New concept of power-based pole slip protection for dispersed generators in smart grid environment

This presentation describes a new pole-slipping protection method that combines high efficiency of pole slip detection and sensitivity to many sources of potential pole slipping. To simplify the setup process, the adaptive settings are calculated continuously. The new adaptive method utilizes active and reactive power measurements on machine terminals to ascertain that the synchronous machine is committed to pole slips. In doing so, it offers the capability of detecting pole slips even before they occur (predictive features). During the investigation, the main effort has been focused on the development of new protection techniques, which should ensure better (faster and more selective than currently known) detection of loss of synchronism in a synchronous machine. In the presentation, a new approach to pole slipping protection and exemplary results are presented. The method has been successfully tested with the utilization of data from simulations as well as signals from real synchronous machines in the laboratory.