Hybrid-model transient stability simulation using dynamic phasors based HVDC system model

As the development of high voltage direct current (HVDC) transmission, the problems of harmonic instability become more prevalent. Besides, harmonic instability in exceedingly weak HVDC systems is particularly serious. The modulation of the DC converter based on switching function is deduced. By considering the whole process of harmonic transferring at the AC and DC side through converters from the perspective of circuit, the generation conditions of harmonic instability are analyzed. Then an exceedingly weak HVDC system model is established and simulated in PSCAD/EMTDC software to verify the theoretical analysis. The study results provide theoretical basis and computational methods to solve the problems of harmonic instability in HVDC systems.

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A hybrid model for transient stability evaluation of interconnected longitudinal power systems using neural network/pattern recognition approach

IEEE Transactions on Power Systems ◽

10.1109/59.317554 ◽

1994 ◽

Vol 9 (1) ◽

pp. 85-92 ◽

Cited By ~ 8

Author(s):

C.S. Chang ◽

D. Srinivasan ◽

A.C. Liew

Keyword(s):

Neural Network ◽

Pattern Recognition ◽

Power Systems ◽

Hybrid Model ◽

Transient Stability ◽

Stability Evaluation ◽

Pattern Recognition Approach ◽

Network Pattern

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A Modeling Method for HVDC Control on RTDS Simulation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.756-759.250 ◽

2013 ◽

Vol 756-759 ◽

pp. 250-253

Author(s):

You Qiang Zhang ◽

Rui Lin Xu ◽

Jia Yong Zhong ◽

Xu Hou ◽

Luo Jiang Qian

Keyword(s):

Basic Principle ◽

System Performance ◽

Control Model ◽

System Model ◽

Hvdc System ◽

Control Models ◽

Verification Test ◽

Essential Function ◽

System Dynamic Simulation ◽

Power System Model

Converter control model plays an essential function for HVDC system dynamic simulation in real time simulator (RTDS). RTDS can provide approach for detailed studies of options and predictions of the system performance. This paper first presents the basic principle of the power control, firing control and transformer tap control. Then the paper presents our modeling effort for these control models. The configuration of control models includes major sections of practical controls. The paper also makes final verification test of these sections with a typical power system model. The validity of proposal methods and designed simulation model is verified by tests and computed results. The built HVDC control model is competent for the RTDS simulation.

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The Hybrid Model: A Novel Approach for Transitioning from the Bus-Branch/Planning to the Node-Breaker/Operation System Model

2019 IEEE Power & Energy Society General Meeting (PESGM) ◽

10.1109/pesgm40551.2019.8974121 ◽

2019 ◽

Author(s):

R Ramanathan ◽

Anand Popat ◽

Orlando Ciniglio

Keyword(s):

Hybrid Model ◽

System Model ◽

Operation System ◽

Novel Approach

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Electromechanical Transient Modeling of Line Commutated Converter-Modular Multilevel Converter-Based Hybrid Multi-Terminal High Voltage Direct Current Transmission Systems

Energies ◽

10.3390/en11082102 ◽

2018 ◽

Vol 11 (8) ◽

pp. 2102 ◽

Cited By ~ 9

Author(s):

Liang Xiao ◽

Yan Li ◽

Huangqing Xiao ◽

Zheren Zhang ◽

Zheng Xu

Keyword(s):

High Voltage ◽

Direct Current ◽

Power Flow ◽

Large Scale ◽

Transient Stability ◽

Modular Multilevel Converter ◽

Multilevel Converter ◽

Hvdc System ◽

High Voltage Direct Current ◽

Current Transmission

A method for electromechanical modeling of line commutated converter (LCC)-modular multilevel converter (MMC)-based hybrid multi-terminal High Voltage Direct Current Transmission (HVDC) systems for large-scale power system transient stability study is proposed. Firstly, the general idea of modeling the LCC-MMC hybrid multi-terminal HVDC system is presented, then the AC-side and DC-side models of the LCC/MMC are established. Different from the conventional first-order DC-side model of the MMC, an improved second-order DC-side model of the MMC is established. Besides considering the firing angle limit of the LCC, a sequential power flow algorithm is proposed for the initialization of LCC-MMC hybrid multi-terminal HVDC system. Lastly, simulations of small scale and large scale power systems embedded with a three-terminal LCC-MMC hybrid HVDC system are performed on the electromechanical simulation platform PSS/E. It is demonstrated that if the firing angle limit is not considered, the accuracy of the power flow solutions will be greatly affected. Steady state calculation and dynamic simulation show that the developed LCC-MMC hybrid MTDC model is accurate enough for electromechanical transient stability studies of large-scale AC/DC system.

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