2019
DOI: 10.11591/ijece.v9i6.pp5125-5133
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Power system voltage collapse prediction using a new line stability index (NLSI-1): A case study of the 330-kV nigerian national grid

Abstract: The cumulative number of historical and recent power system outages substantiates the fact that further studies are necessary for an improved solution to the issue of voltage instability on the grid and the subsequent system collapse. Voltage collapse is a serious reliability issue which inhibits the objective of running a reliable and secure power system network. In this study, a new line stability index (NLSI_1) for predicting voltage collapse is presented.  The new index considers a switching logic which is… Show more

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Cited by 6 publications
(10 citation statements)
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“…The results obtained indicate the ability of the proposed approach to predict voltage collapse in more complex test networks. These results are validated by those obtained in [1,28]. Table 6 shows the ranking of buses in the NNG-28 bus system in ascending order from weakest to strongest.…”
Section: Voltage Collapse Prediction On Nng 28-bus Systemsupporting
confidence: 79%
See 1 more Smart Citation
“…The results obtained indicate the ability of the proposed approach to predict voltage collapse in more complex test networks. These results are validated by those obtained in [1,28]. Table 6 shows the ranking of buses in the NNG-28 bus system in ascending order from weakest to strongest.…”
Section: Voltage Collapse Prediction On Nng 28-bus Systemsupporting
confidence: 79%
“…From the table, bus 16 was identified as the weakest bus in the system with a reactive power margin of 139.5 MVar and a percentage change of 32.06% in the voltage magnitude as it satisfies the criterion listed in [26]. The results obtained by the proposed approach agrees with those obtained in [1,28]. An R-value of 0.9989 and an MSE value of 1.2527× 10 −7 were obtained using the developed neural network model after cross-validation was done.…”
Section: Voltage Collapse Prediction On Nng 28-bus Systemsupporting
confidence: 78%
“…Power infrastructure in Nigeria is inadequate, outdated and poorly maintained which lead to low revenues, high transmission and distribution losses, power theft and poor tariffs [12], [13], [14]. In Nigeria, the total installed generation capacity is 12,522 MW [15], while the available generation capacity of 4,500MW.…”
Section: Nigerian Energy Systems and Its Power Needsmentioning
confidence: 99%
“…Includes installation of size and location var resources. However, poor reactive power support can lead to voltage drops and even power outages [3].…”
Section: Introductionmentioning
confidence: 99%