Ferroresonance identification and treatment method for shale gas field power distribution network

• Main Authors: MENG LIANG, HAN BIN, WU XUEBING, LIU QI, FU YISHENG, LIU SHUO, LI SHUYING, SONG DONGBIN, HONG LIANG, DING QIAO, REN KUIJIE, YAO LIN, ZHOU BING, CHU CHUN
• Format: Patent
• Language: Chinese; English
• Published: 09.09.2022
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a ferromagnetic resonance identification and treatment method for a shale gas field power distribution network, and the method comprises the steps: building a phase space through a voltage time sequence, judging whether the ferromagnetic resonance occurs in the phase space through a Poincare cross section method, and judging the type of the ferromagnetic resonance, and installing an active inversion device between a neutral point of the shale gas field power distribution network and the ground. Three-step model predictive control is adopted to change an injected zero-sequence current value so as to enable the neutral point voltage to be zero, and ferromagnetic resonance is inhibited fundamentally. According to the method, the Poincare cross section is used as a ferromagnetic resonance analysis tool, the active inversion device based on three-step model control is used as a ferromagnetic resonance treatment measure, feature extraction, fault analysis and real-time treatment of the ferro