刘灏;杨智伟;毕天姝;杨奇逊;

• 1:新能源电力系统国家重点实验室(华北电力大学)

摘要(Abstract)：

新能源集中并网与直流输电技术的快速发展,使电力系统机理特性与运行控制方式均发生变化,亟需闭环精细化控制。同步相量测量单元(phasor measurement units,PMUs)因其测量的同步性与快速性,使电力系统动态实时监测成为可能,可为系统保护与闭环控制提供数据基础。然而,由于现场环境复杂,同步信号丢失、通信协议错误、系统过载等诸多因素会导致PMU存在数据丢失等问题,严重影响其在监测控制、事故分析等方面的应用。归纳了PMU数据丢失的不同场景,定义了两种数据丢失的基本类型;提出了基于插值区间动态变化的优先级分配策略,采用改进三次样条插值函数,对不同类型的丢失数据进行恢复,解决了传统方法在连续多点数据丢失类型下的失真问题。通过仿真与实际录波数据验证了该方法的可行性和准确性,对于保证PMU数据质量有着重大意义和较大价值。

关键词(KeyWords)： 同步相量测量单元;数据丢失;数据恢复;优先级分配策略;改进三次样条插值函数

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目(2017YFB0902900);; 国家自然科学基金项目(51627811,51707064,51725702)~~

作者(Author): 刘灏;杨智伟;毕天姝;杨奇逊;

Email:

DOI: 10.13335/j.1000-3673.pst.2018.0379

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