Observability of low voltage grids: Actual DSOs challenges and research questions

Sánchez, Rubén; Iov, Florin; Kemal, Mohammed; Stefan, Maria; Olsen, Rasmus Løvenstein

doi:10.1109/upec.2017.8232008

Cited by 19 publications

(4 citation statements)

References 11 publications

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“…It is necessary to develop low-cost smart metering devices that comply with international standards [106] and architectures for data collection from thousands of smart meters in a relatively short period (on the order of minutes) it is not feasible nowadays [107], having into account the diversity of metering technologies installed, the acquisition time and uncertainties associated to each of them [108]. The DSSE must model these uncertainties locally and find ways to take advantage of information from different time scales and combine them with artificial measurements if necessary.…”

Section: Efficient Metering and Data Acquisition Architecturesmentioning

confidence: 99%

Bibliometric study of distribution system state estimation: advances and challenges

Lara-Sánchez,

Samper,

Colomé

2024

DYNA

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An active distribution network with a large amount of distributed energy resources (DER) requires knowledge of the operational status of the network. In this sense, state estimation is one of the most widely used techniques and a well-developed concept in transmission systems. DERs have some monitoring, protection, and control devices. But due to the large size of the network and the number of users, the massive installation of meters is not yet economically feasible. Therefore, it is necessary to generate artificial measurements to perform all stages of distribution system state estimation (DSSE). DSSE is currently the subject of active research, so this article performs a descriptive bibliometric study, which qualitatively and quantitatively analyzes the topics found in the specialized literature in the period from 2000 to 2022 and part of the 2023. It also identifies the advances, challenges, and proposals for future lines of research in DSSE.

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Section: Efficient Metering and Data Acquisition Architecturesmentioning

confidence: 99%

Bibliometric study of distribution system state estimation: advances and challenges

Lara-Sánchez,

Samper,

Colomé

2024

DYNA

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“…Connecting large number of SMs, located at consumer nodes, with DCUs through limited PLC communication may lead to slow update rates [19]. To take communication latency into account, the confidence of the SM measurements is reduced in proportion to their time delay [10].…”

Section: Maementioning

confidence: 99%

DSSE in European-Type Networks Using PLC-Based Advanced Metering Infrastructure

Ahmed

Cano

Arboleya

et al. 2022

IEEE Trans. Power Syst.

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This paper addresses the problem of real-time state estimation in European-type four-wire low-voltage distribution networks with advanced metering infrastructure based on power line communication (PLC). The main drawback of this type of infrastructure is its high latency and a sequential data sampling process. Both factors make it difficult to obtain instantaneous values from the smart meters in a timely and adequate manner to estimate the real-time state of the system. This problem may be solved in the future with the deployment of metering systems based on other technologies such as 5G. However, PLC technology prevails in many countries, and is not likely to be replaced in the medium term. In the meantime, a solution is needed to provide acceptable real-time state estimates in low voltage networks, not to hinder the active management of these assets in the context of smart grids. In this work, a solution is proposed that allows estimating the state of the low voltage network with a reasonable accuracy considering the low quality of the measurements provided by the deployed infrastructure. The system is validated using a portion of a real pilot network located in the north of Spain fed by a transformer station with seven feeders.

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“…The observability of the distribution network (low and medium voltage, LV and MV) is becoming a key-factor after the huge revolution of the grid towards the smart grid concept [1][2][3][4][5]. Effective control stability of the network and fair energy billing [6][7][8] are possible when accurate measurements of the energy consumed/generated by users/producers are collected by energy meters (EM). In addition, the knowledge of such critical quantities can be used to run several algorithms used to manage and control the network [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Testing of Electrical Energy Meters Subject to Realistic Distorted Voltages and Currents

et al. 2020

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This paper presents a study on revenue active electrical energy meters. The huge installation along the distribution network of these devices made them a key element for energy billing, but also for monitoring the grid status. Hence, it is evident that the relevance of guaranteeing a trusty metering performance, and consequently a proper standardization, is needed. The operation of the meters is regulated by standards harmonized with the European Directive 2014/32/EU (known as MID). Still, and not infrequently, compliance to some legacy standards is declared on the device specifications. Thus, a brief comparison between the latest standards is presented. In particular, the focus was set on evaluating the potential impact of the harmonic disturbances on the energy meter accuracy, since they are omnipresent in the modern power networks. The evaluation has been carried out on three off-the-shelf class B meters by means of a new test procedure that considers realistic and quasi-realistic harmonic disturbances. Such tests showed that realistic harmonic disturbances affect significantly only some energy meters. Therefore, the standards should not neglect this kind of scenario.

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Observability of low voltage grids: Actual DSOs challenges and research questions

Cited by 19 publications

References 11 publications

Bibliometric study of distribution system state estimation: advances and challenges

Bibliometric study of distribution system state estimation: advances and challenges

DSSE in European-Type Networks Using PLC-Based Advanced Metering Infrastructure

Testing of Electrical Energy Meters Subject to Realistic Distorted Voltages and Currents

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