Edge-of-Grid Voltage Control: Device Modeling, Strategic Placement, and Application Considerations

Padullaparti, Harsha; Chirapongsananurak, Pisitpol; Santoso, Surya; Taylor, Jason

doi:10.1109/jpets.2017.2750479

Cited by 15 publications

(7 citation statements)

References 8 publications

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“…Therefore, the selection of the most appropriate locations for the device placement helps achieving the desired PV hosting improvements with a low number of devices. In this work, an iterative placement method, similar to the technique proposed in [7], [12] is used. The steps involved in the iterative device placement method are shown in Fig.…”

Section: A Iterative Device Placement Methodsmentioning

confidence: 99%

“…The LV-DSTATCOM is emulated using the voltage controlled generator model available in OpenDSS. The device voltage regulation characteristics can be plotted by connecting a generator object (LV-DSTATCOM) to the service transformer secondary node in a small test circuit as done in [4], [7]. The device, rated for 10 kvar, is set to regulate the service transformer secondary node voltage in the test circuit at 1 pu (240 V) while varying the node voltage.…”

Section: Low-voltage Dstatcom Characteristicsmentioning

confidence: 99%

“…They are available in sizes up to 50 kVA and are designed to operate at 240 V. One of these devices functions like a static var compensator (SVC) [4], [5] by supplying the required amount of capacitive reactive power to regulate the voltage at its terminals to a preset voltage setpoint. With an architecture similar to that of a unified power flow controller, another low-voltage FACTS device [6], [7] can perform both voltage regulation and power factor correction. The PV smart inverter can also help regulate the secondary circuit voltages in the distribution grid through reactive power control.…”

Section: Introductionmentioning

confidence: 99%

“…The controlled reactive power absorption can help in reducing the overvoltages on the secondary-wire due to high levels of PV generation. Although several studies reported the benefits of voltage regulation by secondary-side voltage control [6], [7], they have not focused on increasing the PV hosting capacity. In this paper, the effectiveness of LV-DSTATCOMs in increasing the PV hosting capacity of distribution circuits is addressed.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Increasing Feeder PV Hosting Capacity by Regulating Secondary Circuit Voltages

Padullaparti

Jothibasu

Santoso

et al. 2018

2018 IEEE Power &Amp; Energy Society General Meeting (PESGM)

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Voltage rise is one of the major concerns that limits the photovoltaic (PV) hosting capacity or the maximum amount of PV generation that a distribution circuit can accommodate. This paper examines the effectiveness of low-voltage distribution static compensators (LV-DSTATCOMs) in increasing the PV hosting capacity of distribution circuits by mitigating voltage rise. Stochastic analysis framework is used to determine the PV hosting capacity while an iterative placement technique is used to identify effective device locations. To provide insights on the optimal device size, number, and control settings, sensitivity analysis is carried out. The results show that, with appropriate size and control settings, installation of few LV-DSTATCOMs in a distribution circuit can significantly increase its PV hosting capacity. For the circuit under consideration, a set of 23 devices has increased the PV hosting capacity from 15% to 100% of the median day time peak load.

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Section: A Iterative Device Placement Methodsmentioning

confidence: 99%

Section: Low-voltage Dstatcom Characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Increasing Feeder PV Hosting Capacity by Regulating Secondary Circuit Voltages

Padullaparti

Jothibasu

Santoso

et al. 2018

2018 IEEE Power &Amp; Energy Society General Meeting (PESGM)

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“…Improvement in voltage profile of the grid can be achieved through various means amongst which the most common ones include: (i) addition of new equipment such as the reactive power compensating devices in specific locations of the grid through optimal placement algorithms [6] and; (ii) device control through smart strategies with the use of available closed loop control in the grid [7]. However, these methods for improving the voltage profile are generally not viable in the Nigerian grid as the available degree of freedom generally only includes control of generator voltage set-points and manual switching of grid reactors [8].…”

Section: Introductionmentioning

confidence: 99%

Improving Voltage Profile of the Nigerian Power Grid

Pandey

Agarwal

Jereminov

et al. 2019

2019 IEEE PES/IAS PowerAfrica

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Extreme voltages at the system nodes are one of the primary causes for total and partial collapse of the Nigerian grid. In this paper, we develop a framework to re-dispatch the voltage set-points of committed generators in the grid to improve the voltage profile of the system nodes thus lowering the likelihood of a grid collapse. This framework is an extension of circuittheoretic formulation that can robustly solve general-purpose grid optimization problems. In the results section, we re-dispatch the voltage setpoints for committed generators in real-life Nigerian grid operation and planning test cases to improve the overall voltage profile of the grid. We further demonstrate that the re-dispatched grid is more resilient and secure than the base case through running contingency analyses.Index Terms-current voltage formulation, current mismatch formulation, equivalent split-circuit, Nigerian grid, voltage collapse.

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