Summary
With the growing electricity power system and the increasing level voltage
operation, the traditional power detection system exposes more and more
shortcomings, it is difficult to meet the modern grid automation, digitization
development needs. This article first systematic exposition of the
instantaneous reactive power theory calculation method in which the
instantaneous active and reactive power, the instantaneous active current and
reactive current and instantaneous reactive power theory and the traditional
theory of comparative power of three parts; followed by an overview of the
Hall sensor works and technical specifications of the work; Finally, a brief
introduction of this design of the hardware system design, which includes a
control circuit, chip microcomputer AT89C51 choice, ADC0809 analog-digital
conversion part, stand-key keyboard input section, LED static display some
aspects of the design. Since I could not very well limited ability to complete
the software part of the design and simulation, which became this design a
lot of regret.
Keywords Instantaneous reactive power theory Hall sensor AT89C51
ADC0809
