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Lightning Protection Systems

“Benjamin Franklin Drawing Electricity from the Sky” 1816 Benjamin West

 

Benjamin Franklin conducted his famous experiment with lightning on June 10, 1752.

He used a kite and a key to demonstrate that lightning was a form of electricity.

This experiment marked an important milestone in understanding the nature of electricity

and laid the foundation for the development of lightning rods and other lightning protection systems.

 

Seasonal extreme weather patterns in the United States, resulting in damages to education facilities and delays in outdoor athletic events — track meets; lacrosse games, swimming pool closures and the like — inspire a revisit of the relevant standards for the systems that contribute to safety from injury and physical damage to buildings: NFPA 780 Standard for the Installation of Lightning Protection Systems

FREE ACCESS

To paraphrase the NFPA 780 prospectus:

  • This document shall cover traditional lightning protection system installation requirements for the following:
       (1) Ordinary structures
       (2) Miscellaneous structures and special occupancies
       (3) Heavy-duty stacks
       (4) Structures containing flammable vapors, flammable gases, or liquids with flammable vapors
       (5) Structures housing explosive materials
       (6) Wind turbines
       (7) Watercraft
       (8) Airfield lighting circuits
       (9) Solar arrays
  • This document shall address lightning protection of the structure but not the equipment or installation requirements for electric generating, transmission, and distribution systems except as given in Chapter 9 and Chapter 12.

(Electric generating facilities whose primary purpose is to generate electric power are excluded from this standard with regard to generation, transmission, and distribution of power.  Most electrical utilities have standards covering the protection of their facilities and equipment. Installations not directly related to those areas and structures housing such installations can be protected against lightning by the provisions of this standard.)

  • This document shall not cover lightning protection system installation requirements for early streamer emission systems or charge dissipation systems.

“Down conductors” must be at least #2 AWG copper (0 AWG aluminum) for Class I materials in structures less than 75-ft in height

“Down conductors: must be at least 00 AWG copper (0000 AWG aluminum) for Class II Materials in structures greater than 75-ft in height.

Related grounding and bonding  requirements appears in Chapters 2 and Chapter 3 of NFPA 70 National Electrical Code.  This standard does not establish evacuation criteria.  

University of Michigan | Washtenaw County (Photo by Kai Petainen)

The current edition is dated 2023 and, from the transcripts, you can observe concern about solar power and early emission streamer technologies tracking through the committee decision making.  Education communities have significant activity in wide-open spaces; hence our attention to technical specifics.

2023 Public Input Report

2023 Public Comment Report

Public input on the 2026 revision is receivable until 1 June 2023.

We always encourage our colleagues to key in their own ideas into the NFPA public input facility (CLICK HERE).   We maintain NFPA 780 on our Power colloquia which collaborates with IEEE four times monthly in European and American time zones.  See our CALENDAR for the next online meeting; open to everyone.

Lightning flash density – 12 hourly averages over the year (NASA OTD/LIS) This shows that lightning is much more frequent in summer than in winter, and from noon to midnight compared to midnight to noon.

Issue: [14-105]

Category: Electrical, Telecommunication, Public Safety, Risk Management

Colleagues: Mike Anthony, Jim Harvey, Kane Howard

More

Installing lightning protection system for your facility in 3 Steps (Surge Protection)

IEEE Education & Healthcare Facility Electrotechnology

Readings: The “30-30” Rule for Outdoor Athletic Events Lightning Hazard

Churches and chapels are more susceptible to lightning damage due to their height and design. Consider:

Height: Taller structures are more likely to be struck by lightning because they are closer to the cloud base where lightning originates.

Location: If a church or chapel is situated in an area with frequent thunderstorms, it will have a higher likelihood of being struck by lightning.

Construction Materials: The materials used in the construction of the building can affect its vulnerability. Metal structures, for instance, can conduct lightning strikes more readily than non-metallic materials.

Proximity to Other Structures: If the church or chapel is located near other taller structures like trees, utility poles, or buildings, it could increase the chances of lightning seeking a path through these objects before reaching the building.

Lightning Protection Systems: Installing lightning rods and other lightning protection systems can help to divert lightning strikes away from the structure, reducing the risk of damage.

Maintenance: Regular maintenance of lightning protection systems is essential to ensure their effectiveness. Neglecting maintenance could result in increased susceptibility to lightning damage.

Historical Significance: Older buildings might lack modern lightning protection systems, making them more vulnerable to lightning strikes.

The risk can be mitigated by proper design, installation of lightning protection systems, and regular maintenance. 

Virginia Tech

Electrical Resource Adequacy

“When buying and selling are controlled by legislation,
the first things to be bought and sold are legislators.”
— P.J. O’Rourke

Our interest lies in closing a technical gap that exists upstream from the building service point and downstream from the utility supply point. Some, not all of it, can be accomplished with titles in the IEEE catalog. Given the strength of vertical incumbents in the electric power domain, we will submit a tranche of reliability concepts into the ASHRAE, NFPA and ICC catalogs — not so much with the expectation that they will be gratefully received — but that our proposals will unleash competitive energies among partisans in the standards setting industry.

Predictive Reliability Analysis of Power Distribution Systems Considering the Effects of Seasonal Factors on Outage Data Using Weibull Analysis Combined With Polynomial Regression

February 2024 Highlights 

Failure Rate Prediction Model of Substation Equipment Based on Weibull Distribution and Time Series Analysis

January 2024 Highlights

Transmission Planning Using a Reliability Criterion

Readings / The Administrative State

In power system engineering, availability and reliability are two important concepts, but they refer to different aspects of the system’s performance.

Reliability:

  • Reliability refers to the ability of a power system to perform its intended function without failure for a specified period under given operating conditions. It is essentially a measure of how dependable the system is.
  • Reliability metrics often include indices such as the frequency and duration of outages, failure rates, mean time between failures (MTBF), and similar measures.
  • Reliability analysis focuses on identifying potential failure modes, predicting failure probabilities, and implementing measures to mitigate risks and improve system resilience.Availability:
  • Availability, on the other hand, refers to the proportion of time that a power system is operational and able to deliver power when needed, considering both scheduled and unscheduled downtime.
  • Availability is influenced by factors such as maintenance schedules, repair times, and system design redundancies.
  • Availability is typically expressed as a percentage and can be calculated using the ratio of the uptime to the total time (uptime plus downtime).
  • Availability analysis aims to maximize the operational readiness of the system by minimizing downtime and optimizing maintenance strategies.

Reliability focuses on the likelihood of failure and the ability of the system to sustain operations over time, while availability concerns the actual uptime and downtime of the system, reflecting its readiness to deliver power when required. Both concepts are crucial for assessing and improving the performance of power systems, but they address different aspects of system behavior.

 

November 2023 Highlights | FERC insight | Volume 10

Determining System and Subsystem Availability Requirements: Resource Planning and Evaluation

Comment: These 1-hour sessions tend to be administrative in substance, meeting the minimum requirements of the Sunshine Act. This meeting was no exception. Access to the substance of the docket is linked here.

Noteworthy: Research into the natural gas supply following Winter Storm Elliot.

December 2022 Winter Storm Elliott Grid Operations: Key Findings and Recommendations (Joint Inquiry)

 

August 14, 2003

 UPDATED POLICIES ON U.S. DECARBONIZATION AND TECHNOLOGY TRANSITIONS

June 15:FERC Finalizes Plans to Boost Grid Reliability in Extreme Weather Conditions

On Monday June 13th, Federal Energy Regulatory Commission commissioners informed the House Committee on Energy and Commerce that the “environmental justice” agenda prohibits reliable dispatchable electric power needed for national power security. One megawatt of natural gas generation does not equal one megawatt of renewable generation. The minority party on the committee — the oldest standing legislative committee in the House of Representatives (established 1795) — appears indifferent to the reliability consequences of its policy.

Joint Federal-State Task Force on Electric Transmission

“Our nation’s continued energy transition requires the efficient development of new transmission infrastructure. Federal and state regulators must address numerous transmission-related issues, including how to plan and pay for new transmission infrastructure and how to navigate shared federal-state regulatory authority and processes. As a result, the time is ripe for greater federal-state coordination and cooperation.”











 

Bibliography:

Natural Gas Act of 1938

Natural Gas Policy Act of 1978

Glossary of Terms Used in NERC Reliability Standards

The Major Questions Doctrine and Transmission Planning Reform

As utilities spend billions on transmission, support builds for independent monitoring

States press FERC for independent monitors on transmission planning, spending as Southern Co. balks

Related:

Homeland Power Security

At the July 20th meeting of the Federal Energy Regulatory Commission Tristan Kessler explained the technical basis for a Draft Final Rule for Improvements to Generator Interconnection Procedures and Agreements, On August 16th the Commission posted a video reflecting changes in national energy policy since August 14, 2003; the largest blackout in American history.

The Eternal Music

“Heard melodies are sweet,
but those unheard are sweeter…”
John Keates (Ode on a Grecian Urn)

Click image

Lively Arts 300

 

Alexis de Tocqueville on the Foundations of American Democracy

Alexis de Tocqueville was born in Paris and came from a prominent lineage, with his father serving as a royalist prefect under the Bourbon restoration.

In 1831, at the age of twenty-five, Alexis de Tocqueville made his fateful journey to America, where he observed the thrilling reality of a functioning democracy. From that moment onward, the French aristocrat would dedicate his life as a writer and politician to ending despotism in his country and bringing it into a new age.



Quotes from Alexis de Tocqueville’s “Democracy in America”:

  1. “The greatness of America lies not in being more enlightened than any other nation, but rather in her ability to repair her faults.”
  2. “Americans are so enamored of equality that they would rather be equal in slavery than unequal in freedom.”
  3. “In democratic ages, human beings rarely sacrifice themselves for one another voluntarily; they almost always do so because they are impelled to by some power outside themselves.”
  4. “Despotism often presents itself as the repairer of all ills suffered, the support of just rights, defender of the oppressed and founder of order.”
  5. “The best laws cannot make a constitution work in spite of morals; morals can turn the worst laws to advantage.”
  6. “I do not know if the people of the United States would vote for superior men if they ran for office, but there can be no doubt that such men do not run.”
  7. “The most dangerous moment for a bad government is when it begins to reform.”
  8. “The Americans combine the notions of Christianity and of liberty so intimately in their minds that it is impossible to make them conceive the one without the other.”
  9. “The will of man is not shattered, but softened, bent, and guided; men are seldom forced by it to act, but they are constantly restrained from acting. Such power does not destroy, but it prevents existence; it does not tyrannize, but it compresses, extinguishes, and stupefies a people, till each nation is reduced to nothing better than a flock of timid and industrious animals, of which the government is the shepherd.”
  10. “Americans combine the notions of Christian morality and of liberty so intimately in their minds that it is impossible to make them conceive the one without the other.”
  11. “In the United States, the most enlightened are the most religious; and the most religious are the most enlightened.”
  12. Americans of all ages, all conditions, and all dispositions constantly form associations… Wherever at the head of some new undertaking you see the government in France, or a man of rank in England, in the United States you will be sure to find an association.”

 

Watch & Night Operations

Watch & Night Operations

Impedance Grounding for Electric Grid Surviability

print(“Python”)

 

 

“Python is the programming equivalent

of a Swiss Army Knife.”

— Some guy

 

The Python Standard Library

Open source standards development is characterized by very open exchange, collaborative participation, rapid prototyping, transparency and meritocracy.   The Python programming language is a high-level, interpreted language that is widely used for general-purpose programming. Python is known for its readability, simplicity, and ease of use, making it a popular choice for beginners and experienced developers alike.  Python has a large and active community of developers, which has led to the creation of a vast ecosystem of libraries, frameworks, and tools that can be used for a wide range of applications. These include web development, scientific computing, data analysis, machine learning, and more.

Another important aspect of Python is its versatility. It can be used on a wide range of platforms, including Windows, macOS, Linux, and even mobile devices. Python is also compatible with many other programming languages and can be integrated with other tools and technologies, making it a powerful tool for software development.  Overall, the simplicity, readability, versatility, and large community support of Python make it a valuable programming language to learn for anyone interested in software development including building automation.

As open source software, anyone may suggest an improvement to Python(3.X) starting at the link below:

Python Enhancement Program

Python Download for Windows

Python can be used to control building automation systems. Building automation systems are typically used to control various systems within a building, such as heating, ventilation, air conditioning, lighting, security, and more. Python can be used to control these systems by interacting with the control systems through the building’s network or other interfaces.

There are several Python libraries available that can be used for building automation, including PyVISA, which is used to communicate with instrumentation and control systems, and PyModbus, which is used to communicate with Modbus devices commonly used in building automation systems. Python can also be used to develop custom applications and scripts to automate building systems, such as scheduling temperature setpoints, turning on and off lights, and adjusting ventilation systems based on occupancy or other variables. Overall, Python’s flexibility and versatility make it well-suited for use in building automation systems.

Subversion®

Building Automation & Control Networks

Abiit sed non oblitus | Wisconsin

A message from Stritch President Dr. Dan Scholz

“Saint Francis with the Animals” 17th Century / Lambert de Hondt

Standards Wisconsin

Rooibos Tea

Rooibos tea, also known as red bush tea, is a popular herbal tea that is native to South Africa. It is made from the leaves of the Aspalathus linearis plant, which is found only in the Western Cape region of South Africa.

The plant grows in a microclimate where it is exposed to a combination of hot, dry summers and cold, wet winters, which gives it its distinctive flavor and aroma.  It is used in cooking and baking, and can be found in a variety of products, including desserts, skincare products, and even beer.

EU protection for Rooibos tea is good news for South African agriculture

Tea

Working Dogs

Animals 300

Standards Wyoming

Abiit sed non oblitus | Iowa

Iowa Wesleyan University is a private university in Mount Pleasant, Iowa with a founding affiliation with the United Methodist Church.  It is Iowa’s first co-educational institution of higher learning and the oldest of its type west of the Mississippi River. It is one of several colleges and universities in the United States funded through the National Institute of Food and Agriculture program. These institutions receive funding for research, education, and outreach programs related to agriculture, food, and natural resources.

With an enrollment consistently below 1000 students the university will close at the end of the 2022–23 academic year owing to financial challenges.

 

Iowa Wesleyan University Announces Closure

More:

Iowa Wesleyan University to close after nearly 2 centuries

Long-struggling Iowa Wesleyan to close due to budget shortfall; USDA to take over campus

Owing $26 million to the USDA, Iowa Wesleyan University announces closure

 

 

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