针对高比例可再生能源接入引起“输-配网双向潮流”带来配电网电压管理难题,该文提出一种应对双向潮流的配电网电压管理策略。首先,挖掘变压器模型对配电网电压控制特性的影响机理,量化双向潮流下变压器高/低压母线电压控制特性。其次,为保证储能电池运行安全,基于电池实验数据,构建包含电池健康状态(state of health
So H)、荷电状态及功率状态耦合关系的储能系统调节可行域,并采用分段线性化方式建立实用控制域模型,实现不同SoH下对储能充放电能力的实时约束。最后,基于可再生能源的渗透水平差异,提出多层次协调电压控制策略,减少双向潮流下配电网电压越限。通过改进IEEE 33系统算例验证所提方法在不同可再生能源渗透率场景下提供有效电压管控措施的科学性和实用性。
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