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基于PLC控制的蜂场风光互补发电控制系统的设计

Design of the Control System of the Bee Farm Wind-solar Complementary Power Generation Based on PLC Control

【作者】 王立峰

【导师】 崔天时; 钟兆欣;

【作者基本信息】 东北农业大学 , 工程硕士(专业学位), 2018, 硕士

【摘要】 在移动蜂场中,由于环境场所的限制,蜂场的照明、生产等用电很难得到市电的供给。目前对于大多数的蜂场进行调查发现,蜂场多采用太阳能电池作为发电元件为用电负载进行供电。光伏发电系统的光电转化效率和光照强度有很大关系,通常情况下光照越强,光电转化效率越高。但是如果单独使用太阳能电池进行供电,当遇上阴雨天没有太阳能资源时,就不能够对蓄电池进行充电,从而不能实现对系统供电的要求。刮风下雨天气目前蜂场的发电现状不能够满足人们的日常用电。无论是单独的风电系统还是单独的太阳能发电系统,都受到自然条件的制约,由于这些不利因素的存在,限制了对太阳能和风能的利用。但是,如果能够合理地利用,把两者的长处加以结合,发挥各自的特点,就能很好地解决能源的随机性和不稳定性等问题。目前各国的学者和专家对风能和太阳能的利用做了更深入的研究,并且取得了一定的研究成果,尤其是将风能和太阳能进行综合利用,结合自身的优点和不足建立了更加合理的能源系统。于是我们提出了基于蜂场的风光互补发电的控制系统。本论文的主要研究内容如下:1、对该设计整体的工作原理作了简单的介绍,并对各部分作了细致的说明,选取了适合本设计的控制策略,使系统运行在最好的工作模式。2、通过资料采集确定蜂场的用电负荷,以蜂场为例分析其风资源和光照资源,计算风电机组、电池板、逆变装置、储能装置的容量,并进行容量匹配计算以及对系统搭建仿真,使该设计具有更符合实际的应用意义。3、结合电力电子技术和电子技术,进行了系统的硬件控制系统的设计,包括西门子PLC的设计,并且具备很好的运行效果。4、结合PLC编程技术以及STEP7-Mirco/WIN V4.0,进行了系统的软件控制系统的设计,并确定了软件流程图。5、通过实验,分别对风力发电系统的发电状况、光伏发电的发电状况以及蓄电池的三段式充电进行了实际探究,证明其可行性。

【Abstract】 In the mobile bee field,due to the restriction of the environment,it is difficult to obtain the supply of electricity for the lighting and production of the bee field.At present,most of the bee field surveys have found that the honeybee field uses solar cells as the power element to power the load.The photoelectric conversion efficiency of photovoltaic power generation system has a great relationship with the illumination intensity,and the higher the light intensity is,the higher the photoelectric conversion efficiency is.But if use alone solar battery power supply,when there is no solar energy resources in rainy day,is not able to battery recharged,which can’t reach the request of power supply to the system.The current situation of electricity generation in the bee field is not enough to meet people’s daily electricity consumption.Whether it is a single wind system or a single solar system,it is constrained by natural conditions that limit the use of solar and wind power.However,if it can be used reasonably,combining the advantages of the two and giving full play to their respective characteristics,it can solve the problems of energy randomness and instability.As international scholars and experts to the use of wind and solar power made a more in-depth research,and achieved some results,especially the comprehensive utilization of wind energy and solar energy,combined with their own advantages and disadvantages more reasonable energy system is established.So we put forward a control system based on bee field.The main research contents of this paper are as follows:1.This paper introduces the working principle of the whole design,and makes a detailed description of each part,selects the control strategy suitable for this design,and makes the system run in the best working mode.2.Through data collection to determine the apiary electricity load,somewhere in bee field as an example to analyze its wind and light resources,calculation of wind machine,panels,inverter device,the capacity of energy storage device,and the capacity matching calculation and to establish the simulation of the system,make the design more accord with the actual application significance.3.Combined with power electronics technology and electronic technology,the design of the hardware control system of the system,including the design of Siemens PLC,has a good operation effect.4.Combined with PLC programming technology and STEP7 Mirco/WIN-V4.0,the software control system was designed and the software flow chart was determined.5.Through the experiment,the actual research on the power generation condition of the wind power system,the power generation condition of photovoltaic power generation and the three-phase charging of the battery are carried out,and the feasibility is proved.

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