| 引用本文: | 李国庆,孙赫阳,韩杰祥,等.弱支撑直流外送系统下计及有功电压耦合的多类型资源有功调节空间量化及实时控制方法[J].电力系统保护与控制,2026,54(04):14-24.[点击复制] |
| LI Guoqing,SUN Heyang,HAN Jiexiang,et al.Quantification of active power regulation space and real-time control for multi-type resources considering active power-voltage coupling in weakly supported DC transmission systems[J].Power System Protection and Control,2026,54(04):14-24[点击复制] |
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| 摘要: |
| 弱支撑新能源基地直流外送系统低惯量、弱阻尼、低短路比等特征凸显，有功与电压存在强耦合关系，导致现有有功实时控制模式难以适用。为此，提出了一种兼顾静态电压安全约束与多类型资源有效调节空间的有功实时控制方法，在维持系统安全稳定运行的同时合理利用调节资源。首先，分析了系统有功电压耦合的诱因并建立灵敏度指标，量化了不同运行工况下有功电压耦合程度。接着，考虑新能源出力不确定性对系统电压的影响，结合阻抗模裕度指标，提出了基于概率潮流计算的电压薄弱点识别方法，通过分析多类型资源有功出力对薄弱点电压的影响，提出了计及静态电压安全约束的多类型资源有功调节空间量化方法。然后，结合电压有功灵敏度和多类型资源有效调节空间，设计了考虑调控资源选取及功率差异化分配的有功实时控制策略，在满足有功调控需求的同时降低对薄弱点电压的影响。最后，基于改进的IEEE30节点算例，验证了所提方法的有效性。 |
| 关键词: 弱支撑直流外送系统 自动发电控制 有功调节空间 有功实时控制 |
| DOI：10.19783/j.cnki.pspc.250652 |
| 投稿时间：2025-06-16修订日期：2025-12-14 |
| 基金项目:国家电网公司总部科技项目资助(5100-202340815A-3-8-KJ) |
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| Quantification of active power regulation space and real-time control for multi-type resources considering active power-voltage coupling in weakly supported DC transmission systems |
| LI Guoqing1,SUN Heyang1,HAN Jiexiang2,NIU Zhen3,JIANG Shouqi1,XIN Yechun1 |
| (1. Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education
(Northeast Electric Power University), Jilin 132012, China; 2. State Grid Gansu Electric Power Company, Lanzhou 730030, China;
3. Electric Power Research Institute, State Grid Gansu Electric Power Company, Lanzhou 730000, China) |
| Abstract: |
| In DC transmission systems exporting power from weakly supported renewable energy bases, characteristics such as low inertia, weak damping, and low short-circuit ratio become prominent. Strong coupling between active power and voltage exists, making conventional real-time active power control modes difficult to apply. To address this issue, this paper proposes a real-time active power control method that simultaneously considers static voltage security constraints and the effective regulation space of multi-type resources, ensuring system stability while optimizing resource utilization. First, the coupling mechanism is analyzed, and a sensitivity index is established to quantify coupling degrees under different operating conditions. Then, considering renewable energy uncertainty, a voltage weak point identification method based on probabilistic power flow is proposed by integrating impedance modulus margin. By analyzing the effects of active power outputs of different types of resources on weak-point voltages, a method for quantifying the active power regulation space of multi-type resources under static voltage security constraints is developed. Then, integrating active power-voltage sensitivity and the effective regulation space of multi-type resources, a real-time active power control strategy is designed that accounts for regulation resource selection and differentiated power allocation, thereby meeting active power regulation requirements while reducing adverse impacts on weak-point voltages. Finally, the effectiveness of the proposed method is validated through case studies based on a modified IEEE 30-bus system. |
| Key words: weakly supported HVDC transmission systems automatic generation control active power adjustment space real-time active power control |
