用于行波保护测试的暂态信号发生器关键技术

Key techniques of transient signal generator for test of traveling wave protection

作为暂态行波保护测试仪的重要组成部分,暂态信号发生器可将故障数据不失真地转换成模拟电压小信号。在介绍了暂态信号发生器的技术要求和工作原理的基础上,对其若干关键技术问题进行了讨论与研究。针对故障数据的处理方法、高速高精度数模转换的实现方案以及多路模拟输出的同步性等问题进行了深入分析。通过试验验证了测试仪暂态信号发生器工作的可靠性和有效性。

As an important part of test platform of transient traveling wave protection,the transient signal generator can transform the fault data into small analog voltage signal without distortion.The technical requirements and working principles of the transient signal generator are introduced,based on which,some key techniques are discussed and studied.The processing method of the fault data,the implementation scheme of high-speed and high-precision DA（Digital to Analog）conversion and the synchronization of the multi-channel analog output are deeply analyzed.The reliability and validity of the transient signal generator are verified by experiments.