6-35kV High voltage Static var Generator

SVG (Static Var Generator) is a modern reactive power compensation device that uses a self commutating phase change current circuit. It is the latest technology in the field of reactive power compensation, also known as STATCOM (Static Synchronous Compensator).

The SVG dynamic reactive power compensation device produced by our company has advantages in response speed, stable grid voltage, reduced system losses, increased transmission force, improved transient voltage limit, reduced harmonics, and reduced footprint.

The development of SVG dynamic reactive power compensation device relies on the strong technical strength of our company, and fully utilizes the advanced technology and production experience advantages of the group company in the power industry, fully utilizing comprehensive research, design, manufacturing, and testing capabilities. Our company has close academic connections and technical cooperation with renowned research institutions and electrical companies both domestically and internationally. We are willing to work together with users to improve the power quality of the power grid with advanced technology and high-quality products, and contribute to energy conservation, consumption reduction, and safety production in the power generation, supply, and consumption sectors.

※ The triggering and monitoring units are designed with independent phase separation, with fast operating speed and strong anti-interference ability;

※ Reactive power detection technology based on instantaneous reactive power theory;

※ DC side voltage balance control;

※ Complete protection functions;

The dedicated IGBT driver circuit ensures the reliability of IGBT high-frequency disconnection and uploads real-time status monitoring information to the upper monitoring system;

※ The chain links are designed with self energy harvesting, ensuring high reliability;

The modular design of the chain structure meets the requirements of high reliability of the system and is easy to maintain;

※ The application of stacked copper bars meets the requirements of IGBT high-frequency triggering;

The response time can reach 5ms.

※ Can provide continuous, smooth, dynamic, and fast reactive power compensation from inductive to capacitive;

※ Able to solve the problem of load imbalance;

※ Current source characteristics, output reactive current not affected by bus voltage;

※ Not sensitive to system impedance parameters

① Wind power generation system

The uncertainty of wind resources and the operating characteristics of wind turbines themselves cause fluctuations in the output power of wind turbines, leading to problems such as unqualified grid connected power factor, voltage deviation, voltage fluctuation, and flicker. For large capacity wind farms, stability issues still exist when connected to the system, and dynamic reactive power compensation systems are needed; On the other hand, fluctuations in system voltage can also have an impact on the normal operation of the fan. The application of SVG dynamic reactive power compensation devices in wind farms can not only meet the requirements of power factor, voltage fluctuations, and flicker of wind power integration systems, but also reduce the impact of system disturbances on wind turbines.

② Other heavy industrial loads such as coal mine hoists

Other heavy industrial loads such as coal mine hoists will have the following impacts on the power grid during operation;

(1) Causing voltage drop and fluctuation in the power grid;

(2) Low power factor;

(3) The transmission device will produce harmful high-order harmonics.

Installing an SVG dynamic reactive power compensation device can perfectly solve the above problems.

③ Electric arc furnace

As a non-linear load connected to the power grid, electric arc furnaces will have a series of adverse effects on the power grid, mainly including:

(1) Causing severe three-phase imbalance in the power grid, resulting in negative sequence current;

(2) Generate high-order harmonics, among which there is a common coexistence of 2nd and 4th even harmonics and 3rd, 5th, 7th odd harmonics, which leads to voltage distortion becoming more complex;

(3) There is severe voltage flicker;

(4) Low power factor.

The use of SVG dynamic reactive power compensation device can solve the above problems, quickly compensate for stable bus voltage, improve productivity, minimize voltage fluctuations and flicker, and the phase separation compensation function can eliminate three-phase imbalance caused by the arc furnace.

④ Rolling mill

The reactive power impact generated by the rolling mill will have the following impacts on the power grid:

(1) Causing voltage fluctuations in the power grid, in severe cases causing electrical equipment to malfunction and reducing production efficiency;

(2) Power factor reduction;

(3) The transmission device of the load will generate harmful high-order harmonics, which will cause serious distortion of the grid voltage. Installing an SVG dynamic reactive power compensation device can perfectly solve the above problems, stabilize the bus voltage, eliminate harmonic interference, and improve power factor.

⑤ Power system substation (66/110kV)

The SVG dynamic reactive power compensation device can quickly and accurately compensate for capacitive and inductive reactive power. While stabilizing the bus voltage and improving power factor, it thoroughly and conveniently solves the problem of reactive power backflow. When installing a new SVG dynamic reactive power compensation device, the existing fixed capacitor bank and thyristor controlled reactor (TCR) can be fully utilized to achieve the best results with minimal investment, becoming the most effective method to improve the power supply quality of the regional power grid.

⑥ Long distance power transmission

The installation of SVG dynamic reactive power compensation devices on high-voltage, high-power, and long-distance power transmission lines can significantly improve the transmission and distribution performance of the power system.