一种基于FPGA的发电机变压器组实时故障录波系统的研究

Research on Generator-transformer Units Real-time Fault Recorder System Based on FPGA

基于嵌入式实时处理器和FPGA技术的全新架构发电机变压器组故障录波系统,通过基于FPGA的并行算法,提出了一种自适应移动窗的模拟量周期计算方法,可完成128路模拟量有效值、角度、频率、序分量及谐波等参数的实时精确计算,并充分利用嵌入式实时处理器性能,实现可靠快速的故障录波启动判据、保护录波动作判据及丰富友好的发电机变压器组状态监控和故障查询功能。该系统经检验满足相关国家标准,且通道参数具有千分之一精度,可捕捉雷击等极短暂过渡过程故障。

This paper introduces a new structure of fault wave recording system based on embedded real-time processor and Field-Programmable Gate Array（FPGA）.It proposes an adaptive moving window Analog-cycle calculating method based on FPGA parallel algorithm.It can realize real-time accurate parameter calculation of 128 analog RMS,angle,frequency,sequence component,harmonic wave and so on.Moreover,an improved frequency tracking algorithm is presented in the monitoring of the electric quantity to improve the detection precision and the processing speed.The system introduced in this paper has been tested by the Northeast Electric Power Research Institute.It meets relevant national standards and its channel parameters has one over one thousand accuracy.Moreover,it can catch any transient failures like lightning.