Development of z-transform electromagnetic transient analysis methods for multinode power networks

Humpage, W.D.; Wong, K.P.; Nguyên, Thái Thành

doi:10.1049/ip-c.1980.0059

Cited by 6 publications

(7 citation statements)

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“…2. All electromagnetic transient analysis requires this form of modelling and is based on earlier z-plane developments [8,9]. It appears generally to be accepted now that z-plane methods can lead to the most powerful electromagnetic transient-analysis procedures so far developed.…”

Section: Computer Simulation and Analysismentioning

confidence: 99%

“…Previous papers [8][9][10][11][12] have reported developments in modelling and computational methods which can fulfil the particular requirements of analysis and evaluation related to the system of Fig. 2.…”

Section: Computer Simulation and Analysismentioning

confidence: 99%

“…Sustained or lightly damped subharmonic modes represent limits to safe operating conditions. Based on z-plane electromagnetic transient analysis [8,9] and very detailed representations for saturated reactors [12], evaluation methods have been developed to allow subharmonic stability to be investigated in detail.…”

Section: Capacitor Switchingmentioning

confidence: 99%

“…Over a period of years, modelling methods and analysis formulations [8][9][10][11][12] have been developed at the University of Western Australia, together with practical programming packages that implement them and software-engineering procedures for program development in this field. Most of the advances that have been made are of general application.…”

Section: Introductionmentioning

confidence: 99%

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Measurements on long-distance transmission interconnection with saturated-reactor compensators. Correlation with computer simulation solutions

Stewart¹,

Humpage

Choi³

et al. 1987

IEE Proc. C Gener. Transm. Distrib. UK

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Following an initial feasibility investigation and then detailed planning and design studies, a 650 km transmission interconnection in Western Australia came into service in the latter part of 1984. Since that time, there has been a rapid increase in load demand, and planning for the first reinforcement of the interconnection has now been completed. In view of the extended transmission distance involved, the crucial dependence on shunt compensation, and further loadgrowth projections, an extensive series of direct measurements has been undertaken for the purposes of examining as closely as possible the response of the system for a range of operating conditions. Measurements in the steady state include those of operating unbalance, voltage profiles, and harmonic distributions. Measurements related to transient modes include those of compensator energisation, shunt-capacitor switching, and controlled short-circuit faults. The paper seeks to report the main findings from these measurements and it includes selected test recordings from them. In one aspect, the tests make possible detailed assessments of the closeness with which computer-simulation methods can reproduce system operating conditions. To that end, comparisons are made in the paper between the results of live-system tests and those from computer simulation.

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Section: Computer Simulation and Analysismentioning

confidence: 99%

Section: Computer Simulation and Analysismentioning

confidence: 99%

Section: Capacitor Switchingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Measurements on long-distance transmission interconnection with saturated-reactor compensators. Correlation with computer simulation solutions

Stewart¹,

Humpage

Choi³

et al. 1987

IEE Proc. C Gener. Transm. Distrib. UK

Self Cite

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“…Mariscotti [5] has also applied MTL theory to railway traction system for finding the distribution of the traction return current in ac and dc electric railway systems and carried out sensitivity analysis of rail current and rail to rail voltage with respect to parameters of interest. Though not much work is done in the digital modeling of railway traction system, Humpage [6][7][8][9] is the pioneer in using the z-transformation in power systems. He along with Wong and Nugyen has applied this technique for analysis of the transient in overhead lines and cables.…”

Section: Introductionmentioning

confidence: 99%

Digital Model of Railway Electric Traction Lines

Garg

Mahajan

Kumar³

2016

J. Inst. Eng. India Ser. B

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The characteristic impedance and propagation constant define the behavior of signal propagation over the transmission lines. The digital model for railway traction lines which includes railway tracks is developed, using curve fitting technique in MATLAB. The sensitivity of this model has been computed with respect to frequency. The digital sensitivity values are compared with the values of analog sensitivity. The developed model is useful for digital protection, integrated operation, control and planning of the system.

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Frequency-adaptive by-pass filter for saturable reactor compensators

Nguyen

Goodridge

1991

IEEE Trans. Power Syst.

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By-pass filters in reactive-power compensators based on saturable reactors (SR's) have the crucial role of damping the subharmonic modes of response to which the combination of SR's and their slope-correcting capacitors gives rise. For the first time so far as the authors are aware, the paper proposes an adaptive form of by-pass filter. This is based on an on-line detection of the subharmonic modes which by-pass filters are to counter and a thyristor switching array by which filter parameters are related to subharmonic mode frequencies. Extensive simulation studies have confirmed the significant increases in damping which frequency-adaptive by-pass filtering can achieve in comparison with that of the fixed-parameter form of filter so far used, especially when mode frequencies approach the supply frequency.-Subharmonic modes, saturable reactor compensators, by-pass filtering, frequency-adaptive by-pass filtering, thyristor switching in by-pass circuits.

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Development of z-transform electromagnetic transient analysis methods for multinode power networks

Cited by 6 publications

References 0 publications

Measurements on long-distance transmission interconnection with saturated-reactor compensators. Correlation with computer simulation solutions

Measurements on long-distance transmission interconnection with saturated-reactor compensators. Correlation with computer simulation solutions

Digital Model of Railway Electric Traction Lines

Frequency-adaptive by-pass filter for saturable reactor compensators

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