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DTSTAMP:20231230T013300Z
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DTSTART;TZID=America/New_York:20230321T180000
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DESCRIPTION:While utilities are leveraging new technology and materials for
  grid hardening and better data analytics\, they often still approach syst
 em grounding with a legacy philosophy. This talk will look at Distribution
 \, Transmission and Station grounding practices and why they need to evolv
 e. In the distribution world increased burial of infrastructure & safety i
 ncidents are pushing OH pole grounding into the pole hole. This combined w
 ith new backfill materials can effectively negate electrode performance. T
 he relationship between arrester performance\, pole down ground routing an
 d effective grounding will be explained to illustrate what is required for
  successful lightning mitigation and reduced equipment failure. On the OH 
 Transmission side of the business\, it is commonplace to leave grounding t
 o the last stage of the project\, where construction forces are required t
 o install an unknown number of grounds rods /counterpoise /per structure u
 ntil utility target is met. With the rapid expansion of wind & solar conne
 ctions to the grid\, increases in available fault current at our ageing st
 ations is commonplace. We will look at common soil Resistivity testing iss
 ues and grid design solutions. We will also look at what happens to touch 
 & step potential at stations assigned a “hi-split” factor\, when the c
 onnected Tx structures do not meet grounding targets or copper theft occur
 s. The common practice of installing communication towers inside the fence
  will be reviewed a common cause as well for lightning related damage. A l
 ist of factors will be examined that will help Stations Asset managers dec
 ide where to prioritize their maintenance dollars.\n\nSpeaker(s): Kris Cox
 \, \n\nRoom: 426\, Bldg: Beatty\, Wentworth Institute of Technology\, 550 
 Huntington Ave\, Boston\, Massachusetts\, United States\, 02115
LOCATION:Room: 426\, Bldg: Beatty\, Wentworth Institute of Technology\, 550
  Huntington Ave\, Boston\, Massachusetts\, United States\, 02115
ORGANIZER:risa.karanxha@nationalgrid.com
SEQUENCE:5
SUMMARY:Effective Grounding Solutions for System Reliability and Worker/ Pu
 blic Safety
URL;VALUE=URI:https://events.vtools.ieee.org/m/396108
X-ALT-DESC:Description: <br /><p>While utilities are leveraging new technol
 ogy and materials for grid hardening and better data analytics\, they ofte
 n still approach system grounding with a legacy philosophy. This talk will
  look at Distribution\, Transmission and Station grounding practices and w
 hy they need to evolve. In the distribution world increased burial of infr
 astructure &amp\; safety incidents are pushing OH pole grounding into the 
 pole hole. This combined with new backfill materials can effectively negat
 e electrode performance. The relationship between arrester performance\, p
 ole down ground routing and effective grounding will be explained to illus
 trate what is required for successful lightning mitigation and reduced equ
 ipment failure. On the OH Transmission side of the business\, it is common
 place to leave grounding to the last stage of the project\, where construc
 tion forces are required to install an unknown number of grounds rods /cou
 nterpoise /per structure until utility target is met. With the rapid expan
 sion of wind &amp\; solar connections to the grid\, increases in available
  fault current at our ageing stations is commonplace. We will look at comm
 on soil Resistivity testing issues and grid design solutions. We will also
  look at what happens to touch &amp\; step potential at stations assigned 
 a &ldquo\;hi-split&rdquo\; factor\, when the connected Tx structures do no
 t meet grounding targets or copper theft occurs. The common practice of in
 stalling communication towers inside the fence will be reviewed a common c
 ause as well for lightning related damage. A list of factors will be exami
 ned that will help Stations Asset managers decide where to prioritize thei
 r maintenance dollars.</p>
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