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电网技术  2011 

控制方式转换策略下的改进交直流系统潮流算法

, PP. 93-98

Keywords: 交直流系统,换流器,潮流计算,顺序求解法

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Abstract:

分析了换流器控制方式的转换策略。考虑在不同控制方式下交直流系统的相互影响,提出一种能够满足换流器控制方式转换策略的潮流计算方法。以顺序求解法为基础,对交流系统雅可比矩阵的特殊节点元素进行有效修正;基于换流器控制方式转换策略合理选取换流器关键状态变量,并将控制角余弦值和变压器分接头变比乘积作为一个状态变量处理,有效地避免了迭代过程中控制角余弦值或变压器分接头越限情况发生。该算法数学概念清晰、易于实现。仿真结果验证了该算法的准确性、快速性和可靠性。

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