Publication Type:

Conference Paper

Source:

IEEE International Conference on Power, Control, Signals and Instrumentation Engineering, ICPCSI 2017, Institute of Electrical and Electronics Engineers Inc., p.2118-2121 (2018)

ISBN:

9781538608135

URL:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85050072050&doi=10.1109%2fICPCSI.2017.8392089&partnerID=40&md5=67420e5241693affc795bbf69d930f13

Keywords:

Electric control equipment, Electric frequency control, Electric inverters, Electric load management, Electric power transmission networks, Induction motors, Line-commutated inverters, Load frequency controllers, Load-frequency control, Power control, Pumps, Slip power recoveries, Speed, Supply-demand management, Variable speed operations, Variable-speed pumps, Wound rotor induction motor

Abstract:

This paper presents a method for supply-demand balancing in autonomous micro-grids using a variable speed pump. The pump is driven by a wound rotor induction motor (WRIM) utilizing a slip power recovery control. The slip power from the rotor is recovered through a line-commutated inverter, which gives the capability for the motor to obtain variable speed operation. Power drawn by the pump being proportional to cube of the speed, the stator power is varied over a wide range as the speed is varied. A load frequency controller senses the deviation in the micro-grid frequency due to the supply-demand mismatch and it suggests the triggering angle of the inverter. This makes the power drawn by the pump track the load variation, so as to nullify the frequency drift and restores the power balance in the micro-grid. A 250kW WRIM is used to drive the proposed micro-grid, which has a maximum demand of 250 kW. The entire system is simulated in MATLAB/Simulink and the variable speed operation of the pump is demonstrated for different triggering angles of the inverter. © 2017 IEEE.

Notes:

cited By 0; Conference of 2017 IEEE International Conference on Power, Control, Signals and Instrumentation Engineering, ICPCSI 2017 ; Conference Date: 21 September 2017 Through 22 September 2017; Conference Code:137381

Cite this Research Publication

S. R. Mohanrajan, Vijayakumari, A., and Kottayil, S. K., “Power balancing in autonomous micro grid with variable speed pump”, in IEEE International Conference on Power, Control, Signals and Instrumentation Engineering, ICPCSI 2017, 2018, pp. 2118-2121.