摘要
新能源并网引发的宽频振荡严重威胁电网安全,实现宽频振荡源的在线定位并及时采取抑制措施以保证系统安全稳定尤为必要。为此,提出一种压缩采样和图卷积神经网络相结合的宽频振荡源定位方法,该方法首先在子站对时序的振荡信号进行稀疏采样,获得其低维观测序列,作为节点的时序信息,然后在主站融合系统的拓扑结构捕捉各节点的邻接关系,综合考虑系统振荡的时空特性,运用图卷积神经网络实现振荡源定位。最后利用宽频振荡样本集进行仿真验证,结果表明所提方法在量测数据含有噪声、传输数据缺失以及传输数据偏差的情况下都有较高的定位准确度。
The wide-band oscillation caused by the grid connection of new energy seriously threatens the security of the power grid.It is particularly necessary to realize the online location of the broadband oscillation source and take timely suppression measures to ensure the safety and stability of the system.In this paper,a broadband oscillator location method combining compression sampling and graph convolution neural network is proposed.This method firstly sparsely samples the time-series oscillation signal in the substation to obtain its low dimensional observation sequence as the time sequence information of the node,and then captures the adjacency of each node in the topology structure of the master station fu-sion system,comprehensively considers the time-space characteristics of the system oscillation,and uses graph convolution neural network to locate the oscillation disturbance sources.Finally,the broadband oscillation sample set is used for simulation verification.The results show that the proposed method has high positioning accuracy when the measurement data contains noise,the transmission data is missing and the transmission data is biased.
作者
王渝红
李晨鑫
周旭
朱玲俐
蒋奇良
郑宗生
WANG Yuhong;LI Chenxin;ZHOU Xu;ZHU Lingi;JIANG Qiiang;ZHENG Zongsheng(College of Electrical Engineering,Sichuan University,Chengdu 610065,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2024年第3期1080-1089,共10页
High Voltage Engineering
基金
国家重点研发计划(响应驱动的大电网稳定性智能增强分析与控制技术)(2021YFB2400800)
国家电网有限公司科技项目(响应驱动的大电网稳定性智能增强分析与控制技术)(SGSDDK00WJJS2200092)。
关键词
新能源发电
宽频振荡
振荡源定位
压缩感知
时空特性
图卷积神经网络
renewable energy
wide-band oscillation
oscillation source localization
compressed sensing
time-space characteristic
graph convolutional neural network
