The role of the photovoltaic support rod

A new transient circuit model for calculating the transient response of PV support is developed. • The transient overvoltage caused by the mode of air-termination rod and lightning strike point are investigated. • The influences of additional leg, tile angle and equipotential bonding have been studied. •.

Tracking photovoltaic support systems utilize mechanised tracking support to adjust the orientation of photovoltaic modules. The angle between direct sunlight and the modules is minimized which improves energy yield efficiency and produce greater economic benefits.

This paper presents a procedure of PV support modelling for lightning transient response analysis. Both the lightning current flow and the voltage distribution are investigated. Meanwhile, the installation mode of air-termination rod, the lightning points, the influence of additional auxiliary leg, etc., on the lightning transient are researched.

Considering the air-termination rod and earthing system, four types of PV supports are chosen and their lightning transient responses under direct lightning strike are comprehensively studied.

This article discusses the lightning protection performance of a grounding grid for photovoltaic (PV) systems protected by independent lightning rods. Several grounding grid configurations are investigated, and the transferred voltages between the dc cables and supporting structures at different points in the PV system are evaluated using the .

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6 FAQs about [The role of the photovoltaic support rod]

Can a PV power plant be protected by a lightning rod?

With the bond- overvoltage in the system. It is highly recommended to be adopted in the PV power plant protected by independent lightning rods. photovoltaic (PV) power plant. I. I NTRODUCTION tion for electric power systems. Numerous studies have systems during lightning strikes. It is found that soil stratiﬁ-

What is a fixed adjustable photovoltaic support structure?

In order to respond to the national goal of “carbon neutralization” and make more rational and effective use of photovoltaic resources, combined with the actual photovoltaic substation project, a fixed adjustable photovoltaic support structure design is designed.

What are the dynamic characteristics of photovoltaic support systems?

Key findings are as follows. Dynamic characteristics of tracking photovoltaic support systems obtained through field modal testing at various inclinations, revealing three torsional modes within the 2.9–5.0 Hz frequency range, accompanied by relatively small modal damping ratios ranging from 1.07 % to 2.99 %.

How many rods are in a photovoltaic axis bar?

The axis bar is composed of 11 shaft rods. Photovoltaic panels are installed on the photovoltaic support purlins. The reciprocating rotation (tilt angle) of the axis bar allows the panel to receive direct sun. The structure is symmetrical with respect to the axis bar, and the axis bar provides a fixed axis for torsional deformation.

What are the dynamic characteristics of the tracking photovoltaic support system?

Through processing and analyzing the measured modal data of the tracking photovoltaic support system with Donghua software, the dynamic characteristic parameters of the tracking photovoltaic support system could be obtained, including frequencies, vibration modes and damping ratio.

How stiff is a tracking photovoltaic support system?

Because the support structure of the tracking photovoltaic support system has a long extension length and the components are D-shaped hollow steel pipes, the overall stiffness of the structure was found to be low, and the first three natural frequencies were between 2.934 and 4.921.

The role of the photovoltaic support rod