摘要
为了分析分布式发电(DG)接入配电网系统中,断路器(CB)额定值与过电流继电器(OCR)协调潜在的不利影响,利用超导故障限流器(SFCL)作为限制DG保护影响的装置。在介绍SFCL功能原理的基础上,以故障条件下SFCL阻抗最小化为目标,建立了CB和OCR相互协调的数学模型,使用IEEE 13节点分布测试系统对理论分析进行验证。仿真结果表明,应用SFCL是有效缓解DG对保护装置影响的可行方案,可提高配电网与DG的接口可靠性。
In order to analyze the potential adverse effects of the coordination of the rated value of the circuit breaker(CB)and the over-current relay(OCR)in the integration of distributed generation(DG)to distribution network system,the superconducting fault current limiter(SFCL)is used as a device of limiting the protection of the distribution network system by the DG.Based on the introduction of functional principles of SFCL and the minimization of impedance of SFCL under fault conditions,a mathematical model for the coordination of CB and OCR is established,and the theoretical analysis is verified by using IEEE 13-node distributed test system.The simulation results show that the proposed SFCL application is a feasible solution to effectively mitigate the influence of DG on the protection device,thereby improving the reliability of the interface between the distribution network and the DG.
作者
陶蕾
张楠
TAO Lei;ZHANG Nan(North China Power Engineering Co.,Ltd.of China Power Engineering Consulting Group,Beijing 100120,China)
出处
《电工技术》
2018年第21期69-71,123,共4页
Electric Engineering
