A feasibility study of live working in Turkish electricity distribution system

Nasibov, Fuad; Yorukoglu, Sinan; Gül, Ömer; Çildarul, Recep

doi:10.1109/icolim.2017.7964151

Cited by 3 publications

(2 citation statements)

References 1 publication

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“…For the live working of the distribution network, the operating point voltage needs to be kept below the safe voltage. However, due to the existence of the measurement distance error at the zero-potential live working point, the safety of the live working operator is seriously jeopardized [2][3] . Therefore, the research on measuring the distance error of the zero potential live working point has received more and more attention and attention.…”

Section: Introductionmentioning

confidence: 99%

Effect of measuring distance error on working phase voltage at zero potential live working point

Zhu

Wang

et al. 2020

E3S Web Conf.

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When the live working is carried out in the distribution network, the zero-potential charging operation is often used. The safety of zero-potential live working is closely related to the measurement distance error. The influence of the measurement error of the zero-potential live working point on the operating phase voltage needs to be studied. Based on the Floyd algorithm, a method for calculating the shortest electrical distance from the operating point to the substation is proposed. The sub-station is centered on the branch nodes of the line to form the distance matrix, and the Floyd algorithm is used to calculate the shortest electrical distance from the working point to the substation. The working phase injection voltage is further calculated based on the zero phase potential characteristics of the operating phase. Finally, based on the PSCAD, the system model is established. The simulation concludes that the distance between the substation and the working point is less than 20m, and the operating point voltage can still be below the safe voltage.

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Section: Introductionmentioning

confidence: 99%

Effect of measuring distance error on working phase voltage at zero potential live working point

Zhu

Wang

et al. 2020

E3S Web Conf.

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“…With the rapid development of China's power grid and the continuous improvement of power supply reliability requirements [1], the research and standardization work of the live working technology has become a new development and breakthrough [2]. If the fault cannot be removed within a short time, it would affect the reliability of the power supply and the quality of the power supply [3][4].…”

Section: Introductionmentioning

confidence: 99%

New Method for Zero Potential Non-stop Operation of Distribution Network Based on Injection Current

Zhu¹,

Wang²,

Qi³

et al. 2019

JEEE

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In the case of live working in the distribution network, a live method of live working that satisfies the requirements for personal safety and power supply reliability needs to be studied, because of the serious safety accidents caused by misuse and weak safety awareness. Based on the zero potential characteristics of the operating point, a new method based on injection current for zero-potential uninterrupted operation in distribution network is proposed. The Floyd algorithm is used to calculate the shortest electrical distance from the live working point to the substation, and the capacitance value of the ground is measured by the resonant grounding system, and the current value injected further to the neutral point is calculated. By regulating the zero-sequence voltage, the neutral point voltage is equal to the difference between the operating phase line voltage drop and the operating phase power supply voltage, ensuring that the operating point voltage is zero. Finally, based on the PSCAD simulation software, the system model is established. The simulation verifies the feasibility of the proposed method by comparing the voltage curves of the working phase.

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Analysis of the influence of zero potential live operation on protection

Wang

Zhu

et al. 2020

E3S Web Conf.

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In the case of live working in the distribution network, a live method of live working that satisfies the requirements for personal safety and power supply reliability needs to be studied, because of the serious safety accidents caused by misuse and weak safety awareness. Based on the analysis of singlephase buck symmetrical operation characteristics, a new method of zero-potential live working of distribution network based on injection current is proposed. By injecting current into the neutral point, the zero-sequence voltage is regulated so that the neutral point voltage is equal to the value of the operating phase line voltage drop minus the operating phase power supply voltage, ensuring that the operating point voltage is zero. Based on the principle of current fast-break protection and time-limited overcurrent protection, it is analyzed that the zero-potential uninterruptible operation method of the distribution network will not affect the distribution network protection. Finally, the system model is established based on the MATLAB. The simulation verifies the feasibility of the method by the operating phase voltage curve and the correctness of the protection impact analysis by comparing the non-working phase current curve with the protection setting.

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A feasibility study of live working in Turkish electricity distribution system

Cited by 3 publications

References 1 publication

Effect of measuring distance error on working phase voltage at zero potential live working point

Effect of measuring distance error on working phase voltage at zero potential live working point

New Method for Zero Potential Non-stop Operation of Distribution Network Based on Injection Current

Analysis of the influence of zero potential live operation on protection

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