基于LabVIEW的多能源智能微网协调控制监控平台的研究与设计

发布时间：2018-04-17 01:20

本文选题：微网协调控制 + 监控　；参考：《电子科技大学》2014年硕士论文

【摘要】：在智能电网中,应当重点关注的部分是微网。对微电网进行开发可以推进分布式电源的有效利用,并且将微电网进行延伸,可以和更多可再生清洁能源进行大规模的衔接。该平台在配电过程中和传统的电网不同,它具有主动配电形式,这是将传统电网很好过渡为新型智能电网的新形式。本文将设计一种适合本平台的协调控制策略,并实现微网监控平台的软件设计。根据风力发电系统、光伏发电系统、储能系统的各模块所存在的约束条件,设计出能够维持一级负载正常运行,且保护蓄电池不过充过放的控制策略。该监控平台主要实现上下位机数据和控制信号通信功能、数据分析功能,并设计出友好的人机交互界面。为了利于实验人员对历史数据进行查阅并进行故障检修,本平台还设计了利用数据库进行数据存储和查询功能。具体内容如下:(1)研究与设计了基于蓄电池荷电状态协调控制策略。针对多能源的各自发电形式、发电能力、发电时机进行研究,讨论风力机和光伏发电的功率与负载功率之间能量分配问题,根据各类问题进行分类总结,设计了“基于蓄电池荷电状态协调控制策略”,并用仿真实验验证该控制策略是否能达到协调平台发电功率和负载用电功率动态平衡的目的。(2)在上位机模拟风机发电特性曲线。通过对直流电机模拟风机发电的机理学习,搭建风力机发电的功率-风速等曲线图,在特定的风速情况下,计算出模拟转速与转矩,将模拟转速与转矩传输给下位机,下位机再传输到硬件设备进行模拟。(3)制定适合本平台上下位机的通信规约。针对该平台是在LabVIEW上进行监控,制定适合本平台上下位机的通信规约,根据通信规约设计一个数据分析模块,该模块负责对数据进行分析并提取需要控制的信息,将下一步的控制命令通过上位机发送给下位机。(4)搭建上位机和数据库衔接模块。为了利于长期的控制和检测,上位机和数据库连接,将上位机上的重要数据存储在数据库内,便于查看研究或者出现故障之时进行数据查询和分析。本论文的工作内容依托于973项目,为该项目的推进提供了实验室研究平台,对保证973平台顺利推进具有重要意义。
[Abstract]:In the smart grid, the focus should be on the microgrid.The development of microgrid can promote the effective use of distributed generation and extend the microgrid, which can be connected with more renewable clean energy on a large scale.The platform is different from the traditional power grid in the process of distribution, it has the form of active distribution, which is a new form of transition from the traditional power grid to the new smart grid.In this paper, a coordinated control strategy suitable for this platform is designed, and the software design of microgrid monitoring platform is realized.According to the constraints of the modules of wind power system, photovoltaic system and energy storage system, a control strategy which can maintain the normal operation of the primary load and protect the battery from overloading is designed.The monitoring platform mainly realizes the communication function of data and control signal and the data analysis function of the upper and lower computer, and designs a friendly man-machine interface.In order to facilitate the experimenter to consult the historical data and troubleshoot, the platform also designed the database for data storage and query functions.The main contents are as follows: 1) the coordinated control strategy based on the charge state of battery is studied and designed.In this paper, the energy distribution between power and load of wind turbine and photovoltaic power generation is discussed and summarized according to various kinds of problems, based on the research of their own generation forms, generation capacity, generation timing, and energy distribution between wind turbine and photovoltaic power generation.This paper designs a coordinated control strategy based on the charging state of the battery, and verifies whether the control strategy can achieve the purpose of coordinating the dynamic balance of generating power and load power on the upper computer to simulate the generation characteristic curve of the fan.By studying the mechanism of DC motor simulating fan power generation, the graph of power and wind speed of wind turbine is built. Under the specific wind speed, the simulated rotational speed and torque are calculated, and the simulated speed and torque are transmitted to the lower machine.The communication protocol suitable for the upper and lower computer of this platform is established.In view of the monitoring of the platform on LabVIEW, the communication protocol suitable for the upper and lower computers of the platform is established. According to the communication protocol, a data analysis module is designed, which is responsible for analyzing the data and extracting the information to be controlled.The next control command is sent to the lower computer through the upper computer.In order to facilitate long-term control and detection, the host computer and the database connection, the host computer important data stored in the database, easy to view research or when the failure of data query and analysis.The work of this paper is based on 973 projects, which provides a laboratory research platform for the project, which is of great significance to ensure the smooth progress of 973 platform.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM76

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