Electrical Energy Losses Determination In Low Voltage – A Case Study

Abstract

Along the last years, electrical energy distribution companies have already done many investments in order to identify and calculate energy losses along a distribution network. Although these big efforts, most approaches for clearly identifying and solving the related problems still remain rather inefficient. The accurate identification and the precise calculation of electricity losses enables the clear specification of the critical points and segments in the networks and, consequently, the effective prioritization of actions and interventions in order to reduce those electricity losses and problems. Moreover, the work already performed on this issue, the existing approaches focus mainly on empirical and probabilistic data. Hence, there is still a clear gap between real information and the considered one, which tends to be poor and imprecise. Due to this reality and the lack of appropriate software applications, in this paper we propose a web platform for the management of the whole network of electrical energy distribution, from medium voltage (MV) down to low voltage (LV), including billing on the transformation centers (TCs), electricity losses calculation and proposals for solving actions, by means of a fuzzy decision-making model.

Eficiência energética em uma edificação pública: uma análise das possibilidades

“…Esses dados poderão subsidiar a análise da eficiência do sistema e da viabilidade, quanto ao custo-benefício, de substituição da tecnologia atualmente utilizada. Gaspar et al (2011) apontam como fundamentais as questões relacionadas ao alto custo envolvido na geração de energia elétrica, transmissão e distribuição e o uso eficiente da energia disponível, combinado com a gestão eficiente da rede. Ao tempo em que González et al (2011) propõem que a adoção de ferramentas para monitorar os indicadores ambientais permite à organização: identificar fraquezas e potenciais de otimização, definir objetivos e metas ambientais mensuráveis, buscar a melhoria contínua e dar visibilidade e transparência ao desempenho ambiental.…”

Investigating the effects of bus numbering in a radial transmission network using load-flow study

“…The literature on load-flow solutions (Newton-Raphson or Gauss-Seidel) analysis performed on Nigeria 330kV network is almost in flux, but a regular problem facing researchers for so long is finding the solution to the inaccuracy in the correct assessment of the flow of active and reactive power and line losses [5,6]. In most cases, the magnitude, as well as the location of the voltage, violated buses are fairly determined, but there are discrepancies in the values of active and reactive powers and the overall losses load flow analysis.…”

Novel approach to determine unbalanced current circuit on Nigerian 330kV transmission grid for reliability and security enhancement

“…References [29,30] researched power outages and insecurity in the Nigerian transmission grid; the outcome results provide interesting information on the infirmity influence of fault occurrence. The literature on load-flow iterative solutions analysis performed on Nigeria 330-kV network (test system) is almost in flux, but a regular problem facing researchers for so long is finding the solution to the inaccuracy in the correct assessment of the flow of active and reactive power and line losses [31,32], for the security and reliability enhancement analysis. In most cases, the magnitude, as well as the location of the voltage, violated buses are fairly determined, but there are discrepancies in the values of active and reactive powers and the overall losses [33].…”