• Title/Summary/Keyword: Energy Metering Device

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A Study on the Development of a Real-time Energy Metering Device for Electric Railway Vehicles (전기철도차량 운행에너지 실시간 계측을 위한 에너지 미터링 장치 개발에 관한 연구)

  • Kim, Yong Ki;Han, Moon Seob;Chun, Yoon-Young;Bae, Chang Han;Yun, Byeong Ju
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.65 no.4
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    • pp.689-694
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    • 2016
  • The objective of this study is to identify the requirements for a energy metering device and develop a real-time energy metering device for measuring energy (electricity) consumption of the electric railway vehicle during its operation. The study also evaluated the performance of the AC voltage sensor, current sensor, and data meter for the device and performed EMC tests such as surge and EFT (Burst). The performance tests showed that the percent errors of the AC voltage sensor and current sensor were ${\leq}0.1%$, and ${\leq}0.5%$ under 10~127V, and 10~250A, respectively. The result of surge and EFT (Burst) tests also indicated that the device had no malfunction in any wave (combination and ring waves) under the treat level with 2kV. The result of the field test also confirmed that the device had no malfunction in data metering.

The Device Allocation Method for Energy Efficiency in Advanced Metering Infrastructures (첨단 검침 인프라에서 에너지 효율을 위한 기기 할당 방안)

  • Jung, Sungmin
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.16 no.1
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    • pp.33-39
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    • 2020
  • A smart grid is a next-generation power grid that can improve energy efficiency by applying information and communication technology to the general power grid. The smart grid makes it possible to exchange information about electricity production and consumption between electricity providers and consumers in real-time. Advanced metering infrastructure (AMI) is the core technology of the smart grid. The AMI provides two-way communication by installing a modem in an existing digital meter and typically include smart meters, data collection units, and meter data management systems. Because the AMI requires data collection units to control multiple smart meters, it is essential to ensure network availability under heavy network loads. If the load on the work done by the data collection unit is high, it is necessary to allocation new data collection units to ensure availability and improve energy efficiency. In this paper, we discuss the allocation scheme of data collection units for the energy efficiency of the AMI.

Power Quality Monitoring with Electronic Watt-hour meter and Wireless communication module (전자식 전력량계와 무선모듈을 이용한 전력품질 표시 및 모니터링)

  • Jung, Deug-Il;Son, Young-Dae
    • 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.

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Development of monitoring system and quantitative confirmation device technology to prevent counterfeiting and falsification of meters (주유기 유량 변조방지를 위한 주유기 엔코더 신호 펄스 파형 모니터링 및 정량확인 시스템 개발)

  • Park, Kyu-Bag;Lee, Jeong-Woo;Lim, Dong-Wook;Kim, Ji-hun;Park, Jung-Rae;Ha, Seok-Jae
    • Design & Manufacturing
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    • v.16 no.1
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    • pp.55-61
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    • 2022
  • As meters become digital and smart, energy data such as electricity, gas, heat, and water can be accurately and efficiently measured with a smart meter, providing consumers with data on energy used, so that real-time demand response and energy management services can be utilized. Although it is developing from a simple metering system to a smart metering industry to create a high value-added industry fused with ICT, illegal counterfeiting of electronic meters is causing problems in intelligent crimes such as manipulation and hacking of SW. The meter not only allows forgery of the meter data through arbitrary manipulation of the SW, but also leaves a fatal error in the metering performance, so that the OIML requires the validation of the SW from the authorized institution. In order to solve this problem, a quantitative confirmation device was developed in order to eradicate the act of cheating the fuel oil quantity through encoder pulse operation and program modulation, etc. In order to prevent the act of deceiving the lubricator, a device capable of checking pulse forgery was developed, manufactured, and verified. In addition, the performance of the device was verified by conducting an experiment on the meter being used in the actual field. It is judged that the developed quantitative confirmation device can be applied to other flow meters other than lubricators, and in this case, accurate measurement can be induced.

A proposal of total energy operating system development using spatial information visualization and energy monitoring - Case study on design of total operation system in Sejong city - (건물 에너지 모니터링과 공간정보 시각화를 이용한 에너지 통합 운영시스템 개발 방안 제안 - 세종시 첫마을 공공건물을 대상으로 한 시스템 구축 사례 -)

  • Kwon, KeeJung;Lee, DongHwan;Cha, KiChun;Park, SeungHee
    • Journal of KIBIM
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    • v.4 no.1
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    • pp.8-12
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    • 2014
  • This research and project is going on the Korean government. The objective of project is that developing total energy management solution. So, this paper is going to introduce a proposal that energy total operating system development using spatial information visualization and energy monitoring. It could efficiently operate the building energy wirelessly controling cooling/heating, lighting, air-conditioning and geothermal system. The metering data is collected to total database. The data is linked to BAS gateway, which is connected the device by the standard protocol.

Development of AMI NMS (Network Management System) using SNMP for Network Monitoring of Meter Reading Devices (원격검침 설비의 네트워크 상태감시를 위한 SNMP 기반의 저압 AMI 망관리시스템 개발)

  • Kim, Young-Il;Park, So-Jeong;Kim, Young-Jun;Jung, Nam-Jun;Choi, Moon-Suk;Park, Byung-Seok
    • KEPCO Journal on Electric Power and Energy
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    • v.2 no.2
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    • pp.259-268
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    • 2016
  • KEPCO installed AMI (Advanced Metering Infrastructure) metering system for low-voltage customers from 2008. AMI metering system of KEPCO has operated 2.55 million customers and will plan to operate 22 million customers until 2020. KEPCO developed AMI NMS (Network Management System) to operate the meter reading network efficiently. NMS monitors the network status of DCUs (Data Concentration Unit) and modems. NMS provides functionalities of data collection and analysis. It collects property data of network device, network topology information, communication performance information, fault information, and etc. It analyzes collected data and controls network devices by remote access. AMI NMS collects about 370 MIBs (Mangement Information Bases) using SNMP (Simple Network Management Protocol). This paper introduces main functionalities, designed context, and implemented service screen.

Survey on Software-based Power-Metering Framework for Android Platform (안드로이드 플랫폼을 위한 소프트웨어 기반의 전력 소비 측정 프레임워크 비교)

  • Yi, Jun-min;Noh, Dong-kun
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2012.10a
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    • pp.765-768
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    • 2012
  • Recently, the supply ratio of smart devices application has become increasable, utilization of device increases constantly. At the same time, used application is more gentrified. However, using time of devices is decreased. To solve these problems, many research is studying about the hardware/software. One of them is profiling power consumption by process units. The process can be managed, based on measured energy consumption data. These means that it can efficiently use the residual energy. Application at the stage of program design can analyze and used-energy using the trace by considering the low-power can design. In this paper, we studied software-based power-metering framework for android platform. We survey each process-level power consumption measurement techniques, compare advantages and disadvantages of the technique and propose improved measures.

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Data Interworking Model Between DLMS and LwM2M Protocol (DLMS와 LwM2M 프로토콜 간 데이터 연동 모델 연구)

  • Myoung, Nogil;Park, Myunghye;Kim, Younghyun;Kang, Donghoon;Eun, Changsoo
    • 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.

Development and Experimental Evaluation of the Wireless Illumination Controller with Demand Response for the Smart Grid (스마트 그리드를 위한 무선 기반의 수요 반응 기능을 가지는 조명 제어용 장치 개발 및 실험적 평가)

  • Choi, In-Ho;Lee, Joung-Han;Hong, Seung-Ho
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.6
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    • pp.1215-1224
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    • 2011
  • Recently, a lot of research for the smart grid technology have been carried out to achieve energy efficiency for the electronic products. In order to practically apply this study, smart instruments which are capable of the AMI (Advanced Metering Infrastructure) and DR (Demand Response) function are necessary. However, it is difficult to apply the function of the smart grid to the electronic product that cannot support the smart grid. Accordingly, the efficient use of electric energy is impossible. In order to solve this problem, the electronic product has to be changed into the exclusive electronic product supporting smart grid technology or the smart controller has to be attached the outside of the device. In this study, we developed the smart controller for connecting the electric appliances to the smart grid system. It can be attached to the illumination and the smart grid-based lamp control system at home. We additionally designed the message frame and the protocol to operate the smart controller with the AMI based EMS (Energy Management Server). We developed an experimental system to practically verify functions of the smart controller which is attached to the lighting device. From the system, we showed that the electric source of the illumination can be controlled according to the load change and saved energy effectively. We also confirmed the structural benefit and the energy-efficient effect through the verification of the smart controller.

Applicability of Fuel Supply System for HCNG Engine (HCNG 엔진용 연료시스템의 적용성 평가)

  • Lee, Sungwon;Lim, Gihun;Park, Cheolwoong;Choi, Young;Kim, Changgi;Lee, Janghee
    • Transactions of the Korean Society of Automotive Engineers
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    • v.21 no.2
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    • pp.146-153
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    • 2013
  • CNG buses has contributed to improve air quality in cities. But it is difficult to meet the next emission regulations such as EURO-VI without the help of additional post-processing device. Hydorgen has higher flame speed and lower combustion temperature that make it thermal efficiency increase with leaner operation. Using hydrogen natural gas blend (HCNG) fuel is promising technology which can reduce $NO_x$ and $CO_2$ emissions for a natural gas vehicle. However, fuel flow rate of HCNG should be increased since hydrogen's energy density per volume is much smaller than natural gas. In the present study, the characteristics of fuel supply system and its applicability were evaluated in a heavy duty natural gas engine. The results showed that the potential of fuel pressure regulator and fuel metering valve had enough capacity with HCNG. Employed mixer did not affect the distribution characteristics of mixture.