CN110470939A - The monitoring power distribution cabinet and line fault judgment method of a kind of automatic detection and alarm - Google Patents
The monitoring power distribution cabinet and line fault judgment method of a kind of automatic detection and alarm Download PDFInfo
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- CN110470939A CN110470939A CN201910719730.XA CN201910719730A CN110470939A CN 110470939 A CN110470939 A CN 110470939A CN 201910719730 A CN201910719730 A CN 201910719730A CN 110470939 A CN110470939 A CN 110470939A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The embodiment of the invention discloses a kind of automatic monitoring power distribution cabinets detected and alarm, monitoring data that received acquisition component acquires are handled and are obtained data sequence according to clock trend by control system, and according to data sequence compared with historical data sequence carry out breakdown judge；Its line fault judgment method is mainly by being current data and voltage data by the temperature analytic uniform of the electric current of collected power distribution cabinet route, voltage and key point, and the historical data obtained before being come into operation using power distribution cabinet is as standard, judge the power distribution cabinet route in the current slot of real-time update data whether failure, effectively automatic recovery ability of the system in the case where there are wild effect or abnormal conditions itself is taken into account by this method, it can reduce the error rate of system judgement, accuracy of judgement degree is improved, can reduce the cost of maintenance maintenance.
Description
Technical field
The present embodiments relate to monitoring power distribution cabinet technical fields, and in particular to a kind of detection automatically and the monitoring alarmed are matched
Electric cabinet and line fault judgment method.
Background technique
Power distribution cabinet is one of controller switching equipment important in building.The safe and stable operation of power distribution cabinet is directly related to just
Normal production and daily life.When in equipment running process, meeting is because a variety of causes cause to generate heat, such as Surface Oxygen in power distribution cabinet
Change, connecting screw loosen or other reasons cause contact resistance it is excessive caused by fever.Usually these fever in operation without
Method is with the naked eye observed, higher and higher with temperature, eventually leads to fire incident.
Science and technology is constantly progressive, so that industrial or agricultural power load is at growth trend year by year, therefore by setting to distribution
Standby on-line monitoring just becomes the weight of power industry so that reduction as much as possible is lost to predict the generation of accident in advance
Want problem.
Currently, monitoring mainly by the monitoring of electric current, voltage and temperature for power distribution cabinet, but for power distribution cabinet route
Breakdown judge according to more unilateral, be all often to compare a preset threshold value to be compared to determine, but distribution
Cabinet route and component etc. generally have certain self-recovery ability, and existing technology is easy to omit in power distribution cabinet route
Directly it is determined as failure in the case where micro- wild effect or exception, the judgement of mistake is caused to will increase the cost of maintenance maintenance,
And influence the normal work of power distribution cabinet.
Summary of the invention
For this purpose, the embodiment of the present invention provides a kind of automatic detection and the monitoring power distribution cabinet alarmed and line fault judgement side
Method, to solve to be easy in the prior art to be directly determined as in the case that slightly wild effect or exception is occurred in power distribution cabinet route
Failure causes the judgement of mistake to will increase the cost of maintenance maintenance, and the problem of the normal work of influence power distribution cabinet.
To achieve the goals above, the embodiment of the present invention provides the following technical solutions:
In the first aspect of the embodiment of the present invention, a kind of automatic monitoring power distribution cabinet detected and alarm is provided, including
It is arranged in the cabinet body for monitoring the acquisition component of power distribution cabinet route, and the prison for receiving the acquisition component acquisition
The control system of measured data, the control system and the acquisition component communication connection；
The received monitoring data are handled and are obtained data sequence according to clock trend by the control system, and
According to the data sequence compared with historical data sequence carry out breakdown judge；
The acquisition component is used to acquire the three-phase electric energy of the fundamental wave of the power distribution cabinet route, harmonic wave and all-wave measurement pattern
The three-phase electric energy data feedback to the control system of data, acquisition is parsed, and current data and voltage data are obtained；
The signal end of the control system connects remote monitoring terminal, the remote monitoring terminal connection by wireless module
There is the alarm module for alarming when the control system is judged as exception.
Further, the control system includes three-phase electrical energy computation chip and main control chip, the three-phase electric energy
Metering chip is electrically connected the main control chip by SPI wiring.
Further, the acquisition component includes the voltage transformer for acquiring the power distribution cabinet line voltage distribution, acquisition
The current transformer of the power distribution cabinet line current, and acquire the temperature number of the Temperature Key test point of the power distribution cabinet route
According to temperature collecting module.
Further, the Temperature Key test point includes position of the switch point and wiring point.
Further, multiple voltage acquisition points, current acquisition point and Temperature Key are provided on the power distribution cabinet route
Test point, the voltage transformer acquire the voltage of the voltage acquisition point, and the current transformer acquires the current acquisition
The electric current of point；Each voltage acquisition point, current acquisition point and Temperature Key test point include to be stored in the control
Historical data sequence in system.
In a second aspect of an embodiment of the invention, a kind of line fault judgment method of power distribution cabinet is provided, including such as
Lower step:
Step 100, in each collection point, acquired on the collection point in some current slot using sampling module
The three-phase electric energy data of the fundamental wave of several time points, harmonic wave and all-wave measurement pattern；
Three-phase electric energy data are carried out dissection process by step 200, are converted to multiple current flows in the present period
Data and current voltage data；
Step 300 executes step 100 and step 200, is tested in some historical time section before power distribution cabinet comes into operation
The raw current data and raw voltage data of each collection point on the distribution line at several time points；
The raw current data is handled and is obtained according to clock trend with the raw voltage data by step 400
The original data sequence of each collection point is taken, original series matched curve is drawn；
Step 500, the current flow data and the current voltage data that each collection point will be obtained in real time
Current data sequence is handled and obtained according to clock trend, draws current sequence matched curve；
The weight of step 600, the current data sequence of the more same collection point and the original series matched curve
It is right, if the registration is less than preset threshold, it is judged as distribution line failure, alarms, if the registration is greater than
The preset threshold is then judged as that distribution line is normal.
Further, the current slot is set using the historical time section as standard, the current slot
Identical with the duration of the historical time section, time point distribution is identical.
Further, the registration is provided with error range value, and the error range value is original series fitting
Curve and the current sequence matched curve are set in the preset error range value in the distance value of same time point
The current sequence matched curve is overlapped with the original series matched curve, when exceeding the preset error range value,
The current sequence matched curve is set not to be overlapped with the original series matched curve.
Further, the calculation of the registration are as follows: in the same current slot, time of coincidence points with
The ratio value that total time counts.
Further, further include the steps that carrying out rolling amendment to the original data sequence, obtain normal data sequence,
And then obtain original series matched curve, specific steps are as follows:
Using the current data sequence of real-time update as new historical data sequence, and filters out and match in historical time section
Electric cabinet route is determined as the historical data sequence of failure；
It successively by the original series matched curve whole of each section of historical time section and is combined from the off
Mixing Curve is formed, and takes the average value of the maximum value and minimum value of all time point Mixing Curves in all historical time sections,
As new collection point, all new collection points are connected, and then obtain new standard sequence matched curve.
The embodiment of the present invention has the advantages that
The present invention is by being electricity by the temperature analytic uniform of the electric current of collected power distribution cabinet route, voltage and key point
Flow data and voltage data, and the historical data obtained before being come into operation using power distribution cabinet judges real-time update as standard
The data of power distribution cabinet route in current slot whether failure, by this method effectively by system itself occur it is unstable
The automatic recovery ability determined under phenomenon or abnormal conditions is taken into account, and can reduce the error rate of system judgement, improves accuracy of judgement
Degree can reduce the cost of maintenance maintenance.
Detailed description of the invention
It, below will be to embodiment party in order to illustrate more clearly of embodiments of the present invention or technical solution in the prior art
Formula or attached drawing needed to be used in the description of the prior art are briefly described.It should be evident that the accompanying drawings in the following description is only
It is merely exemplary, it for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer, which is extended, obtains other implementation attached drawings.
Structure depicted in this specification, ratio, size etc., only to cooperate the revealed content of specification, for
Those skilled in the art understands and reads, and is not intended to limit the invention enforceable qualifications, therefore does not have technical
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the function of the invention that can be generated
Under effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents obtain and can cover.
Fig. 1 is overall structure diagram of the invention；
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Embodiment 1:
A kind of automatic monitoring power distribution cabinet detected and alarm is present embodiments provided, general includes being arranged in the cabinet
For monitoring the acquisition component of power distribution cabinet route, and the control for receiving the monitoring data that the acquisition component obtains in body
The signal end of system, the control system and the acquisition component communication connection, the control system is connected by wireless module
Remote monitoring terminal, the remote monitoring terminal are connected with the report for alarming when the control system is judged as exception
Alert module.
In this embodiment, acquisition component data collected are broadly divided into two major classes, and one is mainly power distribution cabinet route sheet
The data of body, the generally voltage data and current data of some location point of power distribution cabinet route, secondly for power distribution cabinet route
Exogenous data, the temperature data of key position generally on power distribution cabinet route, when being broken down due to power distribution cabinet route, either
When voltage or current anomaly, the overwhelming majority can cause temperature to increase, and therefore, carry out to the temperature data of key position effective
Reasonable analysis is to monitor one of the important way of power distribution cabinet.
Wherein, acquisition component is used to acquire the three-phase electricity of the fundamental wave of the power distribution cabinet route, harmonic wave and all-wave measurement pattern
Energy data, the three-phase electric energy data feedback to the control system of acquisition are parsed, and current data and voltage number are obtained
According to；The received monitoring data are handled and are obtained data sequence according to clock trend by control system, and according to described
Data sequence carry out breakdown judge compared with historical data sequence.
In the present embodiment, the technology for mainly utilizing three-phase electricity, by the unified intuitive parsing of all data of acquisition component
To have the current data of specific value or voltage data (referred to as target data), consequently facilitating being carried out to target data accurate
Analysis, processing and than peering, so obtain to power distribution cabinet route whether the more accurate judgment basis of failure.
In the present invention, three kinds of states of power distribution cabinet route are defined, wild effect, exception and failure, the above two are
It is interpreted as only being simply present in the possibility of failure, only when being determined as failure, just executes the operation such as alarm.
Wherein, control system includes three-phase electrical energy computation chip and main control chip, the three-phase electrical energy computation chip
It is electrically connected the main control chip by SPI wiring, the signal input part of the three-phase electrical energy computation chip, which is electrically connected with, to be adopted
Collect module；Acquisition component includes the voltage transformer for acquiring the power distribution cabinet line voltage distribution, acquires the power distribution cabinet route
The current transformer of electric current, and acquire the temperature acquisition mould of the temperature data of the Temperature Key test point of the power distribution cabinet route
Block.Temperature Key test point includes position of the switch point and wiring point, in practice and position of the switch point and wiring point failure rate most
It is high.
Wherein, main control chip is the control centre of whole system, can will be collected using STM8S Series Controller
Data are sent to data terminal and carry out real-time display, and carry out data storage by storage chip.Wireless module 403 mainly uses
The rf chip of nRF24L01 model constructs sensor network, realizes the reception and transmission of sensing data.
Using the control chip of RN8302B model as three-phase electrical energy computation chip, main electrical energy measurement process is as follows:
Firstly, executing relevant control pin after receiving the commencing signal of main control chip and being grasped with the initialization of register
Make；
Secondly, emptying calibration data, and the enabled point of calibration register write is set and is put down, the calibration data in memory are read
And calibration register is written；Calibration register write enable signal is closed, the measurement register that three-phase electrical energy computation chip is arranged makes
Energy signal is conventional full wave mode, and adjusts measurement pattern according to the control command of main control chip, measures electric energy related data；
Finally, by being saved in important electric energy or order data write-in memory, and interval time is set, it waits next
Instruction.
Due to being also that the current data of acquisition is converted to voltage data and is divided on the spirit of temperature sensor
Analysis, therefore, temperature sensor equally uses data processing method identical with current transformer, voltage transformer.
In the present embodiment, multiple voltage acquisition points, current acquisition point and temperature are provided on the power distribution cabinet route
Crucial test point, the voltage transformer acquire the voltage of the voltage acquisition point, and the current transformer acquires the electric current
The electric current of collection point；Each voltage acquisition point, current acquisition point and Temperature Key test point include be stored in it is described
Historical data sequence in control system.The setting of each collection point quantity, be according to the complexity of power distribution cabinet route with
And depending on the quantity of key point.
Embodiment 2:
Since distribution line is made of all kinds of components, the failure of each component or abnormal phenomenon or shakiness
The exception or wild effect of distribution line can be caused by determining phenomenon all, and still, electronic component and distribution line have centainly
Self-healing, when referring in particular to occur wild effect, do not represent and shutdown maintenance, the prior art needed with regard to certain failure
In it is more unilateral for the judgement of failure, failure is generally just directly determined as when abnormal phenomenon occurs in distribution line, this just leads
Cause increases the probability of maintenance, service work.
As shown in Figure 1, including the following steps: the present invention provides a kind of line fault judgment method of power distribution cabinet
Step 100, in each collection point, acquired on the collection point in some current slot using sampling module
The three-phase electric energy data of the fundamental wave of several time points, harmonic wave and all-wave measurement pattern；
Three-phase electric energy data are carried out dissection process by step 200, are converted to multiple current flows in the present period
Data and current voltage data；
Step 300 executes step 100 and step 200, is tested in some historical time section before power distribution cabinet comes into operation
The raw current data and raw voltage data of each collection point on the distribution line at several time points；
The raw current data is handled and is obtained according to clock trend with the raw voltage data by step 400
The original data sequence of each collection point is taken, original series matched curve is drawn；
Step 500, the current flow data and the current voltage data that each collection point will be obtained in real time
Current data sequence is handled and obtained according to clock trend, draws current sequence matched curve；
The weight of step 600, the current data sequence of the more same collection point and the original series matched curve
It is right, if the registration is less than preset threshold, it is judged as distribution line failure, alarms, if the registration is greater than
The preset threshold is then judged as that distribution line is normal.
Wherein, current slot is set using the historical time section as standard, and the current slot is gone through with described
The duration of history period is identical, and time point distribution is identical.
Registration is provided with error range value, and the error range value is the original series matched curve and described current
It is quasi- to set the current sequence in the preset error range value in the distance value of same time point for sequence fit curve
It closes curve to be overlapped with the original series matched curve, when exceeding the preset error range value, setting is described to work as preamble
Column matched curve is not overlapped with the original series matched curve；The calculation of registration are as follows: the same current slot
It is interior, the ratio value of the time points and total time points of coincidence.
In the present embodiment, further include the steps that carrying out rolling amendment to the original data sequence, obtain normal data
Sequence, and then obtain original series matched curve, specific steps are as follows:
Using the current data sequence of real-time update as new historical data sequence, and filters out and match in historical time section
Electric cabinet route is determined as the historical data sequence of failure；
It successively by the original series matched curve whole of each section of historical time section and is combined from the off
Mixing Curve is formed, and takes the average value of the maximum value and minimum value of all time point Mixing Curves in all historical time sections,
As new collection point, all new collection points are connected, and then obtain new standard sequence matched curve.
The present invention is by being electricity by the temperature analytic uniform of the electric current of collected power distribution cabinet route, voltage and key point
Flow data and voltage data, and the historical data obtained before being come into operation using power distribution cabinet judges real-time update as standard
The data of power distribution cabinet route in current slot whether failure, by this method effectively by system itself occur it is unstable
The automatic recovery ability determined under phenomenon or abnormal conditions is taken into account, and can reduce the error rate of system judgement, improves accuracy of judgement
Degree.
Moreover, by the method for rolling amendment, the continuous reference data of more new standard, to further increase judgement
Accuracy.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (10)
1. a kind of automatic monitoring power distribution cabinet detected and alarm, including being arranged in the cabinet body for monitoring power distribution cabinet route
Acquisition component, and the control system for receiving the monitoring data that the acquisition component obtains, the control system with it is described
Acquisition component communication connection, it is characterised in that:
The received monitoring data are handled and are obtained data sequence according to clock trend by the control system, and according to
Data sequence carry out breakdown judge compared with historical data sequence；
The acquisition component is used to acquire the three-phase electric energy number of the fundamental wave of the power distribution cabinet route, harmonic wave and all-wave measurement pattern
According to the three-phase electric energy data feedback to the control system of acquisition is parsed, and current data and voltage data are obtained；
The signal end of the control system connects remote monitoring terminal by wireless module, and the remote monitoring terminal connection is useful
In the alarm module alarmed when the control system is judged as exception.
2. a kind of automatic monitoring power distribution cabinet detected and alarm according to claim 1, it is characterised in that: the control system
System includes three-phase electrical energy computation chip and main control chip, and the three-phase electrical energy computation chip is electrically connected by SPI wiring
The main control chip.
3. a kind of automatic monitoring power distribution cabinet detected and alarm according to claim 1, it is characterised in that: the acquisition portion
Part includes the voltage transformer for acquiring the power distribution cabinet line voltage distribution, acquires the Current Mutual Inductance of the power distribution cabinet line current
Device, and acquire the temperature collecting module of the temperature data of the Temperature Key test point of the power distribution cabinet route.
4. a kind of automatic monitoring power distribution cabinet detected and alarm according to claim 1, it is characterised in that: the temperature is closed
Key test point includes position of the switch point and wiring point.
5. a kind of automatic monitoring power distribution cabinet detected and alarm according to claim 1, it is characterised in that: in the distribution
Multiple voltage acquisition points, current acquisition point and Temperature Key test point are provided on cabinet route, the voltage transformer acquires institute
The voltage of voltage acquisition point is stated, the current transformer acquires the electric current of the current acquisition point；Each voltage acquisition point,
Current acquisition point and Temperature Key test point include the historical data sequence being stored in the control system.
6. a kind of line fault judgment method of power distribution cabinet, characterized by the following steps:
Step 100, in each collection point, acquired on the collection point using sampling module several in some current slot
The three-phase electric energy data of the fundamental wave at time point, harmonic wave and all-wave measurement pattern；
Three-phase electric energy data are carried out dissection process by step 200, are converted to multiple current flow data in the present period
With current voltage data；
Step 300 executes step 100 and step 200, tests before power distribution cabinet comes into operation several in some historical time section
The raw current data and raw voltage data of each collection point on the distribution line at a time point；
The raw current data and the raw voltage data are handled according to clock trend and are obtained every by step 400
The original data sequence of one collection point draws original series matched curve；
Step 500, the current flow data and the current voltage data foundation that each collection point will be obtained in real time
Clock trend is handled and is obtained current data sequence, draws current sequence matched curve；
The registration of step 600, the current data sequence of the more same collection point and the original series matched curve,
If the registration is less than preset threshold, it is judged as distribution line failure, alarms, if the registration is greater than described pre-
If threshold value, then it is judged as that distribution line is normal.
7. a kind of line fault judgment method of power distribution cabinet according to claim 6, which is characterized in that the current time
Section is set using the historical time section as standard, and the current slot is identical with the duration of the historical time section, when
Between point distribution it is identical.
8. a kind of line fault judgment method of power distribution cabinet according to claim 7, which is characterized in that the registration is set
It is equipped with error range value, the error range value is for the original series matched curve with the current sequence matched curve in phase
With the distance value at time point, in the preset error range value, set the current sequence matched curve with it is described original
Sequence fit curve co-insides, exceed the preset error range value when, set the current sequence matched curve with it is described
Original series matched curve is not overlapped.
9. a kind of line fault judgment method of power distribution cabinet according to claim 7, which is characterized in that the registration
Calculation are as follows: in the same current slot, the ratio value of the time points and total time points of coincidence.
10. a kind of line fault judgment method of power distribution cabinet according to claim 7, which is characterized in that further include to institute
The step of original data sequence carries out rolling amendment is stated, obtains normal data sequence, and then obtain original series matched curve, tool
Body step are as follows:
Using the current data sequence of real-time update as new historical data sequence, and filter out power distribution cabinet in historical time section
Route is determined as the historical data sequence of failure；
Successively the original series matched curve whole of each section of historical time section and being combined to be formed from the off
Mixing Curve, and the average value of the maximum value and minimum value of all time point Mixing Curves in all historical time sections is taken, as
New collection point connects all new collection points, and then obtains new standard sequence matched curve.
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| CN110940892A (en) * | 2019-12-13 | 2020-03-31 | 西安锐驰电器有限公司 | Equipment line fault detection system and method |
| CN111769468A (en) * | 2020-06-30 | 2020-10-13 | 江苏高泰电气有限公司 | Monitoring power distribution cabinet capable of automatically detecting and alarming and heat dissipation method thereof |
| CN113848430A (en) * | 2021-10-20 | 2021-12-28 | 广东电网有限责任公司广州供电局 | Electric energy fault monitoring method and device |
| CN114038187A (en) * | 2021-11-02 | 2022-02-11 | 北京红山信息科技研究院有限公司 | Road section state updating method, device, equipment and medium |
| CN114371658A (en) * | 2021-12-27 | 2022-04-19 | 上海滨捷机电有限公司 | Control method and system for integrated electric cabinet of numerical control machine tool, electronic equipment and readable storage medium |
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