Conference paper
Convex Relaxation of Power Dispatch for Voltage Stability Improvement
Department of Electrical Engineering, Technical University of Denmark1
Automation and Control, Department of Electrical Engineering, Technical University of Denmark2
Center for Electric Power and Energy, Centers, Technical University of Denmark3
Electric Power Systems, Center for Electric Power and Energy, Centers, Technical University of Denmark4
A method for enhancing the voltage stability ofa power system is presented in this paper. The method isbased on a stability-constrained optimal power flow approach,where dispatch is done such that a maximum L-index isminimised for all load busses in a transmission grid. It isshown that optimal dispatch is obtainable with enhancedmargins for voltage stability using a semidefinite relaxation ofthe optimal power flow problem, and that this problem canbe formulated as semidefinite program with a quasi-convexobjective.
Numerical tests are performed on the IEEE-30 busand BPA systems. The feasibility of the method is demonstratedthrough demonstrating that improved voltage stability marginsare obtained for both systems.
| Language: | English |
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| Publisher: | IEEE |
| Year: | 2015 |
| Pages: | 1528-1533 |
| Proceedings: | 2015 IEEE Multi-Conference on Systems and Control |
| ISBN: | 147997787X , 147997787x , 1479977977 , 9781479977871 , 9781479977970 , 1479977861 and 9781479977864 |
| Types: | Conference paper |
| DOI: | 10.1109/CCA.2015.7320827 |
| ORCIDs: | Pedersen, Andreas Søndergaard , Blanke, Mogens and Jóhannsson, Hjörtur |
BPA system Generators IEEE-30 bus L-index Numerical stability Power system stability Stability criteria Voltage measurement Yttrium convex programming convex relaxation load flow optimal power flow approach power dispatch power generation dispatch power grids power system stability power transmission quasiconvex objective semidefinite relaxation transmission grid voltage stability improvement
