New reactive power flow tracing and loss allocation algorithms for power grids using matrix calculation

Enshaee, Ali; Enshaee, Parisa

doi:10.1016/j.ijepes.2016.11.010

Cited by 18 publications

(11 citation statements)

References 32 publications

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“…As can be seen from previous studies [26][27][28][29][30][31], when a transmission line is disconnected or removed from the power network, the power is usually transferred to other paths connected with the two-end nodes of the removed line, and mainly along the paths with short electrical distances, as is shown in Figure 2. The topological analysis-based method can provide a quick and effective way to identify the network structure and find propagation paths of power flow transfer [34].…”

Section: Location Of Sensitive Regions With Caamentioning

confidence: 95%

“…where LODF i m (g, d) is the power increment of line m when unit power is transferred between generator g and load d, and a fault happens on line i; P gd is the power flow from generator g to load d, as calculated by the power flow tracing method [31]. Considering the reverse overload, the change of power can be calculated as:…”

Section: The Index Of Fault Flow Distributionmentioning

confidence: 99%

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Identification of Critical Transmission Lines in Complex Power Networks

Wang

Nechifor

et al. 2017

Energies

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Growing load demands, complex operating conditions, and the increased use of intermittent renewable energy pose great challenges to power systems. Serious consequences can occur when the system suffers various disturbances or attacks, especially those that might initiate cascading failures. Accurate and rapid identification of critical transmission lines is helpful in assessing the system vulnerability. This can realize rational planning and ensure reliable security pre-warning to avoid large-scale accidents. In this study, an integrated "betweenness" based identification method is introduced, considering the line's role in power transmission and the impact when it is removed from a power system. At the same time, the sensitive regions of each line are located by a cyclic addition algorithm (CAA), which can reduce the calculation time and improve the engineering value of the betweenness, especially in large-scale power systems. The simulation result verifies the effectiveness and the feasibility of the identification method.

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Section: Location Of Sensitive Regions With Caamentioning

confidence: 95%

Section: The Index Of Fault Flow Distributionmentioning

confidence: 99%

Identification of Critical Transmission Lines in Complex Power Networks

Wang

Nechifor

et al. 2017

Energies

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“…Scientific articles analyzed: [ 6 , 7 , 10 , 23 , 27 , 29 , 30 , 37 , 38 , 39 , 40 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 , 98 ].…”

Section: Main Textunclassified

Optimal reactive power compensation in electrical distribution systems with distributed resources. Review

Téllez

López

Isaac

et al. 2018

Heliyon

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In this paper an exhaustive bibliographical revision of the mathematical methods used for the optimal selection and location of reactive power compensating elements is developed, the results obtained by different authors for different objective functions are analyzed and a scientific problem in the conflict that the electric variables show when analyzed individually is identified; thus demonstrating the need to analyze this problem in a multi-criteria way and taking into account topologies of distribution grids with distributed generation and energy storage. This research demonstrates that reactive power compensation in distribution grids with distributed resources is a problem that must be analyzed from multiple criteria that consider several objective functions to be optimized; thus achieving a global solution that contemplates an optimal location and dimensioning of reactive power compensating elements that contribute to the joint improvement of the voltage profiles, minimization of power losses, harmonic mitigation, increased line capacity, voltage stability and power factor improvement, all of them to a minimum investment cost. A theoretical heuristic is also proposed to solve the described problem, based on the multicriteria optimization method.

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“…In this condition, the load node voltages will be V L = Z LL I L (7) With N G the number of generation nodes and N L the number of load nodes, generation node voltages can also be expressed as V G = I L (8) The branch currents can be calculated as follows:…”

Section: Load Lossmentioning

confidence: 99%

Restructured Power System: Transmission Loss Allocation Between Generators and Loads Using Innovative Mathematical Approach

2017

IJAERD

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New reactive power flow tracing and loss allocation algorithms for power grids using matrix calculation

Cited by 18 publications

References 32 publications

Identification of Critical Transmission Lines in Complex Power Networks

Identification of Critical Transmission Lines in Complex Power Networks

Optimal reactive power compensation in electrical distribution systems with distributed resources. Review

Restructured Power System: Transmission Loss Allocation Between Generators and Loads Using Innovative Mathematical Approach

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