Power Research

Dijin Divakaran ¹, Amit Jain ¹

Affiliations
1 Smart Power & Energy System, Power Systems Division, Central Power Research Institute, Bangalore-560080, IN

Abstract

Power systems, nowadays, are subjected to severe oscillations during the post disturbance span of time because of its operation at very narrow stability margins. Out-of-step condition is a consequence of transient instability and protection against out-of-step condition is a major issue for the power industry. In order to operate a system safely and to protect from the damages caused to system components such as generators, transmission lines and switching equipment, proper out-of-step detection and necessary protective action has to be provided. This paper explains the various out-of-step detection strategies which can be augmented to the numerical relaying algorithms, their computational simplicity and reliability and also discusses the issues and challenges related to implementation.

Keywords

Distance protection, numerical relays, out-of-step detection, phasor measurement, power swing and transient instability

Full Text

     

Dijin Divakaran ¹, Amit Jain ¹

Affiliations
1 Smart Power & Energy System wing, Power Systems Division, Central Power Research Institute, Bangalore - 560 080, IN

Abstract

Due to the large scale network complexities, system wide disturbances in power systems are a challenging issue for the power industry. When a major power system disturbance occurs, protection and control actions are required to stop the degradation of the system and restore to a normal state thereby minimizing the impact of the disturbance. Improvements in planning and operation of the grid could be achieved by Wide Area Monitoring, Protection and Control (WAMPAC) Applications. The purpose of wide area monitoring system is to monitor, assess, enable and automatically take necessary action to mitigate the harmful effects due to disturbances or faults in the system. This paper discusses in details WAMPAC. The present work also gives an overview of the Phasor Measurement technology and it benefits, requirements and applications for WAMPAC strategies.

Keywords

Out-of-step protection, Phasor measurement unit, Power swing detection, WAMPAC, Wide area protection.

Full Text