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首页 > 过刊浏览>2018年第41卷第4期 >43-53. DOI:10.11835/j.issn.1000-582X.2018.04.006
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电网可靠性评估的反向等量配对负荷削减模型
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中图分类号:

TM732

基金项目:

国家自然科学基金资助项目（50977094）。


A reverse equivalent pairing load shedding model for assessing power system reliability
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    摘要:

    为提高电网可靠性评估效率，提出基于潮流灵敏度的反向等量配对负荷削减模型。基于基态潮流的灵敏度信息，推导了故障状态下潮流灵敏度的解析表达式，实现了潮流灵敏度矩阵的快速求解；根据过载支路潮流对节点注入功率的灵敏度，给出了发电机出力调整和负荷控制节点的选取规则；在此基础上，基于潮流灵敏度的反向等量配对思想，提出了配对节点组功率调节量的修正公式，有效消除了传统方法在调整过程中平衡节点机组出力越限以及正常支路反复过载的拉锯现象，也同时避免了反复潮流校验过程，提高了系统状态分析速度。通过对RBTS、IEEE-RTS79与IEEE-RTS96系统测试仿真，验证了该模型的有效性和快速性。

    Abstract:

    To improve the calculation efficiency of reliability assessment for power system, a load shedding model of reverse equivalent pairing based on power flow sensitivity is proposed. Firstly, based on the sensitivity in the system's base state, an analytical formula of the sensitivity in fault state is deduced, and thus a fast solution to the trend sensitivity matrix is achieved. Secondly, according to the power flow sensitivity of nodes injection power with respect to overload branches, the selection rule of control nodes for both generation and load nodes is presented. Furthermore, a model of reverse equivalent pairing adjustment is constructed based on this selection rule. A modified formula of power adjustment amount of pairing nodes group is also presented and it eliminates the see-saw phenomenon of overload for normal transmission lines in adjusting process and avoids the power flow verification in traditional methods, which makes the system has a higher state analysis speed. Finally, the effectiveness and fastness are verified by evaluating RBTS, IEEE-RTS79 and IEEE-RTS96 test systems.

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焦建林,元一平,赵渊,陆晓.电网可靠性评估的反向等量配对负荷削减模型[J].重庆大学学报,2018,41(4):43-53.

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