CN204008785U - Measurement loop fault monitoring system - Google Patents
Measurement loop fault monitoring system Download PDFInfo
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- CN204008785U CN204008785U CN201420408908.1U CN201420408908U CN204008785U CN 204008785 U CN204008785 U CN 204008785U CN 201420408908 U CN201420408908 U CN 201420408908U CN 204008785 U CN204008785 U CN 204008785U
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Abstract
The utility model discloses a kind of measurement loop fault monitoring system, relate to a kind of feeder line fault monitoring system, relate in particular to a kind of fault monitoring system of measurement loop, this system comprises Wireless data acquisition unit and wireless data converter, described Wireless data acquisition unit has on three three-phases that are installed in respectively high-tension line, described wireless data converter is installed in low-pressure side, wherein Wireless data acquisition unit is by current sample coil, current sampling circuit, collector micro power radio module, voltage sense circuit, voltage sampling circuit, collector CPU, circuit power-supply circuit and battery feed circuit form, wireless data converter is by stopwatch RS485 circuit, converter CPU, converter micro power radio module, power circuit and local communication interface form, described collector CPU comprises electric current A/D modular converter and voltage A/D modular converter.The beneficial effects of the utility model are: the fault of more effective discovery low tension loop or electricity filching behavior.
Description
[technical field]
The utility model relates to a kind of feeder line fault monitoring system, relates in particular to a kind of fault monitoring system of measurement loop.
[background technology]
At present highly for low meter, specially become special transformer terminals (negative control terminal) system acquisition that user mainly adopts and specially become user power utilization information, and be reported to main website of electric company, realize remote monitoring and specially become user power utilization situation.Specially transformer terminals has AC sampling function, can gather the electrical network parameters such as electric current, voltage, power, electric weight in accessed loop.Specially transformer terminals is with local RS485 bus interface, can copy reading specially becomes user and measures the data such as electric current with electric energy meter, voltage, power, electric weight.General special transformer terminals and user's electric energy meter access the same circuit, the power by special transformer terminals and user's electric energy meter and electric weight differential, judges whether the operation of user's electric energy meter exists fault or electricity filching behavior.Also can be by the comprehensive specially electrical network parameter that transformer terminals AC sampling arrives and the data of user's electric energy meter, judgement loop fault or user's electricity filching behavior.But if whole low tension loop exists fault or electricity filching behavior, cannot judge by power and the differential of electric weight of special transformer terminals and user's electric energy meter.
[utility model content]
The purpose of this utility model is effectively to overcome the deficiency of above-mentioned technology, a kind of fault monitoring system of measurement loop is provided, this system, by the electric current on monitoring high and low pressure side power circuit and the data of voltage, contrasts more effective fault or the electricity filching behavior of having found low tension loop.
The technical solution of the utility model is achieved in that a kind of measurement loop fault monitoring system, it comprises the wireless data converter that is installed in low-pressure side, described wireless data converter is connected with the main station system of low-pressure side, described wireless data converter is also connected with the electric energy meter of low-pressure side, its improvements are, it also comprises Wireless data acquisition unit, there are three A that are installed in respectively high-tension line, B, on C three-phase, wherein Wireless data acquisition unit is by current sample coil, current sampling circuit, collector micro power radio module, voltage sense circuit, voltage sampling circuit, collector CPU, circuit power-supply circuit and battery feed circuit form, at high-pressure side line of electric force A, B, power taking inductive coil is also housed respectively on C three-phase, Wireless data acquisition unit is electrically connected to described power taking inductive coil, described collector CPU comprises electric current A/D modular converter and voltage A/D modular converter, described current sample coil is by being electrically connected with described current sampling circuit, the electric current A/D modular converter of described current sampling circuit and described collector CPU is electrically connected, described voltage sense circuit and described voltage sampling circuit are electrically connected, the voltage A/D modular converter of described voltage sampling circuit and described collector CPU is electrically connected, described collector micro power radio module, circuit power-supply circuit and battery feed circuit are electrically connected with described collector CPU respectively, wireless data converter is comprised of stopwatch RS485 circuit, converter CPU, converter micro power radio module, power circuit and local communication interface, and described stopwatch RS485 circuit, converter micro power radio module, power circuit and local communication interface is electrically connected with described converter CPU respectively.
In said structure, described current sampling circuit comprises CURRENT interface, transient voltage suppressor diode TVS1, resistance R 6, resistance R 8, filter capacitor C1 and filter capacitor C2, and the out splice going splice that described CURRENT interface connects described current sample coil imports induction current; Described TVS1 can prevent voltage jump, the collector CPU of protection described in rear end; Described resistance R 6, resistance R 8 are connected in series rear middle access ground, are sampling resistor, and with common mode interference inhibiting effect; Described capacitor C 1, capacitor C 2 are connected in series rear middle access ground, are filter capacitor, can filter interference wave; Described current sampling circuit will output to described collector CPU after induction current filtering.
In said structure; described voltage sampling circuit comprises VOL_INDUCTION solder joint, voltage suppressor diode TVS2, capacitor C 20 and resistance R 2; access ground after described diode TVS2, capacitor C 20 and resistance R 2 are connected in parallel respectively; the described collector CPU of transient voltage suppressor diode TVS2 protection; to the earth, there is electric capacity Leakage Current in wire of high-tension line; this electric current flows to C20 filtering through VOL_INDUCTION solder joint; flow to resistance R 2 again and be transformed into voltage signal, this voltage signal outputs to described collector CPU.
In said structure, described circuit power-supply circuit and battery feed circuit comprise POWER interface, rectifier bridge stack D2, capacitor C 36, stabilivolt D4, POWERCHK check circuit, battery BAT, diode D3, capacitor C 22, capacitor C 21 and power supply voltage stabilizing chip XC6201P332, described POWER interface connects described power taking inductive coil, induced voltage is after rectifier bridge stack D2 rectification, through capacitor C 36 filtering, again after stabilivolt D4 voltage stabilizing by POWERCHK channel check, if electric current is greater than 10A, just provide vdd voltage; If electric current is less than 10A, the electric current of battery BAT, just through diode D3 rectification, provides vdd voltage after capacitor C 22 and capacitor C 21 filtering, and vdd voltage provides the power supply of 3.3V after XC6201P332 voltage stabilizing is processed to system.
In said structure, described collector CPU comprise a kind of with 16 A/D modular converters, have the MCU chip MSP430FE427 of two current-differencing input channels and a voltage difference input channel.
In said structure, described wireless data converter provides fault or stealing information to main station system by described local communication interface, and described local communication interface adopts RS485 bus or UART interface.
The beneficial effects of the utility model are: by the electric current on monitoring high and low pressure side power circuit and the data of voltage, undertaken after this, fault or stealing information are passed to main station system, more effective fault or the electricity filching behavior of having found low tension loop.
[accompanying drawing explanation]
Fig. 1 is the utility model system principle diagram;
Fig. 2 is the utility model Wireless data acquisition unit hardware block diagram;
Fig. 3 is the utility model wireless data converter hardware block diagram;
Fig. 4 is the utility model current sampling circuit figure;
Fig. 5 is the utility model voltage sampling circuit figure;
Fig. 6 is the utility model circuit power-supply circuit and battery feed circuit figure;
Fig. 7 is the utility model collector CPU peripheral circuit figure.
[embodiment]
Below in conjunction with drawings and Examples, the utility model will be further described.
With reference to Fig. 1, shown in Fig. 2 and Fig. 3, the fault monitoring system of the measurement loop that the utility model discloses, it comprises the wireless data converter that is installed in low-pressure side, described wireless data converter is connected with the main station system of low-pressure side, described wireless data converter is also connected with the electric energy meter of low-pressure side, it is characterized in that, it also comprises Wireless data acquisition unit, there are three A that are installed in respectively high-tension line, B, on C three-phase, wherein Wireless data acquisition unit is by current sample coil, current sampling circuit, collector micro power radio module, voltage sense circuit, voltage sampling circuit, collector CPU, circuit power-supply circuit and battery feed circuit form, at high-pressure side line of electric force A, B, power taking inductive coil is also housed respectively on C three-phase, Wireless data acquisition unit is electrically connected to described power taking inductive coil, described collector CPU comprises electric current A/D modular converter and voltage A/D modular converter, described current sample coil is by being electrically connected with described current sampling circuit, the electric current A/D modular converter of described current sampling circuit and described collector CPU is electrically connected, described voltage sense circuit and described voltage sampling circuit are electrically connected, the voltage A/D modular converter of described voltage sampling circuit and described collector CPU is electrically connected, described collector micro power radio module, circuit power-supply circuit and battery feed circuit are electrically connected with described collector CPU respectively, wireless data converter is comprised of stopwatch RS485 circuit, converter CPU, converter micro power radio module, power circuit and local communication interface, and described stopwatch RS485 circuit, converter micro power radio module, power circuit and local communication interface is electrically connected with described converter CPU respectively.
Structure and effect with regard to each several part is below described in detail, current sample inductive coil 11 can be responded to the electric current of high-tension line and this induction current is delivered to described current sampling circuit, shown in Fig. 4 current sampling circuit figure, described current sampling circuit comprises CURRENT interface, transient voltage suppressor diode TVS1, resistance R 6, resistance R 8, filter capacitor C1 and filter capacitor C2, and the out splice going splice that described CURRENT interface connects described current sample coil imports induction current; Described TVS1 can prevent voltage jump, the collector CPU of protection described in rear end; Described resistance R 6, resistance R 8 are connected in series rear middle access ground, are sampling resistor, and with common mode interference inhibiting effect; Described capacitor C 1, capacitor C 2 are connected in series rear middle access ground, are filter capacitor, can filter interference wave; Described current sampling circuit will output to described collector CPU after induction current filtering.
Because there is electric capacity Leakage Current to the earth in wire of high-tension line, voltage sense circuit can be responded to the size of leakage current, this leakage current flows to voltage sampling circuit, shown in Fig. 5 voltage sampling circuit figure, described voltage sampling circuit comprises VOL_INDUCTION solder joint, voltage suppressor diode TVS2, capacitor C 20 and resistance R 2, described diode TVS2, access ground after capacitor C 20 and resistance R 2 are connected in parallel respectively, the described collector CPU of transient voltage suppressor diode TVS2 protection, to the earth, there is electric capacity Leakage Current in wire of high-tension line, this electric current flows to C20 filtering through VOL_INDUCTION solder joint, flow to again resistance R 2 and be transformed into voltage signal, this voltage signal outputs to described collector CPU.
This system is to Wireless data acquisition unit, to power like this, shown in Fig. 6 circuit power-supply circuit and battery feed circuit figure, described circuit power-supply circuit and battery feed circuit comprise POWER interface, rectifier bridge stack D2, capacitor C 36, stabilivolt D4, POWERCHK check circuit, battery BAT, diode D3, capacitor C 22, capacitor C 21 and power supply voltage stabilizing chip XC6201P332, described POWER interface connects described power taking inductive coil, induced voltage is after rectifier bridge stack D2 rectification, through capacitor C 36 filtering, again after stabilivolt D4 voltage stabilizing by POWERCHK channel check, if electric current is greater than 10A, vdd voltage is just provided, if electric current is less than 10A, the electric current of battery BAT, just through diode D3 rectification, provides vdd voltage after capacitor C 22 and capacitor C 21 filtering, and vdd voltage provides the power supply of 3.3V after XC6201P332 voltage stabilizing is processed to system.
Collector CPU is work like this, shown in Fig. 7 collector CPU peripheral circuit figure, collector CPU adopts chip MSP430FE427, MSP430FE427 is a kind of MCU chip of the MSP430 of TIX series, this chip is with 16 A/D modular converters, there are two current-differencing input channels and a voltage difference input channel, so it can carry out A/D conversion to the voltage and current signal of input, in addition MSP430FE427 flexibly clock system also can be in the time less than 6us from the 0.7uA standby mode (saving battery consumption mode) of low-power consumption, wake up.
In sum, described current sample coil is for delivering to induction current described current sampling circuit, described current sampling circuit carries out induction current to deliver in described collector CPU after filtering, and described collector CPU obtains the current data in high-tension line by described electric current A/D modular converter union; Described voltage sense circuit induction high-pressure side leakage current values, described voltage sampling circuit is delivered in described collector CPU after the leakage current of induction is converted to voltage, and described collector CPU obtains the voltage-to-ground data in high-tension line by described A/D modular converter union.In above-mentioned structure, described Wireless data acquisition unit CPU is sent to described wireless data converter by described collector micro power radio module by the electric current of sampling, voltage data, makes low-pressure side device can obtain on high-tension side electric current, voltage data.
As shown in Figure 1, described wireless data converter receives after high voltage side current that Wireless data acquisition unit sends, voltage data, simultaneously by stopwatch RS485 circuit sampling low-pressure side user electric energy meter current, voltage data.High-tension current, voltage, through transformer, are transformed to low-pressure side electric current, voltage, in low-pressure side, after CT, PT conversion, access electric energy meter.Wireless data converter is according to field wiring situation, by high voltage side current, voltage data, through the no-load voltage ratio of transformer and CT, PT convert to can be comparable with the data of electric energy meter data, compare again the difference of two groups of data, when difference reaches designated value (generally, current limit is 5%, and voltage limit value is 10%), just can judge whether measurement loop exists fault or electricity filching behavior, wireless data converter is just passed to main station system by local communication interface fault or stealing information.
Described above is only preferred embodiment of the present utility model, and above-mentioned specific embodiment is not to restriction of the present utility model.In technological thought category of the present utility model, can there is various distortion and modification, the retouching that all those of ordinary skill in the art make according to above description, revise or be equal to replacement, all belong to the scope that the utility model is protected.
Claims (6)
1. a measurement loop fault monitoring system, it comprises the wireless data converter that is installed in low-pressure side, described wireless data converter is connected with the main station system of low-pressure side, described wireless data converter is also connected with the electric energy meter of low-pressure side, it is characterized in that, it also comprises Wireless data acquisition unit, there are three A that are installed in respectively high-tension line, B, on C three-phase, wherein Wireless data acquisition unit is by current sample coil, current sampling circuit, collector micro power radio module, voltage sense circuit, voltage sampling circuit, collector CPU, circuit power-supply circuit and battery feed circuit form, at high-pressure side line of electric force A, B, power taking inductive coil is also housed respectively on C three-phase, Wireless data acquisition unit is electrically connected to described power taking inductive coil, described collector CPU comprises electric current A/D modular converter and voltage A/D modular converter, described current sample coil is by being electrically connected with described current sampling circuit, the electric current A/D modular converter of described current sampling circuit and described collector CPU is electrically connected, described voltage sense circuit and described voltage sampling circuit are electrically connected, the voltage A/D modular converter of described voltage sampling circuit and described collector CPU is electrically connected, described collector micro power radio module, circuit power-supply circuit and battery feed circuit are electrically connected with described collector CPU respectively, wireless data converter is comprised of stopwatch RS485 circuit, converter CPU, converter micro power radio module, power circuit and local communication interface, and described stopwatch RS485 circuit, converter micro power radio module, power circuit and local communication interface is electrically connected with described converter CPU respectively.
2. measurement loop fault monitoring system according to claim 1, it is characterized in that, described current sampling circuit comprises CURRENT interface, transient voltage suppressor diode TVS1, resistance R 6, resistance R 8, filter capacitor C1 and filter capacitor C2, and the out splice going splice that described CURRENT interface connects described current sample coil imports induction current; Described TVS1 can prevent voltage jump, the collector CPU of protection described in rear end; Described resistance R 6, resistance R 8 are connected in series rear middle access ground, are sampling resistor, and with common mode interference inhibiting effect; Described capacitor C 1, capacitor C 2 are connected in series rear middle access ground, are filter capacitor, can filter interference wave; Described current sampling circuit will output to described collector CPU after induction current filtering.
3. measurement loop fault monitoring system according to claim 1, it is characterized in that, described voltage sampling circuit comprises VOL_INDUCTION solder joint, voltage suppressor diode TVS2, capacitor C 20 and resistance R 2, described diode TVS2, access ground after capacitor C 20 and resistance R 2 are connected in parallel respectively, the described collector CPU of transient voltage suppressor diode TVS2 protection, to the earth, there is electric capacity Leakage Current in wire of high-tension line, this electric current flows to C20 filtering through VOL_INDUCTION solder joint, flow to again resistance R 2 and be transformed into voltage signal, this voltage signal outputs to described collector CPU.
4. measurement loop fault monitoring system according to claim 1, it is characterized in that, described circuit power-supply circuit and battery feed circuit comprise POWER interface, rectifier bridge stack D2, capacitor C 36, stabilivolt D4, POWERCHK module, battery BAT, diode D3, capacitor C 22, capacitor C 21 and power supply voltage stabilizing chip XC6201P332, described POWER interface connects described power taking inductive coil, induced voltage is after rectifier bridge stack D2 rectification, through capacitor C 36 filtering, again after stabilivolt D4 voltage stabilizing by POWERCHK module check, if electric current is greater than 10A, vdd voltage is just provided, if electric current is less than 10A, the electric current of battery BAT, just through diode D3 rectification, provides vdd voltage after capacitor C 22 and capacitor C 21 filtering, and vdd voltage provides the power supply of 3.3V after XC6201P332 voltage stabilizing is processed to system.
5. measurement loop fault monitoring system according to claim 1, it is characterized in that, described collector CPU comprise a kind of with 16 A/D modular converters, have the MCU chip MSP430FE427 of two current-differencing input channels and a voltage difference input channel.
6. measurement loop fault monitoring system according to claim 1, it is characterized in that, described wireless data converter provides fault or stealing information to main station system by described local communication interface, and described local communication interface adopts RS485 bus or UART interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420408908.1U CN204008785U (en) | 2014-07-23 | 2014-07-23 | Measurement loop fault monitoring system |
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| CN201420408908.1U CN204008785U (en) | 2014-07-23 | 2014-07-23 | Measurement loop fault monitoring system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092917A (en) * | 2015-07-20 | 2015-11-25 | 河南行知专利服务有限公司 | Electricity theft prevention system |
| CN105116190A (en) * | 2015-07-09 | 2015-12-02 | 王双文 | Novel high-voltage user electricity stealing preventing system |
| CN105158536A (en) * | 2015-08-31 | 2015-12-16 | 国网山东省电力公司淄博供电公司 | Inspection method for electricity larceny prevention |
| CN110208587A (en) * | 2019-07-16 | 2019-09-06 | 国家电网有限公司 | A kind of 10KV route is opposed electricity-stealing monitoring device |
-
2014
- 2014-07-23 CN CN201420408908.1U patent/CN204008785U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116190A (en) * | 2015-07-09 | 2015-12-02 | 王双文 | Novel high-voltage user electricity stealing preventing system |
| CN105092917A (en) * | 2015-07-20 | 2015-11-25 | 河南行知专利服务有限公司 | Electricity theft prevention system |
| CN105092917B (en) * | 2015-07-20 | 2018-06-22 | 国网河南省电力公司平顶山供电公司 | A kind of electricity anti-theft system |
| CN105158536A (en) * | 2015-08-31 | 2015-12-16 | 国网山东省电力公司淄博供电公司 | Inspection method for electricity larceny prevention |
| CN105158536B (en) * | 2015-08-31 | 2018-07-03 | 国网山东省电力公司淄博供电公司 | Anti-electricity-theft checking method |
| CN110208587A (en) * | 2019-07-16 | 2019-09-06 | 国家电网有限公司 | A kind of 10KV route is opposed electricity-stealing monitoring device |
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Effective date of registration: 20160401 Address after: 5, building 900, No. 510000, Guangzhou Avenue, Tianhe District, Guangdong, Guangzhou, 525A08 Patentee after: The intelligent development in science and technology company limited of Guangzhou sunlight hundred million Address before: 518000 Guangdong city of Shenzhen province Nanshan District Daxin road Ma Liuzhou Industrial Zone yafangting building 6 floor 601 Patentee before: SHENZHEN YIXUNLI TECHNOLOGY CO., LTD. |