Devices and control strategies for voltage regulation under influence of photovoltaic distributed generation. A review

Leon, Leonardo F.; Martínez, Maximiliano; Ontiveros, Leonardo Javier; Mercado, Pedro

doi:10.1109/tla.2022.9693557

Cited by 27 publications

(11 citation statements)

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“…Each one assigns different weights to the efficiency measured at different power levels, or percentage of nominal power. The Euro efficiency is intended for inverters installed in middle Europe climate and is defined by (1). On the other hand, the California Energy Commission (CEC) has a better representation of inverters installed in the US south-west regions and is defined by (2).…”

Section: Inverter Efficiency Testsmentioning

confidence: 99%

“…D URING the last decade, Photovoltaic (PV) installed capacity has grown exponentially worldwide driven by a decrease in technology cost, strong government incentives, and technological advancements such as higher PV module efficiency and additional functions on smart inverters. However, high penetration of PV generation can cause overvoltages due to active power injection when load demand is low [1]. Other problems associated with large fractions of PV in distribution networks include negative impacts on protection, power flow, and frequency stability [2].…”

Section: Introductionmentioning

confidence: 99%

“…Among these new functions, inverters have the ability of providing reactive power to mitigate grid voltage fluctuations. Traditionally, grid operators have used transformers, step voltage regulators, capacitor banks, and other devices for voltage stabilization by means of injecting or absorbing reactive power [1].…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Voltage Stabilization Functions of Residential PV Inverters in a Power Hardware-in-the-Loop Environment

2022

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The exponential growth of Photovoltaic (PV) technology is creating concerns for electric grid operators. As PV penetration increases, overvoltage in the distribution network can occur due to a mismatch between PV generation and load demand. However, PV smart inverters can be part of the solution to stabilize grid voltage. By providing reactive power and other grid supporting functions, PV inverters in a distribution network can mitigate this problem and enable a higher integration of renewable energy. To accomplish this, characterization and testing of advanced functions must be performed at a small scale before deploying these strategies in a field. In this work, we described in detail the components and communication interfaces of a Hardware-in-the-Loop testbed that includes two 3.8 kW PV inverters from different manufacturers. We conducted efficiency tests on the inverters and characterized the grid supporting functions for grid voltage stabilization, specifically constant power factor, volt-var, and volt-watt. We identified some abnormalities in the operation of the volt-var-watt control in one of the inverters and presented a method to overcome the limitation in remote control of another inverter using Modbus communication. Identifying, understanding, and overcoming shortcomings on the operation of PV smart inverters that provide grid supporting functions is key for the quick adoption of this technology and can help regulatory agencies to determine what is the appropriate control mode that will facilitate higher PV capacity. Additionally, we discuss the economic and technical implications of operating the inverter in active or reactive power grid control.INDEX TERMS device hunting, grid power priority, hardware-in-the-loop, IEEE 1547, renewable energy integration, smart inverters, volt-var, volt-watt VOLUME 4, 2016

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Section: Inverter Efficiency Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization of Voltage Stabilization Functions of Residential PV Inverters in a Power Hardware-in-the-Loop Environment

2022

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“…More and more distributed renewable energy and controlled loads are being connected to low-voltage distribution substation areas, and new types of power service such as source-grid-load-storage coordination, distributed photovoltaic (PV) regulation, and carbon footprint monitoring require large amounts of real-time data and low data transmission and processing latency to support [1][2][3][4] . Containers technology uses the virtualization capabilities of edge computing to share the same operating system kernel and isolate application processes from the underlying system [5][6] .…”

Section: Introductionmentioning

confidence: 99%

Container-based low-delay microservice data offloading and processing for distribution substation area gateway

Li,

Shi,

Deng

et al. 2023

Eighth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2023)

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“…DPV has many advantages and technological superiorities, such as nearby power supply, clean and efficient, and convenient and flexible, etc. However, the influence of largecapacity DPV on the voltage stability of distribution network (DN) gradually appear, mainly owing to the power flow change in both directions and the randomness of DPV power output [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

A static voltage stability index based on P-V curve for the medium-voltage distribution network with distributed PV

Li,

Gao,

Jiang

2023

J. Phys.: Conf. Ser.

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With the rapid increase of distributed photovoltaic (DPV) generations, the static voltage stability (SVS) of distribution network (DN) is faced with more and more challenges. Considering the characteristics of DPV and the network structure, an appropriate static voltage stability index (SVSI) in the medium-voltage DN with DPV is studied in this paper. In terms of the limitation of the traditional SVSI that only reflects the load change, based on P-V curve, a novel voltage change rate - network load change rate index (M-index) is proposed. The M-index considers the impacts of double changes in DPV power output and load level. The model of classic 33-node network with a DPV source is established to investigate the proposed M-index. By changing the DPV penetration percentage and the DPV access point, and comparing with the existing Load-index, the validity and superiority of M-index is verified. Comparing with the traditional SVSI, the M-index is more propitious to evaluate the SVS for the medium-voltage DN with DPV.

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Devices and control strategies for voltage regulation under influence of photovoltaic distributed generation. A review

Cited by 27 publications

References 0 publications

Characterization of Voltage Stabilization Functions of Residential PV Inverters in a Power Hardware-in-the-Loop Environment

Characterization of Voltage Stabilization Functions of Residential PV Inverters in a Power Hardware-in-the-Loop Environment

Container-based low-delay microservice data offloading and processing for distribution substation area gateway

A static voltage stability index based on P-V curve for the medium-voltage distribution network with distributed PV

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