Design of singlephase electronic antisteal Watthour meter based on RN8209

LIANG Fangying1, HE Riyang2, CHEN Miaofang3
(1. Department of Electrical Engineering, Zhejiang Institute of Mechanical & Electrical Engineering, Hangzhou
310053, China; 2. Wellsun Electric Meter Co.,Ltd., Hangzhou 310007, China;
3. Department of Electrical Engineering, Zhejiang Industry Polytechnic College, Shaoxing 312000, China)

Abstract: In view of current rampant situation of stealing electricity as well as deficiency of existing methods against the theft, a new design of Watthour meter of electricitytheftproof function with RN8209 as its core was promoted. By this Watthour meter, the phase line, the zero electric current and network voltage can be sampled and computed, the realtime performance of data collecting and processing was achieved. Being a realtime monitor of users power consumption, the monolithic integrated circuit of this table was able to accurately discriminate every way of stealing electricity according to the power value of the phase line and the zero curves. The study result shows that this Watthour meter can accurately detect the electricity thefts with characteristic of high precision, stability, reliability, and etc..
Key words: Watthour meter; RN8209; electricity theft protection