新能源接入场景下负荷侧暂态电压失稳判别方法

doi:10.6040/j.issn.1672-3961.0.2025.145

摘要/Abstract

摘要： 针对基于正反馈机理的传统暂态电压稳定性判别方法在新能源接入场景下判别准确性较低的问题,提出在原有判别方法基础上增加附加判据的改进策略。根据新能源机组控制策略,分析新能源机组在扰动后恢复阶段的电压动态特性,识别出新能源接入场景下原有判别方法准确性下降的原因;对基于正反馈机理的传统电压失稳判据进行改进,提出增加判据成立持续时间阈值与安全门槛电压的改进措施。在IEEE 39节点算例和CEPRI-TAVC标准算例中分别进行仿真验证,结果表明,适当延长判据成立持续时间阈值与降低安全门槛电压有利于提高暂态电压稳定性判别方法的准确性。

关键词: 新能源发电, 暂态电压稳定性, 判别方法, 附加判据, 准确性

Abstract: To address the issue of reduced identification accuracy in the conventional positive-feedback-based transient voltage stability identification method under renewable generation integration scenarios, an improved strategy incorporating additional criteria was proposed on the basics of the original method. Voltage dynamic characteristics during the post-disturbance recovery stage were examined according to renewable generation unit control strategies, and the factors responsible for the degraded accuracy of the original method under renewable integration were identified. The conventional positive-feedback-based voltage instability criterion was modified by introducing the criterion activation-duration threshold and the voltage safety threshold. Simulation-based validation was conducted on the IEEE 39-bus system and the CEPRI-TAVC benchmark system. The results showed that appropriately prolonging the criterion activation-duration threshold and reducing the voltage safety threshold improved the identification accuracy of transient voltage stability.

Key words: renewable energy generation, transient voltage stability, identification method, additional criteria, accuracy

中图分类号:

TM712

邹欣,孟健,傅诗琪,刘峻宇,王海丰,党崇阳. 新能源接入场景下负荷侧暂态电压失稳判别方法[J]. 山东大学学报 (工学版), 2026, 56(3): 166-176.

ZOU Xin, MENG Jian, FU Shiqi, LIU Junyu, WANG Haifeng, DANG Chongyang. Identification method of transient voltage instability in case of renewable generation supply[J]. Journal of Shandong University(Engineering Science), 2026, 56(3): 166-176.

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