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计及新能源幅相特性的新型多馈入短路比指标

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  • 国家科技期刊平台
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  • NSTL
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为了合理评估高比例新能源并网的多馈入高压直流输电(multi-infeed HVDC，MIDC)系统电压支撑能力，该文首先分析 MIDC 系统结构特点，随后基于多馈入短路比(multi-infeed short circuit ratio，MISCR)指标，并结合新能源短路电流幅值和相位随机端电压变化的特性(以下简称"幅相特性")，提出多馈入暂态短路比(multi-infeed transient short circuit ratio，MITSCR)指标;其次，根据国家标准的要求分析以双馈风机(doubly-fed induction generator，DFIG)为代表的新能源在不同控制模式下的幅相特性，并通过MITSCR指标分析DFIG接入对MIDC系统节点电压支撑能力影响;最后，利用PSACD/EMTDC软件进行时域仿真分析，结果表明，MITSCR指标能有效表征节点的电压支撑能力，验证了该指标的有效性与优越性。
A New Multi-infeed Short Circuit Ratio Index Taking Into Account the Amplitude and Phase Characteristics of New Energy
In order to properly evaluate the voltage support capability of the multi-infeed HVDC(MIDC)system with high proportion of new energy access,this paper first analyzes the structural characteristics of the MIDC system,and based on the multi-infeed short circuit ratio(MISCR)index and the characteristics of the amplitude and phase variation of the short-circuit current(hereinafter referred to as"amplitude and phase characteristics")caused by new energy,a new index called multi-infeed transient short circuit ratio(MITSCR)is proposed.Then,adhering to the requirements stipulated in the National Standard of the People's Republic of China,the amplitude and phase characteristics of new energy represented by doubly-fed induction generators(DFIG)under different control modes are analyzed,and the impact of DFIG access on the node's voltage support capability of the MIDC system is also analyzed through the MITSCR index.Finally,time-domain simulation analysis is carried out using the PSACD/EMTDC software,and the results show that the MITSCR index can effectively characterize the node's voltage support capability,verifying the effectiveness and superiority of the index.

multi-infeed high voltage direct currentnew energyamplitude and phase characteristicsvoltage support abilitymulti-infeed transient short circuit ratio(MITSCR)

黄启元、曹善康、吴宇奇、林湘宁、魏繁荣、杨丹、崔挺

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强电磁工程与新技术国家重点实验室(华中科技大学),湖北省 武汉市 430074

国网湖南省电力有限公司电力科学研究院,湖南省 长沙市 410007

多馈入直流输电 新能源 幅相特性 电压支撑能力 多馈入暂态短路比

国家自然科学基金企业创新发展联合基金项目国网湖南省电力有限公司科技项目

U22B201065216A021002U

2024

10.13334/j.0258-8013.pcsee.230369

中国电机工程学报
中国电机工程学会

中国电机工程学报

CSTPCD北大核心
影响因子：2.712
ISSN：0258-8013
年,卷(期)：2024.44(15)