【作者】 赵红强；

【导师】 徐建源；

【作者基本信息】 沈阳工业大学 ， 电机与电器， 2005， 硕士

【摘要】 本文首先介绍了自动重合器的工作原理,包括如何与自动重合器以及与分段器配合实现故障监测、故障定位和故障隔离,同时对自动重合器的结构和特性进行了描述,并由此得出了自动重合器控制器应具备的功能。 在本文的主体部分中,具体介绍了自动重合器控制器的硬件设计。根据功能,该部分可分为电源模块、永磁机构驱动模块、电容器充放电模块、模拟量输入模块、数字量输入输出模块、温度调节模块、通讯模块、面板模块、存储模块和主控制芯片模块等。本设计采用微控制器LPC2106为控制核心,以CPLD芯片XC95108连接各模块,通过芯片MAX125进行A/D转换。驱动模块采用中心对称的主回路结构,根据微控制器的指令驱动永磁机构进行合闸或分闸操作,驱动模块具备线圈短路保护和断路告警功能。控制器具备温度调节功能,以适应高温和严寒地区使用。控制器采用了RS485通讯方式,单/双工模式可以通过软件选择,微控制器的软件利用通讯方式可实现在线升级。为了在掉电时保持设备整定值或数据,采用了铁电存储器。本设计的硬件电路采用软件ORCAD进行了前期仿真,为设计提供指导。 为了提高控制器的可靠性,本文专门介绍了电磁兼容设计。在该部分不仅介绍了防治电磁干扰的措施,比如滤波、屏蔽等,还给出了部分电磁干扰的仿真模型。同时该部分介绍了电磁兼容实验的内容和方法。 采用实时操作系统有利于程序的编写和升级,故本文最后介绍如何将μC/OS-Ⅱ操作系统移植到LPC2106,并指出了注意事项。 本文的研究工作证明:所研制的配永磁机构自动重合器控制器硬件结构合理,可靠性高;μC/OS-Ⅱ实时操作系统有利于提高软件开发效率和可靠性。更多还原

【Abstract】 Firstly, the working principle of auto-recloser including how to realize fault monitoring, fault location and fault isolation with secter and auto-recloser is introduced. At the same time, the property and the structure of auto-recloser are described. From the above conclusion, it educes the functions that auto-recloser controller should have.Secondly, the hardware design of the recloser controller is introduced detailedly. According to the function, the controller can be divided into several modulars, such as power source, permanent magnetic actuator driver, charge and discharge, input of analog, input and output of digital, attemperation, communication, panel, memory and the microcotroller chip. This design makes microcontroller LPC2106 as central processor, and connects each modular with the CPLD chip of XC95108. It converts the analog signal into digital signal by the A/D chip of MAX 125. The permanent magnetic actuator driver modular adopts the structure of central symmetry and drives the actuator to close or open according to the instruction of microcontroller. The driver modular also has the function that avoids it to work when the coil is short circuit or break. The controller communicats with other controllers using the RS485 wires, and the software of the microcontroller can be online programmed by communication. This design has offered attemperation function to meet the usage of torrid and frigid zone. The Ferroelectric Nonvolatile RAM (FRAM) is used to hold the data and information of the controller when the power is cut. The hardware circuit of this design adopts software ORCAD to perform the emulatation of early stage.To raise the reliability of recloser controller, the Electromagnetic Compatibility (EMC) is also designed specially. This part not only introduces the technique that prevents the Electromagnetic Interference (EMI), such as filter and shield, but also gives several emulatation models of EMI. At the same time, the content and means of the EMC test is also introduced.The real time operation system is helpful for program and upgrade, so how to port μC/OS-Ⅱ operation system for LPC2106 is introduced and the notice items is pointed out.This research proves that: the hardware structure of the auto-recloser controller is reasonable and reliable; the real time operation system of μC/OS-Ⅱ is helpful to improve the software development efficiency and reliability.更多还原