Magnetically Controllable Reactor

Ref Price:
Loading Port:
China Main Port
Payment Terms:
Min Order Qty:
Supply Capability:

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:

Magnetically Controllable Reactor


1.   Summary

MCR is areactor whose reactance value or capacitance can be controlled and adjusted.

2.   New Type Controllable Reactor

Both the new type controllable reactor and traditional saturationreactor originate from the principle of magnetic saturation, but the designphilosophy and way of structure are different, so the working performances ofthem have obviously differences.

In the working process of traditional saturation controllablereactor, the iron core is in a state of magnetic saturation in a long term. Itslosses and current inertia to control winding are big, and the response time islong, therefore, it’s hard to fit for the requirement of the development ofpower grid system.

The new type controllable reactor was endowed with new theory ondesign. It adopts advanced conducting magnetic material and control technology,and overcomes the shortcomings of saturation controllable reactor. It has theability of auto smoothly adjusting self capacity with the changes oftransmission power of HV transmission line. The response time can be designedaccording to different system in 5ms~300ms, and its degree of automation ishigh. Because of its simple structure, the reliability is improved. Meanwhile,it not only reduces the volume, but also reduces the losses and costs. Thesuccess of research and production of the new type controllable reactor fillsin the blank of controllable reactor of our country.

3.   Application of  New Type Controllable Reactor

1. DynamicReactive Compensation of Transmission and Distribution System

Controllable Reactor

Detection and Control System

Figure 1 Diagram of Reactive Compensationof Controllable Reactor

Parallel the fixed capacitor and new typecontrollable reactor to transmission and distribution line, relying on thecharacteristic of adjustable self capacity, which belongs to the reactor, toautomatically balance no-load. The process is reactive compensation (such asFigure 1). The compensation process is: when the line transmits natural power,its reactance value maximizes, capacity minimizes, and the capacitive no-loadtaken in is also minimum. When the transmission power of line is very low, itsreactance value minimizes, the capacity reaches rated value, and it means thecapacitive no-load taken in maximizes. The new type controllable reactor hasthe characteristics of real time detection and quick response, so it can changeits own reactance value instantaneously to attain the aim of balancing no-loadfast and automatically.

The essence of new type controllable reactor is a special parallelreactor, and it can be paralleled to the HV or EHV transmission line directlytogether with the capacitor. Controllable reactor adopts LV DC control, and itis more suitable for HV operation than existing SVC compensation equipment. Thestructure of this kind of reactive compensation is simple, safe and economic,and it is ideal alternative products of reactive compensation of transmissionand distribution system.

At present, the voltage class which was researched and produced byour company and domestic some well-known university is 10kV110kV, and the maximum capacity is 300Mvar. The response time canbe set between 5ms and 300ms, and the control accuracy of power factor can besteadily controlled from 0.95 to 0.96.

2. Reactive Compensation of Metallurgy Industry

3. Reactive Compensation of Electrified Railway

4. Reactive Compensation of City Secondary Substation

5. Remote Power Transmission Compensation

6. Heavy load compensation of Mining, Communication andOther Enterprises

Miningengine, high power crusher, air compressor, oil pump jack and high powerinverse power supply used in communication service all consume a large numberof reactive electric energy and bring about grid voltage reducing and voltagefluctuation so that the power factor reduces and transmission device producesharmful higher harmonic waves. For power grid, all kinds of enterprises exist alarge number of reactive loads. These loads are the main parts of power gridload. To solve the problems above is to install compensation system nearsubstation of enterprise besides concentrated figuring reactive compensationsystem in transmission and distribution system. It is the most extensiveapplication space to controllable reactor dynamic compensation system.

7. Other Applications of Controllable Reactor

a. Voltage Adjustment and System Protection

Controllable reactor can efficiently restrict power frequencyovervoltage and operation overvoltage.

When the power grid operates normally, the capacity ofcontrollable reactor can make auto smooth adjustment according to the powertransmitted by lines so as to reach the level of steadying voltage. When theline transmit high power, if the condition of the end of three-phase trippingand load rejection turns up, the controllable reactor approaching no-load statecan fast adjust the capacity of reactor to a desired value by fast excitationsystem in order to restrict power frequency overvoltage.

Becauseof the compensation function of controllable reactor, the power frequencyvoltage of no-load line can be restrained so that the level of operationovervoltage of system is reduced, and the level of overvoltage is not more than1.6 times.
The controllable reactor can restrainthe potential supply current. It can largely reduce the potential supplycurrent when the line single-phase grounds matching with neutral-point smallreactance and some control way and it can cause the electric arc extinguishefficiently.

Controllablereactor can also efficiently remove the self excitation of generator. It isharmful for generator to produce self excitation when if operates with no-loadlines. The function of auto smooth compensation of controllable reactor canefficiently remove the condition and phenomenon of producing self excitation.

b. Save Electric Energy
The controllable reactor has the capacity of auto balancing system reactivepower, so it largely reduces reactive losses of system and improves powerfactor of system. It is the important equipment of energy saving and resumptionreducing.

4.  Production Level of New Type Controllable Reactor of Our Company

At present, the voltage class researched and produced by ourcompany and Wuhan university is 10kV110kV, and the maximum capacity is 300Mvar. We can also speciallydesign products according to parameter provided by users and offer controllablereactor of good performance. We’d like to devote ourselves to electric energysaving project with users, serving domestic power market with advancedtechnology and good production service, contributing to energy saving,consumption reduce and safe production of each industry and mining enterpriseand power department.

Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:Bringing items on plane from the US back to the UK?
They might have a suspicion that you are importing items back to the UK (rather than having taken them there in the first place) when looking at the US-style electrical plugs. Given that these are not the same kind of plug as is used in the UK, you might raise suspicion when everything you bring back has US plugs (instead of UK plugs with a US adapter). I'd also note that failure to declare goods purchased abroad may make you liable for fines levied by HM Revenue Customs, as well as Customs seizing the goods. For purchases above the £340 duty-free limit, the taxes paid depend on the total value. The second link below states that the duty paid on goods in excess of £553 depends on the type of goods imported, and that you should contact HM Revenue Customs directly to find out what duty would be imposed.
Q:Shop selling dangerous electrical equipment who do I contact?
Trading standards, local council. Local newspaper maybe if you are really unhappy about it they will for sure close the place down
Q:Is there a universal definition of electrical continuity, in terms of maximum ohms for the circuit?
The definition of electrical continuity is that the current will be closed by electrons and molecules. The ohms, is the resistance to the circut being closed completely, usually determined by a nominal factor in communication and audio equipment. 25 ohms is a high resistance. In other words, 4 ohm speakers will be almost twice as loud with the same applied volume than 8 ohm speakers. So your 25 ohm measurement is taking out most of the current. You are creating the resistance to the 100% continuity by 25 ohms. Ted Taff
Q:Why does modem/DSL need protection from surges?
If a heavy piece of electrical equipment in the vicinity (even a block away) suffers a serious failure causing a massive power surge, it can cause an inductive surge down ANY nearby cables. Considering ALL cables are often run underground, and have to be parallel to reach the same places, this can mean extremely high voltage spikes on the telephone cables, or cable tv lines. Also if overhead cables are used, a lightning strike a long distance off can present dangerous spikes on the line into the building. In a few buildings I have worked at, I have actually received a shock from an unterminated pair of network cables which where connected at the furthest end for testing. In one case it measured 110v with 240v power cables in use. I actually ran a small 110v light from it and then had 90v across the lamp. Really surprised me.
Q:Some large piece of electrical equipment has a peak power output of 2000 kW.?
Power voltage x current Therefore current power/voltage. Thus, if power is constant at 2000kW current at 480 volts will be: I 2000,000/480 4166.67amps At 240 volts: I 2000,000/240 8333.33 amps However, line losses are current (squared) x resistance Thus the ratio will be 4166.67 (squared) / 8333.33 (squared), resistance remaining constant of course. I make that 0.25 (or 4, if you are thinking that way up!) That help?
Q:Why are utilities monitoring your electrical power consumption?
You may need to update your electrical equipment for more efficiency.
Q:what equipment uses light, electrical and kinetic energy?
The calculator does not produce movement, kinetic energy. Although you could consider the flow of electric currents a form of KE. No good examples come to mind. Perhaps a toy auto powered by a solar cell. A cell phone charged by a solar cell, when it rings in the vibrate mode. (Vibrate mode is cause by a small motor rotating a weight)
Q:National Electric Code safety ground requirment on Driven equipment?
If there is no electrical connections to them then grounding is optional.
Q:How would a reduction in the magnetic field of the Earth affect the function of equipmen?
The magnetic field of the Earth is only an issue with things that measure or otherwise require the presence of the field, specifically compasses, only at that, only magnetic compasses. Most modern navigational equipment use gyrocompasses, which measure the rotation axis of the Earth and therefore, do not care whether a magnetic field exists. If the magnetic field were to disappear tomorrow, only magnetic compasses and certain geologists would be affected.
Q:could an electrical engineer work in mechanical engineering?
That can depend on where the engineer is working and what their work history is. In the company where I worked there was an electrical engineer who was considered an expert in all types of rotating equipment from pumps to compressors to turbines. He was also considered an expert in piping, pressure vessels and heat exchangers. All areas typically considered areas covered by mechanical engineers.

1. Manufacturer Overview

Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range