Day: July 16, 2021💾

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Mitigating the risk of fire on utility scale solar facilities

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Mitigating the risk of fire on utility scale solar facilities

The average sized 100MW solar farm hosting around 300,000 to +400,000 solar panels (modules) will generally have over 1,000,000 physical made electrical terminations. Each one of these terminations operates at around 1500 Volts and each termination could fail. 

Electrical equipment failure is well known to be linked to situations where we can observe abnormally high temperatures. Fire, sparking, arching or melting exposes electrical equipment to further damage and degradation exacerbated as moisture ingress occurs. Electrical failure can occur due to various factors and although the commonly seen issue will generally arise due to high resistive joints it is not uncommon to observe how the environment impacts equipment overtime. Electrical termination temperatures can reach over 120° Celsius, under these conditions, equipment will begin to deteriorate, over time plastics will have already begun to deform or melt and visible signs or smells will be present. Mismanagement, poor quality equipment and installation practices or lack of scheduled maintenance is generally what leads to these situations. Thorough and regular maintenance procedures can control these issues including addressing performance degradation, system dropouts, inverter failure/faults and lost yield. 

Goats and Soda : NPR

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Cancer Risks Increase With Alcohol Use, Leading To Over 740,000 Cases Last Year : Goats and Soda : NPR

"Fewer than one in three Americans recognize alcohol as a cause of cancer," says Harriet Rumgay, researcher at the International Agency for Research on Cancer, the specialized cancer agency of the World Health Organization. "That's similar in other high-income countries, and it's probably even lower in other parts of the world."

A new study shows just how much of a risk drinking can be. At least 4% of the world's newly diagnosed cases of esophageal, mouth, larynx, colon, rectum, liver and breast cancers in 2020, or 741,300 people, can be attributed to drinking alcohol, according to a study in the July 13 edition of Lancet Oncology. Men accounted for three-quarters of alcohol-related cancers. Of the 172,600 alcohol-related cancer cases diagnosed in women, the vast majority, or 98,300 cases, were breast cancer.
Thematic Map: New York Electric Grid

NPR

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COVID-19 Deaths Are Rising, And 99% Of Them Are People Who Are Unvaccinated : NPR

The death rate from COVID-19 in the U.S. is rising steadily for the first time in months as the nation grapples with a renewed burst of cases in what's become "a pandemic of the unvaccinated," the head of the Centers for Disease Control and Prevention said Friday.

The seven-day average of new cases has increased by nearly 70% to almost 30,000 per day; hospitalizations are up 36%. And deaths from the virus have risen steadily in recent days, reversing a months-long downward trend that began in mid-January.