Time Series Representation Learning Applications for Power Analytics

Anish Mathew, Deepak P, Sahely Bhadra, Naran Pindoriya, Aristides Kiprakis, S. N. Singh

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Abstract

The uptake of solar power generation is on the rise. This necessitates more research into developing data-driven intelligent methods that can perform effective analytics over power generation data to inform strategies to improve solar power generation systems. In this paper, we consider the utility of time series representation learning for analytics over power generation data. WaRTEm, a representation learning method that focuses on learning time series representations that are invariant to local phase shifts, is the focus of our investigations in this paper. We identify two metadata attributes for power generation sequences, month and CellID, as attributes that embed useful notions of semantic similarity between time series sequences. We evaluate the effectiveness of WaRTEm representations, as against using the raw time series sequences, in alignment to the month and CellID labellings, using accuracy over 1NN retrieval as an evaluation framework. Through empirical evaluations, we identify that WaRTEm embeddings are consistently able to achieve better representations when evaluated on 1NN accuracy. We also identify some features of WaRTEm that are more suited for time series representation learning, which provides promising directions for future work.
Original languageEnglish
Title of host publication20th International Conference on Intelligent System Applications to Power Systems: Proceedings
Publisher IEEE
Number of pages5
ISBN (Electronic) 978-1-7281-3192-4
ISBN (Print)978-1-7281-3193-1
DOIs
Publication statusPublished - 20 Dec 2019
Event20th International Conference on Intelligent System Applications to Power Systems: ISAP 2019 - India, New Delhi, India
Duration: 10 Dec 201914 Dec 2019
http://www.isap-power.org/2019/

Conference

Conference20th International Conference on Intelligent System Applications to Power Systems
CountryIndia
CityNew Delhi
Period10/12/201914/12/2019
Internet address

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  • Cite this

    Mathew, A., P, D., Bhadra, S., Pindoriya, N., Kiprakis, A., & Singh, S. N. (2019). Time Series Representation Learning Applications for Power Analytics. In 20th International Conference on Intelligent System Applications to Power Systems: Proceedings IEEE . https://doi.org/10.1109/ISAP48318.2019.9065991