A hybrid
            <scp>solar‐RF</scp>
            energy harvesting system based on tree‐shaped antenna array

Wang, Tao; Huang, Keh‐Ning; Liu, Wenbo; Hou, Jing; Zhang, Zhuoyue

doi:10.1002/mmce.23301

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…To supply a WSN using a solar energy harvester, it is necessary to utilize energy-storage solutions, such as batteries or capacitors, that require replacement [79]. In [80], a line-current transformer with energy-harvesting windings and a solar PV system was used to monitor the power transmission lines. The proposed hybrid system could offer a stable power supply of 3.3 V and 120 µA on average.…”

Section: Energy Harvesting From Solarmentioning

confidence: 99%

Monitoring Technologies for HVDC Transmission Lines

Laninga,

Nasr Esfahani,

Ediriweera

et al. 2023

Energies

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HVDC transmission systems are becoming more prevalent because of the advantages they offer. They are more efficient and environmentally friendly and are becoming preferred in distributed power generation. The reliable operation of HVDC transmission lines requires distributed, online monitoring, which is not as well-developed as those in an HVAC system. The advancement of HVDC systems will require online monitoring that provides information on the operating and environmental conditions, mechanical stress on the conductors and the structure, vegetation clearance, and security of the system. This perspective paper provides a thorough overview of the state-of-the-art technologies that are applicable to the monitoring of HVDC transmission lines. The challenges and future direction in the development of sensors for HVDC applications are highlighted. One of the key challenges unique to HVDC transmission lines is energy harvesting from the transmission line conductors to provide power for the monitoring equipment. This paper reviews the potential technologies for energy harvesting from HVAC transmission lines and their suitability for employment in HVDC transmission lines.

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Section: Energy Harvesting From Solarmentioning

confidence: 99%

Monitoring Technologies for HVDC Transmission Lines

Laninga,

Nasr Esfahani,

Ediriweera

et al. 2023

Energies

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“…For example, in [41,46], a harvester combining solar and magnetic field EH is proposed for WSNs intended for smart grid applications, where the magnetic field harvester is based on a multi-turn coil surrounding a magnetic core. In [47], a hybrid solar-RF energy harvesting system combining a solar panel and an antenna is proposed.…”

Section: Solar Energy Harvestingmentioning

confidence: 99%

Energy Harvesting Methods for Transmission Lines: A Comprehensive Review

2022

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Humanity faces important challenges concerning the optimal use, security, and availability of energy systems, particularly electrical power systems and transmission lines. In this context, data-driven predictive maintenance plans make it possible to increase the safety, stability, reliability, and availability of electrical power systems. In contrast, strategies such as dynamic line rating (DLR) make it possible to optimize the use of power lines. However, these approaches require developing monitoring plans based on acquiring electrical data in real-time using different types of wireless sensors placed in strategic locations. Due to the specific conditions of the transmission lines, e.g., high electric and magnetic fields, this a challenging problem, aggravated by the harsh outdoor environments where power lines are built. Such sensors must also incorporate an energy harvesting (EH) unit that supplies the necessary electronics. Therefore, the EH unit plays a key role, so when designing such electronic systems, care must be taken to select the most suitable EH technology, which is currently evolving rapidly. This work reviews and analyzes the state-of-the-art technology for EH focused on transmission lines, as it is an area with enormous potential for expansion. In addition to recent advances, it also discusses the research needs and challenges that need to be addressed. Despite the importance of this topic, there is still much to investigate, as this area is still in its infancy. Although EH systems for transmission lines are reviewed, many other applications could potentially benefit from introducing wireless sensors with EH capabilities, such as power transformers, distribution switches, or low- and medium-voltage power lines, among others.

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High‐Gain Boost Converter Based Energy Harvesting Method for the Ultra‐Low Voltage Difference of HVDC Transmission Line

Zhang,

Nie,

Xiao

et al. 2024

Circuit Theory & Apps

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Online monitoring sensors are crucial for ensuring the long‐term stable operation of high‐voltage direct current (HVDC) transmission systems. However, ensuring a sustainable and reliable energy supply for these sensors in the HVDC transmission line is extremely challenging. Energy harvesting is an efficient solution to meet the energy supply needs of self‐powered online monitoring sensors. This work proposes a novel method for harvesting energy from the ultra‐low voltage difference of HVDC transmission line using a high‐gain boost converter. Firstly, the structure of the energy harvesting system is proposed. Then, the mechanism by which the gain of the boost converter is easily affected by parasitic parameters of the circuit and device under ultra‐low input voltage is analyzed. A method for automatically stabilizing the output voltage of the boost converter using a post‐stage energy management circuit is proposed. This method avoids the use of closed‐loop control circuits, which would otherwise increase losses. Finally, the boost converter with high gain is designed to elevate the ultra‐low voltage difference to a higher voltage, providing sufficient power for the online monitoring sensors. The effectiveness of the proposed method has been verified through simulations and experiments, demonstrating that the energy harvesting system can extract energy from a voltage difference as low as 35 mV. Additionally, the system can produce a stable output power of up to 128 mW when the voltage difference is 100 mV.

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A hybrid solar‐RF energy harvesting system based on tree‐shaped antenna array

Cited by 5 publications

References 32 publications

Monitoring Technologies for HVDC Transmission Lines

Monitoring Technologies for HVDC Transmission Lines

Energy Harvesting Methods for Transmission Lines: A Comprehensive Review

High‐Gain Boost Converter Based Energy Harvesting Method for the Ultra‐Low Voltage Difference of HVDC Transmission Line

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