Power quality monitoring systems more information than just waveforms and events

Olechiw, Wieslaw Jerry; Sabin, D.D.; Dimitriu, Cristiana; Doherty, Frank; McLeod, Gary W.

doi:10.1109/ichqp.2014.6842812

Cited by 8 publications

(2 citation statements)

References 4 publications

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“…Thus, it can cause increases in network tariffs to mitigate these disturbances if not monitored well [34]. Many studies have developed a method for monitoring the PQ including harmonic distortion [32,[35][36][37][38][39][40][41][42][43][44]; thus, there is a gap to monitor and manage harmonics as early as the planning phase and include the harmonic limits in contract agreements.…”

Section: Introductionmentioning

confidence: 99%

A Proposed Harmonic Monitoring System for Large Power Users Considering Harmonic Limits

2020

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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 system for large power users (LPUs) is developed. This proposed system considers harmonic limits of the individual and THD of the customers allowed injecting into the network, which should be part of the contractual electricity supply agreement (ESA). Hence, it will enable the monitoring of harmonic distortion to be smooth by determining whether the customer has passed or failed compliance for individual harmonic order and the THD of the voltage. The measurements of harmonic distortion are done using the Unipower power quality (PQ) analyzers that are connected at different points within the industrial network. Measurements of harmonic distortion of an industrial site are compared to the simulation results performed by DIgSILENT software to validate the proposed harmonic monitoring system. Based on the validation results, it is recommended that the ESA between the power utilities and the customers should consist of the harmonic limits.

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Section: Introductionmentioning

confidence: 99%

A Proposed Harmonic Monitoring System for Large Power Users Considering Harmonic Limits

2020

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“…Furthermore, there has been work on the system identification of specific electric machines using active filters and data summarization [20]- [23]. Recent technological advances have augmented the performance of power quality monitors and some smart meters beyond just monitoring power quality events [24]- [26]. In this paper, a new generic method for electric load identification is presented.…”

Section: Introductionmentioning

confidence: 99%

Defining the Unique Signatures of Loads Using the Currents’ Physical Components Theory and $Z$-Transform

Calamero

Beck

Shmilovitz

2015

IEEE Trans. Ind. Inf.

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A method to extract unique features from measured waveforms of nonlinear loads is presented. These features can be used for the identification of loads connected to the grid. The method is based on the currents' physical components (CPC) electric power transport theory combined with the Z-transform (for implementation using digital signal processing (DSP). A set of admittance-based Z-transform functions that reflect the current physical components suggested by the CPC is constructed. The resulting transfer functions are shown to reflect the electric physical significance, and are used for electric load and machine identification through its electric characteristics. In this paper, the Z-transform analytic expressions are developed and extended along with their physical comprehension. Moreover, the strength of the theory over more traditional spectral analysis is explained. The method presented in this paper is demonstrated and analyzed using real-world measured waveforms (measured by power quality monitors). Index Terms-Load identification, power transfer theory, smart grid.1551-3203 worked with R&D for the Israel Air-Force (IAF), where he developed power processing topologies for avionic systems. During 1997-1999, he was a Post-Doctorate Fellow with New York Polytechnic University, Brooklyn, NY, USA. Since 2000, he has been with the Faculty of Engineering, Tel-Aviv University, where he heads the Power Electronics and Power Quality Research Group. He has authored and coauthored over 100 papers, of which over 40 are in refereed journals. His research interests include general circuit theory, switched-mode converters, power quality, special applications of power electronics (such as for alternative energy sources) powering of autonomous sensor networks, and implanted medical devices.

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Power Quality Parameters Calculation Using FPGA Embedded Parallel Processors in Compliance with the IEC 61000-4-30 Standard

Luiz

Duque

Almeida

et al. 2022

J Control Autom Electr Syst

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Power quality monitoring systems more information than just waveforms and events

Cited by 8 publications

References 4 publications

A Proposed Harmonic Monitoring System for Large Power Users Considering Harmonic Limits

A Proposed Harmonic Monitoring System for Large Power Users Considering Harmonic Limits

Defining the Unique Signatures of Loads Using the Currents’ Physical Components Theory and $Z$-Transform

Power Quality Parameters Calculation Using FPGA Embedded Parallel Processors in Compliance with the IEC 61000-4-30 Standard

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