A Data Driven Security Correction Method for Power Systems with UPFC  

作　　者：Qun Li Ningyu Zhang Jianhua Zhou Xinyao Zhu Peng Li 

机构地区：[1]Electric Power Research Institute of State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing,211103,China

出　　处：《Energy Engineering》2023年第6期1485-1502,共18页能源工程（英文）

基　　金：supported in part by Science and Technology Projects of Electric Power Research Institute of State Grid Jiangsu Electric Power Co.,Ltd.(J2021171).

摘　　要：The access of unified power flow controllers(UPFC)has changed the structure and operation mode of power grids all across the world,and it has brought severe challenges to the traditional real-time calculation of security correction based on traditionalmodels.Considering the limitation of computational efficiency regarding complex,physical models,a data-driven power system security correction method with UPFC is,in this paper,proposed.Based on the complex mapping relationship between the operation state data and the security correction strategy,a two-stage deep neural network(DNN)learning framework is proposed,which divides the offline training task of security correction into two stages:in the first stage,the stacked auto-encoder(SAE)classification model is established,and the node correction state(0/1)output based on the fault information;in the second stage,the DNN learningmodel is established,and the correction amount of each action node is obtained based on the action nodes output in the previous stage.In this paper,the UPFC demonstration project of NanjingWest Ring Network is taken as a case study to validate the proposed method.The results show that the proposed method can fully meet the real-time security correction time requirements of power grids,and avoid the inherent defects of the traditional model method without an iterative solution and can also provide reasonable security correction strategies for N-1 and N-2 faults.

关 键 词：MANUSCRIPT security correction data-driven deep neural network(DNN) unified power flow controller(UPFC) overload of transmission lines 

分 类 号：TM712[电气工程—电力系统及自动化]