电力系统及其自动化学报2017，Vol.29Issue(2)：84-88,5.DOI:10.3969/j.issn.1003-8930.2017.02.014
用于非侵入式电力负荷监测的改进Viterbi算法
Modified Viterbi Algorithm for Nonintrusive Load Monitoring
陈鸿川 1刘博 1栾文鹏 2李秋硕3
作者信息
- 1. 天津大学电气与自动化工程学院,天津 300072
- 2. 中国电力科学研究院,北京 100192
- 3. 南方电网科学研究院,广州 510080
- 折叠
摘要
Abstract
By applying hidden Markov model(HMM)to the aggregate load and interior equipment,the nonintrusive load monitoring(NILM)problem can be described as the decoding of HMM and solved by Viterbi algorithm. However, in the case of a larger number of equipment or equipment states,Viterbi algorithm is not applicable to solving the NILM problem due to a long execution time. For this reason,Viterbi algorithm is modified. Since the equipment states remain the same between two consecutive load events,the number of state sequences that need to be traversed by Viterbi algo-rithm is reduced considering that the equipment states will not change until a load event occurs. Compared with the stan-dard Viterbi algorithm,the modified version can reduce the execution time and it is applicable to the case of a larger number of equipment or equipment states. Results of case studies show the effectiveness of the modified Viterbi algo-rithm.关键词
非侵入式电力负荷监测/隐马尔可夫模型/Viterbi算法/负荷事件Key words
nonintrusive load monitoring(NILM)/hidden Markov model(HMM)/Viterbi algorithm/load event分类
信息技术与安全科学引用本文复制引用
陈鸿川,刘博,栾文鹏,李秋硕..用于非侵入式电力负荷监测的改进Viterbi算法[J].电力系统及其自动化学报,2017,29(2):84-88,5.
