• Proceedings of the KIEE Conference
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• 2000.11d
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• pp.644-646
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• 2000

According to the deregulations of governments in the world. the power industries of United State and European nations are proceeding remote meter reading and remote load control. But the core technology of multifunctional electronic meter implemented by programmable one-chip IC, which can be the right answer of all the power industy's efforts is now still under development in the advanced countries. Implementation of smallest size, lowest price single-phase meter with features which enable distribution automation such as bidirectional communication, Remote load control, remote meter reading, remote credit assigment. Prepayment billing system.

• Proceedings of the KIEE Conference
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• 2001.11c
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• pp.209-211
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• 2001

The core in developing the transformer-operated 3 phase solid state meter is to design a single chip IC, that incorporates all the necessary features required for development of the 3 phase solid state meter. Using this technology, the solid state meter can be mass produced at lower cost and higher quality. This report deals with the performance of the prototype FPGA board, which is the final step before actual IC fabrication in fabrication LAB. All the features of FPGA board, shown in this report will be included in the final ASIC IC product.

• Proceedings of the KIEE Conference
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• 1999.07b
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• pp.800-802
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• 1999

The meters for low voltage customer presently being used in Korea are all mechanical type and there is strict limitation on applying various customized tariff structure. Recently low voltage solid state meter is under development by several makers of the watt hour meter in Korea. Also, KEPCO has a plan to use the solid state meter for low voltage customer to reduce peak power. So, this paper suggests the needed function of low voltage solid state meter considering electricity tariff policy.

• Proceedings of the KIEE Conference
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• 2001.07d
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• pp.2039-2041
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• 2001

According to the deregulation of governments in the world, the power industries of United State and European nations are proceeding remote meter reading and remote load control. But the core technology of multifunctional electronic meter implemented by programmable one-chip IC, which can be the right answer of ail the power industy's efforts is now still under development in the advanced countries. Implementation of smallest size, lowest price three-phase meter with features which enable distribution automation such as bidirectional communication. The three phase metering IC and meter can be used as metering, automatic meter reading and transformer monitoring. Prepayment billing system.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.4
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• pp.93-102
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• 2018

This paper reports a Surge Protective Device (SPD) that is used to protect an automatic metering interface (AMI) power supplies of communication equipment on a low-voltage distribution system from a lightning current. The surge protective device (SPD) can be classified as one-port SPDs and two-port SPDs with decoupling elements depending on the connection type. The protection of internal systems against the lightning current may require a systematic approach consisting of coordinated SPDs. To deal with this, the definition of a lightning protection zone (LPZ) was studied and interpreted through a theoretical review. Because the lightning current resulting from a lightning surge is considerably high, there is limited protection from one SPD; therefore, coordinated cascaded MOV-based SPDs are installed to solve this problem. Regarding the power grid mentioned in this paper, a class II SPD for the low-voltage distribution system installed on the border of LPZ1 and LPZ2, which establish a protection coordination with the Arrester (LA, SA) that corresponds to the LPZO installed on the MOF stage connected to one system were designed to protect various communication (control) equipment, including the automatic meter reading system inside the branch-type electric supply panel of a building, not the incoming side of one system. In addition, performance-related tests were done by a comparison with the existing method through testing, and the optimal design was achieved for the 1-port SPD that uses a series connection and can bleed load current without any decoupling element.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.601-604
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• 2012

Recently, there have been many attempts to monitor the equipment's condition or the input devices in sensors remotely by using cable and wireless communications. Also, the research and development on this matter has been actively carried on. In this paper, we developed the monitoring system which will eliminate the errors of manual reading by humans and therefore will secure reliability between tenants and the building management office. Through the system, the private telecommunication network can be connected between the building management office and the households. This enables the control office to remotely read the electric meter and exact energy consumption of each household even when the tenants are absent.

• Proceedings of the KIEE Conference
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• 2007.10c
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• pp.172-174
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• 2007

An electronic watt-hour meter with high-precision measurement technology can provide many valuable metering data of a real-time system measurements, such as per-phase voltage, ampere, active power, reactive power, apparent power, power factor, and system frequency. Also many of accumulated metering data such as active energy, reactive energy, apparent energy, and load profile can be gettable from an electronic watt-hour meter[1]. This paper presents an approach of the small-sized AMR (Automatic Meter Reading) that provides customers with a very valuable electrical service. This AMR service transmits lots of a valuable metering data by using ZigBee communication module, so that users resided in their premises can use the information to audit a power quality and improve their electrical conditions by using the PQ monitoring device equipped with ZigBee receiver. This PQ monitoring device shows metering data on LCD and transmits to the PC through an internal network. Also, the device can keep the valuable meter data into a built-in non-volatile memory. The final goal of this paper is to better understand the power quality of electrical systems and offer the power qualify information for the convenience of all power consumers.

• Proceedings of the KIEE Conference
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• 2001.07a
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• pp.308-310
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• 2001

With the development of Computer & Communication Technology, nowadays many people are interested in remote metering, and many vendors are suggesting various remote metering solutions. KEPCO (Korea Electric Power Corporation) adopts some of these to some customers who uses a lot of electric power, also continues researching them. But, currently used electronic watt-hour meters vary in terms of communication protocol and data structure by the vendors. So we have to know each vendor's communication protocol and data structure to construct a remote metering system, or to find problems in it. But that's impossible to know each vendor's protocol and data structure because they are reluctant to tell those to outside the company. To solve these problems and to make a much more cost-effective metering system, KEPCO developed standard communication protocol between meters and PC (or metering server), and defined standard functions and data structure which can be used by everyone easily. Those developments support standard interface for every vendors' meters. And Those will be adopted by KEPCO for a part of a new metering standard for electronic watt-hour meters.

• 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 KIEE Conference
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• 2005.11b
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• pp.3-5
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• 2005

21세기의 무한 경쟁 환경에서 기업의 생존은 고객 만족에 의해 좌우된다고 해도 과언이 아니다. 한편, 고객 만족을 달성하기 위해서는 고객의 욕구가 어떻게 변화하고 있는가를 충실히 파악하여야 한다. 헌재의 고객은 제품의 기본 기능과 가격 똥의 요소뿐만 아니라, 제품의 품질, 특히 신뢰성에 매우 민감한 반응을 보이고 있으며, 각 기업은 이러한 추세를 반영하여 제품의 보증기간을 경쟁적으로 연장하고 있다. 신뢰성이란 제품이 얼마나 오랫동안 고장 없이 의도한 기능을 발휘할 수 있는가를 나타낸다. 즉, 신뢰성이란 시간적 품질을 의미하며 제품이 충분한 신뢰성을 가지고 있지 못할 경우, 과도한 클레임으로 인한 보증비용의 증가와 같은 단기적인 손해뿐만 아니라, 고객 불만족, 고객 이탈, 기업 경쟁력 상실 통으로 야기되는 장기적인 손실에 이르기까지 매우 큰 피해를 감수해야 한다. 따라서 제품의 신뢰성은 기업의 생존과 경쟁력 우위를 확보하기 위한 중요한 전략적 요소로 다루어 져야 한다. 신뢰성 활동은 크게 신뢰성 평가와 신뢰성 설계 두 가지로 나눌 수 있다. 전자는 현재 개발 또는 양산 중인 제품의 신뢰성 수준이 어느 정토인가를 파악하자 하는 활동이며, 후자는 제품에 신뢰성을 높이기 위한 일련의 활동을 포함한다. 한편, 신뢰성 평가는 모든 신뢰성 업무에서 앞서 선행적으로 이루어 져야 하는 기초적 활동이며, 본 과제에서는 자사의 전자식 전력량계(LSEW12)와 디지털 보호계전기(GIPAM2200)를 대상으로 신뢰성 평가에 관한 연구를 수행하였다.