基于结构和概率重要度的系统关键线路辨识

doi:10.3969/j.issn.1000-7229.2015.12.015

电力建设 ›› 2015, Vol. 36 ›› Issue (12): 97-101.doi: 10.3969/j.issn.1000-7229.2015.12.015

基于结构和概率重要度的系统关键线路辨识

何海丹，贾燕冰，刘睿琼

太原理工大学电气与动力工程学院，太原市030024

出版日期:2015-12-01
作者简介:何海丹（1988），女，硕士，研究方向为电力系统稳定性；贾燕冰（1980），女，博士，副教授，研究方向为电力系统可靠性及风险评估；刘睿琼（1990），女，硕士，研究方向为电力系统稳定性。
基金资助:
高等学校博士学科点专项科研基金（20121402120007）；山西省煤基重点科技攻关项目（MD2014-06）。

Key Line Identification Based on Structure and Probability Importance

HE Haidan, JIA Yanbing, LIU Ruiqiong

College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Online:2015-12-01
Supported by:
Project supported by Special Scientific and Research Funds for Doctoral Speciality of Institution of Higher Learning（20121402120007）.

摘要/Abstract

摘要：

确定电力系统中的关键输电线路能有效提高系统稳定性，为此提出线路综合重要度指标。该方法仅利用系统基本参数，克服以往介数指标的计算需要系统当前运行方式和潮流分布的弊端。该指标从系统结构和概率两方面辨识系统的关键线路。根据功率分布理论提出输电线路功率分布介数，作为系统结构重要度指标，其考虑了与发电机和负荷直连节点的线路权重，能反映输电线路在各个发电-负荷对间功率传输中被利用程度。结合线路故障率风险指标提出支路综合重要度指标。根据IEEE　39节点标准算例进行仿真分析，利用得出的数据和用其他判据得出的数据进行比较，验证所提方法的有效性。

关键词: 功率分布介数, 概率重要度, 结构重要度, 综合重要度, 关键线路辨识

Abstract:

The determination of key transmission line in power system can effectively improve the stability of the system. Therefore, this paper proposes the integrated importance indicators of lines. This method only uses the basic parameters of the system, and can overcome the disadvantage that the calculation of betweeness indicator needs the current operating mode of the system and the distribution of the power flow. The indicators can identify the key lines of the system from two aspects of the system structure and probability. According to power distribution theory, the power distribution betweeness of transmission lines was proposed as the structure importance index of the system, which took into account the line weight of directly connection node between generator and load, and could reflect the utilization degree of transmission lines in each generation and load of power transmission. And then combining with the risk index of line failure rate, the integrated importance index of the branch was put forward. The simulation analysis was carried out according to the standard examples of IEEE 39-bus, and the data obtained by the method were compared with those obtained by other criteria to verify the effectiveness of the proposed method.

Key words: flow distribution betweeness, probability importance, structure importance, integrated importance, key line identification

中图分类号:

TM 744

何海丹，贾燕冰，刘睿琼. 基于结构和概率重要度的系统关键线路辨识[J]. 电力建设, 2015, 36(12): 97-101.

HE Haidan, JIA Yanbing, LIU Ruiqiong. Key Line Identification Based on Structure and Probability Importance[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(12): 97-101.

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基于结构和概率重要度的系统关键线路辨识

Key Line Identification Based on Structure and Probability Importance

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