CN109212462A - A kind of fault detection method of single-phase intelligent electric energy meter residual amount exception - Google Patents
A kind of fault detection method of single-phase intelligent electric energy meter residual amount exception Download PDFInfo
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- CN109212462A CN109212462A CN201811360055.8A CN201811360055A CN109212462A CN 109212462 A CN109212462 A CN 109212462A CN 201811360055 A CN201811360055 A CN 201811360055A CN 109212462 A CN109212462 A CN 109212462A
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- energy meter
- residual amount
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
Abstract
The invention discloses a kind of fault detection methods of single-phase intelligent electric energy meter residual amount exception, including carrying out Preliminary detection to abnormal electric energy meter: if the current residual amount of money in abnormal electric energy meter eeprom memory sports 644XXX.XX member, residual amount numerical value is normal in ESAM, but power purchase record in exist supplement with money rear residual amount sport 644XXX.XX member；Then residual amount anomaly occurs in local plug-in card and supplements process with money, and is determined as fault category 1；If the current residual amount of money in abnormal electric energy meter eeprom memory sports 949XXX.XX member, residual amount numerical value is normal in ESAM, but electricity data sports 949XXX.XXkWh, then residual amount, which anomaly occurs in, normally stops telegram in reply process, and is determined as fault category 2.
Description
Technical field
The present invention relates to the detections and exclusion of single-phase intelligent electric energy meter residual amount abnormal failure, and in particular to a kind of single-phase
The fault detection method of intelligent electric energy meter residual amount exception.
Background technique
Intelligent electric energy meter is the terminal of smart grid, and in addition to having conventional metered dose function, there are also data processings, real-time monitoring
Deng other intelligent functions.Intelligent electric energy meter it is reliable and stable for ensure smart grid security operation it is significant.However with
Intelligent electric energy meter put into operation time limit increase, it is abnormal there are residual amount that various regions intelligent electric energy meter exposes electric energy meter successively
Accident defect.Electric energy meter residual amount abnormal failure phenomenon show themselves in that when intelligent electric energy meter plug-in card supplement with money or stop telegram in reply when,
The display of meter residual amount is abnormal, usually sports hundreds of thousands numerical value or messy code.Residual amount is made of 4 bytes
(XXXXXX.XX), from the point of view of the meter that current residual amount is abnormal, 4 bytes are changed, but do not find only have
The phenomenon that low 2 bytes change, the probability that theoretically residual amount becomes smaller are much smaller than the probability to become larger.Therefore the failure meeting
Power information acquisition system normal operation is seriously affected, brings massive losses and difficulty to enterprise trade clearing and electricity statistics.
In addition to this, different types of intelligent electric energy meter has different fault characteristics, designs for malfunction test and brings more difficulties.To seek
Failure cause is looked for, prevents such failure and stretches on a large scale development, failure hair need to be searched according to different fault characteristic contrived experiments
Raw rule and principle, and propose scientific and effective solution, avoid occurring similar failure generation again from now on.
Summary of the invention
The present invention provides a kind of single-phase to solve the problems, such as that intelligent electric meter can not be detected and be excluded when breaking down
The fault detection method of intelligent electric energy meter residual amount exception carries out experimental analysis by phenomenon of the failure, obtains single-phase intelligent electricity
The rule and principle that energy table residual amount exception numerical value occurs, and such failure is reappeared by test and is verified, help to keep away
Exempt from occur similar failure generation again from now on.
The present invention is achieved through the following technical solutions:
A kind of fault detection method of single-phase intelligent electric energy meter residual amount exception, including single-phase intelligent electric energy meter, it is described
Single-phase intelligent electric energy meter use MCU, display module, metering chip, clock chip, ESAM safety chip, eeprom memory,
Power module；
Wherein the display module, metering chip, clock chip, eeprom memory, ESAM safety chip connect with MCU
It connects；
The metering chip is used to do current sampling, voltage sampling to city's electric terminals and do current sampling to zero curve, and
The current sampling of the current sampling of city's electric terminals, voltage sampling and zero curve is integrated into sample information and is sent to MCU；
Stamp sample information additional time that the clock chip is used to collect for the MCU；
The MCU is analyzed by the sample information for being attached with timestamp and is obtained electricity data；
The residual amount, power purchase are recorded and are led to for storing residual amount, power purchase record by the ESAM safety chip
MCU is crossed to be collected and stored in the eeprom memory；
The eeprom memory is used to store residual amount, electricity data and the power purchase note of single-phase intelligent electric energy meter
It records, stop telegram in reply record；
The power module is connect with the clock chip, and for being MCU, display module, metering chip, clock core
Piece, eeprom memory, the power supply of ESAM safety chip；
The MCU is additionally provided with RS485 communication interface and infrared communication interface, is used for communication with the outside world；
It is further comprising the steps of:
Step A, whether operating status is judged by sample information collected by detection single-phase intelligent electric energy meter MCU first
Normally, step B is then carried out if normal, and basic maintenance directly otherwise is done to the single-phase intelligent electric energy meter；
Step B, the current residual amount of money in single-phase intelligent electric energy meter eeprom memory is read by RS485, power purchase is remembered
Record；
Step C, the single-phase intelligent electric energy meter is restored to public key state, copies back tool reading power meters by data
Residual amount, power purchase record in ESAM safety chip are compared, if the residual amount of the single-phase intelligent electric energy meter, purchase
There is exception in electrographic recording, then the single-phase intelligent electric energy meter is labeled as abnormal electric energy meter and carries out step D；
Step D, if the current residual amount of money in abnormal electric energy meter eeprom memory sports 644XXX.XX member, ESAM
Interior residual amount numerical value is normal, but power purchase record in exist supplement with money rear residual amount sport 644XXX.XX member；Then residual amount
It anomaly occurs in local plug-in card and supplements process with money, and be determined as fault category 1；If current in abnormal electric energy meter eeprom memory
Residual amount sports 949XXX.XX member, and residual amount numerical value is normal in ESAM, but electricity data sports
949XXX.XXkWh, then residual amount, which anomaly occurs in, normally stops telegram in reply process, and is determined as fault category 2.
A kind of test method for single-phase intelligent electric energy meter fault recurrence,
For making single-phase intelligent ammeter reappear fault category 1, single-phase intelligent electric energy meter is restored to public key state, and runs
It in Imax state, is supplemented with money finally by plug-in card repeatedly and carrys out simulated failure environment, until the current residual amount of money sports 644XXX.XX
Member.
For make single-phase intelligent ammeter reappear fault category 2, by single-phase intelligent ammeter is stopped repeatedly send a telegram in reply, simultaneously
Pulse signal or the electromagnetic interference of single-phase intelligent ammeter MCU output are accessed in the SDA line of single-phase intelligent ammeter EEPROM to simulate
Failure environment, until the current residual amount of money sports 949XXX.XX member.Compared with prior art, the present invention having as follows excellent
Point and the utility model has the advantages that
1, a kind of fault detection method of single-phase intelligent electric energy meter residual amount exception of the present invention simplifies complicated detection
Means improve detection efficiency；
2, the present invention chooses 2 kinds of representational intelligent fault electric energy meter samples and is devised according to respective fault characteristic
The experimentation of recurrence of failure；Experimental analysis is carried out by phenomenon of the failure, obtains single-phase intelligent electric energy meter residual amount exception number
It is worth the rule and principle occurred；It can propose scientific and effective solution on this basis, avoid occurring similar event again from now on
Barrier occurs.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is single-phase intelligent electric energy meter functional-block diagram in the present invention；
Fig. 2 is that flow chart occurs for the failure of 1 single-phase intelligent electric energy meter residual amount exception of fault category of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1
As shown in Figure 1, including single-phase intelligent electric energy meter, the main component of the single-phase intelligent electric energy meter includes MCU, display
Module, metering chip, clock chip, ESAM safety chip, eeprom memory, power module；
Wherein the display module, metering chip, clock chip, eeprom memory, ESAM safety chip connect with MCU
It connects；
The metering chip is used to do current sampling, voltage sampling to city's electric terminals and do current sampling to zero curve, and
The current sampling of the current sampling of city's electric terminals, voltage sampling and zero curve is integrated into sample information and is sent to MCU；
Stamp sample information additional time that the clock chip is used to collect for the MCU；
The MCU is analyzed by the sample information for being attached with timestamp and is obtained electricity data；
The residual amount, power purchase are recorded and are led to for storing residual amount, power purchase record by the ESAM safety chip
MCU is crossed to be collected and stored in the eeprom memory；
The eeprom memory is used to store residual amount, electricity data and the power purchase note of single-phase intelligent electric energy meter
It records, stop telegram in reply record；
The power module is connect with the clock chip, and for being MCU, display module, metering chip, clock core
Piece, eeprom memory, the power supply of ESAM safety chip；
The MCU is additionally provided with RS485 communication interface and infrared communication interface, is used for communication with the outside world.
A kind of fault detection method of single-phase intelligent electric energy meter residual amount exception, comprising the following steps:
Step A, whether basic function and the operating status for detecting single-phase intelligent electric energy meter first are normal, then carry out if normal
Otherwise step B directly does basic maintenance to the single-phase intelligent electric energy meter；
Step B, the current residual amount of money, the electricity number in single-phase intelligent electric energy meter eeprom memory are read by RS485
According to, freezing data and power purchase record, stop telegram in reply record；
Step C, the single-phase intelligent electric energy meter is restored to public key state, copies back tool reading power meters by data
Residual amount, power purchase number in ESAM safety chip are compared, if the residual amount of the single-phase intelligent electric energy meter, purchase
There is exception in electric number, then the single-phase intelligent electric energy meter is labeled as abnormal electric energy meter and carries out step D；
Step D carries out Preliminary detection to abnormal electric energy meter:
If the residual amount of D1, abnormal electric energy meter sport 644XXX.XX member, residual amount numerical value is normal in ESAM；It is surplus
The remaining amount of money is normal, but in power purchase logout exist supplement with money rear residual amount sport 644XXX.XX member；Then residual amount is abnormal
Occur to supplement process with money in local plug-in card, and is determined as fault category 1；
If the residual amount of D2, abnormal electric energy meter sport 949XXX.XX member, residual amount numerical value is normal in ESAM；Electricity
Amount and clearing electricity data sport 949XXX.XXkWh, then residual amount, which anomaly occurs in, normally stops telegram in reply process, and determines
For fault category 2.
As shown in Fig. 2, when fault type is fault category 1, the process of detection failure generation are as follows:
1, program is not modified, is directly tested on correction platform using former bug list；
2, electric energy meter is restored to public key state, carries out continuous plug-in card test using electricity charge card is increased；Increasing electricity charge card is
Remaining sum increases the dedicated electricity charge rechargeable card of test of certain number automatically in blocking after local insertion each time；
3, electric energy meter is operated in into Imax state, it is made quickly to generate pulse；
4, setting liquid crystal display parameter is only to show residual amount；
5, constantly insertion increase electricity charge card is supplemented with money, when finding residual amount mutation, suspends plug-in card；
6, the recharge amount of power purchase several times recently is read from serial ports using computer debugging tool software, supplement preceding remaining gold with money
Volume, supplement with money after residual amount.
It is different from phenomenon of the failure reproduction as can be seen that residual amount is abnormal unrelated with the residual amount before recharge amount, power purchase
Constant value is fixed value, and completely the same with the phenomenon of the failure of scene generation.
Through analyzing, the MCU that 1 single-phase intelligent electric energy meter of fault category uses does not have ISO7816 used in ESAM and CPU card
Protocol hardware interface is realized using software analog form, more demanding to ESAM stable operating voltage.When ammeter is filled in plug-in card
Overall Power Consumption increase causes ESAM mains fluctuations during value, and MCU is caused to read ESAM data failure, if MCU continuous 4 times
The failure of ESAM residual amount is read, since electric energy list procedure is there are design defect, program lacks fault-tolerant processing mechanism, directly uses
EEPROM is written as residual amount in the erroneous values 644256.59 (storehouse default number) of default, causes meter display remaining
The amount of money is abnormal.
Embodiment 2
2 single-phase intelligent electric energy meter of fault category can by way of reappearing live residual amount abnormal failure, according to
Ammeter power down record and the discovery of day freezing data, all bug lists have power down record on the day of generation remaining sum exception, in conjunction with
Source code analysis, detection stop the problems of the memory mechanism of EEPROM during telegram in reply.
The experiment concrete operations of design are as follows:
1, simply frequently stop telegram in reply test.
A, ammeter powers on, and resets；
B, power-on and power-off tooling difference power-on and power-off time, electric test above and below lasting ammeter are set；
C, stop ammeter electric test up and down, copy reading remaining sum and electricity are normal；
2, frequently stop telegram in reply test, while carrying out intercom interference.
A, ammeter powers on, and resets；
B, power-on and power-off tooling difference power-on and power-off time, electric test above and below lasting ammeter are set；
C, the different frequency of intercom is set, persistently ammeter is applied and is interfered；
D, stop ammeter power-on and power-off and intercom interference test, copy reading remaining sum and electricity are normal；
3, frequently stop telegram in reply test, while carrying out strong magnetic disturbance.
A, ammeter powers on, and resets；
B, power-on and power-off tooling difference power-on and power-off time, electric test above and below lasting ammeter are set；
C, strong magnetic disturbance persistently is applied to ammeter；
D, stop ammeter power-on and power-off and strong magnetic disturbance test, copy reading remaining sum and electricity are normal；
4, frequently stop telegram in reply test, while the SDA line of EEPROM accesses burst of pulses signal interference.
A, ammeter powers on, and resets；
B, power-on and power-off tooling difference power-on and power-off time, electric test above and below lasting ammeter are set；
C, the SCL of EEPROM, SDA line access burst of pulses coupling clip simultaneously, and burst of pulses device exports (500~1000V, 5K/
100K)；
D, continual interference, table are broken, cisco unity malfunction；
5, frequently stop telegram in reply test, while the interference signal of the SDA line access MCU output of EEPROM.
A, ammeter powers on, and resets；
B, FE0000F5 order is sent to ammeter, write-in 5A (opens built-in interference program)；
C, it is shorted SDA data line and I/O output line, is re-powered；
D, the abundant I/O output line of SDA data line is disconnected when warning light lights (ERR-06 alarm)；
E, FE0000F5 order is sent to ammeter, write-in 00 (closes built-in interference program)；
F, remaining sum is 94967295 in copy reading memory, and electricity is also 94967295 in memory.
In addition, in order to simulate it is extreme under the conditions of disturbed condition, one section of test code, this generation are embedded in ammeter program
Code can export or terminate interference signal according to different external commands, and the output end of this interference signal is ammeter CPU remaining one
I/O mouthfuls a, input terminal is the SDA data line of EEPROM.
Test result shows in frequently stopping telegram in reply test, constantly interferes the I2C bus in EEPROM, can reappear failure
Phenomenon, i.e. remaining sum are 94967295 exceptional values.
Through analyzing, 2 single-phase intelligent electric energy meter of fault category need to be read remaining during stopping telegram in reply from EEPROM backup area
The amount of money is restored.But operating voltage is not yet stable after the power-up for electric energy meter, can't guarantee positive normal open between MCU and EEPROM
Letter, electric energy meter has started to execute telegram in reply reset routine at this time, and EEPROM reading data is caused to fail.When from EEPROM master backup area
It is repeatedly read with secondary backup area after failing, since electric energy list procedure is there are design defect, program lacks fault-tolerant processing mechanism, will
It directly uses the hexadecimal FFFFFFFF of default to resolve to error number 949672.95 to be stored in as residual amount and electric flux
In RAM, when executing residual amount storage next time, EEPROM directly is written into the error value in RAM, electric energy meter is caused to show
Residual amount is abnormal.
In addition, it is worth noting that, the above-mentioned fault recurrence method for fault category 1 and fault category 2 is not only applicable in
In carrying out fault simulating test to the failure ammeter in the present invention, can also single-phase intelligent ammeter to the type carry out it is identical therefore
Hinder simulated experiment, to reappear the failure of fault category 1 and fault category 2, it can for the type single-phase intelligent ammeter into
The testing inspection of the above-mentioned two classes failure of row.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of fault detection method of single-phase intelligent electric energy meter residual amount exception, including single-phase intelligent electric energy meter, the list
Phase intelligent electric energy meter uses ESAM safety chip, eeprom memory, which is characterized in that further comprising the steps of:
Step A, judge operating status whether just by sample information collected by detection single-phase intelligent electric energy meter MCU first
Often, step B is then carried out if normal, and basic maintenance directly otherwise is done to the single-phase intelligent electric energy meter；
Step B, it is read by the communication interface of single-phase intelligent ammeter current surplus in single-phase intelligent electric energy meter eeprom memory
The remaining amount of money, power purchase record；
Step C, the single-phase intelligent electric energy meter is restored to public key state, copies back tool reading power meters ESAM peace by data
Residual amount, power purchase record in full chip are compared, if the residual amount of the single-phase intelligent electric energy meter, power purchase record
There are exceptions, then the single-phase intelligent electric energy meter are labeled as abnormal electric energy meter and carry out step D；
Step D is remained in ESAM if the current residual amount of money in abnormal electric energy meter eeprom memory sports 644XXX.XX member
Remaining amount of money numerical value is normal, but power purchase record in exist supplement with money rear residual amount sport 644XXX.XX member；Then residual amount is abnormal
Occur to supplement process with money in local plug-in card, and is determined as fault category 1；If the current residual in abnormal electric energy meter eeprom memory
The amount of money sports 949XXX.XX member, and residual amount numerical value is normal in ESAM, but electricity data sports 949XXX.XXkWh, then
Residual amount, which anomaly occurs in, normally stops telegram in reply process, and is determined as fault category 2.
2. a kind of fault detection method of single-phase intelligent electric energy meter residual amount exception according to claim 1, feature
It is: when the current residual amount of money in the exception electric energy meter eeprom memory sports 644256.59 yuan, is determined as failure
Classification 1.
3. a kind of fault detection method of single-phase intelligent electric energy meter residual amount exception according to claim 1, feature
It is: when the current residual amount of money in the exception electric energy meter eeprom memory sports 949672.95 yuan, is determined as failure
Classification 2.
4. a kind of fault detection method of single-phase intelligent electric energy meter residual amount exception according to claim 1, feature
Be: the ESAM safety chip is embedded chip.
5. a kind of fault detection method of single-phase intelligent electric energy meter residual amount exception according to claim 1, feature
Be: the eeprom memory uses hexadecimal storage format.
6. a kind of fault detection method of single-phase intelligent electric energy meter residual amount exception according to claim 1, feature
Be: the eeprom memory uses decimal system storage format.
7. a kind of test method for single-phase intelligent electric energy meter fault recurrence, for making single-phase intelligent ammeter reappear fault category
1, it is characterised in that: single-phase intelligent electric energy meter is restored to public key state, and operates in Imax state, finally by plug-in card repeatedly
It supplements with money and carrys out simulated failure environment, until the current residual amount of money sports 644XXX.XX member.
8. a kind of test method for single-phase intelligent electric energy meter fault recurrence, for making single-phase intelligent ammeter reappear fault category
2, it is characterised in that: by being stopped telegram in reply repeatedly to single-phase intelligent ammeter, simultaneously in the SDA line of single-phase intelligent ammeter EEPROM
The pulse signal or electromagnetic interference of access single-phase intelligent ammeter MCU output carry out simulated failure environment, until the current residual amount of money is prominent
Become 949XXX.XX member.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110400422A (en) * | 2019-06-26 | 2019-11-01 | 青岛乾程科技股份有限公司 | A kind of electric energy meter charging method |
| CN112710981A (en) * | 2020-12-31 | 2021-04-27 | 华立科技股份有限公司 | Pulse test and ammeter power-on and power-off reliability test system and method |
| CN113223237A (en) * | 2021-05-08 | 2021-08-06 | 国网宁夏电力有限公司 | Method and system for paying electric charge on line |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900801A (en) * | 2010-07-15 | 2010-12-01 | 田卫华 | Intelligent electric energy meter field test device and test method thereof |
| CN103198420A (en) * | 2013-03-29 | 2013-07-10 | 山东电力集团公司 | Real-time interactive long-distance fee-control management system and method |
| CN103439545A (en) * | 2013-09-09 | 2013-12-11 | 扬州市万泰电器厂有限公司 | Analysis design method for reducing radiation interference of intelligent electric energy meter |
| CN104505936A (en) * | 2014-12-02 | 2015-04-08 | 国家电网公司 | Power data monitoring method and power data monitoring system |
| CN106781057A (en) * | 2017-01-17 | 2017-05-31 | 国网四川省电力公司成都供电公司 | Intelligent electric energy meter supplements the method that fault detection system and detection process supplement failure with money with money |
-
2018
- 2018-11-15 CN CN201811360055.8A patent/CN109212462A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900801A (en) * | 2010-07-15 | 2010-12-01 | 田卫华 | Intelligent electric energy meter field test device and test method thereof |
| CN103198420A (en) * | 2013-03-29 | 2013-07-10 | 山东电力集团公司 | Real-time interactive long-distance fee-control management system and method |
| CN103439545A (en) * | 2013-09-09 | 2013-12-11 | 扬州市万泰电器厂有限公司 | Analysis design method for reducing radiation interference of intelligent electric energy meter |
| CN104505936A (en) * | 2014-12-02 | 2015-04-08 | 国家电网公司 | Power data monitoring method and power data monitoring system |
| CN106781057A (en) * | 2017-01-17 | 2017-05-31 | 国网四川省电力公司成都供电公司 | Intelligent electric energy meter supplements the method that fault detection system and detection process supplement failure with money with money |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110400422A (en) * | 2019-06-26 | 2019-11-01 | 青岛乾程科技股份有限公司 | A kind of electric energy meter charging method |
| CN112710981A (en) * | 2020-12-31 | 2021-04-27 | 华立科技股份有限公司 | Pulse test and ammeter power-on and power-off reliability test system and method |
| CN113223237A (en) * | 2021-05-08 | 2021-08-06 | 国网宁夏电力有限公司 | Method and system for paying electric charge on line |
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