applied to find out the optimal generation of each unit when the generation cost curves are non-smooth and discontinuous in nature. Most of the PSO algorithms suffer from the problem of premature convergence in the early stages of the search and hence are unable to locate the global optimum. The idea here is to exercise proper control over the global and local exploration of the swarm during the optimization process. The PSO_TVAC based approach for practical non-convex ELD problem is tested on four test systems having different sizes and non-linearities. Out the four, two test systems are with valve point loading effects, one system has POZ and one system has a large dimension with 38 generating units. The PSO_TVAC is found to …show more content…
The Lambda iteration method is implemented in three and six generating units. The results are compared for two different cases with and without losses. In first case generator constraints are considered along with the lossless system and in second case generator constraints are considered with the losses. All the programming has been done in MATLAB environment. In this study, three and six unit thermal power plant is considered which is solved for two different cases with and without losses. Vo Ngoc Dieu [16], proposed an augmented Lagrange Hopfield network (ALHN) for real power dispatch on large-scale power systems. The proposed ALHN is a continuous Hopfield network with its energy function based on augmented Lagrange function. For this combination, the ALHN method can easily deal with large-scale problems with nonlinear constraints. The proposed ALHN has been tested on systems from 40 units to 240 units, IEEE 118-bus and IEEE 300-bus systems, and the obtained results have been compared to those from other methods. The test results have shown that the ALHN method can obtain better solutions than the com¬pared methods in a very fast manner. Therefore, the proposed ALHN could be favorable for implementation on the real power dispatch problems for large-scale systems. The proposed ALHN has been tested on differ¬ent systems with large number of generating units and buses for two cases neglecting power loss and including power loss in transmission system. Serhat
Using an above following combined function attained which is optimized by using genetic algorithm –
The objective of this message is to appraise testimony refined by PowerCo's economists in order to establish the apparent profit or loss which could result from developing a cutting edge power generator. Considering the ever increasing demand for electricity, the present power plant can effectively supply electricity in the next 10-12 years. Therefore, a proposal has been put forward and this report will be aimed at determining whether the novel power generator is supposed to be developed.
The shipping cost and/or unavailability of transportation between the plants and some locomotive locations will eliminate some of the routes due to cost inefficiency. These routes are the unacceptable routes and will not be considered for distribution from the specified plant. By removing unacceptable routes, Solutions Plus is able to build a linear programming solution to determine which plant/locomotive location combinations are optimal. Based on the shipping cost provided, the routes that are eliminated are as follows:
B.K. Panigrahi [2], presents a novel heuristic optimization method to solve complex economic load dispatch problem using a hybrid method based on particle swarm optimization (PSO) and gravitational search algorithm (GSA). This algorithm named as hybrid PSOGSA combines the social thinking feature in PSO with the local search capability of GSA. To analyze the performance of the PSOGSA algorithm it has been tested on four different standard test cases of different dimensions and complexity levels arising due to practical operating constraints. The obtained results are compared with recently reported methods. The comparison confirms the robustness and efficiency of the algorithm over other existing techniques. PSOGSA is formulated by S.
Introduction: Due to growing awareness of environmental issues, Australia is committed to the clean energy target of 33,000GWh by the year 2020. Integration of distributed energy resources (DERs) in low voltage system will play an important role in fulfilling the target. In order to accommodate DERs, the structure and control strategies of the modern power systems is moving from traditional centralised generation and control structure to localized generation and control and coordination [1]. However, it possesses a variety of economic and technical challenges.
Though there are different types of generators are available like DC shunt ,series and compound generator and AC types parallel and compound DC generators, synchronous and asynchronous(induction generators), so there will be considerable increase in complexity of embedded
Optimal power flow is defined as fulfilling the power requirements of consumer’s with least outlay of power generation. OPF is a functional unit that reduces the production expenditure, bus voltage divergences and losses which enhances the structure functionality by fulfilling some restraints. The nature of some of the variables follows continuity with real output of power and voltage and few other variables in OPF is discrete with phase shifters, reactive injections and tap settings in transformers which is considered to be major problem. OPF problem was resolved by several traditional optimization techniques.
There two ways to stabilize power supply, first approach is a Corrective approach, where new power stations are built, existing infrastructures are upgraded and new maintenance plans are developed and followed. This approach is a
most economic manner in real-time operation. The objective is to minimize the total generation cost (including fuel cost, plus emission cost, plus operation/maintenance cost, plus network loss cost) by meeting the following operational constraints.
results obtained show that ALO have been successfully implemented to solve different ELD problems; moreover, ALO is able to provide very spirited results in terms of minimizing total fuel cost and lower transmission loss. Also, convergence of ALO is very fast as compared to lambda iteration method, particle swarm optimization (PSO) algorithm, genetic algorithm (GA), APSO, artificial bee colony (ABC), and Grey Wolf optimizer (GWO) for small-scale power systems. Also, it has been observed that the ALO has the ability to converge to a better quality near-optimal solution and possesses better convergence characteristics than other widespread techniques reported in the recent literature. It is also clear from the results obtained by different
Keywords— Backpropagation algorithm, Particle Swarm Optimization Technique, Recurrent Neural Network, Voltage Instability Predictor, Voltage Stability
An accurate cost function for the transmission system is formulated where both fixed and variable costs for all planned facilities are includes, in addition to the cost energy losses. The cost function is then minimized, using (BBO) algorithms. We can be used to derive algorithms for optimization. We apply the BBO on the model of IEEE of 6-bus test system.
The stability of an interconnected power system is the ability of the system to return to its normal or stable condition after having been subjected to some form of disturbance. With the interconnected systems continually increasing in size and extending over whole geographical regions, it is becoming increasingly more difficult to maintain synchronism between various parts of the power system. This paper work presents an advanced adaptive Particle swarm optimization technique to optimize the SVC controller parameters for enhancement of the steady state stability & overcoming the premature convergence & stagnation problems as in basic PSO algorithm & Particle swarm optimization with shrinkage factor & inertia weight approach (PSO-SFIWA). In this paper SMIB system along with PID damped SVC controller is considered for study. The generator speed deviation is used as an auxiliary signal to SVC, to generate the desired damping. This controller improves the dynamic performance of power system by reducing the steady-state error. The controller parameters are optimized using basic PSO, PSO-SFIWA & Advanced Adaptive PSO. Computational results show that Advanced Adaptive based SVC controller is able to find better quality solution as compare to conventional PSO & PSO-SFIWA Techniques.
Abstract -Power systems have increased in size and complexity and national society depends heavily upon a high level of power system reliability. When the bulk transmission system is subjected to large disturbances there is the possibility of a system wide blackout due to cascading outages. After a partial blackout or system breakdown condition, restoring power system is needed and then power needs to be restored as quickly, stability and reliability as possible and consequently. Outage time after extensive blackouts depends very much on the power system restoration process. Power system restoration is a very challenging task to the operator since the situation is so far from normal conditions. This paper proposes a simulation-based tool MATLAB/SIMULINK that determines suitable restoration transmission lines route with using Fuzzy Inference System for IEEE 6 Bus System
Abstract— This paper involves a novel application of the improved particle swarm optimization (IPSO) in an economic dispatch problem (EDP) that consists influence of valve-point loading, power balance, and generators constraints. This method is able to improve the best value of the cost function with a slight increase in the average time trials. This procedure is suitable for solving large-scale and complex economic dispatch problems. In this report, IPSO algorithm is tested on three systems and experimental results are compared with other efficient methods. Simulation results demonstrate the efficiency of proposed algorithms for solving economic dispatching problems.