变电站二次系统防雷措施分析及防护措施研究

Analysis and research of lightning protection measures for the secondary system of substation

分析了雷电侵入对变电站二次系统的危害方式,阐述了目前变电站二次防雷的不足,并利用基于雷电能量频谱的雷电流抑制装置和电子脱扣式浪涌保护器防雷装置,采用"疏"、"堵"结合的防雷策略,根据相关标准的防雷分级原则对变电站二次电源系统和信号系统进行分级防雷,并给出了各级雷电防护采用的TSPD装置的残压和通流容量参数,形成了有效的变电站二次设备雷电防护系统。

This paper analyzes the harm of lightning intruding on the secondary system of substation, expounds the shortcomings of current substation secondary lightning protection. Using the lightning current suppression device based on lightning energy spectrum and electronic tripping type surge lightning protection device, utilizing the combination of dredging and blocking lightning protection strategy, and according to the relevant standards of lightning protection classification principle, lightning protection for the secondary power system and signal system of substation are classified. This paper also gives the residual voltage of lightning protection by the TSPD device at all levels and conducting capacity parameters. An effective lightning protection system for the secondary equipment of substation is formed.