摘要
根据特高压输电线路结构和运行特点,通过建立750kV特高压输电线路的RTDS实时数据仿真系统数学模型进行仿真,结合仿真数据介绍750kV输电系统的电气特征,着重分析了线路的电容电流、谐波分量、非周期分量等对分相电流差动保护的影响,并针对问题提出具体的对策,仿真测试结果表明,该文提出的差动保护方案解决了750kV特高压输电线路系统对差动保护影响,同时简要介绍了光纤差动保护的整体配置及实现方案。
According to the structure of UHV transmission line and operation characteristics, the RTDS model of 750 kV UHV transmission line is constructed and simulated. Based on the simulation, the electrical feature of 750 kV transmission system and the influence on phase segregated current different protection of the capacitance current, harmonic component, aperiodic component are analyzed and emphasized respectively. The solutions are introduced. RTDS simulation shows that diferential protection can meet the especial demands of 750 kV UHV transmission line system. Overall configuration and implementation scheme of fiber optical current differ- ent protection are proposed.
出处
《继电器》
CSCD
北大核心
2005年第19期5-9,共5页
Relay
