Distributed Energy Resources Electric Profile Identification in Low Voltage Networks Using Supervised Machine Learning Techniques

Abstract

Increasing integration of distributed energy resources (DER) in the electrical network has led distribution network operators to unprecedented challenges. This issue is compounded by the lack of monitoring infrastructure on the low voltage (LV) side of distribution networks at residential and utility sides. Non-intrusive load monitoring (NILM) methods provide an opportunity to add value to conventional electric measurements and to increase the observability of LV networks for the implementation of active management network techniques and intelligent control of DER. This work proposes a novel implementation of NILM methods for the identification of DER electrical signatures from aggregated measurements taken at the LV side of a distribution transformer. The implementation evaluates three machine learning algorithms such as k Nearest Neighbours (kNN), random forest and a multilayer perceptron under 100 scenarios of DER integration. A year of minutely reported values of electric current, voltage, active power, and reactive power are used to train and test the proposed model. The F 1 scores achieved of 73% and 93% for Electrical Vehicles (EV) and rooftop photovoltaic (PV) respectively and processing times below 314 µs on an Intel Core i7-8700 machine. These results confirm the relevance of the NILM method based on low frequency electric measurements from the real-time identification of DER.INDEX TERMS Distributed energy resources (DER), non-intrusive load monitoring (NILM), low voltage networks distribution networks (LVN), random forest, supervised machine learning.The associate editor coordinating the review of this manuscript and approving it for publication was Wentao Fan .

Performance Analysis of Machine Learning Algorithms for Estimation of EV Penetration

“…The framework also employs LSTM and convex learning layers to capture the probabilistic distribution of stochastic scenarios. A novel application of non-intrusive load monitoring (NILM) [21] to identify distributed energy resources (DERs), speci cally EVs and rooftop solar panels, in a lowvoltage (LV) distribution grid. The proposed NILM method utilizes three machine learning approaches: KNN, RF, and multilayer perceptron.…”

Elektrikli Ev Aletlerinde Müdahalesiz Yük İzleme, Sınıflandırma ve Kontrolünün Gerçekleştirilmesi

“…Bu sayede kurulum maliyetlerinin azaltılması hedeflenmektedir. Yapılan çalışmalar, enerji yönetimi ve gerçek zamanlı verilere dayalı olarak enerji tüketiminde önemli oranda tasarruf sağlanabileceğini ortaya koymuştur [3][4][5][6][7].…”