Operating Experience Assessment: Effects of Grid Events on Nuclear Power Plant Performance

摘要

Deregulation of the electrical industry has resulted in major changes to the structure of the industry over the past few years. Whereas before, electric utilities produced the electricity and operated the transmission and distribution system, that is no longer the case. In many states, the electric utilities have split into separate generating companies, and transmission and distribution companies. Most nuclear power plant (NPP) operators no longer have control of the transmission and distribution system operations. NPPs rely on outside entities to maintain adequate reactive and voltage support for NPP operation. An assessment was completed by the Office of Nuclear Regulatory Research (RES) to identify changes to grid performance relative to NPPs which could impact safety. The assessment also provides some numerical measures to characterize grid performance before and after deregulation in particular, those related to loss of offsite power (LOOP).