Opening a transmission line is equivalent to adding, in parallel with it, another transmission line but having the negative impedance of the same line. This is straightforward if the line is not mutually coupled with other lines in the system. Mutual coupling between parallel and adjacent lines ...
The coupling as well as the terminating impedances required for an impedance match and infinite directivity have been determined in terms of self and mutual immittance parameters, expressions for which have been determined as explicit functions of the line parameters. The method of design of a ...
The invention relates to test methods of mutual impedance and coupling capacitance of transmission lines in parallel. The test method of mutual impedance comprises the following steps that: a head end of one phase test line in a test line accesses a pilot frequency testing voltage and the end ...
Line Constants Key Features Conductor & ground wire libraries Built-in configurations: horizontal, vertical, etc. General configuration: X, Y, & Z coordinate Multi-line mutual coupling Phase & sequence impedance matrix Transposed & un-transposed lines ...
The synchronized voltages and currents at each line terminal are needed to obtain the fault location. The proposed method is formulated based on theory of transmission lines and Taylor series expansion for distributed parameter line model. The mutual coupling between all phases and the untransposition...
The design parameters are as followed: periodic pitch d = 12.4 μm, groove depth h = 12 μm, groove width a = 2.4 μm, and line width w = 6 μm. To prevent significant electromagnetic coupling Scientific Reports | ...
In this study, the post-fault synchronized phasors acquired from the local phasor measurement units (PMUs) are used to provide comprehensive fault reporting in Three terminal transmission line system (TTTL). The reporting data incorporates the classification, section identification, and localization of ...
Distance relays have poor performance on the protection of parallel transmission lines because of the mutual coupling effect. The distance relay may underreach when both lines are in-service. On the other hand the over reach problem may arise when only one line is in-service and another line ...
Transmission lines on a PCB are rarely routed in isolation, and they may be routed in parallel with common or differential driving. If we bring a second line near the first line, there is some mutual capacitance and inductance between the two lines, which will affect the current produced in...
Eq. (19) is considered as the edge when the line conditions change between finite and infinite conditions. The maximum value that the coupling factor can reach is defined by Eq. (20).(20)ζ=zgwzzs Under the short length of the OHEW and especially when the OHEW is not continuous, Eq...