Evaluating the transient performance of emergency diesel generator units by computer modeling
Conference
·
· Transactions of the American Nuclear Society; (United States)
OSTI ID:6779835
Diesel generator units applied as standby power supplies for nuclear power generating stations are required to start, accelerate, and accept engineered safeguards loads within a specified time period. In addition, voltage and frequency at the generator terminals must be maintained within limits during normal and transient conditions, including transients caused by load application and removal. Traditionally, factory tests, site acceptance, and periodic test have been used to demonstrate the capability of diesel generator units. For the factory tests, equivalent loads are used to approximate the dynamic characteristics of the engineered safeguards loads. For site tests, it is difficult to obtain the actual loading that could occur during plant emergency conditions. Also, plant modifications to meet the ongoing regulatory process may require that existing diesel generator units supply more equipment. However, before changes are made to the loading of an existing diesel generator unit, it is necessary to analyze the effect of additional loads on its transient performance. Alternate loading sequences may have to be considered, and it may be necessary to consider replacing the governor or the voltage regulator to accommodate the load increases. The Electromagnetic Transient Analysis Program (EMTP) has recently been used to analyze the transient performance of existing and newly purchased diesel generator units at a nuclear power generating station. A model was developed to represent the dynamics of the diesel engine, governor, generator, exciter/regulator, motors with driven equipment, and other loads.
- OSTI ID:
- 6779835
- Report Number(s):
- CONF-901101--
- Conference Information:
- Journal Name: Transactions of the American Nuclear Society; (United States) Journal Volume: 62
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220200 -- Nuclear Reactor Technology-- Components & Accessories
220900* -- Nuclear Reactor Technology-- Reactor Safety
ACCELERATION
COMPUTER CODES
COMPUTERIZED SIMULATION
CONTROL SYSTEMS
DIESEL ENGINES
ELECTRIC GENERATORS
ENGINEERED SAFETY SYSTEMS
ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
LOAD ANALYSIS
LOAD MANAGEMENT
MANAGEMENT
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
PERFORMANCE TESTING
POWER PLANTS
REACTOR SAFETY
SAFETY
SIMULATION
SPECIFICATIONS
START-UP
TESTING
THERMAL POWER PLANTS
TIME DEPENDENCE
TRANSIENTS
VOLTAGE REGULATORS
220200 -- Nuclear Reactor Technology-- Components & Accessories
220900* -- Nuclear Reactor Technology-- Reactor Safety
ACCELERATION
COMPUTER CODES
COMPUTERIZED SIMULATION
CONTROL SYSTEMS
DIESEL ENGINES
ELECTRIC GENERATORS
ENGINEERED SAFETY SYSTEMS
ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
LOAD ANALYSIS
LOAD MANAGEMENT
MANAGEMENT
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
PERFORMANCE TESTING
POWER PLANTS
REACTOR SAFETY
SAFETY
SIMULATION
SPECIFICATIONS
START-UP
TESTING
THERMAL POWER PLANTS
TIME DEPENDENCE
TRANSIENTS
VOLTAGE REGULATORS