New Algorithm for Protection of Double Circuit Transmission Lines Using Modal Currents

Unde, Snehal; Gawande, Prashant; Dambhare, Sanjay

doi:10.1109/tpwrd.2019.2906939

Cited by 29 publications

(7 citation statements)

References 26 publications

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“…where t is the service time of the equipment and ∂, β are the scale parameter and shape parameter of Weibull distribution, respectively. The disaster state correction factor is shown in formula (3), which is related to the disaster level s and the geographical distance dg between the current element and the disaster center [15].…”

Section: Dynamic Calculation Of System Failure Probability Ofmentioning

confidence: 99%

Application of Internet of Things Energy System in Dynamic Risk Assessment of Composite Fault of Transmission Line

Liu

Jia

Ding

et al. 2022

Wireless Communications and Mobile Computing

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In order to study the application of Internet of things energy system in complex fault risk dynamic assessment of transmission line. Firstly, the concept of power grid dynamic risk assessment is introduced, and the process of power grid dynamic risk assessment system based on Internet of things is designed. Then, it puts forward how to use the ubiquitous Internet of things multisource data to solve the key problems such as dynamic perception of fault probability, dynamic selection of fault set, dynamic generation of post fault state, and dynamic risk assessment of operation process. Finally, taking the maximum operation mode of a provincial power grid in summer 2013 as an example, this paper selects key 500 kV transmission lines for risk assessment, and the actual power grid example shows that. The power grid comprehensive risk assessment system considering the fault characteristics of transmission lines can effectively predict the fault probability of transmission lines; distinguish the two risks of high loss, low probability, and low loss and high probability; and provide guidance for operators. It is practical and effective.

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Section: Dynamic Calculation Of System Failure Probability Ofmentioning

confidence: 99%

Application of Internet of Things Energy System in Dynamic Risk Assessment of Composite Fault of Transmission Line

Liu

Jia

Ding

et al. 2022

Wireless Communications and Mobile Computing

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“…4) Other available approaches: A reactive power based method, available in [17], can protect parallel lines only for ungrounded faults. The modal current based approach available in [18] for parallel line protection requires reliable communication channel for its operation.…”

Section: B Literature Reviewmentioning

confidence: 99%

Nonunit Protection of Parallel Lines Connecting Solar Photovoltaic Plants

Chowdhury

Paladhi

Pradhan

2023

IEEE Systems Journal

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Fault current control by solar plant converters introduces different fault characteristics compared to conventional synchronous generator based systems resulting in numerous issues to the available protection methods. In this paper, the issues with conventional distance relaying is analyzed while protecting parallel lines connecting solar plant to grid and a new protection method is proposed using local voltage and current data. The proposed non-unit protection method derives positive sequence reactive powers for both lines for different solar plant operating conditions and uses their difference to ensure correct zone-1 protection. For faults during single circuit operation, the method includes an additional scheme comprising of instantaneous zerosequence overcurrent check and delayed distance relaying to derive correct protection decision. Performance of the proposed non-unit protection method is tested for parallel lines connecting solar plant in a 39-bus test system for different situations using PSCAD/EMTDC simulated data and found to be accurate. Comparative assessment reveals the high reliability of the proposed method.

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“…Currently, the protection methods for AC transmission lines primarily rely on traditional relay protection principles, including directional protection, distance protection, and differential protection [ 6 ]. In comparison to traditional AC transmission, the fault characteristics for AC lines in hybrid multi-infeed DC systems change, prompting scholars to research the applicability of traditional relay protection [ 7 , 8 , 9 , 10 , 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Multi-Infeed Receiver Line Longitudinal Protection Scheme Based on Voltage Waveform Comprehensive Distance Similarity

Gao,

Li,

Song

et al. 2024

Sensors

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The coupling of AC and DC power will impact the protective actions on the AC side and pose a threat to the stable operation of the interconnection system. Therefore, a new longitudinal protection method is proposed based on the comprehensive distance similarity of voltage waveforms. Initially, the measured voltage and current data are extracted to calculate the reference voltage, and the voltage waveform fitting is optimized. Subsequently, the Euclidean dynamic time warp (DTW) distance and entropy weight method are utilized to process the voltage waveform, enabling the calculation of its comprehensive distance similarity. This similarity is adopted to determine fault location. A hybrid DC multi-feed AC/DC interconnection system, incorporating a line commutated converter-voltage source converter (LCC-VSC) and a line commutated converter-modular multilevel converter (LCC-MMC), was established in PSCAD, and fault data were simulated and output. The effectiveness of the protection scheme was validated using MATLAB. Simulation results demonstrate that the proposed method can accurately distinguish between faults inside and outside a region. When compared to existing protection methods, it demonstrates superior performance in resisting transition resistance and noise interference, while also mitigating the impact of data asynchronicity. The speed and reliability of the method are further enhanced.

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New Algorithm for Protection of Double Circuit Transmission Lines Using Modal Currents

Cited by 29 publications

References 26 publications

Application of Internet of Things Energy System in Dynamic Risk Assessment of Composite Fault of Transmission Line

Application of Internet of Things Energy System in Dynamic Risk Assessment of Composite Fault of Transmission Line

Nonunit Protection of Parallel Lines Connecting Solar Photovoltaic Plants

Hybrid Multi-Infeed Receiver Line Longitudinal Protection Scheme Based on Voltage Waveform Comprehensive Distance Similarity

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