Results—Equipment Mechanical Stress Table 411 Annual number of capacitor switching operations in each scenario. Low Penetration High Penetration Baseline PV SIS SIS PV SIS SIS Only (Utility (Customer Only (Utility (Customer dispatch) dispatch) dispatch) dispatch) Annual Switching Operations 112 112 112 112 112 112 112 for Capacitor #1 Annual Switching Operations 2 0 0 0 0 0 0 for Capacitor #2 Annual Switching Operations 2 22 22 22 22 22 22 for Capacitor #3 The only mechanically-switched equipment on the Waterman-Grantline circuit are three line capacitors on feeders 1 and 2. As the results in Table 411 show, in the baseline scenario, two of the capacitors are switched only twice, while the other averages one switching operation every three days. This is affected by the addition of PV in the penetration” scenario. Capacitor 2 is no longer used (its switching “low operations are reduced from 2 to 0) and capacitor 3 is switched slightly more often (operations increase from 2 to 22), while capacitor 1 is unaffected. None of the other scenarios (adding SIS and increasing the level of penetration) result in any additional changes in switching operations. Overall, the impact of the addition of PV and SIS on capacitor switching for this circuit is minimal. While they may slightly increase the number of operations, the increase is insignificant and would be very unlikely to impact costs given the long lifetime (on the order of decades) of capacitors and the natural degradation that occurs regardless of switching. The lack of additional switched equipment on this circuit is unfortunate from the perspective of gaining broader insight into the potential impact of PV and SIS units. While capacitor switching does result in wear and tear, the cost of replacing capacitor switches is relatively low, as the switch can be easily
Results—Equipment Mechanical Stress Table 411 Annual number of capacitor switching operations in each scenario. Low Penetration High Penetration Baseline PV Only SIS (Utility dispatch) SIS (Customer dispatch) PV Only SIS (Utility dispatch) SIS (Customer dispatch) Annual Switching Operations for Capacitor #1 112 112 112 112 112 112 112 Annual Switching Operations for Capacitor #2 2 0 0 0 0 0 0 Annual Switching Operations for Capacitor #3 2 22 22 22 22 22 22 The only mechanically-switched equipment on the Waterman-Grantline circuit are three line capacitors on feeders 1 and 2. As the results in Table 411 show, in the baseline scenario, two of the capacitors are switched only twice, while the other averages one switching operation every three days. This is affected by the addition of PV in the “low penetration” scenario. Capacitor 2 is no longer used (its switching operations are reduced from 2 to 0) and capacitor 3 is switched slightly more often (operations increase from 2 to 22), while capacitor 1 is unaffected. None of the other scenarios (adding SIS and increasing the level of penetration) result in any additional changes in switching operations. Overall, the impact of the addition of PV and SIS on capacitor switching for this circuit is minimal. While they may slightly increase the number of operations, the increase is insignificant and would be very unlikely to impact costs given the long lifetime (on the order of decades) of capacitors and the natural degradation that occurs regardless of switching. The lack of additional switched equipment on this circuit is unfortunate from the perspective of gaining broader insight into the potential impact of PV and SIS units. While capacitor switching does result in wear and tear, the cost of replacing capacitor switches is relatively low, as the switch can be easily