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All Journal Syntax Literate: Jurnal Ilmiah Indonesia International Journal of Social Service and Research Indonesian Journal of Multidisciplinary Science Journal Of World Science Journal of Social Science Jurnal Ekonomi, Teknologi dan Bisnis Asian Journal of Social and Humanities
Zhiliang, Wang
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Humanities Astronomy Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Public Health Social Sciences Other

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Optimization of the Protection Interlocking Function of a 56 MW Unit Steam Turbine Zhiliang, Wang; Hongwei, Feng; Ihsan, Muhammad
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v9i12.55146

Abstract

There are 2 x 56MW units in Kendari power plant, each unit is equipped with two 100% capacity electric feed pumps, one running and another one backup. During the operation of the unit, two defects, such as large vibration of the BFWP and high temperature of the thrust pad on the working face, were found to affect the operation. The large vibration of the BFWP is mainly due to the falling off of the positioning pin of the bearing bracket of the non-drive end, which causes the center to sink, and the balance drum and the balance sleeve are rubbed dynamically and statically. The main reason for the high temperature of the thrust pad of the BFWP is that the diameter of the balance drum is small, which leads to an increase in the axial thrust borne by the thrust pad of the working face, and the high temperature of the tile. This study aims to diagnose the root causes of these defects, implement corrective measures, and optimize pump performance to enhance operational safety. A combination of on-site inspections, data analysis, and engineering interventions was conducted. Findings indicate that structural realignment and reengineering of the balance drum significantly mitigated vibration and temperature issues. The study concludes that proactive maintenance and design optimization are essential for the reliable operation of power plant equipment, with implications for enhancing long-term efficiency and safety.thrust padthrust pad
Research and Application of Cathodic Protection Technology for Underground Pipelines: A Case Study of the IPP Sumsel-5 Water Intake Project Zhiliang, Wang
Journal Of Social Science (JoSS) Vol 4 No 11 (2025): Journal of Social Science
Publisher : Al-Makki Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57185/c8jv2506

Abstract

Underground pipelines are exposed to continuous electrochemical corrosion during long-term service, which may result in reduced wall thickness, perforation, and leakage, posing serious risks to operational safety. This study examines the application of cathodic protection (CP) technology as an effective and economically viable corrosion prevention strategy, focusing on the underground water intake pipelines of the Sumsel-5 Independent Power Producer (IPP) project. The objective of this research is to evaluate the effectiveness of a constant-potential CP system in controlling corrosion and maintaining pipeline integrity under real operational conditions. The study employed a case study approach, beginning with on-site assessments of environmental characteristics, corrosion patterns, and baseline electrochemical potential. Subsequent stages included CP system design, installation, and monitoring, with technical parameters tailored to site-specific requirements. Field measurements were conducted to evaluate performance, and maintenance procedures were documented to ensure long-term system stability. The results reveal that the implementation of the constant-potential CP system successfully maintained pipeline surface potential below –0.85 V relative to a saturated calomel electrode, meeting international protection standards. The system demonstrated consistent performance with significant reduction in corrosion risk and enhanced operational reliability. This study provides an applicable technical reference for similar water intake and underground transmission pipeline projects, highlighting the importance of integrated system design, monitoring, and maintenance in achieving sustainable corrosion protection.
Research on Maintenance Optimization and Performance Enhancement of a Medium-Speed Roller Mill Zhiliang, Wang
Indonesian Journal of Multidisciplinary Science Vol. 5 No. 2 (2025): Indonesian Journal of Multidisciplinary Science
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/ijoms.v5i2.1219

Abstract

The medium-speed roller mill at Kendari-3 Power Plant’s Unit 2 experienced significant wear, efficiency decline, and operational instability due to prolonged continuous operation, necessitating a systematic optimization approach. This study aims to analyze, implement, and evaluate maintenance optimization strategies to restore and enhance mill performance, while establishing a structured preventive maintenance framework for long-term reliability. A research methodology combining engineering inspection, technical diagnostics, overhaul execution, and quantitative performance testing was employed. The technical interventions included optimization of the maintenance layout, upgrading of critical material components, enhancement of sealing systems, fine adjustments of operational parameters, expansion of air duct capacity, and the development of a performance-based preventive maintenance file. Performance data were collected before and after the overhaul to measure operational gains. The results demonstrate that the mill’s rated output was successfully restored and stabilized at ?35 t/h, accompanied by a 3% reduction in specific power consumption under full-load conditions. Furthermore, the service life of grinding rollers increased by approximately 30%, while total maintenance duration was reduced by 20%, indicating substantial improvements in reliability, efficiency, and maintainability. This research provides valuable technical insights and practical references for optimizing pulverizing systems in thermal power plants and contributes to engineering-based decision-making for equipment maintenance strategies.
Design and Application of the Production Information System at PT Datang DSSP Power Indonesia Zhiliang, Wang
Jurnal Ekonomi Teknologi dan Bisnis (JETBIS) Vol. 4 No. 11 (2025): Jurnal Ekonomi, Teknologi dan Bisnis
Publisher : Al-Makki Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57185/ewbe8b16

Abstract

This study investigates the design, implementation, and evaluation of a real-time Production Information System (PIS) developed for PT Datang DSSP Power Indonesia, a joint-venture corporation operating three coal-fired power plants. Increasing operational complexity in thermal power generation demands integrated monitoring solutions that enhance production efficiency, strengthen safety management, and improve decision-making processes. This research aims to develop and assess a PIS capable of delivering real-time production data while supporting centralized supervision through a set of interconnected technological modules. The study employs a system design approach based on operational requirements, phased technological implementation, and functional performance evaluation. The proposed PIS integrates four core components: a site-wide Closed-Circuit Television (CCTV) system, real-time production data acquisition and upload, a video conferencing platform, and secure broadband connectivity enabling reliable data transmission to the corporate headquarters. The implementation of the PIS demonstrates substantial improvements in production efficiency, safety monitoring, and resource allocation. The system enhances cross-site visibility, supports faster situational assessment, and accelerates strategic decision-making within the organization. Overall, the findings provide a valuable reference for developing integrated monitoring and information systems in the thermal power generation industry and highlight the broader applicability of such systems to other technology-driven energy sectors.
Analysis of Low-Temperature Corrosion Mechanism and Optimization of Corrosion Resistance of Air Preheater for Boiler 2 at PLTU IPP Sumsel5 Zhiliang, Wang
International Journal of Social Service and Research Vol. 5 No. 12 (2025): International Journal of Social Service and Research
Publisher : Ridwan Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/ijssr.v5i12.1346

Abstract

As an important heating surface component of the boiler, the air preheater's operating condition directly affects the unit's combustion efficiency and economy. During the operation of Boiler No. 2 at PLTU IPP Sumsel5, the cold-end modules of the air preheater were exposed to a low-temperature, high-humidity, and highly acidic flue gas environment for an extended period, leading to varying degrees of low-temperature corrosion and air leakage. This resulted in an increase in the unit's exhaust gas temperature, higher load on the induced draft fan, and limited load-bearing capacity. This paper analyzes the mechanism of low-temperature corrosion at the cold end of the air preheater and proposes a technical transformation of the cold-end tube box during unit maintenance, utilizing a new tube box structure with corrosion-resistant and wear-resistant enamel protection technology. After the transformation, the operational health and reliability of the air preheater were significantly improved, the air leakage rate was reduced, boiler efficiency increased, and the plant electricity consumption rate effectively decreased, achieving excellent technical and economic outcomes. Beyond these immediate technical benefits, the retrofit demonstrates how corrosion-resistant technologies can contribute to long-term sustainability goals, reduce environmental emissions, and provide a replicable model for other power plants facing similar challenges.
Performance Optimization and Water-Saving Retrofit of the Sealing Water Cooling System for Unit 1 Feedwater Pumps at PLTU IPP Sumsel Zhiliang, Wang
Journal of World Science Vol. 4 No. 12 (2025): Journal of World Science
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/jws.v4i12.1600

Abstract

During the operation of Unit 1 at PLTU Sumsel 5, the feedwater pump seal water cooler experienced issues such as poor cooling performance, low heat exchange efficiency, and high-water consumption, leading to elevated equipment operating temperatures, increased energy consumption, and wastage of water resources. To enhance the operational economy and reliability of the equipment, an optimization upgrade was carried out on the existing seal water cooling system during the unit's annual maintenance. The retrofit plan involved replacing the originally used demineralized water-cooling source with chilled water from the HVAC system as the working medium, while retaining the demineralized water system as a backup source. After the upgrade, the system's cooling performance improved significantly, with a reduction of approximately 65% in cooling water consumption. This achievement demonstrates dual benefits of water conservation and reduced energy consumption, while also improving operational efficiency. The project provides replicable engineering experience for optimizing auxiliary systems in similar units.
Development of Rooftop Photovoltaic Resources in Factory Building Complexes and Energy Efficiency Improvement Under Self-Generation and Self-Consumption Mode Zhiliang, Wang
Asian Journal of Social and Humanities Vol. 4 No. 3 (2025): Asian Journal of Social and Humanities
Publisher : Pelopor Publikasi Akademika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59888/xrayky08

Abstract

In response to national energy conservation and emission reduction requirements, the company has systematically implemented rooftop photovoltaic (PV) development across its three thermal power plants to promote green, low-carbon transformation. This qualitative case study analyzes operational data, project documentation, and performance indicators from these sites over two years. By utilizing rooftops of dormitories, offices, and factory buildings, a distributed PV system for self-consumption was constructed, reducing overall plant power consumption and boosting energy efficiency. Quantitative results show annual external electricity purchases dropped by 8–12%, with peak daytime self-consumption rates of 85–90%. The system yielded replicable outcomes in management, operations, and collaboration. Through comprehensive planning, standardized construction, robust maintenance, and performance evaluation, PV operational stability and profitability improved significantly, offering thermal power firms a path to "promote construction through utilization and emission reduction through construction." Beyond cost savings, distributed PV forms a cornerstone for sustainability strategies, enabling hybrid systems that balance fossil-based generation with renewables. This study provides a replicable framework for industrial-scale rooftop PV and empirical evidence for self-consumption models in thermal power settings.
Co-Authors Hongwei, Feng Muhammad Ihsan