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Electronics 2019, 8(1), 9; https://doi.org/10.3390/electronics8010009

Operation Flexibility Evaluation and Its Application to Optimal Planning of Bundled Wind-Thermal-Storage Generation System

1
School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
2
State Grid Zhejiang Changxing Country Power Supply Co., Ltd., Changxing 313100, China
*
Author to whom correspondence should be addressed.
Received: 13 November 2018 / Revised: 29 November 2018 / Accepted: 17 December 2018 / Published: 21 December 2018
(This article belongs to the Special Issue Beyond Smart Grid: Power Quality, Reliability and Security Challenges)
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Abstract

The growing penetration of wind power in a power system brings great challenges to system operation flexibility. For generation planning in presence of high wind power penetration, it is essential to take the operation flexibility of the system into account. Firstly, this paper developed the system operation flexibility metrics through considering the flexibility contribution of thermal generating units (TGUs) by operational state transition. Secondly, a planning model for the bundled wind-thermal-storage generation system (BWTSGS) that considers the operation flexibility constraints is proposed. The planning model is used to determine the power and energy rating of an energy storage system (ESS) as well as the type and number of TGUs. A daily scheduling simulation model of a BWTSGS is proposed to calculate the operation cost for the planning model and consider the sequential operation characteristics of the BWTSGS. Further, in order to accelerate the computation, a wind power sequential clustering technique based on the discrete Fourier transform (DFT) method is developed for improving the computational efficiency. Case studies have been conducted on a 1000-MW wind farm to demonstrate the validity and effectiveness of the proposed model. View Full-Text
Keywords: operation flexibility; wind-thermal generation; energy storage system; generation planning; scheduling simulation operation flexibility; wind-thermal generation; energy storage system; generation planning; scheduling simulation
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Ma, Y.; Yang, H.; Zhang, D.; Ni, Q. Operation Flexibility Evaluation and Its Application to Optimal Planning of Bundled Wind-Thermal-Storage Generation System. Electronics 2019, 8, 9.

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