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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /416/CH14/EX14.11 | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '416/CH14/EX14.11')
| -rwxr-xr-x | 416/CH14/EX14.11/ans14_11.txt | 4 | ||||
| -rwxr-xr-x | 416/CH14/EX14.11/example14_11.sce | 21 |
2 files changed, 25 insertions, 0 deletions
diff --git a/416/CH14/EX14.11/ans14_11.txt b/416/CH14/EX14.11/ans14_11.txt new file mode 100755 index 000000000..2158e82b3 --- /dev/null +++ b/416/CH14/EX14.11/ans14_11.txt @@ -0,0 +1,4 @@ +
+ example 14_11
+change in frequency is -0.01307Hz
+change in power -0.003333 p.u.MW
\ No newline at end of file diff --git a/416/CH14/EX14.11/example14_11.sce b/416/CH14/EX14.11/example14_11.sce new file mode 100755 index 000000000..d4f502fa8 --- /dev/null +++ b/416/CH14/EX14.11/example14_11.sce @@ -0,0 +1,21 @@ +clc
+clear
+disp('example 14_11')
+pa=5000 //power of unit a
+pb=10000 //power of unit b
+r=2 //given speed regulation in p.uMW
+d=0.01 //d in p.u.MW/Hz
+dpa=0 //change in power in unit a
+dpb=-100 //change in power in unit b
+pbas=10000 //assume base as 10000
+ra=r*pbas/pa //speed regulation of the unit a
+da=d*pa/pbas //da of unit b
+rb=r*pbas/pb //speed regulation of unit b
+db=d*pb/pbas //db of unit b
+ba=da+(1/ra) //area frequency response of a
+bb=db+(1/rb) //area frequency response of b
+ma=dpa/pbas //change in power a in per unit in unit a
+mb=dpb/pbas //change in power a in per unit in unit b
+df=(ma+mb)/(ba+bb) //change in frequency
+dpab=(ba*mb-bb*ma)/(ba+bb) //change in power between ab
+printf("change in frequency is %.5fHz \nchange in power %.6f p.u.MW",df,dpab)
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