“风火打捆”交直流外送系统的暂态稳定控制研究

李生福; 张爱玲; 李少华; 郝正航; 曹森; 张望; 柴建云

引用本文:	李生福,张爱玲,李少华,等.“风火打捆”交直流外送系统的暂态稳定控制研究[J].电力系统保护与控制,2015,43(1):108-114.
	LI Shengfu,ZHANG Ailing,LI Shaohua,et al.Study on transient stability control for wind-thermal-bundled power transmitted by AC/DC system[J].Power System Protection and Control,2015,43(1):108-114

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“风火打捆”交直流外送系统的暂态稳定控制研究
李生福^1,2, 张爱玲¹, 李少华¹, 郝正航^1,3, 曹森¹, 张望¹, 柴建云³
1.许继电气股份有限公司，河南许昌 461000;2.贵州大学电气工程学院，贵州贵阳 550025;3.清华大学电机工程与应用电子技术系，北京 100084

摘要:

“风火打捆”交直流外送是未来千万千瓦级风电能源基地电力外送的重要方式之一，亟需掌握“风火打捆”交直流外送系统的稳定特性及其机理。功角是反映系统暂态稳定性的主要标志，分析了双馈电机的功角快变特性和“风火打捆”系统等值机械转动惯量对火电机组功角暂态稳定性的影响。针对系统的暂态稳定性问题，提出了一种附加控制策略，并设计出控制装置样机，可提高“风火打捆”系统的暂态稳定性。基于所提附加控制策略的试验样机通过了实时数字仿真器(Real Time Digital Simulator, RTDS)的闭环验证，结果表明：该

关键词: 风火打捆交直流转动惯量附加控制实时数字仿真器

DOI：10.7667/j.issn.1674-3415.2015.01.019

分类号:

基金项目:国家自然科学基金(51267003)；许继电气股份有限公司资助项目(2013);中国博士后科学基金项目(2013M531678)；河南省博士后科研资助项目(2011049); 贵州省社发科技攻关项目(黔科合SY字[2011]3081)

Study on transient stability control for wind-thermal-bundled power transmitted by AC/DC system

LI Shengfu^1,2, ZHANG Ailing¹, LI Shaohua¹, HAO Zhenghang^1,3, CAO Sen¹, ZHANG Wang¹, CHAI Jianyun³

1.XJ Group Corporation, Xuchang 461000, China;2.School of Electrical Engineering, Guizhou University, Guiyang 550025, China;3.Department of Electrical Engineering, Tsinghua University, Beijing 100084, China

Abstract:

For the 10 GW wind power bases in China, wind-thermal-bundled power transmitted by AC/DC system is regarded as one of feasible ways, but the stability characteristic of this kind of transmission system should be investigated. Angle is the special symbol to reflect the system transient stability, in the paper, the influence of angle rapidly changing behavior of DFIG and equivalent mechanical rotational inertias of wind-thermal-bundled system on synchronous generators angle transient stability characteristic are studied. To solve the problems of transient stability, an additional control strategy is proposed and is designed to become a control device prototype. Using real-time digital simulator (RTDS), the control device prototype is validated, simulation results show that the proposed additional control strategy can enhance the equivalent damping effect of DC system and DFIG to synchronous generators by changing the DC transmission power and adjusting the active power output of DFIG which can eliminate or reduce the imbalance of instant power in the transient process, as a result, the amplitude of angle fluctuation can be effectively inhibited, and the transient stability characteristic of wind-thermal-bundled power transmitted by AC/DC system is improved.

Key words: wind-thermal-bundled AC/DC rotational inertias additional control RTDS

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