VANTAGE: A Lyapunov exponents based technique for identification of coherent groups of generators in power systems

• Identification of coherent group of generators.
• Rotor angle stability.
• Lyapunov exponents.

Recent trends of deregulation and expansion in power systems have greatly increased their stress levels and hence, ensuring their safety has become a critical challenge. In the event of disturbances, detecting the groups of coherent generators is important to study the characteristics of the system. We propose VANTAGE, a Lyapunov exponents based technique for identification of coherent groups of generators in power systems. VANTAGE performs time domain simulation of contingencies and uses this data to analyze rotor angle stability. VANTAGE offers an efficient algorithmic procedure for identification of coherent groups of generators using Lyapunov exponents method (LEM). VANTAGE does not require a priori estimation of number of groups of coherent generators. We evaluate VANTAGE using a 39-bus system and a 13029-bus system. The results demonstrate the effectiveness of VANTAGE in correctly identifying the coherent groups of generators.