a new multi-stage fuzzy (msf) controller based on multi-objective harmony search algorithm (mohsa) is proposed in this paper to solve the load frequency control (lfc) problem of power systems in deregulated environment. lfc problem are caused by load perturbations, which continuously disturb the normal operation of power system. the objectives of lfc are to mini small size the transient deviati...

When evaluating the safety of steel structures, welding residual stress is used as secondary load and if there any restraint, yield base material for load, regardless size restraint. Of late, members increasing with increase in use high-strength steels, proportion total during evaluation structures increasing. Therefore, it necessary to investigate effect restraint on stress, determine reasonab...

{ We nd two interesting thresholds for the number of tasks generated under a new model of on-line task assignment and load balancing environment, in which tasks are assigned without any information on current load status, and load balancing is achieved together with task assignment. It is shown that balanced task assignment can be obtained deterministically when the number of tasks exceeds the ...

This paper presents the impact of grid-connected photovoltaic (PV) generator on dynamic voltage stability of a power distribution system by considering solar intermittency, PV penetration level, and contingencies such as line outage and load increase. The IEEE 13 node test feeder is used as a test system, and a solar PV of 0.48 kV/0.5 MVA is integrated into the test system. Test results show th...

For nonlinear thermal power plants whose dynamics vary with load demand, a load-dependent exponential ARX (Exp-ARX) model which can exactly describes the nonlinear properties of the plants is presented. The Exp-ARX model requires only off-line identification. Based on the model, a constrained multivariable generalized predictive control (CMGPC) strategy is designed and implemented in a simulati...

Abstract— A Fourier analysis of on-chip signals in CMOS integrated circuits is presented in this paper. It is demonstrated that on-chip signals can be approximated by a Fourier series up to the th harmonic component. The effective load impedance characterizing a distributed RC and RLC line driven by a CMOS logic gate is based on a Fourier analysis of the on-chip signals. The voltage waveform ba...

This paper presents the design process of a high performance 3-phase 3.7 kW 2-pole line start permanent magnet synchronous motor for pumping system. A method was proposed to study the starting torque characteristics considering line start with high inertia load. A d-q model including cage was built to study the synchronization capability. Time-stepping finite element method analysis was utilize...

UNLABELLED In contrast to resource-rich countries, most HIV-infected patients in resource-limited countries receive treatment without virological monitoring. There are few long-term data, in this setting, on rates of viral suppression or switch to second-line antiretroviral therapy. The DART trial compared clinically driven monitoring (CDM) versus routine laboratory (CD4/haematology/biochemistr...

We hypothesized that recently formed, incompletely mineralized, and thus, relatively deformable osteons in the equine third metacarpus enhance in vitro load-controlled fatigue life in two ways. Macroscopically, there is a compliance effect, because reduced tissue elastic modulus diminishes the stress required to reach a given strain. Microscopically, there is a cement line effect, in which new ...

Research in the area of power system, incorporating optimal power flow and optimal load shedding, has been used in classical dispatch problems to determine control adjustments to remove line overloads. This paper reports a rule-based load shedding in a ship power system. To filter critical outages and congestion cases, a load shedding rule-based system is implemented. The algorithm searches for...