基于LSSVM的含光伏微电网功率自适应控制方法  

Power Adaptive Control Method for Photovoltaic Microgrid Based on LSSVM

作　　者：黄久岭 HUANG Jiuling(WSGRI Engineering&Surveying Incorporation Limited,Wuhan 430080,China)

机构地区：[1]中冶武勘工程技术有限公司,湖北武汉430080

出　　处：《通信电源技术》2023年第24期54-56,116,共4页Telecom Power Technology

摘　　要：常规的微电网功率控制方法以暂态调控为主,功率失衡问题较为严重,影响微电网的负荷冲击响应能力。因此,设计基于最小二乘支持向量机(Least Squares Support Vector Machine,LSSVM)的含光伏微电网功率自适应控制方法。提取含光伏微电网功率自适应分区域特征,考虑到微电网工作节点与最大功率节点之间的距离,划分最大功率节点的工作区域,自适应控制该区域的功率。基于LSSVM构建微电网功率自适应控制模型,调节微电网调频系数,在微电网运行故障状态下能够快速恢复至额定功率,最大限度地确保微电网的安全运行。通过均衡光伏微电网母线电压与功率,调节微电网直流母线电压,以双向功率流维持微电网的功率均衡,使微电网功率处于安全范围内。结合仿真实验,验证了该控制方法的控制效果更佳,能够应用于实际生活。The conventional power control method of microgrid is mainly transient regulation,and the power imbalance problem is serious,which affects the load shock response ability of microgrid.Therefore,an adaptive power control method for photovoltaic microgrid based on Least Squares Support Vector Machine(LSSVM)is designed.The self-adaptive power zoning characteristics of microgrid with photovoltaic are extracted,considering the distance between the working node of microgrid and the maximum power,the working area of the maximum power node is divided and the power of this area is adaptively controlled.Based on LSSVM,an adaptive power control model of microgrid is constructed,and the frequency modulation coefficient of microgrid is adjusted,so that it can quickly recover to the rated power in the failure state of microgrid operation and ensure the safe operation of microgrid to the maximum extent.By balancing the bus voltage and power of photovoltaic microgrid,the DC bus voltage of microgrid is adjusted,and the power balance of microgrid is maintained by bidirectional power flow,so that the power of microgrid is in a safe range.Combined with the simulation experiment,it is verified that the control effect of this control method is better and can be applied to real life.

关 键 词：最小二乘支持向量机(LSSVM) 光伏微电网 功率均衡 自适应控制 

分 类 号：TM615[电气工程—电力系统及自动化]