适应主导薄弱断面迁移的暂态稳定控制

苗田; 郑 超; 马世英; 刘观起; 柯贤波; 牛栓保; 宋云亭

引用本文:	苗田,郑超,马世英,等.适应主导薄弱断面迁移的暂态稳定控制[J].电力系统保护与控制,2016,44(19):41-48.
	MIAO Tian,ZHENG Chao,MA Shiying,et al.Transient stability control adapting to dominant weak section migration[J].Power System Protection and Control,2016,44(19):41-48

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适应主导薄弱断面迁移的暂态稳定控制
苗田¹,郑超²,马世英²,刘观起¹,柯贤波³,牛栓保³,宋云亭²
(1.华北电力大学(保定)，河北保定 071003;2.中国电力科学研究院，北京 100192; 3..西北电网有限公司，陕西西安 710048)

摘要:

为适应电网大扰动冲击下，表征机群主导失稳模式的主导薄弱断面动态迁移之复杂场景，需要制定相应暂态稳定控制策略。在薄弱断面关键支路识别方法，以及关键受扰轨迹几何特征判稳方法的基础上，针对大扰动冲击下主导薄弱断面迁移的复杂扰动场景，提出了以交流支路实时受扰电气量为信息源的暂态稳定控制策略，可有效降低系统失稳风险。大容量长距离交直流混联输电系统仿真结果，验证了控制策略的有效性。

关键词: 振荡中心薄弱断面迁移暂态稳定控制关键支路受扰轨迹几何特征控制策略

DOI：10.7667/PSPC151770

分类号:

基金项目:国家自然科学基金项目(51207143)

Transient stability control adapting to dominant weak section migration

MIAO Tian¹,ZHENG Chao²,MA Shiying²,LIU Guanqi¹,KE Xianbo³,NIU Shuanbao³,SONG Yunting²

(1. North China Electric Power University (Baoding), Baoding 071003, China;
;2. China Electric Power Research Institute, Beijing 100192, China;
;3. Northwest Power Grid, Xi’an 710048, China)

Abstract:

In order to adapt to complex scenario of the dynamic transfer of the dominant weak section which is characterized of leading instability mode of the dominant generator cluster under the large disturbance impact of power network, corresponding transient stability control strategy is needed. Based on the method such as identification of the key branch in the weak AC section and distinguishing the stability according to the geometrical feature of the key branch’s disturbed trajectory, aiming to the complex disturbance scenarios that the weak AC section with oscillation center located will migrate after disturbed, a transient stability control strategy adapting to this scenario is proposed, which uses the real-time disturbed electric quantities of the key branch as the information source. Simulation results got from the HVDC and AC hybrid system verify the effectiveness of the control strategy. This work is supported by National Natural Science Foundation of China (No. 51207143).

Key words: oscillation center weak AC section migration transient stability and control key branch disturbed trajectory geometrical features control strategy

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