Reliability assessment of distribution system using Petri net for enhancement of situational awareness

Kumari, Rubi; Naick, Bhukya K.; Ghosh, Debomita

doi:10.1016/j.epsr.2023.109739

Cited by 6 publications

(2 citation statements)

References 32 publications

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“…The introduction of distributed generation (DG) further complicates matters by altering both the direction and magnitude of short-circuit currents, resulting in the breakdown of existing coordination systems. This, in turn, impacts the effectiveness and reliability of the protection system, affecting its selectivity, sensitivity, and response speed [1,2]. Due to this bidirectionality, DOCRs are used for discrimination of fault current direction.…”

Section: Introductionmentioning

confidence: 99%

Adaptive protection coordination in microgrid based on nature inspired meta-heuristic optimization algorithm

Kumari,

Naick

2024

Eng. Res. Express

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Ensuring a robust protection system is crucial for safeguarding the integrity of the overall system against abnormalities. Incorporating distributed generation (DG) into the distribution network can introduce fluctuations in fault current levels and directions, potentially causing mismatches in the response of the existing coordination system. This study proposes an adaptive protection coordination scheme designed to accommodate both grid-connected and standalone modes, addressing various fault scenarios. Utilizing a hybrid WCMFO algorithm, optimal relay settings are determined to facilitate effective coordination within a microgrid setup. The proposed method has been analyzed on 9 bus Canadian benchmark system integrated with four DGs. The performance of the proposed method is compared to other optimization techniques to demonstrate its effectiveness. System modelling is conducted using MATLAB/Simulink, and validation is further carried out using industrial ETAP software on a test microgrid system. The analysis extends to evaluating the enhancement in overall system reliability, quantified in terms of Energy not supplied (ENS).

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Section: Introductionmentioning

confidence: 99%

Adaptive protection coordination in microgrid based on nature inspired meta-heuristic optimization algorithm

Kumari,

Naick

2024

Eng. Res. Express

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“…To extract valuable information from massive power grid data and effectively select and utilize it, it is necessary to grasp the internal correlation and law of distribution network data [15] and extract the main factors affecting the operation of the distribution network [16]. On this basis, considering the influence of external environmental conditions of the distribution network [17], the accurate perception of the development status of the initial insulation fault of the distribution network has become a key issue in the analysis and research of the insulation fault of the distribution network [18]. At present, most cities have multiple distribution management systems, including distribution network data acquisition and monitoring systems, distribution automation systems, power grid meteorological information systems, dispatch automation systems, power quality detection, and management systems, geographic information systems, and intelligent public distribution monitoring systems.…”

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confidence: 99%

A Situational Awareness Method for Initial Insulation Fault of Distribution Network Based on Multi-Feature Index Comprehensive Evaluation

Bai,

Liu,

Liu

et al. 2024

ENERGY

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Most ground faults in distribution network are caused by insulation deterioration of power equipment. It is difficult to find the insulation deterioration of the distribution network in time, and the development trend of the initial insulation fault is unknown, which brings difficulties to the distribution inspection. In order to solve the above problems, a situational awareness method of the initial insulation fault of the distribution network based on a multi-feature index comprehensive evaluation is proposed. Firstly, the insulation situation evaluation index is selected by analyzing the insulation fault mechanism of the distribution network, and the relational database of the distribution network is designed based on the data and numerical characteristics of the existing distribution management system. Secondly, considering all kinds of fault factors of the distribution network and the influence of the power supply region, the evaluation method of the initial insulation fault situation of the distribution network is proposed, and the development situation of the distribution network insulation fault is classified according to the evaluation method. Then, principal component analysis was used to reduce the dimension of the training samples and test samples of the distribution network data, and the support vector machine (SVM) was trained. The optimal parameter combination of the SVM model was found by the grid search method, and a multi-class SVM model based on 1-v-1 method was constructed. Finally, the trained multi-class SVM was used to predict 6 kinds of situation level prediction samples. The results of simulation examples show that the average prediction accuracy of 6 situation levels is above 95%, and the perception accuracy of 4 situation levels is above 96%. In addition, the insulation maintenance decision scheme under different situation levels is able to be given when no fault occurs or the insulation fault is in the early stage, which can meet the needs of power distribution and inspection for accurately sensing the insulation fault situation. The correctness and effectiveness of this method are verified.

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A novel approach for techno-economic reliability oriented planning and assessment of droop-control technique for DG allocation in islanded power distribution systems

Soni,

Fernandez

2024

Electric Power Systems Research

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Reliability assessment of distribution system using Petri net for enhancement of situational awareness

Cited by 6 publications

References 32 publications

Adaptive protection coordination in microgrid based on nature inspired meta-heuristic optimization algorithm

Adaptive protection coordination in microgrid based on nature inspired meta-heuristic optimization algorithm

A Situational Awareness Method for Initial Insulation Fault of Distribution Network Based on Multi-Feature Index Comprehensive Evaluation

A novel approach for techno-economic reliability oriented planning and assessment of droop-control technique for DG allocation in islanded power distribution systems

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