Document Type : Review Article

Author

1 Smart Microgrid Research Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran.

2 Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran.

Abstract

Renewable energy provides twenty percent of electricity generation worldwide. Hydroelectric power is the cheapest way to generate electricity today. It is a renewable source of energy and provides almost one-fifth of electricity in the world. Also, it generates electricity using a renewable natural resource and accounting for six percent of worldwide energy supply or about fifteen percent of the world’s electricity. Hydropower is produced in more than 150 countries. Hydropower plant producers provide energy due to moving or falling water. This paper presents and discusses studies on hydroelectric power plant fields, which have been carried out by different investigators. This work aims to study and provide an overview of hydroelectric power plants such as applications, control, operation, modeling and environmental impacts. Also, the hybrid power and efficiency of the hydroelectric power plants has been investigated. The applications of a flexible AC transmission system (FACTS) controller in the power system with the hydroelectric power plants are presented.

Keywords

Main Subjects

1.     Hanmandlu, M. and Goyal, H., "Proposing a new advanced control technique for micro hydro power plants", Electrical Power and Energy Systems, Vol. 30, (2008), 272-282. (https://doi.org/10.1016/j.ijepes.2007.07.010)
2.     Shahgholian, Gh. and Izadpanahi, N., "Improving the performance of wind turbine equipped with DFIG using STATCOM based on input-output feedback linearization controller", Energy Equipment and Systems, Vol. 4, No. 1, (June 2016), 65-79. (https://doi.org/10.22059/EES.2016.20128)
3.     Fang, H., Chen, L. and Shen, Z., "Application of an improved PSO algorithm to optimal tuning of PID gains for water turbine governor", Energy Conversion and Management, Vol. 52, No. 4, (April 2011), 1763-1770. (https://doi.org/10.1016/j.enconman.2010.11.005)
4.     Shahgholian, Gh., "Analysis and simulation of dynamic performance for DFIG-based wind farm connected to a distrubition system", Energy Equipment and Systems, Vol. 6, No. 2, (June 2018), 117-130. (https://doi.org/10.22059/EES.2018. 315 31).
5.     Kumar, D. and Chatterjee, K., "A review of conventional and advanced MPPT algorithms for wind energy systems", Renewable and Sustainable Energy Reviews, Vol. 55, (March 2016), 957-970. (https://doi.org/10.1016/j.rser.2015.11.013).
7.     Irvine, S.J.C. and Rowlands-Jones, R.L., "Potential for further reduction in the embodied carbon in PV solar energy systems", IET Renewable Power Generation, Vol. 10, No. 4, (March 2016), 428-433. (https://doi.org/10.1049/iet-rpg.2015.0374).
8.     Joselin Herbert, G.M., Iniyan, S., Sreevalsan, E. and Rajapandian, S., "A review of wind energy technologies", Renewable and Sustainable Energy Reviews, Vol. 11, No. 6, (August 2007), 1117-1145. (https://doi.org/10.1016/j.rser.2005.08.004).
9.     Vilanova, M.R.N. and Balestieri, J.A.P., "Modeling of hydraulic and energy efficiency indicators for water supply systems", Renewable and Sustainable Energy Reviews, Vol. 48, (2015), 540-557. (https://doi.org/10.1016/j.rser.2015.04.024).
10.   Shahgholian, Gh., "Power system stabilizer application for load frequency control in hydro-electric power plant", International Journal of Theoretical and Applied Mathematics, Vol. 3, No. 4, (August 2017), 148-157. (doi: 10.11648/j.ijtam.20170304.14).
11.   Faiz, J., Hakimi-Tehrani, A. and Shahgholian, Gh., "Current control techniques for wind turbines: A review", Journal of Electromotion, Vol. 19, No. 3-4, (July/Dec. 2012), 151-168.
12.   Liu, Y., Xin, H., Wang, Z. and Gan, D., "Control of virtual power plant in microgrids: a coordinated approach based on photovoltaic systems and controllable loads", IET Generation, Transmission and Distribution, Vol. 9, No. 10, (June 2015), 921-928. https://doi.org/10.1049/iet-gtd.2015.0392
13.   Njiri, J.G. and Söffker, D., "State-of-the-art in wind turbine control: Trends and challenges", Renewable and Sustainable Energy Reviews, Vol. 60, (July 2016), 377-393. (https://doi.org/10.1016/j.rser.2016.01.110).
15.   Zhaohui, L. and Malik, O.P., "An orthogonal test approach based control parameter optimization and its application to a hydro-turbine governor", IEEE Transactions on Energy Conversion, Vol. 12, No. 4, (December 1997), 388-393. (https://doi.org/10.1109/60.638956).
18.   Chatthaworn, R. and Chaitusaney, S., "Improving method of robust transmission network expansion planning considering intermittent renewable energy generation and loads", IET Generation, Transmission and Distribution, Vol. 9, No. 13, (Sep. 2015), 1621-1627. (https://doi.org/10.1049/iet-gtd.2015.0363).
19.   Garcia, F.J., Uemori, M.K.I., Rocha Echeverria, J.J. and Costa Bortoni, E.d., "Design requirements of generators applied to low-head hydro power plants", IEEE Transactions on Energy Conversion, Vol. 30, No. 4, (June 2015), 1630-1638. (https://doi.org/10.1109/TEC.2015.2434617).
20.  Yin, X., Lin, Y. and Li, W., "Operating modes and control strategy for megawatt-scale hydro-viscous transmission-based continuously variable speed wind turbines", IEEE Transactions on Sustainable Energy, Vol. 6, No. 4, (October 2015), 1553-1564. (https://doi.org/10.1109/TSTE.2015.2455872).
21.  Yu, X., Zhang, J., Fan, C. and Chen, S., "Stability analysis of governor-turbine-hydraulic system by state space method and graph theory", Energy, Vol. 114, (Nov. 2016), 613-622. (https://doi.org/10.1016/j.energy.2016.07.164).
22.   Jafari, A. and Shahgholian, Gh., "Analysis and simulation of a sliding mode controller for mechanical part of a doubly-fed induction generator based wind turbine", IET Generation, Transmission and Distribution, Vol. 11, No. 10, (July 2017), 2677-2688. (https://doi.org/10.1049/iet-gtd.2016.1969).
23.   Chen, D., Ding, C., Ma, X., Yuan, P. and Ba, D., "Nonlinear dynamical analysis of hydro-turbine governing system with a surge tank", Appllied Mathematical Modelling, Vol. 37, No. 14-15, (2013), 7611-7623. (https://doi.org/10.1016/j.apm.2013.01.047).
25.   Ajibola, O.O.E., Ajala, O.S., Akanmu, J.O. and Balogun, O.J., "Improvement of hydroelectric power generation using pumped storage system", Nigerian Journal of Technology, Vol. 37, No. 1, (Jan. 2018), 191-199. (https://10.4314/njt.v37i1.25).
26    Singh, R.R., Chelliah, T.R. and Agarwal, P., "Power electronics in hydro electric energy systems– A review", Renewable and Sustainable Energy Reviews, Vol. 32, (April 2014), 944-959. (https://doi.org/10.1016/j.rser.2014.01.041).
29.   Souza, O.H., Barbieri, N. and Santos, A.H.M., "Study of hydraulic transients in hydropower plants through simulation of nonlinear model of penst ock and hydraulic turbine model", IEEE Transactions on Power Systems, Vol. 14, No. 4, (Nov. 1999), 1269-1272. (https://doi.org/10.1109/59.80 1883).
30.   Martínez-Lucas, G., Sarasúa, J.I., Sánchez-Fernández, J.Á. and Wilhelmi, J.R., "Power-frequency control of hydropower plants with long penstocks in isolated systems with wind generation", Renewable Energy, Vol. 83, (Nov. 2015), 245-255. (https://doi.org/10.1016/j.renene. 2015.04.032).
31.   Oliveira, E.J., Honorio, L.M., Anzai, A.H., Oliveira, L.W. and Costa, E.B., "Optimal transient droop compensator and PID tuning for load frequency control in hydro power systems", International Journal of Electrical Power and Energy Systems, Vol. 68, (June 2015), 345-355. (https://doi.org/10.1016/j.ijepes.2014.12.071).
32.   Doolla, S. and Bhatti, T.S., "Automatic generation control of an isolated small-hydro power plant", Electric Power Systems Research, Vol. 76, (2006), 889-896. (https://doi.org/10.1016/j.epsr.2005.11.002)
33.   Liu, X. and Liu, C., "Eigenanalysis of oscillatory instability of a hydropower plant including water conduit dynamics", IEEE Transactions on Power Systems, Vol. 22, No. 2, (May 2007), 675-681. (https://doi.org/10.1109/TPWRS.2007 .895156).
34.   Brezovec, M., Kuzle, I. and Tomisa, T., "Nonlinear digital simulation model of hydroelectric power unit with Kaplan turbine", IEEE Transactions on Energy Conversion, Vol. 21, No. 1, (March 2006), 235-241. (https://doi.org/10.1109/TEC.2005.847963).
35.   Bhatt, P., Roy, R. and Ghoshal, S.P., "Comparative performance evaluation of SMES–SMES, TCPS–SMES and SSSC–SMES controllers in automatic generation control for a two-area hydro–hydro system", Electrical Power and Energy Systems, Vol. 33, No. 10, (Dec. 2011), 1585-1597. (https://doi.org/10.1016/j.ijepes.2010.12.015).
37.   Djukanovic, M.B., Dobrijevic, D.J., Calovic, M.S., Novicevic, M. and Sobajic, D.J., "Coordinated stabilizing control for the exciter and governor loops using fuzzy set theory and neural nets", International Journal of Electrical Power and Energy Systems, Vol. 19, No. 8, (Nov. 1997), 489-499. (https://doi.org/10.1016/S0142-0615(97)00020-3).
38.   Arnautović, D.B. and Džepčeski, D.D., "Suboptimal design of turbine governors for low head hydroturbines", Facta Universitatis-Series: Electronics and Energetics, Vol. 23, No. 2, (2010), 191-198. (https://doi.org/10.2298/FUEE1002191A).
39.   Karki, R., Hu, P. and Billinton, R., "Reliability evaluation considering wind and hydro power coordination", IEEE Transactions on Power Systems, Vol. 25, No. 2, (May 2010), 685-693. (https://doi.org/10.1109/TPWRS. 2009.2032758).
40.   Helseth, A., Gjelsvik, A., Mo, B. and Linnet, U., "A model for optimal scheduling of hydro thermal systems including pumped-storage and wind power", IETGeneration, Transmission and Distribution, Vol. 7, No. 12, (Dec. 2013), 1426-1434. (https://doi.org/10.1049/iet-gtd.2012.0639).
41.   Andrade, A.L. and Santos, M.A., "Hydroelectric plants environmental viability: Strategic environmental assessment application in Brazil", Renewable and Sustainable Energy Reviews, Vol. 52, (Dec. 2015), 1413-1423. (https://doi.org/10.1016/ j.rser.2015.07.152).
42.   Moya, D., Paredes, J. and Kaparaju, P., "Technical, financial, economic and environmental pre-feasibility study of geothermal power plants by RETScreen–Ecuador's case study", Renewable and Sustainable Energy Reviews, Vol. 92, (Sep. 2018), 628-637. (https://doi.org/10.1016/j.rser.2018.04.027).
43.   Rajagopal, V., Singh, B. and Kasal, G.K., "Electronic load controller with power quality improvement of isolated induction generator for small hydro power generation", IET Renewable Power Generation, Vol. 5, No. 2, (March 2011), 202-213. (https://doi.org/10.1049/iet-rpg.2010.0081).
44.   Doolla, S. and Bhatti, T.S., "Load frequency control of an isolated small-hydro power plant with reduced dumped load", IEEE Transactions on Power Systems, Vol. 21, No. 4, (Nov. 2006), 1912-1919. (https://doi.org/10.1109/TPWRS.2006.881157).
45.   Hayes, B.P., Wilson, A., Webster, R. and Djokic, S.Z., "Comparison of two energy storage options for optimum balancing of wind farm power outputs",IET Generation, Transmission and Distribution, Vol. 10, No. 3, (March 2016), 832-839. (https://doi.org/10.1049/iet-gtd.2015.0486).
46.   Sarasúa, J.I., Pérez-Díaz, J.I., Wilhelmi, J.R. and Sánchez-Fernández, J.Á., "Dynamic response and governor tuning of a long penstock pumped-storage hydropower plant equipped with a pump-turbine and a doubly fed induction generator",Energy Conversion and Management, Vol. 106, (Dec. 2015), 151-164. (https://doi.org/10.1016/j.enconman.2015.09.030).
47.  Singh, V.K. and Singal, S.K., "Operation of hydro power plants-A review", Renewable and Sustainable Energy Reviews, Vol. 69, (March 2017), 610-619. (https://doi.org/10.1016/j.rser.2016.11.169).
48.   Mahdavian, M., Shahgholian, Gh., Janghorbani, M., Soltani, B. and Wattanapongsakorn, N., "Load frequency control in power system with hydro turbine under various conditions", Proceedings of the IEEE/ECTICON, Hua Hin, Thailand, (June 2015), 1-5. (https://doi.org/10.1109/ECTICon.2015.7206938).
49.   Elbatran, A.H., Yaakob, O.B., Ahmed, Y.M. and Shabara, H.M., "Operation, performance and economic analysis of low head micro-hydropower turbines for rural and remote areas: A review", Renewable and Sustainable Energy Reviews, Vol. 43, (March 2015), 40-50. (https://doi.org/10.1016/j.rser.2014.11. 045).
50.   Mukherjee, V. and Ghoshal, S.P., "Comparison of intelligent fuzzy based AGC coordinated PID controlled and PSS controlled AVR system", International Journal of Electrical Power and Energy Systems, Vol. 29, No. 9, (Nov. 2007), 679-689. (https://doi.org/10.1016/j.ijepes.2007.05.002).
51.   Beires, P., Vasconcelos, M.H., Moreira, C.L. and Peças Lopes, J.A., "Stability of autonomous powersystems with reversible hydro powerplants: A study case for large scale renewables integration", Electric Power Systems Research, Vol. 158, (May 2018), 1-14. (https://doi.org/10.1016/j.epsr.2017.12.028).
52.   Abdellatif, D., AbdelHady, R., Ibrahim, A.M. and El-Zahab, E.A., "Conditions for economic competitiveness of pumped storage hydroelectric power plants in Egypt", Renewables: Wind, Water, and Solar, Vol. 5, No. 2, (2018). (https://doi.org/10.1186/s40807-018-0048-1).
53.   Zhou, J., Palikhe, S. and Bhattarai, K.P., "Hydraulic optimization of double chamber surge tank using NSGA-II resham dhakal", Water, Vol. 12, No. 2, (Feb. 2020), 1-20. (https://doi.org/10.3390/w12020455).
54.   Kishor, N., Saini, R.P. and Singh, S.P., "A review on hydropowerplant models and control", Renewable and Sustainable Energy Reviews, Vol. 11, No. 5, (June 2007), 776-796. (https://doi.org/10.1016/j.rser.2005.06.003).
55.   Guo, W. and Zhu, D., "Setting condition of downstream surge tank of hydropower station with sloping ceiling tailrace tunnel", Chaos, Solitons and Fractals, Vol. 134, Article 109698, (May 2020). (https://doi.org/10.1016/j.chaos.2020.109698).
56.   Rezghi, A., Riasi, A. and Tazraei, P., "Multi-objective optimization of hydraulic transient condition in a pump-turbine hydropower considering the wicket-gates closing law and the surge tank position", Renewable Energy, Vol. 148, (April 2020), 478-491. (https://doi.org/10.1016/j.renene. 2019.10.054).
59.   Židonis, A. and Aggidis, G.A., "State of the art in numerical modelling of Pelton turbines", Renewable and Sustainable Energy Reviews, Vol. 45, (May 2015), 135-144. (https://doi.org/10.1016/j.rser.2015.01.037).
60.   Židonis, A., Benzon, D.S. and Aggidis, G.A., "Development of hydro impulse turbines and new opportunities", Renewable and Sustainable Energy Reviews, Vol. 51, (Nov. 2015), 1624-1635. (https://doi.org/10.1016/j.rser.2015.07.007).
61.   Fernandes, A.C. and Armandei, M., "Low-head hydropower extraction based on torsional galloping", Renewable Energy, Vol. 69, (Sep. 2014), 447-452. (https://doi.org/10.1016/j.renene.2014.03.057).
62.   Djukanovic, M., Novicevic, M., Dobrijevic, D., Babic, B., Sobajic, D.J. and Pao, Y.H., "Neural-net based coordinated stabilizing control for the exciter and governor loops of low head hydropower plants", IEEE Transactions on Energy Conversion, Vol. 10, No. 4, (Dec. 1995), 760-767. (https://doi.org/10.1109/60.475850).
63.   Zuo, Z., Liu, S., Sun, Y. and Wu, Y., "Pressure fluctuations in the vaneless space of high-head pump-turbines: A review", Renewable and Sustainable Energy Reviews, Vol. 41, (Jan. 2015), 965-974. (https://doi.org/10.1016/j.rser.2014.09.011).
64.   Thapa, B.S., Dahlhaug, O.G. and Thapa, B., "Sediment erosion in hydro turbines and its effect on the flow around guide vanes of Francis turbine", Renewable and Sustainable Energy Reviews, Vol. 49, (Sep. 2015), 1100-1113. (https://doi.org/10.1016/ j.rser.2015.04.178).
65.   Nagode, K. and Škrjanc, I., "Modelling and internal fuzzy model power control of a Francis water turbine", Energies, Vol. 7, (2014), 874-889. (https://doi.org/10.3390/en7020874).
66.   Kishor, N., Singh, S.P. and Raghuvanshi, A.S., "Dynamic simulations of hydro turbine and its state estimation based LQ control", Energy Conversion and Management, Vol. 47, No. 18-19, (Nov. 2006), 3119-3137. (https://doi.org/10.1016/j.enconman.2006.03.020).
67.   Schniter, P. and Wozniak, L., "Efficiency based optimal control of Kaplan Hydrogenertors", IEEE Transactions on Energy Conversion, Vol. 10, No. 2, (June 1995), 348-353. (https://doi.org/10.1109/60.391902).
68.   Kranjcic, D. and Stumberger, G., "Differential evolution-based identification of the nonlinear Kaplan turbine model", IEEE Transactions on Energy Conversion, Vol. 29, No. 1, (March 2014), 178-187. (https://doi.org/10.1109/TEC.2013.2292927).
69.  Zohbi, G.A., Hendrick, P., Renier, C. and Bouillard, P., "The contribution of wind-hydro pumped storage systems in meeting Lebanon's electricity demand", International Journal of Hydrogen Energy, Vol. 41, No. 17, (May 2016), 6996-7004. (https://doi.org/10.1016/j.ijhydene.2016.01.028).
70. IEEE Committee Report, "Hydraulic turbine and turbine control models for system dynamic studies", IEEE Transactions on Power, Vol. 7, No. 1, (Feb. 1992), 167-179. (https://doi.org/10.1109/59.141700).
71.   Akhrif, O., Okou, F.A., Dessaint, L.A. and Champagne, R., "Application of a multivariable feedback linearization scheme for rotor angle stability and voltage regulation of power systems", IEEE Transactions on Power Systems, Vol. 14, No. 2, (May 1999). (https://doi.org/10.1109/59.761889).
72.   Guo, W. and Yang, J., "Modeling and dynamic response control for primary frequency regulation of hydro-turbine governing system with surge tank", Renewable Energy, Vol. 121, (June 2018), 173-187. (https://doi.org/10.1016/j.renene.2018.01.022).
73.   Bao, H., Yang, J., Zhao, G., Zeng, W., Liu, Y. and Yang, W., "Condition of setting surge tanks in hydropower plants–A review", Renewable and Sustainable Energy Reviews, Vol. 81, Part 2, (January 2018), 2059-2070. (https://doi.org/10.1016/j.rser.2017.06.012).
74.   Peng, Z. and Guo, W., "Saturation characteristics for stability of hydro-turbine governing system with surge tank", Renewable Energy, Vol. 131, (Feb. 2019), 318-332. (https://doi.org/10.1016/j.renene.2018.07.054).
76.   Chen, D., Ding, C., Do, Y., Ma, X., Zhao, H. and Wang, Y., "Nonlinear dynamic analysis for a Francis hydro-turbine governing system and its control", Journal of the Franklin Institute, Vol. 351, No. 9, (Sep. 2014), 4596-4618. (https://doi.org/10.1016/j.jfranklin.2014.07.002).
77.   Fang, H., Chen, L., Dlakavu, N. and Shen, Z., "Basic modeling and simulation tool for analysis of hydraulic transients in hydroelectric power plants", IEEE Transactions on Energy Conversion, Vol. 23, No. 3, (June 2008), 834-841. (https://doi.org/10.1109/TEC.2008.921560).
78.   Gil-González, W., Garces, A. and Escobar, A., "Passivity-based control and stability analysis for hydro-turbine governing systems", Applied Mathematical Modelling, Vol. 68, (April 2019), 471-486. (https://doi.org/10.1016/j.apm.2018.11.045).
79.   Luqing, Y., Weidong, L., Zhaohui, L., Malik, O.P. and Hope, G.S., "An integral criterion for appraising the overall quality of a computer-based hydroturbine governing system", IEEE Transactions on Energy Conversion, Vol. 10, No. 2, (June 1995), 376-381. (https://doi.org/10.1109/60.391906).
80.   Li, C., Chang, L., Huang, Z., Liu, Y. and Zhang, N., "Parameter identification of a nonlinear model of hydraulic turbine governing system with an elastic water hammer based on a modified gravitational search algorithm", Engineering Applications of Artificial Intelligence, Vol. 50, (April 2016), 177-191. (https://doi.org/10.1016/j.engappai.2015.12.016).
81.   Chen, Z., Yuan, Y., Yuan, X., Huang, Y., Li, X. and Li, W., "Application of multi-objective controller to optimal tuning of PID gains for a hydraulic turbine regulating system using adaptive grid particle swam optimization", ISA Transactions, Vol. 56, (May 2015), 173-187. (https://doi.org/10.1016/j.isatra. 2014.11.003).
82.   Yang, J., Wang, M., Wang, C. and Guo, W., "Linear modeling and regulation quality analysis for hydro-turbine governing system with an open tailrace channel", Energies, Vol. 8, (2015), 11702-11717. (https://doi.org/10.3390/en81011702).
83.   Guo, W., Yang, J., Wang, M. and Lai, X., "Nonlinear modeling and stability analysis of hydro-turbine governing system with sloping ceiling tailrace tunnel under load disturbance", Energy Conversion and Management, Vol. 106, (Dec. 2015), 127-138. (https://doi.org/10.1016/j.enconman.2015.09.026).
84.   Li, C., Zhou, J., Xiao, J. and Xiao, H., "Hydraulic turbine governing system identification using T–S fuzzy model optimized by chaotic gravitational search algorithm", Engineering Applications of Artificial Intelligence, Vol. 26, No. 9, (Oct. 2013), 2073-2082. (https://doi.org/10.1016/j.engappai.2013.04.002).
85.   Jiang, C., Ma, Y. and Wang, C., "PID controller parameters optimization of hydro-turbine governing systems using deterministic-chaotic-mutation evolutionary programming (DCMEP)", Energy Conversion and Management, Vol. 47, No. 9-10, (June 2006), 1222-1230. (https://doi.org/10.1016/j.enconman.2005.07.009).
86.   Yuan, X., Chen, Z., Yuan, Y. and Huang, Y., "Design of fuzzy sliding mode controller for hydraulic turbine regulating system via input state feedback linearization method", Energy, Vol. 93, Part 1, (Dec. 2015), 173-187. (https://doi.org/10.1016/j.energy.2015.09.025).
87.   Malik, O.P. and Zeng, Y., "Design of a robust adaptive controller for a water turbine governing system", IEEE Transactions on Engrgy Conversion, Vol. 10, No. 2, (June 1995), 354-359. (https://doi.org/10.1109/60.391903).
88.   Li, J. and Chen, Q., "Nonlinear dynamical analysis of hydraulic turbine governing systems with nonelastic water hammer effect", Journal of Applied Mathematics, Vol. 2014, (June 2014). (https://doi.org/10.1155/2014/412578).
89.   Zhang, H., Chen, D., Wu, C. and Wang, X., "Dynamics analysis of the fast-slow hydro-turbine governing system with different time-scale coupling", Communications in Nonlinear Science and Numerical Simulation, Vol. 54, (Jan. 2018), 136-147. (https://doi.org/10.1016/j.cnsns. 2017.05.020).
90.   Chen, Z., Yuan, X., Ji, B., Wang, P. and Tian, H., "Design of a fractional order PID controller for hydraulic turbine regulating system using chaotic non-dominated sorting genetic algorithm II", Energy Conversion and Management, Vol. 84, (August 2014), 390-404. (https://doi.org/10.1016/j.enconman. 2014.04.052).
91.   Zhu, D. and Guo, W., "Setting condition of surge tank based on stability of hydro-turbine governing system considering nonlinear penstock head loss", International Journal of Electrical Power and Energy Systems, Vol. 113, (Dec. 2019), 372-382. (https://doi.org/10.1016/j.ijepes.2019.05.061).
92.   Yuan, X., Chen, Z., Yuan, Y., Huang, Y., Li, X. and Li, W., "Sliding mode controller of hydraulic generator regulating system based on the input/output feedback linearization method", Mathematics and Computers in Simulation, Vol. 119, (Jan. 2016), 18-34. (https://doi.org/10.1016/j.matcom.2015.08.020).
93.   Wang, F., Chen, D., Xu, B. and Zhang, H., "Nonlinear dynamics of a novel fractional-order Francis hydro-turbine governing system with time delay", Chaos, Solitons and Fractals, Vol. 91, (Oct. 2016), 329-338. (https://doi.org/10.1016/j. chaos.2016.06.018).
94.   Natarajan, K., "Robust PID controller design for hydroturbines", IEEE Transactions on Energy Conversion, Vol. 20, No. 3, (Sep. 2005), 661-667. (https://doi.org/10.1109/TEC.2005.845448).
95.   Chen, Z., Yuan, X., Tian, H. and Ji, B., "Improved gravitational search algorithm for parameter identification of water turbine regulation system", Energy Conversion and Manageement, Vol. 78, (Feb. 2014), 306-315. (https://doi.org/10.1016/j.enconman. 2013.10.060).
96.   Xu, B., Wang, F., Chen, D. and Zhang, H., "Hamiltonian modeling of multi-hydro-turbine governing systems with sharing common penstock and dynamic analyses under shock load", Energy Conversion and Management, Vol. 108, (Jan. 2016), 478-487. (https://doi.org/10.1016/j.enconman.2015.11.032).
97.   Li, C. and  Zhou, J., "Parameters identification of hydraulic turbine governing system using improved gravitational search algorithm", Energy Conversion and Management, Vol. 52, No. 1, (Jan. 2011), 374-381. (https://doi.org/10.1016/j.enconman. 2010.07.012).
98.   Xu, B., Chen, D., Zhang, H. and Wang, F., "Modeling and stability analysis of a fractional-order Francis hydro-turbine governing system", Chaos, Solitons and Fractals, Vol. 75, (June 2015), 50-61. (https://doi.org/10.1016/j.chaos.2015.01.025).
99.   Wang, M., Zhang, Y., Ji, T. and Wang, X., "Grey prediction control and extension assessment for turbine governing system", IET Generation, Transmission and Distribution, Vol. 10, No. 11, (Aug. 2016), 2601-2605. (https://doi.org/10.1049/iet-gtd.2015.1028).
100. Wencheng, G. and Jiandong, Y., "Stability performance for primary frequency regulation of hydro-turbine governing system with surge tank", Applied Mathematical Modelling, Vol. 54, (Feb. 2018), 446-466. (https://doi.org/10.1016/j.apm.2017.09.056).
101. Zhang, H., Chen, D., Xu, B. and Wang, F., "Nonlinear modeling and dynamic analysis of hydro-turbine governing system in the process of load rejection transient", Energy Conversion and Management, Vol. 90, (Jan. 2015), 128-137. (https://doi.org/10.1016/j.enconman.2014.11.020).
103. Gupta, V., Khare, R. and Prasad, V., "Performance evaluation of pelton turbine: A review", Journal of Water, Energy and Environment, No. 13, (July 2013), 28-35. (https://doi.org/10.3126/hn.v13i0.10042).
104. Hosseini, E. and Shahgholian, Gh., "Different types of pitch angle control strategies used in wind turbine system applications", Journal of Renewable Energy and Environment (JREE), Vol. 4, No. 1, (Winter 2017), 20-35. (https://doi.org/10.30501/jree.2017.70103).
105. Mozafarpoor-Khoshrodi, S.H. and Shahgholian, Gh., "Improvement of perturb and observe method for maximum power point tracking in wind energy conversion system using fuzzy controller", Energy Equipment and Systems, Vol. 4, No. 2, (Autumn 2016), 111-122. (https://doi.org/10.22059/EES.2016.23031)
106. Hosseini, E. and Shahgholian, Gh., "Partial- or full-power production in WECS: A survey of control and structural strategies", European Power Electronics and Drives, Vol. 27, No. 3, (Dec. 2017), 125-142. (https://doi.org/10.1080/09398368.2017.1413161).
107. Hosseini, E. and Shahgholian, Gh., "Output power levelling for DFIG wind turbine system using intelligent pitch angle control", Automatika, Vol. 58, No. 4, (2017), 363-374. (https://doi.org/10.1080/00051144.2018.1455017).
108. Kaunda, C.S., Kimambo, C.Z. and Nielsen, T.K., "Hydropower in the context of sustainable energy supply: A review of technologies and challenges", ISRN Renewable Energy, Vol. 2012, (2012), 1-15. (https://doi.org/10.5402/2012/730631).
109. Borkowski, D. and Wegiel, T., "Small hydropower plant with integrated turbine-generators working at variable speed", IEEE Transactions on Energy Conversion, Vol. 28, No. 2, (June 2013), 452-459. (https://doi.org/10.1109/TEC.2013.2247605).
110. Ferreira, J.H.I., Camacho, J.R. and Malagoli, J.A., "A contribution to the study of the estimate hydroelectric potential for small hydropower plant", IEEE Latin America Transactions, Vol. 14, No. 7, (July 2016), 3215-3224. (https://doi.org/10.1109/TLA.2016.7587623).
111. Galvis, J.C., Padilha-Feltrin, A. and Yusta Loyo, J.M., "Cost assessment of efficiency losses in hydroelectricplants", Electric Power System Research, Vol. 81, No. 10, (October 2011), 1866-1873. (https://doi.org//10.1016/j.epsr.2011.05.006).
112. Kumar, K.R. and Kulgod, S.P., "Simulation and analysis of energy harvesting from Grey water and rain water in high rises", Proceedings of the IEEE/ICEETS, Nagercoil, Tamil Nadu, India, (April 2016), 856-861. (https://doi.org/10.1109/ICEETS.2016.7583866).
114. Shen, C.L. and Shen, Y.S., "Output filter design for a novel dual-input PV-wind power converter by energy balance principle", Applied Sciences, Vol. 6, (2016), 1-15. (https://doi.org/10.3390/app 6090263).
116. Heidarpour, F. and Shahgholian, Gh., "Stability improvement of hydraulic turbine regulating system using round-robin scheduling algorithm", Journal of Renewable Energy and Environment (JREE), Vol. 5, No. 1, (Winter 2018), 1-7. (https://doi.org/10.30501/jree.2018.88584).
118. Rahman, A., Saikia, L.C. and Sinha, N., "Load frequency control of a hydro-thermal system under deregulated environment using biogeography-based optimised three-degree-of-freedom integral-derivative controller", IET Generation, Transmission and Distribution, Vol. 9, No. 15, (Nov. 2015), 2284-2293. (https://doi.org/10.1049/iet-gtd.2015.0317).
119. Khodayar, M.E., Abreu, L. and Shahidehpour, M., "Transmission-constrained intrahour coordination of wind and pumped-storage hydro units", IET Generation, Transmission and Distribution, Vol. 7, No. 7, (July 2013), 755-765. (https://doi.org/10.1049/iet-gtd.2012.0272).
120. Hirth, L., "The benefits of flexibility: The value of wind energy with hydropower", Applied Energy, Vol. 181, (Nov. 2016), 210-223. (https://doi.org/10.1016/j.apenergy.2016.07.039).
121. Forouzandehmehr, N., Han, Z. and Zheng, R., "Stochastic dynamic game between hydropower plant and thermal power plant in smart grid networks", IEEE System Journal, Vol. 10, No. 1, (March 2016), 88-96. (https://doi.org/10.1109/JSYST.2014.2317555).
123. Shahgholian, Gh., Hamidpour, H. and Movahedi, A., "Transient stability promotion by FACTS controller based on adaptive inertia weight particle swarm optimization method", Advances in Electrical and Electronic Engineering, Vol. 16, No. 1, (March 2018), 57-70. (https://doi.org/10.15598/aeee.v16i1.2369).
125. Rao, C.S., Nagaraju, S.S. and Raju, P.S., "Automatic generation control of TCPS based hydrothermal system under open market scenario: A fuzzy logic approach", International Journal of Electrical Power and Energy Systems, Vol. 31, No. 7-8, (Sep. 2009), 315-322. (https://doi.org/10.1016/j.ijepes.2009. 03.007).
126. Bhatt, P., Ghoshal, S.P. and Roy, R., "Load frequency stabilization by coordinated control of thyristor controlled phase shifters and superconducting magnetic energy storage for three types of interconnected two-area power systems", International Journal of Electrical Power and Energy Systems, Vol. 32, No. 10, (Dec. 2010), 1111-1124. (https://doi.org/10.1016/j.ijepes. 2010.06.009).
127. Singh, B., Murthy, S.S., Chilipi, R.R., Madishetti, S. and Bhuvaneswari, G., "Static synchronous compensator-variable frequency drive for voltage and frequency control of small-hydro driven self-excited induction generators system", IET Generation, Transmission and Distribution, Vol. 8, No. 9, (Sep. 2014), 1528-1538. (https://doi.org/10.1049/iet-gtd.2013.0703).
128. Khani, K. and Shahgholian, Gh., "Analysis and optimization of frequency control in isolated microgrid with double-fed induction-generators based wind turbine", Journal of International Council on Electrical Engineering, Vol. 9, No. 1, (Feb. 2019), 24-37. (https://doi.org/10.1080/22348972.2018.1564547).
130. Keyvani-Boroujeni, B., Shahgholian, Gh. and Fani, B., "A distributed secondary control approach for inverter-dominated microgrids with application to avoiding bifurcation-triggered Instabilities", IEEE Journal of Emerging and Selected Topics in Power Electronics, Early Access Article, (February 2020), 1-8. (https://doi.org/10.1109/JESTPE.2020.2974756).
132. Carpintero-Renter, M., Santos-Martin, D. and Guerrero, J.M., "Microgrids literature review through a layers structure", Energies, Vol. 12, No. 22, (2019), 1-22. (https://doi.org/10.3390/en12224381).
134. Karimi, H., Shahgholian, Gh., Fani, B., Sadeghkhani, I. and Moazzami, M., "A protection strategy for inverter interfaced islanded microgrids with looped configuration", Electrical Engineering, Vol. 101, No. 3, (Sep. 2019), 1059-1073. (https://doi.org/10.1007/s00202-019-00841-6).
135. Pham, T.H., Prodan, I., Genon-Catalot, D. and Lefèvre, L., "Economic constrained optimization for power balancing in a dc microgrid: A multi-source elevator system application", International Journal of Electrical Power and Energy Systems, Vol. 118, Article 105753, (June 2020), 1-15. (https://doi.org/10.1016/j.ijepes.2019.105753).
137. Tiomo, D. and Wamkeue, R., "Dynamic modeling and analysis of a micro-hydro power plant for microgrid applications", Proceedings of The IEEE/ CCECE, Edmonton, AB, Canada, (May 2019), 1-6. (https://doi.org/10.1109/CCECE.2019.8861875).
139. Singh, B. and Bhalla, K.K., "Reduced converter topology for integrated wind and small-hydro energy generation system", IET Renewable Power Generation, Vol. 9, No. 5, (June 2015), 520-529. (https://doi.org/10.1049/iet-rpg.2014.0235).
140. Ion, C.P. and Marinescu, C., "Autonomous microgrid based on micro hydro power plants", Proceedings of The IEEE/OPTIM, Brasov, Romania, (May 2012), 941-946. (https://doi.org/10.1109/OPTIM.2012.6231918).
141. Gil-González, W., DaniloMontoya, O. and Garces, A., "Modeling and control of a small hydro-power plant for a DC microgrid", Electric Power Systems Research, Vol. 180, Article 106104, (March 2020), 1-6. (https://doi.org/10.1016/j.epsr.2019.106104).