Measurement and control method for three-phase four-wire metering device wiring detector

A three-phase, four-wire, metering device technology, which is applied in the direction of measuring devices, instruments, and measuring electrical variables, can solve problems such as increasing the cost of electricity metering operation and maintenance, checking electricity theft, correcting large errors in electricity, and making it difficult to refund electricity fees. Achieve the effect of reducing manual blind inspection, less false alarms, and reducing measurement operation and maintenance costs

Active Publication Date: 2018-01-26
ELEFIRST SCI & TECH
View PDF7 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the three-phase four-wire metering device, it is often used to directly connect the voltage line and current line (through the current transformer to the energy meter), or use Y/Y connection voltage transformer and three current transformers to convert high voltage and large current into low voltage. The current signal is introduced into the watt-hour meter through the secondary circuit, so there are often wrong wirings that cause serious inaccuracy in power metering
At present, only three-phase voltage, voltage phase sequence, total power factor an

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Measurement and control method for three-phase four-wire metering device wiring detector
  • Measurement and control method for three-phase four-wire metering device wiring detector
  • Measurement and control method for three-phase four-wire metering device wiring detector

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] In order to explain the technical methods and advantages of the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments are only used to explain the present invention and are not limited to the present invention. The technical solutions of the embodiments include:

[0030] 1. Detect the phase voltage and current through the first element, second element and third element of the three-phase four-wire metering device, or set up a circuit to form a three-phase four-wire auxiliary metering device to collect the first element and the second element of the three-phase four-wire metering device Phase voltage and current detected by the second element and the third element;

[0031] 2. When three-phase four-wire metering device or three-phase four-wire auxiliary metering device (the following three-phase four-wire auxiliary metering devi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a measurement and control method for a three-phase four-wire metering device wiring detector. Through comparing a detection phase voltage and a detection current with a measurement phase voltage and a measurement current in aspects of magnitude and phase difference, whether a three-phase four-wire metering device is in a wiring fault and can not accurately measure three-phase power is determined, electric quantity correction is further carried out, complex hidden false wiring can be automatically detected, correction electric quantity and return electric quantity are calculated, and false alarm is reduced.

Description

[technical field] [0001] The invention relates to a measurement and control method of an automatic detection instrument for wiring of a three-phase four-wire metering device. [Background technique] [0002] In the three-phase four-wire metering device, it is often used to directly connect the voltage line and current line (through the current transformer to the energy meter), or use Y / Y connection voltage transformer and three current transformers to convert high voltage and large current into low voltage. The current signal is introduced into the electric energy meter through the secondary circuit, so there are often wrong wirings that cause serious inaccuracy in electricity metering. At present, only three-phase voltage, voltage phase sequence, total power factor and whether the current is reversed, voltage loss, current loss, etc. can be checked. Detection, it is difficult to achieve accurate automatic detection and identification of complex and concealed wrong wiring, so...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01R35/04
Inventor 陈通陈劲游
Owner ELEFIRST SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap