Results indicate that the developed method is more effective for harmonic mitigation and improving power quality of …
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The active power direction (APD) method is one of the conventional approaches for harmonic source detection in the distribution system. Although it is simple and easy to implement, serious ...
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Previous studies have proposed various methods to suppress the harmonic oscillation, mainly including HVA method [14, 28-30] and HCC method [13-15]. Both the HVA and HCC methods are focused on reshaping the harmonic characteristics of SAPF to avoid arousing harmonic oscillation.
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3 · Harmonic distortion meters are instruments that measure harmonic distortion or phase position. Harmonic distortion is a common problem in: In communications applications, harmonic distortion meters and phase meters are used to determine when the original frequency transmitted is split into multiple frequencies due to irregularities in …
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of harmonics in power systems is that, over the last few decades, the presence of power electronic (PE) devices drawing non-linear currents [2, 3, 7] has reached unprecedented numbers. This has accelerated the authorities'' effort related to power quality standards and requirements. This trend has continued with recent interest in energy storage,
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Harmonic Modeling Methods for Power Electronic Converters: Case study and Comparison. June 2022. DOI: 10.1109/PEDG54999.2022.9923318. Conference: 2022 IEEE 13th International Symposium on Power ...
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This paper presents an efficient harmonic detection for real-time generation of the reference current fed to a shunt active power filter using the ADALINE neural network. This proposed method is a single layer with 101 nodes generating the coefficients referred to as weights of the reference current model. It effectively overcomes …
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Harmonic filters play a crucial role in maintaining a healthy power grid. They help to reduce the level of harmonic distortion in the system, which can cause a range of problems such as equipment damage and reduced efficiency. By reducing the level of harmonic distortion, harmonic filters can help to improve the quality of the power system.
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The use of FACTS devices in power systems has become increasingly popular in recent years, as they offer a number of benefits, including improved voltage profile, reduced power losses, and increased system reliability and safety. However, determining the optimal type, location, and size of FACTS devices can be a challenging …
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The proposed improved harmonic current detection principle, i.e., DS-SDFT harmonic detection method, is shown in Fig. 3. Fig. 3. Principle of DS-SDFT harmonic detection method. Full size image. where e is the grid voltage, and ix ( x = a,b,c) is the AC side three-phase load current. The DS-SDFT harmonic detection algorithm …
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Measurements of 18-pulse drives in most power systems results in THID of approximately 7-8%. Because 18-pulse low-voltage drives use parallel bridges, they are sensitive to voltage imbalance on the power line as well as degraded performance at low load levels. This is seen in Fig. 5. Figure 5 – 18-pulse VFD performance.
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In order to meet the Power Quality objectives, 95% of the measured values should be less than specified values. Fig. M10 gives the maximum harmonic voltage in order to meet the requirements of standard EN50160: "Voltage characteristics of electricity supplied by public distribution networks", for Low and Medium Voltage.
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The manuscript proposes the design and implementation of a photovoltaic-assisted dynamic voltage restorer with fuzzy-logic control (FLC)-based Improved Second-order Generalized Integrator (I-SOGI) scheme to improve power quality (PQ) in the power system by using an enhanced approach. The proposed method …
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With the optimal setup and adaptive power distribution approach, both energy storage units operate within the specified power and capacity range at the same time the battery is protected...
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Numerical optimization method is one of the methods to achieve the optimal global solution in optimization problems. This chapter of the book is about FACTS devices placement using numerical method. This method is performed in a radial Transmission system to minimize the power losses and improve the voltage profile.
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Most power utilities within Southern Africa are faced with the challenges of harmonic distortion due to the high penetration of renewable energy sources (RES) and the use of electronic devices. There is an excessive total harmonic distortion (THD) measured at the point of common coupling (PCC). In this paper, a proposed harmonic monitoring …
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This paper presents a solar Photovoltaic (PV) inverter along with a battery energy storage device in shunt with a three-phase grid. Apart from sharing the load active power, the other objective of the PV-battery integrated system is to provide load harmonic and reactive power compensation throughout the day. The interface between the grid and the PV is …
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Devices without Energy Storage Components dustry Applications, IEEE Transactions, IA-20(3):625-630. [7] Y ... analyzed harmonic detection improvement methods based on instantaneous reactive ...
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A performance testing procedure exposes the device under test (DUT) to a series of expected environmental and operational conditions to provide needed information about …
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This paper presents a control algorithm of 3ph STATic synchronous COMpensator (STATCOM). The. algorithm dep ends on the a ccurate reference currents extraction from only the nonlinear load current ...
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Harmonics in power systems refer to the sinusoidal components of a periodic waveform having frequencies that are integral multiples of the fundamental frequency. If the fundamental frequency is denoted as ''f'' (usually 50 or 60 Hz for power systems), the 2nd harmonic is 2f, the 3rd harmonic is 3f, and so on. The fundamental frequency, or the 1st ...
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Alfred Hesener. Abstract -- Increasing power density, faster switching and higher currents forces designers to spend more time both considering the effects of electromagnetic interference (EMI) and debugging a design that has EMI problems but is otherwise complete. This paper explains the different types of EMI and their coupling mechanisms and ...
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Energy storage has been developed on a large scale. In recent years, when new energy equipment based on power electronic converters such as wind power, photovoltaic, and flexible direct is connected to the system, harmonic resonance is caused and brought
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Individual Test Method of Grid-connected Protective Equipment etc. for Multi-unit Grid-connected PV Power Generating Systems (for PV Multi-unit Grid-interconnection Systems) Individual test method for grid interconnection protection device for storage battery
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The power quality (PQ) problems are exaggerated as a consequence of the use of non-linear loads such as adjustable velocity drive, inverters, and switched-mode power supply (SMPS), etc. [9]. This ...
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This article gives a survey of the commonly used methods for harmonic detection in active power filters (APFs). The work proposes a simulation setup that decouples the harmonic detection method from the active filter model and its controllers. In this way, the selected methods can be equally analyzed and compared with respect to …
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To improve the power density of series-connected multi-pulse rectifiers (MPRs), the harmonic generation principle is studied and the optimization design method for main transformers is proposed. According to the topology of series-connected 18-pulse rectifier, its operation waveforms are analysed, and the Fourier series of the waveforms is …
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This technique should improve the power quality of the current and voltage signals by minimizing the harmonics and making the signals sinusoidal. Moreover, adding a hybrid storage system consisting of batteries and supercapacitors will increase the system''s
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Battery energy storage system (BESS) in microgrids can not only be used to remain power balance of micro-grids, but also to suppress harmonic currents injected …
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Abstract: Battery energy storage systems (BESSs) have become an important measure for increasing renewable energy penetration and maintaining system supply reliability in …
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In this paper, the load modulation process of a Doherty power amplifier (DPA) is analyzed to address the issue of why designed DPAs have a very low efficiency in the back-off state in some cases. A general formula of the real load modulation process is also given for analyzing the load modulation of a peak PA matching network. This …
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This paper presents an efficient harmonic detection for real-time generation of the reference current fed to a shunt active power filter using the ADALINE neural network. This proposed method is a single layer with 101 nodes generating the coefficients referred to as weights of the reference current model. It effectively overcomes …
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Harmonic filtering techniques are essential for enhancing power quality and reducing harmonics'' detrimental effects on power systems. Passive and active filtering are the two techniques categorized under harmonic filtering. The characteristics, benefits, and shortcomings of both passive and active filtering techniques will be covered in this ...
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