Development of a new multi-function power management DCS system

Abstract

This paper introduces a two-layer network intelligent power management DCS system for dormitory . The gateway adopts the microprocessor LM3S8962 based on ARM Cortex - M3, and it is very easy to complete the Ethernet and RS485 bus transparent interconnection. The gateway software design is built upon to μC / OS - II embedded real-time operating system platform. In order to improve the real-time measurement accuracy of multi-user electric parameters , the underlying power control cabinet uses TMS320F2812 DSP for data sampling and data processing. Because frequency of power network drifts, the system applies the phase-locked technology to produce synchronized multiple frequency pulse with respect to the AC power. So integer-period sampling is totally realized. The system utilizes wavelet neural network technology to solve the complex problem of load identification ,and greatly reduces the risk of dormitory fire and releases the management staff from mannual management. Based on the long-term practical operation, it shows that the system measurement control is accurate, reliable and easy to use. © 2011 Published by Elsevier Ltd.