Design of a new three-phase dynamic harmonic electric energy meter

Author(s):  
Yu Xiao ◽  
Zhi Ye ◽  
Rui Huang ◽  
Yeqing Ma ◽  
Mouhai Liu ◽  
...  
2015 ◽  
Vol 719-720 ◽  
pp. 411-416
Author(s):  
Wei Wei Zhou ◽  
Ji Ye Huang ◽  
Ming Yu Gao ◽  
Zhi Wei He ◽  
Bu Sen Cai

In this paper, 0.05 grade three-phase main control system of multi-station meter testing equipment (MTE) is presented. This design is based on the S3C2440 core board as the control core, and the software is based on Windows CE(WINCE) embedded operating system. The device is displayed and controlled by 7-inch Touch Screen. The main control system communicate with the error instrument and PC through Controller Area Network (CAN) bus, and the largest number of error instruments can connect to CAN bus is 100. The main control system communicates through RS232 bus with three-phase signal source and standard electric energy meter, through RS485 bus with programmable power amplifier. In this device, calibration of energy meters can not only through the PC software, but also use the main control system. Compared to the traditional design of the electric energy meter calibration device, the design’s the man-machine interface is more optimized, the number of electric energy meters can be test in the same time is more, faster communication, stronger anti-interference ability, and calibration is more efficiency.


Author(s):  
Yongping Liu ◽  
Chuanliang He ◽  
Xin Xia ◽  
Yingjie Lv ◽  
Shouzhi Wang ◽  
...  

2013 ◽  
Vol 834-836 ◽  
pp. 1246-1250
Author(s):  
Hai Bo Yu ◽  
Jia Liu ◽  
Chun Yu Wang ◽  
Li Li ◽  
Rui Ming Tong

The verification of electronic type electric energy meter is under strict reference conditions, but some special operating conditions at locale will exceed the standard scopes. In order to improve the calculation accuracy and operating reliability of electric energy meter under operating conditions, it is necessary to study the operating conditions. According to the working principle and the standard verification regulation of electronic type electric energy meter, this paper summarizes these operating conditions: low power factor, harmonic waves, dynamic impulsive load, voltage fluctuation and outside magnetic field of power frequency, then analyzes the causes of operating conditions and their influence on electronic type electric energy meter, eventually lays foundation for thorough and systematic study of electric energy meter in the operating conditions, and establishes measurement center database of operating conditions.


2019 ◽  
Vol 118 ◽  
pp. 02008
Author(s):  
Lei Song ◽  
Yi-na Chen ◽  
Huan-jun Chen ◽  
Lei Wang ◽  
Yong-jin Xu ◽  
...  

This paper compares the differences between the International Recommendation46 (IR46 for short) and the current national standards for electric energy meter of the accuracy classes, testing requirements, software protection and so on. The national meter adaptability of IR46 is analyzed, and a technical proposal of dual-core smart meter is advanced. This proposal could match the testing and software protection requirements for IR46, and could implementation in China.


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