Web-based Integrated Stability Enhancement Strategy for Distribution and Transmission Systems

This paper proposes a new strategy for integrated voltage stability enhancement of transmission and distribution systems. The proposed strategy aims to save a distribution system from an imminent voltage collapse due to contingencies occurring in the transmission or distribution system, by executing appropriate control operations. The operations include coordinated generator controls, load tap changers, load shedding, etc. This paper shows the use of state-of-the-art digital signal processing technology for determination of correct stability controls and the application of modern computer networking technology for real-time monitoring of distribution system operating states and transmitting of data and stability control commands. This paper presents the design of a new two-layer architecture for network monitoring, data transmitting, and control delivering operations. This architecture is fault tolerant and is specially designed for monitoring a distribution network with a large number of circuit nodes. Typical network-enabled adaptive stability enhancement is illustrated.