CN109444787A - A kind of method and apparatus that DTU/FTU measurement voltage value accuracy remotely judges - Google Patents

A kind of method and apparatus that DTU/FTU measurement voltage value accuracy remotely judges Download PDF

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Publication number
CN109444787A
CN109444787A CN201811574025.7A CN201811574025A CN109444787A CN 109444787 A CN109444787 A CN 109444787A CN 201811574025 A CN201811574025 A CN 201811574025A CN 109444787 A CN109444787 A CN 109444787A
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CN
China
Prior art keywords
voltage value
dtu
ftu
point
standard
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Pending
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CN201811574025.7A
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Chinese (zh)
Inventor
李维
王洪林
宋忧乐
王科
聂鼎
董涛
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Electric Power Research Institute of Yunnan Power System Ltd
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Electric Power Research Institute of Yunnan Power System Ltd
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Priority to CN201811574025.7A priority Critical patent/CN109444787A/en
Publication of CN109444787A publication Critical patent/CN109444787A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
    • G01R35/007—Standards or reference devices, e.g. voltage or resistance standards, "golden references"

Abstract

This application discloses the method and apparatus that a kind of DTU/FTU measurement voltage value accuracy remotely judges, wherein method includes the actual voltage value by the major network gathering line each DTU/FTU in road；Select any one DTU/FTU as reference point, the voltage value of the externally measured acquisition reference point is as reference voltage；The standard pressure drop between DTU/FTU point and the reference point is calculated, the standard voltage value of DTU/FTU point is calculated according to standard pressure drop, calculates the deviation between the actual voltage value and standard voltage value of DTU/FTU point.The accuracy of the size reaction DTU/FTU for the deviation between actual voltage value and standard voltage value that this method passes through DTU/FTU point, pass through the actual voltage value of each DTU/FTU on remote collection route, and the standard voltage value of DTU/FTU point is collected by the way of calculating, it does not need to carry out hot line job to line facility, to avoid causing security risk to route stable operation.

Description

A kind of method and apparatus that DTU/FTU measurement voltage value accuracy remotely judges
Technical field
This application involves measurement of power detection technique field more particularly to a kind of DTU/FTU measurement voltage value are accurate Spend the method and apparatus remotely judged.
Background technique
With the continuous development of distribution network technology, application of the feed line automatization terminal in transformation and distribution system is more and more wider It is general, it is important electric energy operation monitoring and measuring equipment.Important equipment of the DTU/FTU as acquisition track data, equipment are adopted It is particularly important to collect precision.
Existing detection means mainly detects specified point or region with the method for contact, this needs tester There are detailed understanding, and careful comprehensive detection to environment mesohigh route and possible electric leakage region, examines DTU/FTU measurement The accuracy of data.
But the method for the prior art needs to carry out hot line job to line facility, is easy to cause route stable operation Security risk, and artificial detection causes working efficiency low.
Summary of the invention
It is existing to solve this application provides the method and apparatus that a kind of DTU/FTU measurement voltage value accuracy remotely judges Have and detects the technical issues of accuracy of DTU/FTU DATA REASONING voltage value causes security risk to route stable operation in technology.
In order to solve the above-mentioned technical problem, the embodiment of the present application discloses following technical solution:
In a first aspect, the embodiment of the present application discloses a kind of method that DTU/FTU measurement voltage value accuracy remotely judges, It include: that U is denoted as by the actual voltage value of the major network gathering line each DTU/FTU in roadcx；
Select any one DTU/FTU as reference point；
The voltage value of the reference point is acquired as reference voltage, is denoted as Uj；
The standard pressure drop between DTU/FTU point and the reference point is calculated, Δ U is denoted as；
The standard voltage value that DTU/FTU point is calculated according to standard pressure drop, is denoted as Ubx；
Calculate the deviation between the actual voltage value and standard voltage value of DTU/FTU point, calculation formula are as follows:
UΔx=Ucx- Ubx
Wherein, UΔxIndicate the deviation between actual voltage value and standard voltage value, UcxThe actual voltage value of the point is represented, UbxRepresent the standard voltage value of the point.
Optionally, the calculation formula of the standard pressure drop are as follows:
Δ U=(P*L)/(A*S) (1)
Wherein, P indicates line load in formula (1), and L indicates DTU/FTU point at a distance from the reference point, and A is indicated The material coefficient of cable inner conductor, S indicate that the area of section of cable, Δ U indicate the standard pressure drop of DTU/FTU point.
Optionally, the calculation formula of the standard voltage value are as follows:
Ubx=UjΔ U (2)
Wherein, U in formula (2)bxRepresent the standard voltage value of DTU/FTU point, UjRepresent the reference data voltage, Δ U table Show the standard pressure drop of DTU/FTU point.
Optionally, the mode of the voltage value of the acquisition reference point is the measurement of external contact formula.
Second aspect, the embodiment of the present application disclose a kind of device that DTU/FTU measurement voltage value accuracy remotely judges, It include: control module, communication module, display module, the communication module, the display module are electric with the control module respectively Connection；The communication module and major network communicate to connect, the actual voltage value of each DTU/FTU of gathering line road；The display The underlying parameter of module input cable；The control module is completed to carry out at operation collected data and the underlying parameter Reason calculates the deviation between actual voltage value and standard voltage value.
Optionally, the underlying parameter includes the material coefficient of cable inner conductor, the area of section of cable, DTU/FTU Point is at a distance from reference point, the reference voltage of line load, reference point.
Optionally, the device that the DTU/FTU measurement voltage value accuracy remotely judges further includes power module, the electricity Source module is electrically connected with the control module, the communication module, the display module, external power supply respectively, provides work electricity Source.
Compared with prior art, the application has the beneficial effect that
This application provides the method and apparatus that a kind of DTU/FTU measurement voltage value accuracy remotely judges, wherein method Including the actual voltage value by each DTU/FTU in major network gathering line road；Select any one DTU/FTU as reference data Point, the voltage value of the externally measured acquisition reference point is as reference voltage；Calculate DTU/FTU point and the reference data Standard pressure drop between point calculates the standard voltage value of DTU/FTU point according to standard pressure drop, calculates the virtual voltage of DTU/FTU point Deviation between value and standard voltage value.It is inclined between the actual voltage value and standard voltage value that this method passes through DTU/FTU point The accuracy of the size reaction DTU/FTU of difference, by the actual voltage value of each DTU/FTU on remote collection route, and it is right The standard voltage value of DTU/FTU point is collected by the way of calculating, and does not need to carry out hot line job to line facility, thus It avoids causing security risk to route stable operation.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not The application can be limited.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the method signal that a kind of DTU/FTU provided by the embodiments of the present application measures that voltage value accuracy remotely judges Figure；
Fig. 2 is the device signal that a kind of DTU/FTU provided by the embodiments of the present application measures that voltage value accuracy remotely judges Figure.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation Example is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, the common skill in this field The application protection all should belong in art personnel every other embodiment obtained without making creative work Range.
Embodiment one
Referring to Fig. 1, for a kind of method that DTU/FTU measurement voltage value accuracy remotely judges provided by the embodiments of the present application Schematic diagram, the method that DTU/FTU measurement voltage value accuracy provided by the embodiments of the present application remotely judges include:
By the actual voltage value of the major network gathering line each DTU/FTU in road, it is denoted as Ucx, by obtaining line with major network connection The actual voltage value of the DTU/FTU acquisition of road does not need running equipment power failure detection, and functional arrangement equipment, can not grasp remotely It completes, security risk will not be caused to route stable operation because of data collection task.
Select any one DTU/FTU as reference point；The voltage value of the reference point is acquired as benchmark Voltage is denoted as Uj.Optionally, the mode of the voltage value of the acquisition reference point is the measurement of external contact formula, so that The reference voltage value of acquisition is more accurate.
The standard pressure drop between DTU/FTU point and the reference point is calculated, Δ U is denoted as.The calculating of the standard pressure drop Formula are as follows:
Δ U=(P*L)/(A*S) (1)
Wherein, P indicates line load in formula (1), and L indicates DTU/FTU point at a distance from the reference point, and A is indicated The material coefficient of cable inner conductor, S indicate that the area of section of cable, Δ U indicate the standard pressure drop of DTU/FTU point.
The standard voltage value that DTU/FTU point is calculated according to standard pressure drop, is denoted as Ubx, calculation formula are as follows:
Ubx=UjΔ U (2)
Wherein, U in formula (2)bxRepresent the standard voltage value of DTU/FTU point, UjRepresent the reference data voltage, Δ U table Show the standard pressure drop of DTU/FTU point.
Calculate the deviation between the actual voltage value and standard voltage value of DTU/FTU point, calculation formula are as follows:
UΔx=Ucx- Ubx
Wherein, UΔxIndicate the deviation between actual voltage value and standard voltage value, UcxThe actual voltage value of the point is represented, UbxRepresent the standard voltage value of the point.The size of deviation between the actual voltage value and standard voltage value of the DTU/FTU point Directly react the voltage value accuracy of DTU/FTU DATA REASONING.Deviation is bigger, shows DTU/FTU DATA REASONING voltage value accuracy It is poorer；Conversely, deviation is smaller, show that DTU/FTU DATA REASONING voltage value accuracy is better.
The size for the deviation between actual voltage value and standard voltage value that this method passes through DTU/FTU point reacts DTU/ The accuracy of FTU, by the actual voltage value of each DTU/FTU on remote collection route, and to the normal voltage of DTU/FTU point Value is collected by the way of calculating, and does not need to carry out hot line job to line facility, to avoid to route stable operation Cause security risk.
Embodiment two
As shown in connection with fig. 2, a kind of DTU/FTU measurement voltage value accuracy provided by the embodiments of the present application remotely judges Schematic device.The device that a kind of DTU/FTU measurement voltage value accuracy provided by the embodiments of the present application remotely judges includes: control Molding block, communication module, display module, power module, the communication module, the display module respectively with the control module Electrical connection；The communication module and major network communicate to connect, the actual voltage value of each DTU/FTU of gathering line road；It is described aobvious Show the underlying parameter of module input cable；The control module is completed to carry out operation to collected data and the underlying parameter Processing calculates the deviation between actual voltage value and standard voltage value.The power module respectively with the control module, described Communication module, the display module, external power supply electrical connection, are the control module, the communication module, the display module Working power is provided.
Utilize the communication module access major network gathering line each DTU/FTU actual voltage value U in roadcx；It selects any one A DTU/FTU is as reference point；The reference point is acquired by extraneous means in the reference point position Voltage value is denoted as U as reference voltagej.The mode of the voltage value of the acquisition reference point is the survey of external contact formula The method of amount.
The underlying parameter of cable is inputted by the display module；Wherein the underlying parameter includes cable inner conductor Material coefficient, the area of section of cable, DTU/FTU point are at a distance from the reference point, line load, reference point Reference voltage.
The control module is completed to carry out calculation process to collected data and the underlying parameter, calculates virtual voltage Deviation between value and standard voltage value.
Specifically, including: the calculation formula by the route benchmark pressure drop editted in control module:
Δ U=(P*L)/(A*S) (1)
Wherein, P indicates line load in formula (1), and L indicates DTU/FTU point (DTU/ at a distance from the reference point FTU point is positive with respect to reference point toward direction of tide, otherwise is negative value), A indicates the material coefficient of cable inner conductor, and S indicates line The area of section of cable, Δ U indicate the standard pressure drop of DTU/FTU point；Any DTU/FTU and reference can be calculated by formula (1) Standard pressure drop between point.
The standard voltage value of the DTU/FTU point is calculated by standard pressure drop for control module, calculation formula such as formula (2):
Ubx=UjΔ U (2)
Wherein, U in formula (2)bxRepresent the standard voltage value of DTU/FTU point, UjThe reference voltage is represented, Δ U is indicated The standard pressure drop of DTU/FTU point.
By the calculation formula that is editted in control module calculate DTU/FTU point actual voltage value and standard voltage value it Between deviation, calculation formula are as follows:
UΔx=Ucx- Ubx (3)
Wherein, U in formula (3)ΔxIndicate the deviation between actual voltage value and standard voltage value, UcxRepresent the reality of the point Voltage value, UbxRepresent the standard voltage value of the point.
The device that DTU/FTU provided by the embodiments of the present application measurement voltage value accuracy remotely judges include: control module, Communication module, display module, the communication module, the display module are electrically connected with the control module respectively；The communication Module and major network communicate to connect, the actual voltage value of each DTU/FTU of gathering line road；The display module input cable Underlying parameter；The control module is completed to carry out calculation process to collected data and the underlying parameter, calculates practical electricity Deviation between pressure value and standard voltage value.Pass through the deviation between the actual voltage value and standard voltage value of DTU/FTU point Size reacts the accuracy of DTU/FTU, by the actual voltage value of each DTU/FTU on remote collection route, and to DTU/FTU The standard voltage value of point is not needed using collecting by the way of calculating to line facility progress hot line job, to avoid pair Route stable operation causes security risk.
It should be noted that the terms "include", "comprise" or its any other variant are intended in the present specification Non-exclusive inclusion, so that the circuit structure, article or the equipment that include a series of elements not only include those elements, It but also including other elements that are not explicitly listed, or further include solid by this circuit structure, article or equipment Some elements.In the absence of more restrictions, the element for thering is sentence "including a ..." to limit, it is not excluded that including There is also other identical elements in the circuit structure of the element, article or equipment.
Those skilled in the art will readily occur to its of the application after considering specification and practicing the disclosure invented here His embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are wanted by right The content asked is pointed out.
Above-described the application embodiment does not constitute the restriction to the application protection scope.

Claims (7)

1. a kind of method that DTU/FTU measurement voltage value accuracy remotely judges characterized by comprising
By the actual voltage value of the major network gathering line each DTU/FTU in road, it is denoted as Ucx；
Select any one DTU/FTU as reference point；
The voltage value of the reference point is acquired as reference voltage, is denoted as Uj；
The standard pressure drop between DTU/FTU point and the reference point is calculated, Δ U is denoted as；
The standard voltage value that DTU/FTU point is calculated according to standard pressure drop, is denoted as Ubx；
Calculate the deviation between the actual voltage value and standard voltage value of DTU/FTU point, calculation formula are as follows:
UΔx=Ucx- Ubx
Wherein, UΔxIndicate the deviation between actual voltage value and standard voltage value, UcxRepresent the actual voltage value of the point, UbxGeneration The standard voltage value of the table point.
2. the method that DTU/FTU measurement voltage value accuracy according to claim 1 remotely judges, which is characterized in that institute State the calculation formula of standard pressure drop are as follows:
Δ U=(P*L)/(A*S) (1)
Wherein, P indicates line load in formula (1), and L indicates DTU/FTU point at a distance from the reference point, and A indicates cable The material coefficient of inner conductor, S indicate that the area of section of cable, Δ U indicate the standard pressure drop of DTU/FTU point.
3. the method that DTU/FTU measurement voltage value accuracy according to claim 1 remotely judges, which is characterized in that institute State the calculation formula of standard voltage value are as follows:
Ubx=UjΔ U (2)
Wherein, U in formula (2)bxRepresent the standard voltage value of DTU/FTU point, UjThe reference voltage is represented, Δ U indicates DTU/FTU The standard pressure drop of point.
4. the method that DTU/FTU measurement voltage value accuracy according to claim 1 remotely judges, which is characterized in that institute Stating and acquiring the mode of the voltage value of the reference point is the measurement of external contact formula.
5. a kind of device that DTU/FTU measurement voltage value accuracy remotely judges characterized by comprising control module (1), Communication module, display module, the communication module, the display module are electrically connected with the control module respectively；The communication Module and major network communicate to connect, the actual voltage value of each DTU/FTU of gathering line road；The display module input cable Underlying parameter；The control module is completed to carry out calculation process to collected data and the underlying parameter, calculates practical electricity Deviation between pressure value and standard voltage value.
6. the device that DTU/FTU measurement voltage value accuracy according to claim 5 remotely judges, which is characterized in that institute State underlying parameter include the material coefficient of cable inner conductor, the area of section of cable, DTU/FTU point and reference point away from From, the reference voltage of line load, reference point.
7. the device that DTU/FTU measurement voltage value accuracy according to claim 5 remotely judges, which is characterized in that also Including power module, the power module respectively with the control module, the communication module, the display module, external electrical Source electrical connection.
CN201811574025.7A 2018-12-21 2018-12-21 A kind of method and apparatus that DTU/FTU measurement voltage value accuracy remotely judges Pending CN109444787A (en)

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* Cited by examiner, † Cited by third party
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CN103268524A (en) * 2013-06-03 2013-08-28 国家电网公司 Method for improving power grid short-term load forecasting accuracy
JP2016095295A (en) * 2014-11-07 2016-05-26 トヨタ自動車株式会社 Calibration method of charge and discharge testing device
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CN106405264A (en) * 2016-05-16 2017-02-15 希格玛电气(珠海)有限公司 Automatic terminal DTU test device
CN106680753A (en) * 2017-01-05 2017-05-17 云南电网有限责任公司电力科学研究院 DC current transformer accuracy level test method, system and apparatus
CN107202932A (en) * 2017-07-24 2017-09-26 国网山东省电力公司桓台县供电公司 Measuring and calculating is combined power system voltage quality test system and method with remote testing
CN107741577A (en) * 2017-08-04 2018-02-27 国网辽宁省电力有限公司电力科学研究院 A kind of Source of Gateway Meter degree of accuracy on-line monitoring and analysis method and system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101424728A (en) * 2008-11-10 2009-05-06 西北电网有限公司 On site precision detecting test line for high-voltage current transformer
CN103268524A (en) * 2013-06-03 2013-08-28 国家电网公司 Method for improving power grid short-term load forecasting accuracy
JP2016095295A (en) * 2014-11-07 2016-05-26 トヨタ自動車株式会社 Calibration method of charge and discharge testing device
CN205608171U (en) * 2016-01-28 2016-09-28 云南电网有限责任公司电力科学研究院 Digital electric energy measurement system's testing arrangement
CN106405264A (en) * 2016-05-16 2017-02-15 希格玛电气(珠海)有限公司 Automatic terminal DTU test device
CN106680753A (en) * 2017-01-05 2017-05-17 云南电网有限责任公司电力科学研究院 DC current transformer accuracy level test method, system and apparatus
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Application publication date: 20190308