CN202041592U - Special vehicle-mounted test system for measuring key parameters of large-sized transformer - Google Patents

Special vehicle-mounted test system for measuring key parameters of large-sized transformer Download PDF

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Publication number
CN202041592U
CN202041592U CN2011200116673U CN201120011667U CN202041592U CN 202041592 U CN202041592 U CN 202041592U CN 2011200116673 U CN2011200116673 U CN 2011200116673U CN 201120011667 U CN201120011667 U CN 201120011667U CN 202041592 U CN202041592 U CN 202041592U
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China
Prior art keywords
transformer
test
container
special
special vehicle
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Expired - Fee Related
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CN2011200116673U
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Chinese (zh)
Inventor
伍志荣
陈江波
张曦
郭慧浩
蔡胜伟
尹晶
聂德鑫
邬雄
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State Grid Electric Power Research Institute
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State Grid Electric Power Research Institute
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Anticipated expiration legal-status Critical
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Abstract

The utility model provides a special vehicle-mounted test system for measuring key parameters of a large-sized transformer, which comprises a current transformer, a voltage transformer, a power analyzer, a partial discharge tester, a direct current resistance tester and a sound level meter and is characterized by also comprising a special vehicle-mounted container, wherein the current transformer and the voltage transformer are fixed in the special vehicle-mounted container, and the distance between the current transformer and the voltage transformer meets the requirement of an electrical safety distance; and a whole set of test facilities comprising the power analyzer, the partial discharge tester, the direct current resistance tester and the sound level meter is arranged in the special vehicle-mounted container to form a removable vehicle-mounted container-type test system. The special vehicle-mounted test system is beneficial to transportation, so that the facilities can be safely and reliably transported to a test site; and after the facilities are transported to the site, the key parameters of 110kV-750kV large-sized power transformers with multiple varieties and specifications can be accurately measured on site as long as the facilities are wired for one time, and test items are comprehensive.

Description

The special-purpose onboard measure system of a kind of high-power transformer crucial parameter measurement
Technical field
The utility model relates to the special-purpose onboard measure system of a kind of high-power transformer crucial parameter measurement, particularly for the on-the-spot accurately test of 110kV~750kV serial large-scale power transformer key parameter, belongs to electrical equipment technical field.
Background technology
It is energy-conservation that the quality of transformer energy consumption, sound level and insulating property not only is related to electrical network self, also relates to the cost of transformer simultaneously.Concentrate in the process of bid at State Grid Corporation of China's equipment, the transformer key index has become the focus of competitive bidding.On the transformer key index, the situation that actual supply of material product key index and bidding contract value grave fault occurred, trace it to its cause and generally be: the test capability deficiency, test detecting equipment expires and does not examine, and the not high crucial parameter measurement deviation that causes of peopleware is big.
China's utility model patent (application number: 200620025099.1, title: a kind of transformer capacity and loss high speed tester) relates to the test problem of transformer parameter, its technical scheme is to test transformer capacity and loss fast, but does not mention on-the-spot shelf depreciation and the sound level field test under 110kV~750kV serial large-scale power transformer open circuit loss, load loss, the induced voltage that detect.China's utility model patent (application number: 92240844, title: a kind of transformer capacity and loss high speed tester) patent of invention (application number: 200710195096.1, title: the transformer performance comprehensive test device) relate generally to the integration test of medium-small type distribution transformers, do not relate to the comprehensive detection system of large-scale many specifications power transformer.
The present domestic ability that many descriptions large-scale power transformer no-load current and open circuit loss, short-circuit impedance and load loss test are carried out in the scene that do not possess.
Summary of the invention
The purpose of this utility model provides the special-purpose onboard measure system of a kind of high-power transformer crucial parameter measurement, a complete set of testing apparatus is loaded in the packaged type vehicle-mounted container, equipment is safety, reliable in transportation, after arriving test site, this container constitutes a test platform, and only need carry out the primary equipment wiring can carry out the various parameter measurements of transformer easily.
The technical solution of the utility model is: the special-purpose onboard measure system of a kind of high-power transformer crucial parameter measurement, comprise current transformer, voltage transformer (VT), power analyzer, instrument for measuring partial discharge, instrument for measuring DC resistance and sound meter, it is characterized in that: system also comprises a special-purpose vehicle-mounted container, current transformer and voltage transformer (VT) are fixed in this special use vehicle-mounted container, and the distance of current transformer and voltage transformer (VT) meets the requirement of electrical safety distance, power analyzer, instrument for measuring partial discharge, the a complete set of testing apparatus of instrument for measuring DC resistance and sound meter is positioned in this special use vehicle-mounted container, constitutes vehicle-mounted removable container-type test macro.The technique effect that brings thus is at least: the favourable transportation of this special use onboard measure system makes equipment can be transported to test site safely, reliably; After reaching the spot, only need carry out the primary equipment wiring and can accurately detect by on-the-spot 110kV~750kV large-scale power transformer key parameter many descriptions, test item is comprehensive.
The beneficial effects of the utility model are: the special-purpose onboard measure system of the utility model high-power transformer crucial parameter measurement has very high use value, carrying out large-scale power transformer open circuit loss and no-load current, load loss and short-circuit impedance, under the induced voltage in shelf depreciation and the sound level field test, this system can accurately on-the-spotly detect the transformer key parameter, and can obtain net result by independently developed calculation procedure at short notice, obtain the transformer correlation parameter information that the tester is concerned about, has the precision height, test specification is wide, characteristics such as mobility is good, and whole system has good Electro Magnetic Compatibility under the abominable electromagnetic environment in testing ground.
Description of drawings
Fig. 1 is that the special-purpose onboard measure system of a kind of high-power transformer crucial parameter measurement that the utility model provides carries out open circuit loss and no-load current testing principle block diagram.
Fig. 2 is that the special-purpose onboard measure system of a kind of high-power transformer crucial parameter measurement that the utility model provides carries out load loss and short-circuit impedance testing principle block diagram.
Fig. 3 is that the special-purpose onboard measure system of a kind of high-power transformer crucial parameter measurement that the utility model provides carries out shelf depreciation testing principle block diagram under the induced voltage.
Fig. 4 is that the special-purpose onboard measure system of a kind of high-power transformer crucial parameter measurement that the utility model provides carries out sound level mensuration testing principle block diagram.
Embodiment
Symbol description in the accompanying drawing 1: CT is a current transformer, and PT is a voltage transformer (VT).
Followingly the utility model embodiment is elaborated with reference to accompanying drawing.
The utility model embodiment provides a kind of high-power transformer crucial parameter measurement special-purpose onboard measure system, is used for the measurement to shelf depreciation and sound level field test under 110kV~750kV large-scale power transformer open circuit loss, load loss, the induced voltage.
The special-purpose onboard measure system of this high-power transformer crucial parameter measurement is made up of a special-purpose vehicle-mounted container, current transformer, voltage transformer (VT), power analyzer, instrument for measuring partial discharge, sound meter, Transformer Winding instrument for measuring DC resistance.
A complete set of testing apparatus constitutes vehicle-mounted removable container-type test macro, and current transformer and voltage transformer (VT) are fixed in this special use vehicle-mounted container, and the distance of current transformer and voltage transformer (VT) meets the requirement of electrical safety distance.The a complete set of testing apparatus of power analyzer, instrument for measuring partial discharge, instrument for measuring DC resistance and sound meter is positioned in this special use vehicle-mounted container, constitutes vehicle-mounted removable container-type test macro.The technique effect that brings thus is at least: the favourable transportation of this special use onboard measure system makes equipment can be transported to test site safely, reliably; After reaching the spot, only need carry out the primary equipment wiring and can accurately detect by on-the-spot 110kV~750kV large-scale power transformer key parameter many descriptions, test item is comprehensive.
As shown in Figures 1 and 2, when carrying out the test of open circuit loss, no-load current, load loss and short-circuit impedance, putting on the voltage of power transformer and electric current is converted to power analyzer by voltage transformer (VT), current transformer respectively and allows standard signal in the input range, in the present embodiment, electric current, voltage transformer secondary output are connected with power analyzer, be applied to voltage and current on the transformer in order to measurement, current transformer and voltage transformer (VT) adopt many gears mutual inductor; Power measurement adopts the high-precision power analyser, WT3000 power analyzer for example, and it comprises signal acquisition circuit and power computation module; The tested object of native system is 110kV~750kV large-scale power transformer, the scope of trial voltage and electric current is bigger, therefore the current transformer rated primary current be divided into 5,10,25,50,100,250,500,1000,1500, the 2000A shelves, voltage transformer (VT) is divided into 66kV, 35kV shelves, satisfies each electric pressure large-scale power transformer trial voltage of 110kV~750kV and current measuring range and accuracy requirement; When trial voltage and the requirement of electric current arrival related specifications, the power analyzer that is connected in voltage transformer (VT), Current Transformer Secondary side records parameters such as one group of electric current, voltage, power, in the special calculation procedure of working out of parameter input that obtains, the result after finally being converted.
As shown in Figure 3, when carrying out under the induced voltage partial discharge of transformer test, the voltage that puts on power transformer is converted to power analyzer by voltage transformer (VT) and allows standard signal in the input range, when trial voltage reaches the related specifications requirement, the impedance that is connected in the partial discharge of transformer monitoring point will receive discharge pulse signal and be sent to instrument for measuring partial discharge, and the discharge pulse waveform is observed by instrument for measuring partial discharge.
As shown in Figure 4, when carrying out the sound level determination test, when being applied in rated voltage, transformer carries out, the voltage that puts on power transformer is converted to power analyzer by voltage transformer (VT) and allows standard signal in the input range, when trial voltage arrives the transformer rated voltage, use SONOAN that the transformer sound level is detected, in the special calculation procedure of working out of parameter input that obtains, the result after finally being converted.
Current transformer that the utility model is selected and voltage transformer (VT) are the high precision mutual inductor, and precision is 0.01 grade, and the mutual inductor secondary side is connected with power analyzer and voltage and current signal after the conversion be provided; Because power factor was minimum when transformer was carried out open circuit loss, load loss test, therefore, a whole set of measuring system still need keep degree of precision under low power factor, for the accuracy of warranty test test, the power analyzer of selecting the low power factor mutual inductor when the present invention designs for use and matching with it.
In addition, mutual inductor can move flexibly and anti-seismic performance good, under requiring, satisfied long-distance transport and on-the-spot test carry out shelf depreciation and sound level field test under 110kV~750kV large-scale power transformer open circuit loss and no-load current, load loss and short-circuit impedance, the induced voltage, each test is not quite similar to the requirement of the equipment and the mode of connection, but the secondary measuring equipment can accomplish to exempt from wiring.
The beneficial effects of the utility model are: the special-purpose onboard measure system of the utility model high-power transformer crucial parameter measurement has very high use value, under carrying out large-scale power transformer open circuit loss and no-load current, load loss and short-circuit impedance, induced voltage in shelf depreciation and the sound level field test, this system can precise real-time detection transformer key parameter, and can obtain net result by independently developed calculation procedure at short notice, obtain the transformer correlation parameter information that the tester is concerned about.Have characteristics such as precision height, test specification is wide, mobility is good, and whole system has good Electro Magnetic Compatibility under the abominable electromagnetic environment in testing ground.

Claims (1)

1. the special-purpose onboard measure system of a high-power transformer crucial parameter measurement, comprise current transformer, voltage transformer (VT), power analyzer, instrument for measuring partial discharge, instrument for measuring DC resistance and sound meter, it is characterized in that: system also comprises a special-purpose vehicle-mounted container, current transformer and voltage transformer (VT) are fixed in this special use vehicle-mounted container, and the distance of current transformer and voltage transformer (VT) meets the requirement of electrical safety distance, power analyzer, instrument for measuring partial discharge, the a complete set of testing apparatus of instrument for measuring DC resistance and sound meter is positioned in this special use vehicle-mounted container, constitutes vehicle-mounted removable container-type test macro.
CN2011200116673U 2011-01-17 2011-01-17 Special vehicle-mounted test system for measuring key parameters of large-sized transformer Expired - Fee Related CN202041592U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102759662A (en) * 2012-07-09 2012-10-31 中国长江三峡集团公司 Method for measuring DC (Direct Current) resistances of transformer windings
CN102879739A (en) * 2012-09-26 2013-01-16 内蒙古自治区农牧业机械试验鉴定站 Device for testing power characteristic of wind driven generator set
CN103196491A (en) * 2013-03-22 2013-07-10 广州供电局有限公司 Transformer integral comprehensive detection device
CN104407260A (en) * 2014-12-16 2015-03-11 国网电力科学研究院武汉南瑞有限责任公司 Latent fault pre-warning method and device for distribution transformer
CN106767375A (en) * 2016-11-29 2017-05-31 武汉振源电气股份有限公司 Three-phase transformer winding deformation on-line monitoring method based on short circuit impedance method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102759662A (en) * 2012-07-09 2012-10-31 中国长江三峡集团公司 Method for measuring DC (Direct Current) resistances of transformer windings
CN102879739A (en) * 2012-09-26 2013-01-16 内蒙古自治区农牧业机械试验鉴定站 Device for testing power characteristic of wind driven generator set
CN103196491A (en) * 2013-03-22 2013-07-10 广州供电局有限公司 Transformer integral comprehensive detection device
CN103196491B (en) * 2013-03-22 2015-09-23 广州供电局有限公司 Transformer integral comprehensive detection device
CN104407260A (en) * 2014-12-16 2015-03-11 国网电力科学研究院武汉南瑞有限责任公司 Latent fault pre-warning method and device for distribution transformer
CN106767375A (en) * 2016-11-29 2017-05-31 武汉振源电气股份有限公司 Three-phase transformer winding deformation on-line monitoring method based on short circuit impedance method
CN106767375B (en) * 2016-11-29 2019-04-26 武汉振源电气股份有限公司 Three-phase transformer winding deformation on-line monitoring method based on short circuit impedance method

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CF01 Termination of patent right due to non-payment of annual fee