KR20170010206A

KR20170010206A - Apparatus and Method for evaluating in insulating performance of Gas Insulated Switchgear

Info

Publication number: KR20170010206A
Application number: KR1020150101052A
Authority: KR
Inventors: 민병운; 박형연; 이정복
Original assignee: 현대중공업 주식회사
Priority date: 2015-07-16
Filing date: 2015-07-16
Publication date: 2017-01-26

Abstract

A GIS insulation performance evaluation apparatus according to an embodiment of the present invention is provided for each of a plurality of gas divisions formed in a gas insulated switchgear, and measures pressure, temperature, and pressure of gas generated in each of the plurality of gas divisions A fused composite sensor unit for simultaneously detecting waves; And an evaluation predicting unit for predicting whether or not an insulation breakdown of the gas compartment is detected by using the detection information detected by the fusion composite sensor.

Description

Technical Field [0001] The present invention relates to a GIS insulation performance evaluation apparatus and method,

The present invention relates to an apparatus and method for evaluating GIS insulation performance.

Gas Insulated Switchgear (GIS) is a device that encloses SF6 gas in a metal container and has a sufficient electric field strength. However, since a conductive foreign matter is generated during assembly, transportation, and installation, a partial discharge occurs, The weakening of the insulation strength may eventually lead to dielectric breakdown.

The GIS performs the withstand voltage test to confirm the insulation performance at the assembly plant before actual operation. In addition, pressurization test is performed after total assembly at the installation site. However, insulation breakdown occurs due to a decrease in insulation performance due to assembly / transportation / installation errors.

If insulation breakdown occurs, the correct cause and location should be detected and the repair performed. However, due to the problem that the GIS is sealed with SF6 gas and it is difficult to understand the insulation breakdown inside, the insulation performance of the product may be further deteriorated due to the delay of the maintenance work and repeated withstanding voltage test.

Arcs arising from dielectric breakdown inside GIS are detected in various ways. The arc generated inside the GIS generates light in a dark shielded space.

However, in order to accommodate the optical sensor, the optical receiver must be mounted in the gas compartment of the gas-insulated switchgear, so that there is a problem that the GIS enclosed area must be mechanically changed.

In addition, the magnetic field sensor that measures the electric phenomenon accompanied by the arc generation is difficult to apply to the GIS using the multi-grounding, and the electric arc detection has to have the high-performance resolution of about nanosecond, Lt; / RTI >

Korean Patent Laid-Open Publication No. 10-2008-0108845 (entitled SWNT-UHF Fusion Sensor and Method for Detecting Partial Discharge in Gas Insulated Switchgear Using the Same)

Disclosure of Invention Technical Problem [8] The present invention provides a GIS insulation performance evaluation apparatus and method capable of quickly detecting an insulation accident occurring in a gas insulated switch-gear (GIS) and accurately detecting a detected position The purpose is to provide.

In one embodiment, when the pressure wave detected by the fusion composite sensor unit exceeds a preset reference pressure wave, the evaluation predicting unit may determine that the gas partition is broken due to the first judgment signal, A determination unit; A second determination unit that is operated based on the first determination signal and provides a second determination signal that determines that the gas compartment is destroyed when the pressure detected by the fusion composite sensor unit exceeds a reference pressure; A third determination unit which is operated based on the second determination signal and provides a third determination signal that determines that the gas compartment is destroyed when the temperature detected by the fusion composite sensor unit exceeds a reference temperature; And a display unit for displaying the position of the gas barrier insulated by the operator based on the third determination signal.

The method of evaluating the GIS insulation performance according to an embodiment of the present invention is a method for evaluating the insulation performance of a GIS by measuring a pressure of a gas generated in each of the plurality of gas sections due to an withstand voltage test through a fused composite sensor section provided for each of a plurality of gas sections A gas information detecting step of detecting simultaneously a temperature and a pressure wave; And an evaluation and prediction step of predicting whether or not an insulation breakdown of the gas section is to be detected using the detection information detected in the detecting step.

In one embodiment, when the pressure wave detected by the fusion composite sensor unit exceeds a preset reference pressure wave, the first estimation unit predicts that the first gas determination unit determines that the gas compartment is destroyed by insulation A first determination step of providing a signal; And a second determination unit operable based on the first determination signal to provide a second determination signal that determines that the gas partition is insulated when the pressure detected by the fusion compound sensor unit exceeds a reference pressure, 2 judgment step; And a third determination unit operable based on the second determination signal to provide a third determination signal that determines that the gas compartment is destroyed when the temperature detected by the fusion compound sensor unit exceeds a reference temperature, 3 judgment step; And an insulation breakdown position display step of displaying on the display unit the position of the gas barrier insulated by the operator based on the third judgment signal.

The GIS insulation performance evaluation apparatus according to an embodiment of the present invention can monitor the gas pressure, the gas temperature, and the gas pressure wave in real time for each gas compartment of the gas insulated switchgear so that the insulation breakdown Thereby providing an advantage of being able to easily estimate the position.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an apparatus view showing a GIS insulation performance evaluation apparatus according to an embodiment of the present invention; FIG.
2 is a state diagram showing a state in which the Fusion composite sensor unit is located in the gas insulation switch (GIS) by the gas compartment.
3 is a flowchart illustrating a method for evaluating GIS insulation performance according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order that those skilled in the art can easily carry out the present invention. In the following detailed description of the preferred embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In the drawings, like reference numerals are used throughout the drawings.

In addition, in the entire specification, when a part is referred to as being 'connected' to another part, it may be referred to as 'indirectly connected' not only with 'directly connected' . Also, to "include" an element means that it may include other elements, rather than excluding other elements, unless specifically stated otherwise.

Hereinafter, an apparatus and method for evaluating GIS insulation performance according to an embodiment of the present invention will be described in detail with reference to the drawings.

1 is a device diagram showing a GIS insulation performance evaluation apparatus.

2 is a state diagram showing a state in which the Fusion composite sensor unit is located in the gas insulation switch (GIS) by the gas compartment.

As shown in FIG. 1, an apparatus 100 for evaluating GIS insulation performance according to an embodiment of the present invention includes a fusion composite sensor unit 110 and an evaluation prediction unit 120.

2, the fused composite sensor unit 110 is disposed for each of a plurality of gas compartments (first to eighth zones) formed in a gas insulated switch-gear (hereinafter referred to as GIS) Temperature, and pressure waves generated in each of the plurality of gas divisions due to the experiment.

The evaluation predicting unit 120 performs a function of predicting the insulation breakdown of the gas compartment using the detection information detected by the fusion composite sensor unit 110.

More specifically, the evaluation predicting unit 120 may include a first determining unit 121, a second determining unit 122, a third determining unit 123, and a display unit 124.

When the pressure wave detected by the fusion composite sensor unit 110 exceeds a preset reference pressure wave, the first determination unit 121 provides a first determination signal that the gas partition is determined to be destroyed by insulation do.

The second determination unit 122 is operated based on the first determination signal, and when the pressure detected by the fusion composite sensor unit 110 exceeds the reference pressure, the second determination unit 122 determines that the gas partition is insulated 2 judgment signal.

The third determination unit 123 operates based on the second determination signal and determines that the gas compartment is destroyed when the temperature detected by the fusion compound sensor unit 110 exceeds the reference temperature And provides a third judgment signal.

The display unit 124 displays the position of the gas barrier insulated by the operator based on the third judgment signal.

3 is a flowchart illustrating a method for evaluating GIS insulation performance according to an embodiment of the present invention.

As shown in FIG. 3, the GIS insulation performance evaluation method (S100) according to an embodiment of the present invention may include a gas information detection step (S110) and an evaluation prediction step (S120).

The gas information detection step (S110) may include detecting a gas pressure, a temperature, and a pressure of gas generated in each of the plurality of gas compartments due to the withstand voltage test through the fusion compound sensor unit disposed for each of the plurality of gas compartments formed in the gas insulated switchgear May be simultaneously detected.

The evaluation and prediction step (S120) may be a step of predicting whether or not the gas partition is broken by using the detection information (pressure, temperature, pressure wave of gas) detected in the gas information detection step (S110).

More specifically, the estimation and estimation step S120 may include a first determination step S121, a second determination step S122, a third determination step S123, and a display step S124.

In the first determination step S121, when the pressure wave detected by the fusion composite sensor unit 110 exceeds a predetermined reference pressure wave, the first determination unit determines that the gas partition is insulated 1 < / RTI > judgment signal.

In the second determination step S122, when the pressure detected by the fusion composite sensor unit 110 in the second determination unit operated based on the first determination signal exceeds the reference pressure, The second determination signal may be a signal indicating that the second determination signal is not received.

In the third determination step (S123), when the temperature detected by the fusion composite sensor unit in the third determination unit operated based on the second determination signal exceeds the reference temperature, it is determined that the gas compartment is destroyed by insulation The third determination signal indicating that the first determination signal is generated.

The step of displaying the dielectric breakdown position (S124) may be a step of displaying the position of the gas barrier insulated by the operator on the display unit based on the third judgment signal.

In the meantime, a component or 'unit' or block used in an embodiment of the present invention may be implemented in software (such as a task, a class, a subroutine, a process, an object, an execution thread, software, hardware such as a field programmable gate array (FPGA) or an application-specific integrated circuit (ASIC), or a combination of the above software and hardware. The components or parts may be included in a computer-readable storage medium, or a part of the components may be distributed to a plurality of computers

According to the apparatus and method for evaluating GIS insulation performance according to an embodiment of the present invention, it is possible to measure the gas pressure, the gas temperature, the gas temperature, and the gas pressure of the gas-insulated gas compartment by using the fusion compound sensor unit provided for each gas compartment of the gas insulated switchgear There is an advantage that the pressure wave can be sensed and the position of the insulated broken gas compartment of the gas insulated switchgear can be easily found through the sensed information.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the present invention is not limited to the disclosed exemplary embodiments, but various changes and modifications may be made without departing from the scope of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but are intended to illustrate and not limit the scope of the technical spirit of the present invention. The scope of protection of the present invention should be construed according to the claims, and all technical ideas which are within the scope of the same should be interpreted as being included in the scope of the present invention.

Device number
100: GIS insulation performance evaluation device 110; Fusion composite sensor unit
120: evaluation prediction unit 121:
122: second judgment unit 123: third judgment unit
124:
Method number
S100: GIS insulation performance evaluation method S110: Gas information detection step
S120: evaluation prediction step S121: first judgment step
S122: second judgment step S123: third judgment step
S124: Insulation breakdown position display step

Claims

A fused composite sensor unit disposed for each of the plurality of gas compartments formed in the gas insulated switchgear and simultaneously detecting pressure, temperature, and pressure waves of gas generated in each of the plurality of gas compartments due to the withstand voltage test; And
And an evaluation predicting unit for predicting whether or not an insulation breakdown of the gas section is detected using the detection information detected by the fusion composite sensor.

The method according to claim 1,
The evaluation predicting unit predicts,
A first judging unit for providing a first judging signal that the gas compartment is judged to be insulated when the pressure wave detected by the fusion compound sensor unit exceeds a reference pressure wave preset therein;
A second determination unit that is operated based on the first determination signal and provides a second determination signal that determines that the gas compartment is destroyed when the pressure detected by the fusion composite sensor unit exceeds a reference pressure;
A third determination unit which is operated based on the second determination signal and provides a third determination signal that determines that the gas compartment is destroyed when the temperature detected by the fusion composite sensor unit exceeds a reference temperature; And
And displays the position of the gas barrier insulated by the operator on the basis of the third judgment signal.

A gas information detecting step of simultaneously detecting pressure, temperature, and pressure waves of gases generated in each of the plurality of gas compartments due to the withstand voltage test through the fused composite sensor unit disposed for each of the plurality of gas compartments formed in the gas insulated switchgear; And
And an evaluation and prediction step of predicting whether or not an insulation breakdown of the gas section is to be detected using the detection information detected in the gas information detection step

The method of claim 3,
Wherein, in the evaluation prediction step,
A first determination step of providing a first determination signal that the first determination unit determines that the gas compartment is destroyed by insulation when the pressure wave detected by the fusion composite sensor unit exceeds a preset reference pressure wave;
And a second determination unit operable based on the first determination signal to provide a second determination signal that determines that the gas partition is insulated when the pressure detected by the fusion compound sensor unit exceeds a reference pressure, 2 judgment step;
And a third determination unit operable based on the second determination signal to provide a third determination signal that determines that the gas compartment is destroyed when the temperature detected by the fusion compound sensor unit exceeds a reference temperature, 3 judgment step; And
And an insulation breakdown position display step of displaying on the display unit the position of the gas barrier insulated by the operator based on the third judgment signal.