CN105510824A - Method and system for monitoring high-voltage circuit breaker operating mechanism - Google Patents
Method and system for monitoring high-voltage circuit breaker operating mechanism Download PDFInfo
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- CN105510824A CN105510824A CN201610058976.3A CN201610058976A CN105510824A CN 105510824 A CN105510824 A CN 105510824A CN 201610058976 A CN201610058976 A CN 201610058976A CN 105510824 A CN105510824 A CN 105510824A
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- stress
- operation mechanism
- breaker operation
- voltage breaker
- strain
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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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- 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
- G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
- G01L5/223—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to joystick controls
Abstract
The embodiment of the invention discloses a method and system for monitoring a high-voltage circuit breaker operating mechanism. By determining a stress detection point of the high-voltage circuit breaker operating mechanism and arranging a stress sensor according to the stress detection point, stress signals of the high-voltage circuit breaker operating mechanism are collected; since the stress detection point is a detection point which is judged through simulation analysis to be subject to failures very easily, stress signal colleting efficiency and precision are improved, and technicians can obtain a stress state of the high-voltage circuit breaker operating mechanism accurately conveniently. A remote monitoring and analysis system receives the stress signals having undergone calculation, amplification, filtering and digital-to-analog conversion and performs stress analysis and can timely learn about stress results of the operating mechanism and have a very high uptodate state, stress analysis is performed, health conditions of the operating mechanism are further mastered comprehensively and accurately, so as to be favorable for taking corresponding maintenance measures timely; therefore, electric power accidents are avoided, and the safety of an electric power system is guaranteed.
Description
Technical field
The present invention relates to electric machinery technical field, particularly relate to a kind of high-voltage breaker operation mechanism monitoring method and system.
Background technology
In electric system, isolating switch is most popular protection and control device in high-voltage electrical equipment, this and itself be inseparable without fire hazard, environmental protection, advantage that break performance is good.In recent years, because the breaker operation mechanism power grid accident caused that ruptures happens occasionally, the safe and stable operation of electrical network has been had a strong impact on.According to the breaker reliability enquiry data display that international conference on large HV electric systems provides, in the work accident of primary cut-out, that causes because of fault accounts for 64.8% of whole fault, wherein mechanical fault accounts for 55% of whole fault, and the operational reliability of the bright isolating switch of above-mentioned tables of data is the key affecting isolating switch global reliability always.
Primary cut-out generally comprises on-off element, operating mechanism, intermediate transmission mechanism, insulated support and pedestal etc., wherein said operating mechanism is the core component of primary cut-out, for realizing the combined floodgate of described primary cut-out and opening a sluice gate operation, the reliability of described operating mechanism determines the reliability of primary cut-out work to a great extent.At present, in order to ensure the normal operation of described operating mechanism, and then ensure the working stability of described primary cut-out, technician generally adopts the mode of regular visit, checks described actuating structure, to determine whether to wear and tear, aging etc.But, due to the distribution of described primary cut-out extensively, the mode of above-mentioned regular visit needs the manpower and materials of at substantial, the running status of the described operating mechanism that is difficult to upgrade in time, poor real; And the inspection of described operating mechanism needs the micro-judgment relying on technician, very accurately obtains the health status of described operating mechanism, poor accuracy.
Summary of the invention
A kind of high-voltage breaker operation mechanism monitoring method and system is provided, to solve the problem of high-voltage breaker operation mechanism of the prior art monitoring poor real and poor accuracy in the embodiment of the present invention.
In order to solve the problems of the technologies described above, the embodiment of the invention discloses following technical scheme:
The embodiment of the invention discloses a kind of high-voltage breaker operation mechanism monitoring method, comprise the following steps:
Determine the stress mornitoring point of high-voltage breaker operation mechanism;
According to described stress mornitoring point, strain gauge is arranged on described high-voltage breaker operation mechanism, gathers the stress signal on described high-voltage breaker operation mechanism;
Described stress signal carried out calculate, amplify, after filtering and digital-to-analog conversion, be sent to remote monitoring and analytic system, carry out stress analysis.
Preferably, the described stress mornitoring point determining high-voltage breaker operation mechanism, comprising:
Set up the part model of described high-voltage breaker operation mechanism, and described part model is assembled into high-voltage breaker operation mechanism model;
GTD model and model simplification are carried out to described high-voltage breaker operation mechanism model; Stress and strain model and material definition are carried out to described part model; According to constraint, load and solve control, calculate and obtain described high-voltage breaker operation mechanism stress analysis result, described stress analysis result is included in stress, the strain and displacement that described primary cut-out closes a floodgate and opens a sluice gate in process in each time step;
According to described stress analysis result, determine the stress mornitoring point of high-voltage breaker operation mechanism.
Preferably, the position that described stress mornitoring point comprises cams mounted shaft part on camshaft, joint is connected with drive link, spring wall built-up, on curved boom near the position of roller, trace middle part, transmission arm and joint connection position, connecting lever and axle connecting portion and fanning strip and axle connecting portion.
Preferably, described strain gauge to be arranged on described high-voltage breaker operation mechanism, to comprise:
The foil gauge of described strain gauge is connected with wire, and described wire is shielding line that is not exposed, ground connection;
Smear insulating gel in the periphery of described foil gauge and be fixedly installed on described high-voltage breaker operation mechanism after outer paving masking foil.
Preferably, when described primary cut-out closes a floodgate or open a sluice gate operation, the stress signal on described high-voltage breaker operation mechanism is gathered.
Preferably, described remote monitoring and analytic system, according to described stress signal, are carried out stress analysis, being comprised:
Described remote monitoring and analytic system show in real time according to described stress signal, real-time analysis and historical data analysis;
The stress value corresponding according to described stress mornitoring point, judges whether described stress value is greater than default stress threshold;
If described stress value is greater than described stress threshold, report to the police.
Preferably, according to the position of described stress mornitoring point, material properties and historical statistics result, corresponding described stress threshold is arranged respectively to described stress mornitoring point.
The embodiment of the invention also discloses a kind of high-voltage breaker operation mechanism monitoring system, comprise strain gauge group, acquisition system and remote monitoring and analytic system, wherein:
Described strain gauge group, comprises multiple foil gauge, and described foil gauge is arranged on the stress mornitoring point of described high-voltage breaker operation mechanism, and is connected with described acquisition system by wire;
Described acquisition system comprises:
Sampling and control module, for receiving the strain signal transmitted from described foil gauge, and carry out controlling of sampling according to sampling pattern;
Measurement module, for receiving the strain signal that described sampling and control module transmit, and calculates strain signal and amplifies process;
Filtration module, for receiving the strain signal filtering harmonic wave and noise that described measurement module transmits;
Analog-to-digital conversion module, for receiving strain signal that described filtration module transmits and carrying out analog to digital conversion;
Micro treatment module, for receiving the strain signal that described analog-to-digital conversion module transmits, and obtains strain data;
Wireless module, for receiving wireless signal from described remote monitoring and analytic system and input microprocessor, and receives steering order that described microprocessor module sends, described strain data is sent to remote monitoring and analytic system;
Described remote monitoring and analytic system comprise:
Wireless telecommunications system, for receiving the strain data from described acquisition system;
Display and analysis module, for showing described strain data, and analyze and historical data analysis described strain data;
Judge module, for according to described strain data, judges whether stress value is greater than stress threshold;
Alarm module, if be greater than described stress threshold for described stress value, reports to the police.
Preferably, described sampling and control module also comprise sample circuit and sampling control circuit, wherein:
Described sample circuit, is connected with described foil gauge, for receiving the strain signal transmitted from foil gauge;
Described sampling control circuit, is connected with described sample circuit, and for carrying out controlling of sampling according to sampling pattern, described sampling pattern comprises daily timing sampling, triggers sampling and artificial sample.
Preferably, described monitoring system also comprises stress mornitoring point determination module, for setting up the part model of described high-voltage breaker operation mechanism, and described part model is assembled into described high-voltage breaker operation mechanism model; GTD model and model simplification are carried out to described high-voltage breaker operation mechanism model; Stress and strain model and material definition are carried out to described part model; According to constraint, load and solve control, calculate and obtain described high-voltage breaker operation mechanism stress analysis result, described stress analysis result is included in stress, the strain and displacement that described primary cut-out closes a floodgate and opens a sluice gate in process in each time step; According to described stress analysis result, determine the stress mornitoring point of high-voltage breaker operation mechanism.
From above technical scheme, the high-voltage breaker operation mechanism monitoring method that the embodiment of the present invention provides and system, by determining the stress mornitoring point of high-voltage breaker operation mechanism, and strain gauge is set according to described stress mornitoring point, gather the stress signal of described high-voltage breaker operation mechanism, due to the check point very easily broken down that described stress mornitoring point is judged by sunykatuib analysis, thus effectively improve efficiency and the precision of stress signal collection, facilitate technician to obtain high-voltage breaker operation mechanism stress state accurately; Then, remote monitoring and analytic system receive the stress signal after calculating, amplification, filtering and digital-to-analog conversion and carry out stress analysis, the stress result of described operating mechanism can be known in time, there is very high Up-to-date state, make stress analysis simultaneously, grasp the health status of described operating mechanism further comprehensively and exactly, be conducive to taking correspondingly maintenance measure in time, thus avoid the generation of electric power accident.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, for those of ordinary skills, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The schematic flow sheet of a kind of high-voltage breaker operation mechanism monitoring method that Fig. 1 provides for the embodiment of the present invention;
The schematic flow sheet of a kind of high-voltage breaker operation mechanism stress mornitoring point defining method that Fig. 2 provides for the embodiment of the present invention;
The setting position schematic diagram of the stress mornitoring point that Fig. 3 provides for the embodiment of the present invention;
The schematic flow sheet of a kind of strain gauge installation method that Fig. 4 provides for the embodiment of the present invention;
The schematic flow sheet of a kind of stress analysis that Fig. 5 provides for the embodiment of the present invention;
The structural representation of a kind of high-voltage breaker operation mechanism monitoring system that Fig. 6 provides for the embodiment of the present invention.
Embodiment
Technical scheme in the present invention is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
Primary cut-out is topmost control, protected location in electric system, and direct relation the safe operation of electrical network.In specific works process, described primary cut-out, according to the operation needs of electrical network, a part of power circuit and equipment investment or out of service, can play control action; Faulty component can also excise fast when power circuit or device fails by described primary cut-out from electrical network, ensures the normal operation of no failure part in electrical network, thus plays a protective role.Primary cut-out and reliability of operation thereof are directly connected to safe operation and the power supply quality of whole electric system, therefore play a very important role in electric system.
High-voltage breaker operation mechanism is the important component part of primary cut-out, is to ensure one of primary cut-out combined floodgate and the critical component of opening a sluice gate normal running, and the quality of its performance directly has influence on the technical feature of primary cut-out.And from electric power system fault statistics, the accident caused due to described operating mechanism reason accounts for the ratio of total accident very greatly, therefore monitoring described operating mechanism is the important means ensureing that described primary cut-out normally runs.Described operating mechanism can be divided into hand-power operating mechanism, electromagnetic operating mechanism, spring operating mechanism, pneumatic actuating structure and hydraulic operating structure etc., and wherein spring operating mechanism is a kind of Application comparison actuating structure widely at present.Described spring operating mechanism critical component is for opening a sluice gate spring and switching-in spring, and in the course of the work, described switching-in spring stores mechanical energy at short notice, and then switching-in spring fault offset closes a floodgate; In making process, open a sluice gate spring and carry out energy storage, for switching-off action provides power.In embodiments of the present invention will using described spring operating mechanism as application, described high-voltage breaker operation mechanism monitoring method and system are described, certain described operating mechanism also can be understood as the operating mechanism of other types, such as hydraulic actuating mechanism or pneumatic operating mechanism etc.
See Fig. 1, be the schematic flow sheet of a kind of high-voltage breaker operation mechanism monitoring method that the embodiment of the present invention provides, described monitoring method comprises the following steps:
Step S101: the stress mornitoring point determining high-voltage breaker operation mechanism.
In order to accurately and obtain the health status of high-voltage breaker operation mechanism all sidedly, need the stress signal gathering described operating mechanism, and the position of identified sign check point is the key ensureing described stress signal acquisition quality and efficiency.In embodiments of the present invention, be illustrated in figure 2 the schematic flow sheet of a kind of high-voltage breaker operation mechanism stress mornitoring point defining method that the embodiment of the present invention provides, described stress mornitoring point defining method comprises the following steps:
Step S1011: the part model setting up described high-voltage breaker operation mechanism, and described part model is assembled into high-voltage breaker operation mechanism model.
In embodiments of the present invention, three-dimensional model design software Pro/E is utilized to carry out modeling, the basic functions such as the stretching of Pro/E, rotation and withdrawing pattern are used to set up the part model of described high-voltage breaker operation mechanism one by one, finally each part model is assembled, complete the foundation of described high-voltage breaker operation mechanism model.
Step S1012: GTD model and model simplification are carried out to described high-voltage breaker operation mechanism model; Stress and strain model and material definition are carried out to described part model; According to constraint, load and solve control, calculate and obtain described high-voltage breaker operation mechanism stress analysis result, described stress analysis result is included in stress, the strain and displacement that described primary cut-out closes a floodgate and opens a sluice gate in process in each time step.
According to the result of above-mentioned steps S1011, state high-voltage breaker operation mechanism model described in being set up by Pro/E import HyperMesh and carry out GTD model and model simplification, then to each part model grid division, definition isolating switch part material therefor, again constraint, load added to described part model and solve control, finally in LS-DYNA, solve stress analysis, the result of calculation such as stress, strain, displacement of obtain stress analysis result, described stress analysis result comprises the whole combined floodgate of described primary cut-out, opening a sluice gate in process in each time step.Those skilled in the art can check in HyperGraph specify the moment, specify the stress distribution of part, the distribution of contact etc. at strained situation, contact situation and contact point place.
Step S1013: according to described stress analysis result, determines the stress mornitoring point of high-voltage breaker operation mechanism.
According to the stress analysis result obtained in step S1012, judge that the position of ess-strain easily occurs described high-voltage breaker operation mechanism, such as those skilled in the art can according to stress distribution in described part model, the position selecting stress distribution the most intensive is as described stress mornitoring point, can certainly, according to the size of stress or strain, select corresponding position as described stress mornitoring point.In embodiments of the present invention, determine 8 more dangerous points as described stress mornitoring point, particularly, see referring to Fig. 3, for the setting position schematic diagram of the stress mornitoring point that the embodiment of the present invention provides, described stress mornitoring point is respectively: near the position 44 of roller, trace middle part 45, transmission arm and joint connection position 46, connecting lever and axle connecting portion 47, fanning strip and axle connecting portion 48 on the position 42 that on camshaft, cams mounted shaft part 41, joint are connected with drive link, spring wall built-up 43, curved boom.Certainly, in the specific implementation, those skilled in the art according to the structure of actual operating mechanism, can determine corresponding stress mornitoring point by said process, and described stress mornitoring point can be any number of and be not limited to above-mentioned position.
Step S102: according to described stress mornitoring point, strain gauge is arranged on described high-voltage breaker operation mechanism, gathers the stress signal on described high-voltage breaker operation mechanism.
After determining described stress mornitoring point, strain gauge is arranged on high-voltage breaker operation mechanism corresponding to described stress mornitoring point, the described strain gauge wire that comprises foil gauge and be connected with described foil gauge in embodiments of the present invention, for gathering the stress signal of described stress mornitoring point correspondence position on described high-voltage breaker operation mechanism.Because described high-voltage breaker operation mechanism is positioned at transformer station, environment in transformer station is strong electromagnetic radiation environment, in order to reduce electromagnetic interference (EMI), improve the accuracy that stress signal gathers, the embodiment of the present invention has carried out electromagnetism interference setting to described strain gauge.Particularly, see Fig. 4, be the schematic flow sheet of a kind of strain gauge installation method that the embodiment of the present invention provides, described installation method comprises the following steps:
Step S1021: the foil gauge of described strain gauge is connected with wire, and described wire is shielding line that is not exposed, ground connection.
Described foil gauge is used for pasting described stress mornitoring point position, and described wire and described foil gauge are interconnected, for transmitting the stress signal that described foil gauge collects.In order to improve anti-electromagnetic interference capability, described wire adopts shielding line, and in the specific implementation, notes the exposed degree of foil gauge solder joint place wire, avoid exposed, and the shielding line of measuring point end wire must be connected reliably with nearest ground simultaneously.
Step S1022: smear insulating gel in the periphery of described foil gauge and be fixedly installed on described high-voltage breaker operation mechanism after outer paving masking foil.
Described foil gauge, when pasting, is guaranteeing that stickup carries out electromagnetic screen protection to described foil gauge reliably simultaneously.Particularly, be coated with insulating gel protection in the periphery of described foil gauge, and spread masking foil outward, be finally fixedly installed on described high-voltage breaker operation mechanism.
In the specific implementation, high-voltage breaker operation mechanism most times is in idle state, only have and close a floodgate and the just meeting action of described operating mechanism when opening a sluice gate, and combined floodgate and the number of times of opening a sluice gate probably only have tens times for 1 year, therefore in order to improve stress signal sampling efficiency, preferably, when described primary cut-out closes a floodgate or open a sluice gate operation, gather the stress signal on described high-voltage breaker operation mechanism, namely trigger sampling.Particularly, described triggering sampling refers to when primary cut-out is opened a sluice gate or close a floodgate time, described operating mechanism open a sluice gate or closing coil obtains electric, and using this as trigger pip, triggering collection system is sampled, preferably, sample frequency 1-5KHz, sampling time 1-2 minute because the time of isolating switch switching be generally a few tens of milliseconds, therefore adopt high-frequency sampling.Certainly, according to actual samples demand, other stress signal sampling patterns also can be adopted, such as daily timing sampling and artificial sample etc.Such as daily timing sampling, acquisition system is preserved regular self-timing according to the sample frequency given tacit consent to, sampling time and data and is gathered stress signal, preferably, the time interval of daily timing sampling is 1-2 hour, and time and the sample frequency of each sampling can be set by staff; Equally, for artificial sample, technician can specify new sample frequency, sampling time and storage rule, carries out temporary sample at any time.
In addition, in described stress signal gatherer process, owing to needing the data of the operating mechanism gathered more, block up in order to avoid mass data and cause system crash, in embodiments of the present invention, technician, except arranging different sampling patterns by the way, can also arrange sample priority strategy.Particularly, such as the stress mornitoring point determined in step S101, add up according to physical fault, the priority of each stress mornitoring point can be set, if such as spring wall built-up stress mornitoring point position failure rate is the highest, fanning strip and axle connecting portion stress mornitoring point failure rate lower, trace middle part stress mornitoring point failure rate is minimum, and can arrange described priority is accordingly spring wall built-up > fanning strip and axle connecting portion > trace middle part; According to described priority, the stress signal of preferential collection spring wall built-up stress mornitoring point.
Step S103: described stress signal carried out calculate, amplify, after filtering and digital-to-analog conversion, be sent to remote monitoring and analytic system, carry out stress analysis.
By the stress signal that step S102 collects, then carry out calculating and amplifying process, then by the harmonic wave in filtering process filtering stress signal and noise, become digital signal finally by digital-to-analog conversion, be sent to remote monitoring and analytic system, described remote monitoring and analytic system carry out stress analysis according to the described stress signal obtained, particularly, see Fig. 5, be the schematic flow sheet of a kind of stress analysis that the embodiment of the present invention provides, comprise the following steps:
Step S1031: to show in real time according to described stress signal, real-time analysis and historical data analysis.
The stress signal received shows by described remote monitoring and analytic system in real time, analyzes for technician, in embodiments of the present invention, does not limit display mode, such as, can represent with the form of chart, waveform or 3 dimensional drawing; According to described stress signal, the stress value of real-time analysis stress mornitoring point corresponding position, displacement and strain etc.; Simultaneously, in order to carry out combined stress analysis to described operating mechanism, in embodiments of the present invention, also the stress data of different test duration node is gathered, technician is facilitated to carry out historical data analysis, such as can draw the time domain stress curve, displacement curve etc. of described stress mornitoring point according to historical data, technician can be judged the stress trend of described operating mechanism.
Step S1032: the stress value corresponding according to described stress mornitoring point, judges whether described stress value is greater than default stress threshold.
In the invention process, technician by the contrast stress value of each stress mornitoring point and the size of stress threshold, can judge whether described stress mornitoring point correspondence position has the risk broken down.Described stress threshold, the stress threshold that can preset according to actual monitoring experience and test statistics for technician, and stress threshold corresponding to each stress mornitoring point can be the same or different, preferably, technician according to the position of described stress mornitoring point, material properties and historical statistics result, can arrange corresponding stress threshold to described stress mornitoring point respectively.In the specific implementation, if the material of cams mounted shaft part 41 stress mornitoring point correspondence position has very strong rigidity and stress tolerance on such as camshaft, then it is higher that the stress threshold that on described camshaft, cams mounted shaft part 41 stress mornitoring point is corresponding can be set; And the stress tolerance of the position 44 stress mornitoring point correspondence position of close roller is lower on curved boom, the stress less according to historical statistics rule easily causes the damage of above-mentioned position, then to arrange on described curved boom lower etc. near the stress threshold of position 44 stress mornitoring point of roller.
And, according to the monitoring requirements of reality, corresponding each described stress mornitoring point can arrange multiple stress threshold, such as the first stress threshold can be set, second stress threshold and tertiary stress threshold value etc., particularly, the position 42 stress mornitoring point be such as connected with drive link for joint can arrange above-mentioned 3 stress thresholds, first stress threshold < second stress threshold < tertiary stress threshold value, if monitor the stress value obtained to be less than or equal to described first stress threshold, then can judge that above-mentioned stress mornitoring point correspondence position is in safe stress interval, if monitor the stress value obtained to be greater than described first stress threshold, to be less than or equal to described second stress threshold, then can judge that above-mentioned stress mornitoring point correspondence position is in safe stress Risk interval, there is certain damage risk, need the attention causing technician, but may also not reach the degree processed immediately, if monitor the stress value obtained to be greater than described tertiary stress threshold value, then can judge that above-mentioned stress mornitoring point correspondence position is between alert zone, the probability be damaged is high, needs to process immediately.By arranging multiple described stress threshold, technician can arrange corresponding monitoring policy, thus conveniently safeguards process accordingly.
Step S1033: if described stress value is greater than described stress threshold, report to the police.
If described stress value is greater than described stress threshold, then corresponding stress mornitoring point position may be damaged accident, takes corresponding service action by the mode notification technique personnel reported to the police.In embodiments of the present invention, not limiting the concrete mode of reporting to the police, such as, can be pop-up window or by the warning message of email, short message sending and the warning message etc. that highlights at stress mornitoring point statistical window.And, according to the multiple stress thresholds arranged in step S1032, described warning can be the warning of different stage, if such as described stress value is greater than described first stress threshold, is less than or equal to described second stress threshold, then carry out early warning and alarming, notification technique personnel note; If described stress value is greater than described tertiary stress threshold value, then carry out emergency alarm, notification technique personnel note and need take immediate steps.
As seen from the above-described embodiment, the high-voltage breaker operation mechanism monitoring method that the invention process provides, by determining the stress mornitoring point of high-voltage breaker operation mechanism, and strain gauge is set according to described stress mornitoring point, gather the stress signal of described high-voltage breaker operation mechanism, due to the check point very easily broken down that described stress mornitoring point is judged by sunykatuib analysis, thus effectively improve efficiency and the precision of stress signal collection, facilitate technician to obtain high-voltage breaker operation mechanism stress state accurately; Then, remote monitoring and analytic system receive the stress signal after calculating, amplification, filtering and digital-to-analog conversion and carry out stress analysis, the stress result of described operating mechanism can be known in time, there is very high Up-to-date state, make stress analysis simultaneously, grasp the health status of described operating mechanism further comprehensively and exactly, be conducive to taking correspondingly maintenance measure in time, thus avoid the generation of electric power accident.
By the description of above embodiment of the method, those skilled in the art can be well understood to the mode that the present invention can add required general hardware platform by software and realize, hardware can certainly be passed through, but in a lot of situation, the former is better embodiment.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: ROM (read-only memory) (ROM), random access memory (RAM), magnetic disc or CD etc. various can be program code stored medium.
Corresponding with high-voltage breaker operation mechanism monitoring method embodiment provided by the invention, present invention also offers a kind of high-voltage breaker operation mechanism monitoring system, see Fig. 6, for the structural representation of a kind of high-voltage breaker operation mechanism monitoring system that the embodiment of the present invention provides, described monitoring system comprises strain gauge group 1, acquisition system 2 and remote monitoring and analytic system 3, wherein:
Described strain gauge group 1 comprises multiple foil gauge 11, and described foil gauge 11 is arranged on the stress mornitoring point of described high-voltage breaker operation mechanism, and is connected with described acquisition system by wire; Described stress mornitoring point comprises position 42 that on camshaft, cams mounted shaft part 41, joint are connected with drive link, spring wall built-up 43, near the position 44 of roller, trace middle part 45, transmission arm and joint connection position 46, connecting lever and axle connecting portion 47 and fanning strip and axle connecting portion 48 on curved boom; Because described strain gauge group 1 is positioned at transformer station, be in strong electromagnetic radiation environment, therefore take electromagnetic screen series of measures to reduce the impact of electromagnetic interference (EMI), specifically have: foil gauge 11 is when pasting, guaranteeing that stickup carries out electromagnetic screen protection to it reliably simultaneously, outside after foil gauge 11 is coated with insulating gel protection, spreading masking foil; Foil gauge 11 connects wire and adopts shielding line, and notices that foil gauge 11 pastes the exposed degree of wire everywhere, and the shielding line of measuring point end wire must be connected with nearest ground reliably;
The stress signal that described acquisition system 2 transmits for receiving strain gauge group 1, acquisition system 2 specifically comprises sampling and forms 26 with control module 21, measurement module 22, filtration module 23, analog-to-digital conversion module 24, micro treatment module 25 and wireless module, wherein:
Described sampling and control module 21, for receiving the strain signal transmitted from described foil gauge 11, and carry out controlling of sampling according to sampling pattern, described sampling and control module 21 can realize the sampling of different mode, comprise daily timing sampling, trigger sampling and artificial sample, described daily timing sampling can be understood as preserves regular self-timing collection according to the sample frequency given tacit consent to, sampling time and data, preferably, the time interval of timing sampling is 1-2 hour, and time and the sample frequency of each sampling can be set by staff, because high-voltage breaker operation mechanism most times is in idle state, only have and close a floodgate and the just meeting action of operating mechanism when opening a sluice gate, and combined floodgate and the number of times of opening a sluice gate probably only have tens times for 1 year, therefore can select and trigger sampling, described triggering sampling can be understood as when primary cut-out is opened a sluice gate or close a floodgate time, operating mechanism open a sluice gate or closing coil obtains electric, and using this as trigger pip, triggering collection system is sampled, preferably, sample frequency 1-5KHz, sampling time 1-2 minute, because the time of isolating switch switching is generally a few tens of milliseconds, therefore adopt high-frequency sampling, described artificial sample can be understood as the temporary sample that staff specifies new sample frequency, sampling time and storage rule to carry out at any time,
Described measurement module 22, the stress signal transmitted for receiving sampling and control module 21 carries out calculating and amplifying process;
Described filtration module 23, for receiving the strain signal filtering harmonic wave and noise that described measurement module 22 transmits;
Described analog-to-digital conversion module 24, for receiving strain signal that described filtration module 22 transmits and carrying out analog to digital conversion;
Described micro treatment module 25, for receiving the strain signal that described analog-to-digital conversion module 24 transmits, and obtains strain data;
Described wireless module 26, for receiving wireless signal from described remote monitoring and analytic system 3 and input microprocessor, and receives steering order that described microprocessor module 25 sends, described strain data is sent to remote monitoring and analytic system 3;
Described remote monitoring and analytic system 3 comprise:
Wireless telecommunications system 31, for receiving the strain data from described acquisition system 2;
Display and analysis module 32, for showing described strain data, and analyze and historical data analysis described strain data;
Judge module 33, for according to described strain data, judges whether stress value is greater than stress threshold; Described stress threshold, the stress threshold that can preset according to actual monitoring experience and test statistics for technician, and stress threshold corresponding to each stress mornitoring point can be the same or different, preferably, technician according to the position of described stress mornitoring point, material properties and historical statistics result, can arrange corresponding stress threshold to described stress mornitoring point respectively; And corresponding each described stress mornitoring point can arrange multiple stress threshold, thus judges between the stressed zone that described stress value is in;
Alarm module 34, if be greater than described stress threshold for described stress value, reports to the police; And for multiple stress threshold, described warning can be the warning of different stage, if such as described stress value is greater than described first stress threshold, is less than or equal to described second stress threshold, then carry out early warning and alarming, notification technique personnel note; If described stress value is greater than described tertiary stress threshold value, then carry out emergency alarm, notification technique personnel note and need take immediate steps.
In embodiments of the present invention, described acquisition system 2 has stronger anti-electromagnetic interference capability, has taken into full account electromagnetism interference technology when the wiring board design of acquisition system 2 and making.The route of transmission that concrete measure comprises and suppresses interference source, eliminate interference, reduce Sensitive Apparatus the pickup of noise, components and parts rational deployment, reasonable Arrangement signal wire are reduced to coupling between signal wire, note grounding measures etc.
Preferably, described sampling and control module 21 comprise sample circuit and sampling control circuit; Described sample circuit, is connected with described foil gauge, for receiving the strain signal transmitted from foil gauge; Described sampling control circuit, is connected with described sample circuit, and for carrying out controlling of sampling according to sampling pattern, described sampling pattern comprises daily timing sampling, triggers sampling and artificial sample.
Preferably, described high-voltage breaker operation mechanism monitoring system also comprises stress mornitoring point determination module, for setting up the part model of described high-voltage breaker operation mechanism, and described part model is assembled into high-voltage breaker operation mechanism model; GTD model and model simplification are carried out to described high-voltage breaker operation mechanism model; Stress and strain model and material definition are carried out to described part model; According to constraint, load and solve control, calculate and obtain described high-voltage breaker operation mechanism stress analysis result, described stress analysis result is included in stress, the strain and displacement that described primary cut-out closes a floodgate and opens a sluice gate in process in each time step; According to described stress analysis result, determine the stress mornitoring point of high-voltage breaker operation mechanism.
Preferably, described wireless telecommunications system 31 is the wireless telecommunications system based on WIFI and wireless aps, described wireless module 26 is also the wireless module based on WIFI and wireless aps, described remote monitoring and analytic system 3 are positioned at the main Control Room of transformer station, carry out both-way communication by described wireless telecommunications system 31 with described acquisition system 2.And the operation such as described remote monitoring and analytic system 3 can also carry out channel setting, communication setting, storage rule are arranged, report output, and control described acquisition system 2 and select different sampling patterns and the parameter such as sample frequency, sampling time is set.
Preferably, described acquisition system 2, except arranging different sampling patterns by the way, can also arrange sample priority strategy.Particularly, such as stress mornitoring point, add up according to physical fault, the priority of each stress mornitoring point can be set, if such as spring wall built-up stress mornitoring point position failure rate is the highest, fanning strip and axle connecting portion stress mornitoring point failure rate lower, trace middle part stress mornitoring point failure rate is minimum, and can arrange described priority is accordingly spring wall built-up > fanning strip and axle connecting portion > trace middle part; According to described priority, the stress signal of preferential collection spring wall built-up stress mornitoring point.
For convenience of description, various unit is divided into describe respectively with function when describing above device.Certainly, the function of each unit can be realized in same or multiple software and/or hardware when implementing of the present invention.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.Especially, for device or system embodiment, because it is substantially similar to embodiment of the method, so describe fairly simple, relevant part illustrates see the part of embodiment of the method.Apparatus and system embodiment described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of module wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
The above is only the specific embodiment of the present invention, those skilled in the art is understood or realizes the present invention.To be apparent to one skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a high-voltage breaker operation mechanism monitoring method, is characterized in that, comprises the following steps:
Determine the stress mornitoring point of high-voltage breaker operation mechanism;
According to described stress mornitoring point, strain gauge is arranged on described high-voltage breaker operation mechanism, gathers the stress signal on described high-voltage breaker operation mechanism;
Described stress signal carried out calculate, amplify, after filtering and digital-to-analog conversion, be sent to remote monitoring and analytic system, carry out stress analysis.
2. high-voltage breaker operation mechanism monitoring method according to claim 1, is characterized in that, the described stress mornitoring point determining high-voltage breaker operation mechanism, comprising:
Set up the part model of described high-voltage breaker operation mechanism, and described part model is assembled into high-voltage breaker operation mechanism model;
GTD model and model simplification are carried out to described high-voltage breaker operation mechanism model; Stress and strain model and material definition are carried out to described part model; According to constraint, load and solve control, calculate and obtain described high-voltage breaker operation mechanism stress analysis result, described stress analysis result is included in stress, the strain and displacement that described primary cut-out closes a floodgate and opens a sluice gate in process in each time step;
According to described stress analysis result, determine the stress mornitoring point of high-voltage breaker operation mechanism.
3. high-voltage breaker operation mechanism monitoring method according to claim 1 and 2, it is characterized in that, the position that described stress mornitoring point comprises cams mounted shaft part on camshaft, joint is connected with drive link, spring wall built-up, on curved boom near the position of roller, trace middle part, transmission arm and joint connection position, connecting lever and axle connecting portion and fanning strip and axle connecting portion.
4. high-voltage breaker operation mechanism monitoring method according to claim 1, is characterized in that, is describedly arranged on described high-voltage breaker operation mechanism by strain gauge, comprising:
The foil gauge of described strain gauge is connected with wire, and described wire is shielding line that is not exposed, ground connection;
Smear insulating gel in the periphery of described foil gauge and be fixedly installed on described high-voltage breaker operation mechanism after outer paving masking foil.
5. high-voltage breaker operation mechanism monitoring method according to claim 1, is characterized in that, when described primary cut-out closes a floodgate or open a sluice gate operation, gathers the stress signal on described high-voltage breaker operation mechanism.
6. high-voltage breaker operation mechanism monitoring method according to claim 1, is characterized in that, described remote monitoring and analytic system, according to described stress signal, are carried out stress analysis, being comprised:
Described remote monitoring and analytic system show in real time according to described stress signal, real-time analysis and historical data analysis;
The stress value corresponding according to described stress mornitoring point, judges whether described stress value is greater than default stress threshold;
If described stress value is greater than described stress threshold, report to the police.
7. high-voltage breaker operation mechanism monitoring method according to claim 6, is characterized in that, according to the position of described stress mornitoring point, material properties and historical statistics result, arranges corresponding described stress threshold respectively to described stress mornitoring point.
8. a high-voltage breaker operation mechanism monitoring system, is characterized in that, comprises strain gauge group, acquisition system and remote monitoring and analytic system, wherein:
Described strain gauge group, comprises multiple foil gauge, and described foil gauge is arranged on the stress mornitoring point of described high-voltage breaker operation mechanism, and is connected with described acquisition system by wire;
Described acquisition system comprises:
Sampling and control module, for receiving the strain signal transmitted from described foil gauge, and carry out controlling of sampling according to sampling pattern;
Measurement module, for receiving the strain signal that described sampling and control module transmit, and calculates strain signal and amplifies process;
Filtration module, for receiving the strain signal filtering harmonic wave and noise that described measurement module transmits;
Analog-to-digital conversion module, for receiving strain signal that described filtration module transmits and carrying out analog to digital conversion;
Micro treatment module, for receiving the strain signal that described analog-to-digital conversion module transmits, and obtains strain data;
Wireless module, for receiving wireless signal from described remote monitoring and analytic system and input microprocessor, and receives steering order that described microprocessor module sends, described strain data is sent to remote monitoring and analytic system;
Described remote monitoring and analytic system comprise:
Wireless telecommunications system, for receiving the strain data from described acquisition system;
Display and analysis module, for showing described strain data, and analyze and historical data analysis described strain data;
Judge module, for according to described strain data, judges whether stress value is greater than stress threshold;
Alarm module, if be greater than described stress threshold for described stress value, reports to the police.
9. high-voltage breaker operation mechanism monitoring system according to claim 8, is characterized in that, described sampling and control module also comprise sample circuit and sampling control circuit, wherein:
Described sample circuit, is connected with described foil gauge, for receiving the strain signal transmitted from foil gauge;
Described sampling control circuit, is connected with described sample circuit, and for carrying out controlling of sampling according to sampling pattern, described sampling pattern comprises daily timing sampling, triggers sampling and artificial sample.
10. high-voltage breaker operation mechanism monitoring system according to claim 8, it is characterized in that, also comprising stress mornitoring point determination module, for setting up the part model of described high-voltage breaker operation mechanism, and described part model being assembled into described high-voltage breaker operation mechanism model; GTD model and model simplification are carried out to described high-voltage breaker operation mechanism model; Stress and strain model and material definition are carried out to described part model; According to constraint, load and solve control, calculate and obtain described high-voltage breaker operation mechanism stress analysis result, described stress analysis result is included in stress, the strain and displacement that described primary cut-out closes a floodgate and opens a sluice gate in process in each time step; According to described stress analysis result, determine the stress mornitoring point of high-voltage breaker operation mechanism.
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