CN101769973A - Method and device for transforming electric analog signals - Google Patents
Method and device for transforming electric analog signals Download PDFInfo
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- CN101769973A CN101769973A CN200910076086A CN200910076086A CN101769973A CN 101769973 A CN101769973 A CN 101769973A CN 200910076086 A CN200910076086 A CN 200910076086A CN 200910076086 A CN200910076086 A CN 200910076086A CN 101769973 A CN101769973 A CN 101769973A
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Abstract
The invention relates to a method and a device for transforming electric analog signals; wherein the method comprises the following steps: transforming the electric analog signals output by a real-time digital simulation device into electric digital signals; processing the electric digital signals to generate standard digital signals meeting communication standards of a transformer substation; processing the standard digital signals meeting the communication standards of the transformer substation to generate sampling value messages meeting the communication standards of the transformer substation; transmitting the sampling value messages meeting the communication standards of the transformer substation to a digital relay protection device to be detected. The electric analog signal transformation device of the invention can be employed to enable the RTDS to detect the digital relay protection device in a convenient and reliable manner.
Description
Technical field
The invention relates to the detection technique of electric power digital relay protection equipment, about the simulate signal conversion equipment based on the digital relay protection equipment of RTDS, is about a kind of electric analog signals conversion method and device specifically especially.
Background technology
In electric system, relay protection device needs the operation that just can be connected to the grid of Equipment Inspection after testing.Used checkout equipment is generally real-timedigital simulation equipment (RTDS:Real Time Digital Simulation).
RTDS can test the conventional relay protection device that passes through analog quantity interface input voltage and electric current.But promulgation along with the IEC61850 standard; power industry begins to follow this standard and builds transformer station; required relay protection device IO interface is Ethernet interface or optical fiber interface, and information such as voltage and current transmit by the mode of digital signal, and the transmission standard is followed the IEC61850 agreement.
Figure 1A is the annexation synoptic diagram of RTDS and traditional relay protection device, shown in Figure 1A, in the prior art, the signal (voltage, electric current) of RTDS 101 output ± voltage signal of 10V, need after amplifying, amplifier 103 be connected to traditional relay protection device 105 with cable, behind protective device 105, need sampling and conditioning, have transformed error; In addition, adopt cable to connect, can't realize the isolation on electric, be interfered easily, cable can not be laid very longly.In addition, RTDS 101 directly is sent to traditional relay protection device 105 with a switch input quantity signal, and receives a switch output quantity signal from traditional relay protection device 105.
Chinese patent application the 02124251st discloses a kind of power system digital simulation device, the electromechanical transient network and the electro-magnetic transient network of electric system are divided into a plurality of electromechanical transient subnets and a plurality of electro-magnetic transient subnet respectively, carry out the conversion and the transmission of the emulated data between electromechanical transient simulation device and the electromagnetic transient simulation device, so that to the electromechanical transient process and the electromagnetic transient associative simulation of electric system.This Digital Simulation device can carry out the real Time Dynamic Simulation of large-scale electrical power system, and the electromechanical transient and the electromagnetic transient simulation of this electric system are finished in a simulation process.The disclosed content of present patent application is herein incorporated, with as prior art of the present invention.
Summary of the invention
In order to realize the networking detection and the conventionally test of novel relay protection device; the invention provides a kind of electric analog signals conversion method and device; it can convert the analog signals of routine to the digital signal that meets IEC61850, remedies the defective that RTDS can't test this type of new digital relay protection device.
The invention provides a kind of electric analog signals conversion method, described method comprises: with the electric power analog signal conversion of real-timedigital simulation equipment output is the electric power digital signal; Described electric power digital signal is handled, generated the standardized digital signal that meets the transformer substation communication standard; The described standardized digital signal that meets the transformer substation communication standard is handled, generated the sampled value message that meets the transformer substation communication standard; Send the described sampled value message that meets the transformer substation communication standard to digital relay protection equipment to be detected.
The present invention also provides a kind of electric analog signals conversion equipment, and described device comprises AD conversion unit, and the electric power analog signal conversion that is used for the output of real-timedigital simulation equipment is the electric power digital signal; The standardized digital signal generation unit is used for described electric power digital signal is handled, and generates the standardized digital signal that meets the transformer substation communication standard; Sampled value message generation unit is used for the standardized digital signal that meets the transformer substation communication standard that generates is handled, and generates the sampled value message that meets the transformer substation communication standard; Sampled value message delivery unit is used for sending the described sampled value message that meets the transformer substation communication standard to digital relay protection equipment to be detected.
Electric analog signals conversion method provided by the invention and device make RTDS just can test digital protective relaying device by this device, and convenient and reliable, market outlook are comparatively wide.The sampled value signal of electric analog signals conversion equipment is to adopt Ethernet to propagate, and communication distance can reach 100 meters, and this device adopts optical fiber to transmit, and is not subjected to electromagnetic interference (EMI), also can not disturb other equipment.Owing to directly transmit digital signal, so this device has also been realized digital record wave energy, with respect to simulation record ripple, do not have transformed error simultaneously, repdocutbility is strong.This device can be set the sampling rate and the data packet format of digital relay protection device correspondence flexibly, to adapt to different situations.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute limitation of the invention.In the accompanying drawings:
Figure 1A is the linking relationship synoptic diagram of RTDS and traditional relay protection device;
Figure 1B is the system construction drawing that comprises electric analog signals conversion equipment of the present invention;
Fig. 2 is the system construction drawing of the electric analog signals conversion equipment of one embodiment of the invention;
Fig. 3 is the module map of electric analog signals conversion equipment 203 among Figure 1B of the present invention;
Fig. 4 is the module map of another electric analog signals conversion equipment 400 of the present invention;
Fig. 5 is another system construction drawing that comprises electric analog signals conversion equipment of the present invention;
Fig. 6 is the module map of another electric analog signals conversion equipment 600 of the present invention;
Fig. 7 is the module map of another electric analog signals conversion equipment 700 of the present invention;
Fig. 8 is the module map of the electric analog signals conversion equipment 800 of another embodiment of the present invention;
Fig. 9 is the front panel synoptic diagram of electric analog signals conversion equipment 800 shown in Figure 8;
Figure 10 is the rear panel synoptic diagram of electric analog signals conversion equipment 800 shown in Figure 8;
Shown in Figure 11 is system's connection layout of electric analog signals conversion equipment 800 shown in Figure 8;
Shown in Figure 12 is the process flow diagram of embodiment of the invention electric analog signals conversion method;
Shown in Figure 13 is the process flow diagram of another embodiment of the present invention electric analog signals conversion method;
Shown in Figure 14 is the process flow diagram of another embodiment of the present invention electric analog signals conversion method;
Shown in Figure 15 is the process flow diagram of another embodiment of the present invention electric analog signals conversion method.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer,, the present invention is described in further details below in conjunction with embodiment and accompanying drawing.At this, exemplary embodiment of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.
The embodiment of the invention provides a kind of electric analog signals conversion equipment, and the present invention is described in detail below in conjunction with accompanying drawing.
Figure 1B is the system construction drawing that comprises electric analog signals conversion equipment of the present invention, and shown in Figure 1B, electric analog signals converting system 200 comprises RTDS 201, electric analog signals conversion equipment 203 and digital relay protection equipment 205.Wherein electric analog signals conversion equipment 203 is coupled to RTDS 201, receives the simulating signal of RTDS 201 outputs, analog signal conversion is become to meet the sampled value message and the output of IEC61850-9-1/2 standard; Digital relay protection equipment 205 is coupled to electric analog signals conversion equipment 203, receives the sampled value message that meets the IEC61850-9-1/2 standard of electric analog signals conversion equipment 203 outputs.
Fig. 2 is the system construction drawing of the electric analog signals conversion equipment of one embodiment of the invention, and as shown in Figure 2, the electric analog signals converting system comprises RTDS 1, electric analog signals conversion equipment 10 and digital relay protection equipment 3.Wherein electric analog signals conversion equipment 10 comprises:
AD conversion unit 11 is connected in RTDS 1, and the electric power analog signal conversion that is used for RTDS 1 output is the electric power digital signal;
Standardized digital signal generation unit 13 is connected in AD conversion unit 11, is used for described electric power digital signal is handled, and generates the standardized digital signal that meets the IEC61850 standard;
Sampled value message generation unit 15 is connected in standardized digital signal generation unit 13, is used for the standardized digital signal that meets the IEC61850 standard that generates is handled, and generates the sampled value message that meets the IEC61850 standard;
Sampled value message delivery unit 17 is connected in sampled value message generation unit 15, is used for sending the sampled value message of the described IEC61850 of meeting standard to digital relay protection equipment 3 to be detected, and sampled value message delivery unit 17 can comprise multichannel light mouth.
In another embodiment of the present invention, electric analog signals conversion equipment 10 also can comprise a sampled value message storage unit, is used for the sampled value message of the described IEC61850 of meeting standard is stored.
In another embodiment of the present invention, sampled value message generation unit 15 also can comprise a sample format module is set, and is used for the form of sampled value message is provided with.
In another embodiment of the present invention, electric analog signals conversion equipment 10 also can comprise:
The switching value AD conversion unit is used for the analog switch amount of real-timedigital simulation equipment output is converted to digital switch quantity;
Sampled value message generation unit 15 also is used for described standardized digital signal and the digital switch quantity that meets the transformer substation communication standard handled, and generates the sampled value message that meets the transformer substation communication standard;
The switching value D/A conversion unit is used for the digital switch quantity of digital relay protection equipment feedback is converted to the analog switch amount, and sends real-timedigital simulation equipment RTDS to.
Fig. 3 is the module map of electric analog signals conversion equipment 203 among Figure 1B of the present invention, as shown in Figure 3, electric analog signals conversion equipment 203 comprises: A/D converting unit 301, data acquisition unit 303, data processing unit 305, network interface unit 307, switching value input block 309 and switching value output unit 311, wherein:
The input end and the RTDS of A/D converting unit 301 couple, receive the simulating signal of RTDS output, with the digital signal that converts 16 behind the analog signal conditioner to, in one embodiment of this invention, the high-speed a/d conversion chip that data acquisition unit 301 can adopt TI company to release, its detailed index is: 16, and 6 the tunnel, 250kSPS.High-speed a/d conversion chip inside by discharge circuit will import ± analog signal conversion of 10V becomes satisfactory digital signal;
Switching value input block 309 is coupled to data processing unit 305, receives the switching value input signal of RTDS output, is used to reflect node state (connecting or disconnecting);
Switching value output unit 311 is coupled to data processing unit 305, and the switching value output signal is sent to RTDS, is used to control outside relay output node.
In the present embodiment, network interface unit 307 also is used to receive the operating state message of digital relay protection equipment output, and the operating state message that receives is outputed to data processing unit 305; The operating state message that data processing unit 305 is used for receiving is converted to the operating state simulating signal, and sends the operating state simulating signal to real-timedigital simulation equipment RTDS.The operating state message can be general object-oriented transformer substation case (GOOSE) message that meets the IEC61850 agreement; comprise the protection breaker tripping and closing signal that protection or intelligent switch transmit in the GOOSE message; data processing unit 305 comprises a GOOSE packet parsing module, is used to resolve the GOOSE message of tested protective device or intelligent switch transmission.
Fig. 4 is the module map of another electric analog signals conversion equipment 400 of the present invention, as shown in Figure 4, electric analog signals conversion equipment 400 comprises: A/D converting unit 401, data acquisition unit 403, data processing unit 405, network interface unit 407, switching value input block 409, switching value output unit 411 and host computer interface unit 413.Wherein, host computer interface unit 413 is coupled to data processing unit 405, adopt ICP/IP protocol to link to each other with host computer by Ethernet, utilize host computer that acquisition parameter is configured, in the present embodiment, host computer interface unit 413 comprises an electricity mouth, and host computer can be desktop computer or notebook computer, all the other ingredients of electric analog signals conversion equipment 400 are similar to electric analog signals conversion equipment 203, so do not repeat them here.
Fig. 5 is another system construction drawing that comprises electric analog signals conversion equipment of the present invention, and as shown in Figure 5, electric analog signals converting system 500 comprises host computer 501, electric analog signals conversion equipment 400 and digital relay protection equipment 503.Wherein electric analog signals conversion equipment 400 is coupled to host computer 501, receives the simulating signal of host computer 501 outputs, analog signal conversion is become to meet the sampled value message and the output of IEC61850-9-1/2 standard; Digital relay protection equipment 503 is coupled to electric analog signals conversion equipment 400, receives the sampled value message that meets the IEC61850-9-1/2 standard of electric analog signals conversion equipment 400 outputs.By being connected with host computer 501, electric analog signals conversion equipment 400 also can be used as relay-protection tester and uses.
Fig. 6 is the module map of another electric analog signals conversion equipment 600 of the present invention, as shown in Figure 6, electric analog signals conversion equipment 600 comprises: A/D converting unit 601, data acquisition unit 603, data processing unit 605, network interface unit 607, switching value input block 609, switching value output unit 611 and memory cell 613.Wherein, memory cell 613, be coupled to data processing unit 605, be used to preserve the acquisition parameter such as definition, sampling rate, ASDU number, LDName of drift, correction factor, each the road analog quantity of A/D, in the present embodiment, memory cell 613 can be one or more in hard disk, flash memory or the internal memory, and all the other ingredients of electric analog signals conversion equipment 600 are similar to electric analog signals conversion equipment 203, so do not repeat them here.
In another embodiment of the present invention, data processing unit 305 can also have the record wave energy, sampled value can be kept in the memory cell 613, calls for host computer, is convenient to analyzing failure cause.
Fig. 7 is the module map of another electric analog signals conversion equipment 700 of the present invention, as shown in Figure 7, electric analog signals conversion equipment 700 comprises: A/D converting unit 701, data acquisition unit 703, data processing unit 705, network interface unit 707, switching value input block 709, switching value output unit 711 and GPS interface unit 713.Wherein, GPS interface unit 713 is coupled to data processing unit 705, can make electric analog signals conversion equipment 700 adopt the GPS pulse per second (PPS)s to carry out synchronously by an external GPS equipment, realizes that many sets of data conversion equipment works simultaneously; All the other ingredients of electric analog signals conversion equipment 700 are similar to electric analog signals conversion equipment 203, so do not repeat them here.
Shown in Figure 8 is the module map of the electric analog signals conversion equipment 800 of another embodiment of the present invention, and as shown in Figure 8, electric analog signals conversion equipment 800 comprises:
2 16 high-speed AD 801, the high-speed a/d conversion chip that adopts TI company to release, index is in detail: 16, the 6 tunnel, 250kSPS couples with RTDS, reception RTDS output ± the 10V simulating signal, with the digital signal that converts 16 behind the analog signal conditioner to;
TI high-speed dsp 803, dominant frequency is 160MHz, be coupled to 16 high-speed AD 801, be used to control 16 high-speed AD 801, gatherer process according to 16 high-speed AD 801 of acquisition parameter control of setting, receive the digital signal and the output of 801 conversions of 16 high-speed AD, acquisition parameter can comprise: the definition of the drift of A/D, correction factor, each road analog quantity, sampling rate etc.;
3 road light mouths 807, be coupled to arm processor 805, export the sampled value message that receives to digital relay protection equipment, can export three the tunnel simultaneously and meet the sampled value message (every road sampled value message can comprise 12 tunnel sample information at most) of IEC61850-9-1/2 standard, and can guarantee the time interval between message;
SDRAM 811, are coupled to arm processor 805, are used to store recorder data during operation, show the waveform of acquired signal in real time;
8 way switch amounts input 815 is coupled to arm processor 805, and eight pairs of opening into amount of isolating fully are provided, and imports not polarity, can detect idle contact, source contact be arranged (15V-250V), and the temporal resolution of input signal is 100 μ s;
CAN bus interface 821 is coupled to arm processor 805, and input and output that can switch amount are expanded;
8 way switch amounts output 823 is coupled to arm processor 805, provides eight pairs of switching values of isolating fully to be output as idle contact output.
Need be connected to host computer configuration acquisition parameter by Ethernet when electric analog signals conversion equipment 800 powers on for the first time, mainly comprise: the definition of the drift of A/D, correction factor, each road analog quantity, sampling rate, ASDU number, LDName, TCI, APPID, goCB, GOOSEID, MAC Address and switching value arrive the mapping relations of GOOSE etc.Acquisition parameter after configuration finishes can be preserved, and can not lose with acquisition parameter after guaranteeing power down.
In use; the analog quantity output of RTDS need be received the analog quantity input interface of electric analog signals conversion equipment 800; connect the light mouth of electric analog signals conversion equipment 800 and the light mouth of digital relay protection device by optical fiber, can automatically the analog quantity of importing be converted to the sampled value message output that meets configuration requirement after powering on.
Open the action message that is used to obtain measurand into amount; The amount of leaving provides status signal for tested equipment, is used for starting at the trial protection or external unit.
Need to revise systematic parameter, call recorder data or need use as digital protecting tester the time, online by netting twine, move upper software and both can finish correlation function.
The sampling rate of electric analog signals conversion equipment 800 of the present invention can be made as the highest 255 points of ripple weekly, the ASDU number of each sampled value message of output can define flexibly, three road light mouths are exported the sampled value message of Different L DName, TCI and MAC Address simultaneously, also can export the sampled value message of a plurality of Different L DName, TCI and MAC Address at same light mouth.Simultaneously, 24 tunnel analog quantitys match with three light mouths, can satisfy the required whole sampled value information of 3 tunnel sampled value messages, and the way of non-limiting analog quantity can not increase again, realize that by synchronized sampling many covering devices work simultaneously.
Shown in Figure 9 is the front panel synoptic diagram of electric analog signals conversion equipment 800 shown in Figure 8, and as shown in Figure 9, this device profile is the 2U cabinet, can be contained on the rack and use.Comprise on the front panel that power switch 901, three road light mouths 903 and corresponding pilot lamp 905, a road network mouth 907,8 tunnel open into amount interface 909 and 4 road amount of leaving interfaces 911; wherein: power switch 901 is used to control the opening and closing of electric analog signals conversion equipment 800; light mouth 903 can export the sampled value message to digital relay protection equipment; pilot lamp 905 is used for the duty of display light mouth 903; network interface 907 can be adopted with host computer by Ethernet and link to each other; open into amount interface 909 and can detect idle contact, source contact is arranged, the amount of leaving interface 911 is idle contact output.
Shown in Figure 10 is the rear panel synoptic diagram of electric analog signals conversion equipment 800 shown in Figure 8, as shown in figure 10, comprise supply socket 913, GPS interface 915,24 tunnel analog quantity input interfaces 917 and 4 road amount of leaving interfaces 911 on the rear panel, wherein: supply socket 913 is used to connect a power supply, GPS interface 915 can that electric analog signals conversion equipment 800 is carried out pulse per second (PPS) be synchronous by connecting an external GPS equipment, and analog quantity input interface 917 is used for gathering analog quantity.
Shown in Figure 11 is system's connection layout of electric analog signals conversion equipment 800 shown in Figure 8; as Fig. 8 and shown in Figure 11; 24 tunnel simulating signals and the 8 way switch amount input signals of reception RTDS 201 outputs of electric analog signals conversion equipment 800; convert digital message to through electric analog signals conversion equipment 800 and output to digital relay protection equipment 205 by the light mouth; digital relay protection equipment 205 is back to electric analog signals conversion equipment 800 with the digital signal of a feedback, and electric analog signals conversion equipment 800 is converted to the digital signal of feedback 8 way switch amount output signals and is sent to RTDS 201.Electric analog signals conversion equipment 800 among Figure 11 also can connect a plurality of digital relay protection equipment 205, simultaneously a plurality of digital relay protection equipment 205 is tested.
Shown in Figure 12 is the process flow diagram of embodiment of the invention electric analog signals conversion method, and in conjunction with Fig. 2 and shown in Figure 12, embodiment of the invention electric analog signals conversion method comprises the steps:
Step 1201, AD conversion unit 11 is the electric power digital signal with the electric power analog signal conversion of RTDS1 output;
Step 1203,13 pairs of described electric power digital signals of standardized digital signal generation unit are handled, and generate the standardized digital signal that meets the IEC61850 standard;
Step 1205, the standardized digital signal of the 15 pairs of described IEC61850 of meeting standards of sampled value message generation unit is handled, and generates the sampled value message that meets the IEC61850 standard;
Step 1207, sampled value message delivery unit 17 sends the sampled value message of the described IEC61850 of meeting standard to digital relay protection equipment 3 to be detected.
In another embodiment of the present invention, described method can also comprise: the operating state message of digital relay protection equipment output is converted to the operating state simulating signal, and outputs to real-timedigital simulation equipment.
In another embodiment of the present invention, described method can also comprise the step that the sampled value message that meets IEC61850 is stored so that with history data store in storer.In step 1201, AD conversion unit 11 can be changed 24 road electric power simulating signals simultaneously.In step 1205, can also the form of sampled value message be provided with.In step 1207, the sampled value message that meets IEC61850 can export digital relay protection equipment to by multichannel light mouth, such as exporting simultaneously by 3 road light mouths.
In another embodiment of the present invention, embodiment of the invention electric analog signals conversion method also comprises the steps:
The switching value AD conversion unit is converted to digital switch quantity with the analog switch amount of real-timedigital simulation equipment output;
15 pairs of sampled value message generation units meet the electric power digital signal and the digital switch quantity of transformer substation communication standard to be handled, and generates the sampled value message that meets the transformer substation communication standard; And
The switching value D/A conversion unit is converted to the analog switch amount with the digital switch quantity of digital relay protection equipment feedback, and sends real-timedigital simulation equipment to.
Shown in Figure 13 is the process flow diagram of another embodiment of the present invention electric analog signals conversion method, and in conjunction with Fig. 6 and shown in Figure 13, embodiment of the invention electric analog signals conversion method comprises the steps:
Shown in Figure 14 is the process flow diagram of another embodiment of the present invention electric analog signals conversion method, and in conjunction with Fig. 4 and shown in Figure 14, embodiment of the invention electric analog signals conversion method comprises the steps:
Shown in Figure 15 is the process flow diagram of another embodiment of the present invention electric analog signals conversion method, and in conjunction with Fig. 7 and shown in Figure 15, embodiment of the invention electric analog signals conversion method also comprises:
All the other steps shown in Figure 15 and step shown in Figure 14 are similar, so do not repeat them here.
By above embodiments of the invention, beneficial effect of the present invention as can be seen is:
1. this device both can offline operation, and its effect is similar to the merge cells (MU) in the digital transformer substation; It is online also can to connect host computer (PC) by Ethernet, uses as digital oscillograph or digital relay protection device to test instrument;
2. adopt Ethernet as on-line mode, have characteristics quick, reliable, safety and stability; With respect to traditional parallel port, USB mouth, realized the isolation on the electrical equipment preferably, do not need driver, communication distance long (can reach 100M);
3. this device adopts the structure of ARM and DSP, and DSP is responsible for data acquisition, and ARM is used for generating, sending sampled value message and upper machine communication.This structure has ensured the high speed of system's required function, stable, reliably working;
4. possess three road Guang Kou, can send three the tunnel simultaneously and meet the sampled value message that IEC61850-9-1/-9-2 requires, can satisfy demand in most cases;
5. the sampling rate of sampled value message (ripple sampled point weekly), ASDU number (what sampled points are formed a sampled value message) all can be set flexibly according to actual conditions;
6. possess the record wave energy, sampled value can be kept in the internal RAM, be convenient to analyzing failure cause.
RTDS just can test digital protective relaying device by this device, and is convenient and reliable, and market outlook are comparatively wide.
Above-described embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is the specific embodiment of the present invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. an electric analog signals conversion method is characterized in that, described method comprises:
With the electric power analog signal conversion of real-timedigital simulation equipment output is the electric power digital signal;
Described electric power digital signal is handled, generated the standardized digital signal that meets the transformer substation communication standard;
The described standardized digital signal that meets the transformer substation communication standard is handled, generated the sampled value message that meets the transformer substation communication standard;
Send the described sampled value message that meets the transformer substation communication standard to digital relay protection equipment to be detected.
2. electric analog signals conversion method as claimed in claim 1 is characterized in that, described method also comprises:
The operating state message of digital relay protection equipment output is converted to the operating state simulating signal, and outputs to real-timedigital simulation equipment.
3. electric analog signals conversion method as claimed in claim 1 is characterized in that, described method also comprises:
The described sampled value message that meets the transformer substation communication standard is stored.
4. electric analog signals conversion method as claimed in claim 1 is characterized in that, the described standardized digital signal that meets the transformer substation communication standard is handled comprises: the form to the sampled value message is provided with.
5. electric analog signals conversion method as claimed in claim 1; it is characterized in that, describedly send the described sampled value message that meets the transformer substation communication standard to digital relay protection equipment to be detected and comprise: give digital relay protection equipment to be detected by the oral instructions of multichannel light the described sampled value message that meets the transformer substation communication standard.
6. electric analog signals conversion method as claimed in claim 1, it is characterized in that described electric power analog signal conversion with the output of real-timedigital simulation equipment comprises for the electric power digital signal: 24 road electric power simulating signals to the output of real-timedigital simulation equipment are carried out analog to digital conversion simultaneously;
Describedly send the described sampled value message that meets the transformer substation communication standard to digital relay protection equipment to be detected and comprise: send the described sampled value message that meets the transformer substation communication standard to digital relay protection equipment to be detected simultaneously by three road light mouths.
7. electric analog signals conversion method as claimed in claim 1 is characterized in that, described method also comprises:
The analog switch amount of real-timedigital simulation equipment output is converted to digital switch quantity;
Described electric power digital signal and the digital switch quantity that meets the transformer substation communication standard handled, generated the sampled value message that meets the transformer substation communication standard; And
The digital switch quantity of digital relay protection equipment feedback is converted to the analog switch amount, and sends real-timedigital simulation equipment to.
8. an electric analog signals conversion equipment is characterized in that, described device comprises:
AD conversion unit, the electric power analog signal conversion that is used for the output of real-timedigital simulation equipment is the electric power digital signal;
The standardized digital signal generation unit is used for described electric power digital signal is handled, and generates the standardized digital signal that meets the transformer substation communication standard;
Sampled value message generation unit is used for the standardized digital signal that meets the transformer substation communication standard that generates is handled, and generates the sampled value message that meets the transformer substation communication standard;
Sampled value message delivery unit is used for sending the described sampled value message that meets the transformer substation communication standard to digital relay protection equipment to be detected.
9. electric analog signals conversion equipment as claimed in claim 8 is characterized in that, described device also comprises:
Operating state packet parsing unit is used for the operating state message of digital relay protection equipment output is converted to the operating state simulating signal, and outputs to real-timedigital simulation equipment.
10. electric analog signals conversion equipment as claimed in claim 8 is characterized in that, described device also comprises:
Sampled value message storage unit is used for the described sampled value message that meets the transformer substation communication standard is stored.
11. electric analog signals conversion equipment as claimed in claim 8 is characterized in that, described sampled value message generation unit comprises:
Sample format is provided with module, is used for the form of sampled value message is provided with.
12. electric analog signals conversion equipment as claimed in claim 8 is characterized in that, described sampled value message delivery unit comprises:
Multichannel light mouth, every road Guang Kou are used to send one group of sampled value message that meets the transformer substation communication standard.
13. electric analog signals conversion equipment as claimed in claim 8, it is characterized in that, described AD conversion unit comprises: 20 four road analog-to-digital conversion modules are used for 20 four road electric power simulating signals of real-timedigital simulation equipment output are carried out analog to digital conversion simultaneously;
Described sampled value message delivery unit comprises: three road Guang Kou are used for exporting simultaneously three tunnel sampled value messages that meet the transformer substation communication standard.
14. electric analog signals conversion equipment as claimed in claim 8 is characterized in that, described device also comprises:
The switching value AD conversion unit is used for the analog switch amount of real-timedigital simulation equipment output is converted to digital switch quantity;
Sampled value message generation unit is used for described standardized digital signal and the digital switch quantity that meets the transformer substation communication standard handled, and generates the sampled value message that meets the transformer substation communication standard;
The switching value D/A conversion unit is used for the digital switch quantity of digital relay protection equipment feedback is converted to the analog switch amount, and sends real-timedigital simulation equipment to.
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| CN102129001A (en) * | 2011-01-07 | 2011-07-20 | 山东大学 | Digital relay protection device testing system and method |
| CN102324195A (en) * | 2011-09-22 | 2012-01-18 | 华北电网有限公司培训中心 | Unicom training device for dispatching training and relay protection training in power training |
| CN102662330A (en) * | 2012-04-13 | 2012-09-12 | 哈尔滨工业大学 | Fault simulation device of fiber channel avionics environment (FC-AE)-1533 device |
| CN103354025A (en) * | 2013-06-19 | 2013-10-16 | 许昌开普电器检测研究院 | RTDS data transmission device and method based on serial communication |
| CN103616592A (en) * | 2013-11-28 | 2014-03-05 | 国家电网公司 | Relay protection real-time digital dynamic simulation test system based on IEC 61850 |
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