Consensus + Innovations Approach for Online Distributed Multi-Area Inertia Estimation
arxiv(2024)
摘要
The reduction of overall system inertia in modern power systems due to the
increasing deployment of distributed energy resources is generally recognized
as a major issue for system stability. Consequently, real-time monitoring of
system inertia is critical to ensure a reliable and cost-effective system
operation. Large-scale power systems are typically managed by multiple
transmission system operators, making it difficult to have a central entity
with access to global measurement data, which is usually required for
estimating the overall system inertia. We address this problem by proposing a
fully distributed inertia estimation algorithm with rigorous analytical
convergence guarantees. This method requires only peer-to-peer sharing of local
parameter estimates between neighboring control areas, eliminating the need for
a centralized collection of real-time measurements. We robustify the algorithm
in the presence of typical power system disturbances and demonstrate its
performance in simulations based on the well-known New England IEEE-39 bus
system.
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