Multi-Period Resilient Model for VSC-Based AC-DC HDS Considering Public-Safety Power Shutoff to Mitigate Wildfires  

作　　者：Zekai Wang Tao Ding Xiaosheng Zhang Chenggang Mu Pengwei Du Fangxing Li 

机构地区：[1]School of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,China [2]Electric Reliability Council of Texas,Austin,TX76574 USA [3]Department of Electrical Engineering and Computer Science,The University of Tennessee,Knoxville(UTK),TN37996,USA

出　　处：《CSEE Journal of Power and Energy Systems》2024年第2期821-833,共13页中国电机工程学会电力与能源系统学报（英文）

基　　金：supported in part by National Key Research and Development Program of China(2022YFA1004600);in part by the National Natural Science Foundation of China(51977166,52277123);in part by the Natural Science Foundation of Shaanxi Province(2022JC-19)。

摘　　要：This paper proposes a voltage source converter (VSC) -based AC-DC hybrid distribution system (HDS) resilient model to mitigate power outages caused by wildfires. Before a wildfire happens, the public-safety power shutoff (PSPS) strategy is applied to actively cut some vulnerable lines which may easily cause wildfires, and reinforce some lines that are connected to critical loads. To mitigate load shedding caused by active line disconnection in the PSPS strategy, network reconfiguration is applied before the wildfire occurrence. During the restoration period, repair crews (RCs) repair faulted lines, and network reconfiguration is also taken into consideration in the recovery strategy to pick up critical loads. Since there exists possible errors in the wildfire prediction, several different scenarios of wildfire occurrence have been taken into consideration, leading to the proposition of a stochastic multi-period resilient model for the VSC-based AC-DC HDS. To accelerate the computational performance, a progressive hedging algorithm has been applied to solve the stochastic model which can be written as a mixed-integer linear program. The proposed model is verified on a 106-bus AC-DC HDS under wildfire conditions, and the result shows the proposed model not only can improve the system resilience but also accelerate computational speed.

关 键 词：AC-DC hybrid distribution system restoration network reconfiguration progressive hedging public safety power shutoffs strategy resilience 

分 类 号：TM744[电气工程—电力系统及自动化]