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Explicit Data-Driven Small-Signal Stability Constrained Optimal Power Flow
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DOI：10.1109/TPWRS.2021.3135657.png)
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Abstract
En 中文
This paper proposes a data-driven small-signal stability constrained optimal power flow (SSSC-OPF) method with high computational efficiency. Instead of repeating the computational expense small-signal stability analysis via differential and algebraic equations during the iterative OPF process, a computationally cheap surrogate constraint for small-signal stability is developed. To reduce the learning difficulty for small-signal stability boundaries, an efficient sample generation strategy is proposed with sampling space compression. This allows us to use the support vector machine (SVM) with a kernel function to derive the explicit data-driven surrogate constraint for small-signal stability. Penalty factor optimization is proposed to compensate for the error caused by SVM. The learned small-signal stability constraint is embedded into the OPF model for generator control. An examination strategy is also developed to avoid the small-signal instability of re-dispatch caused by the error of the data-driven surrogate model. Comparison results with other model-based and data-driven methods on the IEEE 39-bus and 118-bus systems demonstrate the high computational efficiency and economic benefits of the proposed method.
Keywords:
Power system stability
Thermal stability
Generators
Stability criteria
Numerical stability
Support vector machines
Voltage
Optimal power flow
small-signal stability
sensitivity analysis
support vector machine
Journal
IF:
7.2
Papers:
1.1W
Citations:
5.0W