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
Rated capacity, ±1~±100Mvar
Rated work voltage, 6kV,10kV,27.5kV,34.5kV,35kV
Rated frequency: 50/60Hz
Over-load capacity: more than 1.2 times overload
Response time, ≤5ms
Active power loss: ≤0.8%
Total harmonic distortion: ≤3%
Connection:Wye connection or delta
Control power: 380VAC, 220VAC, or 220VDC
Reactive power regulation: change reactive power continuously and smoothly.
The start regulated reactive power: 5kvar
The resolution of compensate current: 0.5A
Communication interface: ethernet, RS485, CAN, high-speed optical communication interface
Communication protocol: MODBUS_RTU, ProfiBUS, CDT91, IEC61850-103/104, CANOPEN, User-defined. It can be set on the touch screen.
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.
Parallel mode: Support multi devices in parallel, support centralized compensation, support comprehensive compensation with no more than 4 FC.
Wind application: Low voltage ride through, high voltage ride through capability
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.
Company Profile
Founded in 2002, Sanhe Power Tech is a national high-tech enterprise that specializes in power quality products, R&D of technology and solutions, production,service etc. It becomes industry-leading company. The company has got multiple technologies including. 28 invention patents, 24 software copyrights, 22 national standards and 15 industry standards drafting. Sanhe Power Tech is a member of international committees such as the International Electrotechnical Commission (IEC) the Institute of Electrical and Electronics Engineers (IEEE) etc. The software development system has passed the CMMI evaluation of the American SEI. There are three main business covering: A full range of power quality testing and governance products and complete solutions. Distributed new energy system products and advanced solutions. Primary and secondary engineering based on "dual carbon" and energy management with standardized and professional engineering services. Our Advantages
Simulation of GRID Reactive Load Flow Analysis of L-C Circuit Amplitude-frequency Characteristic Integration & Relay Coordination Reaction Characteristic Curve of Permanent Magnet Breaker Sampling & Filtering of Electronic Circuit IGBT Driving & Protection PWM Technology Technology about Semiconductor Forced Commutation Thermal Simulation & Heat Exchange Design Feed-forward Second-order Complex Vector Algorithm 3D & Data Simulation Instrumented IOT Communication VP Scheduling & Dispatcher Digital Twins of Micro-Grid & Islanding-Grid
FAQ
What kind of payment terms can we accept?
Payment in advance,Installment payments,Letter of credit(L/C).
What is the lead time of products?
According to different products, the lead time is different. For standard products like APF,SVG, the lead time is one week. For customized capacitor bank etc, the lead time is 25 to 45 days.
How to find the product model if you are some demand?
If you need our technical guide,please advise your problem details as much as you can,we can give more reasonable solution. You may provide following drawings or report Single line drawing Panel primary scheme drawing Power quality test report(mainly about harmonics)
How to find the product model if you have details electrical drawings?
Please advise Load name plate, load working condition, existing power factor, target power factor, harmonic times etc Or Rated voltage,compensation capacity, harmonic times(reactor detuning factor), other components etc.
How to find the product model if you can not provide enough information?
We can supply your products according to your technical requirement. We can go to your project site and give a professional test report after test.
Why do we choose Sanhe power quality solution?
Sanhe has specialized in over 20 years experience in power quality products and solution. We have met most of power quality problems and gave the solutions.
What kind of technical service does Sanhe provide?
• Project-site power quality test ( or test report from customer) • Improvement solution and budget • Product solution and price • Products supply • Product commissioning
What kinds of standards does Sanhe product conform to?
Except China standards, Sanhe products also conform to IEC standards including IEC61921 :2003 IEC61000-4-5:2005 IEC60529:2001 IEC60931-1: 1996 IEC60439-1 :2005 IEC60664-1 2007 IEC60831-1: 1996 IEC61000-4-3/2/4/5/18 IEC61000-2-4 IEC60255 IEC62208 2011… IEC255-22-1
What is the compensation effect after using Sanhe products? • Harmonic filtering meets standard • Power factor is over 0.95,electrical bill saving,low reactive power penalty killing • Reducing the loss of transformer and line improve the distribution ability, prolong the lifespan of electrical equipment
How long is the product guarantee time?
Usually,the guarantee time is one year. However,we can accept over 5 years too. Please contact our sales to get details information.
How to become the distributor or agent of Sanhe brand products?
Sanhe is looking for overseas distributor and agent. If you are interested in it, please feel free to contact us.
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