CN113933567A - GIS isolator on-off state on-line monitoring system - Google Patents
GIS isolator on-off state on-line monitoring system Download PDFInfo
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- CN113933567A CN113933567A CN202111277313.8A CN202111277313A CN113933567A CN 113933567 A CN113933567 A CN 113933567A CN 202111277313 A CN202111277313 A CN 202111277313A CN 113933567 A CN113933567 A CN 113933567A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
- G01R31/3274—Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
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Abstract
The invention discloses a GIS disconnecting switch on-off state on-line monitoring system, which comprises: the Hall sensor is used for acquiring a motor current value of the isolating switch to be detected; the motor current values include: the motor current value of the isolating switch to be tested from open position to closed position and the motor current value of the isolating switch to be tested from closed position to open position; the monitoring device is connected with the Hall sensor through a shielded cable and an aviation connector; the monitoring device receives the motor current value and converts the motor current value into a current time waveform; the data analysis diagnostic instrument is wirelessly connected with the monitoring device; and the data analysis diagnostic instrument is used for acquiring the current time waveform and a normal current time waveform pre-stored in the monitoring device, comparing and analyzing the current time waveform and the normal current time waveform to obtain a state judgment result. Therefore, the condition that the opening and closing actions of the GIS isolating switch are in place is accurately judged, and the safety of electrical equipment is ensured.
Description
Technical Field
The invention relates to the technical field of data monitoring technology, in particular to an online monitoring system for the on-off state of a GIS isolating switch.
Background
In the power network, the role of the disconnector is to perform maintenance work for the electrical equipment and to change the mode of operation. If the electrical equipment which runs in a live-line mode is to be isolated from the equipment which is overhauled in a power failure mode or is in a standby mode, enough breaking distance is required, the open-type isolating switch can observe the action state of the isolating switch through naked eyes, and the isolating switch in the GIS equipment is sealed in the insulating cylinder, so that the condition that the movable contact and the static contact are closed in place cannot be directly observed, and the action state of the isolating switch can be indirectly judged only through a position pointer on the mechanism box, a closing and opening lamp in the control cubicle and a background position. Meanwhile, the isolating switch in the GIS equipment has the defects that a transmission shaft sleeve is broken, the position of a broken shaft and an in-place travel switch is not correct due to poor material of a connecting rod, the opening and closing of a mechanism are not in place, the distance between a moving contact and a static contact is not enough, the position judgment fails and the like, if the faults are found out in time, accident events such as 'pulling a disconnecting link with load' and 'transmitting power with a ground switch' can be caused, the integral operation of a power grid can be harmed under severe conditions, and the personal safety of a user can be threatened.
At present, scribing is carried out at a GIS connecting rod of the GIS isolating switch so as to confirm the condition that the GIS isolating switch is in place, but the method has the following defects: 1. mechanism connecting rods of part of manufacturers are arranged in the mechanism box and cannot be used for marking; 2. the scribing workload is large, and potential safety hazards exist in a large number of switching operations; 3. the observation means of the identification line is seriously insufficient, the GIS has a compact structure, blind areas exist in observation, and the observation is difficult at night; 4. if the transmission shaft and the moving contact are connected and are released, the marking mark cannot play a role. Therefore, the GIS isolating switch on-off state online monitoring system has important significance.
Disclosure of Invention
The invention provides an online monitoring system for the on-off state of a GIS isolating switch, which is used for accurately judging whether the on-off action of the GIS isolating switch is in place or not so as to ensure the safety of electrical equipment.
The invention provides a GIS disconnecting switch on-off state on-line monitoring system, which comprises:
the Hall sensor is used for acquiring a motor current value of the isolating switch to be detected; the motor current values include: the motor current value of the isolating switch to be tested from open position to closed position and the motor current value of the isolating switch to be tested from closed position to open position;
the monitoring device is connected with the Hall sensor through a shielded cable and an aviation connector; the monitoring device is used for receiving the motor current value and converting the motor current value into a current time waveform;
the data analysis diagnostic instrument is wirelessly connected with the monitoring device; and the data analysis diagnostic instrument is used for acquiring the current time waveform and a normal current time waveform pre-stored in the monitoring device, comparing and analyzing the current time waveform and the normal current time waveform to obtain a state judgment result.
Optionally, the system further comprises: scheduling a monitoring background; and the scheduling monitoring background is used for coordinating the execution sequence of the monitoring device under the condition that the number of the to-be-detected isolating switches is more than 1.
Optionally, the hall sensor is an open-close type hall sensor.
Optionally, the monitoring device comprises: the communication module, the optical coupler isolator electrical isolation circuit, the signal front end conditioning circuit, the analog-to-digital conversion circuit, the data storage unit and the network interface module are all connected with the single chip microcomputer measurement and control unit;
the communication module is used for realizing the transmission of the current time waveform and the normal current time waveform between the monitoring device and the data analysis diagnostic apparatus;
the optical coupler isolator electrical isolation circuit is used for carrying an optical coupler isolator to prevent the single chip microcomputer measurement and control unit from being interfered by electric connection;
the signal front-end conditioning circuit is used for amplifying and filtering the current value of the motor;
the analog-to-digital conversion circuit is used for converting the motor current value into a digital signal through A/D (analog/digital) to obtain the current time waveform;
the data storage unit is used for storing high-speed AD conversion data generated by the conversion of the analog-to-digital conversion circuit and the current time waveform;
the single chip microcomputer measurement and control unit is used for sampling the current time waveform and the normal current time waveform between the monitoring device and the data analysis diagnostic instrument;
and the network interface module is used for connecting the scheduling monitoring background with the monitoring device.
Optionally, the data storage unit includes: SRAM memory and FLASH memory;
the SRAM memory is used for storing high-speed AD conversion data generated by the conversion of the analog-to-digital conversion circuit;
and the FLASH memory is used for storing the current time waveform.
Optionally, the data analysis diagnostic apparatus comprises: the communication module, the action fault analysis module, the display screen, the micro printer and the second memory are all connected with the industrial personal computer;
the action fault analysis module is used for determining the state judgment result based on a fault model established in advance under the control of the industrial personal computer;
the display screen is used for displaying the current time waveform and the normal current time waveform;
and the micro printer is used for printing the current time waveform and the normal current time waveform.
Optionally, the communication module is specifically a bluetooth communication module.
Optionally, the industrial personal computer is specifically an embedded industrial personal computer.
Optionally, the data analysis diagnostic apparatus further comprises: rechargeable lithium battery pack.
Optionally, the housing of the monitoring device and the housing of the data analysis diagnostic apparatus are both made of ABS resin.
According to the technical scheme, the invention has the following advantages:
the invention discloses an online monitoring system for the on-off state of a GIS isolating switch, which comprises: the Hall sensor is used for acquiring a motor current value of the isolating switch to be detected; the motor current values include: the motor current value of the isolating switch to be tested from open position to closed position and the motor current value of the isolating switch to be tested from closed position to open position; the monitoring device is connected with the Hall sensor through a shielded cable and an aviation connector; the monitoring device is used for receiving the motor current value and converting the motor current value into a current time waveform; the data analysis diagnostic instrument is wirelessly connected with the monitoring device; and the data analysis diagnostic instrument is used for acquiring the current time waveform and a normal current time waveform pre-stored in the monitoring device, comparing and analyzing the current time waveform and the normal current time waveform to obtain a state judgment result.
Therefore, the current time waveform of the isolating switch to be detected is obtained through the Hall sensor and the monitoring device, and then the state judgment result of the current time waveform is determined by the data analysis diagnostic instrument, so that whether the opening and closing actions of the GIS isolating switch are in place or not can be judged, and the safe and stable operation of equipment and a power grid is ensured. Meanwhile, one data analysis diagnostic instrument can sequentially acquire the current time waveforms of a plurality of to-be-detected isolating switches, so that the cost of the device is reduced, and the economic benefit is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;
FIG. 1 is a schematic composition diagram of an embodiment of an online monitoring system for the on-off state of a GIS isolating switch, according to the invention;
FIG. 2 is a closed state diagram of a Hall sensor in an embodiment of the GIS isolating switch on-off state on-line monitoring system of the invention;
FIG. 3 is an opening state diagram of a Hall sensor in an embodiment of the GIS isolating switch on-off state on-line monitoring system of the invention;
FIG. 4 is a schematic composition diagram of a monitoring device of an embodiment of the GIS disconnecting switch on-off state on-line monitoring system of the invention;
FIG. 5 is a schematic structural diagram of a monitoring device of an embodiment of the GIS disconnecting switch on-off state on-line monitoring system of the invention;
FIG. 6 is a schematic diagram of a data analysis diagnostic apparatus in an embodiment of the GIS disconnecting switch on-off state on-line monitoring system of the present invention;
FIG. 7 is a schematic structural diagram of a data analysis diagnostic apparatus in an embodiment of the GIS disconnecting switch on-off state on-line monitoring system of the present invention;
fig. 8 is a normal action current-time characteristic curve of the on-off state on-line monitoring system of the GIS disconnecting switch according to the embodiment of the invention;
fig. 9 is a normal action current-time characteristic curve of an isolator from on position to off position in an embodiment of the online monitoring system for the on-off state of a GIS isolator of the present invention;
FIG. 10 is a schematic diagram of a schematic switch for simultaneously measuring multiple isolations under test by the on-site analyzer of the present invention.
In the figure: 1. a Hall sensor; 2. a monitoring device; 3. a data analysis diagnostic instrument; 4. scheduling a monitoring background; 21. a signal front-end conditioning circuit; 22. an analog-to-digital conversion circuit; 23. an optical coupler isolator electrical isolation circuit; 24. the single chip microcomputer measurement and control unit; 25. a data storage unit; 26. a network interface module; a communication module; 27. a communication module; 28. a wiring terminal; 29. a power supply communication indicator light; 30. a guide rail safety clamping groove; 31. a second memory; 32. a communication module; 33. an action fault analysis module; 34. a display screen; 35. a micro printer; 36. a cover is turned; 37. a charging interface; 38. a working switch; 39. moving the handle; 40. and an industrial personal computer.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1, fig. 1 is a schematic composition diagram of an embodiment of an online monitoring system for an on-off state of a GIS isolator according to the present invention, and the online monitoring system for an on-off state of a GIS isolator is mainly used for accurately determining whether an on-off operation of a GIS isolator is in place, so as to ensure the safety of electrical equipment.
Specifically, GIS isolator deciliter state on-line monitoring system includes:
the Hall sensor 1 is used for acquiring a motor current value of the isolating switch to be detected; the motor current values include: the motor current value of the isolating switch to be tested from open position to closed position and the motor current value of the isolating switch to be tested from closed position to open position;
the monitoring device 2 is connected with the Hall sensor 1 through a shielded cable and an aviation connector; the monitoring device 2 is used for receiving the motor current value and converting the motor current value into a current time waveform;
the data analysis diagnostic apparatus 3 is wirelessly connected with the monitoring device 2; the data analysis and diagnosis instrument 3 is used for acquiring the current time waveform and a normal current time waveform pre-stored in the monitoring device 2, comparing and analyzing the current time waveform and the normal current time waveform, and obtaining a state judgment result.
Referring to fig. 1, further, the system further includes: a dispatching monitoring background 4; and the scheduling monitoring background 4 is used for coordinating the execution sequence of the monitoring device 2 under the condition that the number of the to-be-tested isolating switches is more than 1.
In the embodiment of the present invention, the monitoring device 3 is connected to the scheduling monitoring background 4 to perform extended functions including coordinating the execution sequence of the monitoring device 2.
In an alternative embodiment, the hall sensor 1 is an open-close type hall sensor.
Referring to fig. 2 and 3, fig. 2 is a closed state diagram of a hall sensor in an embodiment of an online monitoring system for an on-off state of a GIS isolator of the present invention, and fig. 3 is an open state diagram of a hall sensor in an embodiment of an online monitoring system for an on-off state of a GIS isolator of the present invention, the length, width and height of the hall sensor are 57.65mm, 7.76mm and 24.86mm, respectively.
In the specific implementation, the open-close type Hall sensor adopts a single power supply for power supply, the output voltage is 2.5 +/-0.625V, and the maximum measuring range is 10A. The Hall element and the conditioning circuit are embedded in the open-close type Hall sensor, the maximum threading diameter is 15mm, and the bottom of the open-close type Hall sensor is electrically connected with the outside by adopting an aviation plug.
Referring to fig. 4, fig. 4 is a schematic composition diagram of a monitoring device of an embodiment of an online monitoring system for a GIS disconnecting switch on-off state of the present invention, further, the monitoring device 2 includes: the communication module 27, the optical coupler isolator electrical isolation circuit 23, the signal front end conditioning circuit 21, the analog-to-digital conversion circuit 22, the data storage unit 25 and the network interface module 26 are all connected with the single chip microcomputer measurement and control unit 24;
the communication module 27 is configured to implement transmission of the current time waveform and the normal current time waveform between the monitoring device 2 and the data analysis and diagnosis instrument 3;
the optical coupler isolator electrical isolation circuit 23 is used for carrying an optical coupler isolator to prevent the single chip microcomputer measurement and control unit from being interfered by electric connection;
the signal front-end conditioning circuit 21 is used for amplifying and filtering the motor current numerical value;
the analog-to-digital conversion circuit 22 is configured to convert the motor current value into a digital signal through an a/D, so as to obtain the current time waveform;
the data storage unit 25 is used for storing the high-speed AD conversion data generated by the conversion of the analog-to-digital conversion circuit 22 and the current time waveform;
the single chip measurement and control unit 24 is used for sampling the current time waveform and the normal current time waveform between the monitoring device 2 and the data analysis diagnostic apparatus 3;
the network interface module 26 is configured to connect the scheduling monitoring background 4 with the monitoring device.
In the embodiment of the invention, the front end signal adjusting circuit 21 amplifies and filters the output signal of the hall sensor 1, and then sends the amplified and filtered output signal to the analog-to-digital conversion circuit 22, and the analog-to-digital conversion circuit is sampled by the single chip microcomputer measurement and control unit 24 and then stored in the data storage unit 25.
Meanwhile, the switching value input circuit is used for recording the starting time and the stopping time of the motor, and a power supply loop of the GIS isolating switch operation motor is connected with the contactor and is provided with a plurality of auxiliary relay contacts, generally, four auxiliary contacts are arranged from an open position to a closed position, from an open position to an open position, and are respectively isolated by the optical coupling isolating circuit 23 and then sent to an IO input port of the single chip microcomputer measurement and control unit 24. The network interface module 26 is used for communicating with the scheduling monitoring background 4, and is an extensible function.
Further, the data storage unit 25 includes: SRAM memory and FLASH memory;
the SRAM memory is used for storing high-speed AD conversion data generated by the conversion of the analog-to-digital conversion circuit 22;
and the FLASH memory is used for storing the current time waveform.
In the embodiment of the present invention, the data storage unit 25 is composed of an SRAM memory and a high-capacity FLASH memory, the SRAM memory is used to temporarily store the high-speed AD conversion data, and the SRAM data is backed up to the high-capacity FLASH memory after the conversion is completed because the SRAM storage space is limited.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a monitoring device of an embodiment of the online monitoring system for the on-off state of the GIS disconnecting switch of the present invention, the length, width and height of the monitoring device 2 are respectively 68.9mm, 30mm and 100mm, the monitoring device 2 is installed by using a 35mm guide rail safety card slot 30, each hardware module is embedded and installed inside the card slot, a connection terminal 28 is arranged above the hardware module, and a plurality of power communication indicator lamps 29 are arranged on the front surface.
Referring to fig. 6, fig. 6 is a schematic composition diagram of a data analysis and diagnosis instrument according to an embodiment of the present invention, where the data analysis and diagnosis instrument 3 includes: the communication module 32, the action fault analysis module 33, the display screen 34, the micro printer 35 and the second memory 31 are all connected with the industrial personal computer 40;
the action fault analysis module 33 is configured to determine the state determination result based on a fault model established in advance under the control of the industrial personal computer 40;
the display screen 34 is used for displaying the current time waveform and the normal current time waveform;
the micro printer 35 is configured to print the current time waveform and the normal current time waveform.
In the embodiment of the invention, the data analysis diagnostic apparatus 3 consists of an industrial personal computer 40 with a dominant frequency of more than 1Ghz, a 10-inch full-touch color display screen 34, a micro printer 35 and a second memory 31 with a storage space of more than 100G.
In the specific implementation, the communication connection with an online monitor composed of the hall sensor 1 and the monitoring device 2 is realized through the combined action of all modules, an initial normal working state signal waveform database is established, a fault diagnosis criterion is established, and comparative analysis processing and fault diagnosis are performed by reading current switching-on and switching-off waveforms.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a data analysis and diagnosis instrument of an embodiment of the present invention of a GIS disconnecting switch on-off state online monitoring system, in which a flip cover 36 is disposed above the data analysis and diagnosis instrument, after the flip cover 36 is opened, a charging interface 37, a working switch 38 and a display screen 34 can be seen, and a moving handle is disposed at one side of the data analysis and diagnosis instrument 3.
In an alternative embodiment, the communication module 32 and the communication module 27 are embodied as bluetooth communication modules.
Specifically, the industrial personal computer 40 is an embedded industrial personal computer.
In an optional embodiment, the data analysis diagnostic apparatus further comprises: rechargeable lithium battery pack.
In the embodiment of the invention, the rechargeable lithium battery pack is built in, so that an external working power supply is not needed.
In an alternative embodiment, the housing of the monitoring device 2 and the housing of the data analysis diagnostic apparatus 3 are both made of ABS resin.
In addition, for the fault model in the action fault analysis module 33, the establishing step includes: (1) in the embodiment of the GIS disconnecting switch on-off state on-line monitoring system shown in fig. 8, the disconnecting switch extracts the characteristic parameters of the action curve from the normal action current-time characteristic curve from on position to off position, specifically, the curve comprises three stages of a motor starting period A, a stationary period B and a stopping period C, and the characteristic parameters I of the normal action curve are extracted through a comparison retrieval algorithm1And I2And corresponding time t1、t2、t3And t4. And extracting characteristic parameters of the current action curve in the same way, and establishing a fault diagnosis basis by comparing the characteristic curves: if no waveform characteristic quantity appears or is too small, judging that the motor is disconnected; if the action time is too long, the mechanism is jammed; if the fluctuation in the stationary period is large, jamming and the like appear in the period; (2) from a normal action current time characteristic curve from closed position to open position of the disconnecting switch of the GIS disconnecting switch on-off state on-line monitoring system embodiment shown in fig. 9, an action curve characteristic parameter is extracted, specifically, the curve includes: the method comprises four stages of a motor starting period D, a stable period E, an insertion period F and a shutdown period G, and is characterized in that a normal action curve characteristic parameter I is extracted1～I3And corresponding time t1～t6. Compared with the process from combination to phase splitting, the insertion process is added, and the insertion process is a larger moment generated when the moving contact and the static contact are inserted and butted and reflects the current characteristics of the motor. And establishing a fault diagnosis basis by comparing the characteristic curves of the two: if the insertion period does not exist, just closing the switch is not in place; if no waveform characteristic quantity appears or is too small, judging that the motor is disconnected; if the action time is too long, the mechanism is jammed; if the stationary phase fluctuation is large, jamming and the like appear in the section.
The invention provides a GIS disconnecting switch on-off state on-line monitoring system, which comprises: the Hall sensor 1 is used for acquiring a motor current value of the isolating switch to be detected; the motor current values include: the motor current value of the isolating switch to be tested from open position to closed position and the motor current value of the isolating switch to be tested from closed position to open position; the monitoring device 2 is connected with the Hall sensor 1 through a shielded cable and an aviation connector; the monitoring device 2 is used for receiving the motor current value and converting the motor current value into a current time waveform; the data analysis diagnostic apparatus 3 is wirelessly connected with the monitoring device 2; the data analysis and diagnosis instrument 3 is used for acquiring the current time waveform and a normal current time waveform pre-stored in the monitoring device 2, comparing and analyzing the current time waveform and the normal current time waveform, and obtaining a state judgment result.
Therefore, the current time waveform of the isolating switch to be detected is obtained through the Hall sensor 1 and the monitoring device 2, and then the state judgment result of the current time waveform is determined by the data analysis diagnostic instrument 3, so that whether the opening and closing action of the GIS isolating switch is in place or not can be judged, and the equipment and the power grid can safely and stably operate. Meanwhile, one data analysis and diagnosis instrument 3 can simultaneously measure a schematic diagram of a plurality of to-be-tested isolation principle switches by using the field analyzer of the present invention as shown in fig. 10, and obtain current time waveforms of a plurality of to-be-tested isolation switches through the communication module 27, so that the device cost and the measurement time are reduced, and the economic benefit is ensured.
It should be understood that in the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. The utility model provides a GIS isolator deciliter state on-line monitoring system which characterized in that includes:
the Hall sensor is used for acquiring a motor current value of the isolating switch to be detected; the motor current values include: the motor current value of the isolating switch to be tested from open position to closed position and the motor current value of the isolating switch to be tested from closed position to open position;
the monitoring device is connected with the Hall sensor through a shielded cable and an aviation connector; the monitoring device is used for receiving the motor current value and converting the motor current value into a current time waveform;
the data analysis diagnostic instrument is wirelessly connected with the monitoring device; and the data analysis diagnostic instrument is used for acquiring the current time waveform and a normal current time waveform pre-stored in the monitoring device, comparing and analyzing the current time waveform and the normal current time waveform to obtain a state judgment result.
2. The GIS disconnecting switch on-off state online monitoring system according to claim 1, further comprising: scheduling a monitoring background; and the scheduling monitoring background is used for coordinating the execution sequence of the monitoring device under the condition that the number of the to-be-detected isolating switches is more than 1.
3. The GIS disconnecting switch on-off state online monitoring system according to claim 1, wherein the Hall sensor is an open-close type Hall sensor.
4. The GIS disconnecting switch on-off state online monitoring system according to claim 1, wherein the monitoring device comprises: the communication module, the optical coupler isolator electrical isolation circuit, the signal front end conditioning circuit, the analog-to-digital conversion circuit, the data storage unit and the network interface module are all connected with the single chip microcomputer measurement and control unit;
the communication module is used for realizing the transmission of the current time waveform and the normal current time waveform between the monitoring device and the data analysis diagnostic apparatus;
the optical coupler isolator electrical isolation circuit is used for carrying an optical coupler isolator to prevent the single chip microcomputer measurement and control unit from being interfered by electric connection;
the signal front-end conditioning circuit is used for amplifying and filtering the current value of the motor;
the analog-to-digital conversion circuit is used for converting the motor current value into a digital signal through A/D (analog/digital) to obtain the current time waveform;
the data storage unit is used for storing high-speed AD conversion data generated by the conversion of the analog-to-digital conversion circuit and the current time waveform;
the single chip microcomputer measurement and control unit is used for sampling the current time waveform and the normal current time waveform between the monitoring device and the data analysis diagnostic instrument;
and the network interface module is used for connecting the scheduling monitoring background with the monitoring device.
5. The GIS disconnecting switch on-off state online monitoring system according to claim 4, wherein the data storage unit comprises: SRAM memory and FLASH memory;
the SRAM memory is used for storing high-speed AD conversion data generated by the conversion of the analog-to-digital conversion circuit;
and the FLASH memory is used for storing the current time waveform.
6. The GIS disconnecting switch on-off state on-line monitoring system according to claim 1, wherein the data analysis diagnostic instrument comprises: the communication module, the action fault analysis module, the display screen, the micro printer and the second memory are all connected with the industrial personal computer;
the action fault analysis module is used for determining the state judgment result based on a fault model established in advance under the control of the industrial personal computer;
the display screen is used for displaying the current time waveform and the normal current time waveform;
and the micro printer is used for printing the current time waveform and the normal current time waveform.
7. The GIS disconnecting switch on-off state online monitoring system according to claim 4 or 6, wherein the communication module is specifically a Bluetooth communication module.
8. The GIS disconnecting switch on-off state online monitoring system according to claim 6, wherein the industrial personal computer is specifically an embedded industrial personal computer.
9. The GIS disconnecting switch on-off state on-line monitoring system according to claim 6, wherein the data analysis diagnostic instrument further comprises: rechargeable lithium battery pack.
10. The GIS disconnecting switch on-off state online monitoring system according to claim 4 or 6, wherein the shell of the monitoring device and the shell of the data analysis diagnostic instrument are both made of ABS resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111277313.8A CN113933567A (en) | 2021-10-29 | 2021-10-29 | GIS isolator on-off state on-line monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111277313.8A CN113933567A (en) | 2021-10-29 | 2021-10-29 | GIS isolator on-off state on-line monitoring system |
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| CN113933567A true CN113933567A (en) | 2022-01-14 |
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