CN103913719B - A kind of method judging single-phase carrier intelligent electric meter mistake power down failure cause - Google Patents
A kind of method judging single-phase carrier intelligent electric meter mistake power down failure cause Download PDFInfo
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Abstract
The invention discloses a kind of method that single-phase carrier intelligent electric meter misses power down failure cause that judges, by detecting Circuit Fault on Secondary Transformer voltage, ammeter load capacity and carrier communication module dynamic power consumption in table, realizing missing power down reason and judging.Described method judges that the device of single-phase carrier intelligent electric meter by mistake power down failure cause realizes by a kind of, described device by three-phase standard source, copy control device, contactor, control module, modulate circuit, load box, PC, direct supply analyser and field working conditions analogue unit and form.The present invention utilizes DSP to achieve the mistake power down fault analysis of single-phase carrier intelligent electric energy meter, the concrete reason of such fault can be caused by accurate analysis, as transformer damage, ammeter load capacity is not enough and communication module dynamic power consumption is excessive, is convenient to analysis and the investigation of fault.The present invention can also simulated field communication environment, detects the dynamic power consumption analyzing single-phase carrier intelligent ammeter intercarrier communication module under on-the-spot actual condition.
Description
Technical field
The present invention relates to a kind of method that single-phase carrier intelligent electric meter misses power down failure cause that judges, belong to Electric Energy Metering Technology field.
Background technology
Power line carrier communication has become a kind of usual way completing concentrator and electric energy meter communication, and the single-phase carrier intelligent electric meter with carrier communication function is also widely used in intelligent grid.Guo Wang incorporated business standard Q/GDW1364-2013 " single-phase intelligent electric energy meter technical manual " specifies: when the voltage terminal voltage of electric energy meter lower than its reference voltage 60% time, ammeter answers power down and record power loss event.But find at the scene: when the voltage terminal voltage of part ammeter is its reference voltage, ammeter still power down occurs, and this phenomenon of the failure not only causes the increase of platform district line loss to bring huge economic loss to electric company, also can cause the generation of metering dispute.
The power down of bug list judges that sampled voltage is taken at the direct current power source voltage place of electric energy meter supply carrier module.The factors such as therefore transformer damage, carrier module power consumption are excessive, electric energy meter load capacity is not enough all can drag down this place's voltage.Time below the power down threshold values that voltage is pulled down to setting, CPU judges ammeter power down, and corresponding interrupt routine in trigger table, the generation of power loss event and end time also have power loss event total degree to be recorded and to be stored in CPU.Miss the fault of power down for single-phase carrier intelligent electric meter, also do not have concrete method and apparatus to judge failure cause at present.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of method that single-phase carrier intelligent electric meter misses power down failure cause that judges, miss the concrete reason of power down fault for discriminatory analysis single-phase carrier electric energy meter, be convenient to investigate fault in time.
In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:
The present invention is analyzed by the dynamic power consumption detecting the alternating voltage of Circuit Fault on Secondary Transformer in tested table, the load capacity of tested table and tested table intercarrier communication module and judges that the reason of power down fault by mistake occurs tested table, and energy simulated field communication environment, the dynamic power consumption of single-phase carrier intelligent ammeter intercarrier communication module under the on-the-spot actual condition of detection analysis; The inventive method judges that single-phase carrier intelligent electric meter misses the device realization of power down failure cause by a kind of.
In table, the transformer of supply carrier communication module power is damaged, and the secondary side voltage of transformer can be caused lower than normal value, and the magnitude of voltage after rectifier bridge is accordingly lower than normal value, and power down fault by mistake occurs ammeter.Can be judged by the alternating voltage detecting this Circuit Fault on Secondary Transformer in tested table to investigate this type of failure cause.
When electric energy meter and concentrator generation carrier communication, because the load capacity of tested table is not enough, its DC power supply voltage can be pulled down to below power down threshold values by the dynamic power consumption of carrier communication module normal consumption, and power down fault by mistake occurs ammeter.Can judge to investigate this type of failure cause by the load capacity detecting electric energy meter.
Ammeter and concentrator are when carrying out carrier communication, and the dynamic power consumption of carrier communication module is crossed conference and its DC power supply voltage is pulled down to below power down threshold values, and power down by mistake occurs ammeter.This type of failure cause can be investigated by the dynamic power consumption detecting tested table intercarrier communication module.
Present invention also offers a kind of device that single-phase carrier intelligent electric meter misses power down failure cause that judges:
This device by three-phase standard source, copy control device, contactor, control module, modulate circuit, load box, PC, direct supply analyser and field working conditions analogue unit form.
Copy control device and carry out carrier communication according to the parameter set and single-phase carrier wave meter, thus complete the collection to related data in ammeter.
Control module is primarily of DSP and A/D module composition.The TMSF2812 chip that DSP adopts, carries out AD conversion by each interchange collected, DC voltage value by AD conversion module, and the data after conversion are carried out Treatment Analysis by DSP again, realize fault analysis and judgement.The magnitude of voltage allowed due to AD conversion module input end is less, therefore by the adjustment of modulate circuit realization to input voltage, and then can be met the input voltage of requirement.DSP, to after Data Management Analysis, exports the low and high level tentaculum that achieves a butt joint by control GPIO pin and closes the control with off state.
The purely resistive resistance that load box is 96 Ω (precision is ± 5%) by several resistance forms, for detecting the load capacity of electric energy meter.
Field working conditions analogue unit comprises: input port, output port, signal attenuator, line of electric force capacitive load simulator, line of electric force inductive load simulator and contactless contactor (K1 and K2).
The parallel connection of signal attenuator, line of electric force capacitive load simulator and line of electric force inductive load simulator is connected between input interface and output interface by contactless contactor K1 and K2.Other a pair contactor KM1 and KM2 is used for controlling resistance case whether access carrier module DC power output end.
Three-phase standard source connects the winding copying transformer in control device and tested ammeter respectively; Control module connects two road modulate circuits; Wherein two input ports on a road are connected in parallel on the transformer secondary winding in tested ammeter; Two, another road input port is connected in the output terminal of tested ammeter rectifier bridge in parallel; Load box is connected the output terminal of tested ammeter rectifier bridge by contactor KM1 with KM2;
PC is connected with direct supply analyser data communication port by USB interface, controls direct supply analyser and reads and record power consumption data; Direct supply analyser ripple communication module is connected, and provides direct supply to it.Ammeter to be connected with carrier communication module by light current interface and both realizing between exchanges data; Field working conditions analogue unit is controlled device with carrier communication module be connected with being copied respectively; Copy control device to be connected with PC by RS232 interface, copy control device by PC control, the time interval of related data and reading in the ammeter that required reading during test is set.
Compared with prior art, the invention has the beneficial effects as follows: the present invention utilizes DSP to achieve the mistake power down fault analysis of single-phase carrier intelligent electric energy meter, the concrete reason of such fault can be caused by accurate analysis, as transformer damage, ammeter load capacity is not enough and communication module dynamic power consumption is excessive, is convenient to analysis and the investigation of fault.The present invention can also simulated field communication environment, detects the dynamic power consumption analyzing single-phase carrier intelligent ammeter intercarrier communication module under on-the-spot actual condition.
Accompanying drawing explanation
Fig. 1 is apparatus structure schematic diagram of the present invention; Fig. 2 is field working conditions analogue unit schematic diagram of the present invention;
Fig. 3 is fault judgment method process flow diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
Be apparatus structure schematic diagram of the present invention shown in Fig. 1, with the related tested ammeter structure division of this device when being detection shown in dotted line, outside dotted line, be depicted as the body construction of device.
Three-phase standard source provides single-phase (three-phase) standard reference alternating voltage needed for single-phase carrier intelligent meter (copying control device), this alternating voltage is converted into less secondary side alternating voltage by the transformer in ammeter, the DC voltage that amplitude is 12V is obtained by rectifier bridge, the carrier module that this DC voltage is ammeter provides direct current to export, and the power loss event of ammeter adopts voltage to be taken at herein.By 7805 stabilivolt voltage stabilizings, obtain being worth the DC voltage being about 5.7V, this voltage becomes by the step-down of diode the direct current that numerical value is 5V, for other funtion part of ammeter provides direct supply.
Take off the carrier module of ammeter, ac voltage is measured at the secondary side of transformer, by the analyzing and processing of DSP, if this end ac voltage (is supplied to voltage and the desirable no-load voltage ratio of transformer of transformer primary side in ammeter lower than setting initial value according to three-phase standard source, set this numerical value and leave certain nargin), then can judge that the mistake power down fault of this ammeter is caused by transformer damage in table.
If DSP has judged that the transformer function in ammeter is normal, then the load capacity of ammeter is tested.Contactor KM1 and KM2 is in closed original state, now at the direct supply place of carrier module, being equivalent to access a resistance is 96 Ω (precision ± 5%) purely resistive resistance, by the analyzing and processing of DSP, if this DC voltage value is not within the scope of (12 ± 1) V, then judge that the mistake power down fault of this ammeter is caused by ammeter load capacity deficiency.
If DSP has judged that the load capacity of ammeter meets the demands, then on tested ammeter, carrier communication module is installed, data type in the tested electric energy meter that need gather and acquisition time interval are set by PC, then according to the parameter of setting, copy control device and start to carry out carrier communication with tested ammeter.Now contactor KM1 and KM2 switches to off-state by closed, DSP carries out analyzing and processing to the direct current power source voltage of carrier module, if this DC voltage is lower than 11V, then judge that the mistake power down fault of this ammeter causes by the dynamic power consumption of carrier communication module is excessive, now the dynamic power consumption under different operating mode of carrier communication module is measured.
By the connection of USB port, PC can control direct supply analyser parameters, and the data of ammeter, by carrier module, through field working conditions analogue unit, to receive and by RS485 data back to PC by copying control device.Change the type of field working conditions analogue unit, corresponding carrier module power can change, and then obtain the actual dynamic power consumption of carrier communication module under this operating mode, namely this power consumption data directly can read from direct supply analyser panel, also can reading the data of direct supply analyser by PC and store, being convenient to the data analysis to collecting.
Fig. 2 is the schematic diagram of field working conditions analogue unit of the present invention.Field working conditions analogue unit comprises: contactless contactor K1 and K2, carrier attenuation device, line of electric force capacitive load simulator, line of electric force inductive load simulator.
The parallel connection of carrier attenuation device, line of electric force capacitive load simulator and line of electric force inductive load simulator is connected between input interface and output interface by switch.Contactless contactor K1 and K2 is used for selecting the required field working conditions simulated.Line of electric force capacitive load simulator is used for simulating the field working conditions when the load of actual power line equivalent electrical circuit is capacitive; Line of electric force inductive load simulator is used for simulating the field working conditions when the load of actual power line equivalent electrical circuit is in perception; The attenuation coefficient of signal attenuator should be adjustable, be used for analog carrier signal through in various degree decay after field working conditions.
Be fault judgment method process flow diagram of the present invention shown in Fig. 3, its concrete steps are as follows:
Step 1: three-phase standard source boosts, to copying control device and tested single-phase carrier intelligent meter provides the reference voltage of standard;
Step 2: detect the Circuit Fault on Secondary Transformer voltage in voltage sample loop in ammeter, if this magnitude of voltage is lower than initial set value, then judges that power down fault is caused by transformer damage in ammeter by mistake;
Step 3: if the magnitude of voltage in step 2 is higher than initial set value, then contactor KM1 and KM2 closes;
Step 4: utilize direct supply analyser to detect the direct current power source voltage that electric energy meter is supplied to carrier module, if this magnitude of voltage is not within the scope of (12 ± 1) V, then judges that power down fault is caused by ammeter load capacity deficiency by mistake;
Step 5: if magnitude of voltage is within the scope of (12 ± 1) V in step 4, then contactor KM1 and KM2 disconnects;
Step 6: copy control device and carry out carrier communication according to the parameter set and electric energy meter;
Step 7: direct current power source voltage electric energy meter being supplied to carrier module detects, if this magnitude of voltage is lower than 11V, then judges that power down fault causes by carrier communication module dynamic power consumption is excessive by mistake;
Step 8: enter detected carrier communication module dynamic power consumption process of measurement, under measuring Different field operating mode, the dynamic power consumption of carrier communication module, preserves data by PC record;
Step 9: in step 7, if the magnitude of voltage recorded is not less than 11V, then three-phase voltage source step-down, test terminates.
Judge by the present invention is a kind of the method that single-phase carrier intelligent electric meter misses power down failure cause, the concrete analysis of causes and judgement can be carried out for the mistake power down fault of single-phase carrier intelligent electric energy meter, and carrier communication module dynamic power consumption is detected.Not only ensure that the operation accurately and reliably of electric energy meter, it also avoid the metering dispute between electric company and Electricity customers.
Claims (2)
1. one kind judges that single-phase carrier intelligent electric meter misses the method for power down failure cause, it is characterized in that, described method is analyzed by the dynamic power consumption detecting the alternating voltage of Circuit Fault on Secondary Transformer in tested table, the load capacity of tested table and tested table intercarrier communication module and is judged that the reason of power down fault by mistake occurs tested table, and energy simulated field communication environment, the dynamic power consumption of single-phase carrier intelligent ammeter intercarrier communication module under the on-the-spot actual condition of detection analysis; Described method judges that single-phase carrier intelligent electric meter misses the device realization of power down failure cause by a kind of;
Described device by three-phase standard source, copy control device, contactor, control module, modulate circuit, load box, PC, direct supply analyser and field working conditions analogue unit form; Three-phase standard source connects the winding copying transformer in control device and tested ammeter respectively; Control module connects two road modulate circuits; Wherein two input ports on a road are connected in parallel on the transformer secondary winding in tested ammeter; Two, another road input port is connected in the output terminal of tested ammeter rectifier bridge in parallel; Load box is connected the output terminal of tested ammeter rectifier bridge by contactor KM1 with KM2; PC is connected with direct supply analyser data communication port by USB interface, controls direct supply analyser and reads and record power consumption data; Direct supply analyser is connected with carrier communication module, provides direct supply to it; Ammeter to be connected with carrier communication module by light current interface and both realizing between exchanges data; Field working conditions analogue unit is controlled device with carrier communication module be connected with being copied respectively; Copy control device to be connected with PC by RS232 interface, copy control device by PC control, the time interval of related data and reading in the ammeter that required reading during test is set.
2. a kind of method that single-phase carrier intelligent electric meter misses power down failure cause that judges according to claim 1, it is characterized in that, described field working conditions analogue unit comprises input port, output port, carrier attenuation device, line of electric force capacitive load simulator, line of electric force inductive load simulator and contactless contactor K1 and K2, and the parallel connection of carrier attenuation device, line of electric force capacitive load simulator and line of electric force inductive load simulator is connected between input interface and output interface by contactless contactor K1 and K2.
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| CN108120951B (en) * | 2018-02-01 | 2024-04-02 | 国网江西省电力有限公司电力科学研究院 | Cost control intelligent electric energy meter capable of realizing built-in switch fault detection |
| CN114114130B (en) * | 2021-09-18 | 2024-05-14 | 宁夏隆基宁光仪表股份有限公司 | Electric energy meter testing method, system and device based on simulation site actual load |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201449443U (en) * | 2009-05-27 | 2010-05-05 | 无锡和晶科技股份有限公司 | Power-off detection circuit of isolated fly-back switch power supply |
| CN101770007A (en) * | 2008-12-31 | 2010-07-07 | 深圳市科陆电子科技股份有限公司 | Electric energy meter test system and method thereof |
| CN101858966A (en) * | 2010-05-10 | 2010-10-13 | 珠海市科荟电器有限公司 | Simulation detection system of electric energy meter data acquisition device |
| CN101900760A (en) * | 2010-06-25 | 2010-12-01 | 洪金文 | Electricity meter and power source applicable to same |
| CN201765273U (en) * | 2010-06-25 | 2011-03-16 | 洪金文 | Ammeter and power supply for same |
| CN201828602U (en) * | 2010-10-27 | 2011-05-11 | 深圳市振邦实业有限公司 | Power failure detection circuit with low power consumption |
| CN202929194U (en) * | 2012-09-27 | 2013-05-08 | 中国电力科学研究院 | Calibrating device for dc electric energy meter |
| CN103616660A (en) * | 2013-12-02 | 2014-03-05 | 国家电网公司 | Power-down processing reliability test device and method for intelligent ammeters in interference environment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6981173B2 (en) * | 2001-09-28 | 2005-12-27 | Hewlett-Packard Development Company, L.P. | Redundant memory sequence and fault isolation |
| TWI465896B (en) * | 2009-05-14 | 2014-12-21 | Novatek Microelectronics Corp | Power supply circuit and method therefore |
-
2014
- 2014-04-18 CN CN201410157463.9A patent/CN103913719B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101770007A (en) * | 2008-12-31 | 2010-07-07 | 深圳市科陆电子科技股份有限公司 | Electric energy meter test system and method thereof |
| CN201449443U (en) * | 2009-05-27 | 2010-05-05 | 无锡和晶科技股份有限公司 | Power-off detection circuit of isolated fly-back switch power supply |
| CN101858966A (en) * | 2010-05-10 | 2010-10-13 | 珠海市科荟电器有限公司 | Simulation detection system of electric energy meter data acquisition device |
| CN101900760A (en) * | 2010-06-25 | 2010-12-01 | 洪金文 | Electricity meter and power source applicable to same |
| CN201765273U (en) * | 2010-06-25 | 2011-03-16 | 洪金文 | Ammeter and power supply for same |
| CN201828602U (en) * | 2010-10-27 | 2011-05-11 | 深圳市振邦实业有限公司 | Power failure detection circuit with low power consumption |
| CN202929194U (en) * | 2012-09-27 | 2013-05-08 | 中国电力科学研究院 | Calibrating device for dc electric energy meter |
| CN103616660A (en) * | 2013-12-02 | 2014-03-05 | 国家电网公司 | Power-down processing reliability test device and method for intelligent ammeters in interference environment |
Non-Patent Citations (1)
| Title |
|---|
| 用掉电方式解决监测仪器的功耗问题;冯苍旭等;《水文地质工程地质》;20000331(第03期);第57-58页 * |
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