• Title/Summary/Keyword: Automatic Distribution System

Search Result 355, Processing Time 0.027 seconds

A Study on the Reliability Evaluation in Regional Underground Distribution System (지역별 지중 배전계통 공급방식의 공급신뢰도 평가 기법)

  • Choi, Sang-Bong;Jeong, Seong-Hwan;Kim, Dae-Kyeong
    • Proceedings of the KIEE Conference
    • /
    • 2001.05a
    • /
    • pp.155-158
    • /
    • 2001
  • The objective of this study is to evaluate properly reliability of underground distribution system taking into account domestic circumstance. Interruption time and number of interruption customer by distribution system based on actual condition in domestic utility are considered as important index to estimate reliability of underground distribution system. This paper presents evaluation results regarding the reliability of an underground distribution system using a model system as new urban area, evaluation results which is established whether automatic system is introduced or not are shown in detail.

  • PDF

A Study on Computer Application Program to an Efficient Supervisory Control of the Power Distribution System (효율적인 배전관리를 위한 컴퓨터 응용 프로그램 연구)

  • Lee, B.C.;Seo, Y.R.;Lee, J.H.;Chung, C.H.
    • Proceedings of the KIEE Conference
    • /
    • 1993.07a
    • /
    • pp.96-98
    • /
    • 1993
  • In accordance with increase of electrical power demanded, more efficient supervisory control of distribution system is required. This study contains development of MMI(man-machine-interface) system with GUI(graphic-user-interface), for the automatic power distribution system. The main function of MMI system are to edit network of power distribution, to view network, to warnning a breakdown and to management of data base for network. The GUI function of MMI system enables more efficient management of power distribution system.

  • PDF

Analysis of Distribution Line Sectionalizing Effects for The Probable Distribution System Configuration (적정 배전계통 구성을 위한 선로분할 효과 분석)

  • Kim, J.H.;Ha, B.N.;Nam, K.Y.;Lee, J.K.
    • Proceedings of the KIEE Conference
    • /
    • 1993.07a
    • /
    • pp.86-89
    • /
    • 1993
  • This paper contains the various effect of distribution feeder sectionalizing by distribution automation. The effect by automatic sectionalizing switch and the effect by manual switch are analyzed and shown according to the radial feeder and the loop feeder respectively. Based on the reliability analysis, the reference for the feeder division and sectionalization is recommended. Also, the necessary number of manual switch where the automatic switch is installed is recommended through the reliability analysis.

  • PDF

A Study on 3Dimensional Automatic Boundaries Detection on Medical Images or Radiation Therapy Planning (방사선 치료 계획 장치를 위한 의료 영상의 3차원적 자동 경계선 검출에 관한 연구)

  • Choi, Eun-Jin;Suh, Doug-Young
    • Proceedings of the KOSOMBE Conference
    • /
    • v.1997 no.11
    • /
    • pp.172-175
    • /
    • 1997
  • Outline contour is detected firstly to simulate dose distribution in radiation therapy planning system. In this paper, we developed automatic contour detection system using temporal and spatial relationships of image sequences. The low level image analysis involves the use of directional gradient edge operators and Laplacian operator. The High level portion of algorithm uses a knowledge-based strategy that incorporates fuzzy resoning method.

  • PDF

Optimum Design of Air Nozzle System for Automatic Car Wash Machine using CFD and DOE (CFD 및 DOE를 활용한 자동세차기 노즐시스템의 최적설계)

  • Jung, Uk-Hee;Choi, Young-Seok;Kwon, Oh-Myoung;Lee, Kyoung-Yong
    • The KSFM Journal of Fluid Machinery
    • /
    • v.10 no.5
    • /
    • pp.34-40
    • /
    • 2007
  • An optimization approach is investigated for the design of new nozzle system in a automatic car wash machine. Three-dimensional computational fluid dynamics and design of experiment methods have been employed to know the mutual interaction between the nozzle shape in the automatic car wash machine and the airflow velocity distribution on the vehicle surface. The performances of air nozzle system were defined as the velocity magnitude and the uniformity of the velocity on the surface of the car. Predicted jet velocity distributions for the optimized geometry were compared with experimental data and the comparisons showed generally good agreements. Also, the performance of the dryer was improved with the optimized results.

A Study on Pump Down Operation Performance of Refrigerator (냉동기 펌프다운 운전성능에 관한 연구)

  • Kim, Chul-Soo;Chung, Han-Shik;Jeong, Hyo-Min
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
    • /
    • v.18 no.12
    • /
    • pp.964-970
    • /
    • 2006
  • Vapor compression refrigerators have much critical variables such as the controls of temperature and pressure switches, control durations and operating hours of electronic valves. This study compares and analyzes the data which is obtained from system controlling of the evaporation temperatures which are generally used in automatic pump down operating systems. Through this study, the automatic evaporation control operation system will be more ideal for the system to keep the proper temperature distribution depending on the purpose of evaporation side. The automatic pump down control operation is more appropriate for the system to aim at the effective use of evaporation side without using the temperature difference. And this test will be proved that the changes at the low pressure side didn't have significant impacts on the high pressure side.

Typical Daily Load Profile Generation using Load Profile of Automatic Meter Reading Customer (자동검침 고객의 부하패턴을 이용한 일일 대표 부하패턴 생성)

  • Kim, Young-Il;Shin, Jin-Ho;Yi, Bong-Jae;Yang, Il-Kwon
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.57 no.9
    • /
    • pp.1516-1521
    • /
    • 2008
  • Recently, distribution load analysis using AMR (Automatic Meter Reading) data is researched in electric utilities. Load analysis method based on AMR system generates the typical load profile using load data of AMR customers, estimates the load profile of non-AMR customers, and analyzes the peak load and load profile of the distribution circuits and sectors per every 15 minutes/hour/day/week/month. Typical load profile is generated by the algorithm calculating the average amount of power consumption of each groups having similar load patterns. Traditional customer clustering mechanism uses only contract type code as a key. This mechanism has low accuracy because many customers having same contract code have different load patterns. In this research, We propose a customer clustring mechanism using k-means algorithm with contract type code and AMR data.

Design and Implementation of an Automatic Update System for Website Maintenance (웹사이트 유지보수를 위한 자동 업데이트 시스템의 설계 및 구현)

  • Hang, DaeHyeon;Yoo, JaeSoo
    • The Journal of the Korea Contents Association
    • /
    • v.21 no.5
    • /
    • pp.129-138
    • /
    • 2021
  • Today we are getting a lot of information and various activities on our website through the internet. These websites are maintained by individuals or by website specialists. The basic method is to change the files that make up the running website. Changing the entire file in this process takes a long time and changes the files that do not need to be changed, so the efficiency is greatly reduced. When only the files that need to be changed are changed, it takes a lot of effort as a person must manually search each path to check the files and change the files one by one. To solve this problem, automatic distribution systems were developed. Additional resources and learning are required, resulting in additional cost, time and labor. Therefore, in this paper, we propose an automatic update system to minimize resource consumption by using the resources and technologies of the existing website. The proposed system does not require learning new skills. This aims to improve reliability and reduce time compared to human work.

System Development for Automatic Tool Wear Measurement (자종공무마모계측시스템개발)

  • Kim, Y.I.
    • Journal of the Korean Society for Precision Engineering
    • /
    • v.11 no.6
    • /
    • pp.185-199
    • /
    • 1994
  • This study has been performed to present a new automatic tool wear measurement by digital image processing. The purpose of this paper is to develop an automatic tool wear measuring system based on the image processing which can be applied to the quasi-real time measurement of the characteristics of insert tip in turning. Tool wear monitoring is one of the key-problems, for the development of control systems of modern unmanned factory which are not completely solved now. In oredr words at present complete qualitative and quantitative information on tool wear morphology is required, at least on the following aspects : flank wear, its dimensions and distribution on the maximum and mean values on VB pqrqmeter in the various zones of the wearland. crater wear, its main dimensions and values of KT parameters. This research has been performed to this technique made possible by designing a proper lighting system to the worn tool with following features : The flank wear is measured by observing the active cutting part from a proper direction and by lighting the wearland by a diffuser optic system. The crater wear is visualized by lighting the tool by a He-Ne gas laser system developed in this study. By means of this system it is research to evaluate classical parameters of tool wear and to have complete information about tool wear morphology.

  • PDF

Design Classification and Development of Pattern Searching Algorithm Based on Pattern Design Elements - With focus on Automatic Pattern Design System for Baseball Uniforms Manufactured under Custom-MTM System - (패턴설계요소기반의 디자인 분류 및 패턴탐색 알고리즘개발 - 맞춤양산형 야구복 자동패턴 설계시스템을 위한 -)

  • Kang, In-Ae;Choi, Kueng-Mi;Jun, Jung-Ill
    • Fashion & Textile Research Journal
    • /
    • v.13 no.5
    • /
    • pp.734-742
    • /
    • 2011
  • This study has been undertaken as a basic research for automatic pattern design for baseball uniforms manufactured under custom-MTM system, propose building up of a system whereby various partial patterns are combined under an automatic design system and develop a multi-combination type pattern searching algorithm which allows development of a various designs. As a result of this, type classification based on pattern design elements includes side, open, collar, facing and panel type. Design have been divided into coarse classification ranging from level 1 to 7 according to pattern design elements, based on a design distribution chart. Out of 7 such levels, 3 major types determining design which are, more specifically, level 1 sleeve type, level 2 open type and level 3 collar type, have been taken and combined to determine a total of 12 types to be used for design classification codes. Respective name of style and patterns have been coded using alphabet and numerals. Totally, pattern searching algorithm of multi-combination type has been developed whereby combination of patterns belonging to a specific style can be retrieved automatically once that style name is designated on the automatic pattern design system.