Research On The Electric Efficiency Evaluation Of Subeay Lighting System

The lighting system is an important component to maintain routine operation, because of its long operation time and huge power consumption, the subway lighting energy-saving has great significant. But the energy-saving standards of determination on subway lighting are often vague and difficult to measure. It's detrimental for energy conservation evolvement in an economical and efficient mode. With the expansion of subway and the acceleration of investment, our country is beginning to pay close attention to scientific level of the subway lighting energy-saving investment decision and its benefit level. It urgently needs carrying on evaluation and study for the subway lighting construction projects.In order to improve energy saving effect of the future metro projects and the metro project which has been running according to summarize the experience and offer the improving suggestions.On the basis of numerous domestic and foreign research and technologies, having the design and construction experience in mind, the research about the electric efficiency evaluation of subway lighting system is proposed. The efficiency evaluation system is established and the evaluation test methods are raised. The focal point of study is for evaluation contents of index system and integrated evaluation methods. Drawing a accurate weight data helps with confirming the direction of metro lighting energy-saving point. The main research results and innovation of the thesis are as follows:On the perspective of electric efficiency, the systematic conception is utilized to analyze the situation of subway lighting system on the new perspective of electric efficiency. By analysis 3 aspects:the design process, the electric power consumption and the lighting effects, which including 8 secondary parameters,24 third parameters and 5 fourth parameters, the set of parameters' hierarchical framework and relationship are clearly defined. It is a multiple perspectives reflection of all aspects relating to electrical efficiency and presentation comprehensive information about the electric efficiency evaluation of subway lighting system.By analyzing the characteristics of subway lighting project and associated parameters, several evaluation methods is selected optimally to establish the electric efficiency evaluation of subway lighting system with comprehensive comparative analysis of various weights method. First, the Delphi method is used to filter parameters and the BP (Back Propagation) neutral network method is adopt for confirmation the index set result. The intent is not only for absorbing the muti-variate of experience and knowledge but for reducing the weight of artificial which is effected by subjective and uncertainty characteristic,35 indicators are identified eventually. When indicator set is defined, a framework of power efficiency lighting systems evaluation with the target layer, the rule layer, the index layer and the subject layer are constructed. The AHP (Analytic Hierarchy Process) and the qusai-entropy method are selected as the index weight analysis tools. The indicators weights are established by comprehensive integrated way on the subjective and objective aspects. The weight results shows the extent connection between each index and electric efficiency, the focus direction of energy saving in subway lighting system is confirmed.Three model-based test evaluation methods are proposed with the conclusion that indicators are defined which having great proportion on electric efficiency. The auxiliary lighting software-DIALux is used for establish a subway lighting mold on the model-based testing method. The data is extracted to make technical analysis in order to compare the advantages and disadvantages in different energy-saving programs. In the data-based testing method, the study main line is the same indicators in three program processes and the similarity metro-scale mode. Three test evaluation table is set for comparison data. The whole evaluation of the subway lighting system efficiency is given by the evaluation-based method with fuzzy method processing exports statistics.In order to save energy, it combines two parts of the test evaluation and the evaluation system with constantly amendment lighting program. And the evaluation system of subway station lighting system reflects the expert opinion tendency about energy-saving and provides the scientific basis reliable data for energy-saving policy direction.