Efficient Simulation of Cascading Outages Using an Energy Function-Embedded Quasi-Steady-State Model
Journal Article
·
· IEEE Transactions on Power Systems
- Univ. of Tennessee, Knoxville, TN (United States)
- ISO New England, Windsor, CT (United States)
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Cornell Univ., Ithaca, NY (United States)
Here, this paper proposed an energy function-embedded quasi-steady-state model for efficient simulation of cascading outages on a power grid while addressing transient stability concerns. Compared to quasi-steady-state models, the proposed model incorporates short-term dynamic simulation and an energy function method to efficiently evaluate the transient stability of a power grid together with outage propagation without transient stability simulation. Cascading outage simulation using the proposed model conducts three steps for each disturbance such as a line outage. First, it performs time-domain simulation for a short term to obtain a post-disturbance trajectory. Second, along the trajectory, the system state with the local maximum potential energy is found and used as the initial point to search for a relevant unstable equilibrium by Newton's method. Third, the transient energy margin is estimated based on this unstable equilibrium to predict an out-of-step condition with generators. The proposed energy function-embedded quasi-steady-state model is tested in terms of its accuracy and time performance on an NPCC 140-bus power system and compared to a quasi-steady-state model embedding transient stability simulation.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE Office of Electricity (OE)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 2573360
- Alternate ID(s):
- OSTI ID: 2573524
- Journal Information:
- IEEE Transactions on Power Systems, Journal Name: IEEE Transactions on Power Systems Journal Issue: 4 Vol. 40; ISSN 1558-0679; ISSN 0885-8950
- Publisher:
- IEEECopyright Statement
- Country of Publication:
- United States
- Language:
- English
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