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首页> 外文会议>2014 International Conference on Power System Technology: Towards Green, Efficient and Smart Power System >The power flow optimization methods and practice for AC/DC paralleled transmission channels in an ultra-large-scale grid
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The power flow optimization methods and practice for AC/DC paralleled transmission channels in an ultra-large-scale grid

机译：超大型电网交流/直流并联传输通道的潮流优化方法与实践

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摘要

An optimal power flow model for multi-circuit AC and DC paralleled transmission lines is built in this research. Practical approaches are presented to address the variation range of generators' output, constraints of power spinning reserve, constraints of AC channel power, discrete variables processing induced by reactive power equipment switching, as well as verification of optimization results etc. In addition, the sensitivity analysis on the influence of DC channel transmission power, generators' out, reactive power equipment's switching and other control variables on the optimization results is also provided. After the optimal allocation is applied to a transmission section with 5 HVDC and 4 HVAC lines in the China Southern Power Grid, the active power loss of the whole Grid has been reduced by 352 MW at most, and the loss reduction effect is truly remarkable.
机译：本研究建立了多回路交流和直流并联输电线路的最优潮流模型。提出了一些实用的方法来解决发电机输出的变化范围，功率旋转储备的约束，交流通道功率的约束，无功设备切换引起的离散变量处理以及优化结果的验证等问题。此外，还要对灵敏度进行验证。分析了直流通道输电功率，发电机出线，无功设备切换等控制变量对优化结果的影响。将最佳分配应用于南方电网的5条HVDC和4条HVAC线路的输电段后，整个电网的有功功率损耗最多可减少352 MW，损耗的降低效果确实是显着的。

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