跨区互联电网热稳定安全域边界近似方法

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摘要基于多元非线性回归理论,探究满足跨区域互联大电网联络断面支路N-1热稳定约束下的热稳定安全域边界（SRB）近似算法。构建多种电力系统热稳定安全域边界近似模型,引入模型拟合优度、总体显著性水平、变量显著性水平以及参数置信区间等概念,对所建模型进行全面、综合的评估,判定所提模型的可靠程度,确定合理的安全域边界近似模型。与实际区域互联大电网相结合,通过大量计算结果对所提模型验证、评估,确定可综合、全面反映安全域边界特性的近似模型;在此基础上提出并验证电力系统热稳定安全域边界近似的快速算法及多支路热稳约束下的电力系统热稳定安全域边界近似算法。最后将所提方法应用到实际电网中,构建满足实际跨区域互联大电网联络断面支路N-1约束的热稳定安全域。

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	姜涛
	贾宏杰
	姜懿郎
	孔祥玉
	陆宁

关键词 ：电力系统, N-1, 热稳定, 安全域, 非线性回归模型

Abstract：In this paper, approximating approaches are investigated for wide-area thermal security region boundary (SRB) in large-scale power system with N-1 criterion through multivariate nonlinear regression theory. Multivariate nonlinear regression theory is adopted to construct various multivariate nonlinear regression models for fitting SRB. Goodness of fit, significance level for model, significance level for variable and confidence intervals for regression coefficient are employed to comprehensively assess the reliability of the proposed approximating model and determine the appropriate model for fitting SRB. A realistic large-scale power system is utilized to validate and evaluate the various proposed models with massive scenarios, and then an appropriate model for fitting SRB is determined. With this appropriate model, a rapid algorithm for fitting SRB is developed, and the approximating approach for SRB with multiple N-1 constraints is also investigated. The proposed approach is further applied to the realistic large-scale power system to form a wide-area thermal security region for cross-section with multiple N-1 constraints. The results verify the proposed model.

Key words： Power system N-1 thermal stability security region nonlinear regression model

收稿日期: 2014-03-26 出版日期: 2016-04-28

PACS:

TM712

基金资助:国家自然科学基金（51277128、51377118）和南方电网科技项目（K-ZD2012-006）资助

通讯作者: 贾宏杰男,1973年生,博士,教授,博士生导师,主要研究方向为电力系统安全性与稳定性、配电系统规划、智能电网。E-mail: hjjia@tju.edu.cn E-mail: electricpowersys@163.com

作者简介: 姜涛男,1983年生,博士研究生,主要研究方向为电力系统安全性与稳定性、新能源集成。E-mail: electricpowersys@163.com

引用本文:

姜涛, 贾宏杰, 姜懿郎, 孔祥玉, 陆宁. 跨区互联电网热稳定安全域边界近似方法[J]. 电工技术学报, 2016, 31(8): 134-146. Jiang Tao, Jia Hongjie, Jiang Yilang, Kong Xiangyu, Lu Ning. Approximating Method of Wide Area Thermal Security Region Boundary in Bulk Power System. Transactions of China Electrotechnical Society, 2016, 31(8): 134-146.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I8/134

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