Communication requirements for hierarchical control of volt-VAr function for steady-state voltage

J. Quiroz, M. Reno, O. Lavrova, R. Byrne
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引用次数: 19

Abstract

A hierarchical control algorithm was developed to utilize photovoltaic system advanced inverter volt-VAr functions to provide distribution system voltage regulation and to mitigate 10-minute average voltages outside of ANSI Range A (0.95–1.05 pu). As with any hierarchical control strategy, the success of the control requires a sufficiently fast and reliable communication infrastructure. The communication requirements for voltage regulation were tested by varying the interval at which the controller monitors and dispatches commands and evaluating the effectiveness to mitigate distribution system over-voltages. The control strategy was demonstrated to perform well for communication intervals equal to the 10-minute ANSI metric definition or faster. The communication reliability impacted the controller performance at levels of 99% and below, depending on the communication interval, where an 8-minute communication interval could be unsuccessful with an 80% reliability. The communication delay, up to 20 seconds, was too small to have an impact on the effectiveness of the communication-based hierarchical voltage control.
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稳态电压伏安函数分级控制的通信要求
开发了一种分层控制算法,利用光伏系统先进的逆变器电压- var功能来提供配电系统电压调节,并减轻超出ANSI范围A (0.95-1.05 pu)的10分钟平均电压。与任何分层控制策略一样,控制的成功需要足够快速和可靠的通信基础设施。通过改变控制器监控和调度命令的间隔,测试了电压调节的通信要求,并评估了缓解配电系统过电压的有效性。控制策略被证明在等于10分钟ANSI度量定义或更快的通信间隔中表现良好。通信可靠性对控制器性能的影响在99%及以下,具体取决于通信间隔,其中8分钟的通信间隔可能在80%的可靠性下不成功。通信延迟(最多20秒)太小,不会影响基于通信的分层电压控制的有效性。
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