Method for establishing controllable serial compensation linearized model
A linearization and model technology, applied in flexible AC transmission systems, reactive power adjustment/elimination/compensation, etc., can solve the problems affecting the accuracy of analysis results, discontinuous switching characteristics of power electronic devices, and difficulties in the application of characteristic analysis methods, etc. problem, to achieve a good effect of suppressing the effect of subsynchronous resonance
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[0020] The implementation technical solutions of the present invention will be described more clearly below in conjunction with the accompanying drawings and the description of the embodiments.
[0021] figure 1 The single-phase circuit structure of TCSC is given, which is composed of a pair of anti-parallel thyristors connected with inductors and then paralleled with capacitors. Due to the switching properties of thyristors, the dynamic characteristics of the entire circuit include continuous characteristics (capacitor voltage) and discrete events (thyristor firing). In order to establish a continuous mathematical model of TCSC, the effect of thyristor triggering on the capacitor voltage must be considered.
[0022] When the thyristor is fully turned on, TCSC is equivalent to a parallel LC circuit, and its characteristics can be described by formula (1):
[0023] C dV dt ...
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