Magnetic controlled automatic tracking tuning arc-suppression coil
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Magnetic controlled automatic tracking tuning arc-suppression coil
The first 66kV magnetic controlled automatic tracking tuning arc-suppression coil (1900kVar/66kV) in China had been put into operation in the Taipingshao 66kV substation of Dandong Power Supply Branch of Liaoning Province Power Supply Company in Jan 29, 2008.
The 66kV magnetic controlled automatic tracking tuning arc-suppression coil thatwas put into use is firstly witnessed at home and was jointly developed andmanufactured by Dandong Power Supply Company, Dandong Xintai Electric StockCo., Ltd. and Wuhan University.
Asreported, the adjustable arc suppression coil commonly used for the mediumvoltage distribution network in our country mainly adopts adjusting gapped-core type and multi-tap type. The adjustinggapped-core type arc-suppression coil changes magneticresistance through the movement of iron core toreach the purpose of inductance continuous adjustable, arc suppression coil istransferred to full compensation under normal condition, and the loop seriesconnection of arc-suppression coil resonance of anti-resonance. Thedisadvantages of the product are loud noise，poorreliability, virtual earthing and so on. The only difference between multi-taparc-suppression coil and adjusting gapped-core type arc-suppression coil is tocontrol winding turns by using load voltage regulating switch to adjust inductance.The working method of it is as same as the adjusting gapped-core type, alsousing series resistance to restrict the resonance overvoltage. Although, theproduct solves the problem of noise, but still has the disadvantages ofinductance continuously adjustable, comp, virtual earthing, etc.
The new magneticcontrolled fast auto-tacking tuning arc-suppression coil is the combination ofmodern electric controlled technology and double grade magnetic saturation technology, using self coupling type DC excitation control mode to realizefast response and continuous adjustment of arc-suppression coil inductance. The product is using a dynamic full compensation mode, which solves inherent contradictions fundamentally between the ideal goal of full compensation and the systemvirtual earthing caused by series resonance. The impedance of the magneticcontrolled arc-suppression coil is very large during normal operation of the network, which completely eliminates the hidden trouble of series resonance without series resistance. The system ofmeasurement and control measures the capacitance current of power network withhigh precision. When the single phase grounding occurs in electric powernetwork at the instant, the arc suppression coil is adjusted to fullcompensation from high impedance condition in half power frequency period, evenif the output current of the arc suppression coil is equal to the groundingcurrent of it, the residual current is smallest.
The product has the features of large range of capacity control,small humorous（≤2 %）, fast response（≤0.01sec.）,high precision of compensation, no series resonance, high reliability and freemaintenance. It is a kind of ideal equipment to ensure electric power networksafety operation as the upgraded product of existing arc suppression coil, the technical performances reaches the international advanced level.
Otherwise, thecompany has already developed and produced successfully MCR of 7500kVar/6kV, 12000kVar/10kVand 20000kVar/66kV, among them, 20000kVar/66kV MCR will be put into operationin the National Key Project. The MCR technology of the company has reached theinternational advanced level on the aspects of performance index, voltagegrade, capacity, and realized function. It provides effective measures and guaranteeto realize energy saving and consumption reduction in power system, and safeand reliable operation.
- Q: could an electrical engineer work in mechanical engineering?
- The specialization is different, so that an engineer of one field will have to do courses or be trained to perform in other field.
- Q: Downstairs 4 outlets and 4 of the lights stopped working. One of the outlets that doesn't work has the top plugin socket working but the bottom one doesn't. Also 2 lights still work even though they are in rooms where the sockets don't work. At the time we did have two computers running from the outlets and maybe some other electrical stuff. When the electrical went out we heard electrical sparking sounds.Then like a couple months later it happened again but upstairs. The lights and outlets stopped working in 2 bedrooms and the bathroom. I don't think we had very much electrical equipment plugged in just maybe a hair straightener.If I reset the breaker the switch will move to where its supposed to be but nothing happens.How much money should I have on hand for the electrician approximately? $200? $1000?
- The key piece of information was the sparking sound. What you've got is a VERY common problem. A bad (loose) connection some where. Most likely at one of the receptacles. Since you've had the problem in more than one room, more than one circuit it's a good idea to have an Electrician come in and deal with it. Code allows us to attach the in coming wires to one set of screws on a receptacle and attach the out going wires to the other set of screws. Or worse yet, to push the wires into little holes in the back of the outlet, often referred to as back stabbing. That means that power is dependent on the connections on the recep. to pass from box to box. If any one of those 4 connection points fails everything down stream looses power. The cure is to splice all incoming and outgoing wires, add apig tail (short piece of wire) to the splice and attach it to the outlet. Much better connection and now the recep. is attached TO the circuit as opposed to being part OF the circuit. A really good electrician can make this change in a few minutes. Not counting moving furniture or dealing with other problems they might encounter. I strongly recommend having them make this change to all outlets in the house. Count up the # of outlets and multiply by 10 minutes each. THIS IS JUST a ballpark figure! I'm not there and can't say for sure! Could very well take longer but not a lot. Personally I can make the change and replace the receptacle in as little as 5 minutes, but I've run into situations that took MUCH longer. But now you have a MINIMUM time to work from. If the house is old or if the outlets have been painted over, this would be the time to change them. Available colors now include almond and light almond which in my opinion look much better than the common ivory. Hope I've been of assistance.
- Q: I need to know what object or whatever uses light energy that then leads onto electrical energy that then leads onto kinetic energy in order to work, what equipment does that? I said a Solar powered calculator but it was wrong so i'm really confused, could anyone help?:/
- I think the simple example is: When Light incidence to the photo cells(Viz: photo transistor or diode biased by this incidence of light), photo electric effect occurs-----Due to photo electric effect, photo transistor or diode produces eclectic current(i.e electrical energy) -----This photo transistor/diode acts like a driver of the audio oscillator and triggers the power audio oscillator------then produces audio frequency of specific or variable frequency according to the design----this audio oscillator frequency/ies signal hooked (interfaced) to the matched loudspeaker------Now we hear the sound which is a mechanical energy. I think this is one simple example for your question. Thank you. [You will find above:the conversion like this: Light energy--Electrical energy ----mechanical energy].
- Q: If the poles switch will al of our electrical equipment still work? Or will it run in revers. Will migratory animals go the wrong way?
- Of course compasses will have to be redone. It is only speculative that migratory animals will suffer, but it is likely at least some of each species will adapt or use other means for guidance. Electronic and electrical devices should be OK provided that there isn't some large electromagnetic pulse generated by the poles reversing. Even if there is, anything not damaged will work fine after the poles settle.
- Q: I am about to finish my BS in Electrical Engineering and was considering getting a MS in EE but considering how the economoy is and the fact that the Bureau of Labor Statistics say it should grow slower than average. This being said what do you guys think is the most prudent thing to do in my case. Go for an MS Engineering Degree or start out with another degree maybe in healthcare.
- Skip the Masters in Engineering get an MBA. This will enable you to get a high paying executive management position in the Engineering Industry, instead of an Engineering design position (less pay more headaches). Good luck.
- Q: How long did it take you to complete? What job do you have now? I am interested in going to school for that and wondering what type of jobs I might have.
- It took me 4 years to complete I am in a leadership development programing at a large aerospace company A lot of my classmates got jobs in the defense industry. Most are working in computer enigneering, rf design, or software
- Q: A. Lockout/Tagout involves placing a physical lock and a tag on electrical equipmentB. Lockout/Tagout is necessary prior to working on electrical equipmentC. Lockout/Tagout is intended to ensure that electricity is not returned to the equipment by anyone until it is safe.D. Lockout/Tagout is to be used only in extreme cases of potential electrical hazard.
- D is not true - a lock out tage is used whenever applying electricity to the circuit would result in dangerous conditions. When repair work is being done on the circuit equipment for example. Lock out tage are used for more then just electrical too.
- Q: (without using any connection wires)? I frequently need to plug existing electrical equipment in places where there is no power outlet I have to use clumsy long tailed electrical extension plug that hinders free movement ? Short of using a battery in the equipment how to connect the power junction points (earth live neutral to an existing electrical power outlet using nothing but air in between)?
- Air is not a very good conductor. When you generate a spark, you are finally overcoming the insulative value of air and establishing an electrical connection through ionization. Anyone who has seen lightning can appreciate the randomness of the path of this connection. If there are any nearby conductors, the electricity will jump to them. An option for you would be to convert your power into some sort of form that you could beam towards a receiver (laser or microwave comes to mind). A receiver would then take the energy from the signal and convert it back to usable power for your device. A lot of energy will be lost in this process.
- Q: anyone knows some practical situation when a resistance maybe used to model part of a circuit, a component or electrical equipment
- english.cxem /infrared/ir3-5.g Anita
- Q: If i were to give a hybrid vehicle to a teenager, and they decided to add a bunch of high powered electrical equipment:1. Does this utilize the same battery that the car motors use to propel the car.2. Do gas-electric hybrids have alternators capable of generating electricity while the car is running?3. What are the limitations of adding additional electrical accessories to the car? ie. DVD players, video screens, amplifiers, extra power outlets for laptops
- 1 Yes there is a seperate battery for auxillaries and a seperate battery that runs the electric motor/charger. 2 the alternator that runs the auxillaries is a normal 60 to 90 watt unit. It cannot charge the batteries that drive the car. 3 no differant than addind to a regular car.
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Magnetic controlled automatic tracking tuning arc-suppression coil
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