A control method of cascaded h-bridge type distribution network arc suppression device
A device control and distribution network technology, applied in the direction of circuit devices, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc. Problems such as slow response speed and complicated parameter adjustment can achieve the effects of reducing calculation burden, fast dynamic response speed, and improving steady-state performance
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[0080] In this example, if Figure 4 As shown, a 10kV distribution network model containing cascaded H-bridge arc suppression devices is built using MATLAB / Simulink software to test the performance of the control method for cascaded H-bridge arc suppression devices. The test results show that this method has fast dynamic response speed, good stability performance, no need to adjust parameters, and can achieve good results under different fault resistance conditions. In the distribution network model, E X (X stands for A, B, C three-phase serial number, the same below) is the 10kV infinite system power supply; U X is the bus phase voltage; U 0 is the zero-sequence voltage of the distribution network; C X and r X are the capacitance and resistance of the distribution network to ground, respectively, and the parameters are 7μF and 30kΩ; I Xg is the ground current of the distribution network; I XZ is the injection current of the arc suppression device; L and R are the filter...
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