计及电流潮流控制器的直流电网潮流计算  

Power flow calculation for DC power grid considering current flow controller

作　　者：甄浩 王谱宇 孙晓蕾 杨伟[1] Zhen Hao;Wang Puyu;Sun Xiaolei;Yang Wei(School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学自动化学院,南京210094

出　　处：《电测与仪表》2022年第3期66-74,共9页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(51807091);江苏省自然科学基金资助项目(BK20180478);中国博士后科学基金面上资助项目(2019M661846)。

摘　　要：电流潮流控制器(Current Flow Controller,CFC)可以增加直流电网潮流控制自由度,实现直流电网潮流优化分布,但也使得原始潮流算法对于加装控制器后的直流电网不再完全适用。基于等效功率注入模型和联立求解法,文中提出了一种特定潮流控制目标下,计及CFC的直流电网潮流算法。将CFC对被控支路潮流的调配作用转移到控制器安装支路节点处;将装设CFC引入的附加约束方程组与直流潮流计算约束方程组联立求解,保留了牛顿-拉夫逊法的二次收敛特性,提高了运算效率,保证了运算精度。基于PSCAD/EMTDC仿真平台建立的多端直流环网潮流计算,与所提出的基于等效功率注入模型潮流计算结果进行对比验证,验证了所提方法的有效性和准确性。The current flow controller(CFC)can increase the power flow freedom of the DC power grid,and achieve the optimal distribution of the DC power grid flow,while it also makes the original power flow algorithm not fully applicable to DC power grid.Based on the equivalent power injection model and simultaneous solution method,a power flow algorithm for DC power grid considering CFC for specific power flow control target is proposed in this paper.The role of CFC in regulating the power flow of the controlled branch is transferred to the node where the controller is installed;the additional constrained equations introduced by CFC are solved in conjunction with the constrained equations of DC power flow calculation,which retains the quadratic convergence of Newton-Raphson method,improves the operation efficiency and ensures the operation accuracy.The power flow calculation of multi-terminal DC loop network based on PSCAD/EMTDC simulation platform is compared with the proposed power flow calculation based on equivalent power injection model.The correctness and accuracy of the proposed method are verified.

关 键 词：直流电网潮流计算 电流潮流控制器 等效功率注入模型 联立求解法 

分 类 号：TM711[电气工程—电力系统及自动化]