An Exponential Convergence Control Method for Global Stability of Flexible HVDC Transmission System
A technology of power transmission system and flexible DC, applied in the field of converter stations, can solve the problems of difficult parameter setting and optimization, long transient adjustment process, poor robustness, etc.
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[0064] The present invention is described in further detail below in conjunction with accompanying drawing:
[0065] The global stable exponential convergence control method of the flexible direct current transmission system described in the present invention comprises the following steps:
[0066] 1) Establish the mathematical model of the VSC-HVDC system in the three-phase static coordinate system, and then obtain the mathematical model of the VSC-HVDC system in the dq rotating coordinate system through coordinate transformation, and then convert the VSC-HVDC system in the dq rotating coordinate system The mathematical model below is converted to a PCHD model;
[0067] 2) Preset the energy function of the flexible DC transmission system, detect the passivity of the VSC-HVDC system, and preset the interconnection matrix J of the VSC-HVDC system when the VSC-HVDC system is passive d (x) and damping matrix R d (x), and then according to the preset interconnection matrix J d ...
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