配电网馈线自动化装置的研究

【作者】 汪治国；

【导师】 廖力清；

【作者基本信息】 中南大学 ， 控制理论与控制工程， 2005， 硕士

【摘要】 随着我国配电网自动化的不断发展,对配电网故障的智能处理提出了较高的要求,而对实时性要求更高。合理的网络结构、可靠的配电设备和配电自动化的实施是提高供电可靠性的主要措施。馈线自动化(FA)是配电自动化系统的一个重要环节,而FTU又是馈线自动化的关键设备,FTU的好坏直接影响到整个配电网自动化的实现。 论文首先阐述了配电网自动化的现状及馈线自动化的实现方式,比较分析了传统的两种馈线自动化实现方案的优点及不足,提出了基于FTU的就地控制与远方集中控制相结合的一种综合智能控制方案。然后具体研究了基于FTU的配电网故障区域定位的算法,提出了两种可行的算法:故障判断矩阵和遗传算法。该模式故障处理速度快,对系统和用户冲击小,不会造成非故障区段的停电。此外,该模式还减少了通信环节和对通信的依赖性,降低了系统对通信可靠性和实时性的要求。 论文结合电力系统中真空断路器永磁操动机构智能控制技术,对馈线自动化远方智能终端FTU给出了具体的设计方案。阐述了基于数字信号处理技术和数字信号芯片DSP的FTU的主要功能。选择TI公司的DSP芯片TMS320LF2407A为主控制器,设计了这款芯片的外围硬件接口电路,包括电源模块、模拟信号的采集,开关信号的输入输出回路、人机接口、通信模块以及永磁机构的驱动控制电路。软件方面对程序设计和电量参数的采样技术进行了研究。论文对控制器的可靠性和抗干扰性也进行了分析,提出了相应的解决措施和方法。 最后,论文讨论了配电网通信系统的通信方式和通信规约的选择,提出了一种基于Internet的通信方式。它与配电自动化功能相对独立,具有通用性和开放性,适合作为配电自动化的通用通信平台。 全文完成了FTU的主要硬件电路的设计、测试和相关软件程序和算法程序的编写、调试和仿真,实现了FTU的主要功能并在实验室调试仿真成功。实际运行结果表明能够实现本文提出的主要设计功能,技术上满足馈线自动化系统对控制器的技术要求,证实了基更多还原

【Abstract】 Along with the development of distribution automation system, more requests have arisen in dealing-with the fault of distribution automation system and real-time control. The reasonable network configuration, reliable power-facilities and distribution automation are key measures to improve the reliability of power supply. Feeder automation is an important part of DAS and Feeder Terminal Unit is the based key equipment. The performance of FTU determined the realization of DAS.At first, this paper expounds the actuality of DAS and the realization of FA, compares and analyses the advantage and shortage of the traditional FA realization, then gives a general intelligent realization mode of FA based on FTU. It concretely studies the algorithm of the fault area judgment on distribution network, and gives two feasible algorithms: novel fault judgment matrix and genetic algorithm. In this DA scheme, the fault is handled on the spot with high speed and the process does not affect the power supply to non-fault sections of feeder, which can simplify the requirement of communication.The thesis gives the concrete design of FTU. Based on digital signal processing and digital signal processor, the CPU of FTU is using digital signal processor-TMS320LF2407A of TI Corporation. The hardware interface circuit includes: power module > analog signals sampling module ^ switch signals input and output module > human and machine interface > communication module and the control of PMA. Program design and electric parameter sampling are studied in software aspect. It also has given the steps of resolution on reliability and anti-j amming of FTU.Lastly, the communication mode and the communication protocol of the communication system in DAS are discussed. A communication mode based on Internet is given. It is a general and open system which is independent of DA functions, so it can be used as the communication platform of DA.In this paper, it provides the main hardware design of FTU and thehardware circuits have been establishied, also the correlative programme and arithmetic have been debugging and emulated. All of FTU functions have been realized in the lab. The results show that the main functions proposed in the paper can been realized, and the technical requirements for the controller have been met. It also identifies the feasibility and practicability of the FTU design, which is based on DSP.更多还原