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Help CenterCapacity Configuration Method of High Voltage SVG Dynamic Reactive Compensation Cabinet in Metallurgical Industry
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The metallurgical industry uses the configuration method of SVG dynamic compensation cabinet capacity, different loads, different configuration methods, rolling mill, electric arc furnace, refining furnace, etc. to introduce the configuration method of SVG dynamic compensation cabinet capacity:
How to configure compensation for electric arc furnace
1. In general, the hybrid compensation scheme of SVG+FC is configured
The larger the electric arc furnace capacity, the more critical it becomes to adopt a hybrid FC+SVG solution that can significantly reduce costs while maintaining sufficient response speed. The FC configuration scheme follows a 2-stage, 3-stage, 4-stage, and 5-stage approach, with the ratio of configurations set at 2:1.6:1:1.6.
The total capacity of SVG+FC is configured at 1.05 times that of the electric arc furnace transformer. Assuming a 21MVA capacity for the 20MVA furnace-side configuration, a combination of 11MVA SVG and 10MVA FC can be configured.
For smaller capacity furnaces, such as electric arc furnaces below 5 MVA, a pure SVG configuration can be adopted. This is because the cost advantage of combined solutions becomes less apparent in such cases. The capacity for reactive power compensation should be determined through the furnace's transformer rather than its tonnage, as the transformer determines the furnace's power output while tonnage only defines its volume capacity.
How to configure compensation for refining furnace
The compensation performance is not required to be high
Since the refining furnace smelts molten iron rather than scrap metal, its electric arc remains stable with minimal impact. The system can be configured solely with a FC, or alternatively with either an SVC or SVG. Regarding medium-frequency furnace compensation configuration, options include using pure SVG technology or combining SVG with FC systems.
How to configure the rolling mill
Compensation 1. According to the site situation, it can be configured as pure SVG or SVG+FC.
The load characteristics of rolling mill are impulse reactive power and harmonic combination electrical characteristics. Compared with electric arc furnace, it only has no three-phase imbalance. Therefore, the best compensation method for impulse reactive power is SVG, and for harmonics, the combination scheme of SVG or FC can be adopted.
If the customer considers the cost factor, the combination of SVG+FC is configured. The filtering frequency of FC is determined according to the rectification configuration of the rolling mill. For example, if the 6-pulse rectifier is mainly configured with 5th and 7th compensation, or if the 24-pulse rectifier is recommended, a high-pass filter should be configured.
The 6-pulse and 12-pulse rectification can be implemented by SVG to achieve the comprehensive compensation effect of harmonic and reactive power. The cost is slightly higher than that of pure FC.
The configuration capacity is estimated according to the rolling mill capacity, and the ratio of SVG and FC capacity is generally configured according to the 1:1 ratio.
Scope of application of SVG reactive power compensation cabinet:
The SVG series products are widely applicable across industries including petrochemicals, power systems, metallurgy, electrified railways, and urban construction. They provide high-quality and reliable reactive power compensation and filtering solutions for various equipment such as asynchronous motors, transformers, thyristor converters, frequency converters, induction furnaces, lighting systems, electric arc furnaces, electric locomotives, hoists, cranes, stamping machines, cranes, elevators, wind turbines, welding machines, resistance furnaces, and quartz melting furnaces. The ADSVG series enhances power transmission capacity, reduces energy loss, compensates for reactive power, mitigates harmonics, suppresses flicker, stabilizes grid voltage, balances three-phase systems, modifies system damping characteristics, and improves overall system stability.
The effect achieved by using SVG:
1. The electric arc furnace has a large reactive demand, serious three-phase imbalance and harmonics, the main frequency is 2, 3, 4, 5, 6, 7 and various inter-harmonics, serious flicker and power grid voltage shock, which can be significantly improved after using SVG;
2. Medium frequency furnace has a large amount of reactive power and harmonic demand, which can be divided into 6-pulse and 12-pulse furnace types. SVG can solve this problem;
3. The load of the refining furnace is relatively stable, with slight imbalance, low harmonic content and weak flicker impact. The main demand is reactive power demand, which can be solved by SVG;
For metallurgical industry applications, we provide advanced SVG (Static Var Generator) dynamic reactive power compensation cabinet capacity configuration methods. Based on extensive practical experience in the sector, our SVG manufacturers will guide you through cabinet configuration and model selection processes. If you require further clarification, Aodong Electric can dispatch technicians for on-site testing to develop customized solutions tailored to your enterprise's needs, effectively addressing power quality issues in industrial operations.
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