CN114264952A - Circuit breaker running state feature management system based on data processing - Google Patents
Circuit breaker running state feature management system based on data processing Download PDFInfo
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Abstract
The invention discloses a circuit breaker running state feature management system based on data processing, which relates to the technical field of circuit breaker running management and solves the technical problems that the prevention investment cost is too high and the repair blindness is large before the circuit breaker fails in the prior art; the circuit breaker is monitored through characteristic acquisition and analysis, whether the operating state of the circuit breaker is normal or not is judged in advance according to the characteristics of different operating states, the working efficiency of the circuit breaker is improved, meanwhile, the circuit breaker is controlled in real time through pre-control, the circuit breaker is subjected to parameter adjustment in advance, adjustment can be performed before a fault occurs, the fault is avoided, and meanwhile, the investment cost of monitoring and adjusting is controlled before the fault occurs.
Description
Technical Field
The invention relates to the technical field of circuit breaker operation management, in particular to a circuit breaker operation state feature management system based on data processing.
Background
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition for a predetermined time. The circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to the application range, the high-voltage and low-voltage boundary lines are relatively vague, and the circuit breakers above 3kV are generally called high-voltage electric appliances. The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, and automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, and the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like. Furthermore, no parts need to be changed after breaking the fault current. At present, it has been widely used.
However, in the prior art, the prevention investment cost before the breaker fails is too high, the repair blindness is relatively large, new trouble is easily caused after the breaker fails, and the reliability of the equipment is reduced to some extent; failure prediction cannot be accurately performed, and in addition, in the operating state characteristic management of the circuit breaker, different characteristic collection cannot be performed through a plurality of operating states, resulting in low efficiency of the characteristic management of the circuit breaker.
In view of the above technical drawbacks, a solution is proposed.
Disclosure of Invention
The invention aims to solve the problems, and provides a circuit breaker operation state characteristic management system based on data processing, which manages the operation state characteristics of a circuit breaker, monitors the operation state of the circuit breaker according to the real-time operation state characteristics and preprocesses faults, can effectively improve the operation efficiency of the circuit breaker and reduce the fault rate, enables enterprises to optimize industrial structures, reduces expenditure, saves energy, reduces the operation cost of the enterprises, promotes the health, harmony and sustainable development of the enterprises, and provides powerful support for the long-term operation of the enterprises; the circuit breaker is monitored through characteristic acquisition and analysis, whether the operating state of the circuit breaker is normal or not is judged in advance according to the characteristics of different operating states, the working efficiency of the circuit breaker is improved, meanwhile, the circuit breaker is controlled in real time through pre-control, the circuit breaker is subjected to parameter adjustment in advance, adjustment can be performed before a fault occurs, the fault is avoided, and meanwhile, the investment cost of monitoring and adjusting is controlled before the fault occurs.
The purpose of the invention can be realized by the following technical scheme:
a circuit breaker running state feature management system based on data processing comprises a feature management platform, wherein a current rapid monitoring unit, a server, a steady-state analysis unit, a transient analysis unit, a feature acquisition and analysis unit and a pre-control unit are arranged in the feature management platform;
the characteristic management platform generates a current rapid monitoring signal and sends the current rapid monitoring signal to a current rapid monitoring unit, and the current rapid monitoring unit monitors the current of the circuit breaker in the operation process; the circuit breaker in the steady-state time period is subjected to state monitoring through the steady-state analysis unit, the operation state of the circuit breaker in the steady-state operation is judged, the circuit breaker in the transient-state time period is subjected to state monitoring through the transient-state analysis unit, and the operation state of the transient-state operation of the circuit breaker is judged; performing characteristic acquisition analysis on the circuit breaker according to the signal type through a characteristic acquisition analysis unit; monitoring and controlling the running circuit breaker through a pre-control unit;
as a preferred embodiment of the present invention, the current rapid monitoring process of the current rapid monitoring unit is as follows:
setting a current monitoring time period, wherein the starting time of the current monitoring time period is the operating time of the circuit breaker, dividing the current monitoring time period into i sub-time points, wherein i is a natural number greater than 1, monitoring the circuit breaker of the current monitoring time period, acquiring corresponding current amplitudes of each sub-time point in the current monitoring time period to obtain corresponding current wave band lengths of current filtering, and respectively marking the corresponding current amplitudes of each sub-time point in the current monitoring time period to FZi and BDi according to the corresponding current wave band lengths of the current filtering; collecting the current collection period of each sub-time point in the current monitoring time period, and marking the current collection period of each sub-time point in the current monitoring time period as DZi; the current rapid monitoring coefficient Xi of each sub time point in the current monitoring time period is obtained through analysis, and the current rapid monitoring coefficient of each sub time point in the current monitoring time period is compared with a current rapid monitoring coefficient threshold value:
if the current rapid monitoring coefficient of the sub-time point in the current monitoring time period exceeds the current rapid monitoring coefficient threshold, marking the corresponding sub-time point as a qualified time point, generating a current monitoring qualified signal and sending the current monitoring qualified signal and the corresponding qualified time point to a server; and if the current rapid monitoring coefficient of the sub-time point in the current monitoring time period does not exceed the current rapid monitoring coefficient threshold, marking the corresponding sub-time point as an unqualified time point, generating an unqualified current monitoring signal and sending the unqualified current monitoring signal and the corresponding unqualified time point to the server.
As a preferred embodiment of the present invention, the steady-state analysis process of the steady-state analysis unit is as follows:
acquiring a temperature value and a corresponding temperature change speed of an auxiliary commutation switch in the circuit breaker in a steady-state time period, and respectively marking the temperature value and the corresponding temperature change speed of the auxiliary commutation switch in the circuit breaker in the steady-state time period as WDZ and WBV; acquiring an average temperature floating value of the components in the circuit breaker in a steady-state time period, and marking the average temperature floating value of the components in the circuit breaker in the steady-state time period as WFD; obtaining an analysis coefficient C of the circuit breaker in the steady state operation through analysis, and comparing the analysis coefficient C of the circuit breaker in the steady state operation with a threshold range of the steady state analysis coefficient:
if the analysis coefficient C of the circuit breaker in the steady-state operation is within the threshold range of the steady-state analysis coefficient, judging that the analysis of the corresponding circuit breaker in the steady-state operation is qualified, generating a qualified signal of the steady-state operation and sending the qualified signal of the steady-state operation to a feature acquisition and analysis unit; and if the analysis coefficient C of the circuit breaker in the steady-state operation is not in the threshold range of the steady-state analysis coefficient, judging that the analysis of the corresponding circuit breaker in the steady-state operation is unqualified, generating an unqualified signal of the steady-state operation, and sending the unqualified signal of the steady-state operation to the characteristic acquisition and analysis unit.
As a preferred embodiment of the present invention, the transient analysis process of the transient analysis unit is as follows:
the maximum circulating voltage difference value of the internal components of the circuit breaker in the transient time period and the maximum circulating current difference value of each branch circuit in the circuit breaker are collected, and the maximum circulating voltage difference value of the internal components of the circuit breaker in the transient time period and the maximum circulating current difference value of each branch circuit in the circuit breaker are respectively compared with a voltage difference value threshold value and a current difference value threshold value:
if the maximum circulating voltage difference value of the internal components of the circuit breaker in the transient time period exceeds a voltage difference value threshold value, or the maximum circulating current difference value of each branch in the circuit breaker exceeds a current difference value threshold value, judging that the transient operation analysis of the corresponding circuit breaker is unqualified, generating a transient operation analysis unqualified signal and sending the transient operation analysis unqualified signal to a feature acquisition and analysis unit; and if the maximum circulating voltage difference value of the internal components of the circuit breaker does not exceed the voltage difference value threshold value in the transient time period and the maximum circulating current difference value of each branch circuit in the circuit breaker does not exceed the current difference value threshold value, judging that the transient operation analysis of the corresponding circuit breaker is qualified, generating a transient operation analysis qualified signal and sending the transient operation analysis qualified signal to the feature acquisition and analysis unit.
As a preferred embodiment of the present invention, the characteristic collection and analysis unit uses the temperature as a steady-state characteristic parameter of the circuit breaker, collects the average temperature of each component in the steady-state time period corresponding to the steady-state operation qualified signal, marks the average temperature as a qualified steady-state characteristic, collects the minimum temperature of each component in the steady-state time period corresponding to the steady-state operation unqualified signal, and marks the minimum temperature as an unqualified steady-state characteristic;
taking the voltage and the current as transient characteristic parameters of the circuit breaker, collecting the lowest voltage amplitude and the lowest current amplitude of the circuit breaker in a transient time period corresponding to the unqualified transient operation analysis signal, marking the lowest voltage amplitude and the lowest current amplitude as unqualified transient characteristics, collecting the average voltage and the average current of the circuit breaker in the transient time period corresponding to the unqualified transient operation analysis signal, and marking the average voltage and the average current as qualified transient characteristics; and sending the qualified steady-state feature, the unqualified steady-state feature, the qualified transient-state feature and the unqualified transient-state feature to the pre-control unit together.
As a preferred embodiment of the present invention, the pre-control process of the pre-control unit is as follows:
when the circuit breaker is in steady-state operation, comparing the average temperature of components in the circuit breaker with qualified steady-state characteristics, and if the variation speed of the corresponding difference value of the average temperature and the qualified steady-state characteristics does not exceed a corresponding threshold value, judging that the current circuit breaker is qualified in steady-state operation and not performing any control; if the variation speed of the corresponding difference value of the average temperature and the qualified steady-state characteristic exceeds the corresponding threshold value, comparing the lowest temperature of the corresponding components in the circuit breaker with the unqualified steady-state characteristic: if the difference value between the lowest temperature of the components in the corresponding circuit breaker and the unqualified steady-state characteristic is in the corresponding difference value threshold range, judging that the corresponding circuit breaker is qualified in steady-state operation, and not performing any control; if the difference value between the lowest temperature of the corresponding components in the circuit breaker and the unqualified steady-state characteristics is not in the corresponding difference value threshold range, judging that the circuit breaker has unqualified steady-state operation risk, and performing corresponding parameter control on the current circuit breaker by using the unqualified steady-state characteristics as a control parameter threshold;
when the circuit breaker is in transient state operation, average voltage and average current in the circuit breaker are compared with corresponding qualified transient state characteristics: if the difference values of the average voltage and the average current in the circuit breaker and the corresponding parameters of the corresponding qualified transient state characteristics are all within the corresponding difference value threshold range, judging that the current circuit breaker is qualified in transient state operation, and not performing any control; if the difference values of the average voltage and the average current in the circuit breaker and the corresponding parameters of the corresponding qualified transient characteristics are not in the corresponding difference threshold range, comparing the voltage difference values of the components in the circuit breaker and the current difference values of the branches with the corresponding unqualified transient characteristics respectively: if the voltage difference value of the components in the circuit breaker, the current difference value of each branch circuit and the corresponding qualified transient characteristic parameter difference value are all in the corresponding difference threshold range, judging that the current circuit breaker is qualified in transient operation, and not performing any control; and if the voltage difference value of the components in the circuit breaker, the current difference value of each branch circuit and the corresponding qualified transient characteristic parameter difference value are not in the corresponding difference threshold range, performing corresponding parameter control on the current circuit breaker by taking unqualified transient operation as a control parameter threshold.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the operating state characteristics of the circuit breaker are managed, and the monitoring of the operating state of the circuit breaker and the fault pretreatment are carried out according to the real-time operating state characteristics, so that the operating efficiency of the circuit breaker can be effectively improved, the fault rate can be reduced, an enterprise can optimize the industrial structure, the expenditure can be reduced, the energy can be saved, the operating cost of the enterprise can be reduced, the health, harmony and sustainable development of the enterprise can be promoted, and the strong support can be provided for the long-term operation of the enterprise;
2. in the invention, the current monitoring is carried out on the circuit breaker in the operation process, the current operation state of the circuit breaker is judged through the current monitoring, and the characteristic management of the circuit breaker is improved, namely, the current characteristic comparison is a key stage in the process, the response speed and the action accuracy rate of the circuit breaker are directly concerned, and the rapid and effective detection of the fault can be realized only through complete processing and analysis; the circuit breaker in a steady-state time period is subjected to state monitoring, the running state of the circuit breaker in steady-state running is judged, the running state monitoring and controlling efficiency of the circuit breaker is improved, the running states of the circuit breaker in different running environments are obtained, the probability of safe running of the circuit breaker is effectively enhanced, and the working efficiency of the circuit breaker is improved; the state of the circuit breaker in the transient time period is monitored, the operating state of the transient operation of the circuit breaker is judged, the diversity of the operating state characteristics of the circuit breaker is improved, and the operating state management accuracy of the circuit breaker is enhanced;
3. according to the invention, the breaker is monitored through characteristic acquisition and analysis, whether the operation state of the breaker is normal or not is judged in advance according to the characteristics of different operation states, the working efficiency of the breaker is improved, meanwhile, the breaker is controlled in real time through pre-control, the breaker is subjected to advanced parameter adjustment, the adjustment can be carried out before a fault occurs, the fault is avoided, and meanwhile, the investment cost of monitoring and adjusting before the fault is controlled.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic block diagram of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a circuit breaker operating state feature management system based on data processing includes a feature management platform, wherein a current fast monitoring unit, a server, a steady-state analysis unit, a transient analysis unit, a feature acquisition and analysis unit, and a pre-control unit are disposed in the feature management platform; the processing process in the characteristic management platform is carried out according to the sequence of the current rapid monitoring unit, the server, the steady-state analysis unit, the transient-state analysis unit, the characteristic acquisition and analysis unit and the pre-control unit, and the steady-state analysis unit and the transient-state analysis unit belong to different processes in the same step;
the working principle of the hybrid high-voltage direct-current circuit breaker mainly utilizes a power electronic device to control the current switching-off and transferring processes, so that the mutual conversion of electromagnetic energy is realized, and finally, the energy release is completed through a lightning arrester; in the prior art, the diagnosis of electrical equipment such as a high-voltage circuit breaker and the like by a power system adopts two systems of post maintenance and regular maintenance; the after repair is also called as after remedy and refers to emergency treatment under the condition that the power equipment fails to send faults so that the system cannot normally operate; this is not an economical process, as post-repair is a remedy after system failure. Meanwhile, the mode is mainly used for repairing equipment which is not suitable for other modes or non-key equipment which has little effect on power production and equipment with redundant configuration. For regular maintenance, it means precaution, i.e. the equipment is inspected and maintained at regular intervals. At present, many power plants are overhauled according to the 'power plant overhaul regulation' issued by the original power industry ministry, and overhaul intervals are determined according to time quantum, but the mode of regular overhaul is not scientific and has adverse effects; the high-voltage circuit breakers are large in number, large in overhaul quantity and high in overhaul cost, so that the planned overhaul is relatively large, new faults are easily caused, and the reliability of equipment is reduced to some extent;
therefore, in the operation process of the circuit breaker, the management of the operation state characteristics is particularly important, the sustainable development of national economy can be promoted, the obvious improvement of the production environment of a factory is promoted, the prevention cost can be effectively controlled by the aid of the prior prediction of the basis, and the prevention accuracy can be enhanced at the same time, so that the characteristic management platform is used for managing the operation state characteristics of the circuit breaker in the system, the operation state monitoring and the fault preprocessing of the circuit breaker are carried out according to the real-time operation state characteristics, the operation efficiency of the circuit breaker can be effectively improved, the fault rate is reduced, an enterprise can optimize an industrial structure, expenditure is reduced, energy is saved, the operation cost of the enterprise is reduced, the health, harmony and sustainable development of the enterprise are promoted, and the strong support is provided for the long-term operation of the enterprise;
when the circuit breaker operates, the characteristic management platform generates the quick monitoring signal of electric current and sends the quick monitoring signal of electric current to the quick monitoring unit of electric current, the quick monitoring unit of electric current is used for carrying out current monitoring to the circuit breaker of operation in-process, judge the running state of current circuit breaker through current monitoring, it can be understood that what improve circuit breaker characteristic management, the current characteristic comparison is the key stage in the flow, directly concern the response speed and the action accuracy rate of circuit breaker, complete processing and analysis just can realize the quick effective detection to the trouble, concrete quick monitoring process of electric current is as follows:
setting a current monitoring time period, wherein the starting time of the current monitoring time period is the operating time of the circuit breaker, dividing the current monitoring time period into i sub-time points, wherein i is a natural number greater than 1, monitoring the circuit breaker of the current monitoring time period, acquiring corresponding current amplitudes of each sub-time point in the current monitoring time period to obtain corresponding current wave band lengths of current filtering, and respectively marking the corresponding current amplitudes of each sub-time point in the current monitoring time period to FZi and BDi according to the corresponding current wave band lengths of the current filtering; it can be understood that the filtering is an operation of filtering out specific band frequencies in the signal, and is an important measure for suppressing and preventing interference; according to the result of observing a certain random process, the probability theory and the method for estimating another random process related to the random process are provided; therefore, the longer the wavelength band length corresponding to the current filtering is, the stronger the interference prevention capability of the current signal is;
collecting the current collection period of each sub-time point in the current monitoring time period, and marking the current collection period of each sub-time point in the current monitoring time period as DZi; by the formula
Acquiring a current fast monitoring coefficient Xi of each sub-time point in a current monitoring time period, wherein a1, a2 and a3 are all preset proportionality coefficients, and a1 is greater than a2 is greater than a3 is greater than 0; comparing the current fast monitoring coefficient of each sub-time point in the current monitoring time period with a current fast monitoring coefficient threshold value:
if the current rapid monitoring coefficient of the sub-time point in the current monitoring time period exceeds the current rapid monitoring coefficient threshold, marking the corresponding sub-time point as a qualified time point, generating a current monitoring qualified signal and sending the current monitoring qualified signal and the corresponding qualified time point to a server; if the current rapid monitoring coefficient of the sub-time point in the current monitoring time period does not exceed the current rapid monitoring coefficient threshold, marking the corresponding sub-time point as an unqualified time point, generating an unqualified current monitoring signal and sending the unqualified current monitoring signal and the corresponding unqualified time point to a server;
after receiving the current monitoring qualified signal and the corresponding qualified time point, the server acquires a qualified time period according to the qualified time point, marks the operation of the circuit breaker in the qualified time period as the steady-state operation of the circuit breaker, and marks the time period corresponding to the steady-state operation as the steady-state time period; after receiving the unqualified current monitoring signal and the corresponding unqualified time point, the server acquires an unqualified time period according to an unqualified time period, the operation of the circuit breaker in the unqualified time period is marked as the transient operation of the circuit breaker, and the time period corresponding to the transient operation is marked as the transient time period; respectively sending the steady-state time period and the transient-state time period to a steady-state analysis unit and a transient-state analysis unit;
after the steady state analysis unit receives the steady state time period, the state of the circuit breaker in the steady state time period is monitored, the running state of the circuit breaker in the steady state operation is judged, the running state monitoring and control efficiency of the circuit breaker is improved, the running states of the circuit breaker in different running environments are obtained, the probability of safe running of the circuit breaker is effectively enhanced, the working efficiency of the circuit breaker is improved, and the specific steady state analysis process is as follows:
it can be understood that the auxiliary commutation switch with the breaker in a long-term running state generates heat seriously, and timely monitoring the hot spot temperature of an IGBT module or other devices in the switch is an important method for reflecting the steady state of the direct current breaker;
acquiring a temperature value and a corresponding temperature change speed of an auxiliary commutation switch in the circuit breaker in a steady-state time period, and respectively marking the temperature value and the corresponding temperature change speed of the auxiliary commutation switch in the circuit breaker in the steady-state time period as WDZ and WBV; acquiring an average temperature floating value of the components in the circuit breaker in a steady-state time period, and marking the average temperature floating value of the components in the circuit breaker in the steady-state time period as WFD; by the formula
Obtaining an analysis coefficient C of the steady-state operation of the circuit breaker, wherein b1, b2 and b3 are all preset proportionality coefficients, b1 is greater than b2 is greater than b3 is greater than 0, and beta 1 is an error correction factor and takes the value of 1.34;
comparing the analysis coefficient C of the circuit breaker in steady state operation with a threshold range of the steady state analysis coefficient:
if the analysis coefficient C of the circuit breaker in the steady-state operation is within the threshold range of the steady-state analysis coefficient, judging that the analysis of the corresponding circuit breaker in the steady-state operation is qualified, generating a qualified signal of the steady-state operation and sending the qualified signal of the steady-state operation to a feature acquisition and analysis unit; if the analysis coefficient C of the circuit breaker in the steady-state operation is not within the threshold range of the steady-state analysis coefficient, judging that the analysis of the corresponding circuit breaker in the steady-state operation is unqualified, generating an unqualified signal of the steady-state operation, and sending the unqualified signal of the steady-state operation to a feature acquisition and analysis unit;
after the transient state analysis unit receives the transient state time quantum, the state of the circuit breaker in the transient state time quantum is monitored, the running state of the transient state running of the circuit breaker is judged, the diversification of the running state characteristics of the circuit breaker is improved, the running state management accuracy of the circuit breaker is enhanced, and the specific transient state analysis process is as follows:
it can be understood that, transient process monitoring mechanism lies in that when the system breaks down or needs to quit from operating the high voltage direct current circuit breaker, the direct current circuit breaker works in the transient on-off operating state, the internal components break down or change in state, and because each branch circuit adopts series, parallel and series-parallel connection in the actual circuit breaker, the stray parameters that the hierarchical arrangement leads to between the branch circuits are not matched, all can influence the reliable and stable operation of circuit breaker. Especially for multi-device and multi-module equipment such as a high-voltage direct current breaker, the change or mismatching of parameters directly causes the change of the flow direction and the size of the current inside the breaker, and the change is especially more obvious in the transient on-off process, so that the conditions of non-uniform voltage of the monitored components and non-uniform current of branches in the transient on-off process are the key for state monitoring and state evaluation;
preferably, the maximum circulating voltage difference of the internal components of the circuit breaker in the transient time period and the maximum circulating current difference of each branch circuit in the circuit breaker are acquired, and the maximum circulating voltage difference of the internal components of the circuit breaker in the transient time period and the maximum circulating current difference of each branch circuit in the circuit breaker are respectively compared with a voltage difference threshold and a current difference threshold:
if the maximum circulating voltage difference value of the internal components of the circuit breaker in the transient time period exceeds a voltage difference value threshold value, or the maximum circulating current difference value of each branch in the circuit breaker exceeds a current difference value threshold value, judging that the transient operation analysis of the corresponding circuit breaker is unqualified, generating a transient operation analysis unqualified signal and sending the transient operation analysis unqualified signal to a feature acquisition and analysis unit; if the maximum circulating voltage difference value of the internal components of the circuit breaker does not exceed the voltage difference value threshold value in the transient time period and the maximum circulating current difference value of each branch circuit in the circuit breaker does not exceed the current difference value threshold value, judging that the transient operation analysis of the corresponding circuit breaker is qualified, generating a transient operation analysis qualified signal and sending the transient operation analysis qualified signal to the feature acquisition and analysis unit;
after the characteristic acquisition and analysis unit receives the steady-state operation qualified signal, the steady-state operation unqualified signal, the transient operation analysis unqualified signal and the transient operation analysis qualified signal, the characteristic acquisition and analysis of the circuit breaker are carried out according to the signal type, the temperature is used as the steady-state characteristic parameter of the circuit breaker, the steady-state operation qualified signal is acquired corresponding to the average temperature of each component in the steady-state time period and is marked as the qualified steady-state characteristic, the steady-state operation unqualified signal is acquired corresponding to the minimum temperature of each component in the steady-state time period and is marked as the unqualified steady-state characteristic;
taking the voltage and the current as transient characteristic parameters of the circuit breaker, collecting the lowest voltage amplitude and the lowest current amplitude of the circuit breaker in a transient time period corresponding to the unqualified transient operation analysis signal, marking the lowest voltage amplitude and the lowest current amplitude as unqualified transient characteristics, collecting the average voltage and the average current of the circuit breaker in the transient time period corresponding to the unqualified transient operation analysis signal, and marking the average voltage and the average current as qualified transient characteristics; it can be understood that when the lowest voltage amplitude and the lowest current amplitude are the unqualified transient characteristics, if any parameter in the unqualified transient characteristics is abnormal, the unqualified transient characteristics are judged;
sending the qualified steady-state feature, the unqualified steady-state feature, the qualified transient-state feature and the unqualified transient-state feature to a pre-control unit;
after the pre-control unit receives the qualified steady-state feature, the unqualified steady-state feature, the qualified transient-state feature and the unqualified transient-state feature, monitoring and controlling the operating circuit breaker, comparing the average temperature of components in the circuit breaker with the qualified steady-state feature when the circuit breaker is in steady-state operation, and judging that the current circuit breaker is qualified in steady-state operation if the corresponding difference change speed of the average temperature and the qualified steady-state feature does not exceed a corresponding threshold value, and not performing any control; if the variation speed of the corresponding difference value of the average temperature and the qualified steady-state characteristic exceeds the corresponding threshold value, comparing the lowest temperature of the corresponding components in the circuit breaker with the unqualified steady-state characteristic: if the difference value between the lowest temperature of the components in the corresponding circuit breaker and the unqualified steady-state characteristic is in the corresponding difference value threshold range, judging that the corresponding circuit breaker is qualified in steady-state operation, and not performing any control; if the difference value between the lowest temperature of the corresponding components in the circuit breaker and the unqualified steady-state characteristics is not in the corresponding difference value threshold range, judging that the circuit breaker has unqualified steady-state operation risk, and performing corresponding parameter control on the current circuit breaker by using the unqualified steady-state characteristics as a control parameter threshold;
when the circuit breaker is in transient state operation, average voltage and average current in the circuit breaker are compared with corresponding qualified transient state characteristics: if the difference values of the average voltage and the average current in the circuit breaker and the corresponding parameters of the corresponding qualified transient state characteristics are all within the corresponding difference value threshold range, judging that the current circuit breaker is qualified in transient state operation, and not performing any control; if the difference values of the average voltage and the average current in the circuit breaker and the corresponding parameters of the corresponding qualified transient characteristics are not in the corresponding difference threshold range, comparing the voltage difference values of the components in the circuit breaker and the current difference values of the branches with the corresponding unqualified transient characteristics respectively:
if the voltage difference value of the components in the circuit breaker, the current difference value of each branch circuit and the corresponding qualified transient characteristic parameter difference value are all in the corresponding difference threshold range, judging that the current circuit breaker is qualified in transient operation, and not performing any control; and if the voltage difference value of the components in the circuit breaker, the current difference value of each branch circuit and the corresponding qualified transient characteristic parameter difference value are not in the corresponding difference threshold range, performing corresponding parameter control on the current circuit breaker by taking unqualified transient operation as a control parameter threshold.
The formulas are obtained by acquiring a large amount of data and performing software simulation, and the coefficients in the formulas are set by the technicians in the field according to actual conditions;
when the circuit breaker monitoring device is used, the characteristic management platform generates a current rapid monitoring signal and sends the current rapid monitoring signal to the current rapid monitoring unit, and the current rapid monitoring unit monitors the current of the circuit breaker in the operation process; the circuit breaker in the steady-state time period is subjected to state monitoring through the steady-state analysis unit, the operation state of the circuit breaker in the steady-state operation is judged, the circuit breaker in the transient-state time period is subjected to state monitoring through the transient-state analysis unit, and the operation state of the transient-state operation of the circuit breaker is judged; performing characteristic acquisition analysis on the circuit breaker according to the signal type through a characteristic acquisition analysis unit; and monitoring and controlling the running circuit breaker through the pre-control unit.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A circuit breaker running state feature management system based on data processing is characterized by comprising
The current rapid monitoring unit is used for monitoring the current of the circuit breaker at each sub-time point in the current monitoring time period and acquiring a qualified time point and an unqualified time point through current monitoring;
the server is used for acquiring a qualified time period and an unqualified time period according to the qualified time point and the unqualified time point, and respectively marking the qualified time period and the unqualified time period as a steady-state time period and a transient-state time period;
the steady state analysis unit is used for monitoring the state of the circuit breaker in a steady state time period, generating a steady state operation qualified signal and a steady state operation unqualified signal through the state monitoring, and sending the signals to the characteristic acquisition and analysis unit;
the transient analysis unit is used for monitoring the state of the circuit breaker in the transient time period, generating a transient operation analysis qualified signal and a transient operation analysis unqualified signal through the state monitoring, and sending the signals to the characteristic acquisition and analysis unit;
and the characteristic acquisition and analysis unit is used for carrying out characteristic acquisition and analysis on the circuit breaker according to signal types, wherein the signal types comprise a steady-state operation qualified signal, a steady-state operation unqualified signal, a transient operation analysis unqualified signal and a transient operation analysis qualified signal.
2. The circuit breaker operation state feature management system based on data processing as claimed in claim 1, further comprising a pre-control unit for monitoring and controlling the circuit breaker in operation according to the feature type; the feature types are represented as qualified steady-state features, unqualified steady-state features, qualified transient features, and unqualified transient features.
3. The system for managing the operating state characteristics of the circuit breaker based on data processing as claimed in claim 1, wherein the current rapid monitoring process of the current rapid monitoring unit is as follows:
setting a current monitoring time period, wherein the starting time of the current monitoring time period is the operating time of the circuit breaker, dividing the current monitoring time period into i sub-time points, wherein i is a natural number greater than 1, monitoring the circuit breaker of the current monitoring time period, acquiring corresponding current amplitudes of each sub-time point in the current monitoring time period to obtain corresponding current wave band lengths of current filtering, and respectively marking the corresponding current amplitudes of each sub-time point in the current monitoring time period to FZi and BDi according to the corresponding current wave band lengths of the current filtering; collecting the current collection period of each sub-time point in the current monitoring time period, and marking the current collection period of each sub-time point in the current monitoring time period as DZi; the current rapid monitoring coefficient Xi of each sub time point in the current monitoring time period is obtained through analysis, and the current rapid monitoring coefficient of each sub time point in the current monitoring time period is compared with a current rapid monitoring coefficient threshold value:
if the current rapid monitoring coefficient of the sub-time point in the current monitoring time period exceeds the current rapid monitoring coefficient threshold, marking the corresponding sub-time point as a qualified time point, generating a current monitoring qualified signal and sending the current monitoring qualified signal and the corresponding qualified time point to a server; and if the current rapid monitoring coefficient of the sub-time point in the current monitoring time period does not exceed the current rapid monitoring coefficient threshold, marking the corresponding sub-time point as an unqualified time point, generating an unqualified current monitoring signal and sending the unqualified current monitoring signal and the corresponding unqualified time point to the server.
4. The system for managing the operating state characteristics of the circuit breaker based on data processing as claimed in claim 1, wherein the steady state analysis process of the steady state analysis unit is as follows:
acquiring a temperature value and a corresponding temperature change speed of an auxiliary commutation switch in the circuit breaker in a steady-state time period, and respectively marking the temperature value and the corresponding temperature change speed of the auxiliary commutation switch in the circuit breaker in the steady-state time period as WDZ and WBV; acquiring an average temperature floating value of the components in the circuit breaker in a steady-state time period, and marking the average temperature floating value of the components in the circuit breaker in the steady-state time period as WFD; obtaining an analysis coefficient C of the circuit breaker in the steady state operation through analysis, and comparing the analysis coefficient C of the circuit breaker in the steady state operation with a threshold range of the steady state analysis coefficient:
if the analysis coefficient C of the circuit breaker in the steady-state operation is within the threshold range of the steady-state analysis coefficient, judging that the analysis of the corresponding circuit breaker in the steady-state operation is qualified, generating a qualified signal of the steady-state operation and sending the qualified signal of the steady-state operation to a feature acquisition and analysis unit; and if the analysis coefficient C of the circuit breaker in the steady-state operation is not in the threshold range of the steady-state analysis coefficient, judging that the analysis of the corresponding circuit breaker in the steady-state operation is unqualified, generating an unqualified signal of the steady-state operation, and sending the unqualified signal of the steady-state operation to the characteristic acquisition and analysis unit.
5. The system for managing the operating status characteristics of the circuit breaker based on the data processing as claimed in claim 1, wherein the transient analysis process of the transient analysis unit is as follows:
the maximum circulating voltage difference value of the internal components of the circuit breaker in the transient time period and the maximum circulating current difference value of each branch circuit in the circuit breaker are collected, and the maximum circulating voltage difference value of the internal components of the circuit breaker in the transient time period and the maximum circulating current difference value of each branch circuit in the circuit breaker are respectively compared with a voltage difference value threshold value and a current difference value threshold value:
if the maximum circulating voltage difference value of the internal components of the circuit breaker in the transient time period exceeds a voltage difference value threshold value, or the maximum circulating current difference value of each branch in the circuit breaker exceeds a current difference value threshold value, judging that the transient operation analysis of the corresponding circuit breaker is unqualified, generating a transient operation analysis unqualified signal and sending the transient operation analysis unqualified signal to a feature acquisition and analysis unit; and if the maximum circulating voltage difference value of the internal components of the circuit breaker does not exceed the voltage difference value threshold value in the transient time period and the maximum circulating current difference value of each branch circuit in the circuit breaker does not exceed the current difference value threshold value, judging that the transient operation analysis of the corresponding circuit breaker is qualified, generating a transient operation analysis qualified signal and sending the transient operation analysis qualified signal to the feature acquisition and analysis unit.
6. The circuit breaker operation state feature management system based on data processing is characterized in that the feature acquisition and analysis unit takes the temperature as a circuit breaker steady-state feature parameter, acquires the steady-state operation qualified signal corresponding to the average temperature of each component in a steady-state time period and marks the steady-state operation qualified signal as a qualified steady-state feature, acquires the steady-state operation unqualified signal corresponding to the minimum temperature of each component in the steady-state time period and marks the steady-state operation unqualified signal as an unqualified steady-state feature;
taking the voltage and the current as transient characteristic parameters of the circuit breaker, collecting the lowest voltage amplitude and the lowest current amplitude of the circuit breaker in a transient time period corresponding to the unqualified transient operation analysis signal, marking the lowest voltage amplitude and the lowest current amplitude as unqualified transient characteristics, collecting the average voltage and the average current of the circuit breaker in the transient time period corresponding to the unqualified transient operation analysis signal, and marking the average voltage and the average current as qualified transient characteristics; and sending the qualified steady-state feature, the unqualified steady-state feature, the qualified transient-state feature and the unqualified transient-state feature to the pre-control unit together.
7. The system for managing the operating state characteristics of the circuit breaker based on data processing as claimed in claim 2, wherein the pre-control process of the pre-control unit is as follows:
when the circuit breaker is in steady-state operation, comparing the average temperature of components in the circuit breaker with qualified steady-state characteristics, and if the variation speed of the corresponding difference value of the average temperature and the qualified steady-state characteristics does not exceed a corresponding threshold value, judging that the current circuit breaker is qualified in steady-state operation and not performing any control; if the variation speed of the corresponding difference value of the average temperature and the qualified steady-state characteristic exceeds the corresponding threshold value, comparing the lowest temperature of the corresponding components in the circuit breaker with the unqualified steady-state characteristic: if the difference value between the lowest temperature of the components in the corresponding circuit breaker and the unqualified steady-state characteristic is in the corresponding difference value threshold range, judging that the corresponding circuit breaker is qualified in steady-state operation, and not performing any control; if the difference value between the lowest temperature of the corresponding components in the circuit breaker and the unqualified steady-state characteristics is not in the corresponding difference value threshold range, judging that the circuit breaker has unqualified steady-state operation risk, and performing corresponding parameter control on the current circuit breaker by using the unqualified steady-state characteristics as a control parameter threshold;
when the circuit breaker is in transient state operation, average voltage and average current in the circuit breaker are compared with corresponding qualified transient state characteristics: if the difference values of the average voltage and the average current in the circuit breaker and the corresponding parameters of the corresponding qualified transient state characteristics are all within the corresponding difference value threshold range, judging that the current circuit breaker is qualified in transient state operation, and not performing any control; if the difference values of the average voltage and the average current in the circuit breaker and the corresponding parameters of the corresponding qualified transient characteristics are not in the corresponding difference threshold range, comparing the voltage difference values of the components in the circuit breaker and the current difference values of the branches with the corresponding unqualified transient characteristics respectively: if the voltage difference value of the components in the circuit breaker, the current difference value of each branch circuit and the corresponding qualified transient characteristic parameter difference value are all in the corresponding difference threshold range, judging that the current circuit breaker is qualified in transient operation, and not performing any control; and if the voltage difference value of the components in the circuit breaker, the current difference value of each branch circuit and the corresponding qualified transient characteristic parameter difference value are not in the corresponding difference threshold range, performing corresponding parameter control on the current circuit breaker by taking unqualified transient operation as a control parameter threshold.
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| CN117590141B (en) * | 2024-01-19 | 2024-03-26 | 青岛中微创芯电子有限公司 | IPM electrical parameter testing system based on data analysis |
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Denomination of invention: A data processing-based circuit breaker operating state feature management system Effective date of registration: 20220830 Granted publication date: 20220506 Pledgee: Dongying Rural Commercial Bank Co.,Ltd. Hekou sub branch Pledgor: OUMILO ELECTRIC Co.,Ltd. Registration number: Y2022980013778 |
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Denomination of invention: A Data Processing Based Management System for Operating State Characteristics of Circuit Breakers Effective date of registration: 20230830 Granted publication date: 20220506 Pledgee: Dongying Rural Commercial Bank Co.,Ltd. Hekou sub branch Pledgor: OUMILO ELECTRIC Co.,Ltd. Registration number: Y2023980054720 |