微机型继电保护测试仪的设计

Design of the test instrument for microcomputer-based relay protection

介绍了一种微机型继电保护测试仪的设计与开发,该测试仪由PC机和继电保护测试仪两部分组成,PC机通过软件实施对测试仪的操作和控制,继电保护测试仪是该系统的核心部件,用于生成并放大波形,获取触点动作信号后传给计算机进行处理。软件基于W indows平台,采用面向对象的编程技术编制而成,具有界面友好、易于使用等优点,通过适当提高测试软件线程的优先级,采用高精度的时间控制函数,其精度能够满足测试要求。

The design and development of a test instrument for microcomputer-based relay protection are introduced. The instrument consists of one PC and one test device of relay protection. The PC manipulates and controls the test device by running aligned software. Core part of the system in the test device is used to generate, enlarge wave and transfer actuating signals to PC after receiving it. Based on Windows, the software of the instrument is programmed with object-oriented technique. It has friendly interface and is used easily. The precision can meet the demands of relay protection by properly increasing priority of the test thread and using high precision function of time control.