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Optimal Tuning of PID Controllers for Generation Control of HVDC Link Interconnected Power System


Affiliations
1 Department of Electrical Engineering, IET Bhaddal, Ropar, Punjab, India
 

Interconnections of power systems enable taking advantage of diversity of loads, availability of sources and fuel price in order to supply electricity to the loads at minimum cost with a required reliability. But with interconnections, the power system becomes increasingly complex to operate and the system can become less secure for riding through the major outages. System frequency and system voltage profile matching is the main concern in an interconnected power system. With interconnections, variations in system frequency and voltage increase which may lead to large dynamic swings between different parts of the system. In this paper, the Automatic Generation Control of two interconnected control area power system, with parallel HVDC links for each control area, is modeled as a closed loop control system problem. A step input signal is applied to the closed loop control system to correlate the changes in system load during operation of the power system. The variations in system frequency and voltage are reduced with Proportional Integral Derivative (PID) controllers. These controllers are very widely used for closed loop control systems; however, the tuning of these controllers is difficult. With proper selection of PID controller gains, the dynamic performance of the system is improved and with HVDC links for interconnection, the system stability and tie line deviations are maintained.

Keywords

Automatic Generation Control, Automatic Voltage Regulation, HVDC Link, Load Frequency Control, Non-Reheat Turbines, PID Controller, Tie line Control.
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  • D. P. Kothari and I. J. Nagrath, “Automatic generation and voltage control,” in Power System Engineering, 2nd ed., New Delhi, India: Tata McGraw Hill, 2011, pp. 409-430.

  • N. G. Hingorani and L. Gyugyi, “FACTS Concept and General System Consideration” in Understanding FACTS, New Delhi: IEEE Press, 2001, pp. 1-3.

  • Y. Arya, N. Kumar and H.D. Mathur, “Automatic Generation Control in Multi Area Interconnected Power System by using HVDC links,” Int. J. of Power Electronics and Drive System, vol. 2, no. 1, pp.67-75, March 2012.

  • A. Chakrabarti and S. Halder, “Automatic Generation Control,” in Power System Analysis-Operation & Control, New Delhi, India: Prentice Hall India, 2010, pp. 469-506.

  • H. Saadat, “Power System Control,” in Power System Analysis, New Delhi, India: Tata McGraw Hill, 2002, pp. 527-569.

  • D. Apostolopoulou, P.W. Sauer and A.D. Dominguez-Garcia, 2014. “Automatic Generation Control and its Implementation in Real Time”, IEEE, pp. 2444-2453, 2014.

  • K. H. Ang, G. Chong and Y. Li, “PID control system analysis, design and technology,” IEEE Trans. on Control Syst. Technology, vol. 13, no. 4, pp. 559-576, July, 2005.

  • M. Nagendra, and M. S. Krishnarayalu, “PID controller tuning using simulink for multi area power systems,” Int. J. of Eng. Research & Technology, vol. 1, no. 7, pp. 1-9, September, 2012.

  • P. Dabur, N. K. Yadav and V. K. Tayal, “Matlab design and simulation of AGC and AVR for multi area power system and demand side management,” Int. J. of Comput. and Elect. Eng., vol. 3, no. 2, pp. 259-264, April, 2011.

  • S. Singh and J. Kaur, “Fuzzy Logic Based Optimal Generation Control of A Two Area Interconnected Power System with a Parallel HVDC Link,” Int. J. of Advance Engineering and Research Development, vol. 1, no. 5, pp. 1-7, May 2014.


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  • Optimal Tuning of PID Controllers for Generation Control of HVDC Link Interconnected Power System

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Authors

Gurjit Singh
Department of Electrical Engineering, IET Bhaddal, Ropar, Punjab, India
Vipandeep Kaur Dutta
Department of Electrical Engineering, IET Bhaddal, Ropar, Punjab, India

Abstract


Interconnections of power systems enable taking advantage of diversity of loads, availability of sources and fuel price in order to supply electricity to the loads at minimum cost with a required reliability. But with interconnections, the power system becomes increasingly complex to operate and the system can become less secure for riding through the major outages. System frequency and system voltage profile matching is the main concern in an interconnected power system. With interconnections, variations in system frequency and voltage increase which may lead to large dynamic swings between different parts of the system. In this paper, the Automatic Generation Control of two interconnected control area power system, with parallel HVDC links for each control area, is modeled as a closed loop control system problem. A step input signal is applied to the closed loop control system to correlate the changes in system load during operation of the power system. The variations in system frequency and voltage are reduced with Proportional Integral Derivative (PID) controllers. These controllers are very widely used for closed loop control systems; however, the tuning of these controllers is difficult. With proper selection of PID controller gains, the dynamic performance of the system is improved and with HVDC links for interconnection, the system stability and tie line deviations are maintained.

Keywords


Automatic Generation Control, Automatic Voltage Regulation, HVDC Link, Load Frequency Control, Non-Reheat Turbines, PID Controller, Tie line Control.

References