The FPGA-Based Customizable Precision Real-Time Time-Frequency Correlation Analyse Algorithm for Transient-Signal Analysis

Wei LIN

doi:10.12096/j.2096-4528.pgt.18259

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The FPGA-Based Customizable Precision Real-Time Time-Frequency Correlation Analyse Algorithm for Transient-Signal Analysis

Energy Internet | 更新时间：2025-06-06

- The FPGA-Based Customizable Precision Real-Time Time-Frequency Correlation Analyse Algorithm for Transient-Signal Analysis
- Power Generation Technology Vol. 40, Issue 1, Pages: 1-10(2019)
- 作者机构：
  
  自由职业者, 山东省济南市 250100
- 作者简介：
- 基金信息：
- DOI：10.12096/j.2096-4528.pgt.18259
  CLC：
- Received：15 May 2018，
  
  Published：26 February 2019
- 稿件说明：
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Wei LIN. The FPGA-Based Customizable Precision Real-Time Time-Frequency Correlation Analyse Algorithm for Transient-Signal Analysis[J]. Power Generation Technology, 2019, 40(1): 1-10.
DOI：

Wei LIN. The FPGA-Based Customizable Precision Real-Time Time-Frequency Correlation Analyse Algorithm for Transient-Signal Analysis[J]. Power Generation Technology, 2019, 40(1): 1-10. DOI： 10.12096/j.2096-4528.pgt.18259.

摘要

针对电力系统故障信号中暂态分量的精细化实时分析需求，提出一种不同于Mallat算法频域分段方式的时频关联分析算法。这一算法可以实时运行，既对频带进行了精细化的、可灵活设置的、有重点的划分，又实现了全频带的高时域分辨率，同时保持了输出数据的时频关联特性。基于现场可编程门阵列（field-programmable gate array，FPGA）设计了一个实现这一算法的范例模块，基于MATLAB建立了一个简化的分布式参数电网模型。在这一模型上以生成500 kHz的故障信号采样值序列作为输入范例模块的数据流，对范例模块进行仿真，初步验证了该算法的性能、实用性。就该算法在继电保护算法设计中的应用策略提出了建议，对该算法涉及的其他后续工作进行了展望。

Abstract

Aiming to the precision and real-time analysis requirement of transient component in power system fault signal

a new time-frequency correlation analysis algorithm was presented

whose frequency domain segmentation is different from Mallat. This algorithm can run in real time

which makes precision

flexible and focused domain segmentation. At the same time

time-frequency correlation in the full frequency-range is maintained. An FPGA-based example module to implement this algorithm was designed. A MATLAB-based distributed parameter grid simple model was established. Simulation on this module provided 500 kHz-sampled-value sequence of fault signal. The capability and practicability was preliminarily proved by providing the sampled-value sequence to the example module. The application strategy for designing relay protection algorithm was suggested

and prospects of the work associated with this algorithm was provided.

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references

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