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介绍了直流输电交流滤波器保护配置,并对电阻电抗过负荷保护进行了分析。电阻电抗元件在交流滤波器投入运行中会有谐波电流流过,产生发热现象。电阻、电抗过负荷保护是为了防止电阻、电抗过热超过电阻、电抗元件承受能力而设置的保护。本文分析了直流输电工程上电阻电抗过负荷保护的几种实现方法,对现场直流工程有一定的指导意义。
The protection configuration of AC filter in DC transmission is introduced, and the protection against overload in reactance is analyzed. Resistive reactance components in the AC filter put into operation there will be harmonic current flow, resulting in fever. Resistance, reactance Overload protection is to prevent the resistance, reactance overheating over resistance, reactance element withstand the ability to set the protection. This paper analyzes several methods to realize the protection of overcurrent and overcurrent in the HVDC transmission project, which is of guiding significance to the on-site DC project.