Power Flow Analysis of Weakly Meshed Distribution Network Including DG

Al-Sakkaf, A.; Al-Muhaini, Mohammad

doi:10.48084/etasr.2277

Cited by 8 publications

(5 citation statements)

References 11 publications

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“…Load flow is completed on the system model. Load flow analysis was performed using the adaptive Newton Raphson method as shown in Table I [36]. After load flow analysis, the voltage at a bus, its frequency, voltage angle and the generator rotor angle are shown in Table II.…”

Section: Power Flow Studymentioning

confidence: 99%

Transient Stability Analysis of the IEEE-9 Bus System under Multiple Contingencies

Anwar

Hanif

Khan

et al. 2020

Eng. Technol. Appl. Sci. Res.

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The determination of the transient stability of an electric power system is a crucial step in power system analysis. This paper investigates the transient stability of an IEEE-9 bus system consisting of three generators and nine buses. At first, a load flow analysis is conducted in order to determine the pre-fault conditions. Secondly, fault analysis is performed to analyze post fault conditions like the fast fault clearing time and load switching in order to determine the system stability. For transient stability analysis, Euler and Runga methods are compared and applied on the frequency and rotor angle of the system to analyze the system variations under different fault conditions. The simulations were done on the Power World Simulator (PWS) software. It is concluded that Critical Fault Clearing Time (CFCT) is a very important factor in keeping the power system within the stability bounds. A slight increase in Clearing Time (CT) from the critical value causes un-synchronism.

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Section: Power Flow Studymentioning

confidence: 99%

Transient Stability Analysis of the IEEE-9 Bus System under Multiple Contingencies

Anwar

Hanif

Khan

et al. 2020

Eng. Technol. Appl. Sci. Res.

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“…In addition, sweep methods are a viable option for conducting studies on the behavior of a grid with distributed generation integration and the presence of nonlinear devices (2,6,7).…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a Backward/Forward Algorithm Adjusted to a Distribution Network with Nonlinear Loads and a Photovoltaic System

Martinez-Peñaloza,

Ordóñez-Plata,

Osma-Pinto

2023

Ing.

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Context: The backward/forward (BF) algorithm is a sweep-type technique that has recently been used as a strategy for the power flow analysis of ill-conditioned networks. The purpose of this study is to evaluate the performance of the BF algorithm compared to that of a computational tool such as Simulink, with both strategies adjusted to the operating conditions of a distribution network with nonlinear components (loads and photovoltaic system), unbalanced loads, and harmonic distortion in the voltage and current signals. Method: The study case is a low-voltage distribution network with a radial topology, unbalanced loads, and nonlinear components. The BF algorithm is adjusted to consider two approaches of the Norton model: a coupled admittance matrix and a decoupled admittance matrix. The latter is also used in the network model created in Simulink. The performance of the algorithm is evaluated by analyzing 18 operation scenarios defined according to the presence and use intensity of the loads and solar irradiance levels (low and high). Results: In general, the three strategies could successfully determine the waveform and RMS values of the voltage signals with errors of less than 0,8 and 1,3%, respectively. However, the performance of the strategies for the estimation of current signals and power parameters shows errors of 5-300% depending on the level of solar irradiance at which the photovoltaic system operates. Conclusions: The results show that the BF strategy can be used to analyze unbalanced power grids with increasing penetration of renewable generation and the integration of nonlinear devices, but the performance of this strategy depends on the load model applied to represent the behavior of nonlinear devices and generation systems.

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“…A system where electrical connections have been introduced among distribution lines of a dendritic nature is normally referred to as the meshed distribution system (MDS) [15]- [23]. Recently, research and demonstrations are actively being conducted regarding the networked distribution system (NDS), a distribution system that includes the integration of constant reciprocal communication and is optimized for protection coordination [24], [25].…”

Section: Introductionmentioning

confidence: 99%

LSTM-Based Fault Direction Estimation and Protection Coordination for Networked Distribution System

Kim

Chae

et al. 2022

IEEE Access

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While the world's power distribution system resembles an intricate web-like structure, the most conventionally implemented distribution mechanism is the radial distribution system (RDS) where connection points for each distribution line are normally kept open. However, disadvantages regarding the traditional system have led to active research on establishing the networked distribution system (NDS), in which multiple circuits are interconnected with electricity as well as high-speed communication systems. The NDS offers multiple advantages including increased facility utilization, increased hosting capacity, and higher terminal voltage. Conversely, an unsolved issue prevails as the existing protection coordination method designed for the RDS is inadequate for fault occurrences in the NDS due to inaccurate fault direction identification. Hence, there is an urgent need for an alternative protection coordination method that allows high precision fault direction identification through communication. Moreover, the application of various existing technologies is hindered as the distance relay protection coordination algorithm malfunctions in situations where distribution lines are of short length, loads are dispersed onto multiple lines, and integration of distributed generation (DG) is frequent. Therefore, this paper presents a fault direction identification method that uses the waveform of the fault current based on long short-term memory (LSTM) neural network and a communication-based protection coordination scheme that can be applied in fault situations within an NDS.

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Power Flow Analysis of Weakly Meshed Distribution Network Including DG

Cited by 8 publications

References 11 publications

Transient Stability Analysis of the IEEE-9 Bus System under Multiple Contingencies

Transient Stability Analysis of the IEEE-9 Bus System under Multiple Contingencies

Performance Analysis of a Backward/Forward Algorithm Adjusted to a Distribution Network with Nonlinear Loads and a Photovoltaic System

LSTM-Based Fault Direction Estimation and Protection Coordination for Networked Distribution System

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