A Low Cost PMU to Monitor Distribution Grids

Angioni, Andrea; Lipari, Gianluca; Pau, Massimiliano; Ponci, Ferdinanda; Monti, Antonello

doi:10.1109/amps.2017.8078337

Cited by 55 publications

(25 citation statements)

References 8 publications

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“…The decrease in their cost is clearly one of the leverages to allow a widespread installation of PMUs. In this perspective, several research projects are dealing with the design of low-cost PMU-like devices that are designed on embedded platforms; this may enable their diffusion even at LV level [41][42][43]. From a metrological viewpoint, PMUs conceived for SDN applications must comply with different requirements than classic PMUs for transmission systems since lower voltage drops and phase-angle differences are concerned.…”

Section: Synchronized Measurement Systemsmentioning

confidence: 99%

A Multidisciplinary Approach for the Development of Smart Distribution Networks

et al. 2018

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Electric power systems are experiencing relevant changes involving the growing penetration of distributed generation and energy storage systems, the introduction of electric vehicles, the management of responsive loads, the proposals for new energy markets and so on. Such an evolution is pushing a paradigm shift that is one of the most important challenges in power network design: the management must move from traditional planning and manual intervention to full “smartization” of medium and low voltage networks. Peculiarities and criticalities of future power distribution networks originate from the complexity of the system which includes both the physical aspects of electric networks and the cyber aspects, like data elaboration, feature extraction, communication, supervision and control; only fully integrated advanced monitoring systems can foster this transition towards network automation. The design and development of such future networks require distinct kinds of expertise in the industrial and information engineering fields. In this context, this paper provides a comprehensive review of current challenges and multidisciplinary interactions in the development of smart distribution networks. The aim of this paper is to discuss, in an integrated and organized manner, the state of the art while focusing on the need for interaction between different disciplines and highlighting how innovative and future-proof outcomes of both research and practice can only emerge from a coordinated design of all the layers in the smart distribution network architecture.

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Section: Synchronized Measurement Systemsmentioning

confidence: 99%

A Multidisciplinary Approach for the Development of Smart Distribution Networks

et al. 2018

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“…While this would be prohibitively expensive at present PMU prices, as costs decrease we expect such a setup to become more and more realistic and µPMUs to become widespread for different applications [30]. Currently, different research projects are ongoing to design low-cost PMUs [31], [32] and the aim is a pervasive installation in DN [33]. In the tests, every branch is considered to be monitored by only one PMU, as in previous sections, and all the measurements are referred to the same timescale, since PMU time-tags allow alignment.…”

Section: Tests and Resultsmentioning

confidence: 99%

Line Impedance Estimation Based on Synchrophasor Measurements for Power Distribution Systems

Pegoraro

Brady

Meier

2019

IEEE Trans. Instrum. Meas.

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Effective monitoring and management applications on modern distribution networks require a sound network model and the knowledge of line parameters. Network line impedances are used, among other things, for state estimation and protection relay setting. Phasor Measurement Units (PMUs) give synchronized voltage and current phasor measurements, referred to a common time reference (coordinated universal time). All synchrophasor measurements can thus be temporally aligned and coordinated across the network. This feature, along with high accuracy and reporting rates, could make PMUs useful for the evaluation of network parameters. However, instrument transformer behavior strongly affects parameter estimation accuracy. In this paper, a new PMU-based iterative line parameter estimation algorithm for distribution networks, which includes in the estimation model systematic measurement errors, is presented. This method exploits the simultaneous measurements given by PMUs on different nodes and branches of the network. A complete analysis of uncertainty sources is also performed, allowing the evaluation of estimation uncertainty. Issues related to operating conditions, topology and measurement uncertainty are thoroughly discussed and referenced to a realistic model of a distribution network to show how a full network estimator is possible.

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“…In order to implement the compensation technique described at the end of Section II, it is essential to characterize first the four error sources defined in (15). The methodology approach followed for the analysis of each source is discussed for sake of clarity in separate subsections.…”

Section: Uncertainty Analysismentioning

confidence: 99%

“…Its versatility emerges for instance from its adoption for educational purposes: for example, in conjunction with Matlab Simulink blocks, it is used to propose laboratory exercises on PMU algorithms for undergraduate students in UK and Mexico [14]. A concrete application of a RPi as fully functional PMU was introduced with the LoCo PMU [15], where the authors present a low-cost device that integrates an external DAQ board and a GPS module. The solution to the synchronization problem consists in this case in the direct triggering of the DAQ acquisition by using the PPS from the GPS module.…”

Section: Introductionmentioning

confidence: 99%

Error Model in Single-Board Computer-Based Phasor Measurement Units

Carducci

Lipari

Giaquinto

et al. 2020

IEEE Trans. Instrum. Meas.

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 Abstract-Phasor Measurement Units (PMUs) are measurement devices long used in transmission systems and today even more essential for a proper monitoring of distribution grids. The expected massive penetration of distributed energy resources (DERs) is slowly taking place, carrying along a new set of challenges that put to test traditional instruments and requiring more performance and flexibility to adapt to this evolving scenario. Cheap devices based on single board computer (SBC) are proving to be a valid alternative to traditional PMU architectures, able to combine together high-performance, great versatility and low-cost. However, such devices lack a proper modeling of their measurement errors that conversely would be extremely useful for improving their design and evaluate their performance in accordance with the relevant standards. The paper intends to fill this gap by discussing the error sources and their effects on the observed signals. An analysis of error statistics is presented, in order to give a more complete metrological characterization.

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A Low Cost PMU to Monitor Distribution Grids

Cited by 55 publications

References 8 publications

A Multidisciplinary Approach for the Development of Smart Distribution Networks

A Multidisciplinary Approach for the Development of Smart Distribution Networks

Line Impedance Estimation Based on Synchrophasor Measurements for Power Distribution Systems

Error Model in Single-Board Computer-Based Phasor Measurement Units

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