Multi-In-Feed HVDC interaction studies using small signal stability assessment

Karawita, C.; Annakkage, U.D.

doi:10.1109/pes.2009.5275805

Cited by 14 publications

(20 citation statements)

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“…The currents and voltages in the network are combined together using Kirchhoff's laws. The authors have presented this technique in their previous publication [5].…”

Section: B Small Signal Model With Network Dynamics (Model-2)mentioning

confidence: 99%

“…The linear state space model of any dynamic device (an HVDC system in this example) can be represented as in (4) and (5). and are the changes in state variables and inputs of the dynamic device, respectively:…”

Section: ) Combining a Dynamic Devicementioning

confidence: 99%

“…The output current of the generator is a function of the state variables. The modeling details can be found in [11]:…”

Section: ) Combining a Dynamic Devicementioning

confidence: 99%

“…In general, the state space model of a dynamic network area can be represented by (10) and (11): (10) out (11) and contain all the state variables and the inputs of the dynamic devices of dynamic network area, respectively.…”

Section: Proposed Hybrid Model (Model-3)mentioning

confidence: 99%

“…The HVDC systems and flexible ac transmission systems (FACTS) devices also produce fast transients in addition to their characteristic harmonics. The electrical network dynamics cannot be neglected while analyzing the interactions among these devices [5]. In addition to that, the generators are required to be modeled with stator winding dynamics, which are ignored in typical small signal stability models.…”

Section: Introductionmentioning

confidence: 99%

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A Hybrid Network Model for Small Signal Stability Analysis of Power Systems

Karawita

Annakkage

2010

IEEE Trans. Power Syst.

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Small signal stability analysis in a power system is typically concerned with electromechanical oscillations. For this purpose, it is adequate to model the transmission system using a constant admittance matrix. For torsional oscillations and HVDC interactions, the frequency of interest is much higher and the constant admittance representation is not sufficient. This paper proposes a hybrid model, which allows the parts of the transmission network in the vicinity of HVDC converters or any other dynamic devices to be modeled with their dynamics and the remaining parts to be modeled as constant admittances. The proposed hybrid methodology for small signal stability assessment is the main contribution of this paper. The proposed methodology is validated against an electromagnetic transient simulation program (PSCAD/EMTDC) using time responses. The proposed model and two other small signal models are compared against each other in the frequency domain using modal analysis.Index Terms-Dynamic ac network model, HVDC interactions, small signal stability.

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“…The currents and voltages in the network are combined together using Kirchhoff's laws. The authors have presented this technique in their previous publication [5].…”

Section: B Small Signal Model With Network Dynamics (Model-2)mentioning

confidence: 99%

Section: ) Combining a Dynamic Devicementioning

confidence: 99%

“…The output current of the generator is a function of the state variables. The modeling details can be found in [11]:…”

Section: ) Combining a Dynamic Devicementioning

confidence: 99%