基于GPRS的无功补偿控制系统研究

发布时间：2018-04-06 07:07

本文选题：GPRS　切入点：无功补偿　出处：《广西大学》2015年硕士论文

【摘要】：无功补偿控制系统的作用是在电网出现异常时控制终端投切电容器以提高电网的功率因数,对电网进行无功功率的补偿和优化。城乡各地电网布局比较广,一些偏远地方交通不方便,设备出问题很难及时处理,针对这种情况本文设计了一种基于GPRS的无功补偿智能控制系统。该系统包括有硬件子系统和软件子系统两部分组成。本论文首先分析传统的无功补偿原理,设计基于ARM的嵌入式无功补偿系统总体方案,以LPC2292芯片为控制核心,以SIM900A模块做为GPRS通信终端,配以数据采集模块、抄电能表模块和无功补偿模块等为一体无功补偿系统。其次设计了系统的硬件电路,整合各个模块之间的最优搭配方案。采用反激式开关电源,使系统电源在一定范围内实现无级调节,采用AD7E55集成电能测量电路,测量电能稳定准,对模拟信号采集电路和微功率无线通信接口电路等进行优化选择设计,使系统运行更加可靠稳定。接着介绍了无功补偿系统的控制算法并进行软件设计,系统采用Linux操作系统,系统为模块式任务设计,包含有数据采集和处理任务、通信终端任务和级联处理任务等,在无功补偿任务模块对无功补偿电容量进行计算和分析,计算最优补偿策略和分析控制方法。最后对系统进行GPRS通信调试,进行软件测试,达到了预期的效果。本设计有利于电网配电的安全运行,同时有一定的经济效益,对提高供电质量和实时监控起到了积极的作用。
[Abstract]:The function of the reactive power compensation control system is to control the terminal switching capacitors to improve the power factor and to compensate and optimize the reactive power when the power network is abnormal.The distribution of power grids in urban and rural areas is relatively wide, some remote areas are not convenient for transportation, and it is difficult to deal with the problems in time. In view of this situation, a reactive power compensation intelligent control system based on GPRS is designed in this paper.The system consists of hardware subsystem and software subsystem.This paper first analyzes the traditional reactive power compensation principle, designs the overall scheme of the embedded reactive power compensation system based on ARM, takes the LPC2292 chip as the control core, the SIM900A module as the GPRS communication terminal, and the data acquisition module.Watt-hour meter reading module and reactive power compensation module are integrated reactive power compensation system.Secondly, the hardware circuit of the system is designed to integrate the optimal matching scheme between the various modules.The flyback switching power supply is adopted to realize stepless regulation of the system power supply within a certain range, and the AD7E55 integrated power measurement circuit is adopted to measure the power energy stably and accurately.The analog signal acquisition circuit and micro-power wireless communication interface circuit are optimized and designed to make the system more reliable and stable.Then the control algorithm and software design of reactive power compensation system are introduced. The system adopts Linux operating system, and the system is modular task design, including data acquisition and processing task, communication terminal task and cascade processing task, etc.In the reactive power compensation task module, the reactive power compensation capacity is calculated and analyzed, the optimal compensation strategy and the analytical control method are calculated.Finally, the GPRS communication debugging and software testing are carried out, and the expected results are achieved.The design is beneficial to the safe operation of power distribution system and has certain economic benefits. It plays an active role in improving the quality of power supply and real-time monitoring.
【学位授予单位】：广西大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN929.532;TM714.3

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