Voltage regulation by grid connected PV-STATCOM

The environmental protection aspect promoted the use of renewable energies at a faster rate over the last decade. Among all the renewable energy sources one of the most popular one is solar energy source. The application of these sources to the grid requires additional compensating devices for mitigate the power quality problems and ensure voltage stability. The flexible AC transmission system includes various compensating devices. This paper deals with the utilization of solar PV farm inverter as a static compensator (STATCOM) to regulate voltage at the point of connection which improves the stability both during day and night time. The solar PV farm normally generates real power during the day but remains inactive at the night time. The proposed PV solar system working as a STATCOM is known as PV-STATCOM. This scheme uses total capacity of inverter during night time and that remaining after real power production during day for carrying out various STATCOM operations. The entire system modeling and analysis are done on a single machine system having midpoint connected PV- STATCOM using MATLAB/SIMULINK.

[1]  L.G.B. Rolim,et al.  Control strategy for grid-connected DC-AC converters with load power factor correction , 1998 .

[2]  M. Vitelli,et al.  Optimization of perturb and observe maximum power point tracking method , 2005, IEEE Transactions on Power Electronics.

[3]  K. Clark,et al.  Grid support functions implemented in utility-scale PV systems , 2010, IEEE PES T&D 2010.

[4]  R. K. Varma,et al.  Novel nighttime application of PV solar farms as STATCOM (PV-STATCOM) , 2012, 2012 IEEE Power and Energy Society General Meeting.

[5]  A.M. Sharaf,et al.  Novel controllers for the 48-pulse VSC STATCOM and SSSC for voltage regulation and reactive power compensation , 2005, IEEE Transactions on Power Systems.

[6]  Moulay Fatima,et al.  A detailed modeling of photovoltaic module using MATLAB , 2014 .

[7]  R.K. Varma,et al.  Nighttime Application of PV Solar Farm as STATCOM to Regulate Grid Voltage , 2009, IEEE Transactions on Energy Conversion.

[8]  Seong-Ryong Lee,et al.  A Grid-Connected Photovoltaic System with Direct Coupled Power Quality Control , 2006, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[9]  Chee Wei Tan,et al.  A study of maximum power point tracking algorithms for stand-alone Photovoltaic Systems , 2011, 2011 IEEE Applied Power Electronics Colloquium (IAPEC).

[10]  Y. H. Song,et al.  Available transfer capability enhancement using FACTS devices , 2003 .

[11]  Hong Shen,et al.  Study on integration and transmission of large scale wind power in JiuQuan area Gansu Province China , 2009, 2009 CIGRE/IEEE PES Joint Symposium Integration of Wide-Scale Renewable Resources Into the Power Delivery System.