CN202351420U - Metering, comparing and analyzing system of intelligent transformer substation - Google Patents
Metering, comparing and analyzing system of intelligent transformer substation Download PDFInfo
- Publication number
- CN202351420U CN202351420U CN2011204657480U CN201120465748U CN202351420U CN 202351420 U CN202351420 U CN 202351420U CN 2011204657480 U CN2011204657480 U CN 2011204657480U CN 201120465748 U CN201120465748 U CN 201120465748U CN 202351420 U CN202351420 U CN 202351420U
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- mutual inductor
- metering
- comparing
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- contrast
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Abstract
The utility model discloses a metering, comparing and analyzing system of an intelligent transformer substation, which belongs to the technical field of the automatization of an intelligent transformer substation and comprises a metering and comparing screen cabinet. The metering, comparing and analyzing system of the intelligent transformer substation is characterized by also comprising a metering and comparing system, a comparing unit, a non-conventional mutual inductor and a conventional mutual inductor, wherein the metering and comparing system is arranged in the metering and comparing screen cabinet, the non-conventional mutual inductor is communicated with the comparing unit by an optical fiber, the conventional mutual inductor is connected with the comparing unit by a cable, and the comparing unit is communicated with the metering and comparing system. According to the metering, comparing and analyzing system of the intelligent transformer substation, which is disclosed by the utility model, the comparison and the analysis of traditional data collection and digitized collection are independently carried out under the condition that the conventional function of the automatization of a transformer substation is not influenced, and an experimental line is selected in a digitized transformer substation. Except that the non-conventional mutual inductor is installed according to a digitizing mode, the conventional mutual inductor is additionally installed as a reference, stored data can be collected, and the data are also analyzed effectively.
Description
Technical field
The utility model belongs to the intelligent substation technical field of automation, relates to a kind of intelligent substation and measures the comparative analysis system, particularly relates to the analytic system of the unconventional mutual inductor sample data long-term stability of a kind of intelligent substation of analyzing and researching.
Background technology
The research of electric substation automation system and construction develop towards digitizing, intelligentized direction, and essential characteristic is that primary equipment is intelligent, secondary device is networked, and unconventional mutual inductor is adopted in technical requirement, and according to IEC 61850 standard construction.There is following shortcoming in present traditional mutual inductor: (1) insulation system is complicated, volume is big, cost is high.(2) dynamic range is little, and the harmonic wave transient signal of appearance makes protection produce misoperation easily, and the linearity is bad, and electromagnetic current transducer also saturated phenomenon can occur, influences second protection equipment and correctly discerns fault.(3) output can not be directly and microcomputer metering and protect equipment interface.(4) be prone to produce ferroresonance, inflammable, explosive etc.
Appearance along with unconventional mutual inductor; It has brought huge variation to the electrical secondary system design of transformer station; After adopting unconventional mutual inductor, secondary device has omitted independently conversion, A/D sampling, isolated part, target digital signal when the substitute is the band of the unified output of combiner; And unconventional mutual inductor since its dynamic range big be difficult for saturated characteristic, save protection and measured the way of dividing the mutual inductor that is arranged.Analyze theoretically, owing to adopt the Optical Fiber Transmission digital signal, avoided influence or the like the disturbing factor of the electromagnetic interference (EMI) in the secondary cable, distributed capacitance, the data of intelligent transformer station should have higher precision and reliability.The long-time stability at present whole intelligent station are also in progressively verifying.Intelligent transformer station does not also have the accumulation data of long-term engineering operation so far, so is necessary the data of intelligent transformer station are analyzed, and the result of generation can also further instruct lectotype selection.
The utility model content
The purpose of the utility model is to provide a kind of intelligent substation to measure the comparative analysis system; Do not influencing under the automation of transformation substations conventional func situation; Independently carry out the comparative analysis of traditional data collection and digital collection, in digital transformer substation, choose experimental line, except that installing according to digital form the unconventional mutual inductor; Conventional mutual inductor has been installed in addition as benchmark, can have been gathered the storage data and effectively analyze data.
In order to address the above problem, the technical scheme that the utility model is taked is:
A kind of intelligent substation measures the comparative analysis system; Comprise metering contrast screen cabinet; It is characterized in that: also comprise metering comparison system, contrast unit, unconventional mutual inductor and conventional mutual inductor, in metering contrast screen cabinet, be provided with the metering comparison system, said unconventional mutual inductor is through optical fiber and contrast unit communications; Said conventional mutual inductor is connected with the contrast unit through cable, communicates by letter with the metering comparison system in said contrast unit.
Aforesaid a kind of intelligent substation measures the comparative analysis system, it is characterized in that: said contrast unit is electricity contrast unit, and said electricity contrast unit comprises digital electricity meter and traditional electric energy meter.
Aforesaid a kind of intelligent substation measures the comparative analysis system; It is characterized in that: said contrast unit is that remote measurement inserts measurement and control unit; Said remote measurement inserts measurement and control unit and receives the measuring amount of unconventional mutual inductor through the optical-fibre communications mode, and said remote measurement inserts measurement and control unit inserts conventional mutual inductor through the hardwire mode measuring amount.
Aforesaid a kind of intelligent substation measures the comparative analysis system; It is characterized in that: said digital electricity meter inserts unconventional mutual inductor through optical-fibre communications and inputs to the digital signal that SV nets through merge cells, and said traditional electric energy meter inserts the cable simulating signal of traditional conventional mutual inductor through secondary cable.
Aforesaid a kind of intelligent substation measures the comparative analysis system, and it is characterized in that: said conventional mutual inductor adopts traditional electromagnetic transformer.
Aforesaid a kind of intelligent substation measures the comparative analysis system, it is characterized in that: said remote measurement inserts measurement and control unit and is provided with pluggable integrated circuit board incoming digital signal and traditional sampling signal respectively.
The beneficial effect of the utility model: the utility model is at the inner selected part test circuit of intelligent transformer station; Conventional mutual inductor is installed; Designed digital collection and conventional comparative analysis scheme of gathering, can compare analysis according to various conditions, accumulation long-time running data remote measurement and electricity; For the accuracy of unconventional mutual inductor is witnessed, for lectotype selection provides foundation.
Description of drawings
Fig. 1 is the system architecture synoptic diagram of the utility model intelligent substation metering comparative analysis system.
Fig. 2 inserts the measurement and control unit synoptic diagram for remote measurement.
Embodiment
Shown in Fig. 1-2; A kind of intelligent substation measures the comparative analysis system, comprises metering contrast screen cabinet, it is characterized in that: also comprise the metering comparison system, contrast unit, unconventional mutual inductor and conventional mutual inductor; In metering contrast screen cabinet, be provided with the metering comparison system; Said unconventional mutual inductor is through optical fiber and contrast unit communications, and said conventional mutual inductor is connected with the contrast unit through cable, communicates by letter with the metering comparison system in said contrast unit.
Intelligent substation metering comparative analysis system has adopted the framework of three layer of two net, the independent group screen of metering comparison system, and screen cabinet interior networking and independent operating separately, metering contrast screen cabinet is positioned at the pulpit.Total system has contained electricity contrast unit, and remote measurement inserts measurement and control unit, below explains respectively.
The independent group screen of 1 metering comparison system
Selected representational circuit as experimental subjects, with digital form and traditional approach acquired signal, digitized signal inserts from combiner respectively, introduces digitizing measurement and control unit or digitizing ammeter through optical fiber, and then is transferred to the backstage analyzing and processing; Traditional approach is installed electromagnetic transformer and is therefrom obtained electric signal, inserts traditional measurement and control unit or traditional ammeter with the hardwire mode, uploads thereafter.Wherein ammeter is concentrated group screen, is in wall together with the measure and control device of testing usefulness.Aforementioned observing and controlling is analyzed the backstage group screen with the data storage that is in station level, and the network in screen is independent of automation of transformation substations station level network.
2 electricities contrast unit inserts
On two test circuits, digital electricity meter and traditional electric energy meter all have been installed separately, insert the digital signal of SV net respectively, and from the cable simulating signal of traditional electromagnetic transformer.All ammeters are concentrated group screen, are positioned over the pulpit, and the ammeter of test circuit is exported signal with serial ports 485 modes, communicate by letter with the analytical work station according to DL/T 645 stipulations.
3 remote measurements insert measurement and control unit
Digitized measuring amount outputs to merge cells from unconventional mutual inductor, is the SV net then, is linked into remote measurement with the optical fiber communication mode and inserts measurement and control unit, and traditional measuring amount is connected to remote measurement with hard contact and inserts measurement and control unit from electromagnetic transformer.Remote measurement inserts measurement and control unit and is provided with pluggable integrated circuit board incoming digital signal and traditional sampling signal respectively, supports the access of multiple mode, is sent to the analytical work station according to IEC 61850 stipulations then.
4 metering comparison systems insert
This test does not intersect with the automation function of transformer station's station level operation maintenance, analyzes the contrast workstation and is installed in independent screen cabinet, communicates by letter with measurement and control unit with ammeter respectively with the Ethernet mode through serial ports expansion.The screen cabinet is placed with other secondary device screen cabinets.Ups power is used at the analytical work station.
5 analyze the contrast backstage
Adopt unified technology platform; General commercial data base can be handled the real time data and the history data store inquiry of Large Volume Data, the inquiry under the various conditions that the support customization requires; And with close friend's interface output result of calculation, assay surface adopts the Qt technological development.According to the packing density of level storage in present second, supported Real-time Error at present, average error and root mean square mode can show compare error through the mode of numeral, form or curve.
More than show and described ultimate principle, principal character and the advantage of 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 (6)
1. an intelligent substation measures the comparative analysis system; Comprise metering contrast screen cabinet; It is characterized in that: also comprise metering comparison system, contrast unit, unconventional mutual inductor and conventional mutual inductor, in metering contrast screen cabinet, be provided with the metering comparison system, said unconventional mutual inductor is through optical fiber and contrast unit communications; Said conventional mutual inductor is connected with the contrast unit through cable, communicates by letter with the metering comparison system in said contrast unit.
2. a kind of intelligent substation according to claim 1 measures the comparative analysis system, it is characterized in that: said contrast unit is electricity contrast unit, and said electricity contrast unit comprises digital electricity meter and traditional electric energy meter.
3. a kind of intelligent substation according to claim 1 measures the comparative analysis system; It is characterized in that: said contrast unit is that remote measurement inserts measurement and control unit; Said remote measurement inserts measurement and control unit and receives the measuring amount of unconventional mutual inductor through the optical-fibre communications mode, and said remote measurement inserts measurement and control unit inserts conventional mutual inductor through the hardwire mode measuring amount.
4. a kind of intelligent substation according to claim 2 measures the comparative analysis system; It is characterized in that: said digital electricity meter inserts unconventional mutual inductor through optical-fibre communications and inputs to the digital signal that SV nets through merge cells, and said traditional electric energy meter inserts the cable simulating signal of traditional conventional mutual inductor through secondary cable.
5. measure the comparative analysis system according to claim 3 or 4 described a kind of intelligent substations, it is characterized in that: said conventional mutual inductor adopts traditional electromagnetic transformer.
6. a kind of intelligent substation according to claim 3 measures the comparative analysis system, it is characterized in that: said remote measurement inserts measurement and control unit and is provided with pluggable integrated circuit board incoming digital signal and traditional sampling signal respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204657480U CN202351420U (en) | 2011-11-22 | 2011-11-22 | Metering, comparing and analyzing system of intelligent transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204657480U CN202351420U (en) | 2011-11-22 | 2011-11-22 | Metering, comparing and analyzing system of intelligent transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202351420U true CN202351420U (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204657480U Expired - Lifetime CN202351420U (en) | 2011-11-22 | 2011-11-22 | Metering, comparing and analyzing system of intelligent transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202351420U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149547A (en) * | 2012-12-23 | 2013-06-12 | 北京智网创能科技有限公司 | Transformer substation measurement return circuit online monitoring system and state maintenance method |
| CN103439679A (en) * | 2013-08-28 | 2013-12-11 | 国家电网公司 | Absolute time delay detection device and method of intelligent substation mutual inductor data collection system |
-
2011
- 2011-11-22 CN CN2011204657480U patent/CN202351420U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149547A (en) * | 2012-12-23 | 2013-06-12 | 北京智网创能科技有限公司 | Transformer substation measurement return circuit online monitoring system and state maintenance method |
| CN103149547B (en) * | 2012-12-23 | 2016-04-27 | 北京智网创能科技有限公司 | Transformer substation measurement return circuit on-line monitoring system and state maintenance method |
| CN103439679A (en) * | 2013-08-28 | 2013-12-11 | 国家电网公司 | Absolute time delay detection device and method of intelligent substation mutual inductor data collection system |
| CN103439679B (en) * | 2013-08-28 | 2015-08-19 | 国家电网公司 | Intelligent substation mutual inductor data collection system absolute time delay detection device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |
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| CX01 | Expiry of patent term |