2025年4月5日 周六
首页 > 过刊浏览>2021年第36卷第1期 >3-12. DOI:10.19781/j.issn.16739140.2021.01.001
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电—气互联下燃气状态对电力系统小干扰稳定的影响
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作者:
通讯作者:

马瑞(1971),男,博士,教授,主要从事电力系统稳定与控制、综合能源系统规划和运行等研究;Email:marui818@126.com

中图分类号:

TM93

基金项目:

国家自然科学基金(51977012)；国网江苏省电力有限公司科技项目(J2019047)


Research on the impact of gas status on small signal stability of power system for combined electricity and gas system
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    摘要:

    针对电—气互联下燃气压力和流量变化对电力系统小干扰稳定影响问题,建立考虑天然气传输延迟和天然气管道、燃气发电机组动态特性的电气互联系统小干扰稳定模型;提出了天然气传输延迟下燃气压力、流量变化与相关特征值的数学关系,从而揭示燃气状态对电力系统小干扰稳定影响机理;通过获取燃气变化影响相关振荡模态的参与因子,从而定量评估燃气流压力和流量对系统小干扰稳定的影响程度。天然气发电CHP接入无穷大电网和含2台CHP的改进IEEE 9节点系统算例仿真结果表明,该文提出的模型和方法正确有效。

    Abstract:

    Aiming at the problem of the impact of gas pressure and flow change on the small signal stability of power system for combined electricity and gas system, a small signal stability model of combined electricity and gas system considering the gas transmission delay, dynamic characteristics of natural gas pipeline and gas generator set is established. Firstly, the mathematical relationship of gas pressure changes to relevant eigenvalues and flow changes to relevant eigenvalues is derived under the delay of gas transmission to reveal the mechanism of the influence of gas status on the small signal stability of power system. Then the participation factor method of gas changes related oscillation mode is proposed. Through developing the participation factors of gas changes that affect the relevant oscillating modes, it is possible to quantitatively evaluate the influence of gas flow pressure and flow on the small signal stability of the system.The simulation results of CHP driven by natural gas access infinity system and the improved IEEE 9 node system with two CHPs show that the proposed model and method are correct and effective.

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引用本文

马瑞,杨汉,吕振华,等.电—气互联下燃气状态对电力系统小干扰稳定的影响[J].电力科学与技术学报,2021,36(1):3-12.
MA Rui, YANG Han, LV Zhenhua, et al. Research on the impact of gas status on small signal stability of power system for combined electricity and gas system[J]. Journal of Electric Power Science and Technology,2021,36(1):3-12.

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