CN101330202A - Current-differential relay device - Google Patents
Current-differential relay device Download PDFInfo
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- CN101330202A CN101330202A CNA2008101249406A CN200810124940A CN101330202A CN 101330202 A CN101330202 A CN 101330202A CN A2008101249406 A CNA2008101249406 A CN A2008101249406A CN 200810124940 A CN200810124940 A CN 200810124940A CN 101330202 A CN101330202 A CN 101330202A
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Abstract
The present invention provides a current-differential relay capable of obtaining various data of other party current-differential relay. The relay device, installed at one end of a power line (L) within a protected zone, includes a processor performing a transmitting process that transmits first sampling current data of the power line (L) at the one end to another relay device installed at the other end, through a 2048-kbps transmission line, and a receiving process that receives second sampling current data of the power line (L) at the other end from the another relay device through the transmission line. The processor transmits the sampling current data in a transmission frame, and transmits, using an unused field not for the sampling current data in the transmission frame, display-related data output from the human-machine interface.
Description
Technical field
The present invention relates to current differential relay; this current differential relay is arranged on each end of the guard interval of power transmission line; and self the end sampling current data that sampling is obtained flowing through the electric current of power transmission line transmit route through regulation and send to square end; receive the sampling current data that flow through power transmission line through this transmission route simultaneously to square end; spill current between the sampling current data of obtaining the detected sampling current data of self end and square end being sent, thus accident in the guard interval detected.
Technical background
In the current differential relay that constitutes like this, data between current differential relay transmit with 30 degree periodic samplings self devices and the other side's device each phase current data separately, send these sampling current data of reception mutually with the transmission route of transfer rate 54kbps (or 64kbps).Then, according to the sampling current data of self installing and the sampling current data computation spill current value of the other side's device, when this spill current value surpasses setting, just be judged to be accident.And, with ON/OFF information (information of the plus or minus) mounting of current differential relay room in the information of transmission, receiver side judge have or not transmit unusual, or as the judgement (for example with reference to Patent Document 1) of the device action information of protective device etc.This method also as described in the Patent Document 1, is applicable to that judgement has or not the state that transmits unusual or device action.
[Patent Document 1] spy opens 2005-176440 communique (Fig. 3 A)
But; the transfer approach in the past that above-mentioned Patent Document 1 is also mentioned; though have or not the state that transmits unusual or device action applicable to judgement, the information that obtains the other side's device inside when being unwell to the actuating of relay is carried out the occasion of accident analysis or is obtained in the data of the occasion of safeguarding relay.And, analyzed for the data that when current differential relay moves, obtain the other side's device in the past, and must go to the place that is provided with of the other side's device, directly obtained data from installing, or but the supervisor control etc. of telecommunication is set in each electric substation, the connecting interface with relay is set.
Like this, the purpose that current differential relay is in the past analyzed when carrying out the actuating of relay, for the adjusted value of obtaining the other side's device, the state of relay key element and the input/output signal of device, the problem that exists is when accident takes place, must go to and the place of self device at a distance of the other side's device of tens kilometers, perhaps set in advance special surveillance control system etc., before carrying out data analysis, taking suitably to handle, spend many times, need equipment investment.
Summary of the invention
The present invention does for addressing the above problem, its purpose is, by will being that low speed that purpose was used transmits route and changes the outfit and be more at a high speed transmission route in the past to transmit the sampling current data, dead zone on the transmission route after utilizing this to change the outfit is simultaneously transmitted various data effectively, thereby provide the place that is provided with that does not move to the other side's device, and special supervisor control etc. needn't be set, can obtain the current differential relay of the various data of the other side's current differential relay rapidly.
For addressing the above problem, achieve the goal, current differential relay of the present invention, be arranged on an end of the guard interval of power transmission line, comprise: transmit data processing division, this transmission data processing division carries out and will obtain flowing through the 1st sampling current data of electric current of a described end of described power transmission line according to sampling, the transmission of another current differential relay that sends to the other end of the guard interval that is arranged on described power transmission line through the transmission route of regulation is handled, and carries out receiving the reception processing of the 2nd sampling current data of electric current that obtains flowing through the described other end of described power transmission line according to sampling from described another current differential relay through this transmissions route; Differential operational portion, this differential operational portion computing as the spill current between described the 1st sampling current data and described the 2nd sampling current data, be used to detect accident-free described spill current arranged in the described guard interval; And by display part information is given and accepted to become possible human-machine interface oral area, described transmission route has the above transfer rate of 2048kbps, described transmission data processing division on the transmission frame that described transmission route is used and transmit, utilizes the remaining area of the described transmission frame of mounting the 1st sampling current data to transmit the demonstration associated data that sends from described human-machine interface oral area described the 1st sampling current data mounting simultaneously.
According to the present invention, because mounting respectively transmits data (demonstration associated data) in transmitting to transmit on the transmission frame that the sampling current data use beyond the sampling current data, therefore new equipment such as special surveillance control system need be set, and need not move to the place that is provided with of the other side's device, just the relay that can be provided with from a side electric substation obtains being arranged on the various data to the relay of square end rapidly, reaches the effect that analytic function improves when making the actuating of relay.
Description of drawings
Fig. 1 is system's pie graph of the example 1 of current differential relay of the present invention.
Fig. 2 illustrates from the figure of first current differential relay to the transmission frame of the sampling current data of second current differential relay transmission.
Fig. 3 illustrates from the figure of second current differential relay to the transmission frame of the sampling current data of first current differential relay transmission.
Fig. 4 illustrates the figure of the transmission frame of the HMI order data (adjusted value sends request) that transmits to second current differential relay from first current differential relay of example 1.
Fig. 5 illustrates the figure of the transmission frame of the HMI reply data (adjusted value) that transmits to first current differential relay from second current differential relay of example 1.
Fig. 6 illustrates the figure of the transmission frame of the HMI order data (logout sends request) that transmits to second current differential relay from first current differential relay of example 2.
Fig. 7 illustrates the figure of the transmission frame of the HMI reply data (logout) that transmits to first current differential relay from second current differential relay of example 2.
Fig. 8 illustrates the figure of the transmission frame of the HMI order data (adjusted value is set request) that transmits to second current differential relay from first current differential relay of example 6.
Fig. 9 illustrates the figure of the transmission frame of the HMI reply data (adjusted value setting result) that transmits to first current differential relay from second current differential relay of example 6.
Figure 10 is system's pie graph of the example 7 of current differential relay of the present invention.
Figure 11 illustrates the figure of the transmission frame of the HMI order data (time information) that transmits to second current differential relay from first current differential relay of example 7.
Figure 12 illustrates the transmission frame format figure according to the ITU-TG.704 standard.
Label declaration
2 current transformers (CT)
3 filters
4 sample-and-hold circuits
5 A/D converters
7 circuit breakers
8 differential operational portions (operational part)
9 man-machine interfaces (HMI) portion
10 common portions (the first constantly synchronous portion)
11 contacts
12 transmit data processing division
13 sampling Synchronization Control handling parts
14 optical interfaces (I/F) portion
15 optical fiber
16 multichannel converting means
17 O/E (light, electric signal converter)
18 E/O (electricity, optical signal transducer)
19 cables
20 optical fiber
21 personal computers (PC)
22 buttons
23 front panels
24 LCD portions
101 first current differential relays
102 second current differential relays
103 display parts
Embodiment
Below, describe the example of current differential relay of the present invention with reference to the accompanying drawings in detail.Again, the present invention is not limited by this example.
Example 1
Fig. 1 is system's pie graph of the example 1 of current differential relay of the present invention.Among Fig. 1, the two ends at the guard interval of power transmission line L are provided with 2 current differential relays respectively, and are connected on the power transmission line L.Among these current differential relays, first current differential relay 101 is connected to guard interval one distolateral of power transmission line L, and the output of first current differential relay 101 is connected on the circuit breaker 7 that is arranged on power transmission line by contact 1.Another the second distolateral current differential relay 102 that is connected to the guard interval of power transmission line L also has identical structure with first current differential relay 101.First current differential relay 101 is connected on the power transmission line L by the current transformer of being located on the power transmission line L (CT) 2.Second current differential relay 102 is also identical with first current differential relay 101, be connected on the power transmission line L by CT2 and circuit breaker 7, the output of second current differential relay 102 is connected on the circuit breaker 7 that is arranged on power transmission line L by contact (not shown).
First current differential relay 101 is made of filter 3, sample-and-hold circuit 4, A/D converter 5, differential operational portion (operational part) 8, man-machine interface (HMI) portion 9, common portion 10, contact 11, transmission data processing division 12, sampling Synchronization Control handling part 13 and optical interface (I/F) portion 14.
Below, the action of current differential relay is described.Be input to the sampling current data of first current differential relay 101 through CT2 from power transmission line L, through filter 3, sample-and-hold circuit 4, A/D converter 5 and transmission data processing division 12, become the data of mounting on the transmission frame of regulation, then, through light I/F portion 14, optical fiber 15, O/E (light, electric signal converter) 17, cable 19, multichannel converting means 16 and transmission route (optical fiber) 20, send to second current differential relay 102.
On the other hand, sampling current data 102 detected by second current differential relay, that utilize multichannel converting means 16 to receive by optical fiber 20, through cable 19, E/O (electricity, optical signal transducer) 18, optical fiber 15 and light I/F portion 14, be input to and transmit data processing division 12.The spill current of the sampling current that the sampling current data of differential operational portion 8 computings input are promptly detected by first current differential relay 101 and second current differential relay 102 respectively, when this spill current value surpasses setting, just be judged to be accident, and this signal is sent to circuit breaker 7 by contact 11.Circuit breaker 7 receives this signal and just cuts off the electric current that flows to power transmission line L.
In addition, HMI portion 9 input hang oneself the transmission data that transmit second current differential relay 102 that data processing division 12 is taken into (as among Fig. 1 with shown in the arrow A), extract wherein and show relevant data, be shown on the picture of the LCD portion 24 of front panel 23 of display part 103 or personal computer (PC) 21.That is to say that HMI portion 9 is formed in the man-machine interface unit that shows on the display unit of front panel 23 or PC21 etc.And, HMI portion 9 will send to second current differential relay 102 according to command information (shown in arrow B among Fig. 1) mounting of the operation input of the operation input of the button 22 of front panel 23 or PC21 on transmission information (being transformed to the transmission frame format of regulation).Second current differential relay 102 also has the display part 103 identical with first current differential relay 101.
Fig. 2 to Fig. 5 illustrates the example of the transmission data of this example, Fig. 2 and Fig. 4 illustrate an example that for example is sent to the transmission data of second current differential relay 102 from first current differential relay 101, and Fig. 3 and Fig. 5 illustrate an example that for example is sent to the transmission data of first current differential relay 101 from second current differential relay 102.
Among Fig. 2, being sent to the transmission data S-1 of second current differential relay 102 from first current differential relay 101, is by frame synchronization, as A phase current data, B phase current data, C phase current data, the control data of regulation and the data rows that CRC constitutes of the part of sampling current data.This data rows is assigned to the channel (CH) of regulation, makes the frame format with ITU-TG.704 consistently send to second current differential relay 102.
Among Fig. 3, being sent to the transmission data R-1 of first current differential relay 101 from second current differential relay 102, is by frame synchronization, as A phase current data, B phase current data, C phase current data, the control data of regulation and the data rows that CRC constitutes of the part of sampling current data.This data rows is assigned to the CH of regulation, makes the frame format with ITU-TG.704 consistently send to first current differential relay 101.Promptly be and the identical structure of above-mentioned transmission data S-1.
Above-mentioned transmission data S-1 is to spend the sampling current data of carrying out with identical in the past electric angle 30, to send mutually between first current differential relay 101 and second current differential relay 102 at ordinary times with transmitting data R-1.Use in this example the transmission route of 2048kbps replace in the past 54kbps or the transmission route of 64kbps, transmit this sampling current data.
Here, transmission frame format according to ITU-TG.704 is described simply.Figure 12 illustrates the transmission frame format according to ITU-TG.704.As shown in the drawing, the time with 125 μ s in this transmission frame format sends 256 of 1 frame lengths.So the transfer rate of this transmission frame is 256/ (125 * 10
-6)=2048kbps.Have in this transmission frame format again 1 frame is done 32 zones of cutting apart (channel), the channel after these are cut apart by 32 just is loaded with the data of 256/32=8 position.Again in these 32 channels, but the channel that is made of CH1～CH30 is the zone of loading data.But above-mentioned sampling current data (in the predetermined channel of CH1～CH30), are sent in these loading data zones by mounting.
Among Fig. 4, be sent to the transmission data S-3 of second current differential relay 102 from first current differential relay 101, be show associated data (respectively transmitting data) a kind of, and be the HMI order data (adjusted value sends request) of the adjusted value transmission of request the other side current differential relay.This HMI order data (adjusted value send request) with according to the predetermined operation input of the button 22 of front panel 23 as triggering, HMI portion 9 mountings send on the transmission information of self installing.
Among Fig. 5, be sent to the transmission data R-3 of first current differential relay 101 and transmit data R-4 from second current differential relay 102, be to receive the adjusted value that the HMI portion 9 of second current differential relay 102 of above-mentioned HMI order data (adjusted value send request) sends as its answer, and be for example as the HMI reply data (adjusted value) that shows one of associated data.
Transmission data S-3 and transmission data R-3, R-4 as above-mentioned demonstration associated data send with the zone of not loading the sampling current data (transmitting the remainder of frame format).In addition, this adjusted value as an example, illustrates the situation of using a plurality of data blocks to send because of containing much information in this example.
As mentioned above, the current differential relay of this example uses 2048kbps to replace the transmission data processing division of 64kbps in the past, make mounting in the transmission frame format of the standard of the ITU-TG.704 as shown in Figure 12 that sends according to transmission route with 2048kbps, often send the sampling current data mutually, utilize the remaining area of this transmission frame format simultaneously, transmission receives for example demonstration associated data of HMI order data (adjusted value sends request) and HMI reply data (adjusted value) etc., therefore, can send reception sampling current data simultaneously and show associated data.
Like this, current differential relay according to this example, because demonstration associated data (respectively the transmitting data) mounting beyond the sampling current data is transmitted on the transmission frame that is used for transmitting the sampling current data, so new equipment such as special supervisor control needn't be set, also needn't move to the place that is provided with of the other side's device, just can obtain demonstration associated data rapidly, can improve analytic function the square end relay.
In addition, first current differential relay 101 of this example and second current differential relay 102, with optical fiber 15, O/E (light, electric signal converter) 17, E/O (, optical signal transducer) 18, cable 19, multichannel converting means 16, and optical fiber 20 is as transmitting route, connect, but the transmission route that connects first current differential relay 101 and second current differential relay 102, be not limited to optical fiber 15, O/E (light, electric signal converter) 17, E/O (, optical signal transducer) 18, cable 19, multichannel converting means 16, and optical fiber 20, for example also can light I/F portion 14 be connected with the direct of optical fiber 20.
In addition, the transmission data S-3 of this example and transmit data R-3, R-4, the remainder of mounting beyond the sampling current data of loading transmission frame format shown in Figure 12 synchronously sends with the transmission of sampling current data.But, show the transmission data S-3 of associated data and transmit data R-3, R-4 as these, also can be asynchronous in the transmission of sampling current data, mounting sends in the transmission frame format of Figure 12 individually.
In addition, illustrated in this example that the transmission route with transfer rate 2048kbps transmits the sampling current data and shows associated data, but certain also available transfer rate surpasses the transmission route of 2048kbps.
Example 2
Fig. 6 and Fig. 7 illustrate the example of the transmission data of example 2, Fig. 6 illustrates an example that for example is sent to the transmission data of second current differential relay from first current differential relay, and Fig. 7 illustrates an example that is sent to the transmission data of first current differential relay from second current differential relay.
Among Fig. 6, being sent to the transmission data S-4 of second current differential relay from first current differential relay, is show associated data a kind of, and is the HMI order data (logout sends request) that the logout of request the other side current differential relay sends.Specifically, transmission data S-4 is made of the classification (Kind) of HMI order data.This HMI order data (logout sends request) is imported as triggering with the operation of the button 22 of front panel 23 or the operation of PC21, and HMI portion 9 sends mounting on the transmission information of self installing.
Among Fig. 7, from second current differential relay be sent to first current differential relay transmission data R-5, transmit data R-6 and transmit data R-7, be the HMI portion 9 that receives second current differential relay behind the above-mentioned HMI order data (logout sends request) as its answer send logout, as the HMI reply data (logout) that shows one of associated data.Its amount of information of logout is taked the time with record and different, and use sends by the data block (channel) of the number (in this example being 3) of its amount of information.Transmit data R-5, transmit data R-6 and transmit data R-7, specifically the classification (Kind) by the HMI order data takes place to constitute constantly with incident No. (EvtNo.) that connects thereafter and incident.
Among above-mentioned transmission data S-4, transmission data R-5, transmission data R-6 and the transmission data R-7, also the demonstration associated data with example 1 is identical, the remaining area of the transmission frame format that the sampling current data of using transmission first current differential relay often to send are each other used sends.Perhaps, mounting sends in transmitting on the frame format individually.
Like this, current differential relay according to this example, because mounting is on the transmission frame that transmission sampling current data are used, transmitting sampling current data demonstration associated data (respectively transmitting data) in addition is that incident sends request and logout, therefore the equipment of new special supervisor control etc. needn't be set, needn't move to the place that is provided with of the other side's device, just can obtain the logout of the other side's device rapidly, can improve analytic function.
Example 3
As mentioned above, in the example 1 and 2, send reception mutually according to the command information of the operation of the operation of the button 22 of front panel 23 or PC21 and as the information of the adjusted value or the logout of its response message with the transmission frame format of 2048kbps shown in Figure 12, and be shown on the display part.
In this example,, send the information of the state and the device input/output signal of receiving relay key element mutually with the transmission frame format of 2048kbps shown in Figure 12.After the information of the state of this relay key element and device input/output signal is sent out, be stored in self current differential relay of the other side.Then, the information of the state of this relay key element and device input/output signal enables to be confirmed by front panel 23 or PC21 as required.
Like this, the state of the relay key element by preserving the other side's device and the information of input/output signal, and can show as required, the analytic function of the actuating of relay when just can the raising accident detecting etc.
Example 4
In the example 4, as command information and its response message of HMI portion 9, send the information of reception and demonstration instrumentation value information (outside voltage, electric current, phase place, effective power, reactance capacity, power factor, differential current, the inhibition electric current) mutually with the transmission frame format of 2048kbps shown in Figure 12.
By such formation, just can show the instrumentation value information of the other side's current differential relay as required, when the state of the system of assurance, be easy therefore.
Example 5
In the example 5,,, send mutually and receive the also version information of software for display with the transmission frame format of 2048kbps shown in Figure 12 as command information and its response message of HMI portion 9.
By such formation, just can show the software version information of the other side's current differential relay as required, aspect management system, be easily therefore.
Example 6
Utilize the operation of button 22 of front panel 23 or the operation of PC21 in the example 6, carry out the adjusted value of the other side's current differential relay and set.Among Fig. 8, be sent to the transmission data S-5 and the S-6 of second current differential relay from first current differential relay, be show associated data a kind of, and be the HMI order data (adjusted value is set request) that request the other side current differential relay is set the adjusted value of regulation.Specifically, transmit data S-5 and S-6 by the classification (Kind) of HMI order data with after every adjusted value of connecing formed.This HMI order data (adjusted value is set request), HMI portion 9 is taken into from the data of PC21 input and sends.
In addition in Fig. 9, be sent to the transmission data R-8 of first current differential relay from second current differential relay, be receive second current differential relay behind the above-mentioned HMI order data (adjusted value set request) HMI portion 9 after setting adjusted value by this, as answer send this set the result, as the HMI reply data (adjusted value setting result) that shows one of associated data.Specifically, transmitting data R-8 is made up of with the setting result who is connected in adjusted value thereafter the classification (Kind) of HMI reply data.HMI portion 9 accepts HMI reply data (adjusted value setting result), adjusted value is set the result be presented on the PC21.
Current differential relay according to this example, because mounting is on the transmission frame that transmission sampling current data are used, transmit adjusted value and set request, set the adjusted value of the other side's device, therefore the equipment of new special communication medium needn't be set, needn't move to the place that is provided with of the other side's device, just can set the adjusted value of the other side's device rapidly, can make the utilization of system become easy.
Example 7
Figure 10 is system's pie graph of the example 7 of current differential relay of the present invention.Common portion (first moment lock unit) 10 with first current differential relay 101 is connected to from the GPS receiver 51 of gps satellite information 50 time of reception.These common portion 10 inputs make the system time that self installs be synchronized to GPS processing constantly from the time information of gps satellite 50.And common portion 10 sends to second current differential relay 102 as the other side's device with time information (as using shown in the arrow C among Figure 10) mounting that receives on transmission information.So, the common portion of second current differential relay 102 (second moment lock unit: omit among the figure) utilizes this time information to carry out moment Synchronous Processing.
In addition.Among Figure 11, being sent to the transmission data S-7 and the S-8 of second current differential relay 102 from first current differential relay 101, is the HMI order data (time information) of the moment Synchronous Processing of request the other side current differential relay.Specifically, transmit data S-7 by classification (Kind) moment 1 latter linked of HMI order data (accumulative total second: L), (accumulative total second: H), (μ second: L), (μ second: H) constitute in the moment 4 constantly 3 constantly 2 with it.In addition, transmission data S-8 was made of classification (Kind) moment 5 latter linked with it (sign is outer) of HMI order data.
In addition, in this example, illustrated with the time information of taking from GPS receiver 51 and carried out the example of Synchronous Processing constantly, but the also available time information of taking from beyond the GPS receiver 51, for example the time information of available broadcast radio station or radiowave timepiece etc., from the time information of front panel 23 or PC21 input.
Like this, current differential relay according to this example, because mounting is on the transmission frame that transmission sampling current data are used, the time information that will carry out constantly synchronous usefulness is sent to the other side's device, so can carry out the moment Synchronous Processing of first current differential relay and second current differential relay easily.
Industrial applicability
As mentioned above, current differential relay of the present invention is applicable to the two ends at the guard interval of power transmission line Current differential relay is set respectively, and each current differential relay interconnects each difference between current to transmit route Motor type relay transmits the sampling current data of power transmission line mutually by transmitting route, obtain the difference electricity of sampling current Stream detects the current differential relay of the accident in the guard interval, and is useful, and especially suitable Be in the current differential relay in the place of difficulty in walking in the current differential relay of the other side's device.
Claims (9)
1. current differential relay is arranged on an end of the guard interval of power transmission line, it is characterized in that, comprising:
Transmit data processing division, this transmission data processing division carries out and will obtain flowing through the 1st sampling current data of electric current of a described end of described power transmission line according to sampling, the transmission of another current differential relay that sends to the other end of the guard interval that is arranged on described power transmission line through the transmission route of regulation is handled, and carries out receiving the reception processing of the 2nd sampling current data of electric current that obtains flowing through the described other end of described power transmission line according to sampling from described another current differential relay through this transmissions route;
Differential operational portion, this differential operational portion computing as the spill current between described the 1st sampling current data and described the 2nd sampling current data, be used to detect accident-free described spill current arranged in the described guard interval; And
Information is given and accepted become possible human-machine interface oral area by display part,
Described transmission route has the above transfer rate of 2048kbps,
Described transmission data processing division on the transmission frame that described transmission route is used and transmit, utilizes the remaining area of the described transmission frame of mounting the 1st sampling current data to transmit the demonstration associated data that sends from described human-machine interface oral area described the 1st sampling current data mounting simultaneously.
2. current differential relay as claimed in claim 1 is characterized in that,
Described demonstration associated data comprises:
The adjusted value that sends from the described human-machine interface oral area of self end sends request, and
Send the answer signal of request as described adjusted value, the adjusted value that sends from described human-machine interface oral area to square end.
3. current differential relay as claimed in claim 1 is characterized in that,
Described demonstration associated data comprises:
The logout that sends from the described human-machine interface oral area of self end sends request, and
Send the answer signal of request as described logout, the logout that sends from described human-machine interface oral area to square end.
4. current differential relay as claimed in claim 1 is characterized in that,
Described demonstration associated data comprises from the state of the relay key element of described human-machine interface oral area transmission and device input/output signal.
5. current differential relay as claimed in claim 1 is characterized in that,
Described demonstration associated data comprises the instrumentation value information that sends from described human-machine interface oral area.
6. current differential relay as claimed in claim 1 is characterized in that,
Described demonstration associated data comprises the software version information that sends from described human-machine interface oral area.
7. current differential relay as claimed in claim 1 is characterized in that,
Described demonstration associated data comprises:
Set request from the adjusted value that described human-machine interface oral area sends, and
Set the adjusted value setting result that the described human-machine interface oral area to square end of request sends from receiving described adjusted value.
8. current differential relay as claimed in claim 1 is characterized in that,
Further comprise the synchronous portion of the moment that the moment that makes self end engraves when being synchronized to from GPS that the GPS receiver receives,
Send in the data to square end as described demonstration associated data, comprise time information from synchronous portion of the described moment.
9. current differential relay as claimed in claim 1 is characterized in that,
Further comprise based on according to the time information after the GPS moment Synchronous Processing constantly, make the synchronous synchronous portion of the moment of the moment of self end,
In the data of self termination receipts, comprise described time information as described demonstration associated data.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007160764 | 2007-06-18 | ||
| JP2007160764 | 2007-06-18 | ||
| JP2007337980 | 2007-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101330202A true CN101330202A (en) | 2008-12-24 |
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ID=40205856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101249406A Pending CN101330202A (en) | 2007-06-18 | 2008-06-17 | Current-differential relay device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2009027909A (en) |
| CN (1) | CN101330202A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103380474A (en) * | 2010-10-28 | 2013-10-30 | Abb技术有限公司 | Human-machine interface for a self-supplied relay |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5471193B2 (en) * | 2009-09-03 | 2014-04-16 | 株式会社明電舎 | Remote monitoring method for digital protective relay system |
| JP6153770B2 (en) * | 2013-05-23 | 2017-06-28 | 株式会社日立製作所 | Protection relay device and power system protection system |
-
2007
- 2007-12-27 JP JP2007337980A patent/JP2009027909A/en active Pending
-
2008
- 2008-06-17 CN CNA2008101249406A patent/CN101330202A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103380474A (en) * | 2010-10-28 | 2013-10-30 | Abb技术有限公司 | Human-machine interface for a self-supplied relay |
| CN103380474B (en) * | 2010-10-28 | 2016-05-11 | Abb技术有限公司 | The man-machine interface of self-supporting relay |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009027909A (en) | 2009-02-05 |
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