摘要
为了能够检测电气化铁路供电系统中的谐波、无功和负序电流,在有限维线性空间理论的基础上,分析比较了FBD法和三相电路瞬时无功功率理论,指出三相电路瞬时无功功率理论可以看作FBD法的特例。提出了一种基于FBD法的检测方法,并将该方法应用于牵引变电所新型电能质量调节器。分析得出:检测方法中低通滤波器的性能直接影响到包含电能质量调节器的牵引供电系统的稳态、动态性能。滤波器的延时越大,稳态时检测精度越高,动态响应越慢。仿真结果验证了检测方法与系统特性分析的正确性。
The reactive power, harmonics and negativesequence currents in electrical railway power systems can be measured using the FBDmethod. Analysis of FBDmethod and threephase instantaneous reactive power theory, using the theory of finite dimensional linear space showed that the threephase instantaneous reactive power theory can be regarded as a special case of the FBD method. A measurement method based on the FBD method was then used to develop a traction substation power quality compensator. The lowpass filter in the measurement method influences the steady and dynamic characteristics of the traction power system containing the power quality compensator. When the lowpass filter has longer delay times, the method is more accurate at steady state but the dynamic system response is slower. The measurement method and system performance have been proved using simulation results.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第3期361-365,共5页
Journal of Tsinghua University(Science and Technology)
关键词
FBD法
谐波
负序电流
电气化铁道
FBD-method
harmonic
negative-sequence currents
electrical railway
