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1

Strumień innowacyjności w Wodociągach Miasta Krakowa S.A.

Kaleta Joanna

Kierunek Wod-Kan

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2022

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Nr 2

18--20

PL

Mając na uwadze fakt, że uczenie się jest podstawową wartością, że przyszłość spółki zależy od zatrudnionych pracowników oraz ze względu na potrzebę motywacji ludzi do zaangażowania się w proces uczenia - w Wodociągach Miasta Krakowa powstała koncepcja Akademii Kadry Rozwojowej.

2

Detection of anomalous consumers based on smart meter data

Kaleta Joanna, Dubinski Jan, Wojdan Konrad, Swirski Konrad

Journal of Power Technologies

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2021

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Vol. 101, nr 4

202--212

EN

The continuous smart grid development makes the advanced metering infrastructure an essential part of electricity management systems. Smart meters not only provide consumers with more economical and sustainable electricity consumption but also enable the energy supplier to identify suspicious behaviour or meter failure. In this work, a shape-based algorithm that indicates households with abnormal electricity consumption pattern within a given consumer group was proposed. The algorithm was developed under the assumption that the reason for unusual electricity consumption may not only be a meter failure or fraud, but also consumer’s individual preferences and lifestyle. In the presented methodology, five unsupervised anomaly detection methods were used: K Nearest Neighbors, Local Outlier Factor, Principal Component Analysis, Isolation Forest and Histogram Based Outlier Score. Two time series similarity measures were applied: basic Euclidean distance and Dynamic Time Warping, which allows finding the best alignment between two time series. The algorithm’s performance was tested with multiple parameter configurations on five different consumer groups. Additionally, an analysis of the individual types of anomalies and their detectability by the algorithm was performed.

3

Impact of Cedzyna reservoir on selected physicochemical parameters of river water quality (Swietokrzyskie Mountains, Poland)

Przybylska Joanna, Kaleta Joanna, Kozłowski Rafał

Chemistry-Didactics-Ecology-Metrology

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2019

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R. 24, NR 1-2

117--125

EN

The monitoring of selected physicochemical parameters and chemical composition of water was conducted in 2017-2018 in the Lubrzanka river and the Cedzyna reservoir (Swietokrzyskie Mountains, Poland). The results indicate that the impact of reservoir on the quality of river water depends on natural characteristics of the catchment as well as on the present anthropogenic pressure. Retention of water in the reservoir caused seasonally diversified changes in analysed parameters, including an increase in water temperature, retention of major ions, nutrients and trace elements. Further research is needed to assess the risk of contamination of lower course of the river with metals deposited in reservoir’s bottom sediments.