Design And Research Of Distributed Tidal Current Energy Generation Monitoring System

With the large-scale use of fossil fuels,the global energy problems and environmental problems are increasingly prominent.The development of renewable new energy has gradually become the need for sustainable development strategies in various countries.The use of wind energy,hydropower,and solar power for renewable energy development is rapidly developing and the technology is mature.More than 70% of the world’s land surface is covered by oceans,and the oceans store a large amount of renewable new energy.Many countries in the world hope to use marine energy to provide increasing energy demand in a sustainable manner.The global total tidal current energy has great potential for application and exhibits high energy density and high predictability.This paper proposes a system bus design scheme for multi-machine array distributed tidal current energy generation monitoring system,and designs a control system for the 1KW anchored tidal current energy generation device,which realizes the remote monitoring,control and data acquisition functions of the power generation device.This paper provides theoretical guidance for fieldbus technology in distributed tidal current energy generation monitoring aspects,and provides a reference for the practical application of CAN bus in the field of tidal current energy monitoring.This article first analyzes the research status of tidal current generators monitoring systems at home and abroad,and summarizes the tidal current energy harvesting devices and power transmission systems.Second,by comparing the technical characteristics of common fieldbuses,it is determined that the CAN bus with many advantages can be used as the system bus of distributed tidal current energy generation monitoring system.On the basis of analyzing the working status and control function requirements of the anchor type tidal current energy generation device,the control system of the power generation device was designed,and the PID attitude control algorithm of the anchored power generation device was theoretically studied.The hardware and software design of the STM32 host controller in the control system of the anchored power generation device was performed,and the sensors in the system were selected and tested.The STM32 host controller hardware circuit is based on the STM32F103RCT6 microcontroller.It is responsible for collecting signals from various sensors,controlling other unit devices,and communicating with the external system bus.The STM32 function library was used in the KEIL integrated development environment to modularize the software design,and defines the serial communication protocol and CAN communication protocol.Using LabVIEW to design the host computer monitoring interface of serial communication,to realize the human-computer interaction of the monitoring system.In addition,in order to meet the needs of offshore experiments,a remote electrical control system was designed to achieve remote control of electrical equipment in power generation installations.Finally,the entire monitoring system was systematically debugged,and an offshore test study was conducted on the 1kW anchored tidal current power generation device monitoring to optimize the performance of the entire power generation system.The distributed power flow generation monitoring system designed in this paper realizes effective monitoring and control of the 1kW anchored tidal power generation device.Underflow attitude of the power generating device is better.The generator set can normally operate within one and a half hours before and after the high/low tide point.The total power generation of a single anchored power generation device during the day is 1.26 kWh.