基于直流电流模糊预测控制的换相失败预防策略A DC Current Fuzzy Predictive Control Based Strategy to Decrease Probability of Commutation Failure
高楷;孙国强;卫志农;孙永辉;袁阳;
摘要(Abstract):
为抑制直流输电系统逆变器换相失败的发生,可采用直流电流预测控制方法,但直流电流预测设定值计算公式中参数k存在一定的随机性,为此采用模糊控制器控制直流电流预测设定值,并提出直流电流模糊预测控制策略。设置了控制时长T,并通过仿真测试选取合适的T值,克服了原有方法引起的系统电流恢复缓慢的不足。最后通过CIGRE HVDC标准模型的PSCAD-Matlab联合调用仿真进行算例分析,结果验证了所提方法的有效性。
关键词(KeyWords): 高压直流输电系统;换相失败;直流电流控制;模糊控制;预测控制;控制时长
基金项目(Foundation): 国家自然科学基金资助项目(51277052,51107032,61104045)~~
作者(Author): 高楷;孙国强;卫志农;孙永辉;袁阳;
Email:
DOI: 10.13335/j.1000-3673.pst.2015.09.019
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