CN202870288U

CN202870288U - Totally closed 500kV electromagnetic voltage transformer test unit

Info

Publication number: CN202870288U
Application number: CN201220447511.4U
Authority: CN
Inventors: 禹敦国; 徐振泰; 张华君
Original assignee: SHANDONG DINGXIN ELETRIC SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: SHANDONG DINGXIN ELETRIC SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2012-09-05
Filing date: 2012-09-05
Publication date: 2013-04-10
Anticipated expiration: 2022-09-05

Abstract

The utility model relates to the technical field of an electrical test unit, and specifically a totally closed electromagnetic voltage transformer test unit, comprising a voltage booster, a standard potential transformer, conducting rods, a transition air chamber, an operating air chamber, etc. The transition air chamber is laterally disposed between the voltage booster and the standard potential transformer. The operating air chamber is vertically disposed on a lower part of the transition air chamber and is communicated with the transition air chamber. The transition air chamber and the operating air chamber form closed space. Basin-type insulators are horizontally disposed in the operating air chamber. The two conducting rods are vertically connected, one is horizontally disposed in the transition air chamber and is connected between the voltage booster and the standard potential transformer, and the other is vertically disposed in the operating air chamber. An upper end of the vertical conducting rod is connected with a middle part of the lateral conducting rod, and a lower end passes through the basin-type insulators, stretches out the operating air chamber and is connected with a tested mutual inductor. The totally closed 500kV electromagnetic voltage transformer test unit can complete various tests in a limited test site special scale, and is characterized by reducing engineering cost and improving work efficiency.

Description

The totally-enclosed electromagnetic potential transformer test unit of 500kV

Technical field

The utility model relates to a kind of electric test unit technical field, specifically a kind of totally-enclosed electromagnetic potential transformer test unit.

Background technology

Voltage transformer (VT) all will pass through various tests before dispatching from the factory, to satisfy the requirements of industry regulation.The routine test content that electromagnetic potential transformer should stand after by insulation type test comprises 1, the check of terminal sign; 2, winding power frequency withstand test; 3, measurement of partial discharge; 4 Secondary Winding power frequency withstand tests; 5, power frequency withstand test between winding segments; 6, excitation property is measured; 7, experiments of sealing performance; 8, error test.Except the 1st and the 7th content, all the be put to the test constraint of place environment of all the other tests, traditional test unit will repeatedly mount and dismount just in use can finish withstand voltage test and error test, wastes time and energy inefficiency; Traditional testing equipment is that the 500kV product is not less than 5 meters distances to operating personnel's requirement, and test space is had relatively high expectations, and has improved engineering cost,

Summary of the invention

The utility model provides a kind of and can finish every test in limited test site spatial dimension in order to overcome defects, has reduced engineering cost, the electromagnetic potential transformer test unit of high efficiency.

The technical solution adopted in the utility model is: a kind of electromagnetic potential transformer test unit, comprise stepup transformer, standard potential transformer, disc insulator and conducting rod, also comprise transition air chamber and operation air chamber, the transition air chamber is horizontally installed between stepup transformer and the standard potential transformer, the operation air chamber vertically is arranged on transition air chamber bottom and is communicated with the transition air chamber, transition air chamber and operation air chamber form the space of sealing, disc insulator is horizontally installed in the operation air chamber, conducting rod is two connected vertically, one be horizontally installed on the transitional gas chamber interior and be connected in stepup transformer and standard potential transformer between, another root vertically is arranged in the operation air chamber, be connected in the middle part of its upper end and the horizontal conducting rod, disc insulator is passed in its lower end, stretch out the operation air chamber and be connected by the test mutual inductor.

The conducting rod of described vertical setting is that two parts form up and down, and disc insulator is installed in up and down two-part junction of conducting rod.

The operation air chamber on, disc insulator below setting operation mouth flange.

End at conducting rod is provided with radome.

The utility model is by arranging the transition air chamber between stepup transformer and standard potential transformer, simultaneously at transition air chamber bottom setting operation air chamber, and make transition air chamber and operation air chamber form the space of sealing, conducting rod is installed in transition air chamber and operation air chamber inside, by conducting rod with stepup transformer, standard potential transformer connects with the tested product, and in the seal cavity that forms, be filled with SF6 gas as once the link to each other insulating medium in space of test unit, then carry out routine test, because the utility model is that full-closed structure is isolated from the outside, product N holds ground connection, the safe distance of operating personnel and test unit has not had restriction during test, traditional testing equipment is that the 500kV product is not less than 5 meters distances to operating personnel's requirement, so the design of this device has better guaranteed operating personnel's personal safety, dwindling of test space also reduced the engineering cost in test place accordingly; The utility model device can also be controlled break-make once by the control to conducting rod in the operation air chamber, so just can reach single job and just realize the withstand voltage test of product and the carrying out of error test have been improved work efficiency; Because the totally enclosed structure of the utility model can also be guaranteed not to be subjected to extraneous interference when product is carried out Partial Discharge Detection, need not to shield the support in hall, reduce project cost.

Description of drawings

Fig. 1 is synoptic diagram of the present utility model.

Fig. 2 is the cut-open view of Fig. 1.

Embodiment

Now by reference to the accompanying drawings the utility model is further described, Fig. 1 is a kind of embodiment of the present utility model, comprise stepup transformer 3, standard potential transformer 6, disc insulator 1 and conducting rod 7, also comprise transition air chamber 4 and operation air chamber 5, transition air chamber 4 is horizontally installed between stepup transformer 3 and the standard potential transformer 6, operation air chamber 5 vertically is arranged on transition air chamber 4 bottoms and is communicated with transition air chamber 4, transition air chamber 4 and operation air chamber 5 form the space of sealing, disc insulator 1 is horizontally installed in the operation air chamber 5, conducting rod 7 is two connected vertically, one to be horizontally installed on transition air chamber 4 inner and be connected between stepup transformer 3 and the standard potential transformer 6, another root vertically is arranged in the operation air chamber 5, its upper end is connected with horizontal conducting rod 7 middle parts, disc insulator 1 is passed in its lower end, stretch out operation air chamber 5 and be connected by test mutual inductor 2, see Fig. 2.The conducting rod 7 of the vertical setting in the present embodiment is that two parts form up and down, convenient like this manufacturing and installation, disc insulator 1 is installed in described conducting rod, and about in the of 7 two-part junction, and at the conducting rod of bottom and the junction of disc insulator spring is set, and strengthens its fastness.In the present embodiment the operation air chamber 5 on, disc insulator 1 below go back setting operation mouth flange 8, by gathering hole flange 8 conducting rod 7 is carried out break-make, be provided with radome 9 in the end of conducting rod 7, be used for discharge shroud between conductor, the radome 9 in the present embodiment is installed in the two ends of transverse conductance bar 7 and the lower end of the vertical conducting rod 7 that arranges.

The utility model is by arranging transition air chamber 4 between stepup transformer 3 and standard potential transformer 6, simultaneously at transition air chamber 4 bottom setting operation air chambers 5, and make transition air chamber 4 and operation air chamber 5 form the space of sealing, conducting rod 7 is installed in transition air chamber 4 and operation air chamber 5 inside, by conducting rod 7 with stepup transformer 3, standard potential transformer 6 connects with the tested product, and in the seal cavity that forms, be filled with SF6 gas as once the link to each other insulating medium in space of test unit, so carry out routine test, because the utility model is that full-closed structure is isolated from the outside, product N holds ground connection, the safe distance of operating personnel and test unit has not had restriction during test, traditional testing equipment is that the 500kV product is not less than 5 meters distances to operating personnel's requirement, so the design of this device has better guaranteed operating personnel's personal safety, dwindling of test space also reduced the engineering cost in test place accordingly; The utility model can also be controlled break-make once by the control to conducting rod 7 in the operation air chamber 5, so just can reach single job and just realize the withstand voltage test of product and the carrying out of error test have been improved work efficiency; Because the totally enclosed structure of the utility model can also be guaranteed not to be subjected to extraneous interference when product is carried out Partial Discharge Detection, need not to shield the support in hall, reduce project cost.

The utlity model has and in limited test site spatial dimension, to finish every test, reduced engineering cost, improved the characteristics of work efficiency.

Claims

1. electromagnetic potential transformer test unit, comprise stepup transformer, standard potential transformer, disc insulator and conducting rod, also comprise transition air chamber and operation air chamber, it is characterized in that: the transition air chamber is horizontally installed between stepup transformer and the standard potential transformer, the operation air chamber vertically is arranged on transition air chamber bottom and is communicated with the transition air chamber, transition air chamber and operation air chamber form the space of sealing, disc insulator is horizontally installed in the operation air chamber, conducting rod is two connected vertically, one be horizontally installed on the transitional gas chamber interior and be connected in stepup transformer and standard potential transformer between, another root vertically is arranged in the operation air chamber, be connected in the middle part of its upper end and the horizontal conducting rod, disc insulator is passed in its lower end, stretch out the operation air chamber and be connected by the test mutual inductor.

2. electromagnetic potential transformer test unit according to claim 1 is characterized in that: the conducting rod of described vertical setting forms for two parts up and down, and disc insulator is installed in up and down two-part junction of conducting rod.

3. electromagnetic potential transformer test unit according to claim 1 is characterized in that: on the operation air chamber, disc insulator below setting operation mouth flange.

4. each described electromagnetic potential transformer test unit in 3 according to claim 1, it is characterized in that: the end at conducting rod is provided with radome.