郭博恒, 王程, 邹祖冰, 毕天姝. 基于局域电气量态势感知的新能源场站频率-电压协同支撑控制[J]. 中国电机工程学报, 2024, 44(24): 9658-9671. DOI: 10.13334/j.0258-8013.pcsee.231490
引用本文: 郭博恒, 王程, 邹祖冰, 毕天姝. 基于局域电气量态势感知的新能源场站频率-电压协同支撑控制[J]. 中国电机工程学报, 2024, 44(24): 9658-9671. DOI: 10.13334/j.0258-8013.pcsee.231490
GUO Boheng, WANG Cheng, ZOU Zubing, BI Tianshu. Frequency-voltage Cooperative Support Control for Renewable Energy Station Based on Situational Awareness of Local Electrical Quantities[J]. Proceedings of the CSEE, 2024, 44(24): 9658-9671. DOI: 10.13334/j.0258-8013.pcsee.231490
Citation: GUO Boheng, WANG Cheng, ZOU Zubing, BI Tianshu. Frequency-voltage Cooperative Support Control for Renewable Energy Station Based on Situational Awareness of Local Electrical Quantities[J]. Proceedings of the CSEE, 2024, 44(24): 9658-9671. DOI: 10.13334/j.0258-8013.pcsee.231490

基于局域电气量态势感知的新能源场站频率-电压协同支撑控制

Frequency-voltage Cooperative Support Control for Renewable Energy Station Based on Situational Awareness of Local Electrical Quantities

  • 摘要: 新能源场站频率、电压支撑控制能抑制扰动后并网点电气量波动,但单一维度优化频率或电压忽略了场站有功和无功支撑能力边界强耦合的现实。为此,该文基于模型预测控制算法,提出一种基于局域电气量态势感知的新能源场站频率-电压协同支撑控制方法。首先,结合场站一、二次系统结构及功率响应实测数据,分模块完成了风电/光伏/储能动态特性的近似表征。其次,针对频率支撑源网耦合互动和电压控制局域量测需求,建立场站频率-电压协同控制模型。再次,考虑扰动后并网点频率、电压支撑需求时变性,提出目标权重动态匹配机制,制定兼顾并网点支撑效果和场站调节代价的控制策略。随后,设计场站预测控制策略简化求解方法及实施流程。最后,以改进的IEEE 9节点系统验证所提方法的有效性,结果表明该方法能统筹场站有功无功调节能力,实现电压、频率协同支撑。

     

    Abstract: The implementation of frequency and voltage support control of renewable energy station can suppress fluctuations after the disturbance. However, the reality of strong coupling between the boundaries of active and reactive power support capacity is overlooked by solely optimizing frequency or voltage. Therefore, this paper proposes a frequency-voltage cooperative control method for renewable energy station based on situational awareness of local electrical quantities, using model predictive control algorithm. First, based on the station structures and power response measured data, an approximate characterization of the dynamic control response of the wind power/photovoltaic/energy storage modules is completed. Next, a cooperative support control model of the grid-connected point is established to address the issues of frequency support for source-network coupling interaction and voltage control for local measurement requirements. Taking into account the time-varying support requirements of frequency and voltage, a dynamic matching mechanism of target weights is proposed, and then a control strategy is developed considering the grid support capability and the regulation cost of the station. Subsequently, a simplified solution method and implementation steps of the control strategy are presented. Finally, taking the improved IEEE 9-bus System as an example, the validation is verified. The results show that this method can coordinate the active and reactive power regulation ability and realize the voltage and frequency cooperative support.

     

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