CN102830326A - Method and system for wire checking of wireless metering secondary circuit - Google Patents
Method and system for wire checking of wireless metering secondary circuit Download PDFInfo
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- CN102830326A CN102830326A CN2011101627539A CN201110162753A CN102830326A CN 102830326 A CN102830326 A CN 102830326A CN 2011101627539 A CN2011101627539 A CN 2011101627539A CN 201110162753 A CN201110162753 A CN 201110162753A CN 102830326 A CN102830326 A CN 102830326A
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Abstract
The invention provides a method and a system for wire checking of a wireless metering secondary circuit, and is used for solving the problems of unreliable judgment and low efficiency because a manual judgment manner is adopted for judging wire misconnection of a primarily installed electric energy meter in the metering secondary circuit. The method comprises the steps of: injecting an excitation signal to a leading-out terminal of a mutual inductor in the secondary circuit; collecting the excitation signal of the leading-in terminal of the electric energy meter in the secondary circuit to the ground and the excitation signal of the leading-out terminal of the electric energy meter to the ground; carrying out signal intensity comparison on the excitation signal of the leading-in terminal of the electric energy meter to the ground and the excitation signal of the leading-out terminal of the electric energy meter to the ground to obtain a signal intensity comparison result; and determining the polarity of the mutual inductor in the secondary circuit according to the signal intensity comparison result. By adopting the technical scheme of the invention, the accuracy and efficiency for judging the wire misconnection of the primarily installed electric energy meter are favorably improved.
Description
Technical field
The present invention relates to a kind of wireless metering secondary nuclear line method and system.
Background technology
Often wrong is from the lead of current transformer, voltage transformer (VT) easily when at present in metering secondary, electric energy meter being installed, and typical situation has that the turnover line of current transformer connects instead, the lead of the separate wrong of lead, current transformer and the voltage transformer (VT) of current transformer is obscured etc.
In the prior art; Because the installation of electric energy meter is in power down mode; Can't use equipment such as tester to carry out error connection differentiates; Usually the lead that adopts an on-off type alarming horn of connecting with battery to discern from mutual inductor is electric current leading-out terminal or return terminal, and listens the size of speaker sound to make differentiation through ear.
According to above-mentioned way of the prior art, exist under power down mode the low and inefficient problem of judgement reliability to the wiring of first dress electric energy meter.
In the prior art, artificial judgment mode is adopted in the judgement of the first dress electric energy meter error connection in the metering secondary, cause judging unreliable and inefficient problem,, do not propose effective solution at present as yet for this problem.
Summary of the invention
Fundamental purpose of the present invention provides a kind of wireless metering secondary nuclear line method and system; To solve in the prior art artificial judgment mode is adopted in the judgement of the first dress electric energy meter error connection in the metering secondary, cause judging unreliable and inefficient problem.
In order to address the above problem, according to an aspect of the present invention, a kind of wireless metering secondary nuclear line method is provided.
The method of wireless metering secondary nuclear line of the present invention comprises: the leading-out terminal of mutual inductor injects pumping signal in secondary circuit; Gather the end of incoming cables pumping signal over the ground and the leading-out terminal pumping signal over the ground of electric energy meter of electric energy meter in the secondary circuit; It is relatively strong and weak that the leading-out terminal pumping signal over the ground of the end of incoming cables of electric energy meter pumping signal and electric energy meter is over the ground carried out signal, obtains the strong and weak comparative result of signal; Confirm the polarity of mutual inductor in the secondary circuit according to the strong and weak comparative result of signal.
Further, comprise the unique data code of representing mutual inductor in the pumping signal.
Further; It is relatively strong and weak that the leading-out terminal pumping signal over the ground of the end of incoming cables of electric energy meter pumping signal and electric energy meter is over the ground carried out signal, obtains also comprising after the strong and weak comparative result of signal: parse the data code in the pumping signal that signal is strong in the strong and weak comparative result of signal.
Further, the data code that parses in the pumping signal that signal is strong in the strong and weak comparative result of signal also comprises afterwards: the classification of confirming mutual inductor according to the data code that parses.
Further, the data code that parses in the pumping signal that signal is strong in the strong and weak comparative result of signal also comprises afterwards: confirm the separate of mutual inductor according to the data code that parses.
Further, mutual inductor is current transformer or voltage transformer (VT).
In order to address the above problem, according to a further aspect in the invention, a kind of wireless metering secondary nuclear wire system is provided.
Wireless metering secondary nuclear wire system of the present invention comprises: the pumping signal injection device is used for injecting pumping signal at the leading-out terminal of secondary circuit mutual inductor; The pumping signal acquisition module, the end of incoming cables pumping signal over the ground and the leading-out terminal pumping signal over the ground of electric energy meter that are used for gathering the secondary circuit electric energy meter; Pumping signal is module relatively, and it is relatively strong and weak that the end of incoming cables pumping signal over the ground and the leading-out terminal pumping signal over the ground of electric energy meter of electric energy meter are carried out signal, obtains the strong and weak comparative result of signal; Polarity determination module is confirmed the polarity of mutual inductor in the secondary circuit according to the strong and weak comparative result of signal.
Further, system also comprises: the data code parsing module is used for parsing the data code in the strong pumping signal of the strong and weak comparative result signal of signal.
Further, system also comprises: the classification determination module of mutual inductor is used for the classification according to the data code judgement mutual inductor that is parsed.
Further, system also comprises: the classification determination module of mutual inductor is used for judging the separate of mutual inductor according to the data code that is parsed.
According to technical scheme of the present invention; Through the leading-out terminal of mutual inductor in the secondary circuit is injected pumping signal, gather after the leading-out terminal pumping signal over the ground of end of incoming cables pumping signal over the ground and electric energy meter of electric energy meter in the secondary circuit that it is carried out signal is relatively strong and weak, obtain signal power comparative result; Confirm this method of the polarity of mutual inductor at last according to comparative result; Through computer realization, need not extra wiring, speed is fast and accurate rate is high; Simultaneously can according to the data code in the pumping signal to separate and the classification of mutual inductor realize fast and automatically, judgement accurately, and can realize that multichannel differentiates simultaneously.
Description of drawings
Figure of description is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the line synoptic diagram according to the wireless metering secondary nuclear secondary circuit that line method detected of the embodiment of the invention;
Fig. 2 is the process flow diagram according to the key step of the wireless metering secondary nuclear line method of the embodiment of the invention; And
Fig. 3 is the synoptic diagram according to the main modular of the wireless metering secondary nuclear wire system of the embodiment of the invention.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
Fig. 1 is the line synoptic diagram according to the wireless metering secondary nuclear secondary circuit that line method detected of the embodiment of the invention, and preferably, Fig. 1 shows the connection mode of secondary circuit of the current transformer of single-item electric energy meter.
As shown in Figure 1, the end of incoming cables c of electric energy meter 11 is connected with return terminal b with the leading-out terminal a of current transformer 12 respectively through lead 13 with leading-out terminal d.
Wireless metering secondary nuclear line method of the present invention can also detect the line of the secondary circuit of the voltage transformer (VT) of single-item electric energy meter, and the line of the secondary circuit of the current transformer of heterogeneous electric energy meter or voltage transformer (VT) is detected.
Fig. 2 is that detecting with the line to the secondary circuit shown in Fig. 1 is example according to the process flow diagram of the key step of the wireless metering secondary nuclear line method of the embodiment of the invention, introduces wireless metering secondary nuclear line method key step of the present invention in detail.
As shown in Figure 2, this method mainly comprises the steps:
Step S22: the leading-out terminal a of current transformer 12 injects pumping signal in secondary circuit.
In the present embodiment, can adopt signal excitation equipment to inject pumping signal at the leading-out terminal a of current transformer in secondary circuit 12, this pumping signal includes the unique data code of representing current transformer 12.
Step S24: the end of incoming cables c pumping signal over the ground and the leading-out terminal d pumping signal over the ground of electric energy meter of gathering electric energy meter 11 in the secondary circuit.
In the present embodiment, the collection of pumping signal and processing all can be carried out through the wiring identification equipment that is arranged on electric energy meter 11 1 sides.
Step S26: it is relatively strong and weak that the leading-out terminal d pumping signal over the ground of the end of incoming cables c of electric energy meter 11 pumping signal and electric energy meter 11 is over the ground carried out signal, obtains the strong and weak comparative result of signal.
Step S28: the polarity of confirming current transformer 12 in the secondary circuit according to the strong and weak comparative result of signal; Be signal is strong in the strong and weak comparative result of signal a end corresponding be the leading-out terminal a of current transformer 12; That the end a little less than the signal is corresponding is current transformer 12 return terminal b, thereby judges the polarity of current transformer 12.
Owing to include the unique data code of represent current transformer 12 in the pumping signal in step S22, step S26 can also judge the classification of current transformer 12 and separate, specific as follows afterwards:
1) parses data code in the pumping signal that signal is strong in the strong and weak comparative result of signal;
2) confirm the classification of current transformer 12 and separate according to data code, promptly pumping signal is from which current transformer.
For voltage transformer (VT), then judge pumping signal from which voltage transformer (VT) according to data code, whether can also judge between current transformer and the voltage transformer (VT) error connection.Can also judge the separate of current transformer place for multinomial electric energy meter.
For three-phase three-wire electric energy meter, can on current transformer or voltage transformer (VT), inject 4 pumping signals and detect; For the three-phase and four-line electric energy meter, then can on current transformer or voltage transformer (VT), inject 6 pumping signals and detect.For avoiding interference, the Automatic Cycle timesharing under computer control of multichannel pumping signal is injected, and declares the toe-in fruit at the wiring identification end of electric energy meter according to polarity, separate demonstration.
Fig. 3 is that as shown in Figure 3, this system 30 mainly comprises like lower module according to the synoptic diagram of the main modular of the wireless metering secondary nuclear wire system of the embodiment of the invention:
Pumping signal injection device 31 is used for injecting pumping signal at the leading-out terminal of secondary circuit mutual inductor.
Pumping signal acquisition module 32, the end of incoming cables pumping signal over the ground and the leading-out terminal pumping signal over the ground of electric energy meter that are used for gathering the secondary circuit electric energy meter.
Pumping signal is module 33 relatively, and it is relatively strong and weak that the end of incoming cables pumping signal over the ground and the leading-out terminal pumping signal over the ground of electric energy meter of electric energy meter are carried out signal, obtains the strong and weak comparative result of signal.
The system 30 of Fig. 3 can also comprise:
The data code parsing module is used for parsing the data code in the strong pumping signal of the strong and weak comparative result signal of signal.
The classification determination module of mutual inductor is used for the classification according to the data code judgement mutual inductor that is parsed.
The separate determination module of mutual inductor is used for judging the separate of mutual inductor according to the data code that is parsed.
Can know that by above description pumping signal is injected through the leading-out terminal at mutual inductor by wireless metering secondary nuclear line method of the present invention and system; After gathering the leading-out terminal pumping signal over the ground of end of incoming cables pumping signal over the ground and electric energy meter of electric energy meter in the secondary circuit it is carried out the strong and weak comparison of signal; Obtain the strong and weak comparative result of signal, confirm the polarity of mutual inductor at last according to comparative result, and judge the separate and classification of mutual inductor according to the data code in the pumping signal; Can realize that simultaneously multichannel differentiates simultaneously; Through computer realization, need not extra wiring, speed is fast and accurate rate is high.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the memory storage and carry out, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize by calculation element.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a wireless metering secondary nuclear line method is characterized in that, comprising:
Steps A: the leading-out terminal of mutual inductor injects pumping signal in secondary circuit;
Step B: the end of incoming cables pumping signal over the ground and the leading-out terminal pumping signal over the ground of said electric energy meter of gathering electric energy meter in the said secondary circuit;
Step C: it is relatively strong and weak that the leading-out terminal pumping signal over the ground of the end of incoming cables of said electric energy meter pumping signal and said electric energy meter is over the ground carried out signal, obtains the strong and weak comparative result of signal;
Step D: the polarity of confirming mutual inductor in the said secondary circuit according to the strong and weak comparative result of said signal.
2. wireless metering secondary nuclear line method according to claim 1 is characterized in that, comprises the unique data code of representing said mutual inductor in the said pumping signal.
3. wireless metering secondary nuclear line method according to claim 2 is characterized in that, also comprises after the step C:
Parse the said data code in the said pumping signal that signal is strong in the strong and weak comparative result of said signal.
4. wireless metering secondary nuclear line method according to claim 3 is characterized in that, also comprises after the said said data code that parses in the said pumping signal that signal is strong in the strong and weak comparative result of said signal:
Confirm the classification of said mutual inductor according to the said data code that parses.
5. wireless metering secondary nuclear line method according to claim 3 is characterized in that, also comprises after the said said data code that parses in the said pumping signal that signal is strong in the strong and weak comparative result of said signal:
Said data code according to parsing is confirmed the separate of said mutual inductor.
6. according to each described wireless metering secondary nuclear line method in the claim 1 to 5, it is characterized in that said mutual inductor is current transformer or voltage transformer (VT).
7. a wireless metering secondary nuclear wire system is characterized in that, comprising:
The pumping signal injection device is used for injecting pumping signal at the leading-out terminal of secondary circuit mutual inductor;
The pumping signal acquisition module, the end of incoming cables pumping signal over the ground and the leading-out terminal pumping signal over the ground of said electric energy meter that are used for gathering said secondary circuit electric energy meter;
Pumping signal is module relatively, and it is relatively strong and weak that the end of incoming cables pumping signal over the ground and the leading-out terminal pumping signal over the ground of said electric energy meter of said electric energy meter are carried out signal, obtains the strong and weak comparative result of signal;
Polarity determination module is confirmed the polarity of mutual inductor in the said secondary circuit according to the strong and weak comparative result of said signal.
8. wireless metering secondary nuclear wire system according to claim 7 is characterized in that said system also comprises:
The data code parsing module is used for parsing the said data code in the strong said pumping signal of the strong and weak comparative result signal of said signal.
9. wireless metering secondary nuclear wire system according to claim 8 is characterized in that said system also comprises:
The classification determination module of mutual inductor is used for judging according to the said data code that is parsed the classification of said mutual inductor.
10. wireless metering secondary nuclear wire system according to claim 8 is characterized in that said system also comprises:
The separate determination module of mutual inductor is confirmed the separate of said mutual inductor according to the said data code that is parsed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110162753.9A CN102830326B (en) | 2011-06-16 | 2011-06-16 | Method and system for wire checking of wireless metering secondary circuit |
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| CN201110162753.9A CN102830326B (en) | 2011-06-16 | 2011-06-16 | Method and system for wire checking of wireless metering secondary circuit |
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| CN102830326B CN102830326B (en) | 2015-04-08 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202935A (en) * | 2017-07-04 | 2017-09-26 | 西安热工研究院有限公司 | A kind of transformer secondary circuit is automatic to line system and method |
| CN110082703A (en) * | 2019-05-22 | 2019-08-02 | 国网重庆市电力公司电力科学研究院 | A kind of power distribution network metering device second loop return wiring detection method and device |
| CN111505558A (en) * | 2020-04-29 | 2020-08-07 | 国网北京市电力公司 | Method and device for identifying pincerlike current transformer, storage medium and processor |
| CN111650538A (en) * | 2020-05-29 | 2020-09-11 | 深圳供电局有限公司 | Electric energy meter wiring detection device and method |
| CN111650535A (en) * | 2020-05-29 | 2020-09-11 | 深圳供电局有限公司 | Electric energy meter wiring detection method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202935A (en) * | 2017-07-04 | 2017-09-26 | 西安热工研究院有限公司 | A kind of transformer secondary circuit is automatic to line system and method |
| CN107202935B (en) * | 2017-07-04 | 2023-09-01 | 西安热工研究院有限公司 | Automatic alignment system and method for secondary circuit of transformer |
| CN110082703A (en) * | 2019-05-22 | 2019-08-02 | 国网重庆市电力公司电力科学研究院 | A kind of power distribution network metering device second loop return wiring detection method and device |
| CN111505558A (en) * | 2020-04-29 | 2020-08-07 | 国网北京市电力公司 | Method and device for identifying pincerlike current transformer, storage medium and processor |
| CN111650538A (en) * | 2020-05-29 | 2020-09-11 | 深圳供电局有限公司 | Electric energy meter wiring detection device and method |
| CN111650535A (en) * | 2020-05-29 | 2020-09-11 | 深圳供电局有限公司 | Electric energy meter wiring detection method |
| CN111650535B (en) * | 2020-05-29 | 2022-07-15 | 深圳供电局有限公司 | Electric energy meter wiring detection method |
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| CN102830326B (en) | 2015-04-08 |
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