BPS. Facilities and control systems for an transmission network.
Bulk-Power System (BPS)
Any electric generation resources, transmission lines, interconnections with neighboring systems, and associated equipment.
BPS
(A) Facilities and control systems necessary for operating an interconnected electric energy transmission network (or any portion thereof); and (B) electric energy from generation facilities needed to maintain transmission system reliability. The term does not include facilities used in the local distribution of electric energy. (Note that the terms “Bulk-Power System” or “Bulk Power System” shall have the same meaning.)
What is the difference between the Bulk Power System and the Bulk Electric System?
NERC defines the bulk power system (BPS) as the facilities and control systems necessary for operating an interconnected electric energy transmission network (or any portion thereof); and electric energy from generation facilities needed to maintain transmission system reliability. The term does not include facilities used in the local distribution of electric energy.
The Bulk Electric System (BES) is defined in NERC’s Glossary of Terms as all transmission elements operated at 100 kV or higher and real power and reactive power resources connected at 100 kV or higher. Facilities used in the local distribution of electric energy are not included in this term.
BES facilities that impact BPS reliability are subject to compliance with NERC’s mandatory Reliability Standards. The distribution system, which is defined the system that transports power from the transmission system to the end-use customer, is not overseen by NERC and is under the jurisdiction of state, provincial, or local utility regulatory agencies, except under-frequency load shedding and under-voltage load shedding relays located on the distribution system.