실내외 통합형 태양광가로등 시험장치의 설계 및 성능평가에 관한 연구 = A study on the Design and Performance Evaluation of Integrated Indoor-Outdoor Testing System for Solar Street Lights

다국어 초록 (Multilingual Abstract)

This study presents the design and performance evaluation of an integrated test device capable of simultaneously testing the power generation and lighting conditions of solar streetlights in both indoor and outdoor environments. Because the performance of existing solar streetlights can only be evaluated after installation, it has been difficult to systematically verify power generation efficiency, charge/discharge characteristics, and lighting duration in response to environmental changes. To address this issue, this study integrated an indoor and outdoor test unit into a single system. Data from each device was collected and analyzed in real time via an industrial control system (PC-based control, EtherCAT communication).

The indoor test device artificially reproduced the power generation status of a solar panel using a variable DC power supply and precisely measured voltage and current changes in response to temperature and illumination. The outdoor test device, on the other hand, measured power generation efficiency using actual sunlight.
The experimental results showed a correlation coefficient of over 0.96 between the data measured by the two devices, indicating that indoor testing alone can closely replicate outdoor conditions. Furthermore, the battery charging efficiency was evaluated at an average of 91.2[%], and the lighting efficiency was 87.5[%], verifying the validity of the equipment design and the reliability of repeated testing.

This study presents a testing infrastructure that enables prediction of the service life and maintenance cycle of solar streetlights from the design stage, suggesting their potential for expansion into various renewable energy applications.

목차 (Table of Contents)

• 제 1 장 서론 1
• 제 2 장 이론적 고찰 4
• 2.1 태양광 발전 시스템의 원리 4
• 2.2 기존 태양광가로등 시험기술의 한계 8
• 2.3 태양광 시험평가 기술의 발전 방향 10
• 2.4 본 연구의 차별성 11
• 제 3 장 시스템 설계 및 구성 14
• 3.1 시스템의 개요 14
• 3.2 시스템의 설계 17
• 3.3 통신 및 데이터 취득 방식 36
• 3.4 시스템 제어 로직 41
• 3.5 안전 및 신뢰성 설계 44
• 제 4 장 실험 방법 46
• 4.1 실험 목적 46
• 4.2 실험 절차 47
• 제 5 장 실험 결과 및 분석 51
• 5.1 실험 개요 51
• 5.2 일사량과 발전전력의 관계 51
• 5.3 온도 변화에 따른 발전효율 분석 53
• 5.4 배터리 충전특성 및 효율 54
• 5.5 조명부 소비전력 및 밝기 특성 56
• 5.6 실내·실외 데이터 상관 분석 58
• 5.7 종합 평가 59
• 제 6 장 결론 및 고찰 60
• 참고문헌 62