Calculation Method of Capacity of SVG Dynamic Capacitance Compensation Cabinet

How to select the capacitance of the SVG dynamic capacitance compensation cabinet and how to calculate the compensation capacity? The title is a very big question, but most people really don't know. Today, the editor introduces the selection of SVG capacitors with electrical knowledge. I don't understand it. It doesn't matter, the method for calculating the capacity of the SVG dynamic capacitance compensation cabinet is Aodong Electric ADSVG. If you have any technical questions, you can call us at any time. Consider reserving 20% of the surplus, that is, you need to compensate 32A total wave current. When calculating the reactive power compensation capacity of SVG device, not only the fundamental reactive power compensation capacity of 10kV distribution network should be considered, but also the harmonic components in the distribution network should be compensated within the capacity range, so as to effectively control the harmonics of distribution network and effectively improve the quality of power supply. According to statistical calculation, the reactive power capacity of bus I and bus II to be compensated is 3.6MVA and 3.9MVA respectively. Therefore, the calculated required capacity of SVG reactive power generator device selected for I bus and II bus respectively is: 3.6+0.57/2=3.85MVA, and the compensation capacity of SVG reactive power generator is taken as 4 Mvar. Similarly, the compensation capacity of SVG reactive power generator device selected for II bus is also taken as 4Mvar.
Overview:
 SVG is a typical power electronic equipment, which consists of three basic functional modules: detection module, control operation module and compensation output module. Its working principle is that the current information of the external CT detection system, and then the current information, such as PF, S, Q, etc., is analyzed through the control chip; then the controller gives the compensated driving signal, and then the inverter circuit composed of the power electronic inverter circuit sends out the compensation current. The most advanced SVG product in the world is STATCOM.
Principle:
 SVG static var generator adopts IGBT to compose self-commutated bridge circuit, which is connected in parallel to power grid through reactor. The amplitude and phase of AC side output voltage of bridge circuit can be adjusted properly, or AC side current can be controlled directly. The reactive power needed can be absorbed or emitted rapidly to realize the purpose of rapid dynamic adjustment of reactive power. As an active compensation device, it can not only track the impulse current of impulse load, but also track and compensate harmonic current.
6KVSVG selection table:
10KVSVG Selection Table:
Field production drawing: SVG Product Features:
1. Dedicated IGBT drive circuit ensures the reliability of IGBT high-frequency switching, and uploads the status monitoring information to the upper monitoring system in real time;
2, DC side voltage balance control;
3, trigger, monitoring unit phase independent design, fast running speed, strong anti-interference;
4. Reactive power detection technology based on instantaneous reactive power theory;
5, chain structure modular design, to meet the requirements of high reliability of the system, easy maintenance;
6, perfect protection function;
7. It can provide continuous, smooth, dynamic and fast reactive power compensation from inductive to capacitive;
8, chain link self-energy design, high reliability;
9. Current source characteristics, output reactive current is not affected by bus voltage;
10, laminated copper bar application, to meet the requirements of IGBT high frequency trigger;
11, response time up to 5ms.
12. Insensitive to system impedance parameters
13, can solve the problem of load imbalance; The above is SVG dynamic capacitance compensation cabinet manufacturer Aodong Electric introduced for you: SVG dynamic capacitance compensation cabinet capacitor how to select? How to calculate the compensation capacity is a little complicated. If you have any questions, please feel free to call us. SVG Dynamic Capacitance Compensation Cabinet Capacity Calculation Method Aodong Electric ADSVG