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Equivalent Circuit Formulation for Solving AC Optimal Power Flow
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DOI：10.1109/TPWRS.2018.2888907.png)
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摘要
En 中文
In this paper, we formulate and solve the ac optimal power flow (AC-OPF) as an equivalent circuit problem in terms of current, voltage, and admittance state variables. The generator models are represented using conductance and susceptance state variables, and the operational and network constraints are translated to corresponding current/voltage constraints without loss of accuracy or generality. To understand the physics behind the optimality conditions of the optimization problem, we extend the linear adjoint circuit theory to translate them to equivalent circuit domain. It is shown that the operating point that defines the equivalent circuit solution precisely represents an AC-OPF solution. We then further exploit the equivalent circuit representation to use power flow simulation techniques to robustly solve the optimization problem. The efficiency of our approach is demonstrated for several AC-OPF benchmark test cases (up to 70 k buses) under nominal and congested operating conditions, and the runtime and scalability properties are presented.
Keyword:
AC optimal power flow
equivalent circuit
circuit formulation
circuit formalism
nonlinear optimization
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期刊
IF:
7.2
论文数:
1.1W
被引数:
5.0W
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