Abstract
In wide area monitoring, protection, and control (WAMPAC) systems, angle stability of transmission network is monitored using data from phasor measurement units (PMU) placed on transmission lines. Based on this PMU data stream advanced algorithm for out-of-step condition detection and early warning issuing is developed. The algorithm based on theoretical background described in this paper is backed up by the data and results from corresponding simulations done in Matlab environment. Presented results aim to provide the insights of the potential benefits, such as fast and efficient detection and reaction to angle instability, this algorithm can have on the improvement of the power system protection. Accordingly, suggestion is given how the developed algorithm can be implemented in protection segments of the WAMPAC systems in the transmission system operator control centers.
Highlights
Transmission network control centers use a large number of applications for control and protection of transmission power system network
Developing protection algorithm for fast and efficient detection and reaction to angle instability is important for transmission network operations
This paper presented simulation results that provide guidelines for applications in control centers
Summary
Transmission network control centers use a large number of applications for control and protection of transmission power system network. Dynamic analysis of different transient phenomena in the transmission network is enabled by the availability of PMU data streams [6] Usage of such data streams from PMU for the development of WAMPAC systems with advanced angle instability protection functionalities is in more details elaborated in [7]. The prerequisite for such advanced angle instability protection algorithms are PMUs installed across the important nodes in the transmission system. Information synthesis from the PMU measurements can be used even to predict potential power swings [10] and even further enhance the power system protection These algorithms are to be implemented into future WAMPAC systems and will give good observability and protection for transmission power system in general and for each line equipped with
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