CN203365589U - Merging unit synchronous punctuality tester based on analog quantity digitized transmission - Google Patents
Merging unit synchronous punctuality tester based on analog quantity digitized transmission Download PDFInfo
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- CN203365589U CN203365589U CN 201320475828 CN201320475828U CN203365589U CN 203365589 U CN203365589 U CN 203365589U CN 201320475828 CN201320475828 CN 201320475828 CN 201320475828 U CN201320475828 U CN 201320475828U CN 203365589 U CN203365589 U CN 203365589U
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Abstract
The utility model relates to the field of the verification of an intelligent transformer station digitized metering system in an electric power system, and a merging unit synchronous punctuality tester based on analog quantity digitized transmission. The tester includes a message control module, a message transmitting module, a message receiving module, and a time setting module, the message control module is formed by a main CPU and is connected with the message transmitting module, the message receiving module, and the time setting module, the message transmitting module is controlled by FPGA and respectively transmits a FT3 message to a merging unit and the message receiving module, the message receiving module receives a 9-2 message transmitted from the merging unit and the FT3 message transmitted from the message receiving module, and the time setting module receives the GPS signal of a GPS module via a synchronous fiber and is synchronous to the merging unit via the synchronous fiber. The tester provided reflects the punctual capability of the merging unit fundamentally, can reflect the control of the merging unit to the transmitting time of the analog quantity under the condition of synchronous signal loss during the transmission of analog quantity signal, and directly reflect the phase angle relation of the analog quantity.
Description
Technical field
The utility model relates to intelligent substation of electric power system the digitized measurement system verification field, is specifically related to synchronously punctual tester of a kind of merge cells transmitted based on the analog quantity digitizing.
Background technology
At present, the development of intelligent substation and digital transformer substation has entered into the large tracts of land engineering application stage, along with the extensive application of electronic mutual inductor, traditional mutual inductor+merge cells pattern, merge cells will formally become the smart machine of intelligent substation and digital transformer substation.Issue along with the Q/GDW 441-2010 of State Grid Corporation of China " intelligent substation Protection Technology standard "; the merge cells that time-based is controlled is also widely applied in intelligent substation; the time-delay characteristics and the SMV message time jitter characteristic that wherein are combined unit have all been made clearer and more definite standard; although synchronizing signal has nothing to do but affects other secondary devices with protection; merge cells after losing about the synchronizing signal ability of keeping time, also there has been clear and definite technical indicator in State Grid Corporation of China.But home and abroad does not all have clear and definite technical scheme to test the punctual ability of merge cells at present, utilize often the transmission characteristics of some messages to realize, or utilize the pulse signal of merge cells output to test its punctual ability, but these test modes are not the punctual abilities of this qualitative response merge cells, reaction be only the punctual treatment mechanism of merge cells.Its essence should be merge cells for the control for the analog quantity transmitting time that is delivered in the situation that synchronizing signal loses of analog signals, its directly reaction should be the phase angle relationship of analog quantity.Because the digital quantity sampling value message sends according to discrete point, so synchronously punctual ability should be the variation of phase angle relationship on time domain of directly reacting digital quantity.
So, from current present situation, install quantitatively accurate test merge cells in the situation that synchronizing signal loses for the punctual ability of the processing of digital signal in the urgent need to a kind of, and be not only the synchronizing capacity of its pulse per second (PPS) of test.
The utility model content
The purpose of this utility model is to provide synchronously punctual tester of a kind of merge cells transmitted based on the analog quantity digitizing, solve current method of testing or the direct phase angle relationship of reaction simulation amount of device, also can't directly react the problem that the phase angle relationship of digital quantity changes on time domain.
For solving above-mentioned technical matters, the utility model by the following technical solutions: a kind of merge cells transmitted based on the analog quantity digitizing is punctual tester synchronously, comprises
Message control module, consist of host CPU, be connected with message sending module, message receiver module to the time module;
The message sending module, controlled by FPGA, sends the FT3 message to merge cells and message receiver module respectively;
The message receiver module, receive the 9-2 message that merge cells sends, and receives the FT3 message that the message receiver module sends;
To the time module, receive the gps signal of GPS module by synchronous optical fiber, by synchronous optical fiber, with merge cells, synchronize.
Further technical scheme is, described message control module is connected with the host computer link block.
A kind of merge cells transmitted based on the analog quantity digitizing is punctual method of testing synchronously, comprises the following steps:
Step 1, message control module sends the FT3 message by the message sending module to difference merge cells and message receiver module;
Step 2, message control module by the time module receive the synchronizing signal of GPS module, the synchronizing signal that merge cells receives the GPS module also sends the 9-2 message to the message receiver module, the time module by synchronous optical fiber, with merge cells, synchronize;
Step 3; The 9-2 message that the FT3 message that message control module is sent by message receiver module reception message sending module and merge cells send;
Step 4, message control module tests out the two synchronous error according to the synchronism detection method;
Step 5; To disconnect the synchronous optical fiber of merge cells, test merge cells phase angle variations, whether meeting that 4us/10min requires is that angle changes should be in 5 minutes, satisfied meet synchronous requirement.
Compared with prior art, the beneficial effects of the utility model are: can be from reacting in essence the punctual ability of merge cells, can occasionally react merge cells for being delivered in analog signals of the situation that synchronizing signal loses to(for) the control of analog quantity transmitting time, directly reflect the phase angle relationship of analog quantity; And, because the digital quantity sampling value message sends according to discrete point, so directly react the variation of phase angle relationship on time domain of digital quantity.
The accompanying drawing explanation
Fig. 1 is the synchronously connection diagram of a punctual embodiment of tester of a kind of merge cells transmitted based on the analog quantity digitizing of the utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 shows a synchronously embodiment of punctual tester of a kind of merge cells transmitted based on the analog quantity digitizing of the utility model: a kind of merge cells transmitted based on the analog quantity digitizing is punctual tester synchronously, comprises
Message control module, consist of host CPU, be connected with message sending module, message receiver module to the time module;
The message sending module, controlled by FPGA, sends the FT3 message to merge cells and message receiver module respectively;
The message receiver module, receive the 9-2 message that merge cells sends, and receives the FT3 message that the message receiver module sends;
To the time module, receive the gps signal of GPS module by synchronous optical fiber, by synchronous optical fiber, with merge cells, synchronize.
According to synchronous another embodiment of punctual tester of a kind of merge cells transmitted based on the analog quantity digitizing of the utility model, described message control module is connected with the host computer link block.
The utility model also shows a synchronously embodiment of punctual method of testing of a kind of merge cells transmitted based on the analog quantity digitizing: a kind of merge cells transmitted based on the analog quantity digitizing is punctual method of testing synchronously, comprises the following steps:
Step 1, message control module sends the FT3 message by the message sending module to difference merge cells and message receiver module;
Step 2, message control module by the time module receive the synchronizing signal of GPS module, the synchronizing signal that merge cells receives the GPS module also sends the 9-2 message to the message receiver module, the time module by synchronous optical fiber, with merge cells, synchronize;
Step 3; The 9-2 message that the FT3 message that message control module is sent by message receiver module reception message sending module and merge cells send;
Step 4, message control module tests out the two synchronous error according to the synchronism detection method;
Step 5; To disconnect the synchronous optical fiber of merge cells, test merge cells phase angle variations, whether meeting that 4us/10min requires is that angle changes should be in 5 minutes, satisfied meet synchronous requirement.
In addition, the merge cells transmitted based on the analog quantity digitizing synchronously man-machine interface of punctual tester is realized on computers, software employing labview programming, the interface close friend, simple to operate, the checking procedure full-automation, without artificial participation, directly test result is sent on the mode with form.
Adopt ethernet communication between host computer and tester.Between tester and merge cells, by multimode ST-ST optical fiber, be connected, tester inside also connects by identical multimode ST-ST optical fiber.Synchronizing signal adopts optical fiber B code or optical fiber pps pulse per second signal.
The host CPU that described message control module adopts can be the POWER PC MPC8247 of a new generation of Motorola, make stability and the arithmetic speed of device obtain Reliable guarantee, the message receiver module adopts the light receiving element of Agilent (Agilent) company, message controller and digital quantity input watt-hour meter, and and digital quantity input watt-hour meter tester between Ethernet control, fpga chip by XILEX company is realized, with the discreteness precision control of guaranteeing that the IEC61850-9 agreement sends, scope can be as accurate as 100ns.To the time module be used for obtaining the precise time parameter, interface adopts ST, fiber optic wavelength adopts 1310nm.Synchronizing signal adopts the High Accuracy Constant Temperature crystal oscillator, to guarantee in the situation that do not have external source of synchronising signal can complete test yet.Message sending module and message receiver module adopt double FPGA to realize, to guarantee the confidence level of digital source.The demonstration of man-machine interface realizes by computer, interface software employing labview programming realization.Pass through ethernet communication between computer and message control module.
Claims (2)
1. the synchronous punctual tester of the merge cells transmitted based on the analog quantity digitizing, is characterized in that: comprise
Message control module, consist of host CPU, be connected with message sending module, message receiver module to the time module;
The message sending module, controlled by FPGA, sends the FT3 message to merge cells and message receiver module respectively;
The message receiver module, receive the 9-2 message that merge cells sends, and receives the FT3 message that the message receiver module sends;
To the time module, receive the gps signal of GPS module by synchronous optical fiber, by synchronous optical fiber, with merge cells, synchronize.
2. the synchronous punctual tester of a kind of merge cells transmitted based on the analog quantity digitizing according to claim 1, it is characterized in that: described message control module is connected with the host computer link block.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320475828 CN203365589U (en) | 2013-08-06 | 2013-08-06 | Merging unit synchronous punctuality tester based on analog quantity digitized transmission |
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| CN 201320475828 CN203365589U (en) | 2013-08-06 | 2013-08-06 | Merging unit synchronous punctuality tester based on analog quantity digitized transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439597A (en) * | 2013-08-06 | 2013-12-11 | 国家电网公司 | Merging unit synchronous punctual tester based on analog quantity digitized transmission and method therefore |
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2013
- 2013-08-06 CN CN 201320475828 patent/CN203365589U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439597A (en) * | 2013-08-06 | 2013-12-11 | 国家电网公司 | Merging unit synchronous punctual tester based on analog quantity digitized transmission and method therefore |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |