ATRAC

Incremental Results

The most significant load flow impacts resulting from any change to the network can be summarized by the following type of assessment listing. Each item represents an increment in value from the pre-change or base case state of the network. Positive numbers indicate an increased effect while negative numbers indicate a decreased effect, or an increased effect in the opposite direction. Company through-flow is equal to the sum of flows in the out-of-company direction less the sum of company sales (or equivalently, the sum of flows in the into-company direction less the sum of company purchases).

The following sample demonstrates how a 50 Mw sale can be tracked by ATRAC across the network, including quantification of line use and identification of parallel flow paths. Any threshold Mw increment can be selected for creating the assessment and separate thresholds can be specified for each category of results.


SAMPLE TEST CASE
ADD 50 MW SALE FROM NSP TO WEP
RUN OCTOBER 15, 2001

INCREMENTAL LINE FLOWS ABOVE     8.0 MW
____FROM___________TO___________COMPANY________+MW___%MAX__
 1683 SHERC33G  1662 SHERCO_3   23 NSP___      53.3    95.9
  693 PL_PRG1    692 PLS_PRAR    2 WEP___     -49.9    75.0
  692 PLS_PRAR  2478 ZION___B    2 WEP___     -30.6    35.2
 1662 SHERCO_3  1709 COON_CK3   23 NSP___      19.5    42.5
 1662 SHERCO_3  1655 MNTCELO3   23 NSP___      19.4    44.3
 2478 ZION___B  2477 ZION___R   63 CECO__     -18.1     0.0
 1655 MNTCELO3  1739 PARKERS3   23 NSP___      14.6    58.6
 1709 COON_CK3  1757 TERMINL3   23 NSP___      13.8    65.1
 1853 EAU_CL_3   444 ARP_5       1 WPL___      13.6    24.7
 1695 AS_KING3  1853 EAU_CL_3   23 NSP___      13.5    47.0
 1604 PR_ISLD3  1235 BYRON__3   23 NSP___      13.0    49.5
  444 ARP_5     1049 ROCKY_RN    1 WPL___      12.4    12.9
 1695 AS_KING3  1757 TERMINL3   23 NSP___     -12.3    12.5
 1235 BYRON__3  1601 ADAMS__3   23 NSP___      12.1    23.8
  648 N_APPLTN  1049 ROCKY_RN    2 WEP___     -12.0     7.3
 1601 ADAMS__3  2050 HAZLTON3   25 IPW___      10.8    10.3
 4751 ARNOLD_3  2050 HAZLTON3   73 IELP__      -9.7    24.5
 1739 PARKERS3  1702 BLUE_LK3   23 NSP___       9.5    26.0
 1662 SHERCO_3  1518 BUNKER_3   23 NSP___       9.4    40.8
 1739 PARKERS3  1770 EDEN_PR3   23 NSP___       9.1    37.4
 1770 EDEN_PR3  1702 BLUE_LK3   23 NSP___       8.9     7.4
  692 PLS_PRAR   496 ARCADIAN    2 WEP___      -8.9    12.7
 4851 TIFFIN_3  4751 ARNOLD_3   84 IIGE__      -8.9     8.8
 1518 BUNKER_3  1709 COON_CK3   23 NSP___       8.8    37.9
 1702 BLUE_LK3  1608 WILMART3   23 NSP___       8.7    20.2
 4850 HILLS__3  4836 SUB_92_3   84 IIGE__       8.2     5.4
 4850 HILLS__3  4851 TIFFIN_3   84 IIGE__      -8.2    18.7
 1709 COON_CK3  1727 KOLMNLK3   23 NSP___       8.1    19.5
 1604 PR_ISLD3  1742 REDROCK3   23 NSP___      -8.0    12.0
INCREMENTAL HVDC LINE FLOWS ABOVE     8.0 MW
____FROM___________TO___________COMPANY________+MW___%MAX__
   none
INCREMENTAL INTERCONNECTION FLOWS ABOVE     8.0 MW
FROM CO_________TO CO__________BUS____________+MW___BASE__
   63 CECO__      2 WEP___    2478 ZION___B    30.5  -409.8
   23 NSP___      1 WPL___    1853 EAU_CL_3    13.6   274.2
    3 WPS___      1 WPL___    1049 ROCKY_RN   -12.4  -109.7
    3 WPS___      2 WEP___    1049 ROCKY_RN    12.0   -31.9
   63 CECO__     84 IIGE__    2458 QUADCY     -11.8   112.5
   23 NSP___     25 IPW___    1601 ADAMS__3    10.8    50.0
   25 IPW___     73 IELP__    2050 HAZLTON3     9.6  -118.9
   73 IELP__     84 IIGE__    4751 ARNOLD_3     8.8   -81.8
INCREMENTAL HVDC INTERCONNECTION FLOWS ABOVE     8.0 MW
FROM CO_________TO CO__________BUS____________+MW___BASE__
   none
INCREMENTAL COMPANY-COMPANY FLOWS ABOVE     8.0 MW
_FROM CO_________TO CO__________+MW___BASE__
    2 WEP___     63 CECO__     -31.7   485.6
   23 NSP___     25 IPW___      20.8   288.3
   23 NSP___      1 WPL___      14.4   310.0
   63 CECO__     84 IIGE__     -11.8   112.5
   84 IIGE__     73 IELP__     -10.3   198.5
    2 WEP___      3 WPS___      -9.4   311.9
   73 IELP__     25 IPW___      -8.9   107.9
    1 WPL___      2 WEP___       8.9   863.1
   83 MO____     56 UE____       8.8   508.3
INCREMENTAL COMPANY THROUGH FLOW ABOVE     8.0 MW
__COMPANY________+MW__
   2 WEP___     -45.03
   1 WPL___      21.58
  63 CECO__     -21.09
  19 SMPA__      13.70
  83 MO____      11.47
  23 NSP___      10.77
  22 UPA___       9.73
  26 DPC___       9.46
INCREMENTAL REGION-REGION FLOWS ABOVE     8.0 MW
_FROM REGION_____TO REGION______+MW____BASE_
    7 WUMS        4 ILL_CE     -30.6   225.4
    8 MAPP_E      7 WUMS        19.3   378.3
    6 IOWA        8 MAPP_E     -15.8   425.6
    4 ILL_CE      6 IOWA       -11.8   112.5
    9 MAPP_W      8 MAPP_E     -10.6   528.9
    5 SPP         3 ILL_MO      10.1   752.8
    3 ILL_MO      1 ECAR         8.2   164.8
INCREMENTAL COMPANY LOSSES ABOVE     2.0 MW
__COMPANY________+MW__
  23 NSP___       3.30
INCREMENTAL GENERATION DISPATCH ABOVE     8.0 MW
__GENERATOR______COMPANY_________+MW______MAX__
 1683 SHERC33G   23 NSP___       53.3    843.6
  693 PL_PRG1     2 WEP___      -49.9    544.0
INCREMENTAL BUS VOLTAGES ABOVE  0.0500 pu
___BUS___________COMPANY_______+pu____New pu VOLT__
   none
INCREMENTAL HVDC BUS VOLTAGES ABOVE  0.0500 pu OF BASE CASE
___BUS___________COMPANY_______+pu of BASE CASE__New KV__
   none