Syahrun Nizam Md Arshad @ Hashim
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Syahrun Nizam Md Arshad @ Hashim
Official Name
Syahrun Nizam, Md Arshad @ Hashim
Alternative Name
Arshad, S. N.M.
Arshad, Syahrun Nizam Bin M.
Nizam Md Arshad, Syahrun
Md Arshad, Syahrun Nizam
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Scopus Author ID
56177750400

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  • Publication
    Analysis of wavelet transform de-noising technique based on measured lightning return stroke electric field
    ( 2021-05-03)
    Syahrun Nizam Md Arshad @ Hashim
    ;
    Ab Kadir M.Z.A.
    ;
    Izadi M.
    ;
    Hamzah M.N.
    ;
    Amizah Md. Ariffen
    ;
    Wooi C.L.
    ;
    Anuar A.
    This paper presents a difference type of wavelet transform de-noising technique based on measured lightning electric field. The lightning electric fields captured by two parallel plats sensor and the signal were analyses accordingly. In engineering application, lightning stroke current parameter will relate with electric fields and these parameters can be recognized by direct and in-direct measuring method. Therefore, measuring lightning electric fields (LEF) using parallel plate was done by many researchers. However, measuring LEF has many disturbances such as noise from other apparatus and other device. Therefore, de-noising of LEF signal is important to get useful signal for further research. For this reason, the Centre for Electromagnetic and Lighting Protection Research (CELP) group has been working on a research program to study and characteristic lightning using de-noising technique in order to process and analyse the radiated LEF produced during flash happens. Only three types of wavelet transform are selected and there are Daubechies, Symlets and Coiflets wavelet. The result will be discussed and the best will be selected based on the measured signal.
  • Publication
    Analysis on Behavior Grounding Electrode Resistance base on Profiling Method
    ( 2020-07-09)
    Hashim N.H.
    ;
    Syahrun Nizam Md Arshad @ Hashim
    ;
    Halim N.H.
    ;
    Wooi Chin Leong
    ;
    Ariffen A.M.
    ;
    Anuar A.
    ;
    Aqilah Sofiyah Hasni N.
    ;
    Abu Bakar O.
    An earthing system or known as grounding system in an electrical installation where by the grounding system connects specific parts of that installation with the Earth's conductive surface for safety and functional purposes. It is the process of transferring the immediate discharge with the aid of the low resistance wire of the electrical energy directly to the earth. It is really an important role playing in electrical system part as grounding system give protection during fault or lightning occur. In addition, grounding system also give protection for human electrical appliance and building from electrical shocks due to electrical fault or lighting occur. In this research will shows that to identify the best location to install the grounding electrode. This method is used on 10 x 10 meters which is 121 point will be investigated. The result of 0.3m, 0.6m, and 0.9m were analyzed using MATLAB software to produce profiling and shows the perfect location to install the Grounding system electrode.
  • Publication
    Effect of concrete orientation as an enhancement material in grounding system
    ( 2020-07-09)
    Hasni N.A.S.
    ;
    Syahrun Nizam Md Arshad @ Hashim
    ;
    Amizah Md. Ariffen
    ;
    Halim N.H.
    ;
    Wooi Chin Leong
    ;
    Muhammad Izuan Fahmi Romli
    ;
    Bakar O.A.
    To achieve an excellent grounding system, an alternative solution was developed by using enhancement material to modify the soil surrounding the rod. These materials can effectively reduce soil resistivity and grounding resistance for a better grounding system. To achieve this goal, the fundamental part must be taken into account. In this study, the main objective is to analyze different concrete orientations as enhancement material in the grounding system. A 3-D orientation of concrete has been designed using Finite Element Method (FEM) software to analyze the performance of the electric field in the grounding system with different orientation of concrete. Every orientation of concrete had been clarified into four different cases which are full concrete, half concrete, three-quarter concrete, and a quarter concrete. From the result, full concrete is the best orientation of concrete design to be employed at the grounding site as it has a low electric field compared to the other concrete orientation.
  • Publication
    Performance of Restricted Fault and Bias Differential Protection Against Earth Fault on a Transformer
    ( 2022-01-01)
    Nor Haidar Hashim
    ;
    Halim N.H.
    ;
    Syahrun Nizam Md Arshad @ Hashim
    ;
    Hussain M.H.
    ;
    Rahim S.R.A.
    ;
    Suleiman A.A.
    In this paper, the effectiveness of restricted earth fault and bias differential protection against earth fault on of transformer winding is presented. Earth fault is one of the failures that occurs on a power transformer winding. Its magnitude depends on how the neutral is connected and the location of fault. For a transformer which is connected to Neutral Earth Resistance (NER), as the fault moves towards its neutral, the magnitude of fault current decreases and the detection of fault diminishes, thus limiting percentage of winding that can be protected. To overcome this problem, restricted earth fault is employed. This paper will show that based on its principles, restricted earth fault protection is more sensitive and provide better coverage for the star winding against earth fault especially resistance earthed.
  • Publication
    Partial Discharge Rise Time Characteristic based on Experimental Measurement in Power Cable
    ( 2023-01-01)
    Hashim M.H.
    ;
    Ahmad Zaidi Abdullah
    ;
    Syahrun Nizam Md Arshad @ Hashim
    ;
    Muzamir Isa
    ;
    Jamal A.
    ;
    Aziza N.
    This study presents a comprehensive investigation into the rise time characteristics of partial discharges (PD) in cable insulation through experimental measurements. Partial discharges are a critical phenomenon in high-voltage systems, serving as an early indicator of insulation degradation. Understanding the rise time of partial discharges is essential for assessing the severity of insulation defects and ensuring the reliability of power cable systems. The experimental setup involved controlled conditions to induce partial discharges in cable samples, allowing for precise measurement and analysis of the rise time. The study explores the correlation between rise time and different factors such as cable design, insulation material, and defect type. Results indicate that the rise time of partial discharges exhibits distinct patterns based on these factors, providing valuable insights into the nature of insulation defects. The findings contribute to the development of effective diagnostic tools for condition monitoring in power cable systems, ultimately enhancing the reliability and safety of electrical infrastructure.
  • Publication
    Accelerated thermal aging of Kraft papers impregnated with dielectric liquids
    (Institute of Advanced Engineering and Science (IAES), 2023)
    Imran Sutan Chairul
    ;
    Norazhar Abu Bakar
    ;
    Sharin Ab Ghani
    ;
    Mohd Shahril Ahmad Khiar
    ;
    Nor Hidayah Rahim
    ;
    Syahrun Nizam Md Arshad @ Hashim
    Accelerated thermal aging was conducted on Kraft papers impregnated with mineral insulating oil (MO) and palm insulating oil (PO), and the effect of aging time on the oils and Kraft papers was observed. Each sample consisted of insulating oil, dried Kraft paper, and weighed metal catalysts (copper, iron, zinc, and aluminum) in a bottle. Prior to aging, the bottles were left for 24 h at room temperature for impregnation to take place. The thermal aging experiments were carried out at 130 °C for 250, 500, and 750 h. The properties of the MO and PO (moisture content, acidity, and ultraviolet-visible absorption spectra) and the properties of the Kraft papers (tensile strength and colour) were determined. Results showed that the aged PO had higher moisture content compared with the aged MO. However, the Kraft papers impregnated with PO had better tensile strength after 750 h of aging, which may be attributed to the affinity of PO to moisture. This slows down the hydrolytic degradation mechanism. In terms of colour, the Kraft papers were darker than their original colour as the tensile strength decreased. To conclude, the Kraft paper impregnated with PO had higher tensile strength compared with those impregnated with MO.
  • Publication
    Prototyping a RF signal-based lightning warning device using with Internet of Things (IOT) integration
    ( 2020-01-07)
    Hwang Y.J.
    ;
    Wooi Chin Leong
    ;
    Rohani M.N.K.
    ;
    Mehranzamir K.
    ;
    Syahrun Nizam Md Arshad @ Hashim
    ;
    Ahmad N.A.
    Lightning had caused at least 25, 000 deaths worldwide each year. The study aims to investigate the induced voltage generated by lightning strikes using a lightning detector. Proteus software was employed to simulate the main board of the lightning detector before fabrication. The lightning detector was designed as a radio frequencies receiver and it was tuned to the level (300 kHz to 500 kHz) which enabled it to receive signals from lightning strikes. A lightning simulator was designed using various resistance (100 Ω to 200 Ω) to test the functionality of a lightning detector in order to validate the accuracy of the proposed model. This lightning detector could be activated whenever a small induced voltage (0.2 V and above) were generated by lightning events occurred within 10 km from the detector. This detector captures both the induced voltage and the time difference detected lightning discharge and its sound for further analysis. The time to thunder method was employed to find the estimated lightning discharges distances in parallel to this system in order to validate the current lightning detector. The accuracy of the lightning detector was found to be 88.03%.The analysed data were delivered to the user's smartphone using cloud system.
      21  1
  • Publication
    The effect of semi-conductive and non-conductive nano particles in sunflower oil based insulation
    ( 2020-01-07)
    Nuriziani Hussin
    ;
    Kwong Yeaw L.
    ;
    Ahmad Nabil Mohd Khalil
    ;
    Kamarol Mohd Jamil M.
    ;
    Norkharziana Mohd Nayan
    ;
    Syahrun Nizam Md Arshad @ Hashim
    ;
    Ainanie Azizie N.
    Following the improvement of technology, more and more alternatives are introduced to improve the insulation material and one of them is the nanotechnology. Research had been done which confirm the enhancement of the transformer oil upon adding nanoparticles in term of dielectric strength, viscosity, relative permittivity and others. In this research, semi-conductive (ZnO) and non-conductive (ZrO2) nanoparticles with weigh to volume ratio of 0.05g/l are added to the sunflower oil based insulation and the effects are observed. The relative permittivity of added ZnO is higher compare to ZrO2 in mineral oil. The situation is opposite as ZrO2 yield higher permittivity with sunflower oil. In term of breakdown voltage, the addition of ZnO shows a better dielectric strength compare to ZrO2. The kinematic viscosity is also increase when both nanoparticles are added in which ZnO contributes a higher value.
      1  35
  • Publication
    Impact of Vibration Exciter on the Partial Discharge Characteristics in XLPE Cable
    ( 2023-01-01)
    Laili M.S.
    ;
    Abdul Halim M.H.A.
    ;
    Syahrun Nizam Md Arshad @ Hashim
    ;
    Isa M.
    ;
    Zakaria Z.N.B.
    In power transmission, the durability and efficiency of power cables are significantly influenced by mechanical stresses. Mechanical stresses like vibration, torsion, and bending can cause fatigue in power cable insulation, leading to cracks and partial discharge. This phenomenon can affect the insulation performance of the cable. The study aims to correlate the relationship between vibration and PD, and how vibration strength and frequency influence PD occurrence. The measurements used a vibration exciter to simulate environmental vibration of 30 Hz, 50 Hz, and 70 Hz. A 20 pC PD signal was injected to the XLPE cable and the measurements were measured by HFCT and Rogowski coil sensors. The results showed a significant increase in the amplitude of the PD charge when subjected to high-frequency vibrations.
      3  22
  • Publication
    High voltage Testing characteristics of kenaf as grounding enhancement material
    ( 2022-01-01)
    Bakar O.A.
    ;
    Syahrun Nizam Md Arshad @ Hashim
    ;
    Othman M.B.
    ;
    Wooi Chin Leong
    ;
    Adzis Z.
    Lightning protection elements consist of a grounding system. The grounding system's main task is to disburse the current into the earth safely. This research aims to lower the resistance, thus creating a good path for the grounding system using natural enhancement material as backfill material. Since the kenaf core is brittle, not dense and loose, therefore clay as a bonding agent is mixed as a backfill material. Various mixtures of clay and kenaf are filled in the acrylic box. The sample goes through the high voltage AC and DC levels until the sample breakdown reaches. The upper limit of voltage depends on the material and its condition, either dry or wet. The data records the temperature and relative humidity of the laboratory before running the testing. After every increment, high voltage AC will be applied constantly for ten seconds at the backfill material. The testing also observes any physical changes in the material. From HVAC and HVDC tests, kenaf shows high conductivity. The breakdown voltage considers higher when the percentage of kenaf mix is low. The results show that kenaf has high conductivity and is suitable for use as a natural enhancement material for grounding purposes.
      1  17