CN106093582A - A kind of line parameter circuit value Dual-Ended Loop Test system and method synchronized based on GPS - Google Patents
A kind of line parameter circuit value Dual-Ended Loop Test system and method synchronized based on GPS Download PDFInfo
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- CN106093582A CN106093582A CN201610536531.1A CN201610536531A CN106093582A CN 106093582 A CN106093582 A CN 106093582A CN 201610536531 A CN201610536531 A CN 201610536531A CN 106093582 A CN106093582 A CN 106093582A
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- modular converter
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- end machine
- wiring
- gps
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/04—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant in circuits having distributed constants, e.g. having very long conductors or involving high frequencies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2605—Measuring capacitance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2611—Measuring inductance
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- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
nullThe invention provides a kind of line parameter circuit value Dual-Ended Loop Test system and method synchronized based on GPS，Can effectively realize the synchro measure of transmission line of electricity first and last end data parameter，The structure of line parameter circuit value Dual-Ended Loop Test system of the present invention includes head end machine and end machine，Described head end machine includes a CPU、First GPS module、Experiment power supply module、First wiring modular converter、Oneth A/D modular converter、First Signal-regulated kinase and the first voltage-current sensor，Described end machine includes the 2nd CPU、Second GPS module、Second wiring modular converter、2nd A/D modular converter、Secondary signal conditioning module and the second voltage-current sensor，Described line parameter circuit value Dual-Ended Loop Test method includes the output of experiment power supply、Wiring inversion operations、GPS module sends time data and pulse per second (PPS)、Data acquisition、Data preserve and data calculate.
Description
Technical field
The present invention relates to transmission line parameter technical field of measurement and test, a kind of line parameter circuit value pair synchronized based on GPS
End test system and method.
Background technology
Mutual impedance and coupling electric capacity between the positive order parameter of ultra-high-tension power transmission line and Zero sequence parameter and circuit are all electrical network weights
The systematic parameter wanted, Hyper-Voltage of Power Systems calculates, secondary arc current calculates, trend and stability Calculation, calculation of short-circuit current and continue
The basic parameter of electric protection adaptive setting etc., is the check of system for ultra-high voltage transmission primary equipment, relay protection dynamic simulative emulation
Basis with new principle relay protection development, the formulation of safe and stable operation control measure, method of operation analysis selection etc..Extra-high voltage
Transmission line of alternation current geographical environment on the way is complicated, is affected by kelvin effect and ground return circuit, and its power frequency parameter is difficult to by reason
Opinion accurately calculates.Operating standard (" aerial power transmission line construction and acceptance specification ", " 110 kilovolts and send power transformation capital construction above
Engineering startup control of acceptance ", " relay protection and automatic safety device operational management code " and " DL/T559-94 ", " DL/
T584-95 " etc.) regulation, transmission line of electricity newly-built, reconstruction after, it is necessary to actual measurement parameter after just can put into operation.
Electrical network dense degree is more and more higher, and common-tower double-return or multi circuit transmission lines become normality, the tight journey of coupling between circuit
Degree reaches unprecedented level, and the Hz noise electric current of electromagnetic coupled sensing can reach 100A, the need of high reliability electric energy supply
Ask so that by power failure reduce interference level increasingly be not easy operation, in traditional test method, use power frequency supply enter
The method of row test can not eliminate the interference impact on result of the test, uses the alien frequencies signal measurement of deviation Hz noise (50Hz)
Line parameter circuit value, the method separating useful alien frequencies test signal and interference signal at frequency domain is arisen at the historic moment.
Quickly growing of alternating current-direct current extra-high voltage grid, the particularly development of direct-current ultra high voltage transmission line of electricity so that power transmission line
Road length becomes normality more than 1000km.The impact of transmission line distributed constant makes to use alien frequencies method single-ended measurement transmission line of electricity
During power frequency parameter, its measurement result exist in engineering can not tolerance, alien frequencies method measures what long transmission line power frequency parameter produced
Measurement error beyond permissible range is a urgent problem.
Therefore, standard-required uses transmission line of electricity head end and the both-end method for synchronously measuring of end, obtains head end and end
Voltage, current effective value and phase angle, substitute into equation for transmission line and solve, thus accurately obtain parameters.
Summary of the invention
The invention provides a kind of line parameter circuit value Dual-Ended Loop Test system and method synchronized based on GPS, it is possible to effectively realize
The synchro measure of transmission line of electricity first and last end data parameter.
The structure of line parameter circuit value Dual-Ended Loop Test system of the present invention includes head end machine and end machine,
Described head end machine include a CPU, the first GPS module, experiment power supply module, the first wiring modular converter, first
A/D modular converter, the first Signal-regulated kinase and the first voltage-current sensor, described first GPS module, experiment power supply mould
Block, the first wiring modular converter, an A/D modular converter are connected with a CPU respectively, and the first voltage-current sensor connects simultaneously
Connecing the first Signal-regulated kinase and the first wiring modular converter, the first wiring modular converter is the most also with experiment power supply module the most even
Connect；
Described end machine include the 2nd CPU, the second GPS module, the second wiring modular converter, the 2nd A/D modular converter,
Binary signal conditioning module and the second voltage-current sensor, described second GPS module, the second wiring modular converter, the 2nd A/D turn
Die change block is connected with the 2nd CPU respectively, and the second voltage-current sensor is simultaneously connected with secondary signal conditioning module and the second wiring
Modular converter.
As preferably, described experiment power supply module is frequency conversion experiment power supply.
The step of line parameter circuit value Dual-Ended Loop Test method of the present invention is:
(1) CPU within head end machine is according to menu setting, control frequency conversion experiment power supply export default frequency and
Test voltage or electric current, complete the output of experiment power supply.
(2) first wiring modular converters, the second wiring modular converter receive a CPU and the test item of the 2nd CPU respectively
Mesh instructs, and carries out wiring switching operation.
(3) CPU in head end machine and the 2nd CPU in end machine receives the first GPS module and the 2nd GPS mould respectively
The time data of block offer and pulse per second (PPS), in the moment preengage by software, be respectively started an A/D when pulse per second (PPS) is along arrival and turn
Die change block and the 2nd A/D modular converter start simultaneously at data acquisition, obtain head end and the voltage of end, the A/D conversion value of electric current.
(4) after data acquisition completes, a CPU and the 2nd CPU carry out respectively data analysis and process obtain respective voltage,
Current effective value and phase angle also automatically save；
(5) after the data that head end machine and end machine preserve are directed respectively into host computer, host computer calculate, obtain defeated
The positive sequence impedance of electric line, positive sequence electric capacity, zero sequence impedance, zero sequence electric capacity, line mutual-inductance, coupling electric capacity.
Having the beneficial effects that of such scheme:
1, transmission line of electricity head end and the voltage of end, current effective value and phase angle, synchronization accuracy can be accurately detected
Height, provides data basis accurately and reliably for subsequent calculations；
2, the method for testing that can specify according to standard, is changed wiring, the data result obtained, is calculated by host computer
To order parameter and phase parameter, perfect means of testing.
3, utilize GPS module to head end machine and end machine sync identification, it is possible to ensure the data acquisition initial time at two ends
Precise synchronization, precision is better than 100ns.
Accompanying drawing explanation
Fig. 1 is the structural representation of line parameter circuit value Dual-Ended Loop Test system of the present invention.
Detailed description of the invention
Embodiments of the invention are described in detail below in conjunction with accompanying drawing.
As it is shown in figure 1, the structure of line parameter circuit value Dual-Ended Loop Test system of the present invention includes head end machine and end machine,
Described head end machine include a CPU, the first GPS module, frequency conversion experiment power supply, the first wiring modular converter, first
A/D modular converter, the first Signal-regulated kinase and the first voltage-current sensor, described first GPS module, frequency conversion test electricity
Source, the first wiring modular converter, an A/D modular converter are connected with a CPU respectively, and the first voltage-current sensor connects simultaneously
Connecing the first Signal-regulated kinase and the first wiring modular converter, the first wiring modular converter is the most also with frequency conversion experiment power supply the most even
Connect；
Described end machine include the 2nd CPU, the second GPS module, the second wiring modular converter, the 2nd A/D modular converter,
Binary signal conditioning module and the second voltage-current sensor, described second GPS module, the second wiring modular converter, the 2nd A/D turn
Die change block is connected with the 2nd CPU respectively, and the second voltage-current sensor is simultaneously connected with secondary signal conditioning module and the second wiring
Modular converter.
In said structure, the first GPS module and the second GPS module are respectively head end machine and end machine provides time data
With pulse per second (PPS) edge, it is achieved the synchronous acquisition of dual ended data, its error is better than 100ns, it is possible to the precision of test data is effectively ensured,
Reduce data and process error.
Data are program control puts in order to complete in data transmission procedure for first Signal-regulated kinase and secondary signal conditioning module
Greatly, filtering and impedance transformation.
Frequency conversion experimental power supply is in order to carry out the defeated of experiment power supply after the frequency instruction accepting a CPU and boost instruction
Go out.
The method utilizing above-mentioned line parameter circuit value Dual-Ended Loop Test system to carry out testing is as follows:
First, the CPU within head end machine, according to menu setting, controls frequency conversion experiment power supply and exports default frequency
With test voltage or electric current, completing the output of experiment power supply, the first wiring modular converter, the second wiring modular converter receive respectively
The test event instruction of the oneth CPU and the 2nd CPU, carries out wiring switching operation.
Then, the CPU in head end machine and the 2nd CPU in end machine receives the first GPS module and the 2nd GPS respectively
The time data of module offer and pulse per second (PPS), in the moment preengage by software, be respectively started an A/D in pulse per second (PPS) along when arriving
Modular converter and the 2nd A/D modular converter start simultaneously at data acquisition, obtain head end and the voltage of end, the A/D conversion of electric current
Value.After data acquisition completes, a CPU and the 2nd CPU carries out data analysis and process respectively, and to obtain respective voltage, electric current effective
Value and phase angle also automatically save；
Finally, after the data that head end machine and end machine preserve are directed respectively into host computer, host computer calculate, obtain
The positive sequence impedance of transmission line of electricity, positive sequence electric capacity, zero sequence impedance, zero sequence electric capacity, line mutual-inductance, coupling electric capacity.Specify according to standard
Method of testing, moreover it is possible to obtain the relevant parameters such as self-impedance, mutual impedance, capacitive coupling, direct-to-ground capacitance.
Use above-mentioned test system and method for testing, it is possible to the both-end strange land efficiently accomplishing long power transmission line distributed constant is surveyed
Amount, thus realize long power transmission line, including the same pacing in strange land of extra-high-voltage alternating current, the order parameter of DC power transmission line and phase parameter
Amount, can also realize, under conditions of 3 or 4 the transformer station's distributions of two back transmission lines, carrying out line mutual-inductance and coupling simultaneously
The test of electric capacity.Its detection parameter is many, and accuracy of detection is high, and data are reliable, and work efficiency effectively improves.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For Yuan, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (3)
1. the line parameter circuit value Dual-Ended Loop Test system synchronized based on GPS, it is characterised in that: include head end machine and end machine,
Described head end machine includes that a CPU, the first GPS module, experiment power supply module, the first wiring modular converter, an A/D turn
Die change block, the first Signal-regulated kinase and the first voltage-current sensor, described first GPS module, experiment power supply module, first
Wiring modular converter, an A/D modular converter are connected with a CPU respectively, and the first voltage-current sensor is simultaneously connected with first
Signal-regulated kinase and the first wiring modular converter, the first wiring modular converter is the most also connected with experiment power supply module；
Described end machine includes the 2nd CPU, the second GPS module, the second wiring modular converter, the 2nd A/D modular converter, the second letter
Number conditioning module and the second voltage-current sensor, described second GPS module, the second wiring modular converter, the 2nd A/D modulus of conversion
Block is connected with the 2nd CPU respectively, and the second voltage-current sensor is simultaneously connected with secondary signal conditioning module and the second wiring conversion
Module.
The line parameter circuit value Dual-Ended Loop Test system synchronized based on GPS the most according to claim 1, it is characterised in that: described examination
Electrical verification source module is frequency conversion experiment power supply.
3. the line parameter circuit value Dual-Ended Loop Test method synchronized based on GPS, it is characterised in that comprise the steps:
(1) CPU within head end machine is according to menu setting, controls frequency conversion experiment power supply and exports default frequency and test
Voltage or electric current, complete the output of experiment power supply；
(2) first wiring modular converters, the second wiring modular converter receive the test event of a CPU and the 2nd CPU respectively and refer to
Order, carries out wiring switching operation；
(3) CPU in head end machine and the 2nd CPU in end machine receives the first GPS module respectively and the second GPS module carries
The time data of confession and pulse per second (PPS), in the moment preengage by software, be respectively started an A/D modulus of conversion in pulse per second (PPS) along when arriving
Block and the 2nd A/D modular converter start simultaneously at data acquisition, obtain head end and the voltage of end, the A/D conversion value of electric current；
(4), after data acquisition completes, a CPU and the 2nd CPU carries out data analysis and process respectively and obtains respective voltage, electric current
Virtual value and phase angle also automatically save；
(5) after the data that head end machine and end machine preserve are directed respectively into host computer, host computer calculate, obtain power transmission line
The positive sequence impedance on road, positive sequence electric capacity, zero sequence impedance, zero sequence electric capacity, line mutual-inductance, coupling electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610536531.1A CN106093582A (en) | 2016-07-08 | 2016-07-08 | A kind of line parameter circuit value Dual-Ended Loop Test system and method synchronized based on GPS |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610536531.1A CN106093582A (en) | 2016-07-08 | 2016-07-08 | A kind of line parameter circuit value Dual-Ended Loop Test system and method synchronized based on GPS |
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| CN106093582A true CN106093582A (en) | 2016-11-09 |
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| CN201610536531.1A Pending CN106093582A (en) | 2016-07-08 | 2016-07-08 | A kind of line parameter circuit value Dual-Ended Loop Test system and method synchronized based on GPS |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841873A (en) * | 2017-02-20 | 2017-06-13 | 武汉大洋义天科技股份有限公司 | Based on the synchronous DC power transmission line frequency characteristic Dual-Ended Loop Test system and methods of GPS |
| CN109283483A (en) * | 2018-11-20 | 2019-01-29 | 中国电力科学研究院有限公司 | A kind of automatic calibration of electric energy meter system connects take out stitches success rate test method and device |
| CN109655710A (en) * | 2018-12-03 | 2019-04-19 | 国网江苏省电力有限公司检修分公司 | Double circuits on same tower transmission line of electricity both ends measure the bearing calibration of phasor, apparatus and system |
| CN109813990A (en) * | 2019-03-21 | 2019-05-28 | 山西晋电电力科技有限公司电网技术分公司 | Transmission line parameter tests security protection platform |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419254A (en) * | 2008-12-17 | 2009-04-29 | 河南电力试验研究院 | Uhv transmission line parameter measuring systems and method |
| CN103424627A (en) * | 2013-08-21 | 2013-12-04 | 国家电网公司 | Method for measuring zero-sequence impedance of parallel distribution network circuit at double ends |
| CN103698625A (en) * | 2013-11-22 | 2014-04-02 | 国家电网公司 | Portable line parameter measurement method |
| US20150019156A1 (en) * | 2012-02-28 | 2015-01-15 | Jiangxi electric power science research institute | Multi-Node Synchronous On-Site Test Method |
| CN105388355A (en) * | 2015-12-03 | 2016-03-09 | 国家电网公司 | Ground screen shunting vector test system and method with GPS synchronization |
| CN205749680U (en) * | 2016-07-08 | 2016-11-30 | 武汉大洋义天科技股份有限公司 | A kind of line parameter circuit value Dual-Ended Loop Test system synchronized based on GPS |
-
2016
- 2016-07-08 CN CN201610536531.1A patent/CN106093582A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419254A (en) * | 2008-12-17 | 2009-04-29 | 河南电力试验研究院 | Uhv transmission line parameter measuring systems and method |
| US20150019156A1 (en) * | 2012-02-28 | 2015-01-15 | Jiangxi electric power science research institute | Multi-Node Synchronous On-Site Test Method |
| CN103424627A (en) * | 2013-08-21 | 2013-12-04 | 国家电网公司 | Method for measuring zero-sequence impedance of parallel distribution network circuit at double ends |
| CN103698625A (en) * | 2013-11-22 | 2014-04-02 | 国家电网公司 | Portable line parameter measurement method |
| CN105388355A (en) * | 2015-12-03 | 2016-03-09 | 国家电网公司 | Ground screen shunting vector test system and method with GPS synchronization |
| CN205749680U (en) * | 2016-07-08 | 2016-11-30 | 武汉大洋义天科技股份有限公司 | A kind of line parameter circuit value Dual-Ended Loop Test system synchronized based on GPS |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841873A (en) * | 2017-02-20 | 2017-06-13 | 武汉大洋义天科技股份有限公司 | Based on the synchronous DC power transmission line frequency characteristic Dual-Ended Loop Test system and methods of GPS |
| CN109283483A (en) * | 2018-11-20 | 2019-01-29 | 中国电力科学研究院有限公司 | A kind of automatic calibration of electric energy meter system connects take out stitches success rate test method and device |
| CN109655710A (en) * | 2018-12-03 | 2019-04-19 | 国网江苏省电力有限公司检修分公司 | Double circuits on same tower transmission line of electricity both ends measure the bearing calibration of phasor, apparatus and system |
| CN109655710B (en) * | 2018-12-03 | 2020-12-01 | 国网江苏省电力有限公司检修分公司 | Correction method, device and system for phasor measurement at two ends of same-pole double-circuit transmission line |
| CN109813990A (en) * | 2019-03-21 | 2019-05-28 | 山西晋电电力科技有限公司电网技术分公司 | Transmission line parameter tests security protection platform |
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Application publication date: 20161109 |