CN107515108B - The mechanical property monitoring device and monitoring method of high voltage isolating switch operating mechanism - Google Patents
The mechanical property monitoring device and monitoring method of high voltage isolating switch operating mechanism Download PDFInfo
- Publication number
- CN107515108B CN107515108B CN201710617195.8A CN201710617195A CN107515108B CN 107515108 B CN107515108 B CN 107515108B CN 201710617195 A CN201710617195 A CN 201710617195A CN 107515108 B CN107515108 B CN 107515108B
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- Prior art keywords
- high voltage
- operating mechanism
- isolating switch
- switch operating
- bit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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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
Abstract
The present invention relates to the mechanical property monitoring devices and monitoring method of a kind of high voltage isolating switch operating mechanism, belong to machine control techniques field.The device includes input interface, other interfaces and microprocessor for items such as communications that some state parameters determine.It is as follows using the method and step of the device, 1) data sampling；2) the first current versus time curve and first stroke-time graph are drawn；3) data are analyzed；4) further order is waited.Whether this is normal according to current versus time curve and the indirect detection and isolation switch working state of stroke-time graph changing rule, so that the mechanical property of high voltage isolating switch operating mechanism can be monitored by being not required to destruction enclosed construction.
Description
Technical field
The present invention relates to the mechanical property monitoring devices and monitoring method of a kind of high voltage isolating switch operating mechanism, belong to machine
Tool control technology field.
Background technique
The fast development of social economy results in the continuous improvement to power system requirements, while the also day of the demand to energy
Benefit increases, this proposes more strict requirements to the stability and economy of electric system.In electric power networks, disconnecting switch
Effect be in order to repair and maintenance work and the method for operation transformation needs, by the electrical equipment and interruption maintenance of charging operation
Or come in spare equipment blocking, it is desirable that there must be enough cut-off distances.Open isolating switch can be seen by naked eyes
Disconnecting switch action state is examined, but the disconnecting switch in GIS device is enclosed in insulating cylinder, sound cannot be directly observed
The opening and closing in place situation of contact, the position indicator pointer on mechanism case, the divide-shut brake lamp in convergence control cabinet and backstage position can only be passed through
Carry out the action state of indirect judgement disconnecting link.International conference on large HV electric systems statistical data shows that the GIS fault isolating switch overwhelming majority is come
From in mechanical aspects, therefore studying disconnecting switch mechanical fault diagnosis has particularly important meaning, for the peace for guaranteeing switchgear
Row for the national games is badly in need of a kind of performance monitoring method for not destroying enclosed construction.
Summary of the invention
The invention solves the first technical problem be, in view of the shortcomings of the prior art, proposing a kind of for GIS high_voltage isolation
The mechanical property monitoring device of switch operating mechanism.
The present invention is for the technical solution for solving the proposition of the first technical problem: the machinery of high voltage isolating switch operating mechanism
Characteristic monitoring device, including ground connection position is inputted to the input of isolation order of the bit, isolated bit to ground connection order of the bit, Hall current sensing
Device, the first optical coupling isolation circuit, the second optical coupling isolation circuit, signal conditioning circuit, microprocessor circuit, addressing circuit,
State instruction warning circuit, motor absolute value encoder, display circuit, key circuit, communication interface circuit, data storage electricity
Road, power circuit；Ground connection position is connect to isolation order of the bit input with the input terminal of the first optical coupling isolation circuit, the first light-coupled isolation
The output end of circuit is connect with I/O mouthfuls of microprocessor circuit input terminal；Isolated bit to ground connection order of the bit input with the second optocoupler every
Input terminal connection from circuit, the output end of the second optical coupling isolation circuit are connect with I/O mouthfuls of microprocessor circuit input terminal；Hall
The output end of current sensor and the input terminal of signal conditioning circuit connect, output end and the microprocessor electricity of signal conditioning circuit
The connection of the road port A/D；The output end of addressing circuit and key circuit is connect with the I/O mouth of microprocessor circuit input terminal；
The input terminal of state instruction warning circuit and display circuit is connect with the I/O mouth of microprocessor circuit output end；Motor absolute value
The output end of encoder is connect with the I/O of microprocessor circuit input terminal mouth；The input terminal and microprocessor of communication interface circuit
Circuit corresponds to port connection；The input terminal of data storage circuitry and microprocessor circuit output end I /O mouthfuls connect；Power supply electricity
The output end on road and the power port of microprocessor circuit connect.
The improvement of above-mentioned technical proposal is: the Hall current sensor is for obtaining current versus time curve, the motor
Absolute value encoder is for obtaining stroke-time graph.
The improvement of above-mentioned technical proposal is: the state output relay of the high voltage isolating switch operating mechanism connects with described
Status is connected to the input of isolation order of the bit and/or the isolated bit to ground connection order of the bit input
The improvement of above-mentioned technical proposal is: the microprocessor uses STM32 microcontroller.
The beneficial effect of the present invention by adopting the above technical scheme is: by Hall current sensor and motor absolute encoder
Device gets the related data and motor angle data of current of electric, is derived using these data and is opened with high_voltage isolation indirectly
It closes the relevant some mechanical property datas of operating mechanism and is not destroying closed mechanical structure by analyzing these data
In the case where, analysis monitoring is carried out to mechanical performance.
The invention solves the second technical problem be, in view of the shortcomings of the prior art, proposing that a kind of application high_voltage isolation is opened
Close the method that the mechanical property monitoring device of operating mechanism carries out the monitoring of high voltage isolating switch operating mechanism mechanical property.
The present invention is for the technical solution for solving the proposition of the second technical problem: 1) monitoring device receives ground connection position
To isolation order of the bit, current of electric and motor angle data to the high voltage isolating switch operating mechanism are sampled；
2) the first current versus time curve and first stroke-time graph are drawn according to data in step 1)；
3) recording step 2) in the curve drawn, store corresponding with curve data information, analyze the curve and data
Information；
If the envelope line chart of first current versus time curve exceeds reference current-time graph envelope line chart ± 5%
Range, then the high voltage isolating switch operating mechanism issues alarm signal and simultaneously executes step 4) there are bite；
If the envelope line chart of first current versus time curve is in envelope diagram ± 5% of the reference current-time graph
In the range of, it thens follow the steps 4)；
First current versus time curve, the driving of the high voltage isolating switch operating mechanism are stored if failing
Electrical-coil broken string, signal an alert simultaneously execute step 4)；
If successfully storing first current versus time curve, then follow the steps 4)；
If first stroke-the time graph is less than benchmark stroke-time graph, the high voltage isolator operates machine
The isolation knife and earthing of structure are not in place, issue alarm signal and execute step 4)；
If first stroke-the time graph is greater than or equal to benchmark stroke-time graph, then follow the steps 4)；
Reference current-the time graph and the stroke-time graph are high voltage isolating switch operating mechanism investment
The curve saved when operation；
4) isolated bit to be received such as described monitoring device arrives isolation order of the bit to ground connection order of the bit/ground connection position.
The improvement of above-mentioned technical proposal is: the ground connection position to isolation order of the bit input is defeated to ground connection order of the bit with isolated bit
Enter and is connected by the state output relay with the high voltage isolating switch operating mechanism to obtain high voltage isolator and be isolated
Knife and or earthing state position information, to learn that high voltage isolator isolation knife and earthing present position are to be in
Isolated bit ground connection position.
The improvement of above-mentioned technical proposal is: current versus time curve is obtained by Hall current sensor, it is absolute by motor
It is worth encoder and obtains stroke-time graph.
The beneficial effect of the present invention by adopting the above technical scheme is: (1) first to the motor during disconnecting switch division
Electric current carries out data sampling, carries out mathematical analysis to sampled data feedback to analysis module, determines that disconnecting link is based on the analysis results
No there are card resistances serious, disconnecting link division process whether open meet the requirements away from/insertion depth by good, dynamic/static contact, fills
Set the operational reliability that research and development effectively improve power grid at function.(2) according to current versus time curve and stroke-time graph
The indirect detection and isolation switch working state of changing rule it is whether normal, i.e., monitoring operation mechanism with the presence or absence of bite, driving electricity
Whether in place etc. whether machine coil break, be isolated and be grounded position information, to ensure that isolated switchgear is safely operated.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings:
Fig. 1 is the structural block diagram of the mechanical property monitoring device of the high voltage isolating switch operating mechanism of the embodiment of the present invention.
Fig. 2 is the flow chart of the high voltage isolating switch operating mechanism mechanical property monitoring method of the embodiment of the present invention.
Specific embodiment
Embodiment
The mechanical property monitoring device of the high voltage isolating switch operating mechanism of the present embodiment, as shown in Figure 1, including ground connection position
To the input of isolation order of the bit, isolated bit to ground connection order of the bit input, Hall current sensor, the first optical coupling isolation circuit, second
Optical coupling isolation circuit, signal conditioning circuit, microprocessor circuit, addressing circuit, state instruction warning circuit, motor are absolute
It is worth encoder, display circuit, key circuit, communication interface circuit, data storage circuitry, power circuit；Position is grounded to isolated bit
Order input is connect with the input terminal of the first optical coupling isolation circuit, the output end and microprocessor circuit of the first optical coupling isolation circuit
I/O mouthfuls of input terminal connections；Isolated bit is connect to ground connection order of the bit input with the input terminal of the second optical coupling isolation circuit, the second optocoupler
The output end of isolation circuit is connect with I/O mouthfuls of microprocessor circuit input terminal；The output end and signal tune of Hall current sensor
The input terminal connection of circuit is managed, the output end of signal conditioning circuit is connect with the port microprocessor circuit A/D；Addressing circuit
It is connect with the output end of key circuit with the I/O of microprocessor circuit input terminal mouth；State instruction warning circuit and display circuit
Input terminal connect with the I/O of microprocessor circuit output end mouth；Output end and the microprocessor electricity of motor absolute value encoder
The I/O mouth of road input terminal connects；The port connection corresponding with microprocessor circuit of the input terminal of communication interface circuit；Data storage
The input terminal of circuit and microprocessor circuit output end I /O mouthfuls connect；The output end of power circuit and microprocessor circuit
Power port connection.
The Hall current sensor of the present embodiment is for obtaining current versus time curve, and motor absolute value encoder is for obtaining
Obtain stroke-time graph.
The state output relay of the high voltage isolating switch operating mechanism of the present embodiment and ground connection position are defeated to order of the bit is isolated
Enter and/or isolated bit is connected to ground connection order of the bit input
The microprocessor of the present embodiment uses STM32 microcontroller.
As shown in Fig. 2, the side being monitored using mechanical property of the above-mentioned device to high voltage isolating switch operating mechanism
Method,
1) monitoring device receives ground connection position to isolation order of the bit, to the current of electric of high voltage isolating switch operating mechanism with
Motor angle data is sampled；
2) the first current versus time curve and first stroke-time graph are drawn according to data in step 1)；
3) recording step 2) in the curve drawn, store corresponding with curve data information, analysis curve and data information；
If the envelope line chart of the first current versus time curve exceeds the model of reference current-time graph envelope line chart ± 5%
It encloses, then there are bites for high voltage isolating switch operating mechanism, issue alarm signal and execute step 4)；
If the envelope line chart of the first current versus time curve is in the range of reference current-time graph envelope diagram ± 5%
It is interior, it thens follow the steps 4)；
If failing the first current versus time curve of storage, the driving motor coil of high voltage isolating switch operating mechanism
Broken string, signal an alert simultaneously execute step 4)；
If successfully storing the first current versus time curve, then follow the steps 4)；
If first stroke-time graph is less than benchmark stroke-time graph, the isolation of high voltage isolating switch operating mechanism
Knife and earthing are not in place, issue alarm signal and execute step 4)；
If first stroke-time graph is greater than or equal to benchmark stroke-time graph, then follow the steps 4)；
Reference current-time graph and stroke-time graph are that high voltage isolating switch operating mechanism puts into operation when institute
The curve of preservation；
4) isolated bit to be received such as monitoring device arrives isolation order of the bit to ground connection order of the bit/ground connection position.
In the above-mentioned methods, by ground connection position to isolation order of the bit input with isolated bit to be grounded order of the bit input by with
The state output relay of high voltage isolating switch operating mechanism be connected obtain high voltage isolator isolation knife and or earthing
State position information, thus learn high voltage isolator isolation knife and earthing present position be in isolated bit ground connection position,
To realize that the real-time circulation to high voltage isolating switch operating mechanism monitors.
The present embodiment is to be acquired by Hall current sensor, and be used for for drawing the data of current versus time curve
Drawing stroke-time graph data is acquired by motor absolute value encoder.
The present embodiment measures the motor corner of high voltage isolating switch operating mechanism by motor absolute value encoder, according to electricity
Machine rotational angle judges the stroke of operating mechanism, i.e., there are one-to-one relationships for the stroke of motor corner and operating mechanism, with this
To obtain stroke-time graph of high voltage isolating switch operating mechanism, and the current break in coupling coil current versus time curve
Put the total kilometres, extended distance and edge of a knife distance to judge high voltage isolating switch operating mechanism.Disconnecting switch from isolated bit to
Be grounded position, or ground connection position arrive isolated bit when, from bringing into operation to in the edge of a knife cohesive process current of electric working it is more steady, and into
Enter after the edge of a knife by edge of a knife drag effects, electric current increases suddenly, i.e., from electric current increases to electric current at this time and terminate this section of process and be exactly
Edge of a knife distance, total kilometres subtract the edge of a knife apart from instant extended distance.By the monitoring to this two groups of data, can effectively improve
The operating reliability of GIS high voltage isolator reduces the workload and cost of maintenance and maintenance.
The present invention is not limited to the above embodiment.All technical solutions formed using equivalent replacement, are all fallen within the present invention and wanted
The protection scope asked.
Claims (3)
1. a kind of method of high voltage isolating switch operating mechanism mechanical property monitoring, it is characterised in that executed such as using monitoring device
Lower step:
1) monitoring device receives ground connection position to isolation order of the bit, to the motor electricity of the high voltage isolating switch operating mechanism
Stream and motor angle data are sampled；
2) the first current versus time curve and first stroke-time graph are drawn according to data in step 1)；
3) recording step 2) in the curve drawn, store corresponding with curve data information, analyze the curve and data information；
If the envelope line chart of first current versus time curve exceeds the model of reference current-time graph envelope line chart ± 5%
It encloses, then there are bites for the high voltage isolating switch operating mechanism, issue alarm signal and execute step 4)；
If the envelope line chart of first current versus time curve is in the model of envelope diagram ± 5% of the reference current-time graph
In enclosing, then follow the steps 4)；
First current versus time curve, the driving motor of the high voltage isolating switch operating mechanism are stored if failing
Coil breakage, signal an alert simultaneously execute step 4)；
If successfully storing first current versus time curve, then follow the steps 4)；
If first stroke-the time graph is less than benchmark stroke-time graph, the high voltage isolating switch operating mechanism
Isolation knife and earthing are not in place, issue alarm signal and execute step 4)；
If first stroke-the time graph is greater than or equal to benchmark stroke-time graph, then follow the steps 4)；
Reference current-the time graph and benchmark stroke-time graph are high voltage isolating switch operating mechanism investment
The curve saved when operation；
4) isolated bit to be received such as described monitoring device arrives isolation order of the bit to ground connection order of the bit/ground connection position.
2. the method for high voltage isolating switch operating mechanism mechanical property monitoring according to claim 1, it is characterised in that: institute
Ground connection position is stated to the input of isolation order of the bit and isolated bit to the input of ground connection order of the bit by operating machine with the high voltage isolator
The state output relay of structure be connected obtain high voltage isolator isolation knife and or earthing state position information, from
And learn high voltage isolator isolation knife and earthing present position be in isolated bit ground connection position.
3. the method for high voltage isolating switch operating mechanism mechanical property monitoring according to claim 1, it is characterised in that: logical
It crosses Hall current sensor and obtains the first current versus time curve, it is bent to obtain first stroke-time by motor absolute value encoder
Line.
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| CN201710617195.8A CN107515108B (en) | 2017-07-26 | 2017-07-26 | The mechanical property monitoring device and monitoring method of high voltage isolating switch operating mechanism |
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| CN201710617195.8A CN107515108B (en) | 2017-07-26 | 2017-07-26 | The mechanical property monitoring device and monitoring method of high voltage isolating switch operating mechanism |
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| CN107515108B true CN107515108B (en) | 2019-10-18 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110286318A (en) * | 2019-05-05 | 2019-09-27 | 国网浙江海盐县供电有限公司 | A kind of portable high-pressure disconnecting switch mechanical property detector and method |
| CN110530625A (en) * | 2019-09-17 | 2019-12-03 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of high voltage isolator mechanical fault diagnosis device and method |
| CN110806310B (en) * | 2019-09-27 | 2022-04-26 | 国网浙江省电力有限公司杭州供电公司 | Online monitoring method and device for mechanical characteristics of high-voltage isolating switch operating mechanism |
| CN111141503A (en) * | 2019-12-20 | 2020-05-12 | 国网浙江海盐县供电有限公司 | Portable GIS isolating switch operating mechanism mechanical characteristic tester and testing method |
| CN111722102A (en) * | 2020-06-08 | 2020-09-29 | 国网辽宁省电力有限公司电力科学研究院 | Instrument and method for analyzing action reliability of 252kV GIS internal isolation switch |
| CN113484741A (en) * | 2021-06-09 | 2021-10-08 | 国网浙江海盐县供电有限公司 | GIS disconnecting switch working state monitoring device and method |
| CN114325365A (en) * | 2021-11-26 | 2022-04-12 | 国网辽宁省电力有限公司电力科学研究院 | Method for evaluating dynamic characteristics of isolating switch in GIS |
| CN114336974A (en) * | 2022-01-06 | 2022-04-12 | 广州市扬新技术研究有限责任公司 | Monitoring method for isolating switch cabinet |
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