title: A New Missing Data Imputation Algorithm Applied to Electrical Data Loggers.
abstract: Nowadays, data collection is a key process in the study of electrical power networks when searching for harmonics and a lack of balance among phases. In this context, the lack of data of any of the main electrical variables (phase-to-neutral voltage, phase-to-phase voltage, and current in each phase and power factor) adversely affects any time series study performed. When this occurs, a data imputation process must be accomplished in order to substitute the data that is missing for estimated values. This paper presents a novel missing data imputation method based on multivariate adaptive regression splines (MARS) and compares it with the well-known technique called multivariate imputation by chained equations (MICE). The results obtained demonstrate how the proposed method outperforms the MICE algorithm.
authors.affiliation: Maintenance Department, University of Oviedo, San Francisco 3, Oviedo 33007, Spain. ccrespo@uniovi.es.
authors.forename: Concepción
authors.initials: C
authors.lastname: Crespo Turrado
authors.affiliation: Department of Construction and Manufacturing Engineering, University of Oviedo, Campus de Viesques, Gijón 33204, Spain. sanchezfernando@uniovi.es.
authors.forename: Fernando
authors.initials: F
authors.lastname: Sánchez Lasheras
authors.affiliation: Departamento de Ingeniería Industrial, University of A Coruña, A Coruña 15405, Spain. jlcalvo@udc.es.
authors.forename: José Luis
authors.initials: JL
authors.lastname: Calvo-Rollé
authors.affiliation: Departamento de Ingeniería Industrial, University of A Coruña, A Coruña 15405, Spain. andres.pinon@udc.es.
authors.forename: Andrés José
authors.initials: AJ
authors.lastname: Piñón-Pazos
authors.affiliation: Prospecting and Exploitation of Mines Department, University of Oviedo, Oviedo 33004, Spain. fjcos@uniovi.es.
authors.forename: Francisco Javier
authors.initials: FJ
authors.lastname: de Cos Juez
keywords: Multivariate adaptive regression splines (MARS); current; missing data imputation; multivariate imputation by chained equations (MICE); power factor; quality of electric supply; voltage