Investigation in electrical power systems protection using digital computers
Thesis/Dissertation
·
OSTI ID:6217815
The advent of the microcomputer removes the financial barrier to the use of digital computers for the protection of electric power systems. The development and testing of hardware and software for the implementation of a digital protective relay is presented in this research. The relay system described places the growth of digital protective relaying at the state of a functioning laboratory development system. Five main areas of improvement of existing digital schemes for protective relaying were investigated: (1) The investigation of hardware improvements to reduce complexity and improve the performance of an existing system. (2) The analysis and testing of digital filters to improve the performance of an existing system in the area of computational burden, transient surpression, and response time. (3) The development and testing of algorithms for the generation of the impedance, mho and ohm relay characteristics based on phasor methods. (4) The development and testing of algorithms and hardware for a self protective relay. (5) The requirements of the microprocessor for a system using the methods described. The performance of the relay system when tested with a transmission line network analyzer and fault controller, meets or exceeds the major specifications of existing electromechanical and static relays. The additional features, such as software flexibility, self testing and digital and digital communication, promise the application of digital computers to protective relaying a bright future.
- OSTI ID:
- 6217815
- Country of Publication:
- United States
- Language:
- English
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