A real case application of ROCOF and vector surge relays for anti-islanding protection of distributed energy resources

A. Nassif, Colin Madsen
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引用次数: 8

Abstract

This paper presents a case study where a Canadian utility has implemented passive anti-islanding elements as an alternative to Direct Transfer Trip to interconnect a customer-owned generator. This acceptance was done on an exceptional basis and many challenges were faced, including characterizing analytically the performance of these protection elements, developing settings and coordinating them with customer-owned protective relays. The analytical tools developed during this case study are useful to both predict the rate of frequency change and also to determine when using these passive elements are a viable and reliable alternative to active anti-islanding protection. The operation of the system under study was verified with timedomain simulations and after one year of real life operation, this system has been shown to be stable, safe and reliable.
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ROCOF和矢量浪涌继电器在分布式能源防孤岛保护中的实际应用
本文介绍了一个案例研究,其中加拿大公用事业公司实施了被动防孤岛元件,作为直接传输跳闸的替代方案,以互连客户拥有的发电机。这次验收是在特殊的基础上完成的,面临着许多挑战,包括分析这些保护元件的性能特征,开发设置并与客户拥有的保护继电器进行协调。在本案例研究中开发的分析工具既可用于预测频率变化率,也可用于确定何时使用这些无源元件作为主动防孤岛保护的可行和可靠的替代方案。通过时域仿真验证了所研究系统的运行情况,经过一年的实际运行,系统稳定、安全、可靠。
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