94 research outputs found
Effect of moisture on electrical response of sand and clay under high impulse voltage applications
No full textPerformance comparison of fixed and single axis tracker photovoltaic system in large scale solar power plants in Malaysia
No full textMalaysia is rapidly expanding the generation capacity of solar power through large scale solar (LSS) projects with the aim to achieve 20% renewable energy mix by 2025. This has motivated many solar industry players to explore the usage of solar PV with single axis tracker (SAT) system. However, many are still hesitant due to the lack of understanding on the comparative performance between fixed mounted solar PV with solar PV with SAT system. This paper aims to provide a comparative analysis on the performance of both systems. Simulation using PVSyst 6.83 was performed in five potential LSS sites spread across Peninsular Malaysia in Perlis, Kelantan, Pahang, Selangor and Johor with the same installed capacity of 10.32MWp. The energy yield and capacity factor for 21 years were simulated. On the average, it was found that SAT outperforms fixed mounted solar PV system by 15.08% based on their performance on their first year operation
Bentonite-concrete mix for ufer grounding
No full textBased on the literature, Bentonite is one of the most efficient grounding improvement material. There are two commercially available types of Bentonite namely Sodium and Calcium Bentonite. However, previous studies have not considered the effect of type of Bentonite on its performance as grounding improvement material. In addition, there were insufficient information of Bentonite which is imperative to explain the effectiveness of Bentonite as grounding improvement material. Based on a series of experimental and theoretical work, both types of Bentonite were characterized and it was found that Sodium Bentonite was better due to its superior moisture absorption and retention capability, swelling capacity under hydrated condition as well as its significantly lower resistivity. Furthermore, the behaviour of backfill materials especially Bentonite under the application of high voltage which could be due to lightning and power system fault events was not studied extensively in the literature. Hence further characterisation of Sodium Bentonite with respect to its high voltage response which includes transient and high alternating voltage was done. Indeed the performance of Sodium Bentonite was found to be superior compared to other selected backfill materials such as sand and cement judging on its lower 50% impulse breakdown voltage as well as alternating breakdown voltage. These information together with the results of statistical studies done on the voltage at breakdown and time to breakdown of Bentonite were not available in the literature. On the other hand, Ufer grounding is an effective grounding practice provided that moisture is present. This is because concrete is the main component of Ufer grounding and previous studies have concluded that concrete exhibits significantly higher resistivity when the moisture content is low. The good properties of Bentonite as grounding improvement material as aforementioned may be able to improve the electrical properties of concrete which in turn will result in an improvement of Ufer grounding. Therefore, introduction of Bentonite into concrete mix of Ufer grounding at 0-70% proportions by volume was done at a site with soil resistivity of 121Ωm and its steady state ground resistance performance was investigated by adopting the Fall of Potential measurement method. After one year of measurement of low frequency ground resistance of Bentonite mixed concrete encased steel cage, 30% Bentonite-concrete mix was found to be the best mix which yield the lowest average ground resistance with the least fluctuation as well. The best mix was found to be about 13% better than the standard concrete mix in terms of ground resistance. Therefore, the behaviour of the best mix was investigated at another site with soil of much higher resistivity at 1672Ωm. Sodium Bentonite was used instead of Calcium Bentonite henceforth due to its superior characteristics and the optimum mixing ration remains at 30% base on the resistivity variation of both type of Bentonite. After six months of monitoring, it was found that the performance of best mix was again superior compared to several other systems which include bentonite slurry, background soil and driven copper rod by judging on the ground resistance as well as cost factor. Hence it can be concluded that the best mix could be a good grounding improvement material which can also be used as fencing‟s foundation as the mechanical strength was not greatly reduced. In the final phase of this research, the best mix together with the standard concrete mix were installed in five sites with various soil resistivity to determine the correlation between ground resistance and the localized soil resistivity. Standard concrete mix was used as well due to its relatively good performance compared to other ratios of Bentonite-concrete mix except for 30%. These correlations would allow prediction of ground resistance of the best mix and standard concrete mix at a given soil resistivity and thus serves as a guide for future applications by engineers in designing grounding system using the best mix. Finally it was found that by comparing their respective correlations, the best mix is 16% better than the standard concrete mix. This difference is significant especially at sites with high soil resistivity
IEC Young Professional Programme: Driving Standardisation
No full textIEC Young Professional Programme: Driving Standardisatio
The efficacy of Relative Strength Index (RSI) in KLSE market trade
No full textThe Relative Strength Index (RSI) is a widely used technical indicator in stock trading because of its simple application. However, its application combined with fundamental analysis in Kuala Lumpur Stock Exchange (KLSE) is yet to be explored extensively. Hence, this study aimed to investigate the effectiveness of RSI as a predictive tool in the KLSE market. First, 39 stocks that met the set of criteria guided by fundamental soundness were identified. Trading signals are then initiated based on the RSI indicators, which are superimposed on the charts of the identified stocks. The return on investment (ROI) was then estimated and benchmarked against KLCI performance over a period of five years starting from 21st July 21, 2018. It was found that the average ROI was 3.46% against KLCI’s -24.37% over the same period of 5 years, measured between 21st July 21, 2018, 21st July 21, 2023. The average ROI improves as the number of trade iterations increases to five. The peak average ROI is approximately 22%. Technology is the top performer, recording an ROI of more than 40%. In conclusion, the combination of RSI and fundamental analysis yielded a mixed set of results. Although it outperforms KLCI, the annualised ROI is only slightly above 4%. Nevertheless, the results of this study provide valuable insights into the application of the RSI as a trading signal generator in the KLSE market
Industry 4.0 - Our national policy
No full textLink to publisher’s homepage at https://www.myiem.org.my
The efficacy of Relative Strength Index (RSI) in KLSE market trade
No full textThe Relative Strength Index (RSI) is a widely used technical indicator in stock trading because of its simple application. However, its application combined with fundamental analysis in Kuala Lumpur Stock Exchange (KLSE) is yet to be explored extensively. Hence, this study aimed to investigate the effectiveness of RSI as a predictive tool in the KLSE market. First, 39 stocks that met the set of criteria guided by fundamental soundness were identified. Trading signals are then initiated based on the RSI indicators, which are superimposed on the charts of the identified stocks. The return on investment (ROI) was then estimated and benchmarked against KLCI performance over a period of five years starting from 21st July 21, 2018. It was found that the average ROI was 3.46% against KLCI’s -24.37% over the same period of 5 years, measured between 21st July 21, 2018, 21st July 21, 2023. The average ROI improves as the number of trade iterations increases to five. The peak average ROI is approximately 22%. Technology is the top performer, recording an ROI of more than 40%. In conclusion, the combination of RSI and fundamental analysis yielded a mixed set of results. Although it outperforms KLCI, the annualised ROI is only slightly above 4%. Nevertheless, the results of this study provide valuable insights into the application of the RSI as a trading signal generator in the KLSE market
Joint Seminar on Control & Automation (Malaysia Automation & Control Alliance)
No full textNowadays, with the advancement of the technology, most of the process and activities has moved towards complete Automation. Real impact from the trend of IR4.0 will further change the way people work, response and adapt. Second wave on industry digitalization has shown the bigger scale of interconnection between human and machine.
Current scenario directly influences the criticality and important of Automation, Instrumentation & Control Professional engineers with practicing certificate to ensure the safety & Success of the nation towards modern society. This seminar will cover important aspect of process safety in industrial Control automation, Cybersecurity, Digitalisation, Building Automation & Modern Process Control. These are important topics for Automation, Control & Instrumentation Professional Engineers deliver by Malaysia Control & Automation Alliance
Evolution of Suruhanjaya Tenaga & Malaysia Electricity Supply Industry 2.0
No full textEvolution of Suruhanjaya Tenaga & Malaysia Electricity Supply Industry 2.
Managing energy saving project for Telecom Towers in Asia
No full textLink to publisher’s homepage at https://www.myiem.org.my
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