scholarly journals STUDI RUGI DAYA SISTEM KELISTRIKAN BALI AKIBAT PERUBAHAN KAPASITAS PEMBANGKITAN DI PESANGGARAN

2015 ◽  
Vol 14 (2) ◽  
pp. 39
Author(s):  
I P. A. Edi Pramana ◽  
W. G. Ariastina ◽  
I. W. Sukerayasa
Keyword(s):  
Peak Load ◽  
Flow Analysis ◽  
Load Flow ◽  
Power Losses ◽  
Electrical Transmission ◽  
Electrical Systems ◽  
Load Flow Analysis ◽  
Electricity System ◽  
Power And Energy ◽  
Plant Capacity

In the years of 2014 until 2015 Pesangaran plant capacity undergo changes due to the expiration of employment contract lease diesel units and also the addition of new plant unit of 200 MW PLTMG. An increase or reduction in plant capacity of electrical system Bali will lead to significant changes to the load flow, power losses and energy losses in the circuit of Bali electrical Transmission system. Load flow analysis and power losses in Bali electricity system is simulated in five scenarios. Scenario 1 for the conditions of existing in 2014, scenario 2 is currently experiencing a reduction Pesanggaran plant capacity in December 2014, scenario 3 is currently experiencing Pesanggaran plant capacity additions in 2015 by using a peak load of 2014, scenario 4 is the scenario 3 with using predicted peak load in 2015, and scenario 5 is the scenario 4 with assuming the Celukan Bawang plant operates at 130 MW. Based on the results obtained by analysis, scenario 2 has the most power and energy loss about 46.34 MW and 300.39 GWh. For the loss of power and energy Bali electrical systems after Pesanggaran plants changes in 2015 are 38.57 MW and 250.05 GWh.

scholarly journals Cost Sustainability Analysis of an Enhanced Distribution Network

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Oluleke Babayomi ◽  
Sunday Adetona ◽  
Charles Osheku ◽  
Ayodele Opasina
Keyword(s):  
Capital Investment ◽  
Energy Savings ◽  
Distribution Network ◽  
Flow Analysis ◽  
Load Flow ◽  
Solar Pv ◽  
Voltage Profile ◽  
Power Losses ◽  
Load Flow Analysis ◽  
Sustainability Analysis

This study presents the cost sustainability analysis of an enhanced distribution network (DN). In the study, the enhancement of the DN was achieved through network reconfiguration (NR) and the introduction of distributed generation units (DGs) at some locations. When the DN was only reconfigured, the power losses in the network reduced by 23.39 % at 1.0 p.u loading; whereas, the minimum voltage profile in the network improved by 1.79 %. When both reconfiguration and DG were engaged in losses minimization, power losses reduced by 61.94 % at full load, whereas the minimum voltages in the network improved by 7.66 %. When the DN was reconfigured and DGs were embedded at three different locations, the energy losses in the entire network reduced by 61.94 % and 58.37 % at 0.5 and 1.0 loadings respectively; whereas, the minimum voltages in the network improved by 1.21 % and 8.46 % at 0.5 p.u and 1.0 p.u loadings respectively. The information obtained from the load flow analysis was used for the economic analysis of the DN when both reconfigured and three DGs were embedded at different locations of the network. The annual financial energy gains evaluated from the annual energy savings was about $125,000.00, when the DN operated at 100 % loading capacity all year round. The financial savings are sufficient to cover annual operational cost of solar PV DGs; as well as, recovering its capital investment with a payback period of 5 years.

Operation Characteristics of Zone 3 Distance Protection in Wind Power Systems with Fixed-Speed Induction Generators

2011 ◽  
Vol 12 (4) ◽  
Author(s):  
Shenghu Li
Keyword(s):  
Power Systems ◽  
Wind Power ◽  
Reactive Power ◽  
Flow Analysis ◽  
Load Flow ◽  
Synchronous Generators ◽  
Induction Generators ◽  
Load Flow Analysis ◽  
Wind Power Systems ◽  
Operation Characteristics

The induction generators (IGs) are basic to wind energy conversion. They produce the active power and consume the reactive power, with the voltage characteristics fragile compared with that of the synchronous generators and doubly-fed IGs. In the stressed system states, they may intensify var imbalance, yielding undesirable operation of zone 3 impedance relays.In this paper, the operation characteristics of the zone 3 relays in the wind power systems is studied. With the theoretical and load flow analysis, it is proved that the equivalent impedance of the IGs lies in the 2nd quadrature, possibly seen as the backward faults by the mho relays, i.e. the apparent impedance enters into the protection region from the left side. The undesirable operation may be caused by more wind power, larger load, less var compensation, and larger torque angle.

Load Flow Analysis for Micro Grid

2021 ◽  
pp. 177-196
Author(s):  
P. Sivaraman ◽  
C. Sharmeela ◽  
S. Elango
Keyword(s):  
Flow Analysis ◽  
Load Flow ◽  
Load Flow Analysis ◽  
Micro Grid
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