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rwl / JPOWER

Java port of PYPOWER
http://rwl.github.com/PYPOWER
Apache License 2.0
5 stars 8 forks source link

Calculation Problems #3

Open vogt31337 opened 9 years ago

vogt31337 commented 9 years ago

Hi,

at the moment I'm comparing results from JPower to MatPower, and for reference I'm using the: 9-Bus-Grid It's delivered with MatPower and JPower.

Example differences

First of all these two grids differ in their matrixes, some values were different (I didn't kept track) and I changed them. Next step is now comparing the results (see below).

Problems so far:

  1. As you can see, the maximum Q Losses line, is the wrong one
  2. The Branch Data has a sign error in the Q Losses table (on every value!)
  3. The Bus Data is completly messed up.

This all may result from the sign error in the Branch Data table...

JPower

================================================================================
|     System Summary                                                           |
================================================================================

How many?                How much?              P (MW)            Q (MVAr)
---------------------    -------------------  -------------  -----------------
Buses              9     Total Gen Capacity     820,0        -900,0 to 900,0
Generators         3     On-line Capacity       820,0        -900,0 to 900,0
Committed Gens     3     Generation (actual)    320,0              34,9
Loads              3     Load                   315,0             115,0
  Fixed            3       Fixed                315,0             115,0
  Dispatchable     0       Dispatchable          -0,0 of -0,0      -0,0
Shunts             0     Shunt (inj)             -0,0               0,0
Branches           9     Losses (I^2 * Z)         4,95            -51,31
Transformers       0     Branch Charging (inj)     -              131,4
Inter-ties         9     Total Inter-tie Flow   565,0             170,0
Areas              1

                          Minimum                      Maximum
                 -------------------------  --------------------------------
Voltage Magnitude   0,958 p.u. @ bus 9          1,003 p.u. @ bus 6   
Voltage Angle      -4,35 deg   @ bus 9          9,67 deg   @ bus 2   
P Losses (I^2*R)             -                  2,46 MW    @ line 8-9
Q Losses (I^2*X)             -                 -0,81 MVAr  @ line 6-7

================================================================================
|     Bus Data                                                                 |
================================================================================
 Bus      Voltage          Generation             Load        
  #   Mag(pu) Ang(deg)   P (MW)   Q (MVAr)   P (MW)   Q (MVAr)
----- ------- --------  --------  --------  --------  --------
    1  1,000    0,000       -         -     -215,86*   -72,21*
    2  1,000    9,669       -         -     -215,86*   -72,21*
    3  1,000    4,771       -         -     -215,86*   -72,21*
    4  0,987   -2,407       -         -     -215,86*   -72,21*
    5  0,975   -4,017       -         -     -125,86*   -42,21*
    6  1,003    1,926       -         -     -215,86*   -72,21*
    7  0,986    0,622       -         -     -115,86*   -37,21*
    8  0,996    3,799       -         -     -215,86*   -72,21*
    9  0,958   -4,350       -         -      -90,86*   -22,21*
                        --------  --------  --------  --------
               Total:    319,95     34,88    315,00    115,00

================================================================================
|     Branch Data                                                              |
================================================================================
Brnch   From   To    From Bus Injection   To Bus Injection     Loss (I^2 * Z)  
  #     Bus    Bus    P (MW)   Q (MVAr)   P (MW)   Q (MVAr)   P (MW)   Q (MVAr)
-----  -----  -----  --------  --------  --------  --------  --------  --------
   0      1      4     71,95     24,07    -71,95    -20,75     0,000     -3,32
   1      4      5     30,73     -0,59    -30,55    -13,69     0,174     -0,94
   2      5      6    -59,45    -16,31     60,89    -12,43     1,449     -6,31
   3      3      6     85,00     -3,65    -85,00      7,89     0,000     -4,24
   4      6      7     24,11      4,54    -24,01    -24,40     0,095     -0,81
   5      7      8    -75,99    -10,60     76,50      0,26     0,506     -4,29
   6      8      2   -163,00      2,28    163,00     14,46     0,000    -16,74
   7      8      9     86,50     -2,53    -84,04    -14,28     2,465    -12,40
   8      9      4    -40,96    -35,72     41,23     21,34     0,266     -2,26
                                                             --------  --------
                                                    Total:     4,955    -51,31

MatPower

================================================================================
|     System Summary                                                           |
================================================================================

How many?                How much?              P (MW)            Q (MVAr)
---------------------    -------------------  -------------  -----------------
Buses              9     Total Gen Capacity     820.0        -900.0 to 900.0
Generators         3     On-line Capacity       820.0        -900.0 to 900.0
Committed Gens     3     Generation (actual)    320.0              34.9
Loads              3     Load                   315.0             115.0
  Fixed            3       Fixed                315.0             115.0
  Dispatchable     0       Dispatchable          -0.0 of -0.0      -0.0
Shunts             0     Shunt (inj)             -0.0               0.0
Branches           9     Losses (I^2 * Z)         4.95             51.31
Transformers       0     Branch Charging (inj)     -              131.4
Inter-ties         0     Total Inter-tie Flow     0.0               0.0
Areas              1

                          Minimum                      Maximum
                 -------------------------  --------------------------------
Voltage Magnitude   0.958 p.u. @ bus 9          1.003 p.u. @ bus 6   
Voltage Angle      -4.35 deg   @ bus 9          9.67 deg   @ bus 2   
P Losses (I^2*R)             -                  2.46 MW    @ line 8-9
Q Losses (I^2*X)             -                 16.74 MVAr  @ line 8-2

================================================================================
|     Bus Data                                                                 |
================================================================================
 Bus      Voltage          Generation             Load        
  #   Mag(pu) Ang(deg)   P (MW)   Q (MVAr)   P (MW)   Q (MVAr)
----- ------- --------  --------  --------  --------  --------
    1  1.000    0.000*    71.95     24.07       -         -   
    2  1.000    9.669    163.00     14.46       -         -   
    3  1.000    4.771     85.00     -3.65       -         -   
    4  0.987   -2.407       -         -         -         -   
    5  0.975   -4.017       -         -       90.00     30.00 
    6  1.003    1.926       -         -         -         -   
    7  0.986    0.622       -         -      100.00     35.00 
    8  0.996    3.799       -         -         -         -   
    9  0.958   -4.350       -         -      125.00     50.00 
                        --------  --------  --------  --------
               Total:    319.95     34.88    315.00    115.00

================================================================================
|     Branch Data                                                              |
================================================================================
Brnch   From   To    From Bus Injection   To Bus Injection     Loss (I^2 * Z)  
  #     Bus    Bus    P (MW)   Q (MVAr)   P (MW)   Q (MVAr)   P (MW)   Q (MVAr)
-----  -----  -----  --------  --------  --------  --------  --------  --------
   1      1      4     71.95     24.07    -71.95    -20.75     0.000      3.32
   2      4      5     30.73     -0.59    -30.55    -13.69     0.174      0.94
   3      5      6    -59.45    -16.31     60.89    -12.43     1.449      6.31
   4      3      6     85.00     -3.65    -85.00      7.89     0.000      4.24
   5      6      7     24.11      4.54    -24.01    -24.40     0.095      0.81
   6      7      8    -75.99    -10.60     76.50      0.26     0.506      4.29
   7      8      2   -163.00      2.28    163.00     14.46     0.000     16.74
   8      8      9     86.50     -2.53    -84.04    -14.28     2.465     12.40
   9      9      4    -40.96    -35.72     41.23     21.34     0.266      2.26
                                                             --------  --------
                                                    Total:     4.955     51.31
zeac1997 commented 3 years ago

How can you run this project successfully? There are not parallel colt version of 0.9.5 presented in the web. hope to receive your answer, its important for my research. thank you!!!