SJ-300系列微机故障录波测距装置

THE SJ-300 SERIES MICROCOMPUTER-BASED DISTURBANCE RECORDING & FAULT LOCATING DEVICES

本文简要介绍了SJ-300系列微机故障录波测距装置的基本功能、技术特点、硬件配置和程序设计、该装置采用了微型计算机、高速模数转换和大容量数据存贮的技术,使装置具有较高的技术指标,包括:能记录故障发生前数周波至故障后4s内的数据;设区内/区外故障冗余缓冲区,最多可存贮三次故障波形和数据;开关量事件的顺序记录;实现波形数据的在线打印;对故障线路分析故障性质和测距以及与其它微机系统进行通信交换信息等功能,具有较高的性能价格比,是老式的机械—光学式故障录波器的理想更新换代产品。该产品已用于东北辽阳500kV变电所,并拟推广应用于葛洲坝水电厂等单位。

This paper briefly introduces the main functions, technical characteristics, hardware configuration and software design of the SJ-300 Series Microcomputer-Based Disturbance Recording and Fault Locating Devices. The device mainly consists of a microcomputer board, a number of highspeed A / D conversion modules and data memory blocks. Technical functions are as follows: ·ata logging from 40 msec before to 4 sec after the event occurrence. ·Disturbance recording for up to three loggings. ·Redundant buffers for memorizing input signals within and without the monitoring area. ·Sequential digital event logging. ·On—line printing of disturbance waveforms and data. ·Fault characteristic analyzing and fault locating. ·Comunicating with other intelligent terminals and computers. The device has been working at a 500kV Substation, Liaoyang, Liaoning province and will to be used by Gezhouba Hydrostation and some other sites.