计及SOP损耗的交直流配电网三相区间状态估计  

Three-phase interval state estimation of AC-DC distribution network considering SOP loss

作　　者：秦一钧 陈骁龙 倪诚 倪良华[1] 吕干云[1] QIN Yi-jun;CHEN Xiao-long;NI Cheng;NI Liang-hua;LV Gan-yun(School of Electrical Power Engineering,Nanjing Institute of Technology,Nanjing 211167,China;Guodian Nanjing Automation Co.,Ltd.,Nanjing 210003,China)

机构地区：[1]南京工程学院电力工程学院,南京211167 [2]国电南京自动化股份有限公司,南京210003

出　　处：《信息技术》2024年第3期28-34,共7页Information Technology

基　　金：江苏“六大人才高峰”创新团队(TD-XNY004);江苏省高等学校自然科学研究重大项目(19KJA510052)。

摘　　要：随着分布式电源及智能软开关(SOP)等新型设备投入配电网运行,需要对交直流配电网进行精确的状态估计。首先构建了交直流配电网的区间状态估计模型,考虑三相不对称性与交直流之间的耦合;其次,为计及SOP的损耗,增设SOP两侧支路电流作为状态变量,完善了区间状态估计中的雅克比矩阵;最后采用基于迭代运算的线性规划方法进行区间状态估计。在修改IEEE33节点算例上进行仿真,结果表明所提方法能保证计及SOP损耗的状态估计结果的准确性。As distributed power supply and Soft Open Points(SOP)and other new equipment are put into distribution network operation,it is necessary to accurately estimate the status of AC and DC distribution network.Firstly,the interval state estimation model of AC-DC distribution network is constructed considering the coupling between AC-DC and three-phase asymmetry.Secondly,in order to account for the loss of SOP,the current at both sides of SOP is added as state variable to improve the Jacobian matrix in interval state estimation.Finally,linear programming method based on iterative operation is used to estimate interval state.The simulation results on modified IEEE33 node show that the proposed method can guarantee the accuracy of state estimation with SOP loss.

关 键 词：交直流混合配电网 区间状态估计 三相不对称 智能软开关 传输功率损耗 

分 类 号：TM744[电气工程—电力系统及自动化]