Matti Lehtonen

TL;DR: In this paper, a novel selectivity technique to identify the faulty feeder in unearthed medium voltage (MV) networks is introduced. The proposed technique is based on a simplified probabilistic method applied to transient features extracted from the residual currents only using the discrete wavelet transform (DWT).

TL;DR: A transactive-based energy management framework to operate multiple-microgrid (multiple-MG) distribution systems is proposed in this paper , where each MG takes into account stochastic programming and the conditional value-at-risk index to handle the uncertainty of its operational scheduling.

Abstract: By the end of 2013 at the latest almost all electric consumption will be measured hourly in Finland. Beyond billing facilitation and troubleshooting, AMR provided great deal of opportunity for energy efficiency analysis. This study evaluates efficiencies and saving potential factors of household electricity end-use consumption by analyzing data from AMR meters and questionnaire collected statistical data. The interdependency of household appliances in factoring the gross household CO2 emission will be given much attention to achieve holistic approach. The study analyzes the extent of utilization of AMR in improving efficiencies of household consumptions.

TL;DR: In this paper, a review of arc-flash protection of air insulated switchgear is provided, covering the whole range starting from switchgear design aspects until ultra-fast arc elimination, with special attention paid to proactive technologies enabling preemptive detection of slowly developing faults.

TL;DR: A two-layer optimization model is introduced, where in the outer layer, an iterative algorithm is applied to determine the optimal set of long-term projects including Distributed Generations (DGs) installation and results show the strong influence of incentive regulation on reliability indices.