Indoor 2Mvar 13, 2 Kv 60Hz Statcom for Mine

• Certification: ISO9001, CCC, SGS
• Protection: Shock Resistance
• Installation: Vertical
• Housing: Aluminum Zinc or Cold-Rollled Steel
• Rated Voltage: 3-35kv
• Transport Package: Plywood
• Model NO.: hsvg
• Specification: 1-100Mvar
• Trademark: Sanhe
• Origin: China
• HS Code: 8537209000
• Production Capacity: 10000PCS\Year

Product Description

Specific information:

Sanhe Statcom is a reactive power compensation system with IGBT and able to rapidly and continuously provide capacitive or inductive reactive power for controlling constant reactive power, constant voltage and constant power factor at the targeted point, ensuring stability, efficiency and quality of the electricity system. In electricity distribution system, medium and small capacity Statcom products installed near to some special loads (e.g., electric arc furnace) can significantly improve the electricity quality at the point at which the loads are connected to the public grid. Such improvements include, for example, increasing power factor, balancing the three-phase distribution, eliminating voltage flickering and fluctuation, and inhibiting harmonics contamination.

Statcom 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.
 

Technology parameters

1. Rated capacity, ±1~±100Mvar
2. Rated work voltage, 6kV,10kV,27.5kV,34.5kV,35kV
3. Rated frequency: 50/60Hz
4. Over-load capacity: more than 1.2 times overload
5. Response time, ≤5ms
6. Active power loss: ≤0.8%
7. Total harmonic distortion: ≤3%
8. Connection:Wye connection or delta
9. Control power: 380VAC, 220VAC, or 220VDC
10. Reactive power regulation: change reactive power continuously and smoothly.
11. The start regulated reactive power: 5kvar
12. The resolution of compensate current: 0.5A
13. Communication interface: ethernet, RS485, CAN, high-speed optical communication interface
14. Communication protocol: MODBUS_RTU, ProfiBUS, CDT91, IEC61850-103/104, CANOPEN, User-defined. It can be set on the touch screen.
15. Running mode: constant reactive power device, constant assessment point of reactive power, constant assessment point of power factor, constant assessment point of voltage, load compensation and 96 points time sharing control.
16. Parallel mode: Support multi devices in parallel, support centralized compensation, support comprehensive compensation with no more than 4 FC.
17. Protection level: indoor meet IP40, outdoor meet IP44.
18. IGBT bypass: Yes (at least n-1) (optional)
19. Wind application: Low voltage ride through, high voltage ride through capability
20. Protection: Bus over-voltage, bus under-voltage, over-current, quick break, DC over-voltage, power electronics protection, lost pulse, triggering abnormal, over-voltage breakdown, over-heat. System over-load, system short-circuit, system over-voltage, system frequency abnormal. Remote short-circuit or single-phase grounding protection, external fault protection. Input interface, output interface protection, system power abnormal protection.

 

Working Principle and Main Circuit

Statcom connects a self-commutating bridge circuit in parallel to the power grid through reactor. By appropriately adjusting the phase and amplitude of the AC output voltage of the bridge circuit, or controlling its AC side current, the circuit can absorb or emit reactive current, achieving Dynamic reactive power compensation.

For 35kV rated voltage,there is two types of structure to realize low cost and better performance.

Direct hanging primary diagram
Connecting reactor,isolation switch and 35kV high voltage bus.

Buck type
Adding transformer to upgrade the voltage to 35KV



FAQ
Q What is Statcom?
A  STATCOM (Static Synchronous Compensator, also known as Statcom). Sanhe model number is Statcom. 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 Statcom doesn't have any rotating mechanical parts. The word "dynamic" means that Statcom 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(capacitor bank), what does Statcom have the advantages?
Statcom 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 Statcom is lower than 0.8% of the power of the whole machine.No other compensator can realize these features.
Statcom  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.
Statcom 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. Statcom itself is not a linear system and does not conform to the traditional Ohm's law.
What is the function of Statcom?
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 Statcom 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.