CN212540738U - GIS internal foreign matter diagnosis device - Google Patents
GIS internal foreign matter diagnosis device Download PDFInfo
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- CN212540738U CN212540738U CN202021785461.1U CN202021785461U CN212540738U CN 212540738 U CN212540738 U CN 212540738U CN 202021785461 U CN202021785461 U CN 202021785461U CN 212540738 U CN212540738 U CN 212540738U
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Abstract
A diagnostic device for foreign matter in GIS comprises impulse voltage generator, high voltage controller, main controller, and detection device, wherein the main controller controls the breaker to make closing action through the breaking controller of GIS, and the closing action of the breaker is used to cause mechanical vibration of the housing of GIS, so as to drive the foreign body in the GIS shell to bounce or jump, at the moment, in the process of the movement of the foreign body, the main controller controls the impulse voltage generator to apply instantaneous high voltage to the shell of the GIS through the high voltage controller, so that high-voltage field intensity is formed between the conductive part inside the GIS shell and the side wall of the GIS shell, the jump of foreign matters forms short circuit between the conductive part inside the GIS shell and the ground to form breakdown voltage, the detection device collects the instantaneous current value and the instantaneous voltage value of the conductive part inside the GIS, and judging whether foreign matters exist in the shell of the GIS or not according to the magnitude of the instantaneous current value and the instantaneous voltage value.
Description
Technical Field
The utility model relates to an experimental technical field of electrical equipment especially relates to an inside foreign matter diagnostic device of GIS.
Background
Gas-insulated fully-enclosed switchgear (GIS) is one of the most important devices in the current power system, and the operational reliability of the Gas-insulated fully-enclosed switchgear is directly related to the safety and stability of the power grid system. GIS are usually manufactured and tested in a factory and then transported to the installation site in the form of a transport unit. The problems that may occur in the transportation, storage and installation of the equipment are that parts are loosened and fall off, the surface of the electrode is scratched or misplaced to cause the surface defect of the electrode, conductive particles enter or tools are forgotten in the device, and the like. Among all kinds of defects, it is a common defect that there are residues in GIS equipment, because field assembly, the internal residues may be the very small objects of size such as free metal particles, also may be the great objects such as bolt, spanner, if this kind of residues can not in time be discover, then can cause the trouble in equipment operation process.
At present, the tiny remnants such as free metal particles and the like are mostly detected by adopting electric methods such as field voltage resistance, partial discharge detection and the like, and particularly, the characteristics that the free metal particles can generate ultrasonic signals when jumping under the action of an electric field are utilized, and an ultrasonic sensor is utilized to detect the tiny remnants. However, field operation experience shows that the jumping of the foreign matter inside the GIS is mainly caused by the action of electrostatic force, when the foreign matter inside the GIS cannot jump under the operation voltage, the foreign matter cannot be effectively found by conventional ultrasonic release, and a withstand voltage test is insensitive to the conventional ultrasonic release, so that the foreign matter is difficult to find.
Disclosure of Invention
There is a need for a GIS internal foreign object diagnostic apparatus.
A GIS internal foreign matter diagnosis device comprises an impulse voltage generator, a high-voltage controller, a main controller and a detection device, wherein the main controller is electrically connected with the high-voltage controller and the detection device;
the main controller is electrically connected with a to-be-tested GIS circuit breaker controller, and the main controller transmits a first control signal to the GIS circuit breaker controller so that the GIS circuit breaker controller controls a GIS circuit breaker to perform closing action and a GIS shell generates mechanical vibration; after the main controller transmits the first control signal, the main controller transmits a second control signal to the high-voltage controller after a preset time period; the high-voltage controller controls the impulse voltage generator to work according to the second control signal; the impulse voltage generator responds to the control of the high-voltage controller, and applies instantaneous high voltage on the mechanically vibrated GIS shell so as to form high-voltage field intensity between the conductive parts inside the GIS shell and the side wall of the GIS shell; the detection device collects the instantaneous current value and the instantaneous voltage value of the conductive part in the GIS electrically connected with the detection device under the control of the main controller, and provides the collected instantaneous current value and the collected instantaneous voltage value for detection personnel, so that the detection personnel can judge whether foreign matters exist in the shell of the GIS according to the instantaneous current value and the instantaneous voltage value.
Preferably, the device for diagnosing foreign matters in the GIS further comprises a display device, the display device is electrically connected with the detection device, the detection device transmits the collected instantaneous current value and the collected instantaneous voltage value to the display device, and the display device displays the instantaneous current value and the instantaneous voltage value transmitted by the detection device for the detection personnel to watch.
Preferably, the main controller comprises a starting signal generating module, a control signal generating module and a delay module, wherein the signal source is connected with the control signal generating module in series, the delay module is connected with the high-voltage controller in series, and the delay module is also used for being connected with the circuit breaking controller in parallel; the starting signal generating module responds to the starting operation of an operator and outputs a starting signal to the control signal generating module; the control signal generating module responds to the starting signal to output a first control signal to the open circuit controller and the delay module of the GIS, and after the delay module delays for a preset time period, the received first control signal is used as a second control signal to be provided to the high-voltage controller.
The utility model provides an among the inside foreign matter diagnostic device of GIS, utilize the mechanical oscillation of circuit breaker combined floodgate action to arouse the casing of GIS, bounce or beat with the foreign matter that drives the bottommost of the casing that is located GIS, at the in-process of foreign matter motion this moment, utilize impulse voltage generator to exert high pressure in the twinkling of an eye to GIS's casing, make and form high-voltage field intensity between the inside conductive parts of casing of GIS and the casing lateral wall, the bounce of foreign matter has formed the short circuit between conductive parts in the casing and the ground, form breakdown voltage, gather conductive parts's in the GIS's current value in the twinkling of an eye and voltage value this moment, whether there is the foreign matter in the casing of accurate judgement GIS according to the magnitude of the current value in.
Drawings
Fig. 1 is a schematic diagram of functional modules of the internal foreign matter diagnosis device of the GIS of the present invention.
Fig. 2 is a functional block diagram of the main controller in fig. 1.
In the figure: the device comprises a GIS internal foreign matter diagnosis device 10, an impulse voltage generator 20, a high-voltage controller 30, a main controller 40, a starting signal generation module 41, a control signal generation module 42, a time delay module 43, a detection device 50, a GIS 60, a conductive part 61, a breaking controller 62, a breaker 63, a shell 64, a display device 70, a transition sleeve 80 and a foreign matter 90.
Detailed Description
The utility model provides a technical scheme combines together mechanical force and electric power, utilizes the mechanical force that easily arouses in the casing foreign matter of GIS to bounce or beat, makes the foreign matter position change earlier, and the foreign matter of recycling motion arouses the breakdown of the inside electric field of GIS cavity, judges that GIS is inside whether to have the foreign matter. The technical scheme of the invention is described in detail as follows:
referring to fig. 1 to 2, the GIS internal foreign matter diagnosis device 10 includes an impulse voltage generator 20, a high voltage controller 30, a main controller 40, and a detection device 50, where the main controller 40 is electrically connected to the high voltage controller 30 and the detection device 50, the high voltage controller 30 is electrically connected to the impulse voltage generator 20, and the impulse voltage generator 20 and the detection device 50 are further configured to be electrically connected to an electrically conductive component 61 of a GIS 60.
The main controller 40 is also used for electrically connecting with the GIS's circuit breaking controller 62, which is the main controllerThe controller 40 transmits a first control signal to the GIS circuit breaker controller 62, so that the GIS circuit breaker controller 62 controls the GIS circuit breaker 63 to make a closing action, and a GIS shell 64 generates mechanical vibration, and the main controller 40 is further used for transmitting a second control signal to the high-voltage controller 30 after a preset time period after transmitting the first control signal; the high voltage controller 30 controls the surge voltage generator 20 to operate according to the second control signal; the surge voltage generator 20 applies an instantaneous high voltage to the mechanically vibrated housing 64 of the GIS in response to the control of the high voltage controller 30, so that a high voltage field intensity is formed between the conductive member 61 inside the housing 64 of the GIS and the side wall of the housing 64; the detection device 50 is used for collecting the instantaneous current value and the instantaneous voltage value of the conductive part 61 in the GIS electrically connected with the main controller 40 under the control of the main controller 40, and providing the collected instantaneous current value and the collected instantaneous voltage value to a detection person, so that the detection person can judge whether the foreign matter 90 exists in the housing 64 of the GIS according to the instantaneous current value and the instantaneous voltage value. Wherein, the contact closing action of the breaker is a mechanical action, and the sensitivity of the mechanical action is in the millisecond level, namely 10-3Of the order of magnitude, and the sensitivity of the surge voltage is of the order of microseconds, i.e. 10-6The magnitude order, so the foreign matter is in the state of taking off, and the application of instantaneous impulse voltage can make the foreign matter because of the position change, and the position change of foreign matter forms the distortion of electric field in the casing, when reaching the breakdown threshold value, forms the discharge channel.
Further, the device 10 for diagnosing foreign matters inside the GIS further includes a display device 70, the display device 70 is electrically connected to the detection device 50, the detection device 50 transmits the collected instantaneous current value and the instantaneous voltage value to the display device 70, the display device 70 displays the instantaneous current value and the instantaneous voltage value transmitted by the detection device 50 for the detection personnel to watch, and the detection personnel can judge whether foreign matters exist inside the housing 64 of the GIS according to the standard reference value and the displayed instantaneous current value and instantaneous voltage value, wherein the standard reference value is the reference current value and the reference voltage value, the standard reference value can be displayed on the display device 70 in advance, or can be transmitted to the display device 70 by the detection device 50 for displaying; the transition bushing 80 is sleeved on the line between the surge voltage generator 20 and the housing 64 of the GIS to protect the line. In other embodiments, the detection device compares the collected instantaneous current value and instantaneous voltage value with a prestored reference current value and reference voltage value, and generates foreign matter alarm information when the instantaneous current value is greater than the reference current value and the instantaneous voltage value is less than the reference voltage value, for example, the alarm information is an alarm sound signal, and sends out an alarm sound according to the alarm sound signal to prompt that foreign matter exists in a shell of the GIS, or the alarm information is character information, and the alarm information is provided for the display device to display.
Further, the main controller 40 includes a start signal generating module 41, a control signal generating module 42, and a delay module 43, where the start signal generating module 41 is connected in series with the control signal generating module 42, the delay module 43 is connected in series with the high voltage controller 30, and the delay module 43 is further configured to be connected in parallel with the shutdown controller 62; the starting signal generating module 41 responds to the starting operation of the operator and outputs a starting signal to the control signal generating module 42; the control signal generating module 42 responds to the start signal to output a first control signal to the shutdown controller 62 and the delay module 43 of the GIS, and after the delay module 43 delays for a preset time period, the received first control signal is provided to the high voltage controller 30 as a second control signal. The length of the preset time period is determined according to the sensitivity of the mechanical action. The start signal generating module 41 may be a button, the control signal generating module 42 may be a switch, and the delay module 43 may be a PLC or a switch capable of implementing a delay function.
The utility model provides an among the inside foreign matter diagnostic device of GIS, utilize the mechanical oscillation of circuit breaker combined floodgate action to arouse the casing of GIS, bounce or beat with the foreign matter that drives the bottommost of the casing that is located GIS, at the in-process of foreign matter motion this moment, utilize impulse voltage generator to exert high pressure in the twinkling of an eye to GIS's casing, make and form high-voltage field intensity between the inside conductive parts of casing of GIS and the casing lateral wall, the bounce of foreign matter has formed the short circuit between conductive parts in the casing and the ground, form breakdown voltage, gather conductive parts's in the GIS's current value in the twinkling of an eye and voltage value this moment, whether there is the foreign matter in the casing of accurate judgement GIS according to the magnitude of the current value in.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may include only a single embodiment, and such description is for clarity only, and those skilled in the art will recognize that the present description is incorporated herein as a whole, and that the various embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (3)
1. A GIS internal foreign matter diagnosis device is characterized by comprising an impulse voltage generator, a high-voltage controller, a main controller and a detection device, wherein the main controller is electrically connected with the high-voltage controller and the detection device;
the main controller is electrically connected with a to-be-tested GIS circuit breaker controller, and the main controller transmits a first control signal to the GIS circuit breaker controller so that the GIS circuit breaker controller controls a GIS circuit breaker to perform closing action and a GIS shell generates mechanical vibration; after the main controller transmits the first control signal, the main controller transmits a second control signal to the high-voltage controller after a preset time period; the high-voltage controller controls the impulse voltage generator to work according to the second control signal; the impulse voltage generator responds to the control of the high-voltage controller, and applies instantaneous high voltage on the mechanically vibrated GIS shell so as to form high-voltage field intensity between the conductive parts inside the GIS shell and the side wall of the GIS shell; the detection device collects the instantaneous current value and the instantaneous voltage value of the conductive part in the GIS electrically connected with the detection device under the control of the main controller, and provides the collected instantaneous current value and the collected instantaneous voltage value for detection personnel, so that the detection personnel can judge whether foreign matters exist in the shell of the GIS according to the instantaneous current value and the instantaneous voltage value.
2. The GIS internal foreign matter diagnosis device according to claim 1, wherein: the GIS internal foreign matter diagnosis device further comprises a display device, the display device is electrically connected with the detection device, the detection device transmits the collected instant current value and the collected instant voltage value to the display device, and the display device displays the instant current value and the instant voltage value transmitted by the detection device for a detection person to watch.
3. The GIS internal foreign matter diagnosis device according to claim 1, wherein: the main controller comprises a starting signal generating module, a control signal generating module and a time delay module, wherein the signal source is connected with the control signal generating module in series, the time delay module is connected with the high-voltage controller in series, and the time delay module is also used for being connected with the circuit breaking controller in parallel; the starting signal generating module responds to the starting operation of an operator and outputs a starting signal to the control signal generating module; the control signal generating module responds to the starting signal to output a first control signal to the open circuit controller and the delay module of the GIS, and after the delay module delays for a preset time period, the received first control signal is used as a second control signal to be provided to the high-voltage controller.
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| CN202021785461.1U CN212540738U (en) | 2020-08-24 | 2020-08-24 | GIS internal foreign matter diagnosis device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948719A (en) * | 2020-08-24 | 2020-11-17 | 国网宁夏电力有限公司电力科学研究院 | GIS internal foreign matter diagnosis device and diagnosis method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948719A (en) * | 2020-08-24 | 2020-11-17 | 国网宁夏电力有限公司电力科学研究院 | GIS internal foreign matter diagnosis device and diagnosis method |
| CN111948719B (en) * | 2020-08-24 | 2024-06-04 | 国网宁夏电力有限公司电力科学研究院 | GIS internal foreign matter diagnosis device and diagnosis method |
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