Segment wise communication delay measurement for Smart Grid applications

Sayani, Mohammad Abdul Ghani; Singh, Bhavna; Coulter, J. C.; Tepe, Kemal

doi:10.1109/qbsc.2014.6841201

Cited by 5 publications

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fig. 7 (top) shows the response of the constituent sources with

t_{normald} = 20 ms

delay on the communication channel (comparable to practical system delays [33]). Filtered currents converge to a common constant value within 2 s. However, when the delay

t_{normald} = 200 ms

, the filtered current states shoot exponentially, as shown in Fig.…”

Section: Simulation Experimentsmentioning

confidence: 99%

Controlling DC microgrids in communities, buildings and data centers

2020

View full text Add to dashboard Cite

Microgrid technology is poised to transform the electricity industry. In the context of commercial/domestic buildings and data centers, where most loads are native direct current, DC microgrids are in fact a natural choice. Voltage stability and current/power-sharing between sources within a DC microgrid have been studied extensively in recent years. DC voltage droop control is known to have its drawbacks in that current or power-sharing is relatively poor. To eliminate this drawback, some have proposed to add a communication-based consensus control in addition to the primary voltage droop control loop. The current sharing performance is improved, however, the voltage deviation inherent in droop control requires a further, slower control to achieve voltage quality control. To overcome this complication, and reduction in response time, a low latency communicationbased control technique that achieves proportional current sharing without significant voltage deviations is proposed in this work. The stability of the proposed control technique is compared to state-of-the-art using eigenvalue and transient analyses. The negative impact of communication delays on proposed control is discussed in detail.

show abstract

“…Fig. 7 (top) shows the response of the constituent sources with

t_{normald} = 20 ms

delay on the communication channel (comparable to practical system delays [33]). Filtered currents converge to a common constant value within 2 s. However, when the delay

t_{normald} = 200 ms

, the filtered current states shoot exponentially, as shown in Fig.…”

Section: Simulation Experimentsmentioning

confidence: 99%

Controlling DC microgrids in communities, buildings and data centers

2020

View full text Add to dashboard Cite

show abstract

“…13, although the increase of communication delay slows down the distributed secondary controller, but the proposed method exhibits an acceptable performance for delays of up to 200ms. It should be pointed out that modern communication technologies exhibit a much smaller delay (around 10-40ms) [44].…”

Section: E Effect Of Communication Delaysmentioning

confidence: 99%

A GPS-Based Control Framework for Accurate Current Sharing and Power Quality Improvement in Microgrids

Golsorkhi

Savaghebi

et al. 2017

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

This paper proposes a novel hierarchical control strategy for improvement of load sharing and power quality in ac microgrids. This control framework is composed of a droop based controller at the primary level, and a combination of distributed power sharing and voltage conditioning schemes at the secondary level. The controllers in the primary level use GPS timing technology to synchronize the local reference angles. The voltage reference of each Distributed Generation (DG) is adjusted according to a voltage-current (V-I) droop characteristic to enable proper current and power sharing with a fast dynamic response. The droop coefficient, which acts as a virtual resistance is adaptively changed as a function of the peak current. This strategy not only simplifies the control design but also improves the current sharing accuracy at high loading conditions. The distributed power sharing scheme uses consensus protocol to ensure proportional sharing of average power. The voltage conditioning scheme produces compensation signals at fundamental and dominant harmonics to improve the voltage quality at a sensitive load bus. Experimental results are presented to validate the efficacy of the proposed method.

show abstract