CN202502158U - Direct current system parasitic circuit resistance measuring device - Google Patents
Direct current system parasitic circuit resistance measuring device Download PDFInfo
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- CN202502158U CN202502158U CN2012200972902U CN201220097290U CN202502158U CN 202502158 U CN202502158 U CN 202502158U CN 2012200972902 U CN2012200972902 U CN 2012200972902U CN 201220097290 U CN201220097290 U CN 201220097290U CN 202502158 U CN202502158 U CN 202502158U
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Abstract
The utility model relates to the field of electronic devices, and specifically relates to a resistance measuring device. The direct current system parasitic circuit resistance measuring device comprises a direct current system parasitic circuit device, and further comprises a parasitic circuit resistance measuring device. The parasitic circuit resistance measuring device is connected with the direct current system parasitic circuit device. With the above technical scheme, the direct current system parasitic circuit resistance measuring device measures the direct current parameters of the direct current system parasitic circuit device by using an alternating current method of equal effect through the parasitic circuit resistance measuring device, obtains the resistance value of a parasitic circuit module, can directly determine whether two direct current power source modules in the direct current system parasitic circuit device are independent through the resistance value, and therefore confirms the safety state of the whole direct current system.
Description
Technical field
The utility model relates to electronic device field, is specifically related to a kind of electric resistance measuring apparatus.
Background technology
For guaranteeing safe operation of electric network; From primary cut-out trip(ping) circuit, protective relaying device, automation equipment, direct supply all according to dualization separate configurations principle design, manufacturing, installation and operation; 220kV and above transformer station all are provided with two cover direct supplys, segmentation independent operating.But in actual motion owing to reasons such as apparatus insulated, wiring error, operational management often cause should the segmentation independent operating straight-flow system exist electrical equipment to connect, lose the independence of two groups of direct supplys, thereby bring hidden danger to electric power netting safe running.Present widely used straight-flow system insulating monitoring is merely measures direct supply positive and negative busbar resistance over the ground, but can't monitor the insulation resistance between two groups of DC power systems.Move reasons such as often generation is apparatus insulated, wiring error, operational management in view of the on-the-spot two groups of straight-flow systems of operation and cause two sections parasitic loops between direct current, the detection technique that presses for this respect comes straight-flow system parasitic loop situation is detected.
The utility model content
The purpose of the utility model is to provide a kind of straight-flow system parasitic loop electric resistance measuring apparatus, solves above technical matters.
The technical matters that the utility model solved can adopt following technical scheme to realize:
Straight-flow system parasitic loop electric resistance measuring apparatus comprises a straight-flow system parasitic loop device, it is characterized in that, also comprises a parasitic loop electric resistance measuring apparatus, and said parasitic loop electric resistance measuring apparatus connects said straight-flow system parasitic loop device.
The utility model is measured said straight-flow system parasitic loop device in real time, thereby can draw the parasitic loop circuit total resistance value of said straight-flow system parasitic loop device.When said parasitic loop circuit total resistance value is shown as infinity; Said straight-flow system parasitic loop device operation is normal; When said parasitic loop circuit total resistance value displayed value diminishes or be zero, show that then said straight-flow system parasitic loop device breaks down.
Said straight-flow system parasitic loop device comprises two DC power suppliers, a parasitic loop module; Two DC power suppliers are parallelly connected with said parasitic loop module respectively; The DC power supplier that is positioned at said parasitic loop module left side is first DC power supplier, and the DC power supplier that is positioned at said parasitic loop module right side is second DC power supplier.
Said parasitic loop electric resistance measuring apparatus comprises a microprocessor system, two voltage measuring apparatus, an AD converter; Two said voltage measuring apparatus are respectively first voltage measuring apparatus, second voltage measuring apparatus; Said first voltage measuring apparatus is parallelly connected with said first DC power supplier, and said second voltage measuring apparatus is parallelly connected with said second DC power supplier.The voltage of said DC power supplier is a stationary value; In order to measure the resistance value of said parasitic loop module; Can its dc parameter can be measured through said voltage measuring apparatus with the effect of said straight-flow system parasitic loop device through exchanging method of equal effects.
Said first voltage measuring apparatus comprises a parallelly connected circuit module, a resistor; Said resistor is first resistors in series; The said first resistors in series said parallel circuit module of connecting, the junction ground connection of said parallel circuit module and said first resistors in series.
Said parallel circuit module comprises two resistors, a voltage table; Said voltage table is first voltage table; Two said resistors are respectively first resistors in parallel, booster resistor; Said first resistors in parallel, booster resistor are parallelly connected with said first voltage table respectively, are provided with a key switch between said booster resistor and said first voltage table.
Said second voltage measuring apparatus comprises a voltmeter circuit module, a resistor; Said resistor is second resistors in series; The said second resistors in series said voltmeter circuit module of connecting, the junction ground connection of said voltmeter circuit module and said second resistors in series.
Said voltmeter circuit module comprises a resistor, a voltage table, and said voltage table is second voltage table, and said resistor is second resistors in parallel, and said second resistors in parallel is parallelly connected with said second voltage table.
The data output end of said first voltage table, second voltage table connects an AD converter respectively, and said AD converter connects said microprocessor system, and said microprocessor system connects the control end of said key switch.So that said microprocessor system measures calculating according to the data that said first voltage table, second voltage table record to the all-in resistance of parasitic loop module.
Also comprise a wireless communication module, data memory module, said wireless communication module, data memory module connect said microprocessor system respectively, and said microprocessor system connects a computing machine through said wireless communication module.
Beneficial effect: owing to adopt technique scheme; The utility model is measured the dc parameter of straight-flow system parasitic loop device through the parasitic loop electric resistance measuring apparatus through exchanging method of equal effects; Draw the resistance value of parasitic loop module; Can judge directly through this resistance value whether two DC power suppliers in the straight-flow system parasitic loop device are independent, thereby confirm the safe condition of whole straight-flow system.
Description of drawings
Fig. 1 is the integrated circuit synoptic diagram of the utility model;
Fig. 2 converts the ac equivalent circuit synoptic diagram into for the DC circuit of the utility model;
Fig. 3 is the local circuit synoptic diagram of the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand with effect and understand, below in conjunction with the further elaboration the utility model of concrete diagram.
With reference to Fig. 1, Fig. 2, Fig. 3, straight-flow system parasitic loop electric resistance measuring apparatus comprises a straight-flow system parasitic loop device 1, also comprises a parasitic loop electric resistance measuring apparatus 2, and parasitic loop electric resistance measuring apparatus 2 connects straight-flow system parasitic loop device 1.The utility model is measured straight-flow system parasitic loop device 1 in real time, thereby can draw the parasitic loop circuit total resistance value of straight-flow system parasitic loop device.When parasitic loop circuit total resistance value was shown as infinity, 1 operation of straight-flow system parasitic loop device was normal, when parasitic loop circuit total resistance value displayed value diminishes or be zero, shows that then straight-flow system parasitic loop device 1 breaks down.
Straight-flow system parasitic loop device 1 comprises two DC power suppliers, a parasitic loop module 13; Two DC power suppliers are parallelly connected with the parasitic loop module respectively; The DC power supplier that is positioned at parasitic loop module left side is first DC power supplier 11, and the DC power supplier that is positioned at parasitic loop module right side is second DC power supplier 12.Parasitic loop electric resistance measuring apparatus 2 comprises a microprocessor system 23, two voltage measuring apparatus, an AD converter 24; Two voltage measuring apparatus are respectively first voltage measuring apparatus 21, second voltage measuring apparatus 22; First voltage measuring apparatus 21 is parallelly connected with first DC power supplier 11, and second voltage measuring apparatus 22 is parallelly connected with second DC power supplier 12.The voltage of DC power supplier is a stationary value, in order to measure the resistance value of parasitic loop module, can straight-flow system parasitic loop device 1 be acted on through voltage measuring apparatus, and its dc parameter can be measured through exchanging method of equal effects.
First voltage measuring apparatus 21 comprises a parallelly connected circuit module, a resistor, and resistor is first resistors in series, the first resistors in series series and parallel circuit module, the junction ground connection of the parallel circuit module and first resistors in series.The parallel circuit module comprises two resistors, a voltage table; Voltage table is first voltage table; Two resistors are respectively first resistors in parallel, booster resistor; First resistors in parallel, booster resistor are parallelly connected with first voltage table respectively, are provided with a key switch between the booster resistor and first voltage table.Second voltage measuring apparatus 22 comprises a voltmeter circuit module, a resistor, and resistor is second resistors in series, the second resistors in series series voltage watch circuit module, the junction ground connection of the voltmeter circuit module and second resistors in series.The voltmeter circuit module comprises a resistor, a voltage table, and voltage table is second voltage table, and resistor is second resistors in parallel, and second resistors in parallel is parallelly connected with second voltage table.
The data output end of first voltage table, second voltage table connects an AD converter 24 respectively, and AD converter 24 connects the microprocessor system, and microprocessor system 23 connects the control end of key switch.So that microprocessor system 23 measures calculating according to the data that first voltage table, second voltage table record to the all-in resistance of parasitic loop module.As shown in Figure 2; DC circuit through with straight-flow system parasitic loop device 1 converts ac equivalent circuit into, can find the solution the all-in resistance of parasitic backflow module according to formula
.Also comprise a wireless communication module 3, data memory module 31, wireless communication module 3, data memory module 31 connect microprocessor system 23 respectively, and microprocessor system 23 connects a computing machine 4 through wireless communication module 3.
More than show and described ultimate principle of the utility model and the advantage of principal character and the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the instructions that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (9)
1. straight-flow system parasitic loop electric resistance measuring apparatus comprises a straight-flow system parasitic loop device, it is characterized in that, also comprises a parasitic loop electric resistance measuring apparatus, and said parasitic loop electric resistance measuring apparatus connects said straight-flow system parasitic loop device.
2. straight-flow system parasitic loop electric resistance measuring apparatus according to claim 1; It is characterized in that: said straight-flow system parasitic loop device comprises two DC power suppliers, a parasitic loop module; Two DC power suppliers are parallelly connected with said parasitic loop module respectively; The DC power supplier that is positioned at said parasitic loop module left side is first DC power supplier, and the DC power supplier that is positioned at said parasitic loop module right side is second DC power supplier.
3. straight-flow system parasitic loop electric resistance measuring apparatus according to claim 2; It is characterized in that: said parasitic loop electric resistance measuring apparatus comprises a microprocessor system, two voltage measuring apparatus, an AD converter; Two said voltage measuring apparatus are respectively first voltage measuring apparatus, second voltage measuring apparatus; Said first voltage measuring apparatus is parallelly connected with said first DC power supplier, and said second voltage measuring apparatus is parallelly connected with said second DC power supplier.
4. straight-flow system parasitic loop electric resistance measuring apparatus according to claim 3; It is characterized in that: said first voltage measuring apparatus comprises a parallelly connected circuit module, a resistor; Said resistor is first resistors in series; The said first resistors in series said parallel circuit module of connecting, the junction ground connection of said parallel circuit module and said first resistors in series.
5. straight-flow system parasitic loop electric resistance measuring apparatus according to claim 4; It is characterized in that: said parallel circuit module comprises two resistors, a voltage table; Said voltage table is first voltage table; Two said resistors are respectively first resistors in parallel, booster resistor, and said first resistors in parallel, booster resistor are parallelly connected with said first voltage table respectively, are provided with a key switch between said booster resistor and said first voltage table.
6. straight-flow system parasitic loop electric resistance measuring apparatus according to claim 5; It is characterized in that: said second voltage measuring apparatus comprises a voltmeter circuit module, a resistor; Said resistor is second resistors in series; The said second resistors in series said voltmeter circuit module of connecting, the junction ground connection of said voltmeter circuit module and said second resistors in series.
7. straight-flow system parasitic loop electric resistance measuring apparatus according to claim 6; It is characterized in that: said voltmeter circuit module comprises a resistor, a voltage table; Said voltage table is second voltage table; Said resistor is second resistors in parallel, and said second resistors in parallel is parallelly connected with said second voltage table.
8. straight-flow system parasitic loop electric resistance measuring apparatus according to claim 7; It is characterized in that: the data output end of said first voltage table, second voltage table connects an AD converter respectively; Said AD converter connects said microprocessor system, and said microprocessor system connects the control end of said key switch.
9. straight-flow system parasitic loop electric resistance measuring apparatus according to claim 8; It is characterized in that: also comprise a wireless communication module, data memory module; Said wireless communication module, data memory module connect said microprocessor system respectively, and said microprocessor system connects a computing machine through said wireless communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200972902U CN202502158U (en) | 2012-03-15 | 2012-03-15 | Direct current system parasitic circuit resistance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200972902U CN202502158U (en) | 2012-03-15 | 2012-03-15 | Direct current system parasitic circuit resistance measuring device |
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| Publication Number | Publication Date |
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| CN202502158U true CN202502158U (en) | 2012-10-24 |
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| CN2012200972902U Expired - Fee Related CN202502158U (en) | 2012-03-15 | 2012-03-15 | Direct current system parasitic circuit resistance measuring device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116108A (en) * | 2013-02-20 | 2013-05-22 | 山东电力集团公司烟台供电公司 | Intelligent detector for direct-current power supply system of transformer substation |
| CN103837744A (en) * | 2012-11-27 | 2014-06-04 | 中芯国际集成电路制造(上海)有限公司 | Method for measuring external parasitic resistance of MOS transistor |
| CN105186493A (en) * | 2015-08-31 | 2015-12-23 | 深圳供电局有限公司 | Method and system for rapid processing of parasitic defect between secondary circuits |
| CN111929613A (en) * | 2020-08-07 | 2020-11-13 | 中国南方电网有限责任公司超高压输电公司梧州局 | Same-section bus parasitic loop online monitoring device based on alternating current leakage current sensor |
-
2012
- 2012-03-15 CN CN2012200972902U patent/CN202502158U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837744A (en) * | 2012-11-27 | 2014-06-04 | 中芯国际集成电路制造(上海)有限公司 | Method for measuring external parasitic resistance of MOS transistor |
| CN103837744B (en) * | 2012-11-27 | 2016-05-25 | 中芯国际集成电路制造(上海)有限公司 | The measuring method of the ectoparasitism resistance of MOS transistor |
| CN103116108A (en) * | 2013-02-20 | 2013-05-22 | 山东电力集团公司烟台供电公司 | Intelligent detector for direct-current power supply system of transformer substation |
| CN105186493A (en) * | 2015-08-31 | 2015-12-23 | 深圳供电局有限公司 | Method and system for rapid processing of parasitic defect between secondary circuits |
| CN111929613A (en) * | 2020-08-07 | 2020-11-13 | 中国南方电网有限责任公司超高压输电公司梧州局 | Same-section bus parasitic loop online monitoring device based on alternating current leakage current sensor |
| CN111929613B (en) * | 2020-08-07 | 2021-09-14 | 中国南方电网有限责任公司超高压输电公司梧州局 | Same-section bus parasitic loop online monitoring device based on alternating current leakage current sensor |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20200315 |