Research of weak sending-end coupling characteristics for bundled wind-thermal power transmission of UHVDC project

被引：0
|
作者：
Wu P. [1 ]
Xu S. [1 ]
Zhao B. [1 ]
Chen H. [1 ]
机构：
[1] China Electric Power Research Institute, Beijing
来源：
| 1600年 / Electric Power Automation Equipment Press卷 / 36期
关键词：
Bundled wind-thermal power; DC power transmission; Rigid DC and weak AC; Stability; UHV power transmission; Wind power proportion;
D O I：
10.16081/j.issn.1006-6047.2016.01.009
中图分类号：
学科分类号：
摘要：
There are various safety and stability problems in the sending-end network of Hami-Zhengzhou UHVDC system of the first large-scale bundled wind-thermal power transmission project in China. The operating characteristics of HVDC are analyzed and the operational conditions of both grid-connecting and islanding modes in the transition period are proposed. The imbalanced power distribution in weak sending- end network is studied for the establishment of control strategy, which ensures the post-fault safety and stability of important lines. The coupling characteristics between UHVDC and 750 kV AC grid is studied, which shows that the successive putting into operation of auxiliary thermal units will change the stability problem of Tulufan-Hami section from dynamic stability to transient stability and there is large voltage fluctuation and transient stability problem in both channels, and the power transmission capacities of UHVDC and two channels are given. The effect of Hami-Zhengzhou UHVDC on the frequency stability of Qinghai-Tibet DC and Tibet Power Grid is researched and the voltage fluctuation induced by DC faults is studied for different wind-thermal power ratios, which provides reference to the operation and control of Northwest China Grid. © 2016, Electric Power Automation Equipment Press. All right reserved.
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页码：60 / 66
页数：6
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