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1.清华大学电机工程与应用电子技术系,北京市 100084
2.国网河南省电力公司,河南省郑州市 450018
林银鸿(1996—),男,博士研究生,主要研究方向:电力系统电压稳定与优化控制。E-mail:1821882805@qq.com
王彬(1984—),男,通信作者,博士,副研究员,主要研究方向:智能电网能量管理、新能源接入调度控制和电网无功电压优化控制。E-mail:wb1984@tsinghua.edu.cn
葛怀畅(1990—),男,博士,主要研究方向:自动电压控制、电压稳定。E-mail:chh_gabriel@163.com
收稿日期:2020-04-26,
修回日期:2020-10-11,
网络出版日期:2021-01-05,
纸质出版日期:2021-06-25
移动端阅览
林银鸿,王彬,葛怀畅等.电网在线暂态电压安全分析的降维方法[J].电力系统自动化,2021,45(12):109-118.
LIN Yinhong,WANG Bin,GE Huaichang,et al.Dimension Reduction Method for Online Transient Voltage Security Analysis of Power Grid[J].Automation of Electric Power Systems,2021,45(12):109-118.
林银鸿,王彬,葛怀畅等.电网在线暂态电压安全分析的降维方法[J].电力系统自动化,2021,45(12):109-118. DOI: 10.7500/AEPS20200426005.
LIN Yinhong,WANG Bin,GE Huaichang,et al.Dimension Reduction Method for Online Transient Voltage Security Analysis of Power Grid[J].Automation of Electric Power Systems,2021,45(12):109-118. DOI: 10.7500/AEPS20200426005.
近年来,随着中国可再生能源的发展以及交直流混联电网的形成,电力系统暂态电压安全问题越来越突出。对于大电网进行在线暂态电压安全分析十分必要,但因存在维数灾问题导致其在线应用困难。关键挑战在于需要处理高维电压时序轨迹(时间维)、大量预想故障(故障维),以及众多节点和无功设备(空间维)。传统的无功电压分区方法无法应对以上挑战。为此,提出了一种面向暂态电压安全分析的降维方法,包括基于高维电压时序轨迹的暂态电压安全性量化评估方法、面向大量预想故障的代表性严重故障筛选方法,以及故障相依的动态电压分区方法。这3种关键方法分别从时间、故障和空间维度对原问题进行降维。基于IEEE 39节点系统和实际电网模型的仿真验证了所提方法的可行性和有效性。
In recent years
with the development of renewable energy and the formation of AC/DC hybrid power grids in China
the transient voltage security problem of power systems has become more and more prominent. It is very necessary to conduct online transient voltage security analysis for large power grids. However
due to the dimensionality disaster of this problem
the online application is difficult. The key challenges are high-dimensional voltage time trajectories (time dimension)
a large number of preconceived contingencies (fault dimension)
and numerous nodes and reactive power devices (space dimension). The traditional reactive voltage partitioning method cannot settle the above challenges. Therefore
a dimension reduction method for transient voltage security analysis is proposed
including a quantitative evaluation method for transient voltage security based on high-dimensional voltage time trajectories
a representative severe contingency screening method for a large number of preconceived contingencies and a fault-dependent dynamic voltage partitioning method. These three key methods reduce the dimension of the original problem from the time
fault and space dimensions respectively. Simulation based on the IEEE 39-bus system and an actual power grid verifies the feasibility and effectiveness of the proposed method.
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