Photo by Dave Hoefler on Unsplash

Fire hazards from malfunctioning electrical infrastructure are a serious risk, especially in systems that generate, store, or distribute energy. These hazards can arise from renewable energy sources like solar panels and wind farms, energy storage systems such as lithium-ion batteries, and monitoring tools like smart meters.

Power Lines and Wildfires: A Growing Concern

Damaged electrical powerline infrastructure poses a significant fire risk. When these components fail, the consequences can be severe.

Fire Risks in Renewable Energy Systems

•Can Solar Panels Catch Fire?

While fires caused by faulty solar installations are relatively uncommon when systems are properly installed and maintained, they can still occur. Some common causes include improper wiring, faulty or substandard components, inverter malfunctions, overloading circuits, and DC arc faults. Hot spots on solar panels and inadequate grounding can also increase fire risk. Environmental factors such as rodent damage, debris accumulation, and extreme weather further contribute to potential hazards. Proper grounding is essential for solar panel safety.

• Why Do Lithium-Ion Batteries Overheat?

Lithium-ion batteries used in solar energy storage systems are generally safe but can pose fire risks if not properly installed or managed. Factors such as thermal runaway, physical damage, electrical short circuits, overcharging, inadequate ventilation, and the use of low-quality batteries can lead to overheating and fires. High-risk scenarios include improper installation, system overloading, and aging batteries prone to failure. Reports of residential and utility-scale battery fires highlight the importance of rigorous safety protocols in these systems. Recent incidents and safety concerns regarding lithium-ion batteries highlight the importance of safety as highlighted in this article.

• Wind Turbines and Fire: Risks & Prevention

Wind farms with malfunctioning equipment can also pose fire risks due to overheating components, electrical faults, gearbox failures, lightning strikes, and combustible turbine materials. If energy storage systems, such as lithium-ion batteries, are integrated into wind farms, they bring additional fire hazards that require proper maintenance and monitoring. Implementing fire detection and suppression systems is crucial in mitigating these risks. The Scroby Sands Incident and its lessons about wind turbine fires.

• Are Smart Meters a Fire Risk?

Although rare, electrical smart meters have been linked to fires due to improper installation, defective equipment, overloaded circuits, and environmental damage. Power surges, in particular, pose a risk by stressing electrical components beyond their capacity, potentially causing overheating, arcing, or circuit board damage. Mitigation strategies include professional installation, regular inspections, and surge protection devices.

In 2014, the Saskatchewan government ordered its power utility SaskPower to remove 105,000 so-called smart meters installed at homes and businesses across the province, following concerns about eight unexplained fires associated with the units. Read more about the incident here.

How Malfunctioning Electrical Infrastructure Could Lead to Fire Hazards

Photo by Andrey Metelev on Unsplash

Power Lines and Wildfires: A Growing Concern

In the Pacific Palisades area of Los Angeles, speculation has arisen regarding whether a high-voltage transmission tower sparked the deadly Eaton Fire. Reports indicate a temporary surge in electrical current in the area before the fire started, possibly due to a “fault” on a line elsewhere in the region’s transmission network. Southern California Edison (SCE) has reported equipment issues near the fire’s origin, though the official cause remains under investigation (NBC News). A lawsuit has also surfaced, citing video evidence of sparks in the area (CNN).

2017 CA Fire

Edison is also under scrutiny regarding the destructive 2017 CA Fire, in which witnesses reported a snapped line on a high-voltage transmission tower. While Edison initially denied involvement, federal investigations suggest the utility may have suppressed evidence related to the fire (Fire Engineering).

How to Prevent Electrical Fires in Energy Systems

As renewable energy systems continue to expand, addressing these fire hazards is critical. Implementing stringent safety protocols, regular maintenance, and the use of high-quality components can significantly reduce risks. Proper grounding, installation, and environmental protection measures can enhance the safety and reliability of energy systems, ultimately preventing electrical fires and their devastating consequences.

The post Fire Hazards: Malfunctioning Electrical Infrastructure appeared first on EMFSA.

Abstract

Infrasound from a 60‐turbine wind farm was found to propagate to distances up to 90 km under nighttime atmospheric conditions. Four infrasound sensor arrays were deployed in central New Mexico in February 2014; three of these arrays captured infrasound from a large wind farm. The arrays were in a linear configuration oriented southeast with 13, 54, 90, and 126 km radial distances and azimuths of 166°, 119°, 113°, and 111° from the 60 1.6 MW turbine Red Mesa Wind Farm, Laguna Pueblo, New Mexico, USA. Peaks at a fundamental frequency slightly below 0.9 Hz and its harmonics characterize the spectrum of the detected infrasound. The generation of this signal is linked to the interaction of the blades, flow gradients, and the supporting tower. The production of wind‐farm sound, its propagation, and detection at long distances can be related to the characteristics of the atmospheric boundary layer. First, under stable conditions, mostly occurring at night, winds are highly stratified, which enhances the production of thickness sound and the modulation of other higher‐frequency wind turbine sounds. Second, nocturnal atmospheric conditions can create low‐altitude waveguides (with altitudes on the order of hundreds of meters) allowing long‐distance propagation. Third, night and early morning hours are characterized by reduced background atmospheric noise that enhances signal detectability. This work describes the characteristics of the infrasound from a quasi‐continuous source with the potential for long‐range propagation that could be used to monitor the lower part of the atmospheric boundary layer.

https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2014JD022821

©2015. American Geophysical Union. All Rights Reserved.

The post On infrasound generated by wind farms and its propagation in low‐altitude tropospheric waveguides appeared first on EMFSA.

 https://doi.org/10.1111/1365-2664.13799

Win-win for wind energy and eagles

06 January 2021

By BES Press Office

Researchers create new tool that allows wind turbine developers to minimise risk of collisions with eagles. The findings are published in the Journal of Applied Ecology. https://www.britishecologicalsociety.org/win-win-for-wind-energy-and-eagles/

Ralston Paton, S., Smallie J., Pearson A., and Ramalho R. 2017. Wind energy’s impacts on birds in South Africa:

A preliminary review of the results of operational monitoring at the first wind farms of the Renewable Energy Independent Power Producer Procurement
Programme in South Africa.

BirdLife South Africa Occasional Report Series No. 2. BirdLife South Africa, Johannesburg, South Africa

https://www.birdlife.org.za/wp-content/uploads/2018/06/Wind-Energy-and-Birds-Impacts.pdf

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