Jirsuwankul, Nirudh

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Jirsuwankul, Nirudh
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nirudh.ji@kmitl.ac.th

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    Item type:Publication,
    Novel Techniques for Critical Load Buses Identification and Load Bus's Available Capacity Calculation to Improve Power System Stability
    (2020-07-01)
    Wannoi, Narumon
    ;
    Jirsuwankul, Nirudh
    ;
    Chompoo-Inwai, Chow
    ;
    Chompoo-Inwai, Chai
    ;
    Wannoi, Chaisit
    this paper presents two novel techniques for critical load buses identification and load bus's available capacity (LBAC) calculation to improve power system stability. The critical load bus identification is applied by contingency analysis considering system violation limits under load shedding impact. The violation limits consist of two limits including voltage and percent loading limits of power transfer equipment. As the LBAC calculation, the available transfer capability (ATC) of all multi-lines connected on each load bus are investigated with the total transfer capability (TTC). To validate the effectiveness of the proposed approach, the modified Thailand power system during summer peak load in areal (load center) is used for a system base case. As the results, it is found that the proposed techniques can effectively obtain and rank critical load buses as well as to calculate the LABC. The strong relation between these two indexes can be applied to improve power system stability.
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    Item type:Publication,
    A Novel Technique to Identify Proper Locations for Distributed Renewable Generation Integration to Minimize Contingency Impact
    (2020-07-01)
    Wannoi, Narumon
    ;
    Jirsuwankul, Nirudh
    ;
    Sarikprueck, Piampoom
    ;
    Chompooinwai, Chai
    ;
    Wannoi, Chaisit
    this paper presents a novel technique to define proper locations for distributed renewable generation (DRG) integration to minimize contingency impact. The contingency (n1) analysis and the repeated power flow technique are used to investigate the Critical Voltage Buses (CVB). Then priority rankings are defined in two considerations, the number of impacts and voltage level at the CVB. The POWERWORLD simulator is used in this study to analyze the modified Thailand power system during peak load period. The results show that the proposed technique can identify the priority CVBs, which are the proper locations for DRG installation. With more DRG installations at the CVBs, the numbers of CVB, generator capacity and power system loss can be decreased and the load demand can be increased. This proposed novel technique can be applied effectively for the power system security enhancement.