From: A systematic review of real-time detection and classification of power quality disturbances
Set of techniques | Advantages | Disadvantages | Application | |||||
---|---|---|---|---|---|---|---|---|
Multiple PQDs | Sags | Notches | ||||||
Refs | % | Refs | % | Refs | % | |||
Handcrafted | Physical interpretation of contextual features Ease understanding | Time-consuming Detailed knowledge of features and phenomena is usually required | [33,34,35,36,37,38,39,40,41, 43,44,45,46,47,48,49,50,51,52,53,54, 56,57,58,59,60,61,62, 64, 66,67,68,69,70,71,72,73,74, 77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94, 96,97,98,99, 101, 102, 104, 106,107,108, 110, 112, 113, 115, 117, 118, 120, 122, 126, 128] | 77 | [132,133,134,135,136,137,138,139,140, 142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157, 160, 161, 163, 166, 169, 172,173,174, 176, 178, 181, 182, 185, 186] | 71 | [187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210] | 96 |
Optimization methods | Yield optimal sets of features Sound theoretical background Diverse methods | Not necessarily a physical interpretation of features High computational burden They rely on the proper a priori selection of relevant features | 7 | 5 | - | 0 | ||
Dimensionality reduction | Physical interpretation of indices Diverse methods and indices | May lead to some data loss Handcrafted rules are required in most cases | 9 | 7 | - | 0 |