变电站合并单元测试设备校验系统及其实现

发布时间：2018-03-18 13:49

  本文选题：智能变电站　切入点：合并单元测试设备　出处：《电力系统自动化》2017年19期 　论文类型：期刊论文

【摘要】：针对变电站合并单元测试设备技术性能中"延时特性"和"准确度"两项关键的测试功能指标缺乏有效校验手段的问题,提出了一种针对变电站合并单元测试设备技术性能的校验方法,研制了相关校验系统,介绍了系统构成、技术指标。该校验系统基于高性能ARM处理器+现场可编程门阵列(FPGA)+高精度AD芯片的硬件系统,设计了电压、电流快速采样前置电路以减小采样延时误差,应用了定频采样高精度幅值和相位算法以实现对采样信号的高精度测量,设置了精确灵活的延时特性测试策略。随后,应用该校验系统开展了合并单元测试设备比对性测试,基本解决了变电站合并单元测试设备核心性能无法检测的实际问题。
[Abstract]:In order to solve the problem that the two key test function indexes of "delay characteristic" and "accuracy" in the technical performance of substation merging unit test equipment are short of effective verification means, This paper presents a calibration method for the technical performance of the test equipment for substation merging unit, develops a related calibration system, and introduces the structure of the system. Technical specifications. The calibration system is based on the hardware system of high precision AD chip with high performance ARM processor field programmable gate array (FPGA). The voltage and current sampling precircuits are designed to reduce the sampling delay error. The high precision amplitude and phase algorithm of constant frequency sampling is applied to realize the high precision measurement of the sampling signal, and the accurate and flexible delay characteristic test strategy is set up. Then, the combined unit test equipment is tested by the calibration system. It basically solves the practical problem that the core performance of substation merging unit test equipment can not be detected.
【作者单位】： 国网湖南省电力公司电力科学研究院;湖南省湘电试验研究院有限公司;
【基金】：国网湖南省电力公司科技项目(5216A5140026)的资助
【分类号】：TM63
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本文编号：1629846