buicescu lucian ms912321-proiect igd
TRANSCRIPT
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
1/25
UniversitateaPolitehnica dinBucuresti
FacultateadeEnergetica
Proiect-Impactul generarii distribuite asupra retelelo relectrice
Student:
Buicescu Lucian
MS9
2014
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
2/25
2
Proiect-Impactulgenerariidistribuiteasupraretelelorelectrice
Se considera reteaua electrica de distributie din figura1, care alimenteaza o zona de consum.
Figura.1Schema retelei electrice de distributie
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
3/25
Parametrii transformatoarelor din ST sunt prezentati in tabelul1,iar parametrii liniilor in
tabelul2.In tabelul3 sunt prezentate puterile maxime cerute de consumatori.
Tabelul1Parametrii transformatoarelor
Sn UnIT/Un
MT Psc P0 usc i0
[MVA] [kV/kV] [kW] [kW] [%] [%]
16 (110 9x1,78%)/22 94 18 11 1,5
Tabelul2Parametrii liniilor electrice
Un sn r0 x0 b0 Iadm
[kV] [mm ] [/km] [/km] [S/km] [A]
110 240 0,122 0,386 2,892 475
20 95 0,321 0,334 3,291 315
Tabelul3Caracteristicile consumatorilor din retea
Consumator Tipcons. S[kVA] cos() Amplasare
CI1 Industrial 2100 0,78 C3
CI2 Industrial 1900 0,76 C4
CI3 Industrial 2500 0,75 C5
CI4 Industrial 2200 0,80 C6
CU1 Urban 550 0,90 C7
CU2 Urban 700 0,92 C8
CU3 Urban 300 0,899 C9
CU4 Urban 400
0,90 C1CU5 Urban 250 0,85 C1
CU6 Urban 650 0,87 C2
Nodul de alimentare (SEN)este caracterizat de urmatoarele marimi:
Nivelul tensiunii este egalcu 1.05 Un
Putereadescurtcircuit:2000MVA.
In regim normalde functionare,reteaua electrica de distributie de medie tensiunese exploateaza in
configuratie radiala,prin deconectarea tronsonuluidintre consumatorii C3siC4.
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
4/25
4
Pentru aceasta retea se urmareste imbunatatirea regimului de functionare,prin aplicarea urmatoarelor masuri:
a) Compensarea puterii reactive,in vederea obtinerii unui factor de putere neutral de 0,92.
Tabelul 4. Puterile si compensarea puterii
P cos phi cos phi n Qc(MW) S(kva) P(kw) Qc(kw) nci nr baterii Bcompens Qnecom QT necomp
CI1 1.64 0.78 0.92 0.41899187 2100 1640 418.9918656 0.87289972 1 480 1312 832
CI2 1.444 0.76 0.92 0.41755108 1900 1440 416.394432 0.8674884 1 480 1235 755
CI3 1.88 0.75 0.92 0.57483547 2500 1880 574.8354744 1.197573905 2 960 1648 688
CI4 1.76 0.8 0.92 0.38895807 2200 1760 388.9580685 0.810329309 1 480 1320 840
Qbc 480 kVAr
ID NAME U(Kv) u(%) Uang(grd) Pload(MW) Qload(MVar) Pgen(MW) Qgen(Mvar) Qshunt(Mvar)
65 IT 115.28 104.8 -0.1 0 0 0 0 0
78 MT 19.378 96.89 -0.1 0 0 0 0 0
82 MT1 19.847 99.24 -0.9 0 0 0 0 0
65 IT 114.605 104.19 -0.3 0 0 0 0 0
78 MT 16.918 84.59 -3.2 0 0 0 0 0
82 MT1 20.004 100.02 -3.8 0 0 0 0 0
52 N52 115.5 105 0 0 0 10.571 8.149 0
155 Nc1 16.868 84.34 -3.5 0.192 0.119 0 0 0
193 NC10 19.289 96.44 -3.9 0.331 0.16 0 0 0
177 Nc2 16.832 84.16 -3.7 0.521 0.294 0 0 0
181 NC3 16.837 84.19 -4 1.509 1.207 0 0 0
185 NC4 16.936 84.68 -4.1 1.328 1.136 0 0 0
189 NC5 17.089 85.44 -4.2 1.73 1.516 0 0 0
209 NC6 17.319 86.59 -4.2 1.619 1.214 0 0 0
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
5/25
5
b) Stabilirea configuratiei optime a retelei electrice de medie tensiune prin reconfigurare.
Pentru reconfigurarea retelei electrice de medie tensiune se deconecteaza pe rand cate o linie,din apropierea punctului C5, pentru a gasi
configuratia cu pierderi minime.
Tabelul 5 Pierderi de putere pentru reconfigurarea retelei electrice
Cupla deschisa
LC 1-2 Network MW losses = 0.811650
Network Mvar losses = 1.143640
LC 2-3 Network MW losses = 0.685539
Network Mvar losses = 0.909715
LC 3-4 Network MW losses = 0.436039
Network Mvar losses = 0.414611
LC 4-5 Network MW losses = 0.327954
Network Mvar losses = 0.150779
LC 5-6 Network MW losses = 0.322156
Network Mvar losses = 0.014519
LC 6-7 Network MW losses = 0.445934
Network Mvar losses = 0.061931
LC 7-8 Network MW losses = 0.504305
Network Mvar losses = 0.107789
LC 8-9 Network MW losses = 0.594134
Network Mvar losses = 0.187217
LC 9-10 Network MW losses = 0.638147Network Mvar losses = 0.228587
Se alege pentru a fi deconectata linia LC 5-6 intrucat are pierderile minime.
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
6/25
6
In continuare se vor prezenta toate rezultatele pentru linia LC 5-6 deconecata:
Iterationdata
Iterations: 4
Mismatch: 0
From To
P
Loss
Q
Loss
P
Imp
Q
Imp
P
Gen
Q
Gen
P
Load
Q
Load Gen. Cost
Qc
Shunt
Ql
Shunt
Q
Comp
Iron
Losses
Area/Zon
e
Area/Zon
e MW MVar MW MVar MW MVar MW MVar
Curr.
Units MVar MVar MVar MW
Network 0.322 0.0158.84
5 4.053 8.845 4.053 8.523 4.038 0 0 0 0 0.043
Area 1 0.322 0.015 0 0 8.845 4.053 8.523 4.038 0 0 0 0 0
Zone 1 0.322 0.015 0 0 8.845 4.053 8.523 4.038 0 0 0 0 0
UnP LossLine
Q LossLine
P LossTransformer
Q LossTransformer
kV MW MVar MW MVar
20 0.245 0.218 0 0
110 0.02 -0.8 0.057 0.596
Overloads
Nodes
(upper) %
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
7/25
7
MT 114.85
MT1 113.55
Nc1 113.41
NC10 112.59
Nc2 111.97
NC9 111.72
NC8 110.99
NC7 110.62
NC3 110.4
NC6 110.4
ID Node U uAngleU
PLoad
QLoad
PGen
QGen
QShunt
dPL/dPG
dPL/dQG
Description Zone Area Partial
Name kV % MW MVar MW MVar MVar
Network
52 N52 115.5 105 0 0 0 8.845 4.053 0 0 0Zone1
Area1 1
78 MT 22.97114.8
5 -0.1 0 0 0 0 0 0 0Zone1
Area1 1
65 IT114.95
4 104.5 -0.3 0 0 0 0 0 0 0Zone1
Area1 1
82 MT1 22.71113.5
5 -1.5 0 0 0 0 0 0 0Zone1
Area1 1
15
5 Nc1 22.682
113.4
1 -0.4 0.192 0.119 0 0 0 0 0
Zone
1
Area
1 1
189 NC5 21.91
109.55 -1.2 1.73 0.633 0 0 0 0 0
Zone1
Area1 1
185 NC4 21.962
109.81 -1.1 1.328 0.695 0 0 0 0 0
Zone1
Area1 1
181 NC3 22.079 110.4 -1 1.509 0.765 0 0 0 0 0
Zone1
Area1 1
177 Nc2 22.395
111.97 -0.7 0.521 0.294 0 0 0 0 0
Zone1
Area1 1
205 NC7 22.123
110.62 -2 0.455 0.221 0 0 0 0 0
Zone1
Area1 1
20 NC8 22.198 110.9 -2 0.592 0.252 0 0 0 0 0 Zone Area 1
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
8/25
8
1 9 1 1
197 NC9 22.344
111.72 -1.8 0.246 0.126 0 0 0 0 0
Zone1
Area1 1
193
NC10 22.517
112.59 -1.6 0.331 0.16 0 0 0 0 0
Zone1
Area1 1
209 NC6 22.079 110.4 -2.1 1.619 0.773 0 0 0 0 0
Zone1
Area1 1
ID Node Element Type P Q I Angle I Loading P Loss Q Loss P Fe P Comp Q Comp TapName Name MW MVar kA % MW MVar MW MW MVar
281 Nc2 LC3-2 Line 4.637 2.156 0.132 -25.6 41.85 0.0536 0.0505 0 0
281 NC3 LC3-2 Line -4.584 -2.105 0.132 154.4 41.87 0.0536 0.0505 0 0
273 NC3 LC4-3 Line 3.075 1.34 0.088 -24.5 27.84 0.0133 0.011 0 0
273 NC4 LC4-3 Line -3.061 -1.329 0.088 155.4 27.85 0.0133 0.011 0 0
297 MT LC 1-0 Line 5.46 2.675 0.153 -26.2 48.52 0.0562 0.0542 0 0
297 Nc1 LC 1-0 Line -5.404 -2.621 0.153 153.7 48.53 0.0562 0.0542 0 0
289 Nc1 LC 2-1 Line 5.212 2.502 0.147 -26 46.72 0.0542 0.0521 0 0
289 Nc2 LC 2-1 Line -5.158 -2.45 0.147 153.9 46.73 0.0542 0.0521 0 0
48 N52 SEN Feeder -8.845 -4.053 0.049 155.4
69 IT L1 Line -8.825 -4.852 0.051 150.9 10.65 0.0202 -0.7999 0 0
69 N52 L1 Line 8.845 4.053 0.049 -24.6 10.24 0.0202 -0.7999 0 0
337 NC10 C10 Load 0.331 0.16 0.009 -27.4
350 NC9 C9 Load 0.246 0.126 0.007 -29
363 NC8 C8 Load 0.592 0.252 0.017 -25
96 IT TR1 2W Transformer 5.492 2.924 0.031 -28.3 0 0.0324 0.2484 0.022 4
376 NC7 C7 Load 0.455 0.221 0.013 -27.9
115 MT1 TR2 2W Transformer -3.308 -1.581 0.093 153 0 0.0242 0.3479 0.021 4
96 MT TR1 2W Transformer -5.46 -2.675 0.153 153.8 0 0.0324 0.2484 0.022 4
115 IT TR2 2W Transformer 3.333 1.929 0.019 -30.3 0 0.0242 0.3479 0.021 4
389 NC6 C6 Load 1.619 0.773 0.047 -27.6
137 MT Coupler Coupler 0 0 0 0 0 0 0
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
9/25
9
137 MT1 Coupler Coupler 0 0 0 0 0 0 0
420 NC5 C5 Load 1.73 0.633 0.049 -21.3
433 NC4 C4 Load 1.328 0.695 0.039 -28.7
446 NC3 C3 Load 1.509 0.765 0.044 -27.9
459 Nc2 C2 Load 0.521 0.294 0.015 -30.1
472 Nc1 C1 Load 0.192 0.119 0.006 -32.2
220 NC9 LC10-9 Line -2.936 -1.387 0.084 152.9 26.63 0.0186 0.0148 0 0
220 NC10 LC10-9 Line 2.954 1.401 0.084 -27 26.62 0.0186 0.0148 0 0
212 NC10 LC10 Line -3.285 -1.562 0.093 152.9 29.61 0.023 0.0193 0 0
212 MT1 LC10 Line 3.308 1.581 0.093 -27 29.59 0.023 0.0193 0 0
233 NC8 LC9-8 Line -2.675 -1.25 0.077 153 24.38 0.0145 0.0109 0 0
233 NC9 LC9-8 Line 2.69 1.261 0.077 -26.9 24.37 0.0145 0.0109 0 0
249 NC6 LC7-6 Line -1.619 -0.773 0.047 152.4 14.89 0.0026 0.0007 0 0
249 NC7 LC7-6 Line 1.622 0.774 0.047 -27.5 14.89 0.0026 0.0007 0 0
241 NC7 LC8-7 Line -2.077 -0.994 0.06 152.4 19.08 0.0057 0.0033 0 0
241 NC8 LC8-7 Line 2.083 0.998 0.06 -27.5 19.07 0.0057 0.0033 0 0
265 NC4 LC5-4 Line 1.733 0.634 0.049 -21.2 15.4 0.0034 0.0012 0 0
265 NC5 LC5-4 Line -1.73 -0.633 0.049 158.7 15.41 0.0034 0.0012 0 0
257 NC5 LC 6-5 Line 0 0 0 0 0 0 0 0 0
257 NC6 LC 6-5 Line 0 0 0 0 0 0 0 0 0
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
10/25
c) Stabilirea numarului optim de transformatoare in paralel.
Tabelul 6 Numarul optim de transformatoare paralel si claculul prizei
Sn 16 MVA
DP0 18 kW
DPsc 94 kW
P Load Q Load
MW MVar
3.244 1.532
Incarcare pe sectia 1 a barelor de MT Incarcare pe sectia 2 a barelor de MT
Calculul prizei
Psc= 94 [kW]
r0 IT= 0.122 /km
U1= 115.5 kV
Rt= 0.17771875
Zt= 3.3275
= 0
cr= 0.343559001
= 0.589448143
cr= 0.334285961
P Load Q Load
MW MVar
5.279 2.506
|S|= 9.43117 MVA
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
11/25
Xt= 3.332242519
Rst= 0.088859375
Xst= 1.666121259
RL= 2.745
XL= 8.685
R= 2.833859375
X= 10.35112126
P2= 8.523 MW
Q2= 4.038 MVAr
UnMT= 22 kV
x0 IT= 0.386 /km
U2 dorit= 21.5 kV
SnT= 16 MVA
L it= 22.5 km
U
trafo= 1.78
% pt un
plot
u sc= 11 %
Un IT= 110 kV
Conform calculelor efectuate,plotul de transformare al transformatoarelor va fi :
np= 3.880922996 ==> nr ploturi= 4
In urma calculelor realizate se stabileste ca numarul optim de transformatoare paralel este de 2 transformatore, cupla deschisa, intrucat
aceasta varianta prezinta cele mai mici pierderi totale.
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
12/25
6
In reteaua electrica de medie tensiune va fi amplasata o sursa de generare distribuita,situata la distanta de 0,75km de
consumatorul C5conform figurii de mai sus
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
13/25
Exista 2 solutii de conectare a sursei distribuite:
1) Se considera sursa distribuita conectata la retea prin intermediul nodului C5.
In urma simularii imaginii de mai sus pentru mai multe puteri ale sursei distribuite s-au
obtinut rezultatele:
Cos fi=0.85
pierderi pentru
conectarea la c5
P=1
Network MW Losses =
0.323950
P=2minimNetwork MW Losses =0.300219
P=3
Network MW Losses =
0.313147
Se observa ca puterea sursei distribuite pentru care s-au obtinut pierderi minime este PGD=
2MW.
2)
Se considera sursa distribuita conectata la retea printr-o linie electrica direct la bara deMT a statiei.
In urma simularii imaginii de mai sus pentru mai multe puteri ale sursei distribuite s-au
obtinut rezultatele:
P=1 minim Network MW Losses =
0.295
0.3
0.305
0.31
0.315
0.32
0.325
0.33
0 0.5 1 1.5 2 2.5 3 3.5
Series1
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
14/25
0.382316
P=2Network MW Losses =0.409300
P=3
Network MW Losses =
0.472387
Se observa ca puterea sursei distribuite pentru care s-au obtinut pierderi minime este PGD=1
MW.
Stabilirea puterii maxime ce poate fi generate de sursa distribuita
In urma simularii in Neplan a celor doua variante de conectare a sursei distribuite s-au
obtinut rezultatele:
Puterea maxima pentru conectarea directa la bara de MT=8
Puterea maxima pentru conectarea directa la C5=8
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
0 0.5 1 1.5 2 2.5 3 3.5
Series1
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
15/25
Analiza circulatiei de puteri pentru diferite regimuri de functionare ale sursei distribuite
a)Variatia nivelului de tensiune in retea considerand sursa distribuita conectata direct in punctual C5 si
generand o putere maxima Pgd=8MW.conectare la C5 cos phi=1
ID Node U uAngleU P Load Q Load P Gen
Name kV % MW MVar MW
553 NGD 20.254 101.27 -1.7 0 0 2
52 N52 115.5 105 0 0 0 6.757
78 MT 21.01 105.05 -1.6 0 0 0
65 IT 115.002 104.55 -0.2 0 0 0
82 MT1 21.17 105.85 -1.6 0 0 0
155 Nc1 20.778 103.89 -1.7 0.192 0.119 0
189 NC5 20.23 101.15 -1.8 1.73 0.633 0
185 NC4 20.239 101.2 -1.8 1.328 0.695 0
181 NC3 20.309 101.54 -1.8 1.509 0.765 0
177 Nc2 20.549 102.75 -1.8 0.521 0.294 0
205 NC7 20.538 102.69 -2.2 0.455 0.221 0
201 NC8 20.618 103.09 -2.1 0.592 0.252 0
197 NC9 20.776 103.88 -2 0.246 0.126 0
193 NC10 20.963 104.81 -1.8 0.331 0.16 0
209 NC6 20.491 102.45 -2.3 1.619 0.773 0
conectare la c5 capacitiv cos fi=0.95
ID Node U uAngleU P Load Q Load P Gen Q Gen
Name kV % MW MVar MW MVar
553 NGD 20.513 102.57 -2 0 0 2 0.657
52 N52 115.5 105 0 0 0 6.736 3.348
78 MT 21.129 105.65 -1.6 0 0 0 0
65 IT 115.056 104.6 -0.2 0 0 0 0
82 MT1 20.824 104.12 -1.6 0 0 0 0155 Nc1 20.926 104.63 -1.7 0.192 0.119 0 0
189 NC5 20.482 102.41 -2.1 1.73 0.633 0 0
185 NC4 20.475 102.37 -2.1 1.328 0.695 0 0
181 NC3 20.524 102.62 -2.1 1.509 0.765 0 0
177 Nc2 20.728 103.64 -1.9 0.521 0.294 0 0
205 NC7 20.18 100.9 -2.3 0.455 0.221 0 0
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
16/25
201 NC8 20.262 101.31 -2.2 0.592 0.252 0 0
197 NC9 20.423 102.11 -2 0.246 0.126 0 0
193 NC10 20.613 103.06 -1.8 0.331 0.16 0 0
209 NC6 20.132 100.66 -2.3 1.619 0.773 0 0
conectare la c5 inductiv=0.95
ID Node U u
Angle
U P Load Q Load P Gen Q Gen
Name kV % MW MVar MW MVar
553 NGD 19.986 99.93 -1.3 0 0.657 2 0
52 N52 115.5 105 0 0 0 6.79 4.785
78 MT 20.887 104.44 -1.6 0 0 0 0
65 IT 114.947 104.5 -0.2 0 0 0 0
82 MT1 21.16 105.8 -1.5 0 0 0 0
155 Nc1 20.625 103.12 -1.6 0.192 0.119 0 0
189 NC5 19.97 99.85 -1.4 1.73 0.633 0 0
185 NC4 19.996 99.98 -1.5 1.328 0.695 0 0
181 NC3 20.086 100.43 -1.6 1.509 0.765 0 0
177 Nc2 20.365 101.82 -1.6 0.521 0.294 0 0
205 NC7 20.527 102.64 -2.2 0.455 0.221 0 0
201 NC8 20.607 103.04 -2.1 0.592 0.252 0 0
197 NC9 20.765 103.83 -2 0.246 0.126 0 0
193 NC10 20.952 104.76 -1.8 0.331 0.16 0 0
209 NC6 20.48 102.4 -2.3 1.619 0.773 0 0
conectare la c5 inductiv cos fi=0.9
ID Node U uAngleU P Load Q Load P Gen Q Gen
Name kV % MW MVar MW MVar
553 NGD 19.856 99.28 -1.2 0 0.969 2 0
52 N52 115.5 105 0 0 0 6.81 5.137
78 MT 20.828 104.14 -1.6 0 0 0 0
65 IT 114.92 104.47 -0.2 0 0 0 0
82 MT1 21.155 105.77 -1.5 0 0 0 0
155 Nc1 20.551 102.75 -1.6 0.192 0.119 0 0189 NC5 19.844 99.22 -1.3 1.73 0.633 0 0
185 NC4 19.878 99.39 -1.4 1.328 0.695 0 0
181 NC3 19.979 99.89 -1.5 1.509 0.765 0 0
177 Nc2 20.276 101.38 -1.5 0.521 0.294 0 0
205 NC7 20.522 102.61 -2.2 0.455 0.221 0 0
201 NC8 20.602 103.01 -2.1 0.592 0.252 0 0
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
17/25
197 NC9 20.76 103.8 -2 0.246 0.126 0 0
193 NC10 20.947 104.73 -1.8 0.331 0.16 0 0
209 NC6 20.474 102.37 -2.3 1.619 0.773 0 0
conectare la c5 capacitiv=0.9
ID Node U uAngleU P Load Q Load P Gen Q Gen
Name kV % MW MVar MW MVar
553 NGD 20.267 101.33 -2.3 0 0 2 0.969
52 N52 115.5 105 0 0 0 6.73 3.018
78 MT 20.828 104.14 -1.6 0 0 0 0
65 IT 115.081 104.62 -0.2 0 0 0 0
82 MT1 20.829 104.14 -1.6 0 0 0 0
155 Nc1 20.635 103.18 -1.8 0.192 0.119 0 0
189 NC5 20.231 101.15 -2.3 1.73 0.633 0 0
185 NC4 20.216 101.08 -2.3 1.328 0.695 0 0
181 NC3 20.257 101.29 -2.3 1.509 0.765 0 0
177 Nc2 20.447 102.24 -2 0.521 0.294 0 0
205 NC7 20.185 100.93 -2.3 0.455 0.221 0 0
201 NC8 20.267 101.33 -2.2 0.592 0.252 0 0
197 NC9 20.428 102.14 -2 0.246 0.126 0 0
193 NC10 20.617 103.09 -1.8 0.331 0.16 0 0
209 NC6 20.137 100.68 -2.3 1.619 0.773 0 0
b)Variatia nivelului de tensiune in retea considerand sursa distribuita conectata direct la bara de medietensiune si generand o putere maxima Pgd=8MW.
Conectarea la bara de MT pentru cos fi = 1
ID Node U u
Angle
U P Load Q Load P Gen Q Gen
Name kV % MW MVar MW MVar
553 NGD 21.334 106.67 -1.8 0 0 1 0.484
52 N52 115.5 105 0 0 0 7.894 3.755
78 MT 21.053 105.26 -2.1 0 0 0 0
65 IT 114.998 104.54 -0.2 0 0 0 0
82 MT1 21.169 105.85 -1.6 0 0 0 0
155 Nc1 20.736 103.68 -2.4 0.192 0.119 0 0
189 NC5 19.885 99.42 -3.4 1.73 0.633 0 0
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
18/25
185 NC4 19.943 99.71 -3.3 1.328 0.695 0 0
181 NC3 20.072 100.36 -3.1 1.509 0.765 0 0
177 Nc2 20.419 102.1 -2.7 0.521 0.294 0 0
205 NC7 20.537 102.69 -2.3 0.455 0.221 0 0
201 NC8 20.617 103.09 -2.2 0.592 0.252 0 0
197 NC9 20.775 103.88 -2 0.246 0.126 0 0
193 NC10 20.962 104.81 -1.8 0.331 0.16 0 0
209 NC6 20.49 102.45 -2.3 1.619 0.773 0 0
conectarea MT pt cos fi=0.95 capacitiv
ID Node U uAngleU P Load Q Load P Gen Q Gen
Name kV % MW MVar MW MVar553 NGD 21.277 106.38 -1.7 0 0 1 0.329
52 N52 115.5 105 0 0 0 7.894 3.917
78 MT 21.026 105.13 -2.1 0 0 0 0
65 IT 114.986 104.53 -0.2 0 0 0 0
82 MT1 21.167 105.84 -1.6 0 0 0 0
155 Nc1 20.708 103.54 -2.4 0.192 0.119 0 0
189 NC5 19.856 99.28 -3.4 1.73 0.633 0 0
185 NC4 19.914 99.57 -3.3 1.328 0.695 0 0
181 NC3 20.043 100.21 -3.1 1.509 0.765 0 0
177 Nc2 20.391 101.95 -2.7 0.521 0.294 0 0205 NC7 20.535 102.67 -2.3 0.455 0.221 0 0
201 NC8 20.615 103.08 -2.2 0.592 0.252 0 0
197 NC9 20.773 103.87 -2 0.246 0.126 0 0
193 NC10 20.96 104.8 -1.8 0.331 0.16 0 0
209 NC6 20.487 102.44 -2.3 1.619 0.773 0 0
conectarea MT pt cos fi= 0.95, inductiv
ID Node U uAngleU P Load Q Load P Gen Q Gen
Name kV % MW MVar MW MVar
553 NGD 21.033 105.16 -1.4 0 0.329 1 0
52 N52 115.5 105 0 0 0 7.9 4.612
78 MT 20.909 104.54 -2.1 0 0 0 0
65 IT 114.934 104.49 -0.2 0 0 0 0
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
19/25
82 MT1 21.157 105.79 -1.6 0 0 0 0
155 Nc1 20.589 102.94 -2.4 0.192 0.119 0 0
189 NC5 19.732 98.66 -3.4 1.73 0.633 0 0
185 NC4 19.79 98.95 -3.3 1.328 0.695 0 0
181 NC3 19.92 99.6 -3.1 1.509 0.765 0 0
177 Nc2 20.27 101.35 -2.7 0.521 0.294 0 0
205 NC7 20.525 102.62 -2.3 0.455 0.221 0 0
201 NC8 20.605 103.02 -2.2 0.592 0.252 0 0
197 NC9 20.763 103.81 -2 0.246 0.126 0 0
193 NC10 20.95 104.75 -1.8 0.331 0.16 0 0
209 NC6 20.477 102.39 -2.3 1.619 0.773 0 0
conectarea MT pt cos fi= 0.9 ,inductiv
ID Node U u
Angle
U P Load Q Load P Gen Q Gen
Name kV % MW MVar MW MVar
553 NGD 20.974 104.87 -1.3 0 0.484 1 0
52 N52 115.5 105 0 0 0 7.903 4.779
78 MT 20.88 104.4 -2.1 0 0 0 0
65 IT 114.921 104.47 -0.2 0 0 0 0
82 MT1 21.155 105.77 -1.6 0 0 0 0
155 Nc1 20.56 102.8 -2.4 0.192 0.119 0 0
189 NC5 19.702 98.51 -3.4 1.73 0.633 0 0
185 NC4 19.76 98.8 -3.3 1.328 0.695 0 0
181 NC3 19.89 99.45 -3.1 1.509 0.765 0 0
177 Nc2 20.241 101.2 -2.7 0.521 0.294 0 0
205 NC7 20.522 102.61 -2.3 0.455 0.221 0 0
201 NC8 20.602 103.01 -2.2 0.592 0.252 0 0
197 NC9 20.761 103.8 -2 0.246 0.126 0 0
193 NC10 20.947 104.74 -1.8 0.331 0.16 0 0
209 NC6 20.475 102.37 -2.3 1.619 0.773 0 0
conectarea MT pt cos fi = 0.9 ,capacitiv
ID Node U uAngleU P Load Q Load P Gen Q Gen
Name kV % MW MVar MW MVar
553 NGD 21.334 106.67 -1.8 0 0 1 0.484
52 N52 115.5 105 0 0 0 7.894 3.755
78 MT 21.053 105.26 -2.1 0 0 0 0
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
20/25
65 IT 114.998 104.54 -0.2 0 0 0 0
82 MT1 21.169 105.85 -1.6 0 0 0 0
155 Nc1 20.736 103.68 -2.4 0.192 0.119 0 0
189 NC5 19.885 99.42 -3.4 1.73 0.633 0 0
185 NC4 19.943 99.71 -3.3 1.328 0.695 0 0
181 NC3 20.072 100.36 -3.1 1.509 0.765 0 0
177 Nc2 20.419 102.1 -2.7 0.521 0.294 0 0
205 NC7 20.537 102.69 -2.3 0.455 0.221 0 0
201 NC8 20.617 103.09 -2.2 0.592 0.252 0 0
197 NC9 20.775 103.88 -2 0.246 0.126 0 0
193 NC10 20.962 104.81 -1.8 0.331 0.16 0 0
209 NC6 20.49 102.45 -2.3 1.619 0.773 0 0
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
21/25
Reglajul tensiunii in functie de regimurile de functionare ale sursei distribuite ,astfel incat nivelul
de tensiune pe bara de MT a ST sa fie egala cu 21,5 kV
In acest caz se urmareste obtinerea unei tensiuni de 21,5 kVpe bara de MT a statiei.
Se calculeaza prize de functionare pentru cele 2 regimuri(cos fi=0.95,capacitive si
inductive),pentru fiecare situatie de conectare a sursei distribuite la retea.
Psc= 94 [kW]
r0 IT= 0.122 /km
U1= 115.5 kV
UnMT= 22 kV
x0 IT= 0.386 /km
U2dorit= 21.5 kV
SnT= 16 MVA
L it= 22.5 km
Utrafo= 1.78
% pt unplot
u sc= 11 %
Un IT= 110 kV
Rt= 0.177719
Zt= 3.3275
Xt= 3.332243
Rst= 0.088859
Xst= 1.666121
RL= 2.745
XL= 8.685
R= 2.833859
X= 10.35112
a)Pentru cazul sursei distribuite conectate in nodul consumatorului C5,avand cos
fi=0.95,inductive:
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
22/25
P2= 0.523 MW
Q2= 6.667 MVAr
np= 3.860157 ==> nr ploturi= 4
b)Pentru cazul sursei distribuite conectate in nodul consumatorului C5,avand cos
fi=0.95,capacitiv:
P2= 0.523 MW
Q2= 1.409 MVAr
np= 4.108035 ==> nr ploturi= 4
c)Pentru cazul sursei distribuite conectate direct la statia de MT,avand cos fi=0.95,inductivv:
P2= 0.523 MW
Q2= 6.667 MVAr
np= 3.860157 ==> nr ploturi= 4
d)Pentru cazul sursei distribuite conectate direct la statia de MT,avand cos fi=0.95,capacitiv:
P2= 0.523 MW
Q2= 1.409 MVAr
np= 4.108035 ==> nr ploturi= 4
Stabilirea prizei optime de functionare atransformatorului in scopul minimizarii pierderilor de putere
active
Se determina priza optima de functionare avand valori intre 8 si -8 pentru plotul active al transformatoarelor
in Neplan tinand cont de urmatoarele restrictii:
Umt>18 kV
Umt
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
23/25
a)Pentru cazul sursei distribuite conectate in nodul consumatorului C5,avand cos fi =0.95,inductiv:
nr priza dp
4 Network MW losses = 0.522225
3 Network MW losses = 0.505375
2 Network MW losses = 0.489081
1 Network MW losses = 0.473331
0Network MW losses =0.458116 U>22
Deci delta P min pentru plot=2 este optim
b)Pentru cazul sursei distribuite conectate in nodul consumatorului C5,avand cos fi =0.95,capacitiv:
nr priza dp
4 Network MW losses = 0.272158
3 Network MW losses = 0.265696
2 Network MW losses = 0.259418
1 Network MW losses = 0.253326
0Network MW losses =0.247426 U>22
Deci delta P min pentru plot=3 este optim.
c)Pentru cazul sursei distribuite conectate direct la statia de MT,avand cos fi =0.95,inductiv
nr priza dp
4 Network MW losses = 0.994769
3 Network MW losses = 0.961509
2 Network MW losses = 0.929187
1 Network MW losses = 0.897780
0Network MW losses =0.867267 U>22
-1 Network MW losses = 0.837625
Deci delta P min pentru plot=1 este optimd)Pentru cazul sursei distribuite conectate direct la statia de MT,avand cos fi =0.95,capacitiv
nr priza dp
4 Network MW losses = 0.849003
3 Network MW losses = 0.824363
2 Network MW losses =0.800198
1 Network MW losses = 0.776508
0Network MW losses =0.753292 U>22
-1 Network MW losses = 0.730607
Deci delta P min pentru plot=1 este optim
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
24/25
Stabilirea configuratiei optime a retelei de MT prin reconfigurare in prezenta SD
Pentru recofigurarea retelei electrice de medie tensiune se deconecteaza pe rand cate o linie pentru agasi configuratia cu pierderi minime.
a)Pentru cazul sursei distribuite conectate in nodul consumatorului C5,avand cos fi=0.95,inductiv,iar
transformatoarele functionand pe plotul 2,calculate anterior ca fiind optim pentru acest regim defunctionare si mod de conectare:
Se alege pentru a fi deconectata linia dintre consunmatorii C6 si C7,deoarece are pierderile minime, dupacum se poate observa si in tabelul anterior.
b)Pentru cazul sursei distribuite conectate in nodul consumatorului C5,avand cos fi=0.95,capacitiv,iartransformatoarele functionand pe plotul 3,calculate anterior ca fiind optim pentru acest regim de
functionare si mod de conectare:
LC 1-2 0.115001
LC 2-3 0.109879
LC 3-4 0.163438
LC 4-5 0.290442
LC 5-6 0.265696
LC 6-7 0.135961
LC 7-8 0.119028
LC 8-9 0.109367
LC 9-10 0.109883
Se alege pentru a fi deconectata linia dintre consunmatorii C8 si C9,deoarece are pierderile minime, dupacum se poate observa si in tabelul anterior.
c)Pentru cazul sursei distribuite conectate direct la statia de MT,avand cos fi=0.95,inductiv,iar
transformatoarele functionand pe plotul 1,calculate anterior ca fiind optim pentru acest regim de
functionare si mod de conectare:linie deconectata delta P
LC 1-2 1.402137
LC 2-3 1.267799
LC 3-4 1.004097
LC 4-5 0.894273
LC 5-6 0.89778
linie deconectata delta P
LC 1-2 0.542023
LC 2-3 0.492868
LC 3-4 0.449212
LC 4-5 0.504773
LC 5-6 0.489081
LC 6-7 0.43698
LC 7-8 0.445368
LC 8-9 0.467361
LC 9-10 0.484461
-
8/10/2019 Buicescu Lucian MS912321-Proiect IGD
25/25
LC 6-7 1.054919
LC 7-8 1.128397
LC 8-9 1.241664
LC 9-10 1.298233
Se alege pentru a fi deconectata linia dintre consunmatorii C4 si C5,deoarece are pierderile minime, dupa
cum se poate observa si in tabelul anterior.
d)Pentru cazul sursei distribuite conectate direct la statia de MT,avand cos fi=0.95,capacitiv,iartransformatoarele functionand pe plotul 1,calculate anterior ca fiind optim pentru acest regim de
functionare si mod de conectare:
linie deconectata delta P
LC 1-2 1.303724
LC 2-3 1.169962
LC 3-4 0.904399
LC 4-5 0.787739
LC 5-6 0.776508
LC 6-7 0.90614
LC 7-8 0.968852
LC 8-9 1.066129
LC 9-10 1.114575
Se alege pentru a fi deconectata linia dintre consunmatorii C3 si C4,deoarece are pierderile minime,dupa cum se poate observa si in tabelul anterior.
Analiza influntei sursei distribuite asupra curentilor de scurtcircuit
Curent de scurtcircuit generator asincron nod C5