Active distribution network protection scheme based on area current direction

Zhao, Shanglin; Tang, Tuo; Wang, Deshun; Gao, Rendong; Wu, Zheng-Mao

doi:10.1109/cieec.2017.8388454

Cited by 2 publications

(1 citation statement)

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“…Unfortunately, the coverage of voltage transformers in medium and low voltage distribution networks is not complete, which limits the application of the above methods that need to measure voltage. In Ref (Zhao et al, 2017) an ADN protection method based on the direction of the regional current is proposed. This method cannot accurately identify the fault location due to the output characteristics of the liquid cooler.…”

Section: Introductionmentioning

confidence: 99%

Differential protection scheme for distribution network with distributed generation based on improved feature mode decomposition and derivative dynamic time warping

Wang,

Song,

Jiang

2024

Front. Energy Res.

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With the progress of communication technology, the cost of optical fiber and 5G continues to decrease, and data transmission becomes more convenient and fast, making it possible to realize differential protection of distribution network by various intelligent algorithms using signal waveforms. Aiming at the problem that the traditional relay protection device can not meet the actual demand when the single-phase ground fault occurs in the distribution network with distributed generation, this paper proposes a new differential protection scheme. The characteristic mode decomposition improved by the whale optimization algorithm is used to decompose the zero-sequence current waveform collected at both ends of the line. Based on the basic principle of current differential protection, the derivative dynamic time warping of the component with the largest fault feature can effectively solve the problem that the grounding current of the distribution network cannot meet the working requirements of the differential protection device, and ensure the safe and stable operation of the system. Finally, based on MATLAB software, the performance of this method is comprehensively evaluated by simulating different fault conditions, so as to ensure the feasibility and accuracy of this method in the case of diversified faults when the distributed generation is used as part of the power supply.

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Section: Introductionmentioning

confidence: 99%