CN202548231U - Detection device for substation merging unit - Google Patents

Detection device for substation merging unit Download PDF

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Publication number
CN202548231U
CN202548231U CN2012201189159U CN201220118915U CN202548231U CN 202548231 U CN202548231 U CN 202548231U CN 2012201189159 U CN2012201189159 U CN 2012201189159U CN 201220118915 U CN201220118915 U CN 201220118915U CN 202548231 U CN202548231 U CN 202548231U
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CN
China
Prior art keywords
mutual inductor
merge cells
connects
data message
signal output
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 - Lifetime
Application number
CN2012201189159U
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Chinese (zh)
Inventor
庄黎明
沈冰
曾平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Municipal Electric Power Co
East China Power Test and Research Institute Co Ltd
Original Assignee
Shanghai Municipal Electric Power Co
East China Power Test and Research Institute Co Ltd
Priority date (The priority date 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 date listed.)
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Priority to CN2012201189159U priority Critical patent/CN202548231U/en
Application granted granted Critical
Publication of CN202548231U publication Critical patent/CN202548231U/en
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Abstract

The utility model relates to the technical field of power, and in particular relates to the field of merging units. A detection device for a substation merging unit comprises a microprocessor module and also comprises an analog/digital (A/D) conversion module connected with the microprocessor module, wherein the A/D conversion module is connected with a standard mutual inductor; a primary side of the standard mutual inductor is connected in series with an electronic mutual inductor which is matched with a measured merging unit; a secondary side of the standard mutual inductor is provided with a signal output end; and the signal output end is connected with the A/D conversion module. The utility model provides a detection device suitable for dynamically detecting the merging units.

Description

The pick-up unit of a kind of transformer station merge cells
Technical field
The utility model relates to the power technology field, is specifically related to the merge cells field.
Background technology
The intelligent substation merge cells is as the assembly that is used with electronic mutual inductor, for relay protection, supervisory system provide electric current, voltage data.The accuracy of its measurement directly influences the correct judgment property of relay protection, measure and control device, is the basis of whole intelligent substation safe operation.
Merge cells is in order to electric current and voltage data from the secondary converter are carried out time correlation combined physical unit.Merge cells can be a component parts of mutual inductor, also can be a separate unit.Traditional detection method is not suitable for the detection that is combined the unit.And; For the merge cells that is used with electronic mutual inductor, because the communication protocol between electronic mutual inductor and the merge cells still belongs to privately owned at present; Therefore can't measure respectively, must electronic mutual inductor and merge cells be done as a whole the test.
Secondly, traditional detection mode like the detection method to telemechanical ac sampling device, interchange transmitter and telemechanical measuring equipment RTU, is on the basis of transient measuring, to utilize direct comparison method to measure.That is to say that this metering system is to be based upon measured system to be in metastable state, carry out under the very little situation of signal fluctuation.The value that device to be detected and standard detection device are measured within a certain period of time can not take place than cataclysm, and both compare the measuring error of obtaining stable state.Simultaneously, when bigger variation takes place measured signal, be not suitable for the detection of dynamic of merge cells.
The utility model content
The purpose of the utility model is to provide the pick-up unit of a kind of transformer station merge cells, to solve the problems of the technologies described above.
The technical matters that the utility model solved can adopt following technical scheme to realize:
The pick-up unit of a kind of transformer station merge cells; Comprise a microprocessor module; It is characterized in that; Also comprise the A/D modular converter that is connected with said microprocessor module, said A/D modular converter connects a standard mutual inductor, the electronic mutual inductor that the primary side series connection one and the tested merge cells of said standard mutual inductor is used; The secondary side of said standard mutual inductor is provided with signal output part, and said signal output part connects said A/D modular converter.
The signal output part of the said standard mutual inductor measuring resistance of connecting, said standard mutual inductor connects said A/D modular converter through said measuring resistance.Convert the analog current signal of said standard mutual inductor into analog voltage signal through said measuring resistance.
Said microprocessor module also connects a data message record processing module, and said data message record processing module is provided with a data message input port, connects said tested merge cells through said data message input port.Said data message record processing module is converted into sampled value with the digital message of tested merge cells.
Said A/D modular converter, said data message record processing module connect the clock generating module of a clocking, and the signal output part of said clock generating module also connects said tested merge cells.Said clock generating module is used to produce synchronizing signal, carry out clock synchronization to the time.
Said microprocessor module receives the data of said A/D modular converter, said data message record processing module, compares, and draws the test result that needs.
Beneficial effect: owing to adopt technique scheme, the utility model provides a kind of pick-up unit that is applicable to the detection of dynamic of merge cells.
Description of drawings
Fig. 1 is that the circuit of the utility model connects synoptic diagram.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand with effect and understand, below in conjunction with the further elaboration the utility model of concrete diagram.
With reference to Fig. 1, the pick-up unit of a kind of transformer station merge cells comprises a microprocessor module 11, also comprises the A/D modular converter 13, the data message record processing module 14 that are connected with microprocessor module 11.A/D modular converter 13 connects a standard mutual inductor 2, the primary side of standard mutual inductor 2 electronic mutual inductor that a tested merge cells 3 is used of connecting.The secondary side of standard mutual inductor 2 is provided with signal output part, and signal output part connects A/D modular converter 13.The signal output part of standard mutual inductor 2 measuring resistance 21 of connecting connects an A/D modular converter 13 through measuring resistance 21.Convert the analog current signal of standard mutual inductor 2 into analog voltage signal through measuring resistance 21.Data message record processing module 14 is provided with a data message input port, connects tested merge cells 3 through the data message input port.Data message record processing module 14 is converted into sampled value with the digital message of the tested merge cells 3 in outside.
A/D modular converter 13, data message record processing module 14 connect the clock generating module 12 of a clocking, and the signal output part of clock generating module 12 also connects tested merge cells 3.Clock generating module 12 is used to produce synchronizing signal, carry out clock synchronization to the time.
Microprocessor module 11 receives the data of A/D modular converter 13, data message record processing module 14, compares, and draws the test result that needs.
More than show and described ultimate principle of the utility model and the advantage of principal character and the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the instructions that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.

Claims (4)

1. the pick-up unit of transformer station's merge cells; Comprise a microprocessor module; It is characterized in that; Also comprise the A/D modular converter that is connected with said microprocessor module, said A/D modular converter connects a standard mutual inductor, the electronic mutual inductor that the primary side series connection one and the tested merge cells of said standard mutual inductor is used; The secondary side of said standard mutual inductor is provided with signal output part, and said signal output part connects said A/D modular converter.
2. the pick-up unit of a kind of transformer station according to claim 1 merge cells is characterized in that, the signal output part of the said standard mutual inductor measuring resistance of connecting connects said A/D modular converter through said measuring resistance.
3. the pick-up unit of a kind of transformer station according to claim 2 merge cells; It is characterized in that; Said microprocessor module also connects a data message record processing module; Said data message record processing module is provided with a data message input port, connects said tested merge cells through said data message input port.
4. the pick-up unit of a kind of transformer station according to claim 3 merge cells; It is characterized in that; Said A/D modular converter, said data message record processing module connect the clock generating module of a clocking, and the signal output part of said clock generating module also connects said tested merge cells.
CN2012201189159U 2012-03-27 2012-03-27 Detection device for substation merging unit Expired - Lifetime CN202548231U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012201189159U CN202548231U (en) 2012-03-27 2012-03-27 Detection device for substation merging unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012201189159U CN202548231U (en) 2012-03-27 2012-03-27 Detection device for substation merging unit

Publications (1)

Publication Number Publication Date
CN202548231U true CN202548231U (en) 2012-11-21

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CN2012201189159U Expired - Lifetime CN202548231U (en) 2012-03-27 2012-03-27 Detection device for substation merging unit

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CN (1) CN202548231U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103344856A (en) * 2013-06-25 2013-10-09 国家电网公司 Method and device for testing merging unit
CN103487695A (en) * 2013-09-26 2014-01-01 国家电网公司 Detection device for merging unit based on analog input
CN103616580A (en) * 2013-11-08 2014-03-05 北京博电新力电气股份有限公司 Data conversion angular difference test method of merging units

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103344856A (en) * 2013-06-25 2013-10-09 国家电网公司 Method and device for testing merging unit
CN103344856B (en) * 2013-06-25 2016-01-20 国家电网公司 A kind of merge cells method of testing and device
CN103487695A (en) * 2013-09-26 2014-01-01 国家电网公司 Detection device for merging unit based on analog input
CN103487695B (en) * 2013-09-26 2016-05-25 国家电网公司 Based on the checkout gear of analog input merge cells
CN103616580A (en) * 2013-11-08 2014-03-05 北京博电新力电气股份有限公司 Data conversion angular difference test method of merging units
CN103616580B (en) * 2013-11-08 2016-04-13 北京博电新力电气股份有限公司 Merge cells data conversion angular difference method of testing

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Granted publication date: 20121121