摘要
[目的]分析同塔四回架设的线路的感应电压、感应电流受相互间运行方式影响作用。[方法]通过以某实际工程为案例,对不同回路的停运方式组合、输送潮流大小等运行方式变化对感应电压、感应电流的影响进行分析。[结果]研究表明:被检测回路的电磁感应电流受同塔四回路中其它线路输送功率潮流增大而增大,且不同的回路停运方式主要通过改变运行回路与被检测回路的空间距离和电磁耦合,影响静电感应电压和电磁感应电流的大小。[结论]对同塔四回路两侧变电站的接地开关开合能力在不满足要求的情形下,提出了通过调整运行方式配合线路检修和投运的策略。
[Introduction]The induction voltage and induction current of the four circuit of the same tower are greatly influenced by mutual operation mode.[Method]According to an example of practical project,the influence of different operation modes such as shutdown combination and transmission power flow on the induced voltage and induced current was analyzed.[Result]The results show that the electromagnetic induction current of the circuit under test increases with the increase of power flow on other transmission lines,and different outage modes affect the magnitude of electrostatic induction voltage and electromagnetic induction current by changing the space distance and electromagnetic coupling between the operation loop and the detected loop.[Conclusion]When the grounding switches of substations failed to meet the requirements to control the induction voltage and induction current,a strategy of adjusting the operation mode to cooperate with the line overhaul and put into operation is introduced.
作者
袁康龙
YUAN Kanglong(China Energy Engineering Group Guangdong Electric Power Design Institute Co.,Ltd.,Guangzhou 510663,China)
出处
《南方能源建设》
2018年第A01期65-70,共6页
Southern Energy Construction
基金
中国能建广东院科技项目"同塔多回线路电气协同优化研究"(EV04051W)
关键词
运行方式
感应电压
感应电流
线路检修
operation mode
induction voltage
induction current
maintenance strategy
