电力系统保护与控制2024，Vol.52Issue(22)：47-58,12.DOI:10.19783/j.cnki.pspc.240332
基于电压与功率分布特性的新能源场站等值建模方法
Equivalent modeling method based on voltage and power distribution characteristics of a renewable energy station
摘要
Abstract
Equivalent modeling of a renewable energy station is the basis of simulation of a high proportion of renewables energy power system.For different working conditions and faults of the grid,the voltage distribution inside the renewable energy station is different.This leads to parts of units entering low-voltage ride-through(LVRT).There is difficulty in modeling the equivalence of a renewable energy station in different unit states.Thus an equivalence modeling method based on voltage and power distribution characteristics is proposed.First,based on a general structure,a topology representation method of stations based on a road matrix is proposed,and the topology conversion method of complex collector lines is analyzed.Secondly,a system road matrix-based calculation method for converter voltage during faults is proposed,and the effects of renewable energy power and unit transformer blocking on renewable energy units entering LVRT are analyzed.Finally,a collector line equivalence method that preserves the voltage distribution characteristics is proposed,and a renewable energy station equivalence modeling method based on the voltage and power distribution characteristics is formed.The accuracy of the proposed topology transformation method and the equivalence modeling method is verified by using a 10-node renewable energy station and an actual PV station example based on PSASP.关键词
新能源场站/电压分布特性/等值建模/道路矩阵/低电压穿越Key words
renewable energy station/voltage distribution characteristics/equivalence modeling/road matrix/LVRT引用本文复制引用
郑天悦,邓俊,王潇桐,夏楠,王彤..基于电压与功率分布特性的新能源场站等值建模方法[J].电力系统保护与控制,2024,52(22):47-58,12.基金项目
This work is supported by the Science and Technology Project of the Headquarters of State Grid Corporation of China(No.5100-202155481A-0-5-ZN). 国家电网公司总部科技项目资助(5100-202155481A-0-5-ZN) （No.5100-202155481A-0-5-ZN）
