Regulating the Voltage of the Hybrid DG Power Systems Using From SMES System and FACTS Devices

Document Type : Original Article

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Abstract

The main objective of this paper is solving the problem of voltage variations of Hybrid Photovoltaic/Fuel cell at different conditions. Because of valuable advantages of hybrid DG power systems, using from these power systems become more and more prevalent. But there are some defects that cause the application of DG power system unacceptable. One of these deficiencies relates to the malfunction of energy sources. For example, during shaded conditions the output power of PV arrays reduces to negligible values or by stopping the correct electrochemical process of fuel cell, it cannot deliver power to the grid. The other problem of Hybrid Photovoltaic/Fuel cell is that there is not enough reactive power for delivering to the load and this cause the voltage reduction of DG power system. To solve mentioned problems, in this survey, it is suggested that by applying SMES system and D-STATCOM, active and reactive power can be provided to the load, respectively. But, adding these elements to the power system at the same time needs to an efficient controller. In this paper, multivariable control strategy as an efficient method which can regulate the voltage of the DG power system busses with an appropriate dynamic is selected to design the controller. Generally, in this paper, after designing one standard Hybrid PV/Fuel cell DG power system, by adding the elements of SMES system and D-STATCOM, the voltage of the proposed system is regulated at different conditions and this fact is approved via simulation tests.
 

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References

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  • Receive Date: 03 February 2015
  • Revise Date: 04 January 2021
  • Accept Date: 19 September 2018

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