Converter transformer turn-to-turn short circuit multi-coupling field model order reduction method and system

• Main Authors: LYU SHUNLI, ZHANG BING, ZHOU JIE, ZUO HONGBING, WANG WEI, CAO DONGHONG, JI QIUHUA, ZHANG PENG, LUO XIN, DONG XUAN, LI JINBO, GUO ZHONGQI, HU ZHONGLIN, ZHANG HAIBIN, LIU SHIYU
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a converter transformer turn-to-turn short circuit multi-coupling field model order reduction method and system, and the method comprises the steps: firstly constructing a full-order turn-to-turn short circuit geometric model of a converter transformer turn-to-turn short circuit state, and solving a transient loss distribution function of a converter transformer through a magnetic flux density and current density distribution function of the converter transformer; the method comprises the following steps: constructing a turn-to-turn short circuit multi-coupling field model of a converter transformer, establishing an n-order single-input single-output nonlinear model, when solving a transient temperature field and a transient magnetic field, expanding the n-order single-input single-output nonlinear model, calculating a low-order model through a standard column orthogonal matrix V0, and performing left multiplication on two ends of the low-order model by # imgabs0 # to obtain a secondar