【摘要】 基于分散式风电并网,提出3种并网模式,即通过35 k V专线接入110 k V变电站35 k V母线侧(模式1);通过35 k V专线接入35 k V变电站35 k V母线侧(模式2);分散式风电T接入35 k V线路(模式3)。利用电力系统综合分析程序(PSASP)软件搭建了一个实际配电网的电网模型,并分别就这3种并网模式进行仿真研究。通过对分散式风电并网对电网带来的潮流分布、短路电流变化和网损影响的研究,表明3种分散式风电并网模式都是可行的方案,得到并网模式1对并网变电站潮流流向和电压质量的影响最小,对短路电流改变最小,短路容量比最小,同时并网模式1对电网的网损最小。对比分析给出模式1是3种并网模式中最优的。更多还原

【Abstract】 In the distribution network connected distributed wind power,the paper puts forward three kinds of grid connected modes,namely,through the 35 k V special line it accesses 35 k V bus side of 110 k V substation,through the35 k V special line it accesses 35 k V bus side of 35 k V substation,by distributed wind power T it accesses 35 k V line.By use of power system analysis software package( PSASP),we built a real distribution network mode,and completed simulation research for these three kinds of grid connected modes,respectively. The study of distributed wind power grid connected modes of the power flow,the changes of short-circuit current and loss effects on power grid shows that three kinds of distributed wind power grid connected modes are all feasible schemes The influence of the first grid connected mode’s flows and voltage quality is minimal,the short-circuit current change is the least,and short-circuit capacity ratio is minimal,at the same time,this grid pattern can reduce the maximal magnitude of network loss. Comparative analysis shows that the 35 k V special line accessing 35 k V bus side of 110 k V substation is the best grid connected mode. This paper can provide reference to planning design and further research of distributed wind power.更多还原