Computer-aided relay protection coordination: Final report

Technical Report · Thu Dec 01 04:00:00 EST 1988

OSTI ID:6538162

Venkata, S S; Damborg, M J; Jampala, A K; Ramaswami, R

This is the final report on RP2444-2 which provides power system protection engineers with interactive tools for coordination of overcurrent and distance relays. The initial efforts of this project was under RP1764-6 and resulted in the EPRI report EL-3337 and in the first version of a set of computer programs to accomplish the coordination task. This report completes the documentation of that work. Two final versions of the computer codes have been developed and are distributed by Electric Power Software Center, Dallas, Texas, one for IBM mainframes and one for PC's. This report documents all the enhancements of the code beyond the results reported in EL-3337. These enhancements include further development of the database, a more efficient approach to the topological analysis and more efficient algorithms for the coordination of overcurrent and distance relays. An important feature of the code is that these modules are all integrated with a relational database management system (DBMS). The report also contains a discussion of the four test systems used in the code development and validation. Complete results are given for the largest test system, TS 4, a 38 bus, 61 line system from the Puget Sound Power and Light Co. (PSPL). This CAE tool has proven to be very useful in engineering practice. PSPL uses it on a regular basis for their coordination needs and it has proven to give results that are at least as good, and in many respects superior to, those achieved ''manually''. Of course, it does so with a great savings in engineering effort. Finally, two advanced concepts, namely, subsystem coordination and adaptive transmission protection, are also introduced and described. 52 refs., 56 figs., 27 tabs.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (USA); Washington Univ., Seattle (USA). Dept. of Electrical Engineering
• OSTI ID: 6538162
• Report Number(s): EPRI-EL-6145; ON: TI89005539
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200104* -- Fossil-Fueled Power Plants-- Components
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
COMPUTER CODES
COMPUTERS
DATA BASE MANAGEMENT
DOCUMENT TYPES
ELECTRICAL EQUIPMENT
ENERGY SYSTEMS
ENGINEERED SAFETY SYSTEMS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
MANAGEMENT
OVERCURRENT
POWER DISTRIBUTION
POWER SYSTEMS
POWER TRANSMISSION
PROGRESS REPORT
R CODES
RELAYS