基于鲁棒优化的交直流混合配电网供电能力评估

Power supply capability evaluation of AC/DC hybrid distribution network based on robust optimization

提出了一种适用于高比例可再生能源接入的中压交直流混合配电网供电能力评估方法。针对可再生能源出力的随机波动性,基于鲁棒优化思想构建了供电能力评估模型;针对运行安全被破坏的情况,提出了以配电网运行风险最小为目标、以交直流换流器等为调控对象的优化控制策略,充分挖掘系统的供电潜力。算例结果表明所提方法能够合理评估不确定环境下交直流混合配电网的供电能力,为配电网的安全运行提供参考。

A power supply capacity evaluation method for medium voltage AC/DC hybrid distribution network is presented. Based on the idea of robust optimization,a power supply capability evaluation model is constructed for the stochastic volatility of renewable energy. In view of the damage of operation safety,the optimal control strategy of AC/DC converter and other control equipments are proposed to fully exploit the power supply potential of the system. The results of the example show that the proposed method can reasonably evaluate the power supply capacity of the AC/DC hybrid distribution network in uncertain environment and can provide references for the safe operation of distribution network.