HSVG series of medium voltage static var generator
HSVG is the perfect solution to the reactive power compensation and harmonic governance issues. The series covers the 10kV and 35kV two voltage levels, and the power level range of single unit is 1.0~10MVar. Products can be widely used in regional power grids, wind farms, photovoltaic power plants, metallurgy industry, electric arc furnaces, hoisters, coal mines and other fields, to stabilize the grid voltage of receiving end and improve the quality of power supply and transmission capacity.
Performance Features:
1.With the ability to effectively compensate for the 2nd~13th harmonics
2.Continuous smooth adjustment, two-way reactive power compensation
3.Real time tracking, fast response(response time is less than 5ms)
4.With the three-phase active and reactive unbalanced phase-splitting compensation function
5.Both dynamic harmonic compensation function, and dynamic reactive power compensation
6.The voltage flicker suppression capability is strong, which can effectively control the fluctuation and flicker of grid
7.With strong power grid adaptability, highly adaptive to China's various power operation conditions, so as to improve the reliability and utilization of power supply
8.High power density, small footprint, optimization of compact power modules, system layout and cooling system, thus further increasing the power density and reducing the area
9.Rich compensation functions, various control methods, support for the control modes from local, remote, scheduling system, support for compensation modes of reactive power setting, constant voltage, constant power factor and others
10.Rich monitoring and diagnostic capabilities, with event logging, fault recording, remote network access, fault processing wizard and other functions, providing complete technical support for operation status monitoring, field problem analysis and fault timely treatment
What is Statcom?
STATCOM (Static Synchronous Compensator, also known as SVG). Sanhe model number is HSVG. It is an important device for Flexible AC Transmission System (FACTS), which is the third generation of dynamic VAR compensation device after FC, MCR, and TCR type of SVC (Static VAR Compensator). Its appearance represents the application of most advanced technology for dynamic VAR compensation. It is also known as DSTATCOM when apply in power distribution.
The term "static" is used in comparison to a traditional phase modifier, i.e. our SVG doesn't have any rotating mechanical parts. The word "dynamic" means that SVG itself is automatically adjusted according to the reactive power changes in the system, so that the system is always in an optimal state.
Comparing with other compensator, what does HSVG have the advantages?
SVG is currently the most advanced compensation equipment in the world, with a response time of <5ms and an output of harmonic content is less than 3%, the loss of SVG is lower than 0.8% of the power of the whole machine.No other compensator can realize these features.
SVG occupies a small space, does not require a lot of capacitors and reactors (occupies about one-third of the area of traditional compensation equipment), is easy to maintain, has low noise, and is easy to expand.
SVG equipment is the modern power electronic device which has IGBT to switch on and off quickly, and control the phase of voltage and current by controlling the modulation wave generated by the system, so that the voltage and current can be controlled. The phase relationship changes to achieve the capacitor and reactor functions. SVG itself is not a linear system and does not conform to the traditional Ohm's law.
What is the function of HSVG?
We can use the water supply as an analogy to the power supply system.For example: if we want to take a bath, we need cold water and hot water to adjust the water temperature and water pressure.
When we use water temperature and water pressure to throw out two concepts, power factor and voltage. We compare the reactive power in the system to hot water, and the active power to cold water, we can adjust the ratio of reactive power and active power to adjust the power factor of the system, and also adjust the voltage.
Going back to the water supply again, there will be heat loss in the long-distance transmission of hot water. At this time, we will put forward the concept of line loss in power system. The transmission of reactive current on the line will cause line loss. At this time, another concept is mentioned: nearby(local) compensation to reduce line loss. The main function of SVG reactive power compensation is to adjust the power factor, stabilize the voltage, reduce the line loss, and improve the utilization rate of the equipment. In a word, Statcom can save energy, prolong the devices lifetime.
SVG Economic benefits
To be viewed two points,there are cost-saving and operational safety.
- SVG can fundamentally solve the problem of power regulation and electricity charges, to avoid penalty of low power factor.SVG can reduce line loss, reduce active electricity bills through improving power factor.While your plant is enlarged, the old SVG can be added with one or more new SVG cabinets to satisfy the application. It saved the purchasing cost a lot.
- The harm of low power factor has already occurred in many power transmission and distribution systems, such as low voltage, start-up problems, relay protection problems, grid paralysis, power system collapse and other serious power transmission and distribution accidents have occurred many times. SVG is a the safest and most effective compensation device.
- Firstly, the low power factor in industrial occasions may cause operational safety problems, and reactive power compensation is imperative.
- Secondly, SVG has safety protection function and redundant design.It is not easy to resonate with the grid system, no harmonic generation, no inrush current when switching, no impact on the grid system, etc..It can naturally penetrate into the power grid.
Company Profile
Xiamen Factory
RMU Production
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Xiamen Factory
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