Analysis and measures of influence of the common connection line on zero-sequence direction protection;
电压回路中性线对零序方向保护的影响分析和防范措施
This paper analyses a maloperation of zero-sequence direction protection on a 500 kV transmission line,finds out the reason of the maloperation in theory and verifies it with electro-magnetic transient program(EMTP) simulation.
针对一起500kV输电线路零序方向保护误动事故,理论上分析了误动的原因,并用电磁暂态程序(EMTP)进行了仿真验证。
Improvement on Pilot Zero Sequence Directional Protection to Avoid Miss Operation Due to Zero Sequence Weak-infeed and Its Simulation
纵联零序方向保护零序弱馈拒动的改进方案及其仿真
Analysis of the reason of pilot zero sequence directional protection mal-function and study of negative sequence directional element on parallel double-circuit lines
平行双回线路纵联零序方向误动原因分析及负序功率方向研究
A Novel Direction Element Based on Transformer Neutral Zero Sequence Current
基于变压器中性点零序电流的方向元件
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零序电哩向保护装置
It mainly focuses on analysis and determining method of zero sequence power direction relay.
重点介绍零序功率方向继电器的分析及判定方法。
Abstract: Zero sequence directional power protection is widely used in neutral directly grounded system.
文摘:在大电流接地系统中广泛采用着零序功率方向保护。
The Research of Fault Line Selection for Single Phase to Earth Fault Based on Zero-Sequence Transient Power Direction in Power Network with Ungrounded Neutral;
基于零序暂态功率方向的消弧线圈接地系统故障选线装置的研究
null-type yaw probe
对零式(三孔)方向测针
Research on inverse time current relay based on the absolute value of zero-sequence power
采用零序功率绝对值构成反时限零序电流保护的方案探讨
Study of Making Zero Sequence Current in Distribution Networks with Two Phases Current Transformers;
两相TA配电网零序电流构造方法研究
Automobile accessory development order based on AHP
基于AHP方法的汽车零部件发展序列
On Nevanlinna directions and Borel directions of meromorphic algebriodal function;
零级亚纯代数体函数的Nevanlinna方向与Borel方向
Automobile and motorcycle spare parts, crankshafts, connecting rods, shafts, power steering shafts.
汽机车零件–轴、杆、轴及动力方向盘轴心.
The summations of forces in this and that directions must be zero.
在这个和那个方向上的合力必定为零。
The BR Direction on the Small Functions of the Meromorphic Function of Zero Orders;
零级亚纯函数关于小函数的BR方向
On the Borel Direction of Largest Type for K-quasimeromorphic Mappings of Zero Order;
零级拟亚纯映射的最大型Borel方向
Study on Zero-sequence Distributed Parameter Live Line Measurement of Transmission Lines with Mutual Inductance
互感输电线路零序分布参数带电测量方法研究
Study and Experiment of Zero-sequence Mutual Inductance Parameter Measurement of Transmission Line;
输电线路零序互感测量方法的研究与实验