CN110535242B - SCADA-based power grid operation data transmission system - Google Patents
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Abstract
The invention discloses a power grid operation data transmission system based on SCADA (supervisory control and data acquisition), which comprises a data acquisition unit, a data conversion unit, a conversion rule base, a processor, a data interaction unit and a receiving end, wherein the data acquisition unit is used for acquiring data; the receiving end comprises a data removing unit, a microprocessor, a display and a memory; the method comprises the steps of acquiring power grid operation data to be transmitted through data, converting the power grid operation data through a data conversion unit in combination with a conversion rule base, transmitting the power grid operation data to a microprocessor at a receiving end through a data interaction unit after all the power grid operation data are converted into corresponding hidden data, and converting the hidden data into original data through a data removing unit at the receiving end to obtain transmission data; when the data removing unit removes the data, the data removing unit can only perform the data removing in a single machine local state, so that the safety of the data is ensured, and some key data required in the removing process can only be uploaded and changed locally, so that the safety of the data is ensured.
Description
Technical Field
The invention belongs to the field of data transmission, relates to power grid operation data, and particularly relates to a power grid operation data transmission system based on SCADA.
Background
And the SCADA system is a data acquisition and monitoring control system. The SCADA system is a DCS and electric power automatic monitoring system based on a computer; the method has wide application field, and can be applied to a plurality of fields such as data acquisition and monitoring control, process control and the like in the fields of electric power, metallurgy, petroleum, chemical industry, gas, railways and the like.
In the power system, the SCADA system is most widely applied, and the technical development is the most mature. It is important in telemechanical systems to monitor and control the on-site equipment to realize data acquisition, equipment control, measurement, parameter regulation, various signal alarms and other functions, i.e. the known "four remote" function, the RTU (remote terminal unit) and the FTU (feeder terminal unit) are important components. Plays a very important role in the comprehensive automation construction of the transformer substation.
Aiming at the power system, the system can realize data acquisition, but an effective transmission system is lacked for the acquired data, and the system can play a role in sending power grid operation data in an encrypted form and playing a certain data protection role; in order to realize the concept, a technical scheme is provided.
Disclosure of Invention
The invention aims to provide a power grid operation data transmission system based on SCADA.
The purpose of the invention can be realized by the following technical scheme:
a power grid operation data transmission system based on SCADA comprises a data acquisition unit, a data conversion unit, a conversion rule base, a processor, a data interaction unit and a receiving end;
the receiving end comprises a data removing unit, a microprocessor, a display and a memory;
the data acquisition unit is used for acquiring power grid operation data, and the power grid operation data is data generated in the actual operation process of a power supply network; the power grid operation data comprises a data name and a data value;
the data conversion unit is used for perfecting the conversion rule to obtain a meta hidden table and transmitting the meta hidden table to a conversion rule base for storage;
the conversion rule base receives the meta-hidden table transmitted by the data conversion unit and stores the meta-hidden table in real time;
the data conversion unit is also used for transmitting and converting the power grid operation data by combining with the conversion rule base, and the transmission and conversion comprises the following specific steps:
s10: firstly, selecting power grid operation data to be transmitted;
s20: acquiring a data name of the power grid operation data;
s30: then, converting the single character in the data name into a corresponding hidden text according to the meta hidden table;
s40: obtaining a plurality of data names consisting of the hidden texts;
s50: optionally selecting a ciphertext to obtain a specific numerical value;
s60: according to the numerical value, randomly considering the numerical value as any one parameter of the radius, the diameter and the perimeter of the circle to obtain a conversion circle; regarding the area of the conversion circle as a translation value of the numerical value;
when the numerical value is regarded as the radius of a circle, a first mark is added in front of the corresponding translation value;
when the numerical value is regarded as the diameter of a circle, a second identifier is added in front of the corresponding translation value;
when the numerical value is regarded as the circumference of a circle, a third identifier is added in front of the corresponding translation value;
the first identifier, the second identifier and the third identifier form identifiers which are all preset characters;
s70: translating all data names consisting of the hidden text into corresponding translation values to obtain translation names;
s80: acquiring a data value corresponding to the data name, and regarding the whole data value as any one parameter of the radius, the diameter and the perimeter of the circle according to the principle of the step S50 to obtain a conversion circle; regarding the area of the conversion circle as a translation data value of the data value; additional identification refers to step S50;
s90: correspondingly fusing the translation name and the translation data value to form hidden data, wherein an interval symbol exists between the translation name and the translation data value, and the translation name is arranged in front of the translation data value; the interval symbol is a preset symbol and is inconsistent with any other symbol.
Further, the process of refining the transformation rule to obtain the meta-hidden table is as follows:
the method comprises the following steps: acquiring power grid operation data, and acquiring all data names;
step two: carrying out word-by-word processing on the data name to obtain an element group, specifically:
s1: arbitrarily taking a data name;
s2: splitting the data into data names consisting of a plurality of independent words;
s3: marking corresponding individual words as elements, all words forming an element group;
s4: optionally, the name of the next data;
s5: repeating the step S2 to obtain a plurality of independent words, and marking the words as new elements;
s6: comparing the newly added elements with the element groups, filtering out repeated elements, and adding the rest elements into the element groups to form new element groups;
s7: selecting the next data name, and repeating the steps S5-S7 until all the data names are processed to obtain an element group;
step three: obtaining a group of elements and marking the group as Wi, i-1.. n;
step four: randomly selecting n characters, wherein the characters can be numbers; marking single characters as the hidden characters, forming all the characters into a hidden character group, and marking the hidden character group as Fi (1.. n);
step five: and (5) corresponding the Fi and the Wi one to form a meta-hidden table.
Furthermore, the data conversion unit is used for transmitting the hidden data to the processor, the processor is used for transmitting the hidden data to the microprocessor through the data interaction unit, and the microprocessor transmits the hidden data to the data release unit;
the data releasing unit is used for releasing the data of the hidden data by combining with a releasing rule to obtain transmission data;
the data releasing unit is used for transmitting the transmission data to the microprocessor, the microprocessor is used for transmitting the transmission data to the display for real-time display, and the microprocessor is used for stamping the transmission data and transmitting the transmission data to the memory for real-time storage.
Further, the data release specific steps are as follows:
SS 1: respectively acquiring translation names in the hidden data according to the interval symbols;
SS 2: dividing the translation names into translation values according to the identifiers;
SS 3: acquiring an identifier comparison table stored in a data release unit; the identifier comparison table is used for indicating the radius, the diameter and the perimeter of the circle corresponding to the identifier I, the identifier II and the identifier III respectively;
SS 4: converting the identifier into an original numerical value according to the identifier and the translation value, wherein if the identifier corresponds to the radius of the circle, the original numerical value is obtained, the radius of the original numerical value can be obtained through the translation value, and the original numerical value can be obtained according to an area relation formula of the radius and the circle; the same principle can be adopted for other identifiers;
SS 5: converting all the translation values into original values, wherein the original values are corresponding hidden texts, and obtaining translation names formed by a plurality of original values;
SS 6: converting the original numerical value into an original data name consisting of a plurality of elements according to the original numerical value contrast meta-hidden table;
SS 7: acquiring a translation data value in the hidden data, and retranslating the translation data value into a data value corresponding to the data name according to the principle of the step SS 4;
SS 8: and fusing the data name and the data value to form transmission data.
Furthermore, the meta hidden table of the data removing unit can only be transmitted to the data removing unit in a local uploading mode, and the data removing process of the data removing unit is carried out in a single machine state, and the data can be re-networked after the removal is finished.
Further, the identifier comparison table can only be transmitted to the data removing unit in a local uploading mode, and the data removing unit can store the new identifier comparison table in place of the original identifier comparison table when receiving the new identifier comparison table.
The invention has the beneficial effects that:
the method comprises the steps of acquiring power grid operation data to be transmitted through data, converting the power grid operation data through a data conversion unit in combination with a conversion rule base, transmitting the power grid operation data to a microprocessor at a receiving end through a data interaction unit after all the power grid operation data are converted into corresponding hidden data, and converting the hidden data into original data through a data removing unit at the receiving end to obtain transmission data; when the data removing unit removes the data, the data removing unit can only perform the data removing in a single machine local state, so that the safety of the data is ensured, and some key data required to be used in the removing process can only be uploaded and changed locally, so that the safety of the data is ensured; the invention is simple and effective and easy to use.
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In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a block diagram of the system of the present invention.
Detailed Description
As shown in fig. 1, a SCADA-based power grid operation data transmission system includes a data acquisition unit, a data conversion unit, a conversion rule base, a processor, a data interaction unit, and a receiving end;
the receiving end comprises a data removing unit, a microprocessor, a display and a memory; the data acquisition unit acquires power grid operation data by means of a preposed acquisition subsystem in the SCADA system, wherein the power grid operation data is data generated by a power supply network in the actual operation process and specifically comprises real-time data of the power grid, power grid parameter data, power generation and load data, historical data, analysis and calculation data and the like; the power grid operation data comprises a data name and a data value;
the data acquisition unit is used for transmitting power grid operation data to the data conversion unit, the data conversion unit is used for receiving the power grid operation data transmitted by the data acquisition unit, the data conversion unit is used for perfecting a conversion rule, and the concrete perfecting process is as follows:
the method comprises the following steps: acquiring power grid operation data, and acquiring all data names;
step two: carrying out word-by-word processing on the data name to obtain an element group, specifically:
s1: arbitrarily taking a data name;
s2: splitting the data into data names consisting of a plurality of independent words;
s3: marking corresponding individual words as elements, all words forming an element group;
s4: optionally, the name of the next data;
s5: repeating the step S2 to obtain a plurality of independent words, and marking the words as new elements;
s6: comparing the newly added elements with the element groups, filtering out repeated elements, and adding the rest elements into the element groups to form new element groups;
s7: selecting the next data name, and repeating the steps S5-S7 until all the data names are processed to obtain an element group;
step three: obtaining a group of elements and marking the group as Wi, i-1.. n;
step four: randomly selecting n characters, wherein the characters can be numbers; marking single characters as the hidden characters, forming all the characters into a hidden character group, and marking the hidden character group as Fi (1.. n);
step five: the Fi and the Wi are in one-to-one correspondence to form a meta-hidden table;
step six: transmitting the meta-hidden table to a conversion rule base for storage;
the conversion rule base receives the meta-hidden table transmitted by the data conversion unit and stores the meta-hidden table in real time;
the data conversion unit is also used for transmitting and converting the power grid operation data by combining with the conversion rule base, and the transmission and conversion comprises the following specific steps:
s10: firstly, selecting power grid operation data to be transmitted;
s20: acquiring a data name of the power grid operation data;
s30: then, converting the single character in the data name into a corresponding hidden text according to the meta hidden table;
s40: obtaining a plurality of data names consisting of the hidden texts;
s50: optionally selecting a ciphertext to obtain a specific numerical value;
s60: according to the numerical value, randomly considering the numerical value as any one parameter of the radius, the diameter and the perimeter of the circle to obtain a conversion circle; regarding the area of the conversion circle as a translation value of the numerical value;
when the numerical value is regarded as the radius of a circle, a first mark is added in front of the corresponding translation value;
when the numerical value is regarded as the diameter of a circle, a second identifier is added in front of the corresponding translation value;
when the numerical value is regarded as the circumference of a circle, a third identifier is added in front of the corresponding translation value;
the first identifier, the second identifier and the third identifier form identifiers which are all preset characters;
s70: translating all data names consisting of the hidden text into corresponding translation values to obtain translation names;
s80: acquiring a data value corresponding to the data name, and regarding the whole data value as any one parameter of the radius, the diameter and the perimeter of the circle according to the principle of the step S50 to obtain a conversion circle; regarding the area of the conversion circle as a translation data value of the data value; additional identification refers to step S50;
s90: correspondingly fusing the translation name and the translation data value to form hidden data, wherein an interval symbol exists between the translation name and the translation data value, and the translation name is arranged in front of the translation data value; the interval symbol is a preset symbol and is inconsistent with any other symbol;
the data conversion unit is used for transmitting the hidden data to the processor, the processor is used for transmitting the hidden data to the microprocessor through the data interaction unit, and the microprocessor transmits the hidden data to the data release unit;
the data release unit is used for releasing the data of the hidden data by combining with a release rule, and the specific steps of the data release are as follows:
SS 1: respectively acquiring translation names in the hidden data according to the interval symbols;
SS 2: dividing the translation names into translation values according to the identifiers;
SS 3: acquiring an identifier comparison table stored in a data release unit; the identifier comparison table is used for indicating the radius, the diameter and the perimeter of the circle corresponding to the identifier I, the identifier II and the identifier III respectively;
SS 4: converting the identifier into an original numerical value according to the identifier and the translation value, wherein if the identifier corresponds to the radius of the circle, the original numerical value is obtained, the radius of the original numerical value can be obtained through the translation value, and the original numerical value can be obtained according to an area relation formula of the radius and the circle; the same principle can be adopted for other identifiers;
SS 5: converting all the translation values into original values, wherein the original values are corresponding hidden texts, and obtaining translation names formed by a plurality of original values;
SS 6: converting the original numerical value into an original data name consisting of a plurality of elements according to the original numerical value contrast meta-hidden table;
SS 7: acquiring a translation data value in the hidden data, and retranslating the translation data value into a data value corresponding to the data name according to the principle of the step SS 4;
SS 8: fusing the data name and the data value to form transmission data;
the data releasing unit is used for transmitting the transmission data to the microprocessor, the microprocessor is used for transmitting the transmission data to the display for real-time display, and the microprocessor is used for stamping the transmission data and transmitting the transmission data to the memory for real-time storage.
The meta hidden list of the data removing unit can be transmitted to the data removing unit only in a local uploading mode, the data removing process of the data removing unit is carried out in a single machine state, and the data can be re-networked after the data removing is finished.
The identifier comparison table can be transmitted to the data removing unit only in a local uploading mode, and the data removing unit can store the new identifier comparison table instead of the original identifier comparison table when receiving the new identifier comparison table.
A power grid operation data transmission system based on SCADA (supervisory control and data acquisition), during operation, firstly obtains power grid operation data to be transmitted through data, then converts the power grid operation data through a data conversion unit in combination with a conversion rule base, transmits the power grid operation data to a microprocessor at a receiving end through a data interaction unit after all the power grid operation data are converted into corresponding hidden data, and converts the hidden data into original data through a data release unit at the receiving end to obtain transmission data; when the data removing unit removes the data, the data removing unit can only perform the data removing in a single machine local state, so that the safety of the data is ensured, and some key data required to be used in the removing process can only be uploaded and changed locally, so that the safety of the data is ensured; the invention is simple and effective and easy to use.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (6)
1. A power grid operation data transmission system based on SCADA is characterized by comprising a data acquisition unit, a data conversion unit, a conversion rule base, a processor, a data interaction unit and a receiving end;
the receiving end comprises a data removing unit, a microprocessor, a display and a memory;
the data acquisition unit is used for acquiring power grid operation data, and the power grid operation data is data generated in the actual operation process of a power supply network; the power grid operation data comprises a data name and a data value;
the data conversion unit is used for perfecting the conversion rule to obtain a meta hidden table and transmitting the meta hidden table to a conversion rule base for storage;
the conversion rule base receives the meta-hidden table transmitted by the data conversion unit and stores the meta-hidden table in real time;
the data conversion unit is also used for transmitting and converting the power grid operation data by combining with the conversion rule base, and the transmission and conversion comprises the following specific steps:
s10: firstly, selecting power grid operation data to be transmitted;
s20: acquiring a data name of the power grid operation data;
s30: then, converting the single character in the data name into a corresponding hidden text according to the meta hidden table;
s40: obtaining a plurality of data names consisting of the hidden texts;
s50: optionally selecting a ciphertext to obtain a specific numerical value;
s60: according to the numerical value, randomly considering the numerical value as any one parameter of the radius, the diameter and the perimeter of the circle to obtain a conversion circle; regarding the area of the conversion circle as a translation value of the numerical value;
when the numerical value is regarded as the radius of a circle, a first mark is added in front of the corresponding translation value;
when the numerical value is regarded as the diameter of a circle, a second identifier is added in front of the corresponding translation value;
when the numerical value is regarded as the circumference of a circle, a third identifier is added in front of the corresponding translation value;
the first identifier, the second identifier and the third identifier form identifiers which are all preset characters;
s70: translating all data names consisting of the hidden text into corresponding translation values to obtain translation names;
s80: acquiring a data value corresponding to the data name, and regarding the whole data value as any one parameter of the radius, the diameter and the perimeter of the circle according to the principle of the step S50 to obtain a conversion circle; regarding the area of the conversion circle as a translation data value of the data value; additional identification refers to step S50;
s90: correspondingly fusing the translation name and the translation data value to form hidden data, wherein an interval symbol exists between the translation name and the translation data value, and the translation name is arranged in front of the translation data value; the interval symbol is a preset symbol and is inconsistent with any other symbol.
2. A SCADA-based power grid operation data transmission system according to claim 1, characterized in that the process of perfecting the conversion rules to obtain meta-hidden tables is as follows:
the method comprises the following steps: acquiring power grid operation data, and acquiring all data names;
step two: carrying out word-by-word processing on the data name to obtain an element group, specifically:
s1: arbitrarily taking a data name;
s2: splitting the data into data names consisting of a plurality of independent words;
s3: marking corresponding individual words as elements, all words forming an element group;
s4: optionally, the name of the next data;
s5: repeating the step S2 to obtain a plurality of independent words, and marking the words as new elements;
s6: comparing the newly added elements with the element groups, filtering out repeated elements, and adding the rest elements into the element groups to form new element groups;
s7: selecting the next data name, and repeating the steps S5-S7 until all the data names are processed to obtain an element group;
step three: obtaining a group of elements and marking the group as Wi, i-1.. n;
step four: randomly selecting n characters, wherein the characters are numbers; marking single characters as the hidden characters, forming all the characters into a hidden character group, and marking the hidden character group as Fi (1.. n);
step five: and (5) corresponding the Fi and the Wi one to form a meta-hidden table.
3. A SCADA-based power grid operation data transmission system according to claim 1, wherein the data conversion unit is used for transmitting the hidden data to the processor, the processor is used for transmitting the hidden data to the microprocessor through the data interaction unit, and the microprocessor transmits the hidden data to the data release unit;
the data releasing unit is used for releasing the data of the hidden data by combining with a releasing rule to obtain transmission data;
the data releasing unit is used for transmitting the transmission data to the microprocessor, the microprocessor is used for transmitting the transmission data to the display for real-time display, and the microprocessor is used for stamping the transmission data and transmitting the transmission data to the memory for real-time storage.
4. A SCADA-based grid operation data transmission system according to claim 3, characterized in that the data release specific steps are as follows:
SS 1: respectively acquiring translation names in the hidden data according to the interval symbols;
SS 2: dividing the translation names into translation values according to the identifiers;
SS 3: acquiring an identifier comparison table stored in a data release unit; the identifier comparison table is used for indicating the radius, the diameter and the perimeter of the circle corresponding to the identifier I, the identifier II and the identifier III respectively;
SS 4: converting the identifier into an original numerical value according to the identifier and the translation value, wherein if the identifier corresponds to the radius of a circle, the original numerical value is obtained, the radius of the original numerical value is obtained through the translation value, and the original numerical value can be obtained according to an area relation formula of the radius and the circle; solving other identifiers by adopting the same principle;
SS 5: converting all the translation values into original values, wherein the original values are corresponding hidden texts, and obtaining translation names formed by a plurality of original values;
SS 6: converting the original numerical value into an original data name consisting of a plurality of elements according to the original numerical value contrast meta-hidden table;
SS 7: acquiring a translation data value in the hidden data, and retranslating the translation data value into a data value corresponding to the data name according to the principle of the step SS 4;
SS 8: and fusing the data name and the data value to form transmission data.
5. A SCADA-based power grid operation data transmission system as claimed in claim 3, wherein the meta-hidden tables of the data removing unit can only be transmitted to the data removing unit by a local uploading mode, and the data removing process of the data removing unit is performed in a stand-alone state, and the data is re-networked after the removal is completed.
6. A SCADA-based grid operation data transmission system according to claim 4, characterized in that the identifier comparison table can only be transmitted to the data release unit by means of local upload, and the data release unit stores the new identifier comparison table in place of the original identifier comparison table when receiving the new identifier comparison table.
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