Broadcast communication by system frequency modulation

P. Douglass, S. You, K. Heussen
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引用次数: 1

Abstract

Load controllers available today can measure AC system frequency and react to frequency deviations. A system operator can communicate to frequency sensitive loads by changing the set-points of the system's dispatchable frequency regulation resources. Explicitly signaling system state by generating off-nominal system frequency values is a novel narrowband broadcast communications channel between system operators and frequency sensitive distributed energy resources (FS-DER). The feasibility of the proposed system is evaluated on an existing island power system in Denmark. This study shows that within standard frequency quality constraints, 4 distinct symbols are feasible on the island. However, the overarching imperative of system stability prevents the symbols from having arbitrary meanings. Higher frequency values must translate into greater consumption from loads, and vice versa. Within these constraints, the proposed system would allow operators to dispatch FS-DER in a robust manner, without using an external digital control channel. By dispatching FS-DER, their well known role as a power balancing resource can be expanded to include energy balancing services.
采用系统调频的广播通信
目前可用的负载控制器可以测量交流系统频率并对频率偏差做出反应。系统操作员可以通过改变系统可调度频率调节资源的设定点与频率敏感负载通信。通过产生非标称系统频率值来显式发送系统状态信号,是一种新的窄带广播通信方式,在系统操作者和频率敏感分布式能量资源(FS-DER)之间进行通信。在丹麦现有的一个岛屿电力系统上评估了拟议系统的可行性。本研究表明,在标准频率质量约束下,岛上有4种不同的符号是可行的。然而,系统稳定性的首要要求阻止符号具有任意的含义。更高的频率值必须转化为负载的更大消耗,反之亦然。在这些限制条件下,拟议的系统将允许运营商以稳健的方式调度FS-DER,而无需使用外部数字控制通道。通过调度FS-DER,它们作为电力平衡资源的作用可以扩展到包括能量平衡服务。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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