A test method for single-phase liquid crystal ammeter

Abstract

The invention discloses an inspection equipment for a single-phase liquid crystal electricity meter. The inspection equipment includes a housing, an electricity meter cavity, a live line zero line inlet wire and a live line zero line outlet wire and also includes a jack cylinder connected with a top board. The top board is provided with round table shaped quick wiring posts corresponding to four wiring holes in the single-phase liquid crystal electricity meter and the round table shaped quick wiring posts are separately connected with the live line zero line inlet wire and the live line zero line outlet wire. The bottom of the electricity meter cavity is provided with a plurality of guide posts aligned to screw holes in the bottom of the single-phase liquid crystal electricity meter. The upper surface of the housing is provided with an interference coil capable of rotating around an axis to the above of the electricity meter cavity. The inspection equipment is provided with a signal transceiving module in communication with the single-phase liquid crystal electricity meter and a signal processing module processing signals of the signal transceiving module. The inspection equipment provided by the invention has advantages of realizing integrated inspection of the electricity meter before delivery and being simple in structure, quick and convenient in operation, comprehensive in inspection items, direct in inspection results and the like.

Description

technical field [0001] The invention and the field of electrical appliances, in particular, relate to a testing device and testing method for a single-phase liquid crystal electric meter. Background technique [0002] With the development of the economy, the traditional grid must develop into a smart grid, which puts forward higher requirements for the interface capabilities, communication capabilities, and data processing capabilities of power supporting facilities and equipment. As the most important part of power metering, the traditional inductive energy meter is far from meeting the needs of the entire society and economic development. [0003] Based on the development of basic technology, electronic energy meters have gradually replaced inductive energy meters. In order to further meet the needs of production development, the State Grid has promulgated design standards for smart energy meters. Energy meter companies across the country will design a smart energy meter a...

AI Technical Summary

Problems solved by technology

[0005] However, it cannot be ignored that since the invention of electric meters, electricity stealing and anti-stealing technologies have been constantly competing and developing. At present, the low-level stealing of most criminals has been basically eliminated through digital electric meters and one meter per household. However, high-level stealing behaviors are still repeatedly prohibited, and because of the confidence brought by digital meters to the power sector and the large reduction in meter reading employees, on-site monitoring has been greatly reduced. Once the stealing is discovered, the new technology can escape the existing LCD meters. For example, the meter controller interferes with the meter index through the oscillating circuit, steals electricity in various ways before entering the meter, and uses abnormal electricity consumption at home to interfere with the meter and other methods of stealing electricity. extend

[0006] The current liquid crystal digital meters are not anti-interference or have weak anti-interference ability, and the oscillating current can be generated by the meter controller to interfere with the meter; secondly, it is usually only possible to record and send the voltage and current curves to the server, through manual monitoring or software analysis. However, there are tens of thousands of electricity users in any area, and it is impossible to use manual monitoring to find out; software analysis is used because the possibility of abnormal curves is not only stealing electricity, but often misjudgment, causing dispatch A lot of manpower is wasted in on-site monitoring, and we can only take partial spot checks among a large number of abnormalities, or improve the fault tolerance rate, artificially construct logic, and screen out those that are not like stealing electricity, but will cause a large number of stealing behaviors to take advantage of

Therefore, the stealing phenomenon has not been completely overcome.

Moreover, most of the smart meters and liquid crystal meters on the market today have primitive inspection methods, and manual wiring is used for wiring. There is no more comprehensive inspection method, such as no anti-interference, electricity theft, etc., and no more convenient inspection equipment for integrated factory inspection.

[0007] On the same day, the inventor applied for a patent titled "A Single-phase Liquid Crystal Meter and Its Control Method That Eliminates Stealing Electricity", but because the meter adopts a new technical solution, there is no supporting inspection equipment and inspection method

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