智能配电网监测系统的无损数据压缩方案  

Lossless Data Compression Scheme for Monitoring System of Smart Grid

作　　者：陈赟 王宇雷[2,3] CHEN Yun;WANG Yulei(China Gezhouba Group Electricity Power Co.,Ltd.,Wuhan,Hubei 430034,China;State Key Laboratory of Advanced Electromagnetic Engineering and Technology,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China;School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China)

机构地区：[1]中国葛洲坝集团电力有限责任公司,湖北武汉430034 [2]强电磁工程与新技术国家重点实验室(华中科技大学),湖北武汉430074 [3]华中科技大学电气与电子工程学院,湖北武汉430074

出　　处：《广东电力》2021年第5期90-98,共9页Guangdong Electric Power

摘　　要：为提高电力系统数据压缩方法的实时性和适应性,提出一种适用于智能配电网监测系统的无损数据压缩方案,该方案通过对当前监测数据的取值进行预测,计算实际值与预测值的残差,并对残差值进行改进的行程编码与霍夫曼编码,实现对智能配电网监测数据的无损压缩。预测方法采用基于2阶泰勒公式的预测法。通过对预测方法和压缩方案的分别仿真,证明所提预测方法和压缩方案各自的有效性。另外,所提的无损数据压缩方案无需添加时间窗,适用于对实时性要求较高的智能配电网监测系统。This paper proposes a lossless data compression scheme for the monitoring system of the smart grid which can calculate out the residuals of the actual value and the predicted value by predicting the value of current monitoring data,and then encode the residuals by improved run length encoding and Huffman encoding,thus realize lossless compression of the monitoring data of the smart grid.In the scheme,the prediction method is based on the 2 order Taylor formula.Through the simulation of the prediction method and the compression scheme respectively,the paper proves the validity of the proposed prediction method and the compression scheme.The proposed lossless data compression scheme does not need to add a time window,so it is suitable for the monitoring system of the smart grid with a high real-time requirement.

关 键 词：智能配电网 无损数据压缩 残差计算 预测方法 行程编码 

分 类 号：TM764[电气工程—电力系统及自动化]