Storm

Home>Topics>Storm
Refine Results
  1. All
  2. Articles
  3. Online Articles
  4. Magazine Articles
  5. Videos
  1. FERC approves reliability standard on geomagnetic disturbances

    FERC approved Reliability Standard TPL-007-1, establishing requirements for certain registered entities to assess the vulnerability of their transmission systems to geomagnetic disturbance events, which occur when the sun ejects charged particles that interact with and cause changes in the earth’s magnetic fields. Applicable entities that do not meet certain performance requirements, based on the results of their vulnerability assessments, must develop a plan to achieve the performance requirements, FERC added in its order. FERC also directed NERC , which submitted the reliability standard for FERC approval, to develop modifications to the standard to: ·      Modify the benchmark geomagnetic disturbance event definition set forth in “Attachment 1” of the reliability standard as it pertains to the required geomagnetic disturbance vulnerability assessments and transformer thermal impact assessments, so that the definition is not based solely on spatially averaged data ·      Require the collection of necessary geomagnetically induced current monitoring and magnetometer data and to make such data publicly available ·      Include a one-year deadline for the development of corrective action plans and two- and four-year deadlines to complete mitigation actions involving non-hardware and hardware mitigation, respectively FERC also directed NERC to submit a work plan and, subsequently, one or more informational filings that address specific geomagnetic disturbance-related research areas. FERC noted that the reliability standard addresses the directives in Order No. 779 by requiring applicable bulk-power system owners and operators to conduct initial and ongoing vulnerability assessments regarding the potential impact of a benchmark geomagnetic disturbance event on the bulk-power system as a whole and on bulk-power system components. Potential mitigation strategies identified in the reliability standard include the installation, modification or removal of transmission and generation facilities and associated equipment, FERC said. Order 779 directed NERC to implement the directive in two stages, FERC said, adding that in the first stage, it directed NERC to submit, within six months of the effective date of Order 779, one or more reliability standards (first stage geomagnetic disturbance reliability standards) that require owners and operators of the bulk-power system to develop and implement operational procedures to mitigate the effects of geomagnetic disturbances consistent with the reliable operation of the bulk-power system. In the second stage, FERC said that it directed NERC to submit, within 18 months of the effective date of Order 779, one or more reliability standards (second stage geomagnetic disturbance reliability standards) that require owners and operators of the bulk-power system to conduct initial and ongoing assessments of the potential impact of benchmark geomagnetic disturbance events on bulk-power system equipment and the bulk-power system as a whole. FERC directed that the Second Stage geomagnetic disturbance Reliability Standards must identify benchmark geomagnetic disturbance events that specify what severity of geomagnetic disturbance events a responsible entity must assess for potential impacts on the bulk-power system. FERC added that Order 779 explained that if the assessments identified potential impacts from benchmark geomagnetic disturbance events, the reliability standards should require owners and operators to develop and implement a plan to protect against instability, uncontrolled separation, or cascading failures of the bulk-power system, caused by damage to critical or vulnerable bulk-power system equipment, or otherwise, as a result of a benchmark geomagnetic disturbance event. FERC also noted that it directed that the development of that plan could not be limited to considering operational procedures or enhanced training alone but should, subject to the potential impacts of the benchmark geomagnetic disturbance events identified in the assessments, contain strategies for protecting against the potential impact of geomagnetic disturbances based on factors such as the age, condition, technical specifications, system configuration or location of specific equipment. FERC said that Order 779 observed that those strategies could, for instance, include automatically blocking geomagnetically induced current (GIC) from entering the bulk-power system, instituting specification requirements for new equipment, inventory management, isolating certain equipment that is not cost-effective to retrofit or a combination thereof. FERC noted that NERC maintains that the reliability standard is just, reasonable, not unduly discriminatory or preferential and in the public interest. According to NERC, the reliability standard applies to planning coordinators, transmission planners, transmission owners and generation owners who own or whose planning coordinator area or transmission planning area includes a power transformer with a high side, wye-grounded winding connected at 200 kV or higher. In a Sept. 22 statement, NERC said that reliability is a priority for NERC and industry, and that it will continue the work with FERC and stakeholders toward assuring the reliability of the North American bulk power system. Among other things, FERC said in its order that the reliability standard contains seven requirements: ·      Requirement R1 requires planning coordinators and transmission planners to determine the individual and joint responsibilities in the planning coordinator’s planning area for maintaining models and performing studies needed to complete the required geomagnetic disturbance vulnerability assessment ·      Requirement R2 requires planning coordinators and transmission planners to maintain system models and GIC system models needed to complete the required geomagnetic disturbance vulnerability assessment ·      Requirement R3 requires planning coordinators and transmission planners to have criteria for acceptable system steady state voltage limits for their systems during a certain benchmark geomagnetic disturbance event ·      Requirement R4 requires planning coordinators and transmission planners to conduct the geomagnetic disturbance vulnerability assessment every 60 months using a certain benchmark geomagnetic disturbance event. The benchmark geomagnetic disturbance event is based on a 1-in-100 year frequency of occurrence and is composed of four elements: a reference peak geoelectric field amplitude of 8 V/km derived from statistical analysis of historical magnetometer data; a scaling factor to account for local geomagnetic latitude; a scaling factor to account for local earth conductivity; and a reference geomagnetic field time series or wave shape to facilitate time-domain analysis of geomagnetic disturbance impact on equipment. The product of the first three elements is referred to as the regional geoelectric field peak amplitude ·      Requirement R5 requires planning coordinators and transmission planners to provide GIC flow information, to be used in a required transformer thermal impact assessment, to each transmission owner and generator owner that owns an applicable transformer within the applicable planning area ·      Requirement R6 requires transmission owners and generator owners to conduct thermal impact assessments on solely and jointly owned applicable transformers where the maximum effective GIC value provided in Requirement R5 is 75 amperes per phase (A/phase) or greater ·      Requirement R7 requires planning coordinators and transmission planners to develop corrective action plans if the geomagnetic disturbance vulnerability assessment concludes that the system does not meet certain performance requirements During the commission’s Sept. 22 meeting, FERC Chairman Norman Bay said, “We know that geomagnetic disturbance poses a risk to the grid, but we also know that the science of geomagnetic disturbance continues to evolve as scientists deepen their understanding of how geomagnetic disturbance would impact the grid and how its effects can be mitigated. … As the science develops, the commission should reexamine the standard to ensure that we are striking the right balance.” Commissioner Cheryl LaFleur said that geomagnetic disturbance “is exactly the kind of high-impact, low-frequency, broad-based threat to the grid that only the government, in a regulatory role, with NERC participating, can really handle.” She said, “[T]he challenge we had was balancing the need for action on something that could pose a very big threat, but with a recognition that the science was very much still evolving, as well as the engineering understanding of how solar storms actually impact the grid, and I hope we struck a very good balance in the final rule.” Commissioner Tony Clark said that these naturally occurring magnetic field disturbances are sort of like earthquakes in that on any given day, it is probably a low probability that a major earthquake will occur, but there is a high probability that somewhere over the course of time, there will be one of these type of events. While they are truly infrequent, they have the potential for being a major impact, and so FERC takes it seriously, he said. Commissioner Colette Honorable said that the final rule is an important step in addressing the risks posed by geomagnetic disturbance events to the bulk power system. She said that the rule also recognizes that the potential impacts of geomagnetic disturbances on reliability are evolving and will evolve over time and that continued geomagnetic disturbance research is necessary.

    Online Articles

    Online Articles

    Mon, 26 Sep 2016

  2. Power plant fire knocks out electricity for most of Puerto Rico

    The vast majority of Puerto Ricans don't have generators and they were forced to spend the night in darkness and without air conditioning in the tropical heat

    Online Articles

    Online Articles

    Thu, 22 Sep 2016

  3. Electricity Generation: Power slowly coming back after blackout darkens Puerto Rico

    Power was slowly being restored in Puerto Rico on Thursday, nearly 24 hours after a blackout swept across the island when a fire at a power plant set off a cascade of problems that knocked out the aging utility grid.

    Online Articles

    Online Articles

    Thu, 22 Sep 2016

  4. Protective clothing: Rainwear PVC on nylon 48-inch rain coat is lightweight, flexible

    Safety clothing: Galeton has expanded its line of Repel Rainwear to include the #12363 Repel Rainwear PVC on nylon 48-inch raincoat in choice of black or green and sizes up to 3XL.

    Online Articles

    Online Articles

    Thu, 22 Sep 2016

  1. Puerto Rico slowly emerges from power outage

    Online Articles

    Online Articles

    Fri, 23 Sep 2016

  2. Electricity Generation: Cheers erupt as Puerto Rico slowly emerges from blackout

    Cheers erupted as lights slowly began to flicker back on across Puerto Rico overnight as the U.S. territory struggled to emerge from an island-wide blackout following a fire at a power plant that caused the aging utility grid to fail.

    Online Articles

    Online Articles

    Fri, 23 Sep 2016

  3. Ameren Illinois Stepping Up Grid Improvements

    The Illinois Commerce Commission on Friday approved  Ameren Illinois’  plans to accelerate upgrades to its electric grid, an effort that has already resulted in more than 235,300 fewer outages and saved customers an estimated $46 million each year.  

    Online Articles

    Online Articles

    Fri, 23 Sep 2016

  4. Gulf work resumes as storm turns east

    Operators began returning workers to evacuated installations in the Gulf of Mexico Aug. 31 as Tropical Depression No. 9 built into Tropical Storm Hermine and turned away from oil and gas producing areas toward the northwestern Florida Coast.

    Online Articles

    Online Articles

    Thu, 1 Sep 2016

  5. Oil & Gas News: Shell starts production at Stones in the Gulf of Mexico

    Stones is expected to produce around 50,000 boe/d when fully ramped up at the end of 2017. The host facility for the world’s deepest offshore oil and gas project is a FPSO vessel.

    Online Articles

    Online Articles

    Tue, 6 Sep 2016

  6. Wave Power Energy: First wave-produced electricity in US goes online in Hawaii

    In the waters off the coast of Hawaii, a tall buoy bobs and sways in the water, using the rise and fall of the waves to generate electricity.

    Online Articles

    Online Articles

    Mon, 19 Sep 2016

  7. Ocean Wave Energy: Developers face challenges capturing wave energy

    Although wave-generated power could meet a quarter of America's energy needs, the technology lags other renewables such as wind and solar. But the U.S. Navy has established a test site in Hawaii, where power from floating devices travels a mile through undersea cables to Oahu's power grid — the ...

    Online Articles

    Online Articles

    Tue, 20 Sep 2016

  8. NYPA working with Ohio State on studying hurricane impact to transmission

    The New Yorkers are working with the Buckeyes to figure out how to beat the hurricanes

    Online Articles

    Online Articles

    Wed, 21 Sep 2016

Get More Results