摘要
电涌保护器被广泛应用于低压交流电源系统,用来抑制雷电暂态过电压从而有效保护低压电子设备。但因传统电涌保护器中元器件数量较多、体积较大等缺点,在分析传统电涌保护器的同时对其进行简化,进而提出了一种简化的电路模型。采用电磁暂态仿真软件PSCAD/EMTDC分别对传统的和简化的电涌保护器电路进行雷电暂态响应仿真分析,并对比其仿真结果。此外,组装了两种电涌保护器并实测了保护器的雷电暂态响应。试验和仿真结果表明简化电路也具有较好的保护性能,可取代传统的电涌保护器。
Surge protective devices（SPDs） are applied in the low voltage AC power system to limit lightning transient overvoltage so as to protect the low-voltage electronic devices. However, the traditional SPD has some shortcomings such as too many components, bigger size etc. Aiming to overcome these shortcomings, a simplified circuit is proposed when the circuit of traditional SPD is analyzed. Simulation analysis of the lightning transient response of traditional and simplified circuits is performed with PSCAD/EMTDC. Furthermore, the simulation results of two circuits are compared.Besides, two kinds of SPDs are assembled and the lightning impulse experiments are made to obtain transient responses. The simulation and experiment results show that the simplified circuit also has good protective performance and can replace the traditional SPD.
作者
刘惠萍
张小青
王鑫
LIU Huiping ZHANG Xiaoqing WANG Xin(School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)
出处
《电瓷避雷器》
CAS
北大核心
2016年第5期79-83,共5页
Insulators and Surge Arresters
