Impact of DC frequency modulation and modulation parameters on frequency characteristics of sending end in asynchronous interconnected power grid

被引：0
|
作者：
Gao Y. [1 ]
Ma N. [1 ]
Wang D. [1 ]
Sun N. [1 ]
Zhou X. [2 ]
Wu S. [3 ]
He P. [2 ]
机构：
[1] School of Electrical Engineering, Southwest Jiaotong University, Chengdu
[2] Electric Power Research Institute of Yunnan Power Grid Co., Ltd., Kunming
[3] Yunnan Electric Power Test & Research Institute(Group) Co., Ltd., Kunming
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2019年 / 39卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Asynchronous interconnection; Damping ratio; DC frequency limit Controller; DC power transmission; Frequency modulation;
D O I：
10.16081/j.epae.201909053
中图分类号：
学科分类号：
摘要：
Based on DC(Direct Current) load flow method, the analytical expression of frequency response in sending end and damping ratio in FM(Frequency Modulation) system under the impact of DC FM are deduced in consideration of the function of hydro-turbine governor and DC FM. Then the frequency dynamic characteristics of sending end are studied, when the DC FM and the FM parameters is involved. Finally, the impact of DC FM on frequency changing characteristics in sending end with hydroelectric generators is analyzed under the asynchronous grid interconnection condition. A test system of Chuxiong-Suidong DC transmission project is established, which the simulative result verifies that DC FM method can not only suppress the peak disturbance frequency of the sending end effectively, but also maintain the frequency stability of sending end after participating in hydropower system FM. © 2019, Electric Power Automation Equipment Press. All right reserved.
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页码：173 / 179
页数：6
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