CN201877836U - 35/66kV magnetic shielding parallel connection reactor - Google Patents

Abstract

The utility model relates to a 35/66kV magnetic shielding parallel connection reactor, which comprises three phases of reactors: A, B and C, wherein each phase of reactor respectively consists of an upper section and a lower section, the upper section and the lower section of each phase of reactor are connected through a star-shaped frame, and in addition, high-conductivity magnetic cores are respectively arranged inside and outside a wire wrapper of each section of reactor. After the 35/66kV magnetic shielding parallel connection reactor disclosed by the utility model adopts the technical scheme, because the shielding type parallel connection reactor is adopted, in addition, each phase of reactor adopts a two-section design, the area of occupied ground is more perfectly saved.

Description

35/66kV magnetic screen shunt reactor

Technical field

The utility model relates to a kind of 35/66kV magnetic screen shunt reactor.

Background technology

China 500kV transformer station adopts 500kV/220kV/35(66) the kV tertiary voltage, low-pressure side inserts reactive power compensator, is the important component part of transformer station.

In transformer station's design, generally stress the design optimization of voltage levels at present,, improve reliability, reduction floor space, the project cost that reduces of transformer station by optimizing measures such as wiring pattern, employing compact device, compression power distribution equipment size.But the main transformer low-pressure side is still continued initial thinking and pattern, all adopt conventional equipment and conventional power distribution equipment, there is no obvious development for many years changes, floor space is big, as adopting in the 500kV transformer station of compact device in the high pressure side, the occupation of land of main transformer low-pressure side reaches 26 ~ 31% of the full station gross area.

Along with the high speed development of power grid construction, transformer station's scale and capacity are increasing, and the problem that main transformer low-pressure side equipment increases, floor space is big is also more and more outstanding.Because the soil is non-renewable resources; for further implementing the fundamental state policy of rationally utilizing the soil, protecting farmland conscientiously; press for the optimal design of carrying out the main transformer low-pressure side, the solution of these problems will promote the global design level of transformer station, improves operational reliability.

The low pressure shunt reactor is one of reactive power compensator important in the 500kV transformer station, and the absorption electrical network residue charge power that main effect is a ladder guarantees that voltage is stabilized in the scope of permission.Because of it is installed in the main transformer low-pressure side, thereby be called lowly anti-, to be installed on high-tension side height anti-to be different from.For 500kV transformer station, the low anti-form of using in the engineering has " dry-type hollow formula " and " oil immersion iron core formula " two kinds at present.

(1) oil immersion iron core formula shunt reactor

The structure of low pressure oil immersion core-type reactor is similar to transformer, mainly is made up of parts such as coil, iron core and fuel tanks, have reliability height, equipment size little, arrange advantage such as compactness.

The anti-main inferior position of oil is to cost an arm and a leg, and in the oily antibody a large amount of insulation cold oils is arranged simultaneously, during installation oil sump and fire compartment wall need be set, and noise is very big when moving in addition, currently only uses to some extent in the small part area.

(2) dry type hollow shunt reactor

Dry type hollow shunt reactor is phase structure, adopt cylindric epoxy resin enclosed formula coil, reactor is sealed by several coils that constitute concentric structure and is composed in parallel, no iron core, magnetic conductive media is an air, and whole reactor is simple in structure, compact, can long-time running out of doors under the weather conditions, plant maintenance is simple and convenient, and project cost is relatively cheap.Because above-mentioned advantage, conventional doing resists by " 330 ~ 500kV electric substation reactive power compensator designing technique regulation " (DL5014-92) the preferential recommendation, and engineering extensive use at home.

Conventional do anti-shortcoming also clearly, itself size is bigger, and must satisfy mutual antimagnetic distance, generally is arranged as " isosceles triangle " or " in-line ", takes up an area of bigger.As Fig. 1--shown in 4, among the figure, what the frame of broken lines of reactor was represented is antimagnetic distance.

Summary of the invention

The purpose of this utility model provides the little 35/66kV magnetic screen shunt reactor of a kind of floor space.

For achieving the above object, the utility model is by the following technical solutions:

The utility model comprises A, B, C three-phase reactor, and described every phase reactor is formed by two sections, connects by starframe between the two sections of every phase reactor; And be equipped with high conducting magnet core inside and outside the line bag of every section reactor.

Described A, B, C three-phase reactor are " product " font and arrange.

Described A, B, C three-phase reactor are " one " font and arrange.

Adopt the utility model of technique scheme, owing to adopt magnetic screen formula shunt reactor, and two sections designs of every phase reactor employing, so can save floor space better.The utility model and prior art compared obtain following table 1.

Table 1

As can be seen from Table 1, the utlity model has following advantage:

(1) the magnetic screen reactor has been realized the miniaturization of equipment and the densification of layout, has significantly reduced the main transformer low-pressure side and has arranged size, meets the fundamental state policy of " rationally utilize the soil, protect farmland conscientiously ".

(2) the magnetic screen reactor has rationally been controlled equipment manufacturing cost and construction investment, and the magnetic screen reactor is done anti-a little more than routine, but anti-far below oil.

Description of drawings

Fig. 1 is the structure chart that dry type air core shunt reactor arranged in available technology adopting " product " font.

Fig. 2 is the floor plan of Fig. 1.

Fig. 3 is the structure chart that dry type air core shunt reactor arranged in available technology adopting " " font.

Fig. 4 is the floor plan of Fig. 2.

Fig. 5 adopts the structural representation of " product " font for the utility model.

Fig. 6 is the floor plan of Fig. 5.

Fig. 7 adopts the structural representation of " one " font for the utility model.

Fig. 8 is the floor plan of Fig. 7.

Fig. 9 is the structural representation of reactor line bag.

Figure 10 is the half sectional view of reactor line bag.

Embodiment

As Fig. 5, shown in Figure 7, the utility model comprises A, B, C three-phase reactor 1, and above-mentioned every phase reactor is formed by two sections, connects by starframe 2 between the two sections of every phase reactor; And be equipped with high conducting magnet core inside and outside the line bag 3 of every section reactor.

Need to prove that segment structure is basic identical up and down for every phase reactor, be the concentric structure of multilayer line bag formation, inside and outside be provided with in iron core 4 and outer iron core 5, the reactor magnetic resistance is reduced greatly, also reduce the magnetic field of space outerpace simultaneously greatly, play the effect of magnetic screen.

The utility model mainly contains following technical characterstic:

(1) high magnetic conduction shielding cylinder: the topmost characteristics of magnetic screen reactor are the high magnetic conduction shielding cylinders of the inside and outside installing of online bag, and inside and outside radome is to become drum type brake by the lamination closed assembly, after tightly wrapping with the glass filament bundle that soaks into epoxy resin and line bag integrally curing form.

The first, because existence unshakable in one's determination is arranged, the magnetic resistance of reactor is littler, and for given reactance value, the required number of turn of reactor is relatively less, thereby the reactor bulk volume is littler. The second, owing to high magnetic conductivity unshakable in one's determination, magnetic flux is most of to greatly reduce the leakage field in the peripheral air through formation unshakable in one's determination closed-loop path, thereby can reduce equipment room and arrange size. Based on above-mentioned two reasons, than conventional dry-type air-core reactor, magnetic screen reactor floor space can significantly reduce.

(2) two-part general structure: at first, single-phase reactor is divided into two sections, can make separately, is convenient to the coiling of coil, and workmanship is reliable and stable; The second, the two-part structure leaves intersegmental air flue, and radiating condition is good, and Temperature Distribution is more even, can prevent hot-spot; The 3rd, the two-part structure can increase device height, reduces line bag outer surface voltage gradient, is conducive to stop the creeping discharge phenomenon; At last, by adjusting the two sections structure pitch, the whole reactance value of adjustable reactance device makes it more accurate.

Cloth at the magnetic screen shunt reactor is set up, and can adopt " product " font to arrange, perhaps " one " font is arranged.

Claims (3)

1. A 35/66kV magnetically shielded shunt reactor, which includes A, B, and C three-phase reactors (1), characterized in that each phase reactor is composed of upper and lower sections, and each phase reactor The upper and lower sections of the reactor are connected by a star frame (2); and the wire package (3) of each section of reactor is equipped with a high-permeability core inside and outside. 2. The 35/66kV magnetically shielded shunt reactor according to claim 1, characterized in that the A, B, and C three-phase reactors are arranged in the shape of "pin". 3. The 35/66kV magnetically shielded shunt reactor according to claim 1, characterized in that: said A, B, and C three-phase reactors are arranged in a "one" shape.

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