| 引用本文: | 陈 晟,黄 茜,张 宇.基于频率水印的智能电网实时数据认证方法[J].电力自动化设备,2014,34(7): |
| CHEN Sheng,HUANG Qian,ZHANG Yu.Data authentication based on frequency watermarking for smart grid[J].Electric Power Automation Equipment,2014,34(7): |
|
| 摘要: |
| 针对智能电网建设中通信网络数据安全问题，结合智能电网通信网络特点，提出一种将电网频率信息应用于实时交互数据认证的方法。针对电网实时频率检测网络进行频率水印建模，利用分数阶傅里叶变换在发送的数据中嵌入频率水印，根据嵌入的水印对接收的数据进行安全认证。分数阶傅里叶变换分散了嵌入信息在传统时频域的能量分布，安全性好。仿真与实验结果表明，基于分数阶傅里叶变换的频率水印嵌入算法具有较高的安全性，并对常规的噪声攻击、低通滤波攻击和下采样攻击具有抵抗能力。 |
| 关键词: 智能电网 频率 水印 认证 傅里叶变换 数据安全 |
| DOI： |
| 分类号: |
| 基金项目: |
|
| Data authentication based on frequency watermarking for smart grid |
|
CHEN Sheng1, HUANG Qian2, ZHANG Yu3
|
|
1.Jiangsu Electric Power Company，Nanjing 211102，China;2.Jiangsu Taizhou Electric Power Company，Taizhou 225300，China;3.College of Electrical Engineering，Zhejiang University，Hangzhou 310027，China
|
| Abstract: |
| According to the features of smart grid communication network，it is proposed to apply the grid frequency information in the authentication of real-time interactive data to enhance data security. The frequency watermarking of real-time grid frequency monitoring network is modeled and then embedded in the transmitting data by the fractional Fourier transform. The received data are authenticated according to the embedded frequency watermarking for secure data communication. Because the energy of embedded information is distributed in traditional time-frequency domain，the security is high. Simulations and experiments demonstrate that the watermarking embedding algorithm based on the fractional Fourier transform has higher security and resistibility to regular noise attack，low-pass filtering attack and down-sampling attack. |
| Key words: smart grid frequency watermarking authentication Fourier transforms security of data |
