Stability Analysis of Grid-Forming MMC-HVDC Transmission Connected to Legacy Power Systems

被引:9
|
作者
Lourenco, Luis F. N. [1 ,2 ]
Perez, Filipe [3 ]
Iovine, Alessio [1 ,4 ]
Damm, Gilney [5 ]
Monaro, Renato M. [2 ]
Salles, Mauricio B. C. [2 ]
机构
[1] Univ Paris Saclay, Cent Supelec, Lab Signaux & Syst L2S, 3 Rue Joliot Curie, F-91190 Gif Sur Yvette, France
[2] Univ Sao Paulo, Polytech Sch, Lab Adv Elect Grids LGrid, 158 Av Prof Luciano Gualberto,Travessa 3, BR-05508010 St Paul, Brazil
[3] Lactec Inst, Power Syst Grp, Rodovia BR-116,8813 Jardim Americas, BR-80215090 Curitiba, Parana, Brazil
[4] CNRS, 3 Rue Joliot Curie, F-91190 Gif Sur Yvette, France
[5] Univ Gustave Eiffel, IFSTTAR, COSYS LISIS, F-77447 Marne La Vallee, France
关键词
power system stability; voltage source converters; modular multilevel converter; grid-forming converter; future power system; HVDC; energy function stability analysis; MODULAR MULTILEVEL CONVERTERS; VIRTUAL SYNCHRONOUS MACHINE; CONTROL STRATEGIES; ANGLE STABILITY; FREQUENCY; VOLTAGE; INVERTERS; OPERATION; MODEL;
D O I
10.3390/en14238017
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The power system is going through a change in its very foundations. More and more power converters are being integrated into the electric grid to interface renewable energy resources and in high-voltage direct-current (HVDC) transmission systems. This article presents a discussion on the stability of power systems when HVDC transmission systems based on modular multilevel converters (MMC) are connected in grid-forming (GFM) mode to the legacy power system using concepts of energy functions and Lyapunov stability theory and considering aspects of the interoperability between GFM converter technologies. As a base for the stability analysis, we review the main GFM converter technologies (droop and virtual synchronous machine), highlighting their differences. Then, we present a model using the center-of-inertia formulation for a multi-machine/multi-GFM converter power system representing a close future scenario of power systems where GFM converters might adopt different technologies. To illustrate the theoretical Lyapunov-based stability analysis, simulations performed in Matlab/Simulink showed the behavior of a 12-bus test system during a frequency disturbance that originated from the sudden connection of a load. To reflect the interoperability of different GFM technologies and the power system, scenarios with one single GFM technology and a scenario with mixed technologies were investigated. For the test system considered, the frequency response with fewer oscillations and a higher frequency nadir was obtained when all GFM converters were operated as VSMs that have a higher inertial response contribution.
引用
收藏
页数:25
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