The present paper considers convergence characteristics of the particleswarmalgorithm and its modification - the hybrid PSO-GS algorithm obtained under combination of the PSO algorithm and Grid Search algorithm. Com...
详细信息
ISBN:
(纸本)9781509022212
The present paper considers convergence characteristics of the particleswarmalgorithm and its modification - the hybrid PSO-GS algorithm obtained under combination of the PSO algorithm and Grid Search algorithm. Comparison of quality indices of the particleswarmalgorithm and the steepest descent algorithm has been carried out for evaluation of advantages of the PSO algorithm in comparison with classical optimizationalgorithms.
In this paper, a new hybrid solution to the Optimal Power Flow (OPF) problem is proposed. In order to achieve this goal, a new hybrid Salp swarmalgorithm (HSSA) is proposed to find the optimal frontier of OPF problem...
详细信息
ISBN:
(纸本)9781728122205
In this paper, a new hybrid solution to the Optimal Power Flow (OPF) problem is proposed. In order to achieve this goal, a new hybrid Salp swarmalgorithm (HSSA) is proposed to find the optimal frontier of OPF problem. The proposed hybrid algorithm combines the advantages of the salp swarmalgorithm (SSA) and particleswarmoptimization (PSO) algorithm. The proposed HSSA provides more efficient solutions even for conflict constraints. This method is applied on five objective functions called power generation cost, environmental pollution emissions, active power loss, voltage deviation and voltage stability. The tests and results of the proposed HSSA have been applied to IEEE 30 bus test system to demonstrate the high performance compared with other optimization methods in the literature. Single and bi-objectives studied cases are tested to prove the capability of the proposed HSSA compared with the original SSA and PSO as well as the existing methods in the literature.
In this paper, a short-term load forecasting model and a load early warning model for charging station based on PSO-SVM are proposed. particleswarmoptimization (PSO) is used to optimize the parameters of support vec...
详细信息
ISBN:
(纸本)9781728113074
In this paper, a short-term load forecasting model and a load early warning model for charging station based on PSO-SVM are proposed. particleswarmoptimization (PSO) is used to optimize the parameters of support vector machine (SVM) model, and the PSO-SVM load forecasting model for the optimal nuclear parameters of charging station is established according to the normalized root mean square error (NRMS). On the basis of it, a load warning model of charging station is established and verified by an example. Experiments show that the short-term load forecasting model based on PSO-SVM and the load forecasting model of charging station meet the requirements of forecasting and forecasting accuracy.
This paper presents the reactive power management approach for a medium voltage (MV) distribution grid with inverter-based photovoltaic (PV) distributed generations using a particleswarmoptimization (PSO) algorithm....
详细信息
ISBN:
(纸本)9781728148786
This paper presents the reactive power management approach for a medium voltage (MV) distribution grid with inverter-based photovoltaic (PV) distributed generations using a particleswarmoptimization (PSO) algorithm. The objective of this research is to control the reactive power flow to support the distribution grid and voltage regulation. The control algorithm is based on centralized reactive power management at the MV distribution grid for allocating the optimal reactive power of each PV distributed generation. The system case consists of a PV system connected to the simple radial feeders in the distributed grid. Simulation studies of the proposed system are built through MATLAB and DIgSILENT PowerFactory software. The simulation results show that the proposed control algorithm is useful for mitigating voltage rise and reverse power flow in the MV distribution grid with the PV generation systems.
We rewrite the Foppl-Hencky equation as an unconstrained optimization, and then solve the equation by an optimizationalgorithm. The optimizationalgorithm is constructed by combining the intelligent algorithms with a...
详细信息
ISBN:
(纸本)9781728146522
We rewrite the Foppl-Hencky equation as an unconstrained optimization, and then solve the equation by an optimizationalgorithm. The optimizationalgorithm is constructed by combining the intelligent algorithms with an numerical algorithm for different equation. We give three numerical experiments, and the simulation results show that the Rounge-Kutta method based particle swarm optimization algorithm solves the equation very well.
In the north of China, the problem of wind abandonment is very serious. In order to improve the ability of wind power consumption, a cogeneration system with an electric boiler is proposed. First, the mathematical mod...
详细信息
In the north of China, the problem of wind abandonment is very serious. In order to improve the ability of wind power consumption, a cogeneration system with an electric boiler is proposed. First, the mathematical model of the minimum power generation cost of the traditional unit and the optimized model are established. Second, the model is solved by using the particle swarm optimization algorithm. In addition, a power structure of combined heat and power system(CHP) is constructed for simulation experiments. Through experimental analysis, proving the feasibility of the model. Finally, Simulation results show that making the electric boiler work in the period of wind abandonment can effectively alleviate the wind abandonment phenomenon. It also can provide more space for the wind power and enhance the wind power consumption.
Effective diagnosis of rotating machinery is difficult in view of the complex structure, weak early fault signals, non-stationary and non-linear vibration signals, and low signal-to-noise ratio. In this paper, a fault...
详细信息
Effective diagnosis of rotating machinery is difficult in view of the complex structure, weak early fault signals, non-stationary and non-linear vibration signals, and low signal-to-noise ratio. In this paper, a fault diagnosis method is proposed based on particleswarmoptimization(PSO) and variational modal decomposition(VMD). Firstly, wavelet packet threshold is denoised on the signal, VMD is decomposed on the reconstructed signal, and PSO is optimized on the inherent mode function(IMF) obtained from decomposition so as to determine the best IMF function. Then Hilbert transform and envelope spectrum analysis are carried out on the IMF function, and the envelope spectrum analysis result is compared with theoretical calculation frequency to finally determine the fault type. The results indicate that this method can effectively reduce noise components in signals, extract weak fault information and realize fault diagnosis.
Neural network black box model for predicting the slope runoff and sediment yield and two empirical equations for calculating the slope runoff and sediment yield were established with the basis of practical field data...
详细信息
ISBN:
(纸本)9783037850398
Neural network black box model for predicting the slope runoff and sediment yield and two empirical equations for calculating the slope runoff and sediment yield were established with the basis of practical field data of slope runoff and sediment amount by artificial simulated rainfall experiments. In additional, particle swarm optimization algorithm is used to inquire the empirical equation's unknown parameters based on least square method. And results show that, neural network model might represent the nonlinear relationship between runoff, sediment amount and each impact factor excellently. Furthermore, predicted results are satisfactory and its relative error mean is around 10%. Empirical equations are reasonably and reliable, its relative error mean is less than 20%. These two methods provide an operable means for such intricate research of slope runoff and sediment yield predication and calculation.
Gravity Search algorithm(GSA) is a swarm intelligence optimizationalgorithm based on the gravity *** standard GSA algorithm has strong global search capability,while its convergence speed is *** particleswarm Opti...
详细信息
Gravity Search algorithm(GSA) is a swarm intelligence optimizationalgorithm based on the gravity *** standard GSA algorithm has strong global search capability,while its convergence speed is *** particleswarmoptimization(PSO) algorithm has high convergence speed and search *** on the advantages of the above two algorithms,a hybrid algorithm(PSOGSA) is proposed in this paper,and two adaptive weighted update strategies are introduced into the optimization process to improve the search accuracy of the hybrid *** the same time,we added variable mutation probability to solve the problem that particles are easily be trapped in local *** order to verify the effectiveness of the two improved hybrid algorithms,the two algorithms are applied to the power system economic load dispatch(ELD) *** generation cost optimization performance tests are computed for three groups of power systems with different unit *** simulation results show that the two adaptive weighted hybrid algorithms which are proposed in this paper can effectively reduce the generation cost of the power system.
Quantum particleswarmalgorithm integrated the quantum behavior with particle swarm optimization algorithm,is used to settle the majorization question of calculating available transmission *** by using the software o...
详细信息
Quantum particleswarmalgorithm integrated the quantum behavior with particle swarm optimization algorithm,is used to settle the majorization question of calculating available transmission *** by using the software of Matlab to IEEE-30 bus system as an example of the simulation,after comparing the simulation results with the traditional particle swarm optimization algorithm results,we dissected the optimization performance and convergence speed of the above two algorithms,and verify the effectiveness of quantum particleswarmalgorithm to settle the majorization question of the available transmission capability.
暂无评论