A simple method for optimal capacitor placement in. Simultaneous optimal placement of dgs and fixed capacitor. Distribution system provides a final link between the high voltage transmission system and the. International journal of electrical power and energy system 2008. For the purpose, capacitor placement optimized based upon the c.
Optimal capacitor placement in a radial distribution system using plant growth simulation algorithm r. Optimal capacitor placement for loss reduction in radial. Optimal capacitor placement to reduce losses in distribution system anwar s siddiqui, md. The dynamic load characteristics have been considered in this model. Salis abstracta computer algorithm for optimal voltage control with voltage regulators, suitable for large radial distribution networks is given in this paper. Hybrid design of optimal capacitor placement and reconfiguration. The conductor size selection and capacitor allocation problem are solved using exact ac load flow equations. Optimal voltage regulator placement in a radial distribution system using fuzzy logic a. Introduction reactive currents in distribution systems produce losses and result in increased ratings for distribution components.
Optimal capacitor placement and sizing in distorted radial. Before installing the capacitor, a load flow program based on complex. Optimal capacitor allocation in radial distribution systems for loss reduction. Adding shunt capacitors may lead to high distortion levels. This paper presents a novel method to determine the best locations for capacitor placement in unbalanced radial distribution networks and simple ga is used to find the optimal sizing of the. Optimal capacitor placement in radial distribution systems using fuzzy and advanced harmony search algorithm for loss reduction 1p. A capacitor sizing problem for capacitors placed on a radial distribution system is formulated as a nonlinear programming problem, and a solution algorithm is developed. In the past research work it has been noticed that the power factor correction improve the stability and efficiency of electrical power delivery. Pdf optimal capacitor placement in radial distribution. Optimal capacitor placement in distribution systems for power loss. Optimal capacitor placement in radial distribution system to. Pdf optimal capacitor placement in a radial distribution. Optimal capacitor placement in radial distribution system using artificial bee colony algorithm for voltage profile improvement and loss reduction.
The objective of capacitor placement is peak power and energy loss reduction, taking into account the cost of the capacitors. Pdf new technique for optimal capacitor placement and. Prakash and sydulu also used pso approach for finding the optimal size and location of capacitors in radial distribution system. In the rst half of this thesis chapters 2 and 3, we seek optimal solutions to voltage control problems provided a centralized architecture with complete. Sathish kumar4 1misrimal navajee munoth jain engineering college, chennai. Optimum placement of shunt capacitors in a radial distribution system for substation power factor improvement using fuzzy ga method. Optimum voltage regulator placement in a radial power distribution network anastasia s.
Deploying shunt capacitor banks in distribution systems can effectively reduce the power loss and provide additional benefits for system operation. Sathish kumar4 1misrimal navajee munoth jain engineering college, chennai600 097, india 2,4anna university, chennai600 025, india. The placement of capacitor banks involves determination of size kvar ratings, location of capacitors. The intermittency of wind speed and solar irradiance are handled with multistate modeling using suitable probability distribution functions.
Results power losses operatingconditions and annual benefits are obtained from solution of radial distribution systems. Capacitor placement has been commonly employed to provide reactive power compensation in distribution system. This paper presents an efficient approach for optimal placement of capacitor in radial distribution system, with an objective of improving the voltage profile and reduction of power loss. Pdf in distribution systems, supplying a reactive power along the distribution lines is essential in order to bring benefits such as power loss. In this paper a new method is used for optimal allocation of shunt capacitor units in radial distribution network to curtail distribution system losses and improve voltage profile. Maximum cost saving approach for optimal capacitor placement.
Tech student assistant professor head of the department department of eee department of eee department of eee. A particle swarm optimization pso based approach is used to achieve optimal shunt capacitor placement in radial distribution systems. Due to the proliferation of electronic devices, more harmonics are being injected into distribution systems. Selecting the best location for the capacitor will reduce the requirement of the. The obtained simulation results are compared with an existing optimization algorithm. Optimal placement of capacitors in radial distribution system using shark smell optimization algorithm article pdf available in ain shams engineering journal 72 february 2016 with 237 reads. To test the effectiveness, the proposed method was implemented on ieee 9bus test system and its performance was compared with binary pso bpso and ga.
Optimal capacitor placement in distribution systems loss. Optimal capacitor placement in distribution system for loss minimization using sa mahdi mozaffari legha1, meysam ramezaninejad2. For this purpose, the optimal allocation of shunt capacitors for a given radial distribution system can be useful for the system outlining and improve efficiency. These rules are represented as if premise antecedent, then conclusion consequent. Optimal capacitor placement in distribution system for. E sir c r reddy college of engineering satish kumar injeti associate professor, department of e. Oct 17, 2017 optimal capacitor placement in distribution systems loss reduction and voltage improvement. Optimal capacitor placement and sizing on radial distribution. Optimal capacitor placement to distribution transformers. To identify the location for capacitor placement in distribution system loss sensitivity factors have been used. The power loss is significantly high in distribution systems because of voltages and higherlower currents. Optimal dg and capacitor allocation in distribution systems using dica 643 journal of engineering science and technology october 2014, vol. Maximum cost saving approach for optimal capacitor.
Abstract this paper presents a new approach in order to determine the optimal placement of capacitor in radial distribution system. Optimal capacitor placement in radial distribution networks. In this paper, the optimum capacitor placement and its sizing has been applied in the distribution network in terms of power losses minimization and voltage profile improvement. The problem of choosing optimal locations and sizes for shunt capacitors in an unbalanced radial distribution system is addressed with the two algorithms in this articleone is for selecting the best locations of capacitor placement and candidate node identification algorithm. Optimal capacitor placement in radial distribution system ieee xplore. Optimal placement and sizing of renewable distributed. This paper presents a mixed integer nonlinear programming minlp model to solve the conductor gradation optimization problem of radial distribution systems. Optimal capacitor placement in radial distribution system using gravitational search algorithm. Optimal capacitor placement to distribution transformers for power loss reduction in radial distribution systems abstract.
Pdf capacitors in power systems are generally used to supply reactive power for the purpose of loss minimization and voltage profile improvement. Optimal capacitor allocation in distribution system using. Wu 1, considered the capacitor placement in the radial distribution system. The applications of grey wolf gwo, dragonfly dfo and mothflame mfa optimization techniques for optimum sitting of capacitors in various radial distribution systems rdss are presented. Their objective of the work was to find the best capacitor location and size of the capacitor in the. Optimal capacitor placement in radial distribution systems. The object is to find the optimal size of the capacitors so that the power losses will be minimized for a given load profile while considering the cost of the capacitors. Optimal capacitor placement in distribution systems for power.
Particle swarm optimization based capacitor placement on radial distribution systems. Student, department of electrical engineering, annamacharya institute of technology. The nonlinear integer problem of capacitor placement in distribution system is solved with discrete values of capacitor sizes and selection of their locations. Fuzzy algorithm for capacitor allocation and sizing in. Capacitor allocation in radial distribution system for. Optimization and control of power flow in distribution.
In this paper, the input ghazi ghazi et al optimal capacitor placement in radial distribution systems. A pso based approach for optimal capacitor placements to minimize harmonic distortion effects in radial distribution systems was introduced by yu et al. The general capacitor placement problem is how to optimally determine the locations to install capacitor and sizes of capacitors to be installed in the buses of radial distribution systems. The performance of the proposed hs algorithm is validated on the 9 and 34bus radial distribution systems and the obtained. The loss sensitivity factor is applied to determine the most candidate buses.
Optimal capacitor placement to reduce losses in distribution. A twostage methodology is used for the optimal capacitor placement problem. Distribution system reconfiguration dsr and optimal capacitor placement ocp are the most alternative techniques for increasing the power system generation and covering the growth of power demands. The problem of capacitor placement on a radial distribution system is formulated and a solution algorithm is proposed.
This paper proposes a methodology for optimal placement and sizing of renewable distributed generations i. Padma lalitha 1assistant professor, department of electrical engineering, annamacharya institute of technology and sciences, rajampet. Optimal capacitor placement on radial distribution systems abstract. A simple method for optimal capacitor placement in unbalanced. This study presents a twostage procedure to identify the optimal locations and sizes of capacitors in radial distribution systems. Lsf is able to predict which bus will have the biggest loss reduction when a capacitor is placed. Optimal capacitor placement in radial distribution systems using a. Optimal capacitor placement in radial distribution. A fuzzygenetic algorithm for optimal capacitor placement in.
New technique for optimal capacitor placement and sizing in radial distribution systems conference paper pdf available june 2018 with 102 reads how we measure reads. Combining both techniques gives better performance than using the individual technique. Optimal capacitor placement is a complex combinatorial problem. This paper presents a new and efficient approach for capacitor placement in radial distribution systems that determine the optimal locations and size of capacitor with an objective of improving. Optimal conductor selection and capacitor placement in. Then, each optimization technique is utilized to find optimum placements and sizes of capacitors for determined buses. References 810 have considered optimal capacitor placement in power system using genetic algorithm. Combining both techniques gives better performance than. However, the optimal capacitor placement problem of radial distribution system for variable load level is considered as a nonlinear optimization problem with a nondifferentiable objective function due to the fact that the costs of the capacitor vary in a discrete manner and the system load also varies continuously throughout the day. Distribution system is a link between high voltage transmission system and the low. Shunt capacitor installation in distribution systems is very beneficial and requires optimal placement and sizing of theses capacitors. Simultaneous optimal placement of dgs and fixed capacitor banks in radial distribution systems using bsa optimization meera shareef syed pg scholar, department of e.
Optimal capacitor placement on radial distribution systems. Optimal capacitor placement in radial distribution systems using. Numerous researches were done on optimal capacitor placement in balanced distribution feeders 410. Optimal capacitor placement in radial distribution system. A fuzzygenetic algorithm for optimal capacitor placement. The algorithm predicted the optimal size of the capacitors and should be placed at the proper location for loss minimization and hence improvement in voltage. Current optimization models of capacitor placement. Using heuristic optimization techniques sirjani, reza, mohamed, azah, shareef, hussain on.
In this paper, the input ghazi ghazi et al optimal capacitor placement in radial distribution systems using a fuzzydragonfly method 119. Optimal conductor selection and capacitor placement in radial distribution system using nonlinear ac load flow equations and dynamic load model. The location, type, and size of capacitors, voltage constraints, and load variations are considered. Optimal capacitor placement and sizing formulation sources in the system may. Optimal placement of capacitors in radial distribution system. The ultimate goal in radial distribution systems is to distribution systems has. Different load levels and discrete nature of capacitors are all taken into consideration in the problem formulation. Grainger and lee 4 developed a nonlinear programming based method in which capacitor location and capacity were expressed as continuous variables. This paper proposed a simple method for optimal placement and sizing of capacitor while minimizing power losses and improving the voltage profile in an unbalanced radial distribution system urds. Optimal placement of capacitor for voltage support and.
Pdf optimal capacitor placement in radial distribution systems. Distribution system is a link between high voltage. The losses produced by reactive currents can be reduced by the. Pdf optimal capacitor placement in a radial distribution system. Maximum cost saving approach for optimal capacitor placement in radial distribution systems using modified abc algorithm n. Abstract this article presents a simple method for investigating the problem of contemporaneously choosing optimal location and size of shunt capacitors in threephase unbalanced radial distribution systems. Optimal capacitor placement in a radial distribution. This paper presents a mathematical formulation for placement of capacitor in a radial system by approximate.
Optimal sizing and placement of capacitors in radial. This paper presents a new and efficient approach for capacitor placement in radial distribution systems that determine the optimal locations and size of capacitor with an objective of improving the voltage profile and reduction of power loss. These techniques reduce the radial distribution system rds losses and enhance the voltage profile. Optimal capacitor placement in radial distribution systems using fuzzy and advanced harmony search algorithm for loss reduction. Capacitors are placed on the nodes with highest sensitivity index. Optimal capacitor placement results in system loss. Optimal capacitor placement in a radial distribution system using plant growth simulation. The problem of optimal capacitor placement ocp in a radial distribution system rds involves the determination of the locations and sizing of capacitors to be. In first stage, the loss sensitivity analysis using two loss sensitivity indices lsis is employed to select the most candidate capacitors locations. Proceedings of the ieee power engineering society general meeting, june 2428, deemed university, warangal, pp. For the purpose, capacitor placement optimized based upon the cost, size and location. Optimal capacitor placement in radial distribution systems using a fuzzydragonfly method conference paper pdf available in wind energy june 2018 with 236 reads how we measure reads. For the capacitor placement, rules are set to find the optimal locations of capacitor placement. Optimal placement of capacitors in radial distribution system using a fuzzyga method.
The proposed method was implemented on standard 70bus and 5. Therefore, this paper proposes for capacitor placement and sizing in radial distribution system to reduce the power losses and to improve the voltage profile using fuzzy expert system fes. Optimal capacitor placement for loss reduction in distribution systems using fuzzy and hybrid genetic algorithm written by dinakara prasad reddy p, sreenivasulu a published on 201126 download full article with reference data and citations. This paper presents the optimal placement of capacitor banks in radial distribution system. The main objective function formulated consists of two terms. Optimal capacitors placement in ieee 6 bus using genetic.
Optimal capacitor placement on a radial distribution system chandram karri, sudhakar avv s r engineering college, warangal, india abstract in this paper, invasive weed optimization iwo is proposed to optimize the size of capacitors for reducing power loss and improving voltage profiles in a radial distribution system. Sreenivasulu3 1electrical and electronics engineering department, chaitanya bharathi institute of technology, hyderabad, india 2j. Optimal capacitor placement in a radial distribution system. In practice, the power loss on distribution transformers can account for a. The performance of the proposed method have been tested on two case studies 19. Capacitor installation is one of the most commonly used methods for reactive power compensation in the distribution networks. Capacitor placement in unbalanced radial distribution. Optimum voltage regulator placement in a radial power. The problem of optimal capacitor placement ocp in a radial distribution system rds involves the determination of the locations and sizing of capacitors to be installed at the buses for minimizing the power loss and improving the voltage profile of the system. The objective of the optimal capacitor placement problem is to. Optimal conductor selection and capacitor placement in radial. Distribution systems are growing large and being stretched too far, leading to higher system losses and poor voltage regulation, the need for an efficient and effective distribution system has therefore become more urgent and important. Royoptimal capacitor placement in radial distribution systems using teaching.