The high-pressured shunted capacitor installs the low pressure side which changes in the transformer substation host, uses in carries on the idle work to the electrical power system to compensate, enhances the electrical network power factor, reduces the line to damage, the improvement voltage quality, fully displays the generating plant the efficiency. The shunted capacitor installs the complete set supply, has provided the convenience to the electric power department, at present some 220 ~ 500 kV transformer substation widely uses the large-scale power capacitor complete set installment, since has turned oneself in transports, mostly safe stable, the movement situation is good.

1 complete set capacitor installs structure pattern and characteristic
1.1 bulk frames complete capacitors
The bulk frame posture complete capacitor installment, will be refers brings the iron casing the list Taiwan Telegraphic Transmission vessel to lay aside according to the certain order on the frame, the equipment all around will establish the railing. This kind of product in domestic application scope broadest, each place has the rich movement experience, and the movement effect is very good. Complete set installment layout clear, the safe distance and the insulation distance are bigger, because uses Shan Taiwai to melt the silk protection, when the capacitor breaks down, outside melts the silk to hint the sign to fall down, the movement personnel can very quickly discover the breakdown capacitor and the prompt replacement, reput the operation for the installment to strive for the time. This edits is this pattern product deeply the main reason which welcome.
The bulk frame posture complete set installment shortcoming is the area is bigger. In order to save 占地, may carry on the multi- Taiwan Telegraphic Transmission vessel the high level arrangement, the equipment lamination installment on the iron stand, is convenient for the overhaul, about are not generally many to 3, the level laying aside generally is 2 rows, guaranteed radiates convenient which good and the movement patrols. South the Sushui 500 kV transformer substation, guarantees 220 kV transformer substation, the Tangshan small Mafang 110 kV transformer substation and so on uses is outside the high level arrangement frame posture complete capacitor installment.
1.2 volumes of suitable shunted capacitors
The collection is suitable (called crowded) the shunted capacitor by the internal capacitor unit, the frame, the box body and the going beyond a line drive pipe is composed, its contour likes a Taichung transformer, box in vivo fills the transformer oil, gets up the insulation and the cooling effect.
In the shunted capacitor uses the small part to add melts the silk the protection. In the capacitor unit each small part string has a melt silk, when some small part penetrates, other complete parts to its electric discharge, cause the melt silk rapid separation, the excision breakdown part. Because the capacity only has the small change, therefore installed still can continue the normal operation.
In recent years the collection suitable complete set installment product day by day diversified. If presses may divide into single-phase and three-phase, 35 kV voltage rank generally for three-phase, 110 kV voltage rank product for single-phase. May divide into the entire seal and half seal type according to the leak-proof quality, the entire seal structure is refers to the installment box body outer covering the connection to use the welding manner, but half seal structure box body crown uses the bolt and the box body is fixed, the accident occurs when may turn on the box lid to carry on the breakdown service in under the factory technical personnel's assistance. 35 kV voltage rank according to may divide into the entire insulation and half insulation product to the place certainly fate; May divide into the fixed capacity, the tap accent according to the capacity allows with the change-over switch accent to allow 3 kind of forms, the accent to allow the type product the appearance to be possible to avoid because the capacity fixedly, is unable to give dual attention to the station construction initial period and the final stage load difference is bigger, the initial period installment does not throw disease.
The collection suitable capacitor merit is the area small, installs the maintenance to be convenient. Is suitable compensates to the transformer substation outdoors centralism, specially is suitable for the electrical network transformation project. East for example guarantees (grandson village) 220 kV five issues to rebuild the project, because the host changes the increase, causes the idle work capacity demand the increase, the design to consider uses the crowded product, has fully used this equipment area small characteristic, in the existing space has established 2 group of TBB in the station - 10 - 7,200 - 3W crowded complete set installment, because protected from fire is away from anxiously between, changed in the installment and the host has established the firewall.
The collection suitable capacitor also has the shortcoming which it is unable to avoid: If in the movement, the equipment once appears the breakdown, breakdown is not easy to search, also must carry on to the equipment hangs the core and insulating oil purification processing, but the user often does not have voluntarily to maintain repair the condition, only can with the factory relation, bring inconveniently to the movement. This also is many users is not willing to use this pattern product the main reason.
The collection suitable capacitor also has many years movement experience in the electrical network, compensates a capacity smaller middle and small scale transformer substation in particular in some idle works
Center, the movement situation is very satisfying. The Shijiazhuang electrical industries bureau uses the collection suitable capacitor installment to be more, my courtyard design Xinji 220 kV transformer substation second phased project, the Hengshui 220 kV transformer substation technological transformation project, the Baoding 110kV industry stands the crowded capacitor complete set installment which uses is outside arranges.
1.3 semi-enclosed types complete sets installment
Semi-enclosed type capacitor quite Yu kuang the posture installment neutrality will put the capacitor will lie on one's side puts, and the charged partial seals in box in vivo, its outlook will like at the same time the high-voltage switch cabinet. In outside the installment the list Taiwan Telegraphic Transmission vessel for lies on one's side puts, inserts the box body two sides, the drive pipe to the drive pipe, the bottom of a chest faces. The so-called half seal is refers the capacitor charged partial seals in box in vivo, but the hard box partially exposes in box in vitro.
This product merit is the area small, the installment service is convenient outside, may use melts the silk to do primarily protects, also does not have to establish the oil storage facility. South Hebei Province the net Handan electrical industries bureau uses this equipment pattern many, "04" always falls by my courtyard design Dan Hantan steel 220 kV presses the station, as well as the stone steel 35 kV transformer substation uses the semi-enclosed type complete set installment which is in the room arranges, a Xinji 220 kV transformer substation issue of project uses the semi-enclosed type complete set installment which is outside arranges, since has turned oneself in transports, the movement situation is good.
The first years, some local movements semi-enclosed type capacitor installments have the accident one after another, the Shijiazhuang electrical industries bureau station transformer substation have this pattern product when throws transports to have the detonation accident. Its reason as follows:
(1) as a result of the equipment half seal, causes the equipment the radiation condition not to be good, is easy to occur congeals the dew phenomenon.
(2) because installs completely seals up by no means, the humidity and the dust still might enter box in vivo, in the complete set installment the list Taiwan Telegraphic Transmission vessel for lies on one's side puts, end went beyond a line the drive pipe vertical arrangement in a straight line, if the drive pipe porcelain skirt accumulated the ash to be easy to have 闪络 the phenomenon.
(3) lies the list Taiwan Telegraphic Transmission vessel which puts, if the drive pipe leading-out terminal seals densely is not firm, is easier to occur infiltrates the oil leak the phenomenon.
(4) is opposite to the equipment which standing puts, oil mass how many has a more tremendous influence to the internal small part.
Thus it can be seen, the semi-enclosed type complete set installment product quality and the structure also wait for the enhancement, the improvement, for causes the movement to be more reliable, at present when design generally does not recommend uses this pattern product.

2 complete sets capacitors install arrangement way and characteristic
Outside 2.1 arranges
Will form a complete set the condenser bank open-air installment to outside, will have the construction construction work load to be small, saves the project construction cost the merit. At the same time, the equipment ventilates the radiation condition in the movement to be better, the wind and the rain also can carry on the natural flushing to the equipment. But equipment outdoor environment influence bigger, especially along with industry development, pollution degree day by day serious, the equipment movement condition is worse, therefore set a higher request to the equipment. Said on the present capacitor product quality, only if the special local special environment, generally can satisfy.
Outside at present installs the movement the capacitor complete set installment in each place widespread use, greatly to 500 kV transformer substation, slightly changes to the user, the movement effect is all good.
In 2.2 room arranges
The capacitor installs Yu Shinei, the equipment not the sleet dust attack, cannot have 闪络 the phenomenon, the movement is safer. In some special outside areas if the equipment cannot satisfy installs the condition, uses in the room to arrange.
In the room the arrangement must consider the building and its protects from fire 机械通风 and so on the question, this increased the project construction cost without doubt. In my courtyard design 220 kV transformer substation the shunted capacitor majority of uses the bulk frame posture complete set installment which is in the room arranges.
2.3 other
Needs to propose is half open-air arrangement, it was equal to the capacitor which installed for outside has built a visor awning. All around builds approximately 1 m high fence in the capacitor, the brick wall and the room is of use the wire netting to obstruct encircles, roof prop on brick wall. Uses half open-air arrangement, the equipment may exempt the summer sunlight is exploded exposes to the sun, but simultaneously has lost the rain water nature flushing condition, the equipment easy product dust, appears 闪络 the accident.
Half open-air installment is suitable for the summer multi- high temperatures, spring few sandstorm also contamination rank lower area, like our country certain south areas. The Shijiazhuang bureau's east temple 220 kV transformer substation uses is this kind of arrangement pattern, has thrown since 1985 transports moves the situation to be good.
"Shunted capacitor Installment Design Standard" in 8.1.2 articles showing, after analyzes certain projects to use the question which half open-air arrangement appears, obtains "this kind of arrangement pattern not suitably uses in the design" the conclusion, therefore, this arrangement method generally is at present not selected in the design.

3 complete sets capacitors install shaping and arrangement
3.1 complete sets capacitors install shaping and arrangement principle
At present, the bulk frame posture shunted capacitor and the crowded capacitor have the good movement achievement, the product quality quite is all reliable, chooses what kind of pattern the complete set installment besides to have to consider the transformer substation the overall layout, but also must consider the user the movement custom and the experience. The arrangement of equipment way choice should rest on the equipment the performance, the environmental condition. In order to control engineering construction cost, so long as the equipment performance permission, should first promote uses outside the room to arrange.
When 3.2 choices and arrangement installment should pay attention several questions
3.2.1 when capacitor for electric cable 进线, should pay attention even if the low pressure generatrix side has established the switch and the isolation knife switch, best establishes group of single-pole earths again in the capacitor electric cable 进线side the isolation knife switch, 中��?the side also should establish a single-pole earth knife switch. Before only when the electric cable 进线and 中��?the side establishment four-pole linkage earth knife switch, overhauls the capacitor, power source side not obvious cut-off point, moreover this time four-pole knife switch is the closed position, does not conform to the movement overhaul standard.
3.2.2 when the capacitor arrangement is leaving the low pressure power distribution equipment farther also is high
Presses the electric cable quantity to compare the youth, if selects the method which straight buries, the high tension cable puts on the long tube to be able to the construction to bring the very major difficulty, this time may along the way make section of high-voltages 缆沟, reduces the electric cable to put on the tube the length, also may use puts on the way which the tube and straight buries unifies. If the high tension cable quantity are more, may make the high-voltage 缆沟 until the capacitor installment, but should pay attention to the trench edge the gallery spacing to be supposed not to be smaller than to the condenser bank outside 2 m. According to the standard request, directs to the capacitor equipment place electric cable, should use puts on the tube to lay, 埋管the corner radius should satisfiedly be bigger than 15 time of caliber the requests. Two electric cables should not lay in the high-pressured ditch, may alone make the ditch or use puts on the way which the tube and straight buries unifies.
3.2.3 "Shunted capacitor Installment Design Standard" 9.1.7 stipulations that, Uses the collection suitable capacitor to be supposed to establish the oil storage or to keep off the oil facility, is stems from prevented when accident the insulating oil to all around scatters, and causes the fire spread consideration. But according to "Thermal power plant And Transformer substation Design Fire protection Standard" 5.6.8 "outside the room the single oil mass is above 1,000 kg electrical equipment should establish the oil storage or keeps off the oil facility" the stipulation, considers the crowded capacitor product quality in the design the enhancement and many years movement experience, for reduced entire project construction cost, when uses the entire seal structure product or the oil mass is smaller than 1,000 kg half seal structure product, may directly the arrangement of equipment in the cement foundation, but no longer establishes 储油�? Because after the entire seal installment accident, the scene radically is unable to carry on hangs the core and the insulating oil circulation filters and so on the work, only can replace the new product or return the factory service.
Outside 3.2.4 uses the complete set installment which installs, when installment arrangement should consider the complete set equipment is away from the question with other buildings and various voltages rank power distribution equipment fire protection. Outside the frame posture complete set installment arranges when must consider the guard micro-organism attack occurs short-circuits the accident, like the bird mouse class activity is frequent, should when the complete set installment ordering, proposed like all around and the crown establishes the lattice in the capacitor to encircle blocks, the capacitor base to the place highly and so on the request, as far as possible reduces the accident the occurrence.
3.2.5 in under the wiring form determination condition, the equipment shaping and the arrangement often is close connected with the transformer substation general arrangement, simultaneously suitably considers the user the movement custom. Should act according to the transformer substation the actual situation, the synthesis considered the equipment the shaping and the arrangement, causes to choose the equipment fully to display its characteristic, achieves the movement security, the investment economy goal.