CN108548623A - A method of on-line monitoring high-voltage breaker mechanism spring force value - Google Patents
A method of on-line monitoring high-voltage breaker mechanism spring force value Download PDFInfo
- Publication number
- CN108548623A CN108548623A CN201810258421.2A CN201810258421A CN108548623A CN 108548623 A CN108548623 A CN 108548623A CN 201810258421 A CN201810258421 A CN 201810258421A CN 108548623 A CN108548623 A CN 108548623A
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- Prior art keywords
- spring
- breaker
- force value
- load cell
- line monitoring
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0057—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to spring-shaped elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The method that the present invention discloses a kind of on-line monitoring grid circuit breaker mechanism energy-stored spring, realize that early warning spring breakage and fatigue relaxation are latched with action, it develops spring mechanism and monitors system, realize long term monitoring and pre-alarm in advance, the spring life appraisement system under multiple-factor criterion is established, information data and instruction are provided.Innovative point is that load cell acquires the variation of the real-time force value of spring mechanism in real time, obtain the data information of the fracture of spring workpiece and fatigue relaxation in advance under spring normal operating conditions data information and spring abnormal condition, the correspondence of spring force value and switching characteristic parameter is established, the failure of breaker mechanism spring is solved.The state for monitoring energy-stored spring in real time by load cell, to spring force value abnormity early warning.The force value and spring preset value for comparing spring, judge whether working normally.And data are analyzed, are summarized, are evaluated, early warning and alarm, improve the safe and stable operation ability of power grid.
Description
Technical field
The present invention relates to the technical field of grid circuit breaker more particularly to a kind of on-line monitoring high-voltage breaker mechanism energy storage
The technical method of spring force value.
Background technology
Breaker is the electric current for referring to close, carry and cut-off under normal loop condition and can close, when defined
Interior carrying and the switching device for cut-offfing the electric current under abnormal loop condition.Breaker can be used to distribute electric energy, infrequently open
Dynamic asynchronous motor protects the implementations such as power circuit and motor, when serious overload or short circuit and under-voltage occurs in they
Etc. failures when can automatic shutdown circuit, function is equivalent to Fuse switch and crosses the combination of underheat relay etc..And
Parts need not be generally changed after disjunction fault current.Currently, having had been widely used.
Currently, breaker used in power grid is at work, internal spring operation need with rotating bar and divide/
Switching-in spring cooperating, after frequently being compressed and being affected by, elastic force can occur tripping spring
Change, if its elastic force is not achieved so that the standard that spring operation resets, is easy to cause the failure of separating brake process, then leads
Breaker is caused to lose the protective effect to power grid；In addition to this, the touch spring used in breaker there is also aging change
The problem of shape, can cause contacting travel to shorten if standard is not achieved in value of elastic, then so that can not be into after breaker open operation
Row closes a floodgate, and eventually leads to breaker failure, influences the normal power Transmission of power grid.
The stress of the breaker mechanism spring run in power grid never has more particularly suitable effective monitoring means,
The spring of operating status is difficult to find from outside going wrong, leads to some potential faults, seriously threaten the people
Life security and national wealth safety.It is disconnected there are no being detected with sensor up to now by being found to the retrieval of similar approach
The size of the force value of road device mechanism energy-stored spring reflects this detection method of the force value size of breaker mechanism spring.
Spring is had focused largely on to the accident analysis of the mechanism spring of breaker both at home and abroad to refuse point, refuse to close and division is not in place
On, the fracture and fatigue relaxation research for spring itself are seldom, also have no corresponding on-site detecting device and monitoring both at home and abroad
System emerges, and the actually breaker spring fracture wear-out failure frequency of occurrences is higher, is the principal mode of spring mechanism, serious shadow
Ring the operational safety of power equipment and power grid.
It finds that it is contacts for vacuum-break switches on-line monitoring method to have the inventive method of open state at present by retrieving, is logical
The next wear extent for obtaining contact indirectly of decrement for crossing monitoring touch spring passes through contact to judge whether contact needs replacing
The temperature of moving conductive rod, the method for calculating the real-time pressure of contact.This method characteristic is mainly indirect monitoring contact head abrasive loss,
Accuracy height is the discussion of value, because the characteristic of spring is that, without departing from Flexible change range, wear extent is difficult
It is calculated, also the wear extent of the spring of different materials is also not quite similar, and the shot and long term wear extent of spring usage time does not have yet
It is regular to follow, it is difficult to the wear extent that contact is accurately reacted according to the decrement of spring, the decrement got and abrasion
The error of amount also can objective reality；The measurement error of also moving conductive rod temperature is also bigger.
With the upgrading of the development and transformer equipment technology of power grid, building security is reliable, technologically advanced, intelligent and high-efficiency
Third generation intelligent substation have become the trend of Future Development.To breaker apparatus state and automatic early-warning function carry
New requirement is gone out, for this purpose, we have proposed a kind of methods of on-line monitoring high-voltage breaker mechanism energy-stored spring value of elastic to come
It solves the above problems, advanced sensing technology, the information of depth perception equipment state is on the one hand applied to promote breaker apparatus
Safety coefficient effectively recognizes the status information of breaker apparatus, by intelligentized information system come the healthy shape of diagnostic device
Condition, the state of long term monitoring breaker mechanism energy-stored spring, sends out early warning, alarm signal automatically, prevents the generation of accident in advance.
Invention content
Technical problems based on background technology, the present invention propose a kind of on-line monitoring high-voltage breaker mechanism energy storage
The method of spring force value.By the detection technique to breaker energy storage spring, breaker mechanism monitoring system can be developed, is come
It realizes be monitored and give warning in advance with fatigue relaxation to whether spring is broken, establishes the spring life evaluation under multiple-factor criterion
System provides information data instruction for the state evaluation of equipment.
A kind of method of on-line monitoring high-voltage breaker mechanism energy-stored spring value of elastic proposed by the present invention, including following step
Suddenly：
S1 measures the variation of combined floodgate breaker spring and the real-time force value of separating brake breaker spring using load cell in real time；
S2, the force value that spring is subject to when measuring breaker each splitting or integrating lock, and the force value suffered by spring is dispatched from the factory with spring producer
Preset value is compared, to judge whether spring is working normally, if pre-, alarm is not sent out in normal range (NR), to protect
Demonstrate,prove the normal trouble free service of grid circuit breaker mechanism；
The signal output end of S3, load cell are electrically connected with the signal input part of controller respectively, the letter of the controller
Number output end is electrically connected with alarm, power when load cell detection point/switching-in spring work, and will divide switching-in spring
Force value be transmitted in control unit, real-time detected value is compared with preset value, is judged point/whether switching-in spring work
Normally, if tripping spring is in abnormal operating state, controller controls alarm work.
Preferably, the load cell is installed in series on breaker spring pallet.
Preferably, the load cell is mounted on breaker spring upper end.
Preferably, the load cell is mounted on breaker spring pull rod.
Preferably, the load cell is to paste strain gauge on breaker spring pull rod to make breaker spring pull rod
At sensor.
Beneficial effects of the present invention are as follows：
1, the invention unique distinction is just being directly connected to spring and spring together while stress with load cell, and dynamometry passes
Sensor is directly linked together with spring, directly reacts the size of spring institute stress value, and acquisition stress data goes out with spring producer
The design value of factory compares, and will soon find whether the elastic force balance state of spring is normal, the whether weak relaxation of spring, if disconnected
It splits, if normal operating conditions.To solve the problems, such as to be difficult to spring of pinpointing the problems in time from outside, and sent out by floppy disk system
Go out alarm, be convenient for timely replacement problem spring, reduces circuit breaker failure and greatly improve operation of power networks to avoid that accident occurs
Safety and reliability.And the size by acquiring load cell institute stress value, carry out data analysis, evaluation, judgement,
The long-term real time on-line monitoring of spring is realized in pre-alarm etc..
2, the stress of spring is directly reacted in sensor and the direct power transmission of spring, has monitoring accuracy height, real-time
By force, accuracy is high, and the low advantage of False Rate can effectively ensure Monitoring Performance precision.Load cell is easy for installation, is convenient for
Dismounting etc., load cell can periodically timing inspection country third party authority's calibration authority ensure the quality of load cell
And precision, while can also ensure the performance of load cell using the sensor calibration equipment of Portable movable, also just protect
The precision for having demonstrate,proved this monitoring method is high, and reliability is high, substantially reduces the spring failure rate of breaker mechanism, improves operation of power networks
Safety and reliability.
3, load cell can acquire the moment stress data of spring, and reliable data output.
4, the state that the long-term short-circuiting device spring stress of monitoring in real time may be implemented, avoids spring from causing to damage because of long-term stress
Or moment is damaged by explosive force.
Description of the drawings
Fig. 1 is in a kind of method for on-line monitoring high-voltage breaker mechanism spring force value that the present invention goes out：1, dynamometry passes
The attachment structure schematic diagram of sensor 2, breaker spring pallet 3, breaker mechanism spring 4, breaker spring pull rod；
Fig. 2 is the structural schematic diagram of embodiment one in the present invention；
Fig. 3 is the structural schematic diagram of embodiment two in the present invention；
Fig. 4 is the structural schematic diagram of embodiment three in the present invention；
Fig. 5 is the structural schematic diagram of example IV in the present invention；
The electricity of sensing system in a kind of method for on-line monitoring high-voltage breaker mechanism spring force value that Fig. 6 goes out for the present invention
Lu Tu.
In figure：1 load cell, 2 breaker spring pallets, 3 breaker mechanism springs, 4 breaker spring pull rods.
Specific implementation mode
The present invention is made further to explain with reference to specific embodiment.
The present invention proposes a kind of method of on-line monitoring high-voltage breaker mechanism spring force value, includes the following steps：
S1 measures the variation of combined floodgate breaker spring and the real-time force value of separating brake breaker spring using load cell 1 in real time；
S2, the force value that breaker spring is subject to when measuring breaker each splitting or integrating lock, and by suffered by breaker spring force value with
Breaker spring producer preset value is compared, to judge whether breaker spring is working normally, if not normal
Range sends out pre-, alarm, to ensure the normal trouble free service of grid circuit breaker mechanism；
The signal output end of S3, load cell 1 are electrically connected with the signal input part of controller respectively, the letter of the controller
Number output end is electrically connected with alarm, the power when detection point of load cell 1/combined floodgate breaker spring work, and will point/close
The force value of lock breaker spring is transmitted in control unit, and real-time detected value is compared with preset value, judges to divide/close a floodgate
Whether breaker spring is working properly, if separating brake breaker spring is in abnormal operating state, controller controls alarm
Work.
Following embodiment is only one of several connection application processes in the present invention, the model without being intended to the limitation present invention
It encloses.
Embodiment 1
As shown in Fig. 2, the load cell 1 is installed in series on breaker spring pallet 2, such mounting means breaker bullet
The pressure of spring is added in by load cell 1 on breaker spring pull rod 4, is judged the variation of force value by load cell 1
Whether breaker spring is working normally.
Embodiment 2
As shown in figure 3, the load cell 1 is mounted on breaker spring upper end, such mounting means is breaker spring
Pressure acts on load cell 1 and breaker spring pull rod 4 simultaneously, is judged by the variation of 1 force value of load cell disconnected
Whether road device spring is working normally.
Embodiment 3
As shown in figure 4, the load cell 1 is mounted on breaker spring pull rod 4, such mounting means breaker spring
Pressure becomes pulling force effect on load cell 1, is acted on breaker spring pull rod 4 by load cell 1, passes through survey
The variation of 1 force value of force snesor judges whether breaker spring is working normally.
Embodiment 4
As shown in figure 5, the load cell 1 is to paste strain gauge on breaker spring pull rod 4 breaker spring pull rod 4
Breaker spring pull rod 4 is directly sticked strain ga(u)ge by the sensor made, such mounting means, is made of one formula open circuit
Whether 4 load cell 1 of device spring pull rod judges breaker spring 3 in normal work by the variation of 1 force value of load cell
Make.
The present invention whether normal trouble free service of method monitoring grid circuit breaker mechanism for surveying the variation of spring pressure.It is this
The method of spring stress state is reacted with force value, it can be solid according to different voltages grade, different institutions pattern, different springs
The spring mechanism of circuit breaker for determining mode, to design the load cell 1 being connect with spring mechanism, convenient for pacifying together with spring mechanism
Dress, the design of load cell 1 can meet the functional requirement of spring monitoring, by schematic diagram 6, it can be achieved that spring stress shape
State is regular or the function of long-term inspection acquisition, can also realize to the power state suffered by breaker mechanism spring（Including pulling force and pressure
Power）Carry out long term monitoring, and collected monitoring data analyzed, summarizes, evaluate, early warning and alarm, find in time because
The spring problem proposes operation opinion to the operation of breaker mechanism spring, is convenient for timely replacement problem spring, to avoid
The failure of breaker mechanism greatly improves the safety and reliability of operation of power networks.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of method of on-line monitoring high-voltage breaker mechanism spring force value, which is characterized in that include the following steps：
S1 measures the variation of combined floodgate breaker spring and the real-time force value of separating brake breaker spring using load cell in real time；
S2, the force value that spring is subject to when measuring breaker each splitting or integrating lock, and the force value suffered by spring is dispatched from the factory with spring producer
Preset value is compared, to judge whether spring is working normally, if pre-, alarm is not sent out in normal range (NR), to protect
Demonstrate,prove the normal trouble free service of grid circuit breaker mechanism；
The signal output end of S3, load cell are electrically connected with the signal input part of controller respectively, the letter of the controller
Number output end is electrically connected with alarm, power when load cell detection point/close a floodgate when spring works, and will point/combined floodgate bullet
The force value of spring is transmitted in control unit, and real-time detected value is compared with preset value, judge point/switching-in spring whether work
Make normally, if spring is in abnormal operating state, controller controls alarm work.
2. a kind of method of on-line monitoring high-voltage breaker mechanism spring force value according to claim 1, feature exist
In the load cell is installed in series on the pallet of breaker spring lower end.
3. a kind of method of on-line monitoring high-voltage breaker mechanism spring force value according to claim 1, feature exist
In the load cell is mounted on breaker spring upper end.
4. a kind of method of on-line monitoring high-voltage breaker mechanism spring force value according to claim 1, feature exist
In the load cell is mounted on breaker spring pull rod.
5. a kind of method of on-line monitoring high-voltage breaker mechanism spring force value according to claim 1, feature exist
In the load cell is the sensor pasted strain gauge on breaker spring pull rod and breaker spring pull rod is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810258421.2A CN108548623A (en) | 2018-03-27 | 2018-03-27 | A method of on-line monitoring high-voltage breaker mechanism spring force value |
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|---|---|---|---|
| CN201810258421.2A CN108548623A (en) | 2018-03-27 | 2018-03-27 | A method of on-line monitoring high-voltage breaker mechanism spring force value |
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| CN201810258421.2A Pending CN108548623A (en) | 2018-03-27 | 2018-03-27 | A method of on-line monitoring high-voltage breaker mechanism spring force value |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449060A (en) * | 2018-10-23 | 2019-03-08 | 高小龙 | A method of high-voltage breaker mechanism spring is monitored on-line with load cell |
| CN109520660A (en) * | 2018-12-29 | 2019-03-26 | 中航电测仪器股份有限公司 | A kind of power circuit breaker spring pressure monitoring device and monitoring method |
| CN110567640A (en) * | 2019-10-10 | 2019-12-13 | 国网河南省电力公司电力科学研究院 | Online calibrating device and method for circuit breaker pressure sensor |
| CN110752669A (en) * | 2019-10-29 | 2020-02-04 | 国网湖南省电力有限公司 | Circuit breaker energy storage spring abnormal state evaluation system |
| CN111487022A (en) * | 2020-04-27 | 2020-08-04 | 阜阳市光普照明科技有限公司 | Elasticity measurement equipment and method for contact spring |
| CN111896161A (en) * | 2020-08-05 | 2020-11-06 | 北京鼎翰建筑有限公司 | Method for monitoring spring elasticity value on line |
| CN111964854A (en) * | 2020-07-28 | 2020-11-20 | 北京建筑大学 | System and method for monitoring and evaluating service state of steel spring of floating slab track bed |
| CN112213049A (en) * | 2020-09-22 | 2021-01-12 | 天地（常州）自动化股份有限公司 | On-line monitoring device and monitoring method for air leakage and contact abrasion of vacuum tube of contactor |
| CN112431821A (en) * | 2020-11-11 | 2021-03-02 | 中国南方电网有限责任公司超高压输电公司昆明局 | Early warning device for hydraulic disc spring mechanism of high-voltage circuit breaker |
| CN114354166A (en) * | 2021-12-31 | 2022-04-15 | 国网山东省电力公司潍坊供电公司 | Intelligent high-voltage circuit breaker energy storage spring online monitoring method and system |
| CN114739562A (en) * | 2021-01-07 | 2022-07-12 | 配天机器人技术有限公司 | Nitrogen spring pressure monitoring system for industrial robot and industrial robot |
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|---|---|---|---|---|
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| CN111487022A (en) * | 2020-04-27 | 2020-08-04 | 阜阳市光普照明科技有限公司 | Elasticity measurement equipment and method for contact spring |
| CN111964854A (en) * | 2020-07-28 | 2020-11-20 | 北京建筑大学 | System and method for monitoring and evaluating service state of steel spring of floating slab track bed |
| CN111896161A (en) * | 2020-08-05 | 2020-11-06 | 北京鼎翰建筑有限公司 | Method for monitoring spring elasticity value on line |
| CN112213049A (en) * | 2020-09-22 | 2021-01-12 | 天地（常州）自动化股份有限公司 | On-line monitoring device and monitoring method for air leakage and contact abrasion of vacuum tube of contactor |
| CN112431821A (en) * | 2020-11-11 | 2021-03-02 | 中国南方电网有限责任公司超高压输电公司昆明局 | Early warning device for hydraulic disc spring mechanism of high-voltage circuit breaker |
| CN112431821B (en) * | 2020-11-11 | 2021-10-01 | 中国南方电网有限责任公司超高压输电公司昆明局 | Early warning device for hydraulic disc spring mechanism of high-voltage circuit breaker |
| CN114739562A (en) * | 2021-01-07 | 2022-07-12 | 配天机器人技术有限公司 | Nitrogen spring pressure monitoring system for industrial robot and industrial robot |
| CN114354166A (en) * | 2021-12-31 | 2022-04-15 | 国网山东省电力公司潍坊供电公司 | Intelligent high-voltage circuit breaker energy storage spring online monitoring method and system |
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