2009, a novel patented control paradigm of solar PV farms was developed by this book’s author, whereby solar PV farms can be operated in nighttime as a STATCOM with full inverter capacity and during daytime with inverter capacity remaining after active power generation, for providing various grid support functions [35, 92, 97]. This new control of solar PV system as STATCOM was named PV‐STATCOM [100]. In 2013, an enhanced patented control was developed whereby solar PV farms can operate as a STATCOM with full inverter capacity at any time in the day during periods of system need. Different applications of PV‐STATCOM for providing benefits to transmission and distribution systems, including its first‐in Canada field demonstration in 2016, are described in subsequent chapters.
1.4 Conclusions
This chapter illustrates the concepts of control of reactive power and active power and their corresponding impacts on the grid. This forms the basis of the different smart inverter functions from solar PV inverters, which will be described in the book. The various issues and challenges of high penetration of solar PV systems both in distribution and bulk power systems, are described. Finally, the early‐stage evolution of smart inverter technology is presented.
References
1 1 International Renewable Energy Agency (IRENA) (2019). Global Energy Transformation – A Roadmap to 2050. International Renewable Energy Agency (IRENA) Report.
2 2 Tan, J., Zhang, Y., You, S., Liu, Y., and Liu, Y. (2018). Frequency response study of U.S. Western interconnection under extra‐high photovoltaic generation penetrations. In Proc. 2018 IEEE Power & Energy Society General Meeting, 1–5.
3 3 TenneT TSO GmbH (2020). The Massive InteGRATion of Power Electronic Devices (MIGRATE). Bayreuth, Germany, Technical Brief.
4 4 CEATI International Inc. (2017). Mitigation of the Negative Impacts of Solar and Wind DG Connections in Distribution Systems. Montreal, QC: CEATI Rep. No. T164700 #50/134.
5 5 Moeini, A. and Kamwa, I. (2016). Analytical concepts for reactive power based primary frequency control in power systems. IEEE Transactions on Power Systems 31: 4217–4230.
6 6 Farrokhabadi, M., Cañizares, C.A., and Bhattacharya, K. (2017). Frequency control in isolated/islanded microgrids through voltage regulation. IEEE Transactions on Smart Grid 8: 1185–1194.
7 7 Carvalho, P.M.S., Correia, P.F., and Ferreira, L.A.F.M. (2008). Distributed reactive power generation control for voltage rise mitigation in distribution networks. IEEE Transactions on Power Systems 23: 766–772.
8 8 Eto, J., Undrill, J., Mackin, P. et al. (2010). Use of a Frequency Response Metric to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation. Berkeley, CA: Lawrence Berkeley National Laboratory Rep. No. LBNL‐4142E.
9 9 NERC (2020). Fast Frequency Response Concepts and Bulk Power System Reliability Needs. Atlanta, GA: NERC NERC Inverter‐Based Resource Performance Task Force (IRPTF) White Paper.
10 10 NREL (2013). Variable Renewable Generation can Provide Balancing Control to the Electric Power System. Denver, CO: NREL Rep. NREL/FS‐5500‐57820.
11 11 EPRI (2019). Implications of Reduced Inertia Levels on the Electricity System. EPRI, Palo Alto, CA Rep. No. 3002015132.
12 12 EPRI (2019). Implications of Reduced Inertia Levels on the Electricity System. EPRI, Palo Alto, CA, USA, Techn. Update Rep. 3002014970.
13 13 EPRI (2019). Meeting the Challenges of Declining System Inertia. EPRI, Palo Alto, CA, USA, White Paper.
14 14 Eto, J.H., Undrill, J., Mackin, P., and Ellis, J. (2018). Frequency Control Requirements for Reliable Interconnection Frequency Response. Berkeley, CA: Lawrence Berkeley National Laboratory Rep. No. LBNL‐2001103.
15 15 Miller, N., Lew, D., Piwko, R. et al. (2017). Technology capabilities for fast frequency response. Report prepared by GE Energy Consulting for Australian Energy Market Operator, Schenectady, NY, USA.
16 16 IEEE (2018). Impact of Inverter Based Generation on Bulk Power System Dynamics and Short‐Circuit Performance. IEEE/NERC Task Force on Short‐Circuit and System Performance Impact of Inverter Based Generation, New York, NY, USA, IEEE PES Techn. Report. PES‐TR68.
17 17 AEMO (2017). Fast frequency response in the NEM‐Working paper. Australian Energy Market Operator, Australia. Report.
18 18 International Energy Agency (2014). High Penetration of PV in Local Distribution Grids: Subtask 2: Case Study Collection. International Energy Agency PVPS Program, Rep. IEA PVPS T14‐02.
19 19 Stetz, T., Marten, F., and Braun, M. (2013). Improved low voltage grid‐integration of photovoltaic systems in Germany. IEEE Transactions on Sustainable Energy 4: 534–542.
20 20 Walling, R.A., Saint, R., Dugan, R.C. et al. (2008). Summary of distributed resources impact on power delivery systems. IEEE Transactions on Power Delivery 23: 1636–1644.
21 21 Katiraei, F. and Aguero, J.R. (2011). Solar PV integration challenges. IEEE Power and Energy Magazine 9: 62–71.
22 22 Coster, E.J., Myrzik, J.M.A., Kruimer, B., and Kling, W.L. (2011). Integration issues of distributed generation in distribution grids. Proceedings of the IEEE 99: 28–39.
23 23 Katiraei, F., Sun, C., and Enayati, B. (2015). No inverter left behind: protection, controls, and testing for high penetrations of PV inverters on distribution systems. IEEE Power and Energy Magazine 13: 43–49.
24 24 Cheng, D., Mather, B.A., Seguin, R. et al. (2016). Photovoltaic (PV) impact assessment for very high penetration levels. IEEE Journal of Photovoltaics 6: 295–300.
25 25 Obi, M. and Bass, R. (2016). Trends and challenges of grid‐connected photovoltaic systems – a review. Renewable and Sustainable Energy Reviews 58: 1082–1094.
26 26 Bravo, R.J., Salas, R., Bialek, T., and Sun, C. (2015). Distributed energy resources challenges for utilities. In Proc. 2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC), 1–5.
27 27 Seguin, R., Woyak, J., Costyk, D., Hambrick, J., and Mather, B. (2016). High‐Penetration PV Integration Handbook for Distribution Engineers. NREL, Golden, CO, USA, Techn. Rep. NREL/TP‐5D00‐63114.
28 28 Masters, C.L. (2002). Voltage rise: the big issue when connecting embedded generation to long 11 kV overhead lines. Power Engineering Journal 16: 5–12.
29 29 Zandt, D.V. (2019). Applications of DER advanced functions and settings. In Proc. ITWG Meeting, 26 June.
30 30 (2016). Electric power systems and equipment—voltage ratings (60 Hz). ANSI C84.1‐2016 Standard.
31 31 Hingorani, N.G. and Gyugyi, L. (1999). Understanding FACTS. Piscataway, NJ: IEEE Press.
32 32 Mathur, R.M. and Varma, R.K. (2002). Thyristor‐Based FACTS Controllers for Electrical Transmission Systems. New York: Wiley‐IEEE Press.
33 33 EPRI (2015). YouTube Video – EPRI High Penetration Solar Impacts. EPRI.
34 34 EPRI (2015). YouTube Video – Solar PV Impacts to Distribution Feeder. EPRI.
35 35 Varma, R.K., Rahman, S.A., Mahendra, A.C., Seethapathy, R., and Vanderheide, T. (2012). Novel nighttime application of PV solar farms as STATCOM (PV‐STATCOM). In Proc. 2012 IEEE Power & Energy Society General Meeting, 1–8.
36 36 EPRI (2016). Common Functions for Smart Inverters, 4e. EPRI, Palo Alto, CA. Techn. Rep. 3002008217.
37 37 Chen, L., Qi, S., and Li, H. (2012). Improved adaptive voltage controller for active distribution network operation with distributed generation. In Proc. 47th International Universities Power Engineering Conference (UPEC ‘12).
38 38 Foster, S., Xu, L., and Fox, B. (2006). Grid integration of wind farms using SVC and STATCOM. In Proc. 41st International Universities Power Engineering Conference, 157–161.
39 39 Ronner, B., Maibach, P., and Thurnherr, T. (2009). Operational experiences of STATCOMs for wind parks. IET Renewable