Muhammad Zulham Kentjie | Sekolah Tinggi Teknik PLN (original) (raw)
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Thesis Chapters by Muhammad Zulham Kentjie
This book contains information obtained from authentic and highly regarded sources. Reasonable ef... more This book contains information obtained from authentic and highly regarded sources. Reasonable efforts have been made to publish reliable data and information, but the author and publisher cannot assume responsibility for the validity of all materials or the consequences of their use. The authors and publishers have attempted to trace the copyright holders of all material reproduced in this publication and apologize to copyright holders if permission to publish in this form has not been obtained. If any copyright material has not been acknowledged please write and let us know so we may rectify in any future reprint. Except as permitted under U.S. Copyright Law, no part of this book may be reprinted, reproduced, transmitted, or utilized in any form by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying, microfilming, and recording, or in any information storage or retrieval system, without written permission from the publishers.
Kontiunitas penyaluran tenaga listrik dalam sistem transmisi menjadi hal yang sangat penting dal... more Kontiunitas penyaluran tenaga listrik dalam sistem transmisi menjadi hal
yang sangat penting dalam menjaga kehandalan pasokan tenaga listrik.
Penggunaan Autoreclose dalam sistem transmisi menjadi salah satu pola dalam menjaga kehandalan sistem. Saat ini ada beberapa jaringan transmisi 150kV yang merupakan sistem transmisi hybrid, yaitu kombinasi saluran udara dan saluran kabel tegangan tinggi. Gangguan temporer pada jaringan transmisi hybrid ini akan menyebabkan padam bila skema proteksinya tidak dilengkapi dengan autoreclose. Autoreclose diatur agar bekerja ketika gangguan pada saluran udara, dan tidak bekerja (blocking) ketika gangguan pada saluaran kabel tegangan tinggi.
Papers by Muhammad Zulham Kentjie
With the rapid development of Smart Grid technology, traditional TDM/SDH communications networks ... more With the rapid development of Smart Grid technology, traditional TDM/SDH communications networks used by electric utilities face many challenges and cannot accommodate the communication and longterm evolution requirements. As TDM/SDH equipment and services are being discontinued, operators are migrating applications to packet technologies. The MPLS technology implements packet switching based on open communication standards and has been widely used by telecommunications carriers and enterprise users. The digital line differential protection demands the highest requirements for communication channels (in terms of latency, channel symmetry, jitter etc.) in the field of power system protection. The protection principle is based on the comparison of the measured line currents in all line ends (carried out by protections relays) at the same moment and on a per phase basis. Line Differential protection principle is very effective but relies 100% on communication network reliability. Therefore a reliable data exchange between the relays at all line terminals is mandatory. This paper validates the use of MPLS networks to meet the stringent requirements of digital line differential protection schemes, and reveal how an MPLS network can impact on the protection's behaviors under different conditions: asymmetric channel latency; jitters and congestion. For each test condition, key indicators of behaviors are observed and recorded, including the endto-end delay, tripping time and measuring of differential current. Impairment tools are used to inject an additional and artificial delay in one-way path or both ways and to introduce artificial jitters. Through theoretical analysis and practical tests carried out with different telecom providers, the factors influencing on performance of line differential protection in IP-based network environment are revealed. In this paper, architecture and elements of the selected communications network based on MPLS are introduced and the different test scenarios are described. Finally recommendations for improvements are brought up.
Indonesian Journal of Electrical Engineering and Computer Science
Continuity of power transmission is important to ensure the reliability of the electricity supply... more Continuity of power transmission is important to ensure the reliability of the electricity supply. As most system faults are temporary, the auto reclose (AR) scheme has been used extensively to minimise the outage duration, prevent widespread outages, thus increase system stability. Meanwhile, the hybrid transmission line (HTL) combining overhead line (OHL) and high voltage cable has been introduced to provide an inexpensive solution for an urban power grid. Protecting HTL with a conventional protection system would forbid the operation of the AR scheme due to difficulty to ensure whether the fault occurred on the OHL or cable section. Therefore, the circulating current protection (CCP) scheme is used in the cable section to ensure the fault location and block the AR scheme. The technology of an optical current transformer (OCT) as one of the non-conventional instrument transformers (NCIT) has emerged to provide a solution to drawbacks on the conventional current transformer (CCT). ...
Indonesian Journal of Electrical Engineering and Computer Science, 2021
Continuity of power transmission is important to ensure the reliability of the electricity supply... more Continuity of power transmission is important to ensure the reliability of the electricity supply. As most system faults are temporary, the auto reclose (AR) scheme has been used extensively to minimise the outage duration, prevent widespread outages, thus increase system stability. Meanwhile, the hybrid transmission line (HTL) combining overhead line (OHL) and high voltage cable has been introduced to provide an inexpensive solution for an urban power grid. Protecting HTL with a conventional protection system would forbid the operation of the AR scheme due to difficulty to ensure whether the fault occurred on the OHL or cable section. Therefore, the circulating current protection (CCP) scheme is used in the cable section to ensure the fault location and block the AR scheme. The technology of an optical current transformer (OCT) as one of the non-conventional instrument transformers (NCIT) has emerged to provide a solution to drawbacks on the conventional current transformer (CCT). Consequently, this paper investigated the impact of using OCT over the CCT for CCP of the HTL. The result shows that OCT could be used for CCP on much longer cable sections thus increase its reliability as the AR scheme can be used on longer or multiple cable section.
Drafts by Muhammad Zulham Kentjie
Books by Muhammad Zulham Kentjie
Digital Substation HANDBOOK
This book contains information obtained from authentic and highly regarded sources. Reasonable ef... more This book contains information obtained from authentic and highly regarded sources. Reasonable efforts have been made to publish reliable data and information, but the author and publisher cannot assume responsibility for the validity of all materials or the consequences of their use. The authors and publishers have attempted to trace the copyright holders of all material reproduced in this publication and apologize to copyright holders if permission to publish in this form has not been obtained. If any copyright material has not been acknowledged please write and let us know so we may rectify in any future reprint. Except as permitted under U.S. Copyright Law, no part of this book may be reprinted, reproduced, transmitted, or utilized in any form by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying, microfilming, and recording, or in any information storage or retrieval system, without written permission from the publishers.
Kontiunitas penyaluran tenaga listrik dalam sistem transmisi menjadi hal yang sangat penting dal... more Kontiunitas penyaluran tenaga listrik dalam sistem transmisi menjadi hal
yang sangat penting dalam menjaga kehandalan pasokan tenaga listrik.
Penggunaan Autoreclose dalam sistem transmisi menjadi salah satu pola dalam menjaga kehandalan sistem. Saat ini ada beberapa jaringan transmisi 150kV yang merupakan sistem transmisi hybrid, yaitu kombinasi saluran udara dan saluran kabel tegangan tinggi. Gangguan temporer pada jaringan transmisi hybrid ini akan menyebabkan padam bila skema proteksinya tidak dilengkapi dengan autoreclose. Autoreclose diatur agar bekerja ketika gangguan pada saluran udara, dan tidak bekerja (blocking) ketika gangguan pada saluaran kabel tegangan tinggi.
With the rapid development of Smart Grid technology, traditional TDM/SDH communications networks ... more With the rapid development of Smart Grid technology, traditional TDM/SDH communications networks used by electric utilities face many challenges and cannot accommodate the communication and longterm evolution requirements. As TDM/SDH equipment and services are being discontinued, operators are migrating applications to packet technologies. The MPLS technology implements packet switching based on open communication standards and has been widely used by telecommunications carriers and enterprise users. The digital line differential protection demands the highest requirements for communication channels (in terms of latency, channel symmetry, jitter etc.) in the field of power system protection. The protection principle is based on the comparison of the measured line currents in all line ends (carried out by protections relays) at the same moment and on a per phase basis. Line Differential protection principle is very effective but relies 100% on communication network reliability. Therefore a reliable data exchange between the relays at all line terminals is mandatory. This paper validates the use of MPLS networks to meet the stringent requirements of digital line differential protection schemes, and reveal how an MPLS network can impact on the protection's behaviors under different conditions: asymmetric channel latency; jitters and congestion. For each test condition, key indicators of behaviors are observed and recorded, including the endto-end delay, tripping time and measuring of differential current. Impairment tools are used to inject an additional and artificial delay in one-way path or both ways and to introduce artificial jitters. Through theoretical analysis and practical tests carried out with different telecom providers, the factors influencing on performance of line differential protection in IP-based network environment are revealed. In this paper, architecture and elements of the selected communications network based on MPLS are introduced and the different test scenarios are described. Finally recommendations for improvements are brought up.
Indonesian Journal of Electrical Engineering and Computer Science
Continuity of power transmission is important to ensure the reliability of the electricity supply... more Continuity of power transmission is important to ensure the reliability of the electricity supply. As most system faults are temporary, the auto reclose (AR) scheme has been used extensively to minimise the outage duration, prevent widespread outages, thus increase system stability. Meanwhile, the hybrid transmission line (HTL) combining overhead line (OHL) and high voltage cable has been introduced to provide an inexpensive solution for an urban power grid. Protecting HTL with a conventional protection system would forbid the operation of the AR scheme due to difficulty to ensure whether the fault occurred on the OHL or cable section. Therefore, the circulating current protection (CCP) scheme is used in the cable section to ensure the fault location and block the AR scheme. The technology of an optical current transformer (OCT) as one of the non-conventional instrument transformers (NCIT) has emerged to provide a solution to drawbacks on the conventional current transformer (CCT). ...
Indonesian Journal of Electrical Engineering and Computer Science, 2021
Continuity of power transmission is important to ensure the reliability of the electricity supply... more Continuity of power transmission is important to ensure the reliability of the electricity supply. As most system faults are temporary, the auto reclose (AR) scheme has been used extensively to minimise the outage duration, prevent widespread outages, thus increase system stability. Meanwhile, the hybrid transmission line (HTL) combining overhead line (OHL) and high voltage cable has been introduced to provide an inexpensive solution for an urban power grid. Protecting HTL with a conventional protection system would forbid the operation of the AR scheme due to difficulty to ensure whether the fault occurred on the OHL or cable section. Therefore, the circulating current protection (CCP) scheme is used in the cable section to ensure the fault location and block the AR scheme. The technology of an optical current transformer (OCT) as one of the non-conventional instrument transformers (NCIT) has emerged to provide a solution to drawbacks on the conventional current transformer (CCT). Consequently, this paper investigated the impact of using OCT over the CCT for CCP of the HTL. The result shows that OCT could be used for CCP on much longer cable sections thus increase its reliability as the AR scheme can be used on longer or multiple cable section.
Digital Substation HANDBOOK