단식압력시간법을 이용한 프란시스 수차의 효율시험에 관한 연구

다국어 초록 (Multilingual Abstract)

High efficiency turbines are studied to maximize energy usage in hydropower market, and existing turbines are rehabilitated to increase turbine efficiency by modernization project. Many researchers make an effort to develop precise turbine efficiency test methods, especially field efficiency test rather than laboratory test.
In these days, acoustic methods are often used because of easy usage and advanced ultrasonic technology. However, the fundamental methods of turbine efficiency test are current meter and pressure-time method. Current meter is limitatively used because of hardness and cost of installation. Pressure-time method is generally used.
In this study, the single pressure-time method, available to most hydropower plants in Korea, is compared with differential diagram method and ultrasonic flow meter method. By analyzing those results and precision of flow measurement, the single pressure-time method depending on abroad technique is performed to succeed in domestically. To verify the accuracy of single pressure-time method, C-Dam and M-Dam hydropower plants are tested.
In the result of C-Dam hydropower, the turbine efficiency by single pressure-time method is similar to that by differential diagram method. In the case of M-Dam hydropower, the turbine efficiency by single pressure-time method is similar to that by ultrasonic flow meter method.
This study verify the accuracy and utility of the single pressure-time method and succeed in domestic technique of turbine efficiency test.

목차 (Table of Contents)

• 1. 서 론 1
• 1.1 연구의 필요성 1
• 1.2 연구배경 3
• 1.3 연구내용 및 목적 5
• 2. 이론적 배경 및 시험사례 분석 6
• 2.1 압력시간법 6
• 2.1.1 압력시간법의 정의 6
• 2.1.2 압력시간법의 종류 8
• 2.1.3 압력시간법 적용조건 10
• 2.1.4 측정 및 유량산출 13
• 2.2 해외제작사 시험사례 분석 16
• 2.2.1 시험결과 분석 16
• 3. 유량산출 알고리즘 개발 23
• 3.1 배경 23
• 3.2 내용 23
• 4. 결과 및 고찰 28
• 4.1 대수력발전소 수차효율 28
• 4.2 소수력발전소 수차효율 43
• 5. 결론 55
• REFERENCES 56
• ABSTRACT 58