Procedure for Determining Induction Motor Efficiency Working Under Distorted Grid Voltages

2017

JESTR

Distribution network reconfiguration (DNR) continues to be a good option to reduce technical losses in a distribution power grid. However, this non-linear combinatorial problem is not easy to assess by exact methods when solving for large distribution networks, which requires large computational times. For solving this type of problem, some researchers prefer to use metaheuristic techniques due to convergence speed, near-optimal solutions, and simple programming. Some literature reviews specialize in topics concerning the optimization of power network reconfiguration and try to cover most techniques. Nevertheless, this does not allow detailing properly the use of each technique, which is important to identify the trend. The contributions of this paper are three-fold. First, it presents the objective functions and constraints used in DNR with the most used metaheuristics. Second, it reviews the most important techniques such as particle swarm optimization (PSO), genetic algorithm (GA), simulated annealing (SA), ant colony optimization (ACO), immune algorithms (IA), and tabu search (TS). Finally, this paper presents the trend of each technique from 2011 to 2016. This paper will be useful for researchers interested in knowing the advances of recent approaches in these metaheuristics applied to DNR in order to continue developing new best algorithms and improving solutions for the topic.

Section: Discussionmentioning

confidence: 99%

Recent Trends of the Most Used Metaheuristic Techniques for Distribution Network Reconfiguration

Quintero-Duran

Candelo-Becerra

2017

JESTR

“…The analysis of the individual harmonics is important because each level of harmonic according to its sequence has a different impact on the elements and devices of electrical circuits [12], [26]. The average of measurements of IVD and ICD in both areas is presented in Fig.…”

Section: Fig3 Probability Distribution Function Of (A) Thdi and (B)mentioning

confidence: 99%

“…According to [22], [23], the values achieved of IVD and ICD in harmonics of fifth and seventh order generated by PWM motor drives, would be sufficient to cause resonance and multiplication of the harmonic currents and voltages and affect the capacitors. In [9], [11], [12] it is shown that with the behaviour of IVD in the two areas, losses and heating in motors is increased. Therefore, its efficiency and life expectative is reduced.…”

Section: Fig3 Probability Distribution Function Of (A) Thdi and (B)mentioning

confidence: 99%

Analysis of harmonic distortion generated by PWM motor drives

2017 IEEE Workshop on Power Electronics and Power Quality Applications (PEPQA)

Hernandez

Quispe

et al. 2017

Self Cite

This paper evaluates the harmonic distortion generated by PWM motor drives in an electrical industrial system of a wheat flour mill company. For this, a comparative study between two industrial circuits connected at the same point of common coupling with similar characteristics of load and transformers is presented. The difference is that one circuit has PWM motor drives and the other does not have them. In the study, a practical method based on the statistical characterization of the total harmonic distortion of voltage (THDV) and current (THDI), individual voltage distortion (IVD), individual current distortion (ICD) and K-Factor is applied. As result, it was observed that PWM motor drives generated harmonics voltage mainly of fifth and seventh order with values that exceed limits established by standards in both circuits. In the work is also demonstrated that in the analysis of harmonics is necessary to consider various parameters and not only one.

“…Some studies demonstrate that the harmonics of fifth and seventh order are the most harmful for motor operation [11], [12]. In [11], a 100 hp motor supplies with 6% of IVD of fifth-order harmonic, reduced its motor life in 18%.…”

Section: Introductionmentioning

confidence: 99%

“…In [11], a 100 hp motor supplies with 6% of IVD of fifth-order harmonic, reduced its motor life in 18%. In [12], is demonstrated that the efficiency is reduced by 3%, in a 1.5 kW motor operating in the presence of harmonics of fifth and seventh order. Harmonics also have significant effects on the oscillations frequency of torque and vibrations [13].…”

Section: Introductionmentioning

confidence: 99%

Harmonic Distortion Evaluation Generated by PWM Motor Drives in Electrical Industrial Systems

Herrera

Quispe

et al. 2017

IJECE

This paper evaluates the harmonic distortion generated by PWM motor drives in an electrical industrial system of a wheat flour mill company. For this, a comparative study between two industrial circuits connected at the same point of common coupling (PCC) with similar characteristics of load and transformers is presented. The difference is that one circuit has PWM motor drives and the other does not have them. In the study, a practical method based on the statistical characterization of the total harmonic distortion of voltage (THDV) and current (THDI), individual voltage distortion (IVD), individual current distortion (ICD) and K-Factor is applied. As result, it was observed that PWM motor drives generated voltage harmonics mainly of fifth and seventh order with values that exceed limits established by standards in both circuits. With these values, the operation of elements such as capacitors, motors and transformers can be affected. In the work is also demonstrated that in the analysis of harmonics is necessary to consider various parameters and not only one.