PJ-Iprekas-Mei-2009
http://repository.polnep.ac.id:80/xmlui/handle/123456789/90
Kumpulan E-Journal Iprekas Periode Mei 20092021-03-01T19:37:44ZRobust Power System Stabilizers Design Using Reduced Order Models
http://repository.polnep.ac.id:80/xmlui/handle/123456789/92
Robust Power System Stabilizers Design Using Reduced Order Models
Hardiansyah
This paper provides the design of robust power system stabilizers using reduced order models whose state variables are torque angles and speeds. The methods are based on a modified optimal controller that place the system poles in an acceptable region in the complex plane for a given set of operating and system conditions. The output feedback gain matrix is obtained by using the strip eigenvalue assignment which it does not need the specification of weighting matrices. The effectiveness of the proposed controller is illustrated by a numeric example involving a three-machine nine-bus power system. The results show the robustness of the proposed controller and its ability to enhance system damping over several operating conditions.
2013-02-15T00:00:00ZThe Impact On Tower Height Of Wind Turbine
http://repository.polnep.ac.id:80/xmlui/handle/123456789/91
The Impact On Tower Height Of Wind Turbine
Yandri
Wind is the fastest growing energy source in the world today. The most critical factor influencing the power developed by a wind energy conversion system is the wind velocity. Wind velocity increases with height due to wind shear. Hence, the taller the tower, the higher will be the power available to the rotor. However, taller towers cost more. Thus, the optimum tower height should be taken into account by working out the economics of the options in terms of cost per kWh of electricity generated. Other factors must also be considered in the design of tower height such as the limitation of regulatory law and the difficulty of service and maintenance. So, final decision on the tower height should be made after considering all these factors.
2013-02-15T00:00:00Z