光伏追踪的MODBUS局域网广播式控制系统  

MODBUS LAN broadcast control system for photovoltaic tracking

作　　者：余大庆 张慧君 代朝晖 张钰鑫 涂友超 YU Daqing;ZHANG Huijun;DAI Zhaohui;ZHANG Yuxin;TU Youchao(College of Physics and Electronic Engineering,Xinyang Normal University,Xinyang 464000,China)

机构地区：[1]信阳师范大学物理电子工程学院,河南信阳464000

出　　处：《信阳师范大学学报(自然科学版)》2025年第2期174-182,共9页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：河南省基础与前沿技术研究计划项目(142300410446)。

摘　　要：提出一种光伏追踪的MODBUS局域网广播式控制系统,系统采用西门子1200系列PLC作为MODBUS局域网追踪系统的主站,主站对太阳高度角的追踪是一个实时连续的过程,主站判断光照强度满足发电条件与否。若满足发电条件,则主站广播式发出控制指令,指示从站控制器驱动光伏板运行到最强光照角度位置;若主站判定为不满足发电条件,则主站不向从站发送控制指令,从站光伏板保持不动。西门子1200系列PLC主站控制器单一完成太阳高度角的测算、追踪,不负责驱动光伏板,基本属于零负载运行。该系统降低了光伏板的追踪成本,提高了追踪精度,消除了从站光伏板不满足发电条件的太阳追踪能耗。A photovoltaic tracking MODBUS LAN broadcast control system was proposed,and Siemens 1200 series PLC was used as the host of MODBUS LAN tracking system.The tracking of the solar altitude angle by the master station was a real-time continuous process,and the master station judged whether the light intensity meted the conditions for power generation or not.If the conditions for power generation were met,the master station broadcasted a control command to instruct the slave station to drive the PV panels to the position of the strongest light angle;If power generation conditions were not met,then the master station did not send control commands to the slave station,and the slave PV panels remained motionless.The Siemens 1200 series PLC master controller completed the measurement and tracking of the solar altitude angle,and was not responsible for driving the PV panel,which basically belongs to zero-load operation.This system reduced the tracking cost of PV panels,improved the tracking accuracy,and eliminated the solar tracking energy consumption of slave PV panels that do not meet the power generation conditions.

关 键 词：光伏追踪 局域网 MODBUS广播式 时控方式 太阳高度角 

分 类 号：TM615[电气工程—电力系统及自动化] TP309[自动化与计算机技术—计算机系统结构] TP393.1[自动化与计算机技术—计算机科学与技术]