Single live wire electric energy metering apparatus

An electric energy metering device and a single live wire technology, which is applied in the direction of measuring devices, measuring electric variables, and electric power measurement by applying digital technology, can solve the problems of load power and electric energy metering relying on neutral wires, and large volumes of electric energy metering devices

Pending Publication Date: 2019-09-13
SHENZHEN MANTUNSCI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a single live wire electric energy metering device, which aims to solve the problem that the power and el

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  • Single live wire electric energy metering apparatus
  • Single live wire electric energy metering apparatus
  • Single live wire electric energy metering apparatus

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0038] It should be noted that the descriptions involving "first", "second" and so on in the present invention are only for the purpose of description, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the meaning of...

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Abstract

The invention discloses a single live wire electric energy metering apparatus, comprising a voltage detecting device and a current collecting device, wherein the voltage detecting device is respectively connected with a live wire and a null line, and the current collecting device is connected with the live wire; the voltage detecting device detects a zero crossing point signal of an alternating current power supply on the live wire and the null line, queries a voltage sine wave data table at first preset frequency to obtain multiple instantaneous voltage values when the zero crossing point signal is detected, and synchronously sends a sampling control signal to the current collecting device during each inquiry; and the current collecting device synchronously collects a current signal on the live wire according to each sampling control signal, obtains multiple instantaneous current values, and determines power data and electric energy data of a load connected to the live wire and the null line according to the multiple instantaneous voltage values and the multiple instantaneous current values. The single live wire electric energy metering apparatus disclosed by the invention can realize the metering of the power and the electric energy of the load by using a single live wire, thereby solving the problem that the metering of the power and the electric energy of the load depends on the null line and the problem that the existing electric energy metering apparatus is bulky due to the safety problem.

Description

technical field [0001] The invention relates to the technical field of power metering, in particular to a single live wire electric energy metering device. Background technique [0002] With the development of society and the improvement of people's living standards, the number of various electrical appliances is increasing. Many current building energy-saving solutions must be based on real-time measurement and monitoring of power consumption and load quality of different loads, especially in the second The input or output of the first-level, third-level or final distribution box measures the power consumption data of the load, and then takes some targeted energy-saving measures, such as manual control and timing control of high-energy-consuming loads etc. to reduce power loss. [0003] However, the existing electric energy metering devices all require the cooperation of the neutral wire and the live wire. Considering the safety regulations of electric energy metering, a s...

Claims

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Application Information

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IPC IPC(8): G01R21/133G01R22/10G01R19/00G01R19/25
CPCG01R19/0053G01R19/25G01R21/133G01R22/10
Inventor 魏首勋
Owner SHENZHEN MANTUNSCI TECH CO LTD
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