Long-distance transmission conductor condition sensing based on distributed fiber optic sensing technology
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Boyan Jia
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Yixin Wang
Abstract
The existing long-distance transmission line perception mainly focuses on the measurement and analysis of electrical parameters. When the line is subject to wind vibration, icing or galloping, the changes of electrical parameters are not obvious and difficult to capture, resulting in poor performance of long-distance transmission line fault state perception. In this regard, the long-distance transmission line condition sensing based on distributed optical fiber sensing technology is studied. This method designs corresponding sensing methods for four working conditions: using the back Brillouin scattering sensor and phase sensitive Rayleigh scattering sensor in the optical fiber sensing technology to form a multi parameter distributed optical fiber sensing device, which is used to sense the surface temperature, vibration, strain and other data of the long-distance transmission line; By analyzing the linear relationship between fiber Brillouin frequency shift and Brillouin power and fiber strain and temperature, the sensing results of icing thickness of long-distance transmission lines are obtained; By calculating the amplitude and phase information of the detection signal, the sensing results of long-distance transmission line vibration are obtained; By calculating the time difference of polarization mutation signal at both ends of long-distance transmission line, combined with the propagation speed of optical signal and the length of long-distance transmission line, the perception result of lightning fault location of long-distance transmission line can be obtained. The experimental results show that this method can more accurately collect the real-time operation data of long-distance transmission lines, and can effectively perceive the galloping, wind vibration and lightning fault location of long-distance transmission lines.
Funding source: The Science and Technology Project of State Grid Hebei Electric Power Co., Ltd.
Award Identifier / Grant number: kj2023-007
Acknowledgments
The research was supported by the “Science and Technology Project of State Grid Hebei Electric Power Co., Ltd. (Grant number: kj2023-007).”
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Research ethics: Not applicable.
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Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Competing interests: The authors state no conflict of interest.
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Research funding: The research was supported by “the Science and Technology Project of State Grid Hebei Electric Power Co., Ltd. (Grant number: kj2023-007).”
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Data availability: Not applicable.
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Articles in the same Issue
- Frontmatter
- Research Articles
- Improving islanded distribution system stability with adaptive decision-making framework
- Sensorless control method of induction motors with new feedback gain matrix and speed adaptive law for low speed range
- An improved CB-DPWM strategy with NP voltage balance and switching loss reduction for 3-L NPC converter
- Single-ended protection scheme for three-terminal hybrid DC transmission system based on refractive coefficients
- Long-distance transmission conductor condition sensing based on distributed fiber optic sensing technology
- Data integrity cyber-attack mitigation using linear quadratic regulator based load frequency control in hybrid power system
- Investigation of DG units influence on 66 kV sub-transmission system network considering region load growth: a case study
- Influence of increasing Integration of Solar photovoltaic on Small Signal and Transient stability of Nigeria Power System
- Implementation of SOC-based power management algorithm in a grid-connected microgrid with hybrid energy storage devices
- Experimental studies on insulating oils for power transformer applications
- Power distribution system restoration based on soft open points and islanding by distributed generations
- Power coordination and control of DC Microgrid with PV and hybrid energy storage system
- An investigation on NGR failure in Indian smart cities while replacing the existing overhead lines by underground cables
