首页|Multi-area Frequency-constrained Unit Commitment for Power Systems with High Penetration of Renewable Energy Sources and Induction Machine Load

Multi-area Frequency-constrained Unit Commitment for Power Systems with High Penetration of Renewable Energy Sources and Induction Machine Load

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The increasing penetration of renewable energy sources(RESs)brings great challenges to the frequency security of power systems.The traditional frequency-constrained unit commitment(FCUC)analyzes frequency by simplifying the av-erage system frequency and ignoring numerous induction ma-chines(IMs)in load,which may underestimate the risk and in-crease the operational cost.In this paper,we consider a multi-area frequency response(MAFR)model to capture the frequen-cy dynamics in the unit scheduling problem,in which regional frequency security and the inertia of IM load are modeled with high-dimension differential algebraic equations.A multi-area FCUC(MFCUC)is formulated as mixed-integer nonlinear pro-gramming(MINLP)on the basis of the MAFR model.Then,we develop a multi-direction decomposition algorithm to solve the MFCUC efficiently.The original MINLP is decomposed into a master problem and subproblems.The subproblems check the nonlinear frequency dynamics and generate linear optimization cuts for the master problem to improve the frequency security in its optimal solution.Case studies on the modified IEEE 39-bus system and IEEE 118-bus system show a great reduction in operational costs.Moreover,simulation results verify the ability of the proposed MAFR model to reflect regional frequency secu-rity and the available inertia of IMs in unit scheduling.

Decomposition algorithmfrequency responsefrequency-constrained unit commitmentinduction machinemulti-areamixed-integer nonlinear programming(MINLP)

Leibao Wang、Hui Fan、Jifeng Liang、Longxun Xu、Tiecheng Li、Peng Luo、Bo Hu、Kaigui Xie

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State Grid Hebei Electric Power Research Institute,Shijiazhuang 050021,China

State Key Laboratory of Power Transmis-sion Equipment & System Security and New Technology,Chongqing Universi-ty,Chongqing 400044,China

Science and Technology Project of State Grid Hebei Electric Power Company Limited

kj2021-073

2024

10.35833/MPCE.2023.000002

现代电力系统与清洁能源学报(英文版)

现代电力系统与清洁能源学报(英文版)

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年,卷(期)：2024.12(3)
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