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Proceedings ArticleDOI

Reconfiguration of distribution system for loss reduction using improved harmony search algorithm

01 Oct 2017-pp 377-378
TL;DR: IHSA (Improved Harmony Search Algorithm) provides a better solution as it looks for optimal positions in the distribution system to switch on/off tie lines for optimal power flow and thus reduces the distribution power losses.
Abstract: Nowadays Distribution networks are growing in complex due to the increase in power demand, variation in load and different kinds of load. So these leads to degradation of quality power to the consumers. The efficient Operation of Distribution networks can be achieved by reconfiguring the network for reducing the line losses and for improving the system reliability. IHSA (Improved Harmony Search Algorithm) provides a better solution as it looks for optimal positions in the distribution system to switch on/off tie lines for optimal power flow and thus reduces the distribution power losses. These tie line switches can be used as emergency service restoration after a fault in the feeder. Autonomously controlling the sectionalizing switches in the distribution feeder makes possible to perform emergency service restoration in a shorter time.
Citations
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Journal ArticleDOI
TL;DR: A novel real-time autonomous dynamic reconfiguration (ADR) method to reduce the cost of power loss and switch action of distribution network based on the deep learning (DL) algorithm that can be decision-making from the historical control dataset and the real- time system state.

20 citations

Journal ArticleDOI
TL;DR: The performance comparison of MPSO and conventional particle swarm optimization in terms of voltage profile and active and reactive power loss has been conducted and it has been found that the proposed method (MPSO) is more effective to enhance the performance of radial distribution systems.
Abstract: This paper presents simultaneous radial distribution network reconfiguration and switched capacitor bank allocation to enhance the performance of distribution systems. The paper primarily targets m...

10 citations


Cites background or methods from "Reconfiguration of distribution sys..."

  • ...Loop1: (Rajalakshmi et al., 2017; Landeros, 2018; Kouzou & Mohammedi, 2015; Kargar and Maleki (yyyy); Kumar, 2017; Zhang et al., 2012; Esmaeilian and Fadaeinedjad, 2015; Tahir et al., 2018; Alrashidi et al., 2010), Loop2: (Niazi & Lalwani, 2017; Ma et al., 2012; Rezaei and Vakilian, 2010; Raut &…...

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  • ...Additionally, the resistance of distribution lines (proportional to power losses) is extremely considerable when compared with transmission line resistance counterparts (Rajalakshmi et al., 2017)....

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  • ...The research works reviewed in Rajalakshmi et al. (2017), Kouzou and Mohammedi (2015), Zhang et al. (2012), Raut and Mishra (2018), and Sajir et al. (2017) demonstrated that power loss and poor voltage profile substantially affect the performance of distribution systems....

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  • ...Rajalakshmi et al. (2017) presented a new technique to alter distribution system topology using loss sensitivity factor (LSF) for deciding the best switch combinations....

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Proceedings ArticleDOI
13 Jul 2020
TL;DR: An improved temporal constrained hierarchical clustering approach considering the temporal constraint is used to divide the operating status of the distribution network into multiple time intervals according to the similarity of loads and the output power of distributed generations.
Abstract: For the dynamic reconfiguration problem of distribution networks, the handling of switching cost constraint and the division of time period are the two key aspects that affect the performance of the reconfiguration algorithm. In this paper, an improved temporal constrained hierarchical clustering algorithm for dynamic reconfiguration of distribution networks is proposed. Firstly, the improved hierarchical clustering approach considering the temporal constraint is used to divide the operating status of the distribution network into multiple time intervals according to the similarity of loads and the output power of distributed generations (DGs). The dynamic reconfiguration of distribution networks is then transformed into multiple single-stage static reconfiguration problems, and the cluster center is used to approximately represent the load state and DG output state of the period. In order to reduce the number of infeasible solutions and poor solutions, a coding method based on heuristic rules to reduce the solution space of distribution network reconfiguration is proposed. An improved fireworks algorithm based on heuristic rules is proposed to solve the reconfiguration problem. Finally, a modified IEEE-33 test system is used to verify the validity of the proposed method.

3 citations


Cites methods from "Reconfiguration of distribution sys..."

  • ...2) By comparing the results of IHSA, FWA, and IFWA, the improved fireworks algorithm based on heuristic rules could find the optimal reconfiguration solutions in a much shorter time....

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  • ...Then, an improved fireworks algorithm based on heuristic rules (H-IFWA) is proposed to solve each single-stage DNR problem....

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  • ...The proposed H-IFWA method greatly reduces the solution space by using heuristic rules....

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  • ...V. TEST RESULTS A. Verification of Coding Method and FWA Performance The modified IEEE-33 test system as shown in Fig....

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  • ...IFWA reduces the solution space by generating adaptive load matrix, which avoid invalid solutions....

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Book ChapterDOI
22 Oct 2019
TL;DR: In this article, the authors proposed a load-balancing model using a fuzzy logic tool for the interpretation of the dynamic behavior of the loads connected in the system and the optimization of the best allocation of single-phase consumer units with an algorithm based on the simplex model.
Abstract: Charge imbalance is common events in electrical distribution systems, which are introduced by the irregular allocation of single-phase loads by the phases that make up the three-phase power distribution. The direct consequence of this imbalance is the drop in operating performance and the reduction in the useful life of network assets (transformers, cables, etc.), as well as affecting the quality of energy distributed from a product standpoint over distances from active sources of the distribution circuits, therefore voltage drops are present. The technique used to correct voltage drops is to redistribute the loads more evenly, but this activity is not an easy task and almost always the effectiveness of the way it is performed in most utilities is questionable, including incurring infringement claims. Quality indicators are inadequate supply voltage level at delivery points and customer connection. The model proposed in this work has the aid of the load-balancing task, using a fuzzy logic tool for the interpretation of the dynamic behavior of the loads connected in the system and the optimization of the best allocation of single-phase consumer units with an algorithm based on the simplex model. Both decisions making with fuzzy logic and distribution were simulated with data provided by the local concessionaire Eletrobras Amazonas through the grid management system.
References
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Journal ArticleDOI
01 Feb 2001
TL;DR: A new heuristic algorithm, mimicking the improvisation of music players, has been developed and named Harmony Search (HS), which is illustrated with a traveling salesman problem (TSP), a specific academic optimization problem, and a least-cost pipe network design problem.
Abstract: Many optimization problems in various fields have been solved using diverse optimization al gorithms. Traditional optimization techniques such as linear programming (LP), non-linear programming (NL...

5,136 citations


"Reconfiguration of distribution sys..." refers methods in this paper

  • ...HSA was first invented by Geem and Kim[4]....

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  • ...A. Improved Harmony Search Algorithm HSA was first invented by Geem and Kim[4]....

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Journal ArticleDOI
TL;DR: This approach is oriented toward applications in three phase distribution system operational analysis rather than planning analysis, and the solution method is the optimally ordered triangular factorization Y/sub BUS/ method (implicit Z/ sub BUS/ Gauss method) which has very good convergence characteristics on distribution problems.
Abstract: This approach is oriented toward applications in three phase distribution system operational analysis rather than planning analysis. The solution method is the optimally ordered triangular factorization Y/sub BUS/ method (implicit Z/sub BUS/ Gauss method) which not only takes advantage of the sparsity of system equations but also has very good convergence characteristics on distribution problems. Detailed component models are needed for all system components in the simulation. Utilizing the phase frame representation for all network elements, a program called Generalized Distribution Analysis Systems, with a number of features and capabilities not found in existing packages, has been developed for large-scale distribution system simulations. The system being analyzed can be balanced or unbalanced and can be a radial, network, or mixed-type distribution system. Furthermore, because the individual phase representation is employed for both system and component models, the system can comprise single, double, and three-phase systems simultaneously. >

492 citations


"Reconfiguration of distribution sys..." refers background in this paper

  • ...Background Distribution systems hold a significant position in the power system and it is the main point that links the bulk power and consumers [5]....

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Journal ArticleDOI
TL;DR: An improved tabu search (ITS) algorithm for loss-minimization reconfiguration in large-scale distribution systems and numerical results well demonstrate the validity and effectiveness of the proposed ITS algorithm.

485 citations


"Reconfiguration of distribution sys..." refers background in this paper

  • ...The shunt admittance is denoted by Ykl at bus k to the ground [9]....

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Journal ArticleDOI
TL;DR: This study proposes a novel derivative for discrete design variables based on a harmony search algorithm and shows how this new stochastic derivative works in the bench-mark function and fluid-transport network design.

280 citations


"Reconfiguration of distribution sys..." refers background in this paper

  • ...Where rand() is a uniformly distributed random number between 0 and 1 and Xi is the set of the possible range of values for each decision variable[7]....

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Book ChapterDOI
27 Aug 2005
TL;DR: The HS was applied to a TSP-like NP-hard Generalized Orienteering Problem (GOP) which is to find the utmost route under the total distance limit while satisfying multiple goals and showed that the algorithm could find good solutions when compared to those of artificial neural network.
Abstract: In order to overcome the drawbacks of mathematical optimization techniques, soft computing algorithms have been vigorously introduced during the past decade. However, there are still some possibilities of devising new algorithms based on analogies with natural phenomena. A nature-inspired algorithm, mimicking the improvisation process of music players, has been recently developed and named Harmony Search (HS). The algorithm has been successfully applied to various engineering optimization problems. In this paper, the HS was applied to a TSP-like NP-hard Generalized Orienteering Problem (GOP) which is to find the utmost route under the total distance limit while satisfying multiple goals. Example area of the GOP is eastern part of China. The results of HS showed that the algorithm could find good solutions when compared to those of artificial neural network.

229 citations


"Reconfiguration of distribution sys..." refers background in this paper

  • ...These are Harmony memory size (HMS), Harmony memory (HM), Harmony memory considering rate (HMCR), Pitch adjusting rate (PAR), and the number of improvisations or stopping criterion[3]....

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  • ...OBJECTIVE The main objective is to reduce the distribution losses at the receiving end by switching on/off tie-line switches between the buses as per load demands[3]....

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