Forecasting-based power ramp-rate control strategies for utility-scale PV systems

Chen, Xiaoyang, Yang, Du, Wen, Huiqing, Jiang, Lin, and Weidong, Xiao (2019) Forecasting-based power ramp-rate control strategies for utility-scale PV systems. IEEE Transactions on Industrial Electronics, 66 (3). pp. 1862-1871.

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Passing cloud results in rapid changes of irradiance. The intermittency of photovoltaic (PV) power output has drawn serious concern especially for utility-scale PV system. Consequently, power ramp-rate control (PRRC) has been introduced to avoid significant PV power fluctuations. PRRC is usually implemented either by curtailing active power output or implementing energy storage system (ESS). However, current active power curtailment cannot deal with the irradiance ramp-down fluctuations, and the high cost of the ESS is still hindering its extensive application. In this paper, two innovative PRRC strategies are presented, which utilize the short-term forecasting. The first solution does not require any ESS, during the power ramp-down event, the PV generation will be curtailed before the actual shading occurs. The second solution requires only one-quarter of the energy capacity of the conventional ESS control strategy. To provide the PV generation forecasts, a dynamic model based on spatio-temporal theory is formulated. The effectiveness of the proposed forecasting model and control strategies have been verified through experiment and case studies.

Item ID: 57921
Item Type: Article (Research - C1)
ISSN: 1557-9948
Keywords: forecasting; cloud computing; predictive models; power generation; heuristic algorithms; energy storage; power system stability
Copyright Information: Copyright © 2018 IEEE.
Funders: Xi’an Jiaotong-Liverpool University (XJTLU), Jiangsu University (JU)
Projects and Grants: JU Natural Science Research Programme, (XJTLU) Research Development Fund
Date Deposited: 11 Apr 2019 04:46
FoR Codes: 40 ENGINEERING > 4008 Electrical engineering > 400803 Electrical energy generation (incl. renewables, excl. photovoltaics) @ 100%
SEO Codes: 85 ENERGY > 8505 Renewable Energy > 850504 Solar-Photovoltaic Energy @ 100%
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