GTO over current rapid protection by gradation mode and limited protection conditions are studied based on the features of GTO and over current situation under fault state.
The mode currents form a weighted orthogonal set over the conductor surface, and the mode fields form an orthogonal set over the sphere at infinity.
经典特征模理论提供了一套在导体表面形成加权正交系的特征电流，在无穷远球面上形成正交系的特征场。
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The results show that power frequency over-voltage does have relationships with the operation mode to a great extent, and different operation modes may cause distinct values of over-voltage.