CN114124588B - Interface data interaction device, method and system - Google Patents
Interface data interaction device, method and system Download PDFInfo
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- CN114124588B CN114124588B CN202111156070.2A CN202111156070A CN114124588B CN 114124588 B CN114124588 B CN 114124588B CN 202111156070 A CN202111156070 A CN 202111156070A CN 114124588 B CN114124588 B CN 114124588B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2581—Multimode transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2589—Bidirectional transmission
- H04B10/25891—Transmission components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/26—Special purpose or proprietary protocols or architectures
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Abstract
The invention discloses an interface data interaction device, method and system, wherein an analog quantity conversion module is provided with a plurality of analog quantity output interfaces, a switching quantity conversion module is provided with a plurality of opening interfaces and a plurality of opening interfaces, so that data interaction between a simulation unit and a plurality of control devices is realized, a large number of communication boards are not required to be configured when a large number of control devices are involved, the investment is small, and the maintenance is simple.
Description
Technical Field
The invention relates to an interface data interaction device, method and system, and belongs to the technical field of power systems and automation.
Background
The control system hardware in-loop simulation experiment requires real-time interaction of data between the simulation unit and the control system. Taking a widely applied safe and stable control system in a power grid as an example, the data information interacted with the safe and stable control system needs to be converted into digital signals and electrical signals (including analog quantity and switching value) through sampling boards in different forms, including an analog quantity output board, a switching value input board and the like. When the control system hardware in-loop simulation experiment involves a large number of control devices, the real-time interaction data is more, a large number of communication boards and cards need to be synchronously configured, the investment is huge, and the maintenance is difficult.
Disclosure of Invention
The invention provides an interface data interaction device, method and system, which solve the problem that a large number of communication boards need to be synchronously configured when real-time interaction data are more.
In order to solve the technical problems, the invention adopts the following technical scheme:
an interface data interaction device is arranged between the simulation unit and the control device;
the interface data interaction device comprises a data encoding and decoding module, an analog quantity conversion module and a switching value conversion module;
and a data encoding and decoding module: decoding the data sent by the simulation unit, sending the secondary side digital quantity obtained by decoding to an analog quantity conversion module, and sending the pseudo switching quantity obtained by decoding to a switching quantity conversion module; coding the pseudo switching value sent by the switching value conversion module, and sending the data required by simulation obtained by coding to a simulation unit; wherein the pseudo switching amount is switching amount information other than 0/1;
analog conversion module: converting the secondary side digital quantity into an analog quantity, and transmitting the analog quantity to a control device;
the switching value conversion module is used for: converting the pseudo switching value into switching value, and transmitting the switching value to a control device; converting the switching value sent by the control device into a pseudo switching value, and sending the pseudo switching value to the data encoding and decoding module;
the analog quantity conversion module is provided with a plurality of analog quantity output interfaces, the analog quantity output interfaces are externally connected with analog quantity interfaces of the control device, the switching quantity conversion module is provided with a plurality of opening interfaces and a plurality of opening interfaces, the opening interfaces are externally connected with opening interfaces of the control device, and the opening interfaces are externally connected with opening interfaces of the control device.
The interface data interaction device also comprises a protocol interface module, wherein the protocol interface module is used for realizing data forwarding between the data encoding and decoding module and the simulation unit.
The protocol interface module is provided with a plurality of pairs of multimode fiber interfaces, and is externally connected with the simulation unit through the multimode fiber interfaces.
The protocol interface module is communicated with the simulation unit through an aurora protocol.
An interface data interaction method comprises an uplink method and a downlink method;
the uplink method comprises the following steps:
receiving data sent by a simulation unit;
decoding the data sent by the simulation unit to obtain a secondary side digital quantity and a pseudo switching value; wherein the pseudo switching amount is switching amount information other than 0/1;
converting the secondary side digital quantity obtained by decoding into an analog quantity, and transmitting the analog quantity to a control device;
converting the pseudo switching value obtained by decoding into switching value, and transmitting the switching value to a control device;
the downlink method comprises the following steps:
receiving the switching value sent by the control device and converting the switching value into a pseudo switching value;
coding the pseudo switching value to obtain data required by simulation;
and sending the data required by the simulation to a simulation unit.
The data sent by the simulation unit are aurora protocol data.
The data required for the simulation is aurora protocol data.
Decoding the data sent by the simulation unit to obtain a secondary side digital quantity and a pseudo switching value, wherein the method comprises the following steps:
decoding the data sent by the simulation unit to obtain primary side digital quantity and pseudo switching value;
the primary-side digital quantity is converted into a secondary-side digital quantity.
If the primary digital quantity is current data, the conversion process comprises:
converting the primary side digital quantity into a secondary side digital quantity according to the primary side digital quantity and a preset primary side and secondary side fixed transformation ratio;
if the primary digital quantity is voltage data, the conversion process includes:
sampling and calculating the primary side digital quantity to obtain an effective value;
determining the voltage level of the primary side digital quantity according to the effective value and the preset voltage level;
calculating the transformation ratio of the primary side and the secondary side according to the voltage grade and the rated voltage value of the secondary side;
the primary side digital quantity is converted into a secondary side digital quantity according to the primary side digital quantity and the transformation ratio of the primary side and the secondary side.
An interface data interaction system comprises a simulation unit, an interface data interaction device and a control device; the control device and the simulation unit are both connected with the interface data interaction device.
The invention has the beneficial effects that: the analog quantity conversion module is provided with a plurality of analog quantity output interfaces, the switching quantity conversion module is provided with a plurality of opening interfaces and a plurality of opening interfaces, so that data interaction between the simulation unit and a plurality of control devices is realized, a large number of communication boards are not required to be configured when a large number of control devices are involved, the investment is small, and the maintenance is simple.
Drawings
FIG. 1 is a first block diagram of an interface data interaction device;
FIG. 2 is a second block diagram of an interface data interaction device;
FIG. 3 is a flow chart for converting primary side digital quantities into secondary side digital quantities;
fig. 4 is a block diagram of an interface data interaction system.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in FIG. 1, the interface data interaction device is arranged between the simulation unit and the control device, one side of the interface data interaction device is externally connected with the simulation unit, and the other side of the interface data interaction device is externally connected with one or more control devices, so that data interaction between the simulation unit and the control device is realized.
The interface data interaction device comprises a data encoding and decoding module, an analog quantity conversion module and a switching value conversion module. The data coding and decoding module is externally connected with the simulation unit, the analog quantity conversion module and the switching value conversion module are both connected with the data coding and decoding module, the analog quantity conversion module is provided with a plurality of analog quantity output interfaces, the analog quantity output interfaces are externally connected with analog quantity interfaces of the control device, the switching value conversion module is provided with a plurality of opening interfaces and a plurality of opening interfaces, the opening interfaces are externally connected with the opening interfaces of the control device, and the opening interfaces are externally connected with the opening interfaces of the control device.
The analog quantity conversion module of the device is provided with a plurality of analog quantity output interfaces, the switching quantity conversion module is provided with a plurality of opening interfaces and a plurality of opening interfaces, so that data interaction between the simulation unit and a plurality of control devices is realized, a large number of communication boards are not required to be configured when a large number of control devices are involved, the investment is small, and the maintenance is simple.
The specific functions of the data encoding and decoding module, the analog quantity conversion module and the switching quantity conversion module can be seen from the names of the data encoding and decoding module, the analog quantity conversion module and the switching quantity conversion module.
The data encoding and decoding module receives data from the simulation unit, the data are generally transmitted through a agreed protocol, so that after the data are obtained, the data are required to be decoded, and secondary side digital quantity which can be converted into analog quantity and pseudo-switching quantity which can be converted into switching quantity are obtained, wherein the secondary side digital quantity is sent to the analog quantity conversion module, the pseudo-switching quantity is switching quantity information which is not 0/1, and the pseudo-switching quantity is sent to the switching quantity conversion module; the data encoding and decoding module can also acquire the pseudo switching value from the switching value conversion module, encode the pseudo switching value to acquire data required by simulation, and send the data to the simulation unit.
The analog quantity conversion module receives the secondary side digital quantity obtained by decoding the data encoding and decoding module, converts the digital quantity into analog quantity, such as voltage, current and other analog quantity, and sends the analog quantity to the connected control device.
The switching value conversion module receives the pseudo switching values obtained by decoding of the data encoding and decoding module, converts the pseudo switching values into switching values, namely real switching values (0/1), and sends the switching values to the connected control device; the module can also receive the switching value sent by the control device, and perform reverse processing on the switching value, namely, the switching value is converted into a pseudo switching value, and the pseudo switching value is sent to the data encoding and decoding module for encoding and sending.
The real-time performance of the data is ensured by the data interaction between the simulation unit and the control system, and the data needs to be acquired from the simulation unit or sent to the simulation unit as soon as possible, so a protocol interface module is further arranged between the data encoding and decoding module and the simulation unit as shown in fig. 2.
The protocol interface module is mainly used for realizing data forwarding, and the module and the simulation unit are communicated through an aurora protocol to realize high-speed data transmission; in order to meet the requirement of high-speed data transmission, a plurality of pairs of multimode fiber interfaces are further arranged on the protocol interface module, and a simulation unit is externally connected through the multimode fiber interfaces.
The device can meet the voltage and current analog quantity acquisition and switching quantity access of a plurality of sets of control devices, greatly reduces the configuration quantity of sampling plates in simulation experiments, reduces the experimental investment, saves experimental resources and improves the experimental efficiency.
The interface data interaction method corresponding to the device comprises an uplink method and a downlink method; the uplink method is a method for sending data to the control device by the simulation unit, and mainly comprises the steps of sending analog quantity and switching value; the downlink method is a method for transmitting data to the simulation unit by the control device, and mainly transmits switching value.
The uplink method comprises the following steps:
step 1, receiving data sent by a simulation unit;
the step is realized by a protocol interface module and is used for acquiring aurora protocol data, namely data meeting the transmission requirement of the aurora protocol.
Step 2, decoding the data sent by the simulation unit to obtain a secondary side digital quantity and a pseudo switching value;
the step is realized by a data encoding and decoding module, and the aurora protocol data is decoded to obtain a primary side digital quantity and a pseudo switching quantity, wherein the pseudo switching quantity directly performs subsequent flow, and the primary side digital quantity needs to be converted, so that the primary side digital quantity is converted into a secondary side digital quantity.
As shown in fig. 3, the conversion of the digital quantity adopts a transformation ratio adaptive processing method, and can be realized by adopting the following steps/methods:
if the primary digital quantity is current data, the conversion process comprises:
and converting the primary side digital quantity into a secondary side digital quantity according to the primary side digital quantity and a preset primary side and secondary side fixed transformation ratio.
When the current ratio of the primary side is calculated by the interface device, the rated current value of the primary side is 4000A by default, and the rated current value of the secondary side is 1A, so that the current ratio in the interface device is fixed to 4000/1, and the current digital quantity of the primary side is divided by the current digital quantity of the secondary side to obtain the current digital quantity of the secondary side.
If the primary digital quantity is voltage data, the conversion process includes:
1) Sampling and calculating the primary side digital quantity to obtain an effective value;
2) Determining the voltage level of the primary side digital quantity according to the effective value and the preset voltage level;
before the device is used, grading the primary voltage level supported by the control device, wherein the voltage level comprises all voltage levels related to the control device, such as 500KV, 220KV, 110KV and the like; the voltage level of the primary side digital quantity can be determined through the effective value;
3) Calculating the transformation ratio of the primary side and the secondary side according to the voltage grade and the rated voltage value of the secondary side;
the rated voltage value of the secondary side of the control device is 2.5V, and the voltage level divided by 2.5V is the transformation ratio of the primary side and the secondary side;
4) Converting the primary side digital quantity into a secondary side digital quantity according to the primary side digital quantity and the transformation ratio of the primary side and the secondary side; that is, the primary digital quantity is divided by the transformation ratio to obtain the secondary digital quantity.
Step 3, converting the secondary side digital quantity obtained by decoding into an analog quantity, and transmitting the analog quantity to a control device;
the step is realized by an analog quantity conversion module, which is used for performing digital-to-analog conversion and sending the current and voltage obtained by conversion to a control device.
Step 4, converting the pseudo switching value obtained by decoding into switching value, and sending the switching value to a control device;
the step is realized by a switching value conversion module, the pseudo switching value is generally 32-bit switching value information, the 32-bit switching value information is converted into real 0/1 switching value, and the 0/1 switching value is sent to a control device.
The downlink method comprises the following steps:
s1) receiving the switching value sent by the control device and converting the switching value into pseudo switching value; the method comprises the steps of carrying out a first treatment on the surface of the
The step is realized by a switching value conversion module and is the reverse flow of the step 4.
S2) coding the pseudo switching value to obtain data required by simulation, namely aurora protocol data;
the step is realized by a data encoding and decoding module, and a reverse flow of the pseudo switching value is obtained for decoding.
S3) sending data required by simulation to a simulation unit;
the step is realized through a protocol interface module, and aurora protocol data is sent to the simulation unit.
When the interface data interaction device is used, an interface data interaction system shown in fig. 4 can be built, and the system comprises a simulation unit, the interface data interaction device and a control device; the control device and the simulation unit are both connected with the interface data interaction device.
The interface data interaction device is connected with the simulation unit through an optical fiber, and performs bidirectional communication by adopting an aurora protocol.
The control device mainly comprises an input/output unit and a main control unit, wherein the input/output unit is in bidirectional communication with the main control unit through an optical fiber; the analog quantity interface of the input/output unit is connected with the analog quantity output interface of the interface data interaction device, so that the analog quantity is received; the input/output unit is connected with the input/output interface of the interface data interaction device, and the input/output unit is connected with the input/output interface of the interface data interaction device, so that the switching value interaction is realized.
The system can build a plurality of control devices, and realizes the data interaction between the simulation unit and the plurality of control devices through a plurality of analog output interfaces, a plurality of opening interfaces and a plurality of opening interfaces.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be finally understood that the foregoing embodiments are merely illustrative of the technical solutions of the present invention and not limiting the scope of protection thereof, and although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes, modifications or equivalents may be made to the specific embodiments of the invention, and these changes, modifications or equivalents are within the scope of protection of the claims appended hereto.
Claims (9)
1. An interface data interaction device is characterized in that the interface data interaction device is arranged between a simulation unit and a control device;
the interface data interaction device comprises a data encoding and decoding module, an analog quantity conversion module and a switching value conversion module;
and a data encoding and decoding module: decoding the data sent by the simulation unit, sending the secondary side digital quantity obtained by decoding to an analog quantity conversion module, and sending the pseudo switching quantity obtained by decoding to a switching quantity conversion module; coding the pseudo switching value sent by the switching value conversion module, and sending the data required by simulation obtained by coding to a simulation unit; wherein the pseudo switching amount is switching amount information other than 0/1;
analog conversion module: converting the secondary side digital quantity into an analog quantity, and transmitting the analog quantity to a control device;
the switching value conversion module is used for: converting the pseudo switching value into switching value, and transmitting the switching value to a control device; converting the switching value sent by the control device into a pseudo switching value, and sending the pseudo switching value to the data encoding and decoding module;
the analog quantity conversion module is provided with a plurality of analog quantity output interfaces, the analog quantity output interfaces are externally connected with analog quantity interfaces of the control device, the switching quantity conversion module is provided with a plurality of opening interfaces and a plurality of opening interfaces, the opening interfaces are externally connected with opening interfaces of the control device, and the opening interfaces are externally connected with opening interfaces of the control device.
2. The interface data interaction device of claim 1, further comprising a protocol interface module for implementing data forwarding between the data codec module and the emulation unit.
3. An interface data interaction device according to claim 2, wherein the protocol interface module is provided with a multi-pair multi-mode optical fiber interface through which the simulation unit is externally connected.
4. An interface data interaction device according to claim 2 or 3, wherein the protocol interface module communicates with the emulation unit via an aurora protocol.
5. An interface data interaction method is characterized by comprising an uplink method and a downlink method;
the uplink method comprises the following steps:
receiving data sent by a simulation unit;
decoding the data sent by the simulation unit to obtain primary side digital quantity and pseudo switching value, and converting the primary side digital quantity into secondary side digital quantity; wherein the pseudo switching amount is switching amount information other than 0/1;
converting the secondary side digital quantity obtained by decoding into an analog quantity, and transmitting the analog quantity to a control device;
converting the pseudo switching value obtained by decoding into switching value, and transmitting the switching value to a control device;
the downlink method comprises the following steps:
receiving the switching value sent by the control device and converting the switching value into a pseudo switching value;
coding the pseudo switching value to obtain data required by simulation;
and sending the data required by the simulation to a simulation unit.
6. The method according to claim 5, wherein the data transmitted by the simulation unit is aurora protocol data.
7. The method of claim 6, wherein the data required for the simulation is aurora protocol data.
8. The method of claim 5, wherein converting the primary-side digital quantity into the secondary-side digital quantity comprises:
if the primary digital quantity is current data, the conversion process comprises:
converting the primary side digital quantity into a secondary side digital quantity according to the primary side digital quantity and a preset primary side and secondary side fixed transformation ratio;
if the primary digital quantity is voltage data, the conversion process includes:
sampling and calculating the primary side digital quantity to obtain an effective value;
determining the voltage level of the primary side digital quantity according to the effective value and the preset voltage level;
calculating the transformation ratio of the primary side and the secondary side according to the voltage grade and the rated voltage value of the secondary side;
the primary side digital quantity is converted into a secondary side digital quantity according to the primary side digital quantity and the transformation ratio of the primary side and the secondary side.
9. An interface data interaction system, which is characterized by comprising a simulation unit, an interface data interaction device and a control device according to any one of claims 1-4; the control device and the simulation unit are both connected with the interface data interaction device.
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| KR100928186B1 (en) * | 2007-11-28 | 2009-11-25 | 한국전기연구원 | Data connection arbitration device and communication system having same |
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| CN102981087B (en) * | 2012-12-11 | 2015-10-28 | 辽宁省电力有限公司电力科学研究院 | RTDS and intelligent relay protection device interface system |
| CN104569657B (en) * | 2014-12-12 | 2017-10-10 | 国家电网公司 | A kind of LTE radio communications intelligent substation mutual inductor simulating test device |
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| CN206209350U (en) * | 2016-12-01 | 2017-05-31 | 中国东方电气集团有限公司 | A kind of power electronics control device |
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