CN201382925Y

CN201382925Y - Failure analog device of transformer

Info

Publication number: CN201382925Y
Application number: CN200920023992U
Authority: CN
Inventors: 许平吉; 王志广
Original assignee: ZHONGHUI INSTRUMENT CO Ltd
Current assignee: ZHONGHUI INSTRUMENT CO Ltd
Priority date: 2009-03-21
Filing date: 2009-03-21
Publication date: 2010-01-13
Anticipated expiration: 2019-03-21

Abstract

The utility model provides a failure analog device of a transformer, which comprises an electrical control module, a box body containing oil sample, as well as a high temperature failure analog step-down transformer, a low temperature superheat failure analog step-down transformer and a discharging failure analog booster transformer uniformly arranged in the box body, and is characterized in that an electric heating wire, a electric heater and a plate electrode are added as well, all the primary coils of the high temperature failure analog step-down transformer, the low temperature superheat failure analog step-down transformer and the discharging failure analog booster transformer are connected with a 220V power supply through an electrical control module, the output end of the secondary coil of the high temperature failure analog step-down transformer is connected with the electric heating wire, the output end of the secondary coil of the low temperature superheat failure analog step-down transformer is connected with the electric heater, and the output end of the secondary coil of the discharging failure analog booster transformer is connected with the plate electrode. By adopting the utility model, the analogs of different failures in the transformer can be carried out conveniently and rapidly, which is convenient to measure the promptness and sensitivity of the reaction of the on-line color spectrum detecting device on the failures, and the utility model has en excellent working performance.

Description

The transformer fault analogue means

Technical field:

The invention provides a kind of transformer fault analogue means, belong to power electronics surveying instrument technical field.

Background technology

Power transformer is in operation some faults takes place unavoidably sometimes, the reason of analysis of failure generation in time seems particularly important, therefore use the on-line chromatograph pick-up unit now more and more, component concentration with institute's dissolved gas in the online detection transformer oil, thereby judge whether whether the transformer operation conditions is normal, exist the latency fault.This just needs the on-line chromatograph pick-up unit to react the working condition of transformer in service in time, exactly.How to weigh the above-mentioned performance of on-line chromatograph pick-up unit? now still there is not complete, reliable instrument to help realize such function.

Summary of the invention

The purpose of this utility model provides and a kind ofly can address the above problem, the transformer fault analogue means of different faults in the analogue transformer quickly and easily.Its technology contents is:

Comprise the electrical control module, fill the casing of oil sample and all place the interior high temperature fault simulation step-down transformer of casing, cryogenic overheating fault simulation step-down transformer and discharge fault simulation step-up transformer, it is characterized in that: set up heating wire, electric heating piece and battery lead plate, high temperature fault simulation step-down transformer wherein, the primary coil of cryogenic overheating fault simulation step-down transformer and discharge fault simulation step-up transformer connects the 220V power supply through the electrical control module, the secondary coil output terminal of high temperature fault simulation step-down transformer connects heating wire, this heating wire energising is after the electrical control module controls can produce the high temperature more than 1000 ℃, the secondary coil output terminal of cryogenic overheating fault simulation step-down transformer connects electric heating piece, this electric heating piece energising is after the electrical control module controls can produce 100～500 ℃ steady temperature, the secondary coil output terminal connection electrode plate of discharge fault simulation step-up transformer, secondary coil through electrical control module controls discharge fault simulation step-up transformer is exported several ten thousand volts high pressure, thereby the oil sample of the enough breakdown potential pole plates of this high pressure produces electrical discharge arc.

Described transformer fault analogue means, the electrical control module comprises CPU, first electronic switch, second electronic switch and the 3rd electronic switch, wherein one of ac terminal of first electronic switch, second electronic switch and the 3rd electronic switch correspondence connects primary coil one end of high temperature fault simulation step-down transformer, cryogenic overheating fault simulation step-down transformer and discharge fault simulation step-up transformer, two correspondences of ac terminal connect an end of 220V power supply, DC control is rectified the extremely corresponding control end that meets CPU, minus earth.

Its principle of work is: after different fault simulations produces different fault signature gas, carry out sample analysis by the sample tap sampling of analogue transformer and by the laboratory chromatograph, oil sample in other sample tap inserts the direct analysis mode transformer of online chromatograph just can be realized the comparison and the analysis of performance and test result accuracy to two kinds of chromatographs under same sample condition simultaneously.

The utility model compared with prior art, the characteristic gas that different faults produced in the transformer of being simulated, accuracy of measurement and reaction promptness to measurement on-line chromatograph pick-up unit provides directly, reliable means, has following advantage: compact conformation, different faults in the analogue transformer quickly and easily, be convenient to weigh promptness and the sensitivity of on-line chromatograph pick-up unit, excellent working performance to the fault state reaction.

Description of drawings

Fig. 1 is the circuit diagram of the utility model embodiment.

Among the figure: 1, high temperature fault simulation step-down transformer 2, cryogenic overheating fault simulation step-down transformer 3, discharge fault simulation step-up transformer 4, oil sample 5, casing 6, heating wire 7, electric heating piece 8, battery lead plate 9, CPU 10, first electronic switch 11, second electronic switch 12, the 3rd electronic switch

Embodiment

In the embodiment shown in fig. 1: fill and all be equipped with high temperature fault simulation step-down transformer, cryogenic overheating fault simulation step-down transformer and discharge fault simulation step-up transformer in the casing of oil sample.

High temperature fault simulation part: one of elementary connection terminal of high temperature fault simulation step-down transformer 1 connects the end of AC power 220V, two of elementary terminal connects one of ac terminal of first electronic switch 10, two of the ac terminal of first electronic switch 10 connects the other end of AC power 220V, the DC control of first electronic switch 10 is rectified the control end SW1 that the utmost point meets CPU9, minus earth, the secondary output end of high temperature fault simulation step-down transformer 1 connects heating wire 6.After energized, the conducting through CPU9 controls first electronic switch 10 reaches more than 1000 ℃ near heating wire 6 oil sample 4 temperature.

Low temperature fault simulation part: one of elementary connection terminal of cryogenic overheating fault simulation step-down transformer 2 connects the end of AC power 220V, two of elementary terminal connects one of ac terminal of second electronic switch 11, two of the ac terminal of second electronic switch 11 connects the other end of AC power 220V, the DC control of second electronic switch 11 is rectified the control end SW2 that the utmost point meets CPU9, minus earth, the secondary output end of cryogenic overheating fault simulation step-down transformer 2 connects electric heating piece 7.After energized, control the conducting of second electronic switch 11 through CPU9, near the oil sample 4 temperature electric heating piece 7 are reached 100～500 ℃ of the steady temperatures of setting.

Discharge fault simulation part: one of elementary connection terminal of discharge fault simulation step-up transformer 3 connects the end of AC power 220V, two of elementary terminal connects one of ac terminal of the 3rd electronic switch 12, two of the ac terminal of the 3rd electronic switch 12 connects the other end of AC power 220V, the DC control of the 3rd electronic switch 12 is rectified the control end SW3 that the utmost point meets CPU9, minus earth, the secondary output end of discharge fault simulation step-up transformer 3 connects a battery lead plate 8 respectively, forms discharge electric field.After energized formed high pressure, the oil sample 4 that electric field breakdown two battery lead plates that two battery lead plates are 8 are 8 formed arc discharge.

Claims

1, a kind of transformer fault analogue means, comprise the electrical control module, fill the casing (5) of oil sample (4) and all place the interior high temperature fault simulation step-down transformer (1) of casing (5), cryogenic overheating fault simulation step-down transformer (2) and discharge fault simulation step-up transformer (3), it is characterized in that: set up heating wire (6), electric heating piece (7) and battery lead plate (8), high temperature fault simulation step-down transformer (1) wherein, the primary coil of cryogenic overheating fault simulation step-down transformer (2) and discharge fault simulation step-up transformer (3) connects the 220V power supply through the electrical control module, the secondary coil output terminal of high temperature fault simulation step-down transformer (1) connects heating wire (6), the secondary coil output terminal of cryogenic overheating fault simulation step-down transformer (2) connects electric heating piece (7), the secondary coil output terminal connection electrode plate (8) of discharge fault simulation step-up transformer (3).

2, transformer fault analogue means as claimed in claim 1, it is characterized in that: the electrical control module comprises CPU (9), first electronic switch (10), second electronic switch (11) and the 3rd electronic switch (12), first electronic switch (10) wherein, one of the ac terminal of second electronic switch (11) and the 3rd electronic switch (12) correspondence connects high temperature fault simulation step-down transformer (1), primary coil one end of cryogenic overheating fault simulation step-down transformer (2) and discharge fault simulation step-up transformer (3), two correspondences of ac terminal connect an end of 220V power supply, the proper extremely correspondence of DC control connects the control end of CPU (9), minus earth.