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1、一种低压电力线载波通信路由方法*朱俊超1,彭显刚1,杨永2,李壮茂1,郑凯1(1.广东工业大学自动化学院,广州510006;2.广东电网有限责任公司茂名供电局,广东茂名525000;)摘要:低压电力线载波通信信道常常表现出噪声干扰强、信号衰减大、时变性强,直接影响电力线载波通信的范围,降低电力线载波通信的可靠性。文中通过分析低压电力线网络拓扑结构,提出了一种基于Q学习和改进蚁群系统融合的电力线载波通信路由方法。首先采用Q学习算法对电力线网络进行全局搜索得到各路径上信息素初始值;然后利用蚁群算法正反馈收敛机制以及改进后自适应调整搜索策略得到最优路由。将本文算法与两种蚂蚁系统算法
2、进行仿真对比,结果表明,该算法能更快地建立起网络中主节点到各从节点的路由,并能根据通信信道的变化动态的维护路由,具有很强的抗毁性和自愈性,提高了低压电力线载波通信的可靠性。关键词:电力线载波通信;Q学习;蚁群系统;可靠性中图分类号:TM93文献标识码:B文章编号:1001-1390(2018)00-0000-00AroutingmethodoflowvoltagepowerlinecarriercommunicationZhuJunchao1,Peng,PengXiangang1,Yang,YangYong2,Li,LiZhuangmao1,Zheng,ZhengKai1(1
3、.GuangdongUniversityofTechnology,GuangZhou,510006,China.2.Maoming2.MaomingPowerSupplyBureauofGuangdongPowerGridCorporation,Maoming,525000,GuangdongChina,China)Abstract:Low-voltagepowerlinecarriercommunicationchanneloftenshowshowsstrongnoiseinterference,signalattenuation,time-varyingstrong,w
4、hichdirectlyaffectaffectsthepowerlinecarriercommunicationrange,andreducereducesthereliabilityofpowerlinecarriercommunication.Inthispaper,apowerlinecarriercommunicationmethodbasedonQlearningandimprovedantcolonysystemfusionisproposedbyanalyzingthetopologyoflowvoltagepowerlinenetwork.Firstly,t
5、heQsearchalgorithmisusedtosearchthepowerlinenetworkgloballytoobtaintheinitialvalueofthepheromoneoneachpath.Then,theantcolonyalgorithmisusedtoobtaintheoptimalpathofthepositivefeedbackmechanismandtheimprovedadaptiveadjustmentsearchstrategy.Inthispaper,wecancomparethealgorithmwithtwoantsystema
6、lgorithms.Theresultsshowthattheproposedalgorithmcanquicklyandeffectivelyestablishtheroutingofthemasternodetoeachslavenodeinthenetworkandcanbebasedonchangesinthecommunicationchanneldynamicmaintenancerouting,andithasastrongresistancetodestructionandself-healing,andimprovethereliabilityoflow-v
7、oltagepowerlinecarriercommunication.Keywords:powerlinecarriercommunication,Q-learning,antcolonysystem,reliability0引言低压电力线网络具有分布广,易接入,后期维护量小等特点。利用其进行数据传输将极大的减少成本投入,方便用户的安装,因此具有广阔的应用前景。然而低压配电网中大量负载随机投入与撤出带来电力线输入阻抗变化不确定、噪声干扰大以及信号选择性衰减等缺点,常会使通信链路中断,导致电力线通信的范