비상발전기용 디젤엔진을 위한 진단기술에 관한 연구

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工工工

工學學學碩學碩碩碩士士士士學學學學位位位論位論論論文文文文

비상발전기용 비상발전기용 비상발전기용

비상발전기용 디젤엔진을 디젤엔진을 디젤엔진을 디젤엔진을 위한 위한 위한 위한 진단기술에

진단기술에 진단기술에

진단기술에 관한 관한 관한 관한 연구 연구 연구 연구

A

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指指指

指導導導導敎敎敎敎授授授授

柳吉洙

2005 2005 2005

2005年年年 7年 777月月月月韓韓

韓韓國國國國海海海洋海洋洋洋大大大大學學學學校校校校大大大大學學學院學院院院 컴

컴 컴

컴 퓨 퓨 퓨 터 퓨 터 터 터 工工工工學學學學科科科科朴鍾一

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本本

本本論論論文論文文文 을 을 을 朴朴朴鍾朴鍾鍾鍾一一一一 의 의 의 工工工工學學學碩學碩碩碩士士士士學學學學位位位論位論論論文文文文 으 으 으로 로 로 認認認准認准准准 함 함 함

委委

委委員員員長員長長長工工工工學學學博學博博博士士士士辛辛辛辛沃沃沃沃根根根根印印印印

委委

委委員員員員工工工工學學學博學博博博士士士士金金金金載載載載熏熏熏熏印印印印

委委

委委員員員員工工工工學學學博學博博博士士士士柳柳柳柳吉吉吉吉洙洙洙洙印印印印

2005 2005 2005

2005 年年年年 7 7 7 月 7

月月月

韓韓韓

韓

國國國國

海海海海洋洋洋洋

大大大大

學學學學

校校校校大大大大

學學學學院院院院

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목 목 목 목 차 차 차 차

AAAbbbssstttrrraaacccttt·····························································································································ⅳ

제제제 111장장장 서서서 론론론 ··············································································································1

제제제 222장장장 전전전문문문가가가시시시스스스템템템을을을 이이이용용용한한한 디디디젤젤젤엔엔엔진진진 진진진단단단 시시시스스스템템템 구구구축축축 ···························4

2.1일반적인 전문가시스템의 구조 ············································································5

2.2진단대상 선정 ··········································································································6

2.3진단대상에 대한 진단지식 추출 ··········································································7

2.4진단지식 표현 ··········································································································8

제제제 333장장장 JJJRRRuuullleeesss를를를 이이이용용용한한한 지지지식식식베베베이이이스스스 구구구축축축 ···························································16

3.1전문가시스템 개발도구 JRules··········································································16

3.2디젤엔진의 지식베이스 구축 ··············································································17

제제제 444장장장 시시시스스스템템템 구구구현현현 ····································································································24

4.1시스템 전체 구성 및 기능 ··················································································24

4.2In-Touch기반의 계측모듈 및 감시모듈 ·························································26

4.2.1감시모듈의 GUI화면 구성 ······································································28

4.3고장진단 모듈 ········································································································31

4.4예측진단 모듈 ········································································································32

4.5진단모듈과 감시 모듈간의 인터페이스 ····························································33

4.6시운전 데이터 분석 ······························································································34

제제제 555장장장 실실실 행행행 ················································································································36

제제제 666장장장 결결결 론론론 ··············································································································41

참참참고고고 문문문헌헌헌 ····························································································································42

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그그그림림림 목목목차차차

그림 2.1진단시스템 구축 단계 ························································································4

그림 2.2일반적인 전문가시스템 구조 ············································································6

그림 2.3디젤엔진 계통도 ································································································7

그림 2.4전문가에 의하여 추출된 저온 냉각수 계통의 진단지식 ····························8

그림 2.5계통별 증상 및 상태 간의 관계 ····································································11

그림 2.6각 계통별 기기간의 객체지향 표기법에 의한 관계 ··································12

그림 2.7진단데이터의 증상 추정 알고리즘 ······························································14

그림 3.1JRules의 역할 및 기능 ····················································································17

그림 3.2지식베이스 구축 단계 ······················································································18

그림 3.3디플로이어 설정 ······························································································19

그림 3.4BOM에서 클래스 추가 ····················································································20

그림 3.5TRL로 작성한 룰 화면 ····················································································21

그림 3.6초기동작 설정화면 ····························································································22

그림 3.7규칙흐름도 작성화면 ······················································································22

그림 3.8룰 엔진 생성화면 ····························································································23

그림 4.1시스템 구성도 ··································································································26

그림 4.2In-Touch에서의 태그 설정화면 ···································································27

그림 4.3배기가스 계통의 GUI화면 ···········································································30

그림 4.4고장 진단의 흐름도 ························································································31

그림 4.5예측 진단의 흐름도 ························································································32

그림 4.6진단모듈과 감시모듈간의 인터페이스 ······················································34

그림 5.1고장진단 실행 흐름도 ····················································································37

그림 5.2알람값으로 변경하기 위한 화면 ··································································38

그림 5.3상태감시 및 고장진단 결과 ··········································································38

그림 5.4예측진단 실행 흐름도 ····················································································39

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표 표 표 목목목차차차

표 2.1디젤엔진의 6계통 클래스화 ··············································································10 표 4.1 INSPECT 데이터베이스 ··················································································35

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A A A S S St t tu u ud d dy y yo o on n nD D Di i i a a ag g gn n no o os s si i i s s sT T Te e ec c ch h hn n no o ol l l o o og g gy y yo o of f fD D Di i i e e es s se e el l lE E En n ng g gi i i n n ne e e f f fo o or r rE E Em m me e er r rg g ge e en n nc c cy y yG G Ge e en n ne e er r ra a at t to o or r r

Jong-Il Park

Department of Computer Engineering, Graduate School, Korea Maritime University, Busan, Korea

Abstract AbstractAbstract Abstract

In this dissertation,we describe an implementation ofa diagnosis expertsystem foremergencydieselelectricgeneratorsinnuclearplant.

To constructthe diagnosis expertsystem,the classification and the analysisoncausalrelationshipindiagnosisdomainisconductedinthe firstplace.Based on the knowledge on the causalrelationship ofa human expert in the domain,knowledge base is constructed using JRules which is an object-oriented and rue-based expert system developmenttool.

Thesystem consistsofadiagnosismodule,ameasuringmoduleand a monitoring module. The diagnosis module is composed of a fault-diagnosissubmodulewhichisactivatedbyalarm occurrencesand an early-diagnosis submodule which analyses measured data in a periodicalmanner.Themeasuring modulemeasuresdatanecessaryfor diagnosis from the diesel engine. Finally, the monitoring module

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providesgraphicuserinterface.Inthisstudy,themeasuring moduleis simulated by using dataofatrialrun obtained from DMDS,and the monitoring module is implemented by making use of a SCADA system,In-Touch.

Totesttheoperation ofthewholesystem,asetofsimulated data isfedintothemeasuring module.Thecorrectoperationofthesystem couldbeconfirmedbyobserving induceddiagnosisresultsthroughthe monitoringmodule.