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Application cases of FGI device upgrading

With the promotion of China's "double carbon" strategy, the installed capacity of new energy in China has been increasing, which has greatly alleviated the problem of electricity difficulties in some areas. The increase in the installed capacity of new energy has brought about many systemic changes, but also some power quality problems, such as voltage fluctuations caused by the randomness and volatility of new energy, and in some cases there will be low power factor problems, in order to solve these problems, reactive power compensation devices need to be installed at the station.

1. Project background

The types of reactive power compensation devices include FC, SVC, SVG and other products. Some stations built earlier install FC and SVC equipment for reactive power compensation. With the development of technology, SVG has more and more applications. In terms of performance, SVG has advantages such as fast response time, high product integration, small footprint and so on. So many stations have been replaced with SVG.

A power station in Erenhot was put into operation in 2011, using SVC compensation equipment. Due to the old and slow response speed of the equipment, it cannot meet the requirements of power system adjustment rate and control accuracy, and there is no function of high and low voltage crossing, so it needs to be replaced by SVG as a whole.

2.FGI scheme

FGI engineers through the site investigation, combined with the actual situation of the site, the development of the transformation plan. The original SVC is dismantled as a whole, the primary and secondary cables are qualified to benefit the old after testing, and the cost of user transformation is reduced. The layout of SVG products is designed according to the space of the original reactive power compensation room, so as to adapt to the on-site environment and reduce the difficulty of transformation construction.

SVC before transformation

before transformation

SVC after transformation

after transformation

After the transformation and replacement, the performance of the product has been greatly improved to meet the requirements of relevant regulations.

3.Technological transformation effect

FGI Indoor water-cooled SVG

Indoor water-cooled SVG

After upgrading, the product has the following characteristics:

◆ High and low voltage crossing performance is superior
Excellent high and low voltage crossing control function, performance indicators are better than the national standard, to ensure the stable operation of equipment.
◆ Fast response
Reactive response time is less than 5ms to achieve accurate and fast compensation.
◆ Harmonic control function
It has the function of multiple harmonic detection, and sends out reverse harmonic current to control, and controls the power quality of harmonic current output at the station.

FGI has focused on the research and development and application of power electronics technology for many years, SVG products have completely independent intellectual property rights, series of products are widely used in wind power, photovoltaic, metallurgy, coal and other industries, the market share has increased year by year, and won the manufacturing industry single champion title. FGI strives to implement the corporate vision of "saving energy and serving society" and contribute FGI's strength to the realization of the country's "double carbon" goal.

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WhatsApp: +86-178 2841 7112
Add: FGI Industrial Park, Jincheng Road Middle, Wenshang, Jining City, China


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