CN104635015B - Super-grid and current on-load detection device - Google Patents
Super-grid and current on-load detection device Download PDFInfo
- Publication number
- CN104635015B CN104635015B CN201510060234.XA CN201510060234A CN104635015B CN 104635015 B CN104635015 B CN 104635015B CN 201510060234 A CN201510060234 A CN 201510060234A CN 104635015 B CN104635015 B CN 104635015B
- Authority
- CN
- China
- Prior art keywords
- current
- phase
- voltage
- amplitude
- electric current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention relates to a super-grid and current on-load detection device. The super-grid and current on-load detection device is provided with an SY3001 intelligent three-phase volt-ampere meter; a three-path voltage input channel and six paths of current input channel are arranged in the volt-ampere meter; one end of each current input channel is connected with a split core type current transformer; a six-phase current signal receiving, processing and storing unit, a current signal receiving, processing and storing unit, a voltage current display interface and a current display interface are arranged in a voltage-current signal processing module arranged in the volt-ampere meter. By adopting the device, the problem that sum current cannot be detected in field on-load detection can be solved effectively, the active power value and the idle power value of the sum current can be measured, calculated and displayed accurately; an intuitional and clear judgment on whether the amplitude and phase of six-phase current as well as the amplitude and the phase of synthesized sum current are correct or not can be made, the field on-load detection time is shortened, and the working efficiency is increased. The super-grid and current on-load detection device has the advantages of simple and reasonable structural design, convenience in use, reliable performance, and the like.
Description
Technical field
The invention belongs to relay protection of power system detection technique field, particularly a kind of supergrid and current strap are negative
Lotus detection means.
Background technology
In 500 kilovolts and above supergrid system, frequently with 3/2nds main wiring modes, and relay protection is
Protection supergrid equipment, therefore it will adopt two groups of electric currents according to the object, scope protected as protection device, and
This two groups of electric currents connect together in actual second loop return wiring, then access protection device, material is thus formed two
The sum of road electric current, i.e., so-called and electric current.
Onload examination be in relay protection of power system specialty work on the spot Jing frequently with means of testing, it is main to be suitable for
In new installation or the protective relaying device of the larger changes of equipment loop Jing, before it puts into operation, it is necessary to carry out on-load inspection
Look into.The main purpose of the inspection is phase sequence, the width by measuring a transmission line of electricity or the real-time secondary current of main transformer
Value and the phase relation with voltage, and contrasted with the load uncertainty of transmission line of electricity or main transformer, so as to judge that relay is protected
Whether the polarity of shield secondary circuit, phase sequence are correct, and can protective relaying device put into operation, thus it is inspection protective relaying device energy
One link of the no most critical that correctly puts into operation.
Traditional relay protection inspection method is to measure electric current with the phase relation of voltage to determine by single-phase pincerlike meter
Whether the polarity of relay protection secondary circuit, phase sequence are correct.But this inspection method can only be surveyed between single electric current and voltage
Phase relation, be currently respectively to measure two groups of electric currents for the inspection with electric current, then again to measure data close
Into calculating.Due to 500 kilovolts and Above Transmission Lines load uncertainty fluctuation it is larger, trend in the same time is not all different；Simultaneously
Reactive power（Capacitive or perception）Also certain ratio is accounted for, causes the angular deviation of two groups of electric currents very big, two groups in this case
Electric current after synthesis is not just simply to add and subtract relation.Existence time successively, causes measure error, data if measuring respectively
It is inaccurate；And it is big due to data are carried out with composite calulation amount, take very much, it is impossible to rapidly reach a conclusion, thus have impact on
The bringing normally into operation of equipment, also brings potential safety hazard to system operation.
At present, the SY3001 intelligent three-phases phase voltammetric meter of appearance is carried out using high-precision adc and DSP technologies
Measurement, three tunnel control source passage mutually insulateds isolation, three road electric currents are input into using split core type current transformer, can be
The amplitude and its phase place respectively between amount of in the case of not turning off circuit-under-test while 1～3 road of measurement and 1～3 road alternating current,
Frequency；Measurement list/three phase power and power factor.Meanwhile, the volt ampere meter is using based on the operations of Windows Mobile 5.0 system
The embedded palm PC of system is operated and data processing, is provided with three-phase voltage, the graphic interface of electric current relevant parameter, and
Shown with vectogram or form with screen, touch screen operation, Chinese character hand-written input, man-machine interface is friendly, is known as epoch-making
Intelligent in-site measurement instrument.But, the inspection of the technology pair and electric current is remained and respectively measures two groups of electric currents, then right again
The data of measurement carry out composite calulation.Measure error, data is caused to be forbidden by time of measuring priority difference, and data are closed
Into it is computationally intensive the problems such as be not resolved yet.
The content of the invention
It is an object of the invention to provide one kind can be efficiently solved can not accurately detect and electricity in live on-load detection
The problem of stream, can accurately measure, calculate, showing active power and reactive power value with electric current, directly perceived, clearly judge
Whether correct go out after six phase current magnitudes, phase place, and synthesis and electric current amplitude, phase place, shorten live on-load detection
Time, improve the supergrid and current on-load detector of operating efficiency.
Realize that the purpose of the present invention is adopted the technical scheme that：The detection means has a SY3001 intelligent three-phase phase
Position volt ampere meter, is provided with touching type operation display screen in the volt ampere meter, volt ampere meter has been embedded in Windows Mobile 5.0 and has operated
System, is provided with three road information of voltage input channels and voltage, current information process in the operating systems of Windows Mobile 5.0
Module, wherein, 6 road current signal input channels are provided with SY3001 intelligent three-phase phase voltammetric meters, current signal input is logical
The one end in road is respectively connected with split core type current transformer, is provided with voltage, current information processing module：
One six phase current signal is received, processed and memory cell, for the computing of monophase current amplitude, phase place and power
Process；
One and current information process and memory cell, for the calculation process with current amplitude, phase place and power；
One voltage and six phase current information display interfaces, for show the amplitude of three-phase voltage and six phase currents, phase place,
Active power, reactive power and phasor diagram；
One and current information display interface, for show and the amplitude of electric current, phase place, active power, reactive power and
The phasor diagram of voltage and current.
According to supergrid made by such scheme and current on-load detector, live band can be efficiently solved
Can not check the problem with electric current in cutting load testing, and can accurately measure, calculate, showing active power and nothing with electric current
Whether work(performance number, intuitively, clearly judge after six phase current magnitudes, phase place, and synthesis and electric current amplitude, phase place
Correctly, shorten live on-load detection time, improve operating efficiency.Simultaneously the device has structure design advantages of simple, uses
Conveniently, the advantages of dependable performance.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is voltage and six phase current display interface schematic diagrames；
Fig. 3 is and electric current display interface schematic diagram.
Specific embodiment
Referring to Fig. 1, the supergrid and current on-load detector of the present invention have a SY3001 intelligent three-phase
Phase voltammetric meter 1, the volt ampere meter is embedded with the operating systems of Windows Mobile 5.0, is provided with touching type operation display screen 2, and
Thus palm PC is constituted, the calculation process of touch operation and data can be carried out, man-machine interface is friendly, and software upgrading is convenient, should
SY3001 intelligent three-phases phase voltammetric meter 1 can directly be purchased in market.3 are provided with SY3001 intelligent three-phases phase voltammetric meter 1
The information of voltage input channel and 6 road current signal input channels of road mutually insulated isolation.6 road current signal input channel difference
Correspondence be connected with split core type current transformer 3, can be connected with the wiring of relay protection secondary circuit 5 respectively, can not turn off it is tested
Detect six phase currents in secondary current loop in the case of circuit simultaneously, label 4,6 is supergrid bus in figure.
Voltage, current information processing module are imported with SY3001 intelligent three-phases phase voltammetric meter 1, one six mutually electricity is provided with the module
Stream signal is received, processed and memory cell, can carry out six phase current magnitudes in secondary circuit, the calculation process of phase place, is calculated
Single-phase or six phase power and power factor；And by voltage, current information processing module on the basis of voltage, automatically by following formulas
Calculate the corresponding active power of two group of six phase current and reactive power value；P=UIcos Φ, Q=UIsinΦ（P in formula
Active power is represented, Q represents reactive power, and U represents a sub-value of test line voltage, and I represents test line electric current once
The sub-value of value one, Φ represents the phase angle of tested electric current）.One and electric current letter are additionally provided with voltage, current information processing module
Breath is processed and memory cell, for the calculating of three-phase and electric current, calculates the amplitude and phase with electric current automatically by following formulas
Position：If two groups of certain phase currents connected with each other are respectively i1, i2, and electric current is ih, wherein：
i1 =I1Sin ω t A, i2=I2Sin (ω t+ψ) A,
It is then I with the amplitude of electric currenth=,
It is ψ with the angle of electric currenth =tg-1 ,
It is with electric current then：ih = i1+ i2 =Ihsin((ωt +ψh)A
In above-mentioned formula, I1、 I2A sub-value of test line electric current is represented respectively, and ω, ψ represent that respectively t is represented by survey line
The phase angle of road electric current.
Then, then on the basis of voltage, the active power and reactive power value with electric current, P are calculatedh=UIcos Φ, Qh
=UIsinΦ（In formula, PhRepresent the active power with electric current, QhRepresent the reactive power and the wattful power of electric current with electric current
Rate, U represents a sub-value of test line voltage, and I represents a sub-value of test line electric current, and Φ represents the phase of test line electric current
Parallactic angle）.
A voltage and six phase current information display interfaces are provided with voltage, current information processing module（Referring to Fig. 2）,
Three-phase voltage, the amplitude of two group of six phase current and phase place can be in real time shown, while being provided with " voltage change ratio " and " electric current no-load voltage ratio " choosing
, can respectively show a sub-value of three-phase voltage and six phase currents.
One and current information display interface are additionally provided with voltage, current information processing module（Referring to Fig. 3）, for showing
Show and the amplitude of electric current, phase place and active power and reactive power, be achieved in detection moment it is consistent and current amplitude, phase place
Display, while being additionally provided with " electric current no-load voltage ratio " option in current information display interface, the sub-value with electric current can be shown.
When detecting to protective relaying device, if by the clamp of 6 split core type current transformers 3 be connected to respectively by
Survey on each phase connection of relay protection secondary circuit 5, and by the touch operation of operating display 2, you can difference or same screen display
Show amplitude, phase place, phasor diagram, active power and the reactive power and the amplitude with electric current, phase of three-phase voltage and six phase currents
Position, active power and reactive power, and the data for measuring meter with Surveillance center are contrasted respectively, you can judge exactly
Whether after six phase current magnitudes, phase place, and synthesis and electric current amplitude, phase place are correct, so as to judge tested relay protection
Whether device can put into operation.Due to detecting to two group of six phase current in relay protection secondary circuit 5 simultaneously, and by
The automatic rapid computations of the operating systems of Windows Mobile 5.0 are processed, thus can not only ensure the accuracy of result of determination,
And time of live onload examination can be greatly shortened, improve detection operating efficiency.
Claims (1)
1. a kind of supergrid and current on-load detector, with a SY3001 intelligent three-phase phase voltammetric meter, are somebody's turn to do
Touching type operation display screen is provided with volt ampere meter, volt ampere meter has been embedded in the operating systems of Windows Mobile 5.0, Windows
Three road information of voltage input channels and voltage, current information processing module are provided with the operating systems of Mobile 5.0, its feature exists
In：6 road current signal input channels, one end of current signal input channel are provided with SY3001 intelligent three-phase phase voltammetric meters
Split core type current transformer is respectively connected with, is provided with voltage, current information processing module：
One six phase current signal is received, processed and memory cell, at the computing for monophase current amplitude, phase place and power
Reason；
One and current information process and memory cell, for the calculation process with current amplitude, phase place and power；
One voltage and six phase current information display interfaces, for showing the amplitude of three-phase voltage and six phase currents, phase place, active
Power, reactive power and phasor diagram, while being provided with " voltage change ratio " and " electric current no-load voltage ratio " option, can respectively show three-phase voltage
With a sub-value of six phase currents；
One and current information display interface, for the amplitude of display and electric current, phase place, active power, reactive power and voltage
With the phasor diagram of electric current, realize detection moment it is consistent and current amplitude, the display of phase place, while with current information show boundary
" electric current no-load voltage ratio " option is additionally provided with face, the sub-value with electric current can be shown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060234.XA CN104635015B (en) | 2010-10-12 | 2010-10-12 | Super-grid and current on-load detection device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060234.XA CN104635015B (en) | 2010-10-12 | 2010-10-12 | Super-grid and current on-load detection device |
| CN201010503419.0A CN102043085B (en) | 2010-10-12 | 2010-10-12 | Ultrahigh voltage power grid and current on-load detector |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010503419.0A Division CN102043085B (en) | 2010-10-12 | 2010-10-12 | Ultrahigh voltage power grid and current on-load detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104635015A CN104635015A (en) | 2015-05-20 |
| CN104635015B true CN104635015B (en) | 2017-05-10 |
Family
ID=53213985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510060234.XA Expired - Fee Related CN104635015B (en) | 2010-10-12 | 2010-10-12 | Super-grid and current on-load detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104635015B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101252275A (en) * | 2008-04-08 | 2008-08-27 | 昆明理工大学 | Coupling double line down distance measuring method using six-phase system new phase mode transformation |
| CN101533053A (en) * | 2009-04-24 | 2009-09-16 | 东北大学 | Load simulation and detection device of static reactive power compensation testing platform |
| CN101593970A (en) * | 2009-06-24 | 2009-12-02 | 河南省电力公司新乡供电公司 | A kind of method for compensating time-domain capacitive current for double-circuit line on same pole |
| CN101813736A (en) * | 2009-04-15 | 2010-08-25 | 河南省电力公司 | Distance protection measurement method of double-circuit line on the same pole |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0737998B2 (en) * | 1988-11-16 | 1995-04-26 | 三菱電機株式会社 | Electricity detector |
| JP4743135B2 (en) * | 2007-02-26 | 2011-08-10 | パナソニック電工株式会社 | Detection system |
-
2010
- 2010-10-12 CN CN201510060234.XA patent/CN104635015B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101252275A (en) * | 2008-04-08 | 2008-08-27 | 昆明理工大学 | Coupling double line down distance measuring method using six-phase system new phase mode transformation |
| CN101813736A (en) * | 2009-04-15 | 2010-08-25 | 河南省电力公司 | Distance protection measurement method of double-circuit line on the same pole |
| CN101533053A (en) * | 2009-04-24 | 2009-09-16 | 东北大学 | Load simulation and detection device of static reactive power compensation testing platform |
| CN101593970A (en) * | 2009-06-24 | 2009-12-02 | 河南省电力公司新乡供电公司 | A kind of method for compensating time-domain capacitive current for double-circuit line on same pole |
Non-Patent Citations (2)
| Title |
|---|
| 六相输电线路继电保护系统分析;A.P.阿波斯托洛夫，R.G.那佛斯别格尔;《华中电力》;20011231;第14卷(第6期);第42-44页 * |
| 特高压六相输电线路特性研究;赵庆明等;《中国电力》;20070831;第40卷(第8期);第40-44页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104635015A (en) | 2015-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Huang et al. | A novel approach for fault location of overhead transmission line with noncontact magnetic-field measurement | |
| CN106771450A (en) | User's electric energy meter is opposed electricity-stealing the detection method and situ metrology check device of inspection | |
| CN102053237A (en) | Remote on-line detection system of electric energy metering device | |
| CN106569170A (en) | Metering device secondary circuit detector and detection method thereof | |
| CN110058188A (en) | The active detector of electric energy metering device | |
| CN103439682B (en) | A kind of portable type current transformer combination misalignment proving installation is adopted to carry out the method for methods of composite errors on current transformer test | |
| CN102043085B (en) | Ultrahigh voltage power grid and current on-load detector | |
| CN206178129U (en) | WAMS capability test system based on RTDS | |
| CN102590695A (en) | Device for detecting and locating failure of power line | |
| CN106526305B (en) | It is a kind of for judging the phasor analysis device of three-phase second loop return wiring correctness | |
| CN111999684A (en) | One-key type transformer hexagonal diagram rapid tester | |
| CN103023497B (en) | The digital signal of selsyn module and analog signal conversion accuracy method of testing | |
| CN104635015B (en) | Super-grid and current on-load detection device | |
| CN103885025A (en) | Load contrastive analysis tester | |
| CN208172234U (en) | A kind of no-load voltage ratio of current transformer, Check up polarity experimental rig | |
| CN106526527A (en) | Method for searching minimal inclination angle to determine low-voltage three-phase four-wire wiring | |
| CN206161833U (en) | Online electric leakage detection module of measurement kilowatt -hour meter | |
| CN206557369U (en) | High-voltage electric-energy meter on-line monitoring system based on carrier communication | |
| CN106772192A (en) | Secondary Circuit of Potential Transformer multipoint earthing detection means | |
| CN114034982A (en) | Floating system direct current system ground fault point positioning method and system | |
| CN203881861U (en) | Multifunctional power grounding parameter tester | |
| CN208350908U (en) | A kind of device measuring Zinc-Oxide Arrester electric property | |
| CN203376392U (en) | Relay protection on-load inspection intelligent phasor analysis meter | |
| CN205404655U (en) | Novel multi -functional electric parameter testing appearance | |
| JPH10132890A (en) | Method and device for locating failure point |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 473000 Henan City, Nanyang province people's North Road, No. 268 Applicant after: Nanyang Power Supply Company, State Grid Henan Electric Power Company Address before: 473000 Henan City, Nanyang province people's North Road, No. 268 Applicant before: Henan Electric Power Company Nanyang Power Supply Branch |
|
| GR01 | Patent grant | ||
| 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: 20170510 Termination date: 20171012 |