The effects of harmonics on overcurrent relays

Wannous, Kinan; Toman, Petr

doi:10.1109/epe.2016.7521794

Cited by 8 publications

(2 citation statements)

References 9 publications

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“…This may be a source of additional power losses in electrical devices or their incorrect operation. Its destructive influence is noticed on passive elements such as cables [11] or capacitors, and on active devices as well, e.g., current interrupters [12][13][14], which may behave unpredictably. In extreme cases, an increased level of generated losses may be a source of premature aging of relay components or decreased effectiveness of current interruption.…”

Section: Of 21mentioning

confidence: 99%

Simulation Analysis of LED Stripes Drivers’ Influence on Electric Energy Quality

2022

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This paper presents a comparative simulation study of the operation of various types of drivers dedicated for use in light-emitting diode (LED)-based light stripes. The study comprises an experimentally verified simulation in view of their influence on harmonic content generation and impact on electric energy quality. The simulation models were optimized in order to precisely reflect the currents and voltage waveforms recorded in the frame of laboratory measurements. The simulation parameters were adjusted in view of harmonic generation analysis and high-frequency (HF) transient presence resulting from circuit principles of operation. Two driver circuit types were analyzed in the framework of the study—a voltage stabilization circuit based on a Zener diode, and a current stabilization integrated circuit (IC) based on an AL8806 chip. The study results entail an analysis executed for light stripes comprising various numbers of LEDs connected to each driver and various numbers of each of the tested drivers equipped with the same number of LEDs used as load. Based on the simulation, THD factors, harmonic components spectrum, waveform factors, power factors analysis and HF transient parameters were determined. The obtained simulations results are characterized by a high level of similarity in relation to results gained by means of measurements.

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Section: Of 21mentioning

confidence: 99%

Simulation Analysis of LED Stripes Drivers’ Influence on Electric Energy Quality

2022

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“…The presence of current harmonics in power networks negatively affects installed devices. Its destructive influence is observed on passive elements like cables or capacitors, i.e., decreasing their durability [3][4][5][6], and on active devices as well, e.g., switching apparatus or protective relays [7,8]. The presence of harmonics may result in power network components behaving unpredictably [9] or may cause deterioration of operating conditions.…”

Section: Problem Statementmentioning

confidence: 99%

Study of Arc Parameters of AC Relays Operating under Distorted Supply Voltage Conditions

Smugala

Bonk

2020

Energies

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The paper presents a procedure for measuring and analyzing the switching arc parameters occurring in air-insulated low voltage (LV) relays operating in distorted supply voltage conditions. The main purpose of the research was the analysis of the switching arc duration and its energy affecting the current breaking capacity of the selected LV current interrupters (CI). The performed study and simple statistical analysis enabled the determination of the main factors and their impact level on parameters of the switching arc that comes about during switching-off operation. Experimental tests executed for various shapes of the supply voltage but similar RMS (Root Mean Square) and THD (Total Harmonic Distortion) values and for various breaking moments of the load current allowed recognition of the decisive factors for estimating the tested relay’s switching-off capacity. Tests stand combined with dedicated software developed in the frame of the research, permiting fast calculation of the arc parameters based on a large number of recorded diagrams.

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Influence of Detuned Reactor Placement to Power Quality Enhancement in Industrial Customers Distribution Network

Gumilar

Kusumawardana

Habibi

2020

2020 10th Electrical Power, Electronics, Communications, Controls and Informatics Seminar (EECCIS)

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The effects of harmonics on overcurrent relays

Cited by 8 publications

References 9 publications

Simulation Analysis of LED Stripes Drivers’ Influence on Electric Energy Quality

Simulation Analysis of LED Stripes Drivers’ Influence on Electric Energy Quality

Study of Arc Parameters of AC Relays Operating under Distorted Supply Voltage Conditions

Influence of Detuned Reactor Placement to Power Quality Enhancement in Industrial Customers Distribution Network

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