电力系统自动化2016，Vol.40Issue(6)：42-48,7.DOI:10.7500/AEPS20150310015
基于电压控制特性的电压源型多端直流/交流系统潮流求解
Power Flow Solving of VSC Multi-terminal DC/AC System Based on Voltage Control Characteristics
摘要
Abstract
The voltage source converter based high voltage direct current (VSC-HVDC) transmission technology has good application prospects owing to its excellent controllability,voltage stability and good adaptability to power supply for load center,wind power accommodation,and power transmission among islands.The present research on power flow of VSC-HVDC system is mostly based on constant power control mode without considering the practical converter voltage control characteristics.In order to more accurately reflect the voltage control characteristics of VSC in the actual power grid,a voltage control model based on VSC is developed.As well,converter loss,AC filter,and converter capacity limit are considered in the power flow model.And a general power flow algorithm is proposed for power flow of the VSC based multi-terminal DC/AC system.Some cases with changed DC grid power injection,N -1 contingency and multi-terminal DC/AC system,are built and analyzed.The case analysis indicates that the power flow algorithm is able to reflect the voltage control ability of DC converters,while verifying the effectiveness,rationality and algorithm rapidity based on voltage control characteristics.关键词
电压源型换流器/多端直流/电压裕度控制/电压降控制/多端直流/交流潮流Key words
voltage source converter(VSC)/multi-terminal DC/voltage margin control/voltage drop control/multi-terminal DC/AC power flow引用本文复制引用
杨堤,程浩忠,姚良忠,曾平良..基于电压控制特性的电压源型多端直流/交流系统潮流求解[J].电力系统自动化,2016,40(6):42-48,7.基金项目
国家重点基础研究发展计划(973计划)资助项目(2014CB23903)。This work is supported by National Basic Research Program of China(973 Program)(No.2014CB23903) （973计划）
