Phase-variable modelling of saturated reactor compensators with particular reference to long-distance transmission

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

doi:10.1049/ip-c.1985.0040

Cited by 3 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Real and imaginary parts of phase nodal voltages in vector x N in the network analysis formulation [3], which is now to be augmented with models for thyristor-controlled compensators, are found from the Newton-Raphson sequence…”

Section: Phase-variable Network Analysismentioning

confidence: 99%

“…Where these measures include discrete conductor transposition, a systematic basis for transposition design has been reported, and the superimposed contribution of saturated-reactor compensators has been quantified [4]. The purpose of this paper is that of extending this recent work [3,4] to thyristor-controlled forms of reactive-power compensator [5][6][7][8][9][10][11], and of developing models in this case which can provide a corresponding degree of representation in analysis to that now available for saturated reactor compensators. Modelling methods for thyristor-controlled compensators have been reported previously [8][9][10], primarily in their relationship to the contribution of compensators to network voltage control.…”

Section: Introductionmentioning

confidence: 98%

“…It is this particular aspect of the response of thyristor-controlled reactive-power compensators, together with the specific mode of compensator control related to it where phase-voltages are controlled individually, to which the present paper is devoted. For this mode of individual phase-voltage-magnitude control, modelling methods are developed in a form which may directly be included in overall phase-variable network analysis based on the Newton-Raphson solution algorithm [3]. A particular example of the application of the formulation is given where operating imbalance is especially pronounced.…”

Section: Introductionmentioning

confidence: 99%

“…The principal context of these developments [3] has been that of long-distance transmission in which the combination of asymmetries in transmission line parameter sets and the transmission distance can lead to levels of inherent operating imbalance for which countermeasures are required. Where these measures include discrete conductor transposition, a systematic basis for transposition design has been reported, and the superimposed contribution of saturated-reactor compensators has been quantified [4].…”

Section: Introductionmentioning

confidence: 99%

“…For reactive-power compensators of the saturated-reactor kind [1, 2], a recent paper [3] has developed phasevariable modelling methods in which the separate phases of compensators, together with those of the network for which they provide compensation, retain their separate identity. The principal context of these developments [3] has been that of long-distance transmission in which the combination of asymmetries in transmission line parameter sets and the transmission distance can lead to levels of inherent operating imbalance for which countermeasures are required.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Developments in phase-variable modelling for thyristor-controlled reactive-power compensators

Humpage¹,

Nguyen²

1986

IEE Proc. C Gener. Transm. Distrib. UK

Self Cite

View full text Add to dashboard Cite

Of the different control objectives of reactive-power compensators based on thyristor-controlled reactors, the advances in modelling methods and computer simulation of the paper relate specifically to the mode of voltage-magnitude control in which each phase is controlled individually. For this control objective, a comprehensive analysis formulation is developed in phase-variable notation in a form which can directly be incorporated into Newton-Raphson network analysis in which each phase retains its separate identity. The main context of the development is that of the supply from transmission networks of loads of substantial imbalance between the separate phases. The analysis and evaluation facilities to which the developments of the paper can lead, provide means by which the response of compensators with individual phase-voltage-magnitude control functions can be investigated for the conditions of pronounced imbalance in steady-state primary system operation. Following the analysis derivations and the developments in phase-variable modelling for thyristorcontrolled compensators, a representative design investigation is given in the paper in which phase-to-phase loads are supplied from a section of a 220 kV network. In this particular application, the effectiveness of individual phase-voltage-magnitude control in lowering operating imbalance is quantified. List of principal symbolsCompensator model Z s = compensator slope impedance X s = Im(Z s ) S a = complex power in phase a V a = control signal derived from primary system voltage in phase a I a = current in phase a V ab = control signal derived from the primary system 'a-fr' phase-pair voltage at the point of control l ab = control signal derived from the 'a-b 1 phase-pair current within the controlled-reactor bridge V ab = reference voltage in phase-voltage control F ab = residual function derived from phase-voltage magnitude control P ab = residual function derived from zero active power loss in voltage reference sources Kr > Qar = residual functions derived from nodal power balance relationships a, b = real and imaginary parts of nodal voltages Newton-Raphson analysis x N

show abstract

Section: Phase-variable Network Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Developments in phase-variable modelling for thyristor-controlled reactive-power compensators

Humpage¹,

Nguyen²

1986

IEE Proc. C Gener. Transm. Distrib. UK

Self Cite

View full text Add to dashboard Cite

show abstract

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

View full text Add to dashboard Cite

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.

show abstract

A Method to Improve Frequency Stability Using Location-based Load Shedding: Study Case of Senayan-Sambas Power System

Yonathan

Ramadhan

Ardita

et al. 2019

2019 IEEE International Conference on Innovative Research and Development (ICIRD)

View full text Add to dashboard Cite

Phase-variable modelling of saturated reactor compensators with particular reference to long-distance transmission

Cited by 3 publications

References 0 publications

Developments in phase-variable modelling for thyristor-controlled reactive-power compensators

Developments in phase-variable modelling for thyristor-controlled reactive-power compensators

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

A Method to Improve Frequency Stability Using Location-based Load Shedding: Study Case of Senayan-Sambas Power System

Contact Info

Product

Resources

About