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Energies 2019, 12(1), 193; https://doi.org/10.3390/en12010193

Sample Entropy Based Net Load Tracing Dispatch of New Energy Power System

School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China
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Received: 18 November 2018 / Revised: 25 December 2018 / Accepted: 7 January 2019 / Published: 8 January 2019
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Abstract

The high-proportion of renewable energies is gradually becoming one of the main power supply sources and bringing strong uncertainties to the power grid. In this paper, a sample entropy (SampEn) based net load tracing dispatch strategy with a specific thermal generating mode is proposed. In this strategy, renewable energies are fully and preferentially consumed by electric loads, turned to net loads, to maximize the utilization of renewable energies. SampEn theory is utilized to evaluate the complexity of net load time series, based on which, the traditional power generators trace the complexity of the net load flexibly. According to the SampEn, a specific generating model of thermal generators is determined and the cooperation between thermal generators and pumped storage is realized, aiming at reducing the ramp power of thermal generators and increasing the throughput of pumped storage. The experiment simulation is developed on the 10-unit test system. Results show that the ramping power of the thermal generators are reduced 43% and 13% in the two cases together with the throughput of pumped storage is increased 44% and 27% on the premise that the economy of the system is maintained and renewable energies are fully consumed. Therefore, the efficiency and reasonability of the proposed dispatch strategy are confirmed. View Full-Text
Keywords: load tracing; net load; power dispatch; renewable energy; sample entropy; time series load tracing; net load; power dispatch; renewable energy; sample entropy; time series
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Hu, S.; Peng, F.; Gao, Z.; Ding, C.; Sun, H.; Zhou, W. Sample Entropy Based Net Load Tracing Dispatch of New Energy Power System. Energies 2019, 12, 193.

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