Equivalent Circuit Parameters of Power Tap-Off from Insulated Shield Wires of High Voltage Transmission Lines at Different Rated Voltages

Qi, Guowei; Zheng, Yuesheng; Xia, Kai; Wu, Wenbin; Liao, Fuwang; Shu, Shengwen

doi:10.1109/ichve.2018.8642003

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…В [7] метод фазных координат использован для оценки электрических параметров двенадцатифазной ЛЭП. Авторы [8] предложили использовать метод фазных координат для определения поперечной емкости ЛЭП высокого и сверхвысокого напряжения. В [9] авторы также учли зависимость сопротивления ЛЭП от частоты.…”

Section: введение unclassified

Introduction of The Capacitive Conductivity of a NonSymmetric Single-Circuit Line with Ground Wire

Panova¹

2021

ESC

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Section: введение unclassified

Introduction of The Capacitive Conductivity of a NonSymmetric Single-Circuit Line with Ground Wire

Panova¹

2021

ESC

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“…Авторы [13] использовали данный метод для исследования влияния наличия грозозащитного троса, изменения частоты в сети и поверхностного эффекта на сопротивление ЛЭП. Также метод фазных координат используется для определения индуктивности и емкости многоцепных ЛЭП [14], линий с изолированными проводниками [15] и ЛЭП разных уровней напряжения на одной опоре [16].…”

Section: электроэнергетикаunclassified

Longitudinal Impedance of a Single-Circuit Power Transmission Line With Two Lightning Protection Cables in the Problem of Remote Fault Location

Panova¹

2021

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One of the most important tasks in remote fault location in a 110 kV+ network is modeling the power lines taking into account the electromagnetic and electrostatic interaction of their conductive elements. A common approach is to use the mathematical models recommended by the guidelines for calculating short-circuit currents for relay protection. However, these models of power transmission lines take into account the geometric mean distance between the wires and the lightning protection cables, which means they average the values of the mutual induction impedances. In cases where wires and cables are located asymmetrically relative to each other, this leads to an overestimation of the zero-sequence impedance of power lines and, as a consequence, to an underestimation of the single-phase short-circuit current. This situation can affect the results of remote fault location. To eliminate this drawback, the article proposes a combined equivalent circuit for a single-circuit power transmission line with two lightning protection cables, based on a combination of methods of phase coordinates and symmetric components. The given equivalent circuit of power transmission lines allows calcula¬ting the mode parameters using the method of symmetric components and, at the same time, simulating those of interest for calculating power lines using phase coordinates.

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“…Reference [18] proposed a new method of designing a low-cost substation to tap power from extrahigh voltage lines to power sparsely populated areas. Reference [19] investigated the equivalent circuit parameters of typical transmission lines at rated voltages from 110 kV to 1000 kV. References [20][21][22] researched the energy harvesting system of wireless sensors to realize the self-power of these nodes.…”

Section: Introductionmentioning

confidence: 99%

Study on Energy Acquisition Scheme and Parameter Optimization for Double-Insulated Ground Wire of Overhead Transmission Lines

Zhang

et al. 2020

Journal of Sensors

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An energy acquisition system for the ground wire of an overhead transmission line can provide a continuous and stable power supply for an on-line monitoring device. Its key issue is how to obtain enough power. To solve this problem, an energy acquisition scheme based on the double-insulated ground wire of an overhead transmission line has been investigated in this study. Three energy acquisition schemes were proposed, equivalent circuit analysis models of the three energy acquisition schemes were established, and the maximum power acquired was theoretically analyzed. The energy acquisition power of the three energy acquisition schemes for different tower-type sizes was also analyzed. A simulation model was built in PSCAD. The effects of load impedance, length of energy acquisition wire, grounding resistance, and load current on the power acquired were analyzed. The research results of this paper provide theoretical guidance for choosing an energy acquisition scheme and for designing key parameters in practice.

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Equivalent Circuit Parameters of Power Tap-Off from Insulated Shield Wires of High Voltage Transmission Lines at Different Rated Voltages

Cited by 4 publications

References 5 publications

Introduction of The Capacitive Conductivity of a NonSymmetric Single-Circuit Line with Ground Wire

Introduction of The Capacitive Conductivity of a NonSymmetric Single-Circuit Line with Ground Wire

Longitudinal Impedance of a Single-Circuit Power Transmission Line With Two Lightning Protection Cables in the Problem of Remote Fault Location

Study on Energy Acquisition Scheme and Parameter Optimization for Double-Insulated Ground Wire of Overhead Transmission Lines

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