CN205210166U - Electric detection means is stolen in reposition of redundant personnel - Google Patents

Electric detection means is stolen in reposition of redundant personnel Download PDF

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Publication number
CN205210166U
CN205210166U CN201520847559.8U CN201520847559U CN205210166U CN 205210166 U CN205210166 U CN 205210166U CN 201520847559 U CN201520847559 U CN 201520847559U CN 205210166 U CN205210166 U CN 205210166U
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China
Prior art keywords
current
voltage
unit
time monitoring
real
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CN201520847559.8U
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Chinese (zh)
Inventor
张晓东
杨剑
郑伟书
常亮
岳巍
王运全
张仲耀
刘涛
郑磊
曲效武
李蕾
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State Grid Corp of China SGCC
Shandong Electric Power Research Institute
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State Grid Corp of China SGCC
Shandong Electric Power Research Institute
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Priority to CN201520847559.8U priority Critical patent/CN205210166U/en
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Publication of CN205210166U publication Critical patent/CN205210166U/en
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Abstract

The utility model discloses an electric detection means is stolen in reposition of redundant personnel, including voltage acquisition unit and electric current acquisition unit, voltage acquisition unit's three -phase binding post is connected to the triphase secondary winding binding post of a current transformer respectively for a current transformer secondary winding terminal voltage among the collection high -tension electricity ability measurement system is and give real time monitoring the unit with the voltage of gathering, electric current acquisition unit connects to the secondary current return circuit through the 2nd current transformer for gather high -tension electricity ability measurement system secondary circuit current value and give real time monitoring the unit with the current value of gathering, whether voltage that the utilization of real time monitoring unit was gathered and the ratio of electric current change judgement exist is stolen. Determine whether there is surreptitiously electric action of reposition of redundant personnel through measuring measurement secondary circuit resistance value, the result is accurate, and the discovery in time.

Description

A kind of shunting fraudulent use detection device
Technical field
The utility model relates to stealing detection technique field, particularly relates to a kind of shunting fraudulent use detection device.
Background technology
In high-voltage electrical energy metering system, the shunting stealing for current return in electric energy metering secondary is a kind of common stealing mode.Shunting stealing normally with wire by metering system current return short circuit, the electric current making to flow through electric energy meter current coil reduces or vanishing, affects the correct metering of electric energy meter, reaches the object of stealing.The more difficult discovery of this stealing, whether a kind of device of eager needs can detect exists this phenomenon of shunting stealing.
Utility model content
The purpose of this utility model is exactly to solve the problem, and provides a kind of shunting fraudulent use detection device, and judge whether to there is shunting electricity filching behavior by measuring secondary circuit loop resistance values, result is accurate, finds in time.
To achieve these goals, the utility model adopts following technical scheme:
A kind of shunting fraudulent use detection device, comprise voltage acquisition unit and current acquisition unit, three-phase terminal of described voltage acquisition unit is connected to the Secondary Winding connection terminal of the first current transformer three-phase respectively, for gathering the first secondary winding in current transformer terminal voltage in high-voltage electrical energy metering system, and give real-time monitoring unit by the voltage of collection; Described current acquisition unit is connected to secondary current loop by the second current transformer, for gathering high-voltage electrical energy metering system secondary loop current value and giving real-time monitoring unit by the current value of collection, described real-time monitoring unit utilizes the ratio of the voltage and current collected to change and judges whether to there is stealing.
Described real-time monitoring unit comprises voltage pretreatment unit and electric current pretreatment unit, and described voltage pretreatment unit is all connected the input end of microprocessor with the output terminal of electric current pretreatment unit, described microprocessor connection data storage unit.The loop resistance values obtained is stored in data-carrier store, and compares with the data stored early stage, judges whether impedance loop significant change occurs.
The output terminal of described real-time monitoring unit connects display.Display can in real time display monitoring to data and the real-time impedance value that calculates.
The output terminal of described real-time monitoring unit also connects alarm unit.Warning can be sent when generation shunting stealing by alarm unit.
Finding shunting electricity filching behavior for investigating and prosecuting timely and effectively, shunting electricity filching behavior must be studied on the impact of metering secondary.According to the impedance operator of circuit, the impedance in design flow system power loop is Z, then wherein U is the terminal voltage of metering current mulual inductor Secondary Winding, and I is metering secondary electric current, also namely flows through the electric current of electric energy meter.When shunting stealing occurs metering system, metering system current return impedance Z will change, so pass through the impedance loop Z of Real-Time Monitoring metering secondary, can shift to an earlier date the shunting electricity filching behavior of anticipation for metering secondary, send warning message.
The beneficial effects of the utility model are:
Structure of the present utility model is simple, voltage acquisition unit is connected with secondary winding in current transformer connection terminal is convenient, secondary terminals voltage can be gathered, current acquisition unit Real-time Collection high-voltage electrical energy metering system secondary loop current value, after real-time monitoring unit processes for the voltage to collection, current signal, ratio both calculating in real time, the loop resistance values obtained is stored in data-carrier store, and compare with the data stored early stage, judge whether impedance loop significant change occurs.Must be changed by resistance value and judge whether to there is stealing electricity phenomenon, Detection accuracy is high, can know generation electricity filching behavior in time.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of real-time monitoring unit of the present utility model.
Wherein, 1. voltage acquisition unit, 2. current acquisition unit, 3. real-time monitoring unit, 4. voltage pre-process circuit, 5. electric current pre-process circuit, 6. microprocessor, 7. data-carrier store, 8. display, 9. alarm unit.
Embodiment:
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
As shown in Figure 1-2, A, B, C three-phase terminal of voltage acquisition unit 1 is connected to respectively first current transformer A, B, C three-phase Secondary Winding connection terminal, for gathering secondary winding in current transformer terminal voltage; Current acquisition unit 2 is connected to secondary current loop by the second current transformer, can be connected to secondary current loop by high precision punching CT, for gathering secondary current signal; Collected secondary voltage, current signal are sent to real-time monitoring unit 3 by wire; After voltage pretreatment unit 4 and electric current pretreatment unit 5, be sent to microprocessor 6.
Microprocessor will calculate the ratio of metering secondary terminal voltage and secondary current, the data that this ratio is used to store with data-carrier store 7 mid-early stage on the one hand compare, and judge whether to undergo mutation, this ratio is admitted to data-carrier store again, to compare with ratio calculated next time on the other hand.
Finally this numerical value is sent to display 8, for external display.If ratio (loop resistance values) is undergone mutation, alarm unit 9 can send warning message.
Voltage acquisition unit is connected with real-time monitoring unit respectively by wire with current acquisition unit; Voltage acquisition unit has three-phase voltage splicing ear, can be connected, to gather secondary terminals voltage with the first secondary winding in current transformer connection terminal is convenient; Current acquisition unit is realized by high precision CT, can effectively prevent metering secondary from opening a way; First real-time monitoring unit carries out the pre-service such as filtering to the data that collecting unit transmits, and is sent to afterwards in microprocessor again, carries out corresponding computing.The loop resistance values obtained is stored in data-carrier store, and compares with the data stored early stage, judges whether impedance loop significant change occurs.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.

Claims (4)

1. a shunting fraudulent use detection device, it is characterized in that, comprise voltage acquisition unit and current acquisition unit, three-phase terminal of described voltage acquisition unit is connected to the Secondary Winding connection terminal of the first current transformer three-phase respectively, for gathering the first secondary winding in current transformer terminal voltage in high-voltage electrical energy metering system, and give real-time monitoring unit by the voltage of collection; Described current acquisition unit is connected to secondary current loop by the second current transformer, for gathering high-voltage electrical energy metering system secondary loop current value and giving real-time monitoring unit by the current value of collection, described real-time monitoring unit utilizes the ratio of the voltage and current collected to change and judges whether to there is stealing.
2. a kind of shunting fraudulent use detection device as claimed in claim 1, it is characterized in that, described real-time monitoring unit comprises voltage pretreatment unit and electric current pretreatment unit, described voltage pretreatment unit is all connected the input end of microprocessor with the output terminal of electric current pretreatment unit, described microprocessor connection data storage unit.
3. a kind of shunting fraudulent use detection device as claimed in claim 1 or 2, it is characterized in that, the output terminal of described real-time monitoring unit connects display.
4. a kind of shunting fraudulent use detection device as claimed in claim 1 or 2, it is characterized in that, the output terminal of described real-time monitoring unit also connects alarm unit.
CN201520847559.8U 2015-10-29 2015-10-29 Electric detection means is stolen in reposition of redundant personnel Active CN205210166U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520847559.8U CN205210166U (en) 2015-10-29 2015-10-29 Electric detection means is stolen in reposition of redundant personnel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520847559.8U CN205210166U (en) 2015-10-29 2015-10-29 Electric detection means is stolen in reposition of redundant personnel

Publications (1)

Publication Number Publication Date
CN205210166U true CN205210166U (en) 2016-05-04

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109001529A (en) * 2018-06-12 2018-12-14 北京智芯微电子科技有限公司 Distributing electric heating measures acquisition method and system
CN110082579A (en) * 2019-05-21 2019-08-02 国网湖南省电力有限公司 A kind of area's Intelligent power-stealing prevention monitoring method, system, equipment and medium
CN110133349A (en) * 2019-06-04 2019-08-16 河南工业大学 Anti- shunting stealing electricity method based on alien frequencies method
CN110632448A (en) * 2019-09-16 2019-12-31 深圳供电局有限公司 Wiring detection method for three-phase three-wire metering device with mutual inductor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109001529A (en) * 2018-06-12 2018-12-14 北京智芯微电子科技有限公司 Distributing electric heating measures acquisition method and system
CN109001529B (en) * 2018-06-12 2020-10-27 北京智芯微电子科技有限公司 Distributed electric heating metering and collecting method and system
CN110082579A (en) * 2019-05-21 2019-08-02 国网湖南省电力有限公司 A kind of area's Intelligent power-stealing prevention monitoring method, system, equipment and medium
CN110133349A (en) * 2019-06-04 2019-08-16 河南工业大学 Anti- shunting stealing electricity method based on alien frequencies method
CN110632448A (en) * 2019-09-16 2019-12-31 深圳供电局有限公司 Wiring detection method for three-phase three-wire metering device with mutual inductor

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