CN103616660A - Power-down processing reliability test device and method for intelligent ammeters in interference environment - Google Patents
Power-down processing reliability test device and method for intelligent ammeters in interference environment Download PDFInfo
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- CN103616660A CN103616660A CN201310631198.9A CN201310631198A CN103616660A CN 103616660 A CN103616660 A CN 103616660A CN 201310631198 A CN201310631198 A CN 201310631198A CN 103616660 A CN103616660 A CN 103616660A
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Abstract
The invention discloses an automatic power-down processing reliability test device and method for intelligent ammeters in an interference environment. The automatic power-down processing reliability test device comprises an automatic test controller, an inductive load switching device and at least two ammeters to be tested, wherein the automatic test controller is computer equipment which automatic testing software is installed in and is provided with a communication interface. The automatic power-down processing reliability test method comprises the following steps: an input power supply inside a switching device is switched off by controlling the inductive load switching device, a power supply of a paralleling reactor inside the switching device is switched off while the ammeters to be tested which are connected to a switching device voltage loop in parallel are powered down, an inductive load switching interference is generated in a simulated mode, and the inductive load switching interference is output to the voltage loop of the ammeters to be tested through a voltage interface; communication with the ammeters to be tested is conducted through an RS485 interface, operating data of the ammeters to be tested before being powered down and operating data of the ammeters to be tested after being powered up again for operation are detected, so that whether power-down processing of the intelligent ammeters to be tested under the inductive load switching interference is normal is judged, an assessment of the power-down processing reliability of the intelligent ammeters under the interference is realized, and faults are prevented from happening.
Description
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Technical field
The present invention relates to a kind of intelligent electric energy meter and at inductive load, switch the automatic test approach of power down process reliability under interference environment, belong to intelligent electric energy meter detection technique field.
Background technology
Intelligent electric energy meter at the scene in linked network by being subject to electric power loop, the RS485 communication loop of the effect of various interference stress, particularly electric energy meter, be the main thoroughfare that various interference enter electric energy meter logic card.Although electric energy meter electric source and RS485 mouth have isolating transformer or opto-electronic conversion chip to isolate conventionally, but owing to having distributed capacitance and coupling inductance, the impulse disturbances that some rising edges are very steep is easy to cross these isolation by distributed capacitance and coupling inductance, when impulse disturbances enters electric energy meter logical circuit, electric energy meter can produce various unexpected consequences, as chaotic in clock entanglement, loss of data, internal storage data, even crash etc.
In electrical network, when switch, relay, contactor etc. suit, inductive load is carried out to switching and can cause interference, this interference has that pulse occurs in groups, waveform rise time is short, amplitude and repetition frequency high, and its spectrum distribution is wider simultaneously, and digital circuit is more responsive to it.A large number of experiments show that, this interference can cause intelligent electric energy meter software to break down to a certain extent, as program confusion, loss of data etc.
When there is power failure situation in electrical network, intelligent electric energy meter externally fed stops, the MCU of intelligent electric energy meter will receive the power-off signal that in table, other hardware circuits produce, produce an interruption, intelligent electric energy meter software enters power down process flow process according to the interruption receiving, to internal memory chip, write relevant service data and preserve, then enter low power operation state, rely on internal cell power supply.At electrical network, again power, intelligent electric energy meter recovers after externally fed, and intelligent electric energy meter software rejuvenation normally moves, and the service data of storing when internal memory chip reads last time power down is as the data basis of reruning.If intelligent electric energy meter is interfered when power down, may causes power-off signal or storage data to occur abnormal, thereby cause intelligent electric energy meter operation to be broken down.Because this interference is uncertain on the impact of intelligent electric energy meter power down, the probability that this fault occurs is very low, by general detection method, is difficult to detect.Once but fault appearance, the consequence causing is unpredictable, and fault analysis is afterwards also very difficult.Therefore it is necessary intelligent electric energy meter being taked to the multisample reliability that repeatedly method of repeated test detects its power down process under interference environment.
Summary of the invention
For the deficiency existing in prior art, the object of the invention is subject to inductive load and switches interference while being to provide a kind of simulated field intelligent electric energy meter power down, to being no less than two intelligent electric energy meters, carry out repeatedly revision test simultaneously, by detecting electric energy meter service data, automatic testing equipment and the method thereof of judgement intelligent electric energy meter power down process reliability under disturbing.
To achieve these goals, the present invention realizes by the following technical solutions:
The proving installation of power down process reliability under a kind of intelligent electric energy meter interference environment, it is characterized in that, it comprises the automatic test controller for detection of intelligent electric energy meter power down process reliability under inductive load switching interference environment, inductive load switching device shifter and be no less than two by intelligence inspection electric energy meters, described automatic test controller is connected with inductive load switching device shifter by the first communication interface, described automatic test controller is connected with tested intelligent electric energy meter by the second communication interface, service data while re-powering operation by detecting after the service data of tested intelligent electric energy meter before power down and power down, judge that whether tested intelligent electric energy meter power down process under inductive load switching is disturbed is normal, described inductive load switching device shifter is in parallel with tested intelligent electric energy meter by voltage interface, for simulating, produces inductive load switching interference, outputs in the voltage circuit of tested intelligent electric energy meter by voltage interface.
Described inductive load switching device shifter device comprises the Programmable Logic Controller of the shunt reactor of analog electrical perception load, the vacuum A. C. contactor of controlling shunt reactor and tested intelligent electric energy meter input power and control vacuum A. C. contactor break-make; A.C. contactor and the shunt reactor respectively tested intelligent electric energy meter parallel with one another with voltage circuit are connected in series, described A.C. contactor and shunt reactor are connected in parallel, described Programmable Logic Controller communicates by the first communication interface and automatic test controller, receive the order that automatic test controller sends, by the order of automatic test controller, control the power supply that vacuum A. C. contactor is switched on or switched off tested intelligent electric energy meter and shunt reactor.
As priority scheme, described the first communication interface is RS232 or TCP/IP interface.
As priority scheme, described the second communication interface is RS232 interface.
The method of testing of power down process reliability under a kind of intelligent electric energy meter interference environment that utilizes above-mentioned proving installation, it is characterized in that, it comprises that detecting intelligent electric energy meter switches automatic test controller, the inductive load switching device shifter of power down process reliability under interference environment and be no less than two tested electric energy meters at inductive load, automatic test controller is connected with inductive load switching device shifter by the first communication interface, and is connected with tested intelligent electric energy meter by the second communication interface; Inductive load switching device shifter is in parallel with tested intelligent electric energy meter by voltage interface; Described method of testing comprises the steps:
(1) simulation produces inductive load switching interference; Automatic test controller cuts off the input power in switching device shifter by controlling inductive load switching device shifter, to when being connected in parallel on the tested electric energy meter power down on inductive load switching device shifter voltage circuit, disconnect a power supply in inductive load switching device shifter, simulation produces inductive load and switches interference, by voltage interface, output in the voltage circuit of tested intelligent electric energy meter, the power-off signal of tested intelligent electric energy meter and storage data are exerted an influence;
(2) judge that whether tested intelligent electric energy meter power down process under inductive load switching is disturbed is normal, automatic test controller communicates by the second communication interface and tested electric energy meter, and contrast detection by the service data detecting while re-powering operation after the service data of tested intelligent electric energy meter before power down and power down, judge that whether tested intelligent electric energy meter power down process under inductive load switching is disturbed is normal, if intelligent electric energy meter service data power-down operation front and back numerical value change on carrying out detected, surpassed setting threshold values, be judged to be normal, otherwise it is undesired to be judged to be, thereby intelligent electric energy meter is switched to power down process reliability under interference environment at inductive load and make evaluation,
(3), by automatically repeating step N time (this setting value can be done corresponding change according to testing requirements) of (1)-(2), complete and many intelligent electric energy meters are switched to the detection of power down process reliability under interference environment at inductive load.
In described step (1), the power supply that in described inductive load switching device shifter, a power supply is shunt reactor.
In described step (1), Programmable Logic Controller communicates by built-in RS232 or TCP/IP interface and automatic test controller, receive the order that automatic test controller sends, by the order of automatic test controller, control the power supply that vacuum A. C. contactor is switched on or switched off tested intelligent electric energy meter and shunt reactor.
The present invention is by proving installation and method thereof, during by the power down of simulated field intelligent electric energy meter, be subject to inductive load and switch interference, to being no less than two intelligent electric energy meters, carry out repeatedly revision test simultaneously, by detecting electric energy meter service data, judgement intelligent electric energy meter power down process reliability under disturbing, realize the assessment of intelligent electric energy meter power down process reliability under disturbing, avoided the generation of fault.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, describe the present invention in detail;
Fig. 1 is the structured flowchart of the proving installation of power down process reliability under intelligent electric energy meter interference environment of the present invention;
Fig. 2 is process chart of the present invention;
Fig. 3 is the control principle drawing of inductive load switching device shifter of the present invention
embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.
As can be seen from Figure 1, under the present embodiment intelligent electric energy meter interference environment, the proving installation of power down process reliability comprises that detecting intelligent electric energy meter switches automatic test controller, the inductive load switching device shifter of power down process reliability under interference environment and be no less than two intelligent electric energy meters at inductive load.Its implementation is that automatic test controller passes through RS232 or TCP/IP interface is connected with inductive load switching device shifter, by RS485 interface be no less than two tested intelligent electric energy meters and be connected; Tested electric energy meter is parallel on inductive load switching device shifter voltage circuit by voltage interface.
As can be seen from Figure 2, the automatic test controller of the present embodiment is, at controller CPU, the automatic testing software that detects intelligent electric energy meter power down process reliability under inductive load switching interference environment is installed, utilize the method for realization test of the automatic testing software of said apparatus the present embodiment to be: first, first automatic test controller is switched on power the shunt reactor in tested intelligent electric energy meter and inductive load switching device shifter is powered on by control inductive load switching device shifter, by RS485 mouth, examine and determine and record every service data 1 of tested intelligent electric energy meter, comprise clock, all kinds of electric quantity datas etc.
Then, control inductive load switching device shifter and cut off input power, to shunt reactor and the power down simultaneously of tested intelligent electric energy meter, control again inductive load switching device shifter and switch on power the shunt reactor in tested intelligent electric energy meter and inductive load switching device shifter is powered on, by RS485 mouth, examine and determine and record every service data 2 of tested intelligent electric energy meter.
Finally, service data 1 and service data 2 are contrasted, judge tested intelligent electric energy meter power down process under disturbing line item of whether normally going forward side by side, decision method is: if intelligent electric energy meter service data power-down operation front and back numerical value change on carrying out detected, surpassed setting threshold values, be judged to be normal, otherwise be judged to be undesired.Above detecting step can rerun automatically according to detecting needs or testing result.
As shown in Figure 3, the present embodiment, inductive load switching device shifter is mainly comprised of the Programmable Logic Controller PLC of the shunt reactor L of analog electrical perception load, the vacuum A. C. contactor K that controls shunt reactor L and tested intelligent electric energy meter input power, control vacuum A. C. contactor K break-make.PLC communicates by built-in RS232 or TCP/IP interface and automatic test controller, receive the order that automatic test controller sends, by the order of automatic test controller, control the power supply that vacuum A. C. contactor K is switched on or switched off tested intelligent electric energy meter and shunt reactor.Programmable Logic Controller PLC can guarantee the stable operation of switching device shifter, is not easy to be subject to external interference, and what energy Reliable guarantee detected carries out for a long time; Adopt vacuum A. C. contactor to disconnect shunt reactor and can produce the impulse disturbances that obvious rising edge is very steep at tested electrical energy meter electricity hydraulic circuit, and can exert an influence to many tested electric energy meters, realize the long-time repeatedly object of revision test of multisample.
The present invention is by proving installation and method thereof, during by the power down of simulated field intelligent electric energy meter, be subject to inductive load and switch interference, to being no less than two intelligent electric energy meters, carry out repeatedly revision test simultaneously, by detecting electric energy meter service data, judgement intelligent electric energy meter power down process reliability under disturbing, realize the assessment of intelligent electric energy meter power down process reliability under disturbing, avoided the generation of fault.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (10)
1. the proving installation of power down process reliability under an intelligent electric energy meter interference environment, it is characterized in that, it comprises the automatic test controller for detection of intelligent electric energy meter power down process reliability under inductive load switching interference environment, inductive load switching device shifter and be no less than two by intelligence inspection electric energy meters, described automatic test controller is connected with inductive load switching device shifter by the first communication interface, described automatic test controller is connected with tested intelligent electric energy meter by the second communication interface, service data while re-powering operation by detecting after the service data of tested intelligent electric energy meter before power down and power down, judge that whether tested intelligent electric energy meter power down process under inductive load switching is disturbed is normal, described inductive load switching device shifter is in parallel with tested intelligent electric energy meter by voltage interface, for simulating, produces inductive load switching interference, outputs in the voltage circuit of tested intelligent electric energy meter by voltage interface.
2. proving installation according to claim 1, it is characterized in that, described inductive load switching device shifter device comprises the Programmable Logic Controller of the shunt reactor of analog electrical perception load, the vacuum A. C. contactor of controlling shunt reactor and tested intelligent electric energy meter input power and control vacuum A. C. contactor break-make; A.C. contactor and the shunt reactor respectively tested intelligent electric energy meter parallel with one another with voltage circuit are connected in series, described A.C. contactor and shunt reactor are connected in parallel, described Programmable Logic Controller communicates by the first communication interface and automatic test controller, receive the order that automatic test controller sends, by the order of automatic test controller, control the power supply that vacuum A. C. contactor is switched on or switched off tested intelligent electric energy meter and shunt reactor.
3. proving installation according to claim 1 and 2, is characterized in that, described the first communication interface is RS232 or TCP/IP interface.
4. proving installation according to claim 1 and 2, is characterized in that, described the second communication interface is RS232 interface.
5. the method for testing of power down process reliability under an intelligent electric energy meter interference environment, it is characterized in that, it comprises that detecting intelligent electric energy meter switches automatic test controller, the inductive load switching device shifter of power down process reliability under interference environment and be no less than two tested electric energy meters at inductive load, automatic test controller is connected with inductive load switching device shifter by the first communication interface, and is connected with tested intelligent electric energy meter by the second communication interface; Inductive load switching device shifter is in parallel with tested intelligent electric energy meter by voltage interface; Described method of testing comprises the steps:
(1) simulation produces inductive load switching interference; Automatic test controller cuts off the input power in switching device shifter by controlling inductive load switching device shifter, to when being connected in parallel on the tested electric energy meter power down on inductive load switching device shifter voltage circuit, disconnect a power supply in inductive load switching device shifter, simulation produces inductive load and switches interference, by voltage interface, output in the voltage circuit of tested intelligent electric energy meter, the power-off signal of tested intelligent electric energy meter and storage data are exerted an influence;
(2) judge that whether tested intelligent electric energy meter power down process under inductive load switching is disturbed is normal, automatic test controller communicates by the second communication interface and tested electric energy meter, and contrast detection by the service data detecting while re-powering operation after the service data of tested intelligent electric energy meter before power down and power down, judge that whether tested intelligent electric energy meter power down process under inductive load switching is disturbed is normal, if intelligent electric energy meter service data power-down operation front and back numerical value change on carrying out detected, surpassed setting threshold values, be judged to be normal, otherwise it is undesired to be judged to be, thereby intelligent electric energy meter is switched to power down process reliability under interference environment at inductive load and make evaluation,
(3), by automatically repeating step N time (this setting value can be done corresponding change according to testing requirements) of (1)-(2), complete and many intelligent electric energy meters are switched to the detection of power down process reliability under interference environment at inductive load.
6. method of testing according to claim 5, it is characterized in that, described inductive load switching device shifter device comprises the Programmable Logic Controller of the shunt reactor of analog electrical perception load, the vacuum A. C. contactor of controlling shunt reactor and tested intelligent electric energy meter input power and control vacuum A. C. contactor break-make; A.C. contactor and the shunt reactor respectively tested intelligent electric energy meter parallel with one another with voltage circuit are connected in series, described A.C. contactor and shunt reactor are connected in parallel, and described Programmable Logic Controller communicates by the first communication interface and automatic test controller.
7. method of testing according to claim 6, is characterized in that, in described step (1), and the power supply that described inductive load switching device shifter internal electric source is shunt reactor.
8. according to the method for testing described in claim 5 to 7 any one, it is characterized in that, described the first communication interface is RS232 or TCP/IP interface.
9. according to the proving installation described in claim 5 to 7 any one, it is characterized in that, described the second communication interface is RS232 interface.
10. method of testing according to claim 7, it is characterized in that, in described step (1), Programmable Logic Controller communicates by built-in RS232 or TCP/IP interface and automatic test controller, receive the order that automatic test controller sends, by the order of automatic test controller, control the power supply that vacuum A. C. contactor is switched on or switched off tested intelligent electric energy meter and shunt reactor.
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| CN103913719A (en) * | 2014-04-18 | 2014-07-09 | 国家电网公司 | Method for judging mistaken powering-down fault causes of single-phase carrier intelligent electric meter |
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| CN105425202A (en) * | 2015-12-22 | 2016-03-23 | 国网天津宝坻供电有限公司 | Intelligent electric energy meter voltage jitter simulation test device and test method |
| CN105929356A (en) * | 2016-05-13 | 2016-09-07 | 威胜集团有限公司 | Method for detecting performance of intelligent electric energy meter under power-on and power-off conditions |
| CN106019204A (en) * | 2016-06-01 | 2016-10-12 | 国网河北省电力公司电力科学研究院 | Electric energy meter automatic verification assembly line epitope fault alarming and positioning method |
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| CN106019204B (en) * | 2016-06-01 | 2019-09-27 | 国网河北省电力公司电力科学研究院 | Electric energy meter automatic verification assembly line epitope fault alarming and positioning method |
| CN112882454A (en) * | 2021-01-11 | 2021-06-01 | 阳光电源股份有限公司 | Road spectrum testing method, system and computer readable storage medium |
| CN112882454B (en) * | 2021-01-11 | 2022-05-24 | 阳光电源股份有限公司 | Road spectrum testing method, system and computer readable storage medium |
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