Protection and safety requirements for electric distribution systems with dispersed storage and generation (DSG) devices

Technical Report · Wed Aug 01 04:00:00 EDT 1984

OSTI ID:6429971

Rizy, D T

Major protection problems associated with operating DSG in the distribution system are identified. Results of analyzing the effect of DSG infeed on fuse melting times, overvoltages due to resonance between shunt capacitors and DSG, and self-excitation of DSG on an islanded feeder section are discussed. A major objective of the studies was to assess the adequacy of conventional protection practices and hardware for accommodating DSG in distribution systems. Recommendations for mitigating the effect of DSG on conventional protection practices and hardware are made. A general methodology has been developed for identifying protection functions needed for DSG installations. This report identifies some of the cost components associated with interconnecting DSG to the electric system and gives estimates for several example DSG interconnection schemes. Alternate protection schemes were investigated and are addressed. Recommendations for new maintenance practices and requirements for new hardware for maintaining and repairing distribution systems with DSG are made.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6429971
• Report Number(s): ORNL/CON-143; ON: DE84017644
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200000* -- Fossil-Fueled Power Plants
COST
DISPERSED STORAGE AND GENERATION
ELECTRICAL FAULTS
ENERGY SYSTEMS
EQUIPMENT PROTECTION DEVICES
INTERCONNECTED POWER SYSTEMS
POWER SYSTEMS
SAFETY