Power Sharing Strategy for Photovoltaic based Distributed Generators Operating in Parallel

• Autorzy: Patel U. N. , Patel Hiren H.

Identyfikatory

DOI

10.22149/teee.v1i4.55

• Języki publikacji: EN

Abstrakty

EN

In many countries, the grid-code or standards do not allow the Photovoltaic (PV) inverters to exchange reactive power with the grid. Recently, some countries have relaxed the standards. Hence, capacity of the inverters to control reactive power must be utilized. However, the reactive power that a PV inverter can supply is constrained by the maximum power that a PV array generates and changes with the environmental conditions. A reactive power sharing algorithm is proposed that not only ensures proper distribution of reactive power amongst the inverters, but also ensures that the maximum power generated by PV is supplied to the grid. In case of identical PV inverters, the algorithm operates all inverters at nearly equal apparent power leading to nearly equal percentage utilization of the inverters, thereby achieving uniform heating of the similar devices of the inverters. The algorithms are further investigated for power sharing amongst PV inverters of unequal ratings. It is highlighted that the proposed algorithm results into the least change in the utilization factor of a PV inverter, whose power changes due to the change in environmental conditions. The effectiveness of the algorithm over other algorithms in sharing power amongst inverters is displayed through MATLAB/Simulink simulations.

Słowa kluczowe

EN

photovoltaic; reactive power; power sharing

• Wydawca: EEEIC International Publishing
• Czasopismo: Transactions on Environment and Electrical Engineering
• Rocznik: 2016
• Tom: Vol. 1, No. 4
• Strony: 1--9
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Patel U. N.

• Department of Electrical Engineering, C. K. Pithawala College of Engineering and Technology, Surat, India

autor

Patel Hiren H.

• Department of Electrical Engineering, Sarvajanik College of Engineering & Technology, Surat, India

Bibliografia

• [1] Y. Huang, F. Z. Peng, J. Wang and D. Yoo “Survey of power conditioning system for PV power generation, ” Power Electronics Specialist Conference, PESC 2006, pp.1-6, June 2006.
• [2] Y. Riffonneau, S. Bacha, F. Barruel, and S. Ploix “Optimal power flow management for grid connected PV systems with batteries” IEEE Trans. Sustainable energy, vol. 2, no. 3, pp.309-320 July 2011.
• [3] R. H. Lasseter and P. Paigi, “Microgrid: A conceptual solution,” presented at the IEEE Power Electron. Spec. Conf. Aachen, Germany, 2004.
• [4] N. Eghtedarpour and E. Farjah, “Power control and management ina hybrid AC/DC microgrid,” IEEE Trans. Smart Grid, vol. 5, no. 3, pp. 1494-1505, May 2014.
• [5] C.T. Lee, C.C. Chu, and P.T. Cheng, “A new droop control method for the autonomous operation of distributed energy resource s interface converters,” IEEE Trans. Power Electron., vol. 28, no. 4, pp. 1980-1993, April 2013.
• [6] Q. Zhong, “Robust Droop Controller for Accurate Proportional Load Sharing Among Inverters Operated in Parallel,” IEEE Trans. Ind. Electronics, vol. 60, no. 4, pp. 3747-3459, April 2013.
• [7] I. U. Nutkani, P. C. Loh, and F. Blaabjerg, “Droop scheme with considering of operating cost,” IEEE Trans. Power Electron., vol. 29, no. 3,pp. 1047-1052, March 2014.
• [8] A. Bidram and A. Davoudi, “Hierarchical structure of microgrids control system,” IEEE Trans. Smart Grid, vol. 3, no. 4, pp. 1963-1976, December 2012.
• [9] J. He, and Y Li” An accurate reactive power sharing control strategy for DG units in a microgrid” 8th International Conference on Power Electronics - ECCE Asia,the Shilla Jeju, Korea. May 30- June 3, 2011.
• [10] A. Milczarek, M. Malinowski and J. M. Guerrero ” Reactive power management in islanded microgrid-proportional power sharing in hierarchical droop control” IEEE Trans. Smart grid, vol. 6, no. 4, pp. 1631-1638, July 2015.
• [11] K. Turitsyn, PetrSulc , S. Backhaus, and M. Chertkov ” Options for control of reactive power by distributed photovoltaic generators” Proceedings of the IEEE, vol. 99, No. 6,pp 1063-1073, June 2011.
• [12] F. Olivier, P. Aristidou, D. Ernst, and T. V. Cutsem, ”Active management of low-voltage networks for mitigating over voltages due to photovoltaic units” IEEE Trans. Smart grid, vol. 7, NO. 2, pp. 926-93, March 2016.
• [13] A. Micallef M. Apap, J. M. Guerrero, and J. C. Vasquez, ” Reactive power sharing and voltage harmonic distortion compensation of droop controlled single phase islanded microgrids” IEEE Trans. Smart grid, vol. 5, no. 3, pp. 1149-1158, May 2014.
• [14] S. Duan, Y. Meng, J. Xiong, Y. Kang and J. Chen. “Parallel operationc techqnique of voltage source inverters in UPS,” IEEE International Conference on Power Electronics and Drive Systems, Hong Kong, 883-887, PEDS’99.
• [15] Z.Wang. K.M.,Passino, J.Wang, ”Optimal reactive power allocation in large scale grid connected photovoltaic system”, Journal of optimization theory and application, November 2015.
• [16] A. Micallef, M. Apap and C. SpiteriStaines, J. M. Guerrero Zapata” Secondary control for reactive power sharing and voltage amplitude restoration in droop-controlled islanded microGrids ” 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG) 2012.
• [17] T. L. Vandoorn, B. Renders, L. Degroote, B. Meersman, and L. Vandevelde, “Controllable harmonie current sharing in islanded microgrids: DG units with programmable resistive behavior toward harmonics, ”IEEE Trans. Power Del., vol. 27, no. 3, pp. 1405-1414,July 2012.
• [18] Adhikari and Fangxing Li, “Coordinated V-f and P-Q control of solar photovoltaic generators with MPPT and battery storage in microgrids” IEEE trans. on smart grid, vol. 5, no. 3,pp 1270-1281,May 2014.
• [19] H. Mahmood,, D. Michaelson, and J. Jiang, “Accurate reactive power sharing in an islanded microgrid using adaptive virtual impedances” IEEE Tran. Power electron.vol. 30, no. 3, pp. 1605-1617,March 2015.
• [20] J. W. Smith, W. Sunderman, R. Dugan, Brian Seal, “Smart inverter Volt/Var control functions for high penetration of PV on distribution Systems “Power system conference and Exposition (PACE) 2011.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).