Real-time photovoltaic plant maximum power point estimation for use in grid frequency stabilization

As the amount of solar photovoltaic (PV) generation connected to electric grids grows, PV displaces conventional rotating machines whose inertia stabilizes the grid frequency on fast time scales. Therefore, especially in low-inertia grids, it may be desirable for PV inverters to control their output power to emulate the inertial response of conventional generators. This paper presents and validates through dynamic simulation a method of providing primary frequency regulation and inertia-like response from PV without energy storage by operating somewhat below maximum power. A novel method of ensuring sufficient power reserve in real time using measured irradiance and temperature is presented and validated against experimental data.

[1]  Takashi Hiyama,et al.  Neural network based estimation of maximum power generation from PV module using environmental information , 1997 .

[2]  Joseph H. Eto,et al.  Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation , 2011 .

[3]  Thomas Basso,et al.  A power hardware-in-the-loop framework for advanced grid-interactive inverter testing , 2015, 2015 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT).

[4]  M. O'Malley,et al.  Market Designs for the Primary Frequency Response Ancillary Service—Part II: Case Studies , 2014, IEEE Transactions on Power Systems.

[5]  Vahan Gevorgian,et al.  User Guide for PV Dynamic Model Simulation Written on PSCAD Platform , 2014 .

[6]  Dragan Maksimovic,et al.  Active power control of photovoltaic power systems , 2013, 2013 1st IEEE Conference on Technologies for Sustainability (SusTech).

[7]  J. Kleissl,et al.  Aggregate solar variability , 2012, 2012 IEEE Power and Energy Society General Meeting.

[8]  Joshua White Traube.  Predicting the Effects of Short-Term Photovoltaic Variability on Power System Frequency for Systems with Integrated Energy Storage , 2013 .

[9]  Andrew D. Mills,et al.  Implications of geographic diversity for short-term variability and predictability of solar power , 2011, 2011 IEEE Power and Energy Society General Meeting.

[10]  K. Faez,et al.  Maximum Power Point Estimation for Photovoltaic Systems Using Neural Networks , 2007, 2007 IEEE International Conference on Control and Automation.

[11]  J. A. Carrasco,et al.  Real time estimation of photovoltaic modules characteristics and its application to maximum power point operation , 2007 .

[12]  S. Santoso,et al.  Understanding inertial and frequency response of wind power plants , 2012, 2012 IEEE Power Electronics and Machines in Wind Applications.

[13]  Prudence W. H. Wong,et al.  DEM: Direct Estimation Method for Photovoltaic Maximum Power Point Tracking , 2013, ITQM.

[14]  J. A. del Cueto,et al.  Comparison of Degradation Rates of Individual Modules Held at Maximum Power , 2006, 2006 IEEE 4th World Conference on Photovoltaic Energy Conference.

[15]  Joe-Air Jiang,et al.  High-accuracy maximum power point estimation for photovoltaic arrays , 2011 .

[16]  Dionisio Ramirez,et al.  Accurate and fast convergence method for parameter estimation of PV generators based on three main points of the I–V curve , 2011 .

[17]  S. Mishra,et al.  Deriving inertial response from a non-inertial PV system for frequency regulation , 2012, 2012 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES).

[18]  H. Asano,et al.  Influence of photovoltaic power generation on required capacity for load frequency control , 1996 .

[19]  Bidyadhar Subudhi,et al.  A comparative study on solar array parameter extraction methods , 2012 .

[20]  J. D. McCalley,et al.  Influence of renewable integration on frequency dynamics , 2012, 2012 IEEE Power and Energy Society General Meeting.

[21]  P. Kundur,et al.  Power system stability and control , 1994 .

[22]  Luis Marroyo,et al.  From irradiance to output power fluctuations: the PV plant as a low pass filter , 2011 .

[23]  Marcelo Gradella Villalva,et al.  Comprehensive Approach to Modeling and Simulation of Photovoltaic Arrays , 2009, IEEE Transactions on Power Electronics.

[24]  Chul-Hwan Kim,et al.  A Frequency-Control Approach by Photovoltaic Generator in a PV–Diesel Hybrid Power System , 2011, IEEE Transactions on Energy Conversion.

[25]  G. Kumar,et al.  Geometrical prediction of maximum power point for photovoltaics , 2014 .