Study on total fault clearing time in digital substations
- Resource Type
- Conference
- Authors
- Iamandi, Anamaria; Constantin, Iulia-Cristina; Constantin, Costel; Arghira, Nicoleta; Fagarasan, Ioana; Iliescu, Sergiu Stelia
- Source
- 2021 23rd International Conference on Control Systems and Computer Science (CSCS) CSCS Control Systems and Computer Science (CSCS), 2021 23rd International Conference on. :370-374 May, 2021
- Subject
- Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
General Topics for Engineers
Robotics and Control Systems
Signal Processing and Analysis
Performance evaluation
Substations
Stability criteria
Rotors
Power system stability
Circuit stability
Circuit faults
IEC 61850
digital substation
system stability
total fault clearing time
rotor angle response
- Language
- ISSN
- 2379-0482
One of the main characteristics of digital substations is the adoption of communication based on IEC 61850 at process level. The aim of this paper is to study the opportunity to introduce IEC 61850 at process level in modern substations. Definition and methodology of assessing the total fault clearing time is illustrated. The studied network area is a 220/110 kV substation from the Romanian Power System. The generated power by a hydroelectric power plant located in close proximity to the studied substation is evacuated to the national transmission grid through the studied 220 kV substation. To validate the benefits of digital communications, transient stability simulations are conducted considering different scenarios. The beneficial effects of numerical protection relays with fast communication are illustrated on the rotor angle response of a hydro-generator. The results show greater transient performance of the system compared with the classical devices.