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Enterprise Security Magazine | Monday, May 22, 2023
Almost all utilities use substations' outdoor and interior fire prevention systems to protect transformers, equipment, and buildings from fire.
FREMONT, CA: The reliability of the electricity distribution infrastructure is an important factor for assessing electrical utility companies. A utility business's financial health and image might suffer greatly from a single unplanned outage. Most consumers don't have the time or knowledge to fully understand the complexity of maintaining steady electricity. Building sufficient separation clearance distances between plant equipment and structures is a key strategy for many utilities in reducing the risk of fire-related collateral damage. Environmental preservation, lowering the risk of harm to operators and members of the public, and environmental preservation are additional objectives.
A designer must consider the low probability of an actual fire developing, the cost of the fire protection system, and the reliability of the fire protection equipment while choosing a fire protection system.
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Lowering risks: The utility's procedures and standards dictate the fire protection measures used in air-insulated high-voltage substations. The measures are based on the substation equipment, electrical and physical layout, and the availability of water and fire extinguishing systems. The procedures and standards also define the type and extent of fire protection system design, including zoning, firefighting systems, and fire detection and alarm systems. The main technique for many utilities to reduce the risk of fire-related collateral damage is to provide sufficient separation clearance distances between plant equipment and structures. These distances, determined through risk assessments and engineering methods, are based on how far heat, flames, smoke, and other fire hazards may spread from the area of the fire. Preventing further damage to the facility is crucial for preventing further damage. However, some broad concepts can be discussed. A fire protection system's objectives are to reduce fire damage, safeguard nearby equipment, and reduce the time customers are without service. These considerations must be made.
Reducing carbon footprint: The degree of security that must be offered is determined by how vital the installations are and any other nearby facilities. Most utilities use fire prevention systems in exterior and interior installations to protect power transformers and the nearby apparatus, equipment, and buildings at substations from fire. Another issue is air pollution, safeguarding the environment, and ensuring workforce safety. A water-spray protection system is nearly always advised for outdoor installations. Gas systems of some form are frequently seen in indoor substations. These systems should employ clean gaseous materials that are both gaseous and electrically nonconductive and that evaporate completely without leaving any residue.
As a result of their contribution to greenhouse gas emissions, halon systems are no longer in use. Recent articles have reported the advent of hypoxic fire protection systems, in which the oxygen level in a substation building is controlled to a lower level to not sustain fire. This ensures that the building will not catch on fire. Some installations utilize high-expansion foam and powder. When selecting a method of fire protection for a specific substation, factors such as the substation's criticality, the likelihood of a fire breaking out, the effectiveness of the extinguishing agent, the potential for damage to neighboring equipment, and the protection of personnel are considered.
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