• Journal of IKEEE
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• v.18 no.1
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• pp.140-145
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• 2014

OPC UA(IEC62541) is a communication protocol for SG(Smart Grid) application platform. It was standardized by IEC TC57 group in December 2012. The IEC61850 has been used in Digital Substation Systems and Smart Distributed Systems. The DNP3.0 has been used for device's data collection/control in Distributed Systems. The DLMS/COSEM has been used to control metering and collect information in the Smart Metering. The top-level SG management platform needs an independent middleware to manage transparently the Power Information Technology, including the IEC61850, DNP3.0, DLMS/COSEM. In this paper, we propose the SDG(Scada Data Gateway) platform. It manages Power Information Technology based Digital Substation Systems and Smart Distributed systems, Smart Metering through OPC UA.

• Proceedings of the KIEE Conference
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• 2006.11a
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• pp.108-110
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• 2006

계량기의 시장이 독점 시장에서 자유 시장으로 천이 되면서 시장은 계량기의 상호운용능력과 계량기의 지능, 관리능력 그리고 보안등의 부가적인 기능들을 요구 하게 되었다. 이러한 시장의 요구에 맞추어 DLMS 프로토콜을 표준으로 하고 COSEM 오브젝트 모델링 기법을 사용하는 계량기 표준인 IEC 62056이 제정되었다. 본 논문에서는 IEC 62056에서 정의한 프로토콜 및 서비스에 적합한 DLMS/COSEM 계량기의 S/W 아키텍처 및 그 설계 방법을 제안한다. 계량기 S/W는 크게 MCS와 MOM으로 구성되며, MCS는 계량기의 모델링 스크립트로 COSEM 오브젝트와 계량기의 구체적인 기능을 명시하고, MOM은 MCS를 읽어 계량기를 구동 시키는 모듈로 MCS에서 선언된 기능 및 동작을 해석하여 계량기를 전기, 가스, 수도 등의 기능을 갖는 계량기로 동작시키는 역할을 한다.

• Journal of IKEEE
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• v.14 no.2
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• pp.33-40
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• 2010

OPC is open connectivity in industrial automation and the enterprise systems that support industry. OPC XML-DA provides a platform-independent on web service-based communication. This paper propose Power IT system integration platform using OPC that is to integration between DLMS protocol used in AMI system and Distribute protocol DNP3.0 throught IEC61850 using Substation Automation Protocol.

• Journal of IKEEE
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• v.14 no.2
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• pp.41-50
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• 2010

TETRA is the standard of Digital Trunked Radio System suggested by the ETSI(European Telecommunications Standards Institut ). It is adopted as Electric Power IT Wireless Backbone Network in Korea. Police station and Fire Station are using TETRA network. Currently, Power Automation Protocols are DNP3.0 in Distribution Automation System, DLMS in Auto Metering Infrastructure, IEC61850 in Substation Automation. These protocols are transmissions using CDMA or WCDMA modem. If Power Automation protocol uses TETRA networks, it can be interoperable with the systems in police or fire stations. And it has outstanding ability to handle problems in a disaster situation. So, This paper propose a gateway system of Power Automation which can transmit the power automation protocol using TETRA.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.48 no.3
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• pp.41-49
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• 2011

In this paper, we propose an open protocol to be employed between a smart meter concentrator and a metering data collection server, and also evaluate its performance. Legacy concentrators performs the connection establishment and data gathering operations with DLMS/COSEM protocol standards. However, we note that there are no standardized protocols between the concentrator and the collection server, which inevitably conduces each commercial smart metering system to have its own proprietary protocol. In order to solve this problem, we propose an open protocol - Smart Meter Concentrator Control Protocol(SMCCP) by extending the existing standard protocol(DLMS/COSEM). The SMCCP can provide the proxy mode to enable efficient transmission between the concentrator and the data collection server. It also can support the relay mode to enable a direct communication between the data collection server and each far end smart meter. We also implement an emulator system and a protocol analyzer to provide its operation. In addition, we evaluate the session holding time and the link usage ratio in both relay and proxy modes with OMNET++ simulator.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.37 no.1B
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• pp.75-85
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• 2012

In this paper, we introduce the case study on the certificate system for Auto Meter Reading protocol, Device Language Message Specification which is a common language between metering devices and protocol with compatibility and conformance to the IEC 62056 standards. KEPCO has contributed to improve interoperability between different devices of multi vendors through the DLMS standard tests and led the smart metering industry in Korea. KEPCO has AMR system and successful business model for 550 thousands of households based on 24Mbps broadband powerline communications using its infrastructure. We have plan to continue on standardization activities stratagemically by participating in IEC working groups for the purpose of occupying the core technology of Smart Gird.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06d
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• pp.491-494
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• 2008

기존의 전력량계의 원격 검침을 위한 DLMS/COSEM(Device Languag Message Specification / Companion Specification for Energy Meters) 시스템에서의 실제 송, 수신되는 데이터를 수집하여 이를 표현 및 분석 할 수 있는 프로그램을 구현하여 이로 하여금 실제 검침원에게 시스템에서의 송 수신되는 데이터의 흐름을 한 눈에 볼 수 있게 하였다. 또한 데이터의 실제 값 들을 분석하여 이틀을 가시적으로 볼 수 있어 오류 발생 시에 세부적으로 데이터를 분석하여 오류 원인을 찾아 낼 수 있다.

• KEPCO Journal on Electric Power and Energy
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• v.6 no.1
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• pp.29-33
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• 2020

Despite the same system architecture and operation principle, Advanced Metering Infrastructure (AMI) and Internet of Things (IoT) are recognized as a heterogeneous system. This is due to the different object modeling and communication protocols used in smart meters and sensors. However, data interworking between AMI and IoT is expected to be inevitable in the future. In this paper, we propose Device Language Message Specification (DLMS) to Lightweight Machine to Machine (LwM2M) conversion model. The proposed interworking model can reduce the packet size by 46.5% compared to that of the encapsulation method.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.05a
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• pp.983-986
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• 2008

SCADA 시스템과 관련된 많은 표준 프로토콜이 등장하고 있는데, 앞으로 DNP, IEC61850, DLMS 등의 프로토콜들이 공존하는 형태로 발전할 것으로 예상된다. 본 논문은 이러한 프로토콜들의 공존을 위한 범용 SCADA 게이트웨이 개발을 위해 분석한 IEC 61850의 통신기능을 소개하고 있다.

• The Journal of the Korea institute of electronic communication sciences
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• v.8 no.8
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• pp.1143-1148
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• 2013

This paper deals a watt-hour meter monitor system with applying a Power Line Communication (PLC) modem and a Data Concentrator Unit (DCU). PLC modem uses the power line, so there is no need to install dedicated wiring. This system makes it possible to monitor the amount of electricity of previous current month metering data, so it can easily apply a PC-management for the electric charges and maintenance with gathering the metering data.