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Frontiers in Energy

ISSN 2095-1701

ISSN 2095-1698(Online)

CN 11-6017/TK

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Front. Energy    2020, Vol. 14 Issue (2) : 410-418    https://doi.org/10.1007/s11708-016-0440-8
RESEARCH ARTICLE
A novel method to investigate voltage stability of IEEE-14 bus wind integrated system using PSAT
Satish KUMAR1(), Ashwani KUMAR1, N. K. SHARMA2
1. Department of Electrical Engineering, National Institute of Technology(NIT), Kurukshetra, Haryana 136119, India
2. Department of?Electrical Engineering, G L Bajaj Institute of Technology and Management, Greater Noida, Utter Pradesh 201306,??India
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Abstract

The maximum demand of power utilization is increasing exponentially from base load to peak load in day to day life. This power demand may be either industrial usage or household applications. To meet this high maximum power demand by the consumer, one of the options is the integration of renewable energy resources with conventional power generation methods. In the present scenario, wind energy system is one of the methods to generate power in connection with the conventional power systems. When the load on the conventional grid system increases, various bus voltages of the system tend to decrease, causing serious voltage drop or voltage instability within the system. In view of this, identification of weak buses within the system has become necessary. This paper presents the line indices method to identify these weak buses, so that some corrective action may be taken to compensate for this drop in voltage. An attempt has been made to compensate these drops in voltages by integration of renewable energy systems. The wind energy system at one of the bus in the test system is integrated and the performance of the system is verified by calculating the power flow (PF) using the power system analysis tool box (PSAT) and line indices of the integrated test system. The PF and load flow results are used to calculate line indices for the IEEE-14 bus test system which is simulated on PSAT.
Keywords voltage stability      line indices      power system analysis tool box (PSAT)      wind system      line loading      power flow (PF)     
Corresponding Author(s): Satish KUMAR   
Just Accepted Date: 08 November 2016   Online First Date: 20 December 2016    Issue Date: 22 June 2020
 Cite this article:   
Satish KUMAR,Ashwani KUMAR,N. K. SHARMA. A novel method to investigate voltage stability of IEEE-14 bus wind integrated system using PSAT[J]. Front. Energy, 2020, 14(2): 410-418.
 URL:  
https://academic.hep.com.cn/fie/EN/10.1007/s11708-016-0440-8
https://academic.hep.com.cn/fie/EN/Y2020/V14/I2/410
Fig.1  Report of PF for bus voltages using PSAT
Fig.2  Graphical user interface (GUI) of PSAT for PF analysis
Fig.3  IEEE-14 bus test system simulated on PSAT
Bus No. V/p.u. Phase (Radian) P gen./p.u. Q gen./p.u. P load/p.u. Q load/p.u.
Bus 1 1.06 0 7.764 2.390 0 0
Bus 2 0.931 –0.3140 0.101 1.7701 0.514 0.301
Bus 3 0.872 –0.7998 0.019 1.689 2.234 0.450
Bus 4 0.799 –0.6182 0 0 1.133 0.094
Bus 5 0.811 –0.5168 0 0 0.180 0.037
Bus 6 0.862 –0.9064 0.017 0.887 0.265 0.177
Bus 7 0.842 –0.9064 0 0 0 0
Bus 8 1.003 –0.8273 0.014 0.917 0 0
Bus 9 0.770 –0.8302 0 0 0.699 0.393
Bus 10 0.764 –0.9418 0 0 0.213 0.137
Bus 11 0.800 –0.9556 0 0 0.083 0.042
Bus 12 0.810 –0.9385 0 0 0.144 0.037
Bus 13 0.790 –0.9644 0 0 0.320 0.137
Bus 14 0.715 –1.0341 0 0 0.353 0.118
Tab.1  PF from PSAT without wind integration
Bus No. Line loading 25% Line loading 50% Line loading 75% Line loading 100%
Bus 1 0.2512 0.3113 0.3233 0.3390
Bus 2 0.2870 0.2930 0.3125 0.3208
Bus 3 0.3512 0.3555 0.3806 0.3991
Bus 4 0.3321 0.3061 0.3584 0.4021
Bus 5 0.3802 0.3911 0.4306 0.5389
Bus 6 0.3131 0.4159 0.4233 0.4555
Bus 7 0.4251 0.5031 0.6129 0.7989
Bus 8 0.5002 0.5112 0.5313 0.5672
Bus 9 0.5227 0.5338 0.5440 0.5823
Bus 10 0.6939 0.6998 0.7123 0.7551
Bus 11 0.5030 0.5112 0.5231 0.5667
Bus 12 0.4993 0.5123 0.5693 0.5787
Bus 13 0.5838 0.5879 0.5990 0.6105
Bus 14 0.5980 0.6012 0.6938 0.7989
Tab.2  Line stability indices Lmn (p.u.) for different line loadings without wind integration
Bus No. Line loading 25% Line loading 50% Line loading 75% Line loading 100%
Bus 1 0.1209 0.1354 0.1388 0.1441
Bus 2 0.1338 0.1392 0.1421 0.1480
Bus 3 0.2016 0.2117 0.2230 0.2251
Bus 4 0.2861 0.2989 0.3120 0.3215
Bus 5 0.3081 0.4119 0.4256 0.5330
Bus 6 0.0121 0.1515 0.2136 0.2110
Bus 7 0.3628 0.5376 0.5396 0.6012
Bus 8 0.1213 0.1390 0.2330 0.2517
Bus 9 0.3156 0.3222 0.3318 0.3320
Bus 11 0.3259 0.3330 0.3451 0.3821
Bus 12 0.3591 0.3599 0.4112 0.4213
Bus 13 0.3798 0.3938 0.4169 0.4297
Bus 14 0.5468 0.5829 0.6859 0.6983
Tab.3  Line stability indices FVSI (p.u.) for different line loadings without wind integration
Fig.4  Integration of wind turbine at Bus 14
Bus No. V/p.u. Phase (Radian) P gen./p.u. Q gen./p.u. P load/p.u. Q load/p.u.
Bus 1 1.062 0 3.520 0.281 0 0
Bus 2 1.045 –0.1356 0.4 0.948 0.303 0.177
Bus 3 1.013 –0.3321 0 0.597 1.318 0.266
Bus 4 0.997 –0.2644 0 0 0.669 0.056
Bus 5 1.002 –0.2269 0 0 0.106 0.022
Bus 6 1.074 –0.3695 0 0.444 0.156 0.105
Bus 7 1.036 –0.3393 0 0 0 0
Bus 8 1.093 –0.3393 0 0.334 0.413 0
Bus 9 1.012 –0.3790 0 0 0.126 0.232
Bus 10 1.012 –0.3844 0 0 0.049 0.081
Bus 11 1.035 –0.3798 0 0 0.085 0.025
Bus 12 1.046 –0.9059 0 0 0.109 0.022
Bus 13 1.036 –0.3914 0 0 0.189 0.081
Bus 14 0.996 –0.4105 0 0 0.208 0.072
Tab.4  PF from PSAT with wind integration
Bus No. Line loading 25% Line loading 50% Line loading 75% Line loading 100%
Bus 1 0.1209 0.1354 0.1388 0.1441
Bus 2 0.1338 0.1392 0.1421 0.1480
Bus 3 0.2016 0.2117 0.2230 0.2251
Bus 4 0.2861 0.2989 0.3120 0.3215
Bus 5 0.3081 0.4119 0.4256 0.5330
Bus 6 0.0121 0.1515 0.2136 0.2110
Bus 7 0.3628 0.5376 0.5396 0.6012
Bus 8 0.1213 0.1390 0.2330 0.2517
Bus 9 0.3156 0.3222 0.3318 0.3320
Bus 10 0.3398 0.3412 0.4556 0.5106
Bus 11 0.3259 0.3330 0.3451 0.3821
Bus 12 0.3591 0.3599 0.4112 0.4213
Bus 13 0.3289 0.3301 0.3451 0.3551
Bus 14 0.5468 0.5829 0.6859 0.6983
Tab.5  Line stability indices Lmn (p.u.) for different line loadings with wind integration
Bus No. Line loading 25% Line loading 50% Line loading 75% Line loading 100%
Bus 1 0.3825 0.3878 0.3920 0.4020
Bus 2 0.3121 0.3393 0.3369 0.3820
Bus 3 0.3352 0.3811 0.4111 0.4232
Bus 4 0.2239 0.3020 0.3396 0.3880
Bus 5 0.4267 0.4390 0.4830 0.5239
Bus 6 0.3020 0.4351 0.4442 0.4577
Bus 7 0.3251 0.4550 0.5389 0.5889
Bus 8 0.3111 0.3540 0.3933 0.4812
Bus 9 0.3898 0.3990 0.4320 0.4560
Bus 10 0.5112 0.6219 0.6336 0.5623
Bus 11 0.4354 0.4554 0.4891 0.5320
Bus 12 0.4113 0.4256 0.4389 0.5413
Bus 13 0.4061 0.4778 0.5163 0.5224
Bus 14 0.4431 0.5009 0.6191 0.6196
Tab.6  Line stability indices FVSI (p.u.) for different line loadings with wind integration
Fig.5  Lmn (p.u.) for weak buses without wind integration
Fig.6  FVSI (p.u.) for weak buses without wind integration
Fig.7  Lmn (p.u.) for weak buses with wind integration
Fig.8  FVSI (p.u.) for weak buses with wind integration
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