高速数字设计技术在微机保护设备中的应用研究

【作者】 吴乾龙；

【导师】 徐习东；

【作者基本信息】 浙江大学 ， 电气工程， 2007， 硕士

【摘要】 电力系统的高速发展对继电保护不断提出新的要求，而电子技术、计算机技术与通信技术的飞速发展又为继电保护技术的发展注入了新的活力，微机保护作为一种新型的继电保护方式，正逐渐从单片机时代向嵌入式时代跨进。嵌入式系统在微机保护设备中的应用，使得继电保护日新月异，网络化、智能化以及保护、控制、测量、数据通信一体化得以实现。嵌入式技术的应用，给继电保护带来了活力，同时，也给微机保护设备的硬件设计带来了挑战，传统的低速数字设计(工作频率低于50MHz的数字设计)方法在高速数字设计(高于50MHz)领域已经不再适用，甚至不能实现，而高速数字设计技术为高速嵌入式系统的硬件设计提供了支持。高速数字设计技术，其核心的思想就是采用模拟设计的手段来解决数字电路设计中的信号完整性问题及电磁兼容问题。本文广泛收集、整理、分析了当前微机保护的现状，对微机保护设备的原理及构成作了剖析，并对嵌入式技术本身及其在微机保护设备硬件设计中的应用做了阐述，提出微机保护设备硬件设计存在的问题和将面临的问题。同时，本文收集并分析了目前高速数字设计领域的研究成果，对高速数字设计中面临的三大问题：时序问题、信号完整性问题以及电磁兼容问题作了深入的分析，信号完整性仿真与分析技术是高速数字设计的最有效方法，对于高速数字设计中的时序问题以及电磁兼容问题，本文提出一些有效的、针对性的解决方法。将高速数字设计技术应用于微机保护设备的嵌入式系统设计是本文的目的，也正是本文主要论述的内容，本文将结合应用实例作进一步的论证。更多还原

【Abstract】 The rapid development of power system raises new demands to relay protection. And the fast development of electronic technology, computer technology and communication technology injects new vitality to the development of relay protection technology. As a new way of relay protection, computer protection now strides from SCM era to embedded era. The application of embedded system in the computer protection equipment makes great changes to relay protection. It makes network, intelligence, the integration of protection, control, measurement and data communications come true.The application of embedded technology brings vitality to relay protection. It also brings new challenges to the hardware design of computer protection equipment. The method of traditional low-speed digital design (below 50MHz frequency digital design) is no longer applicable in the field of high-speed digital design (above 50MHz), which even cannot be realized. While high-speed digital design techniques provide support for high-speed embedded systems hardware design. The core of high-speed digital design techniques is to solve the signal integrity problems and electromagnetic compatibility problems in the digital circuit design by means of analog design.This paper collects, collates and analyzes the current status of computer protection. It analyzes the principle and components of computer protection equipment. Furthermore, it expounds embedded technology and its application in the hardware design of computer protection equipment. It points out the existing problems and future problems of the hardware design of computer protection equipment. This paper also collects and analyzes the research results of current high-speed digital design. It makes a thorough analysis on the three problems of high-speed digital design: timing, signal integrity and electromagnetic compatibility. Signal integrity simulation and analysis technology is the most effective way for the high-speed digital design. Concerning timing problems and electromagnetic compatibility problems, this paper proposes some effective solutions. The purpose of this paper is to apply high-speed digital design techniques to the embedded system design of computer protection equipment. This paper will combine examples for further proof.更多还原