally unpacked or opened by the electricity thief, but they are not found and recorded, it will not only cause the loss of national electricity revenue, but also damage the electric energy meter data collector. and power facilities such as energy meters

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