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基于响应轨迹和核心向量机的电力系统在线暂态稳定评估

DOI: 10.13334/j.0258-8013.pcsee.2014.19.018, PP. 3178-3186

Keywords: 暂态稳定评估,响应轨迹,核心向量机,人工智能,故障筛选

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Abstract:

针对现行调度需求提出基于响应轨迹和核心向量机的电力系统在线暂态稳定评估方法。首先将响应数据构建的原始特征集映射至高维特征空间,然后将暂态稳定评估问题定义为核心向量机中的最小闭包球问题,通过最优近似求解进行故障筛选和快速暂态稳定判别,且离线的训练和在线的匹配保证了暂态稳定评估过程能够满足在线计算的要求。10机39节点和某实际省级电网算例的计算结果表明,所提方法具有更低的时间和空间复杂度,并具有更高的评估精度。

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