Voltage dips performance characterization by PQ indices at national and macro area level

Chiumeo, R.; Nigris, M. de; Gandolfi, Chiara; Garbero, L.; Tenti, Liliana

doi:10.1109/ichqp.2010.5625502

Cited by 8 publications

(7 citation statements)

References 6 publications

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“…Limiting the analysis to a group of regions whose biggest towns are going to be interested by the first UBB deployment phase and which have at least 20 QuEEN sites it is possible to verify a great difference in the performances of Sicily (19,4 event /y*PME in C) and Emilia Romagna result (0,9 event /y*PME in C). The other regions, on the average, show performances which are aligned to the corresponding macro area ones as has been already assessed on national scale in previous work [6] [7][8] [9].…”

Section: A Voltage Dips Statistics At National Macro Area and Regiosupporting

confidence: 63%

The Power Quality of the distribution networks and its impact on the Telecommunication Next Generation Access Network

Chiumeo¹,

Cucchietti²,

Griffa³

et al. 2024

RE&PQJ

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Abstract. The paper deals with the Power Quality of the electrical distribution network and its impact on the new telecommunication networks. In particular, in the frame of the deployment of the Next Generation Access Network (NGAN) in the Fiber To The Cabinet (FTTCab) architecture, the impact of severe voltage dips and micro interruptions on the most important Information and Communications Technology (ICT) devices has been evaluated experimentally by Telecom Italia, defining in particular a sort of customized voltage dips immunity area for its telecommunications network equipment (TLC). On the base of these experimental results RSE has performed statistical analyses on voltage dips occurring outside this area which could be responsible in theory for the telecommunication devices reboot. The analyses are based on the data provided by the MV distribution network monitoring system QuEEN in the assumption that MV dips could be totally transferred to the LV network where the telecommunication cabinets are connected. A short analysis of voltage dips propagation from the medium voltage MV to the low voltage LV networks has been performed, on a few measurements sites at disposal in order to confirm this assumption.

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Section: A Voltage Dips Statistics At National Macro Area and Regiosupporting

confidence: 63%

The Power Quality of the distribution networks and its impact on the Telecommunication Next Generation Access Network

Chiumeo¹,

Cucchietti²,

Griffa³

et al. 2024

RE&PQJ

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“…Besides the network voltage dips performance can be represented in a more synthetic way by a set of single system indices closely related to the network voltage dips performance level. This method is particular suitable to make comparisons among the voltage dip performances of different parts of a network, or to investigate a network historical trend in term of assured power quality level [7]. In particular, at first, simple counting indices, associated to the events which lay below a given immunity curve, can be evaluated together with other more refined indices which can weight, in some way, the single characteristics of the events (duration and residual voltage) with respect to a given immunity curve.…”

Section: Voltage Dip Performance Presentation Methodsmentioning

confidence: 99%

The Italian MV network dip performance characterization by contour charts as defined by UIE/CIGRE’/CIRED WG-C4.110

Chiumeo¹,

Gandolfi²,

Garbero³

et al. 2024

RE&PQJ

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Reporting and analysis procedures play an important role in power quality monitoring systems especially for long term surveys. As far as voltage dips are concerned, the network voltage dip performance can be effectively described in many different ways depending on the aims of the data presentations at both site and system level. The paper deals with network dip performance different representation methods focussing in particular on the way of presentation proposed by the working group UIE/CIGRE'/CIRED C4.110. This method has been applied to the Italian 2009 voltage dips statistic as acquired by the Italian power quality monitoring system named QuEEN. Contour charts have been drawn for both different percentage of the monitoring sites and voltage dips types.

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“…The "counting" indices N 2a and N 3b , usually evaluated to assess the Italian network voltage dips performance [6] [7], have been computed for the first time taking into account the origin of the events. Referring in particular to 2011 statistics, Figure 6 and Figure 7 show the percentage contribution of voltage dips with a HV and a MV origin respectively to N 2a and N 3b , at national level (left side).…”

Section: Voltage Dips Origin and Indicesmentioning

confidence: 99%

The origin of voltage dips monitored in mv network and its effect on the evaluation of MV voltage dips performances indices

Tenti¹,

Chiumeo²,

Gandolfi³

et al. 2013

22nd International Conference and Exhibition on Electricity Distribution (CIRED 2013)

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The subject addressed is the assessment of the origin (High Voltage HV / Medium Voltage MV / Low Voltage LV) of voltage dips monitored on networks and its effect on both voltage dip statistics and indices evaluation at both national and macro area level from the point of view of regulation. The method applied to assess the HV origin of the events refers to both the signal coming from the distance protection of HV lines and to the correlation of the occurrence time of those events which have been monitored on MV bus bars belonging to different HV/MV Primary Substations but underlying a common part of the HV grid. The MV bus bars monitored in this research are those of the Italian MV network monitoring system QuEEN. This method has been partially extended also to the events propagation from the MV to the LV networks thanks to the late installation of a small number of Measurements Units (MU) at specific Secondary Substations in order to realize a sort of "disturbed network tree". The estimation of the percentage of MV events with a probable HV origin at macro area level, for the 2010÷2011 period, has shown a range of variation of about 6%÷15% in comparison with the 37% evaluated at national level. As to the voltage dips performances, indices N 2a and N 3b , their evaluation at national level for 2011 is affected respectively by the 18,6% and 14,7% by voltage dips with a HV origin. As to the events propagation from the MV to the LV networks a good correspondence between the events monitored at the two voltage levels has been observed.

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Voltage dips performance characterization by PQ indices at national and macro area level

Cited by 8 publications

References 6 publications

The Power Quality of the distribution networks and its impact on the Telecommunication Next Generation Access Network

The Power Quality of the distribution networks and its impact on the Telecommunication Next Generation Access Network

The Italian MV network dip performance characterization by contour charts as defined by UIE/CIGRE’/CIRED WG-C4.110

The origin of voltage dips monitored in mv network and its effect on the evaluation of MV voltage dips performances indices

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