A New Method for Calibrating Digi-Data Input Power Meter

2012 ◽  
Vol 220-223 ◽  
pp. 1507-1513
Author(s):  
Guo Ying Lin ◽  
Shang Li Zhou ◽  
Wei Ming Sun
Keyword(s):  
Electric Power ◽  
Electric Energy ◽  
Input Power ◽  
New Method ◽  
Digital Data ◽  
Data Input ◽  
Analog To Digital ◽  
Power Meter ◽  
Energy Metering ◽  
Power Standard

Recently, China is developing smart grid with great strength, more and more digital substations will be built, therefore, it is time for thinking of the accuracy of the new electric energy metering devices. But the new electric energy metering devices are different from the traditional meters by using Digi-Data interface instead of voltage and current interface, requiring a new method of testing error. By equivalently transforming electric power from analog to digital, we design a special electric power standard with digital-data-interface according to IEC61850. Based on the special electric power standard, this article introduces a new method for calibrating digi-data input power meter.

Analysis of the Energy Metering Problem in Dynamic Environment

2014 ◽  
Vol 668-669 ◽  
pp. 673-676
Author(s):  
Zhuo Wang ◽  
Hai Bao
Keyword(s):  
Steady State ◽  
Electric Power ◽  
Electric Energy ◽  
Dynamic Environment ◽  
First Order ◽  
Energy Metering ◽  
Analytic Expressions ◽  
Engineering Environment ◽  
Linear Elements ◽  
Power Metering

The traditional electric power metering theory is a kind of no-error metering theory in sinusoidal steady-state circuit. However, the applying condition is too rigor, and the engineering environment is hard to fulfil, the application premise should be extended to dynamic. Ideal linear elements are adopted to build a first-order dynamic circuit. And the analytic expressions of the capacitor cumulative electric energy in the charging process are derived theoretically. It points out that the cumulative electric energy of capacitor in dynamic circuit is a nonzero value. This fully demonstrates that the energy metering principle brings error when it is used in dynamic environment.

scholarly journals A New Method to Analyze the Error-wiring of Electric Energy Metering Device

2018 ◽  
Vol 381 ◽  
pp. 012144
Author(s):  
Jia Li ◽  
Wanyu Xue ◽  
Li Gao ◽  
Bing Zhang ◽  
Min Zhou
Keyword(s):  
Electric Energy ◽  
New Method ◽  
Energy Metering

Research the Test Method of the Voltage Transformer Secondary Load in the Three-Phase Three-Wire Electric Energy Metering Device

2014 ◽  
Vol 687-691 ◽  
pp. 3110-3115
Author(s):  
Gu Li ◽  
Zi Ming Fu ◽  
Jie Feng Yan ◽  
Bing Wen Li ◽  
Zhi Rong Cen
Keyword(s):  
Power Supply System ◽  
Electric Energy ◽  
Test Methods ◽  
Test Method ◽  
Testing Methods ◽  
Voltage Transformer ◽  
Secondary Load ◽  
Three Phase ◽  
Energy Metering ◽  
Definition Of

This paper analyzes and studies the definition of the voltage transformer secondary load, examines the practical purposes of the measured values of the voltage transformer secondary load, and presents a variety of testing methods to analyze and compare the differences. This paper gives the test methods of the voltage transformer secondary load when the connection of the voltage transformer is the Y / Y in a three-phase three-wire power supply system, filling the blank of this type of test method in the industry. When other units within the industry carry out such work, the conclusions of this paper are available for reference, and the conclusions of this paper can be referred when drafting relevant regulations in the future.

Study of Wireless Torque Measurement System Based on CC2500

2011 ◽  
Vol 383-390 ◽  
pp. 5300-5303
Author(s):  
Wei Liu ◽  
Xiao Jie Song ◽  
Wen Gang Chen
Keyword(s):  
Signal To Noise Ratio ◽  
Digital Data ◽  
Measuring System ◽  
Instrumentation Amplifier ◽  
Torque Sensor ◽  
Torque Measurement ◽  
Analog To Digital ◽  
Wireless Transceiver ◽  
Precision Measuring ◽  
Transmission Shaft

It’s very difficult to get high precision measuring result using contact torquemeter because of very low signal-to-noise ratio. To overcome this defect, a wireless torque measuring system is designed based on CC2500. This system uses strain gauge torque sensor to measure the surface principal stress of the transmission shaft, and get the maximum shearing stress, and then the torque that the transmission shaft bears. The weak output signal of torque sensor is magnified by the instrumentation amplifier AD623, and sent to the analog-to-digital convertor. These digital data are transmited to the portable receiving terminal by the wireless transceiver chip CC2500. The dynamic wireless torque measurement is realized by this system.

An Improved Residual Network for Electricity Power Meter Error Estimation

2019 ◽  
Vol 33 (08) ◽  
pp. 1959024
Author(s):  
Zichao Kou ◽  
Yanjun Fang
Keyword(s):  
Deep Learning ◽  
Error Estimation ◽  
Back Propagation ◽  
Electrical Energy ◽  
Residual Network ◽  
Propagation Process ◽  
Power Meter ◽  
Energy Metering ◽  
Electricity Power ◽  
Comparable Model

The lack of research on the metering characteristics of electricity power meters under complex conditions is a major obstacle to the on-site verification of electrical energy metering equipment. Establishing a predictive model for electricity power meter errors offers an effective way of dealing with this issue. Deep learning has been proven to have the capacity to reduce end-to-end dimensionality and improve recognition. Through the analysis of the back propagation process in residual networks, an improved residual network is set out in this paper. While preserving the advantages of residual network gradient propagation, it adds an adjustable shortcut and designs a convex [Formula: see text]-parameter strategy that can be improved according to different processing objects. Experimental results show that the predicted errors produced by the proposed technique are significantly lower than in a comparable model. At the same time, the improved residual network does not increase the network’s complexity.

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