1.Introduction

With the increasing demand for clean energy, photovoltaic hydrogen production, as a new energy conversion technology, is receiving more and more attention. Photovoltaic hydrogen production is when there is surplus electricity, the use of excess electricity to electrolyze water to produce hydrogen, the electric energy into hydrogen can be stored; In the event of a gap in the power supply, the stored hydrogen is converted into electricity and used to supplement the missing power. This mode has certain cost advantages compared with the construction of large-scale energy storage devices, and can also solve the problem of "abandoning light" to a large extent. For example, Xinjiang Kuqa photovoltaic hydrogen production project, 20% of the electricity connected to the grid, 80% of the electricity used for hydrogen production.

Photovoltaic hydrogen production projects are also faced with the randomness and volatility of photovoltaic power generation, which is greatly affected by the weather and has the problem of large voltage fluctuations. Reactive power compensation devices need to be configured to stabilize the voltage and improve the power factor. So. Decided to use FGI Static Var Generator equipment to solve the problem of large voltage fluctuations, so as to improve the power factor.

2.FGI Scheme

FGI provides professional solutions to on-site problems and applies static var generator to power quality management. SVG devices are connected to the power grid in a high-voltage cascade and can output high-quality waveforms. When the equipment is running, the system operation data is collected for calculation, and the output is adjusted in real time according to the system status, so as to achieve the effect of fast, accurate and dynamic compensation, and ensure the power factor and voltage stability at the junction point. At the same time, the equipment has an external communication interface, and can access the power station control system to achieve unified scheduling.

3.Program Advantage

FGI actively responds to the policy and industry needs, considering the operation of the equipment, for the dynamic reactive power compensation device has carried out several updates and iterations, forming the following advantages:

After the use of FGI Static Var Generator excellent high and low voltage crossing performance.The high and low voltage crossing range and duration and other indicators are higher than the national standard, which can maintain the equipment in the case of power grid voltage sudden drop or sudden rise, and does not expand the accident.

After using FGI Static Var Generator, you can automatically switch the function of time-sharing control.It can set different operating modes according to different times and switch automatically to better adapt to different site needs.

A wide variety of FGI Static Var Generator models.With indoor, outdoor, air-cooled, water-cooled models, the voltage range covers 6kV, 10kV, 20kV, 35kV various grades, to meet various project requirements.

FGI Static Var Generator has multi-machine cooperative control mode.It can realize unified and coordinated control when multiple devices are running in common bus.