| 摘要 |
<p>A real-time emergency control method of relative kinetic energy-based power system transient stability. The system transient stability is monitored in real time by using a method of judging a change trend of rotation speed difference-power-angle difference, and is used as a startup condition of emergency control. When determining that a system will lose power-angle stability, the method calculates a remaining accelerating area based on a relative kinetic energy concept in a two-machine system, and uses an equal-area criterion to calculate and control a generator tripping value. In a control decision-making process, an impact of an action delay time is considered, making a calculation result more reliable. The method overcomes defects that a running method and a fault need to be predicted during offline calculation and that there is a lack of flexibility in handling a small-probability emergency accident, has strong adaptability and flexibility, and improves a safe and stable running level of the power system.</p> |
