Automatic identification method for electromechanical transient instability mode

• Main Authors: DONG YIFENG, WANG HONGFU, ZHONG WUZHI, FENG JING, YANG XUETAO, ZHANG ZHIQIANG, XU PENGFEI, WANG YI, DU SANEN, ZHANG HAISHUN, HOU JUNXIAN
• Format: Patent
• Language: English
• Published: 06.01.2016
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The present invention provides an automatic identification method for an electromechanical transient instability mode. The electromechanical transient instability mode comprises a power angle instability mode and a voltage instability mode. The method comprises the steps of: analyzing and accounting network structures; determining whether a system is in a power angle stable state and a voltage stable state; identifying an oscillation center section and a low voltage load region; and determining an area corresponding to the power angle instability mode and the voltage instability mode. According to the method of the present invention, a property difference among actual different power grids are taken into full consideration and are well integrated, and a simple and practical method is provided from a relatively complex theoretical research result; and characteristics of actual high-voltage grids are taken into full consideration, so that the method has relatively wide adaptability to the high-voltage grids with different structures.