HPLC module with voltage measurement function, and meter voltage error judgment method thereof

Abstract

The invention discloses an HPLC module with a voltage measurement function. The HPLC module with the voltage measurement function comprises an HPLC module and a voltage measuring device, and the voltage measuring device comprises a voltage transformer and a metering chip which are connected. The invention further discloses a meter voltage error judgment method of the HPLC module with the voltage measurement function. The method comprises the following steps: if the voltage of a carrier module is greater than a meter voltage, negative error out-of-tolerance occurs in meter voltage measurement;if the voltage of the carrier module is smaller than the meter voltage, positive error out-of-tolerance occurs in meter voltage measurement; and if the voltage of the carrier module is equal to the meter voltage, the meter voltage measurement does not have out-of-tolerance. An existing HPLC module is modified to measure the voltage of the carrier module, and the voltage is compared with the metervoltage, so that whether the meter voltage measurement is out of tolerance or not is judged more accurately and effectively.

Description

technical field [0001] The invention relates to the technical field of electricity collection, in particular to an HPLC module with voltage measurement and a meter voltage error judging method. The HPLC is a broadband high-speed power line carrier. Background technique [0002] There are a large number of household meters. During the long-term operation, the performance of some meter components is degraded or damaged, resulting in inaccurate measurement. The main performance is that the voltage or current is out of tolerance, and there is a problem of under-metering or over-metering. However, household meters are not regularly calibrated, and hidden dangers of failure exist for a long time. If the electricity is under-metered, it will cause losses to the power supply department. If the electricity is over-metered, it may cause service complaints and even cause major public opinion. [0003] Line loss analysis in the station area is one of the means to monitor metering faults...

AI Technical Summary

Problems solved by technology

During the normal electricity consumption process of residents, the current of live wire and neutral wire is a series circuit, and the value is the same at the same time, such as figure 2 As shown, the electricity consumption information collection system has realized the daily collection of the voltage, live wire current, and neutral wire current of residential users at four time points. Only one voltage is sampled (the three-phase meter is the three-phase phase voltage), and there is no reference comparison, so it is impossible to judge whether the voltage measurement of the meter is out of tolerance

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