CN201397363Y - Device for measuring direct-current resistance of strong coupling transmission line - Google Patents
Device for measuring direct-current resistance of strong coupling transmission line Download PDFInfo
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- CN201397363Y CN201397363Y CN2009200847991U CN200920084799U CN201397363Y CN 201397363 Y CN201397363 Y CN 201397363Y CN 2009200847991 U CN2009200847991 U CN 2009200847991U CN 200920084799 U CN200920084799 U CN 200920084799U CN 201397363 Y CN201397363 Y CN 201397363Y
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Abstract
The utility model relates to a device for measuring direct-current resistance of a strong coupling transmission line, and adopts a direct-current resistance measuring device equipped with a storage battery and a measuring plane; the storage battery serves as a power supply of the device; a panel testing terminal is mounted on the measuring plane; the direct-current resistance measuring device comprises a voltage sampling circuit, a current sampling circuit, a sequence control switching circuit, a voltage and current collecting and measuring circuit and a 80c 320 singlechip, wherein the sequence control switching circuit is matched and connected with the voltage sampling circuit, the current sampling circuit and the panel testing terminal respectively, and connected with the storage battery; the voltage sampling circuit and the current sampling circuit are matched and connected with the voltage and current collecting and measuring circuit; and the voltage and current collecting and measuring circuit is matched and connected with the 80c 320 singlechip. The utility model has the following advantages that the measuring device is portable and practical; accurate measurement can be conducted under strong interference; the potential hazard of personnel safety of the testing personnel can be reduced to the utmost extent; the wiring working capacity of the personnel is reduced; the automatic switch and measurement can be performed; and the working efficiency is improved.
Description
Technical field
The utility model relates to a kind of device of power line DC resistance test, particularly a kind of device of measuring strong coupling power line DC resistance, and there is strong coupling circuit with it in it near being applicable to test line, disturbs bigger situation on the test line.
Background technology
The conventional device that is used to measure power line DC resistance, normally DC Resistance of Transformer tester or some heavy DC resistance meter.When this class testing instrument does not have the power line DC resistance of electromagnetic interference (EMI) in measurement, can obtain satisfied result.But, in real work, tend to run into, because transmission line of electricity distance, quantity is many, unavoidably has situation parallel, that intersect with other transmission line of electricity, particularly in recent years, the electrical network fast development, circuit corridor growing tension, the transmission line of electricity dense degree constantly increases, and electromagnetic coupled is stronger between circuit and the circuit.Under such condition, when carrying out the test of newly-built circuit direct current resistance, will there be bigger power frequency interference voltage and electric current in the circuit.This bigger interference voltage or electric current can affect to measurement: the one, and the personal safety of survey crew is on the hazard; The 2nd, there is the possibility of damaging in testing tool; The 3rd, disturbed to influence measurement result inaccurate or unavailable.
Summary of the invention
The utility model fundamental purpose is, under strong jamming, can not accurately measure the practical problems of power line DC resistance for solving existing measurement mechanism effectively, a kind of device of measuring strong coupling power line DC resistance is provided, and it can be under the strong coupling state, accurate measuring circuit direct current resistance.This device using method is simple, and concrete enforcement investment is less, and operation maintenance is also very convenient.
The utility model also has a purpose to be, there was the hidden danger of personal safety in frequent reconfiguration line when the resistance measurement of transmission line of electricity three-phase dc was carried out in solution under strong jamming, a kind of device of measuring strong coupling power line DC resistance provided by the invention will be implemented in measuring process exactly and need not manually to change wiring;
It is the simplified measurement wiring that the utility model has a purpose again, improves surveying work efficient, a kind of device of measuring strong coupling power line DC resistance that is provided, and having automaticallyes switch measures phase sequence and is converted to the function that every phase circuit directly hinders.
Above-mentioned technical though of the present utility model, solved by following technical proposals: adopt the device of being furnished with accumulator and measuring the measurement direct current resistance of panel, accumulator is as the power supply of device, measure on the panel panel test terminal is housed, it is characterized in that, the device of measuring direct current resistance has adopted voltage sample circuit, current sampling circuit, the sequential control commutation circuit, electric current and voltage is gathered metering circuit, the 80c320 single-chip microcomputer, wherein, the sequential control commutation circuit respectively with voltage sample circuit, current sampling circuit, the panel test terminal is joined to connect and is linked to each other with accumulator, voltage sample circuit, current sampling circuit and electric current and voltage collection metering circuit are joined and are connected, and electric current and voltage gathers metering circuit and the 80c320 single-chip microcomputer is joined even.
It is characterized in that the panel test terminal comprises three-phase voltage terminal and three-phase current terminal.
It is characterized in that voltage sample circuit has adopted the electric resistance partial pressure sensor that can be voltage signal with alternate ohmically voltage transitions.
It is characterized in that the electric current and voltage Acquisition Circuit has adopted the modulus conversion chip with MAX125.
It is characterized in that the 80c320 single-chip microcomputer has adopted the 80c320 single chip circuit.
It is characterized in that it is the Hall current sensor of voltage signal that current sampling circuit has adopted current conversion.
It is characterized in that the sequential control commutation circuit has adopted the relay that can realize that different alternate resistance measurements are switched.
Principle of work of the present utility model is, by being installed in the panel test terminal on the panel, comprise three-phase voltage terminal and three-phase current terminal, adopted the 80c320 single-chip microcomputer, the realization four-electrode method is measured, thereby can eliminate the influence of contact resistance and lead resistance effectively, be implemented in the different alternate conversions of carrying out the resistance measurement process by the sequential control commutation circuit.The 80c320 single-chip microcomputer has adopted the 80c320 single chip circuit.Specifically, having adopted can be the sensor of suitable voltage signal with alternate ohmically voltage transitions, gathering metering circuit by electric current and voltage again is digital signal with analog signal conversion, can make the sequential control commutation circuit be implemented in the different alternate conversions of carrying out the resistance measurement process, realize the control and the digital signal processing of apparatus measures process by the 80c320 single chip circuit.
Of the present utility model having the following advantages: portable practicality; Can under strong interference environment, accurately measure; Reduced tester's personal safety hidden danger to greatest extent; Reduce personnel's wiring workload, automaticallyed switch and measurement, improved work efficiency.
Description of drawings
Fig. 1, hardware configuration synoptic diagram of the present utility model.
Fig. 2, order commutation circuit figure of the present utility model.
Embodiment
Below, with reference to the accompanying drawings, describe embodiment of the present utility model in detail.
As Fig. 1, shown in Figure 2, the utility model adopts the device of being furnished with accumulator 3 and measuring the measurement direct current resistance of panel, accumulator 3 is as the power supply of device, measure on the panel panel test terminal 1 is housed, the device of measuring direct current resistance has adopted voltage sample circuit 2, current sampling circuit 6, sequential control commutation circuit 7, electric current and voltage is gathered metering circuit 4,80c320 single-chip microcomputer 5, wherein, sequential control commutation circuit 7 respectively with voltage sample circuit 2, current sampling circuit 6, panel test terminal 1 and accumulator 3 are joined and are connected, voltage sample circuit 2, current sampling circuit 6 is joined with electric current and voltage collection metering circuit 4 and is connected, and electric current and voltage collection metering circuit 4 is joined with 80c320 single-chip microcomputer 5 and connected.80c320 single-chip microcomputer 5 has adopted the 80c320 single chip circuit.Panel test terminal 1 comprises three-phase voltage terminal and three-phase current terminal.It can be the electric resistance sensor of suitable voltage signal with alternate ohmically voltage transitions that voltage sample circuit 2 has adopted.It is the MAX125 modulus conversion chip of digital signal that the metering circuit 4 of gathering electric current and voltage has adopted analog signal conversion.Sequential control commutation circuit 7 has adopted a plurality of relays.J1-J7 is a relay, connects conversion by different Testing requirement, thereby has realized in the alternate conversion of carrying out the direct current resistance measuring process of difference.
I+ is connected to the positive pole of accumulator 3, and I-is connected to Hall element, and is connected to the negative pole of accumulator 3 by Hall element.Ua, Ub, Uc are respectively A, B, C voltage in three phases measurement terminal, and Ia, Ib, Ic are respectively the electric current that is connected to test line A, B, C three-phase and inject terminal.J1-J7 is a relay.When measuring different alternate direct current resistance, the switch of J1-J7 relay (contact) state position such as following table:
Claims (7)
1, a kind of device of measuring strong coupling power line DC resistance, it adopts the device of being furnished with accumulator and measuring the measurement direct current resistance of panel, accumulator is as the power supply of device, measure on the panel panel test terminal is housed, it is characterized in that, the device of measuring direct current resistance has adopted voltage sample circuit (2), current sampling circuit (6), sequential control commutation circuit (7), electric current and voltage is gathered metering circuit (4), 80c320 single-chip microcomputer (5), wherein, sequential control commutation circuit (7) respectively with voltage sample circuit (2), current sampling circuit (6), panel test terminal (1) is joined and is connected, accumulator (3) links to each other, voltage sample circuit (2), current sampling circuit (6) is joined with electric current and voltage collection metering circuit (4) and is connected, and electric current and voltage collection metering circuit (4) is joined with 80c320 single-chip microcomputer (5) and connected.
2, a kind of device of measuring strong coupling power line DC resistance according to claim 1 is characterized in that, panel test terminal (1) comprises three-phase voltage terminal and three-phase current terminal.
3, a kind of device of measuring strong coupling power line DC resistance according to claim 1 is characterized in that, voltage sample circuit (2) has adopted the electric resistance partial pressure sensor that can be voltage signal with alternate ohmically voltage transitions.
4, a kind of device of measuring strong coupling power line DC resistance according to claim 1 is characterized in that, electric current and voltage Acquisition Circuit (4) has adopted the modulus conversion chip with MAX125.
5, a kind of device of measuring strong coupling power line DC resistance according to claim 1 is characterized in that, 80c320 single-chip microcomputer (5) has adopted the 80c320 single chip circuit.
6, a kind of device of measuring strong coupling power line DC resistance according to claim 1 is characterized in that, it is the Hall current sensor of voltage signal that current sampling circuit (6) has adopted current conversion.
7, a kind of device of measuring strong coupling power line DC resistance according to claim 1 is characterized in that, sequential control commutation circuit (7) has adopted the relay that can realize that different alternate resistance measurements are switched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200847991U CN201397363Y (en) | 2009-04-09 | 2009-04-09 | Device for measuring direct-current resistance of strong coupling transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200847991U CN201397363Y (en) | 2009-04-09 | 2009-04-09 | Device for measuring direct-current resistance of strong coupling transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201397363Y true CN201397363Y (en) | 2010-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200847991U Expired - Lifetime CN201397363Y (en) | 2009-04-09 | 2009-04-09 | Device for measuring direct-current resistance of strong coupling transmission line |
Country Status (1)
| Country | Link |
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| CN (1) | CN201397363Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981058A (en) * | 2012-12-05 | 2013-03-20 | 辽宁省电力有限公司抚顺供电公司 | Anti-interference direct current resistance testing device |
| CN104330632A (en) * | 2014-10-22 | 2015-02-04 | 中国石油化工股份有限公司 | Floating roof storage tank float tray connection wire on-line monitoring method |
| CN104698311A (en) * | 2015-02-25 | 2015-06-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | System and method for electrically detecting DC arrester of DC circuit |
| CN108445293A (en) * | 2018-05-29 | 2018-08-24 | 合肥本源量子计算科技有限责任公司 | A kind of quantum chip port impedance test device and measurement method |
-
2009
- 2009-04-09 CN CN2009200847991U patent/CN201397363Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981058A (en) * | 2012-12-05 | 2013-03-20 | 辽宁省电力有限公司抚顺供电公司 | Anti-interference direct current resistance testing device |
| CN104330632A (en) * | 2014-10-22 | 2015-02-04 | 中国石油化工股份有限公司 | Floating roof storage tank float tray connection wire on-line monitoring method |
| CN104698311A (en) * | 2015-02-25 | 2015-06-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | System and method for electrically detecting DC arrester of DC circuit |
| CN104698311B (en) * | 2015-02-25 | 2018-05-18 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of DC line direct current arrester live detection method |
| CN108445293A (en) * | 2018-05-29 | 2018-08-24 | 合肥本源量子计算科技有限责任公司 | A kind of quantum chip port impedance test device and measurement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100203 |
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| CX01 | Expiry of patent term |