The system of indicators of street lighting systems energy efficiency

Abstract

One of the important tasks that arise when choosing a project for the modernization of any electric power system is estimation of its energy efficiency. Criterion of energy efficiency is one of the most important for development plans of electrical systems, as well as other criterions. Evaluation of energy efficiency of street lighting systems is complex task, because it should take in account effectivity of street lighting that cannot be directly measured. This paper propose a system of indicators of street lighting systems, based on process of energy transformation and requirements of regulatory documents. Suggested indicators rate every elements of street lighting systems from electrical grid to luminaires, and can be used for estimation of energy efficiency of existing street lighting systems or selection of the most energy efficient option of electrical street lighting system modernization. Proposed indicators can be also used for determination of the most effective geometrical position of luminaire and can be used for energy efficiency optimization of street lighting systems on the design stage.