• Magnetically Controllable Reactor System 1
Magnetically Controllable Reactor

Magnetically Controllable Reactor

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Magnetically Controllable Reactor

MCR

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.


Q:I recently came across an article that many Jews are now reevaluating whether electricity really is tantamount to lighting a fire, a forbidden act on the Jewish Sabbath, due to advances in our understanding of electricity through modern science. Is anyone aware of changing opinions on the use of electricity on the Jewish Sabbath? Are some Orthodox groups really changing their position?
Please read the verses up to and past Jeremiah 8:8. Read all the versions. KJV is s poor translation. What do you think a lying pen of the scribe that works falsehoods is? The people did not know the true law of God because of them. Think about this for awhile and read the first few chapters of Levitcus to a child and see what they think. Follow God, not the lying pen of the scribes that changed scripture! Edit: I said KJV was bad translation did I not? I am not a Jew either. I just try to use common sense and follow what Father and Yeshua (Jesus) said. Can you not tell the things they did not say? BTW: Why not be concerned about Father's Law over Jewish law? I also believe in and keep the seventhday sabbath and do not and will not attend any church. Do you follow man or do you follow Father in Heaven? That is the question we must ask. I dare you to study Jere. 8:8 with an open mind and heart. If not, you just don't care to follow the true Father in Heaven. That is up to you. Look at Annt: This is the perfect example of man made law. You have got to be kidding. It is total non-sense. Wake up and listen to what Father places in all of our hearts, not to man made non-sense.
Q:Hi all, i wish to travel to the states soon and would like to bring some electrical items back, as-well as clothes when i travel to New York. From research i have already learned that these goods brought back into the UK can total ?340. But my question is this, if i travel to the US with very little luggage - no clothes or electrical equipment. Then in New York i buy a nice laptop, ipod touch, digital camera (but take the electrical stuff in with my hand luggage) how will they be able to know if the items i want to bring on the plane were in fact brought with me from the UK to US and were already mine?Also if customs say that i have to pay tax for going over the ?340 - how much will it be? say e.g. on a $2000 laptop?
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:i have System:Hifonics BXi 2608D 2600 Watts RMS Mono Car Amplifier4 ohms: 850 watts x 1 chan. 2 ohms: 1700 watts x 1 chan. 1 ohm: 2600 watts x 1 chan2 KICKER S12L7 12 Solo-Baric Dual 4 ohms750 RMS 1500MAX a pieceI have it on a 5 farad capacitor but i believe that capacitor is a waste cause my lights dim very badly. I realize that kinetik has all different battery sizes. Whats the best battery to get if i run the battery on my my system only.and also what size should i get if i want to run on my car and system i still havent made my mind of
To minimize the dimming, you can do the Big 3 upgrade. A deep cycle battery would be best. Now if the battery is going in the cabin, I would get an AGM or SLA. I would get a larger alternator if your charging the battery with the car. Now the size of the battery, I would get a 100-120Ah battery. I get this estimated Ah by taking 1700W dividing it by 13.8V. I am going by the 750W speaker rating and not the 1500W.
Q:2)Please do include the details as to why does spark devlop wn connection at one end is loose. 3)How the +ve electrode retains itz polarity though it accepts the electrons continuously, in a closed circuit.
1) For laymen understanding, electrical grounding is a protection of your house against lightning, instead burning your house or someone inside your house gets fried. In your appliances, electrical grounding protects you from getting electrical shock in case one of the electrical wire touches the metal body of your appliance. Now on electronic grounding, it is a protection of a certain circuitry from getting damaged by an electrical charge from your body in case you touch it. 2) Electrical wire connection is like a water pipe connection. Electrical current passes through the wire while water current passes through the pipes. If there is a loose connection of a certain electrical wire, or loose pipe connections on your water pipes; The loose pipe connections will produce leaks while the loose electrical connections will produce sparks. 3) It always retain its polarity always. Just like magnets, it retains its polarity, north and south. Electricity is based on magnetism. Law of nature.
Q:(Warning: I have no knowledge of electrical equipment) I just bought a black light. It can fit into my lamp, but I noticed that the lamp had a label that read To reduce risk of fire, use a 60 watt type a lamp max. The bulb is 75 watts. Is it okay to use the bulb or should I not use it?
Don't use it. The bulb will get too hot for the lamp. The lamp must be rated the same or higher than the bulb.
Q:I am interested in buying a house and the village water supply enters the house right next to the electrical panel in the basement. I am concerned that this might be a code violation and not pass inspection. Any thoughts?
The six foot distance is for entrances, not equipment. (Betcha your electrical service enters overhead). In any event the existing installation is Grandfathered as Richard states. With an old house, it is prudent to make any pre-purchase agreement contingent upon passing an inspection. (You should get one done before closing. You're spending a lot of $. Don't skimp here.)
Q:I understand that the frequencies emited from cell phones can interfere with the electrical equipment in ICU's; however, why can't patients have regular phones in ICU's; regular chord phones shouldn't emit frequencies or do they?
no. ICU is an intensive care unit also known as critical care unit. Most of the time patients are so severly injured or poor health that they can not talk on the phone. That is also why you are only allowed 1 visitor. If the patient is starting to feel better or needs to make a call the nurses will put a phone in their room if they are waiting to be transferred to a regular room
Q:I am studying in college to become an electrical engineer but there is one problem, i'm almost clueless about what i'll do once i graduate. like at what kind of companies and places will i work at? what will i be doing? whats it like to be an engineer? what will be my dutys?. and also how much does an engineer (more specifically the kind in my field) earn? really need to know this. thanks
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