基于主被动检测结合的配电网反孤岛装置研究

来源 :2017第十九届中国科协年会 | 被引量 : 0次 | 上传用户：jojochen812

【摘要】

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【作者】

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吕伟龙王瑞琪李超英李笋赵金勇李晓博殷红旭

【机构】

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山东鲁能智能技术有限公司,山东济南 250101;国网山东省电力公司,山东济南 250001

【出处】

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2017第十九届中国科协年会

【发表日期】

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2017年10期

【关键词】

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配电网反孤岛频率检测分布式能源

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分布式能源大量、多点接入配电网,导致局部孤岛问题日益严重,给配电网运行安全和检修安全提出严峻挑战.对此本文研宄了一种主被动检测结合的配电网反孤岛装置,基于静止无功发生器(SVG)的主动反孤岛装置可向配电网发出无功电流扰动,快速改变配电网上孤岛运行频率,配合用户侧安装的被动检测隔离装置,采用基于快速离散傅里叶变换算法(FFT)的频率检测技术准确检测配电网侧频率偏移,超限后自动跳开并网开关,隔离用户和配电网,不再完全依赖质量不一的并网逆变器.既能确保检修时配电网无孤岛存在,保障检修人员安全,又不影响用户自组网的自发自用.理论仿真和模拟平台的实验验证结果表明本文提出的主被动检测结合的理论方法有效性和配电网反孤岛装置有较强的可行性.

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基于主被动检测结合的配电网反孤岛装置研究

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