Assessment of Power quality performance in distribution networks part I - Measurement campaign and initial analysis

Gasch, Etienne; Domagk, Max; Meyer, Jan; Abdel-Rahman, S. M.; Liao, Huilian; Milanović, Jovica V.

doi:10.1109/ichqp.2016.7783325

Cited by 10 publications

(8 citation statements)

References 2 publications

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“…In this paper, due to space limitation, only the comparison with the unified power-quality index (UPQI) [17] and combined PQ index (CPQI) [12] is presented. Further comparison with the most recently proposed global PQ index is available in [26,27]. For all three indices, compared here, higher PQ index suggests worse PQ performance.…”

Section: Comparison With Other Global Indicesmentioning

confidence: 95%

Compound index for power quality evaluation and benchmarking

Milanović

Abdel-Rahman

Liao

2018

IET Generation, Transmission & Distribution

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High level of delivered Power Quality (PQ) is becoming one of the key performance indicators for both contemporary and future power networks. The increased proliferation of converter connected generation and load in power networks, increased sensitivity to network disturbances of some of these new types of devices and requirements for more flexible operation of power networks led to the revision of some of PQ standards and introduction of modified or in some cases new requirements for PQ compliance. Although almost all PQ phenomena, with exception of voltage transients, are well defined and appropriate thresholds for individual phenomena are set in international standards, there is no standardized nor commonly accepted way to describe and evaluate the overall PQ performance at buses. This paper presents an analytic hierarchy process (AHP) inspired methodology for assessing the overall PQ performance at a bus based on several different PQ phenomena considered simultaneously. Compound Bus PQ Index (CBPQI) is defined using AHP to present the overall PQ performance at the bus with respect to voltage sag, harmonics and voltage unbalance. The application of the methodology is illustrated on a 295 bus generic distribution network.

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Section: Comparison With Other Global Indicesmentioning

confidence: 95%

Compound index for power quality evaluation and benchmarking

Milanović

Abdel-Rahman

Liao

2018

IET Generation, Transmission & Distribution

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“…In the last decade, several research groups from around the world have collected measurement data for power quality assessment. Different load types were measured for more than a year in Germany [4]. Data were aggregated on 10-minute scale, and power quality was analysed according to EN 50160.…”

Section: Introductionmentioning

confidence: 99%

Survey of a Power Quality Measurement Campaign in Low-Voltage Grids

Püvi

Tukia

Lehtonen

et al. 2019

2019 Electric Power Quality and Supply Reliability Conference (PQ) &Amp; 2019 Symposium on Electrical Engineering and Mechatron

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With an increasing share of renewable energy generation becoming connected to distribution grids, power quality has attracted the attention of grid operators and academia. However, to obtain a realistic picture, power quality distortions caused by renewables should be superimposed on already existing emissions in grids. Measured household load data is tedious to acquire and is not publicly available. This paper presents the data from a low-voltage feeder measurement campaign and it is divided into voltage and feeder current analyses. The voltage parameters are validated as per EN 50160. The measured data includes measurements from feeders supplying single-family homes as well as one apartment building. A total of 24 weeks of 10-second mean values were recorded in the Helsinki region of Finland. Results indicate that the voltage quality is within the acceptable limits. The feeder currents show load unbalance in single-family homes and high utilisation rate of feeders supplying multiple customers.

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“…In case a compliance assessment according to standards is required, the minimum of all indices q, which are going to be aggregated, is used (APQI min ). This approach is discussed and applied in the first part of the paper [22].…”

Section: ) Aggregation Of Indicesmentioning

confidence: 99%

“…Starting from these individual indices a flexible aggregation with different levels of detail is possible. Two different approaches can be used for the aggregation: minimum or average (see also section V in Part I [22]). The individual indices are aggregated in several stages.…”

Section: B Apqi -Aggregated Power Quality Indexmentioning

confidence: 99%

Assessment of Power Quality performance in distribution networks part II - Performance Indices and ranking of network buses

Abdel-Rahman

Liao

Milanović

et al. 2016

2016 17th International Conference on Harmonics and Quality of Power (ICHQP)

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Abstract-Power Quality has become one of the main measures of distribution network operation evaluation. Utilities and customers monitor the different PQ aspects for benchmarking and compatibility check. This is a second part of a paper that investigates a long term PQ measurement campaign. In this part, global PQ indices are applied to combine a number of PQ phenomena indices into one number that represents the PQ performance of a site. Two global PQ indices are applied on 64-week PQ measurements of 8 sites. The indices are compared in terms of the final rank of sites. Different levels of flexibility are introduced to the indices to consider a variable importance or priority of the phenomena and sites.

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Assessment of Power quality performance in distribution networks part I - Measurement campaign and initial analysis

Cited by 10 publications

References 2 publications

Compound index for power quality evaluation and benchmarking

Compound index for power quality evaluation and benchmarking

Survey of a Power Quality Measurement Campaign in Low-Voltage Grids

Assessment of Power Quality performance in distribution networks part II - Performance Indices and ranking of network buses

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