A kind of integrated-type energy taking device for power electronic equipment
Technical field
The utility model relates to field of power, is specifically related to a kind of integrated-type energy taking device for power electronic equipment.
Background technology
The TSC type thyristor valve of static passive compensation device (SVC) requires to trigger at the thyristor voltage zero crossing for the first time, naturally closes to have no progeny to current zero-crossing point after conducting and will trigger reverse thyristor maintenance electric capacity connecting system.Therefore adopt of high potential trigger board (TE plate) outsidely provides the mode of energy to work more, and namely adopting electric current to send can mode, and the electric current of getting independent low-pressure system is as the thyristor energy source that sets out.Does wherein energy supplying system comprise that mainly transformer (can delete by this transformer? perhaps become a thing), cable, get and can partly be mainly energy taking device.In existing scheme, energy taking device adopts punching, and the transformer output is primary side, and the annular core coiling is secondary side.Version has insulating material casting type and machine work type etc., and usage quantity high potential trigger board used according to thyristor valve (TE plate) quantity is determined.Machine work type energy taking device flexible structure, but be difficult for processing, cost is high, is applicable to the small lot trial product.The processing of insulating material casting type energy taking device is simple, is applicable to large batch of approved product.Above-mentioned two kinds of energy taking devices have the following disadvantages: 1, because usage quantity is many, need structurally design and installation separately mechanism, fixed form is comparatively loaded down with trivial details.2, cable need pass the center of all energy taking devices successively, and the central hole size of device will strictly be controlled, and concentricity requirement is high, the oversize partial discharge that causes, undersized cable threading difficulty.3, generally can be used for 10kV grade TSC thyristor valve body, the complicated innings value of putting of the above insulation coordination of 10kV grade is higher, and difficulty satisfies the electric property requirement.
The utility model content
For the deficiencies in the prior art, the utility model provides a kind of integrated-type energy taking device for power electronic equipment, is applicable to power frequency and send energy and high frequency to send energy, and its trigger board (TE plate) that is mainly high potential work provides work capacity.And the utility model possesses good electric and mechanical performance.
A kind of integrated-type energy taking device for power electronic equipment that the utility model provides, its improvements be, described device comprises power pack 1, cable fixture 2 and primary side terminals 3;
Being fixed by screws on described power pack 1 of the described cable fixture 2 of at least one; Two described primary side terminals 3 are separately positioned on the two ends of described power pack 1.
Wherein, described power pack 1 comprises annular core 5, hard conductor 6 of winding and secondary winding terminals 8; Be wound with secondary winding coil 7 on described annular core 5; Be filled with insulation pouring layer 4 between described annular core 5 and the hard conductor 6 of winding; Described annular core 5 outsides are provided with insulation pouring layer 4.
Wherein, described cable fixture 2 comprises geometrical clamp and switching fixed head;
Described cable fixture 2 one ends are enclosed within on described power pack 1, and the other end entangles cable, are used for attached cable.
Wherein, described power pack 1 adopts the epoxide resin vacuum cast.
Wherein, described primary side terminals 3 one ends are connected with cable, and the other end adopts the annulus hood type to be connected with the hard conductor 6 of a winding of described power pack 1.
Wherein, described energy taking device comprises the insulator umbrella 9 of at least one; Described insulator umbrella 9 is enclosed within on described power pack 1.
Wherein, described insulator umbrella 9 is the vertical ring structure.
Wherein, the lower end of described secondary winding terminals 8 is fixed on described insulation pouring layer 4 by pouring type, and is connected with described secondary winding coil 7, and the upper end is connected with the high potential trigger board by wire.
Wherein, the hard conductor 6 of a described winding adopts copper tube.
Compared with the prior art, the beneficial effects of the utility model are:
1, the hard conductor of winding of the utility model adopts copper tube (T2), and the copper pipe AC resistance is little, and power loss is little, and radiating condition is good, and mechanical strength is high.
2, in the utility model energy taking device, iron core and secondary winding quantity can be according to the adjustment of design needs, flexible structure, highly versatiles.
3, the whole epoxide resin vacuum pouring technology that adopts of the utility model energy taking device, avoided once and the air gap between secondary winding, and reduce inside and the defectives such as bubble occur, effectively reduces with lower innings value of putting of electric pressure.
4, the utility model cable fixture is connected with the energy taking device copper pipe, and contact surface area is large, and stressed between circle and circle evenly contact surface is greater than 10 times of cross-sectional area of conductor, and contact resistance is less than conductor resistance, and the connecting portion temperature rise is lower than conductor.
5, secondary winding of the present utility model is isolated mutually, guarantees enough safe distances.
6, energy taking device of the present utility model is simple in structure, and the installation wiring is easy, easily implements, and can shorten the production cycle.
Description of drawings
The integrated-type energy taking device structure chart that Fig. 1 provides for the utility model.
The integrated-type energy taking device power pack sectional view that Fig. 2 provides for the utility model.
The integrated-type energy taking device scheme of installation (vertical view) that Fig. 3 provides for the utility model.In figure, 11 for sending the energy cable, and 12 is high-pressure installation.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
A kind of integrated-type energy taking device for power electronic equipment that the present embodiment provides, its structure chart comprises power pack 1, cable fixture 2, primary side terminals 3 as shown in Figure 1; The present embodiment is take two cable fixtures as the example explanation.On the axial direction of power pack 1, cover has two by the cable fixture 2 of power pack 1 central point; Simultaneously, two primary side terminals 3 are separately positioned on the two ends of power pack 1, and each primary side terminals 3 one end is connected with cable 11, and the other end adopts the annulus hood type to be connected with the hard conductor 6 of a winding of power pack 1.The present embodiment has added the insulator umbrella 9 of six vertical ring structures in order to strengthen the insulation effect of energy taking device, and every three is one group, is enclosed within the two ends of power pack 1, plays insulating effect.
Fig. 2 is the sectional view of energy taking device power pack.As shown in the figure, the power pack 1 of the present embodiment comprises annular core 5, hard conductor 6 of winding and secondary winding terminals 8; Be wound with secondary winding coil 7 on annular core 5; Be filled with insulation pouring layer 4 between annular core 5 and the hard conductor 6 of winding; Annular core 5 outsides also are provided with insulation pouring layer 4.Wherein, the lower end of secondary winding terminals 8 is fixed on described insulation pouring layer 4 by pouring type, and is connected with secondary winding coil 7, and the upper end is connected with the high potential trigger board by wire.Secondary winding coil 7 is made special equipment (the full-automatic 12 axle coil winding machines of E-6012) coiling according to the parameter of energy taking device needs with instrument transformer.The good instrument transformer secondary coil of coiling must be through the check of instrument transformer special inspecting equipment, changes next process over to after meeting national standard.The hard conductor 6 of a winding of this enforcement adopts the T2 copper tube.Copper tube is hollow conductor, and surface area is large, and the conductive surface electric current distribution is even, and skin effect coefficient is low, and Kf<1〉AC resistance is little, and power loss is little.Internal diameter air channel energy self-assembling formation hot-air convection, radiating condition is good.The copper pipe allowable stress is 4 times of rectangular copper bar, and the short circuit current that can bear is large, and mechanical strength is high, makes to support the span increasing.
The power pack 1 of the present embodiment adopts the epoxide resin vacuum cast; When pouring into a mould, to pack into after annular core 5 in mould, hard conductor 6 of winding, secondary winding coil 7, secondary winding terminals 8 heat dryings, send in the special-purpose epoxy vacuum pouring equipment of instrument transformer (VPRC-150 type epoxy Resin Vacuum Pouring Devices), adopt the mode of vacuum pouring to inject in mould the epoxy composite material that configures, carry out Fruit storage, after reaching the vacuum degree of technological requirement, the taking-up mould is sent into the electric heating baking oven and is heating and curing, then demoulding deburring.The vertical ring insulator umbrella that the present embodiment arranges also helps stripping operation.
The cable fixture 2 of the present embodiment comprises geometrical clamp and switching fixed head; Cable fixture 2 one ends are fixed by screws on power pack 1, and the other end is used for entangling the cable 11 between transformer and primary side terminals 3, and 11, cable is supported fixation.
The integrated-type energy taking device scheme of installation of the present embodiment as shown in Figure 3, two primary side terminals 3 are located at respectively the two ends of power pack 1, can transformer 10 connect with sending by cable 11, wherein 11 fixations of 2 pairs of cables of two cable fixtures.Secondary winding terminals 8 on power pack 1 are connected with high potential trigger board (TE plate) by wire.High potential trigger board (TE plate) is arranged in high-pressure installation 12.The course of work of the present embodiment energy taking device is: the voltage and current in electrical network is passed to power pack 1 by primary side terminals 3 after sending the energy transformer to become low-voltage, high-current, the little electric current (120mA) that on power pack 1, secondary winding terminals 8 will produce is passed to the high potential trigger board by wire, is used for providing the energy of high potential trigger board.In the energy taking device course of work, be enclosed within the main insulating effect that rises of insulator umbrella 9 on power pack 1, improved the security performance of energy taking device.
The transformer 10 of the present embodiment is for sending the energy transformer, and its no-load voltage ratio is 220V/1.5V, nominal operation isolation voltage: 66kV.
The energy taking device of the present embodiment is applicable to power frequency and send energy and high frequency energy supplying system: the power frequency energy supplying system directly uses this device just passable, and its cost is low; Need increase high-frequency current transformer when the high frequency energy supplying system uses this device, cost is high, but can improve the reliability of equipment, generally is applied in the engineering of specific (special) requirements.
Should be noted that at last: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although with reference to above-described embodiment, the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement embodiment of the present utility model, and do not break away from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of claim scope of the present utility model.