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Security-Constrained Unit Commitment With Linearized System Frequency Limit Constraints
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DOI：10.1109/TPWRS.2014.2297997.png)
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摘要
En 中文
Rapidly increasing the penetration level of renewable energies has imposed new challenges to the operation of power systems. Inability or inadequacy of these resources in providing inertial and primary frequency responses is one of the important challenges. In this paper, this issue is addressed within the framework of security-constrained unit commitment (SCUC) by adding new constraints representing the system frequency response. A modified system frequency response model is first derived and used to find analytical representation of system minimum frequency in thermal-dominant multi-machine systems. Then, an effective piecewise linearization (PWL) technique is employed to linearize the nonlinear function representing the minimum system frequency, facilitating its integration in the SCUC problem. The problem is formulated as a mixed-integer linear programming (MILP) problem which is solved efficiently by available commercial solvers. The results indicate that the proposed method can be utilized to integrate renewable resources into power systems without violating system frequency limits.
Keyword:
Inertial response
primary frequency control
security-constrained unit commitment
wind power
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期刊
IF:
7.2
论文数:
1.1W
被引数:
5.7W
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