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An AGC Dynamics-Constrained Economic Dispatch Model
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DOI：10.1109/TPWRS.2019.2908988.png)
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摘要
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The state-of-the-art MW-frequency control is performed by two hierarchical mechanisms: economic dispatch (ED) and automatic generation control (AGC). The ED is solved every 5 min identifying the most economic generation dispatch and reserve schedule. AGC is a feedback control system that regulates area control error by sending signals to regulation reserve every 26 s. In system with high renewable penetration and associated high net-load variability, the conventional ED-AGC hierarchical model may result in degraded MW-frequency performance and increasing operational cost. In this paper, an AGC dynamic constrained ED model is proposed to provide a more reliable and economical regulation reserve schedule in handling high net load variability. The continuous AGC dynamics is transformed into discrete state-space model, and the fast AGC dynamics are eliminated to reduce the system order. The discretized reduced-order AGC dynamics are incorporated into the ED to optimize the regulation schedule. The proposed model can be applied in a look-ahead mode with very short-term load forecast or in a look-back mode to provide a perfect dispatch benchmark based on historical net load data. The 5-bus and 118-bus systems are tested to demonstrate the effectiveness of the proposed model.
Keyword:
Automatic generation control (AGC)
economic dispatch (ED)
regulation reserve
control performance standard (CPS)
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7.2
论文数:
1.1W
被引数:
5.0W
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Connecting Automatic Generation Control and Economic Dispatch From an Optimization View从优化的角度将自动发电控制与经济调度联系起来
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