智能变电站二次系统可靠性建模及分析

李书山; 刘宏君; 吴忠福; 李进; 胡秀英; 刘春娣

李书山,刘宏君,吴忠福,李进,胡秀英,刘春娣.智能变电站二次系统可靠性建模及分析[J].电测与仪表,2020,57(21):61-69.
Li Shushan,Liu Hongjun,11,2222,胡秀英,刘春娣.Reliability Modeling and Analysis of Secondary System in Smart Substation[J].Electrical Measurement & Instrumentation,2020,57(21):61-69.

智能变电站二次系统可靠性建模及分析

Reliability Modeling and Analysis of Secondary System in Smart Substation

DOI：10.19753/j.issn1001-1390.2020.21.009

中文关键词: 智能变电站,二次系统,可靠性研究,邻接矩阵

英文关键词:smart substation, secondary system, reliability study, adjacent matrix

基金项目:

作者中文名	作者英文名	单位
李书山	Li Shushan	青海省电力设计院
刘宏君	Liu Hongjun	长园深瑞继保自动化有限公司
吴忠福	11	111
李进	2222	2222
胡秀英	胡秀英
刘春娣	刘春娣

摘要点击次数: 1427

中文摘要:

智能变电站作为智能电网的重要组成部分,既是能量传输分配的节点,也是各类信息的收发节点,发挥着不可替代的重要作用。其中二次系统是智能变电站的中枢神经,在实现测量、保护、控制等基本功能的同时,还兼具许多智能化的高级应用功能,二次系统的正常工作是电网安全稳定运行的重要保证。鉴于此,开展了智能变电站二次系统的可靠性研究。通过对智能变电站二次系统的结构进行剖析,建立了基于邻接矩阵的智能变电站二次系统可靠性模型,通过矩阵运算求得保护的采样跳闸路径,据此绘制出可靠性框图,进而计算保护的整体稳态可用率。其次,将上述模型应用在“网采网跳”、“网采直跳”、“直采网跳”、“直采直跳”等不同采样跳闸方式,以主变保护为例给出了具体的计算结果。最后,运用该模型分析了就地化主变保护的可靠性。结果表明,就地化保护的稳态可用率与常规智能站相比有显著提高。

英文摘要:

As an important part of the smart grid, the smart substation is not only the node of energy transmission and distribution, but also the sending and receiving node of various kinds of information, playing an irreplaceable important role. The secondary system is the central nervous system of the smart substation. While realizing the basic functions of measurement, protection and control, it also has many intelligent advanced application functions. The normal operation of the secondary system is an important guarantee for the safe and stable operation of the power grid. In view of this, the reliability research of the secondary system of smart substation was carried out. Based on the analysis of the structure of the secondary system of the smart substation, the reliability model of the secondary system of the smart substation based on the adjacency matrix is established. The protected sampling trip path is obtained by matrix operation. Based on this, the reliability block diagram is drawn and the protection is calculated. Overall steady state availability. Secondly, the above model is applied to different sampling trip modes such as “network mining network jump”, “network mining straight jump”, “direct mining network jump”, “straight mining straight jump”, etc., taking the main transformer protection as an example to give specific Calculation results. Finally, the model is used to analyze the reliability of localization main transformer protection. The results show that the steady state availability of localization protection is significantly improved compared with conventional smart stations.

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