城市路灯照明节能技术现状与发展趋势

本文分析讨论了城市路灯照明工程中的各种节能措施，包括：电容补偿式节能、调压式节能、电子镇流器节能、太阳能电子镇流器节能、市电LED路灯和太阳能LED路灯；阐述了高压钠灯电子镇流器的工作原理、电路拓扑结构、运行参数和工作性能以及在工程应用中面临的挑战；介绍了LED路灯的光源特性、LED元件连接方式、驱动控制电路与控制方式、以及当前制约LED发展的技术瓶颈；最后，从工程应用和经济成本方面对比分析了LED光源和高压钠灯光源的相关性能指标，指明在未来数年内高压钠灯仍将是城市路灯的主要光源，电子镇流器在城市照明节能改造中仍将扮演重要角色。

Energy-saving Technology and Development Trends of City Lighting

This paper analyses various energy-saving measures in city lighting engineering, which include capacitor compensation, voltage adjusting, AC electronic ballast, solar energy electronic ballast, AC LED streetlight and solar energy LED streetlight. The research has been focused on the working principle, the circuit topology, the operation parameters and performance as well as the challenges of electronic ballast for high-pressure sodium lamp （HPSL）. And the characteristics of LED lamps, connecting modes of LED components, topology structure of drive circuit and control method, and technique against the bottlenecks of the development of LED are introduced. Finally, by comparing LED light source with HPSL in aspects of engineering application and economic costs, the author comes to the conclusion that HPSL will still be the main light source of city lighting, and electronic ballast will still play an important role in energy-saving city lighting engineering in the coming years.