CN112769238B - Automatic point-to-point acceptance checking method for front multichannel interface of power dispatching system - Google Patents
Automatic point-to-point acceptance checking method for front multichannel interface of power dispatching system Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention discloses an automatic point-to-point acceptance method for a front multichannel interface of a power dispatching system, which comprises the following steps: screenshot is carried out on a front multichannel interface of the power dispatching system; preprocessing the front multichannel screenshot, cutting and extracting a right window image mainly displaying a point signal in the front multichannel interface screenshot; dividing the pre-processed image of the front multichannel interface by adopting a form analysis algorithm, and identifying the divided front multichannel interface image by using tesseract character identification; checking whether a character recognition result exists and a point number to be detected or not, and ensuring that the point signal to be detected is displayed in a front multichannel interface; and checking signal information with the same point number as the point signal to be pointed in the character recognition result of each channel of the front multichannel interface image. The automatic checking and accepting method of the front-mounted multi-channel interface alarm window can reduce the burden of workers, improve the checking and accepting work efficiency and improve the correctness of the association of the points and the pictures.
Description
Technical Field
The invention belongs to the technical field of automatic point-to-point acceptance of a front multichannel interface of a power dispatching system, and particularly relates to an automatic point-to-point acceptance method of the front multichannel interface of the power dispatching system.
Background
With the continuous popularization of unattended substations, whether each stage of dispatching center can accurately monitor the managed substations in real time is a premise of safe and stable operation of a power grid, and remote transmission area point table information of a dispatching master station and a station end needs to be checked. The signal point-to-point and acceptance of the main station side of the power dispatching system are basically verified by adopting manual verification of signal information in a real-time preposed multichannel picture of the main dispatching station system. The mode brings great workload to dispatching staff, has low efficiency, is easy to generate omission and has hidden trouble for safe burying of the power grid.
The signal information in the front multichannel interface is displayed in a table form, and only the signal information of remote signaling, remote sensing or remote pulse type can be displayed singly. The point signal information in the front multichannel picture is displayed in multiple tracks (corresponding to multiple columns of the table), and the point is correctly calculated only when the point is correctly checked. And signals in the front-end multi-channel interface are sometimes not displayed in the current interface, a slider bar for scrolling through the window is required to find the signal that needs to be point-to-point. These present difficulties in identifying signal information in a front-end multi-channel interface using text-to-image recognition techniques.
Therefore, a more intelligent, efficient and safer scheduling side front-end multichannel interface point checking and accepting method needs to be researched, the burden of workers is reduced, the point checking and accepting work efficiency is improved, and the accuracy of point and picture association is improved.
Disclosure of Invention
The invention aims to solve the technical problems that: the utility model provides a power dispatching system front-end multichannel interface automatic point checking and accepting method, which solves the problems existing in the prior art.
The technical scheme adopted by the invention is as follows: a method for automatically checking and accepting a front multichannel interface of a power dispatching system comprises the following steps:
step 1, screenshot is carried out on a front multichannel interface of a power dispatching system;
step 2, preprocessing the front multichannel screenshot, cutting and extracting a right window image mainly displaying a point signal in the front multichannel interface screenshot;
step 3, dividing the pre-processed image of the front-end multi-channel interface by adopting a table analysis algorithm, and identifying the divided front-end multi-channel interface image by using tesseract character identification, wherein character information of each row of signals in the front-end multi-channel interface image is identified, and the character information comprises signal names, channel/point numbers and signal values;
step 4, inquiring whether the information with the same point number as the point signal to be point exists in the image character recognition result of the front multichannel interface, and if the information with the same point number does not exist, comparing the point number of the point signal to be point with the maximum point number and the minimum point number in the image recognition result of the front multichannel interface: a) The minimum point number in the image recognition result is less than or equal to the point number of the signal to be detected and less than or equal to the maximum point number in the image recognition result, the signal to be detected is not received in the front multichannel interface, the point to be detected fails, and the point to be detected of the next detecting point starts to work; b) The point number of the point signal to be point-to-point is smaller than the minimum point number in the image recognition result, the point number of the point signal to be point-to-point is not displayed in the front-end multi-channel interface, the difference value between the point number of the point signal to be point-to-point and the minimum point number in the image recognition result is calculated, the front-end multi-channel interface point table display window is rolled by a difference value distance, the point signal to be point-to-point is displayed in the front-end multi-channel interface, and the step 3 is skipped; c) The point number of the point signal to be point is larger than the maximum point number in the image recognition result, the point number of the point signal to be point is not displayed in the front-end multi-channel interface, the difference value between the point number of the point signal to be point and the maximum point number in the image recognition result is calculated, the front-end multi-channel interface point table display window is rolled by a difference value distance, the point signal to be point is displayed in the front-end multi-channel interface, and the step 3 is skipped;
step 5, checking whether other information (signal name and signal value) in the image result is the same as the signal to be point-pointed or not in the signal information which is the same as the signal to be point-pointed in the image character recognition result of the front multichannel interface: if the identification result is the same as the information of the signal to be point-to-point, the signal is point-to-point correct; if the identification result is different from the signal to be point-to-point, the signal point-to-point fails.
The point-to-point signal is sent by the station end, and sent sequentially and periodically according to the point numbers of the point table, and the front-end multi-channel interface automatically performs point-to-point acceptance according to the point numbers of the table to be tested.
The screenshot of the alarm window in the step 1 is realized through simulating a keyboard and mouse, and the operation of the keyboard and mouse is automatically controlled to realize the screenshot of the alarm window.
The front-end multi-channel interface can only display the signal information of remote signaling, remote sensing or remote pulse, and a remote signaling, remote sensing or remote pulse tab paging button coordinate module needs to be arranged, so that the mouse click is automatically controlled to switch the remote signaling, remote sensing or remote pulse page in the front-end multi-channel interface automatic point checking and accepting process.
The signal information of the front multichannel interface checking and accepting check is a signal name, a signal point number and a signal value, and the signal name and the signal point number of the front multichannel signal are obtained from the power transformation station table information known by the dispatching system; the signal values of the front-end multichannel signal are divided into remote signaling values and remote sensing values, wherein the remote signaling values are text descriptions, the remote sensing values are specific (whether fixed or set) variable values can be changed, in the process of checking the signal values of the front-end multichannel signal, the remote signaling descriptions are required to be configured into 'split' and 'close', and the maximum allowable error percentage value of the remote sensing values is set.
Setting the number of lines to scroll up and down each time, and when the signal display needs to scroll up and down in step 4, the number of lines to be scrolled = the difference between the point number of the point signal to be scrolled and the maximum or minimum point number in image recognition/the number of lines to scroll up and down each time.
The signal to be point-to-point in the front-end multi-channel interface is displayed in the multi-channel list, the front-end multi-channel interface automatic point-to-point method checks the point-to-point signal information in each channel, and if the information displayed in any channel is different from the signal to be point-to-point, the signal is considered to be point-to-point error.
The invention has the beneficial effects that: compared with the prior art, the invention has the following effects:
1) The invention adopts the character recognition technology to recognize the point-to-point signal information in the front multichannel, thereby saving the manpower consumption of manpower to people, greatly improving the working efficiency, reducing the cost and avoiding the problem that the manual point-to-point mode is easy to make mistakes.
2) The method and the device firstly identify the form transverse lines in the front multichannel interface, and then identify the text information of the cells in the image, so that the identification speed of the signal information in the front multichannel interface is increased, and the identification efficiency is improved;
3) The automatic point-to-point method of the front multichannel interface and the point-to-point signal of the station end are synchronously carried out, and the key mouse simulation technology is adopted, so that the key mouse can be automatically controlled to carry out screenshot of the front multichannel interface and switching of remote signaling, remote measuring and remote pulse paging, the whole-range point-to-point acceptance work is automatically carried out, and the manpower is greatly saved;
4) The invention is a point-to-point acceptance method of the dispatching master station end, and verifies the correctness of the whole signal channel from the substation protection device signal to the remote machine and then to the dispatching master station. The method only acquires the screenshot of the front multichannel interface, does not interact with interfaces such as communication and the like of a dispatching system, and does not have hidden troubles such as data network security and the like.
Drawings
Fig. 1 is a schematic flow chart of the present invention.
Fig. 2 is a screenshot of a point to test table file xls.
Fig. 3 is a front window parameter configuration screenshot.
Fig. 4 is a front-end multichannel interface screenshot.
Detailed Description
The invention will be further described with reference to specific drawings and examples.
Example 1: as shown in fig. 1-4, an automatic point-to-point acceptance method for a front multichannel interface of a power dispatching system comprises the following steps:
step 1, screenshot is carried out on a front multichannel interface of a power dispatching system;
step 2, preprocessing the front multichannel screenshot, cutting and extracting a right window image mainly displaying a point signal in the front multichannel interface screenshot;
step 3, dividing the pre-processed image of the front-end multi-channel interface by adopting a table analysis algorithm, and identifying the divided front-end multi-channel interface image by using tesseract character identification to identify character information of each row of signals in the front-end multi-channel interface image, wherein the character information comprises signal names, channel/point numbers and signal values;
and step 4, inquiring whether information with the same point number as the point signal to be point exists in the front multichannel interface image character recognition result. If the information of the same point number does not exist, comparing the point number of the point signal to be detected with the maximum point number and the minimum point number in the front multichannel interface image identification result: a) The minimum point number in the image recognition result is less than or equal to the point number of the signal to be detected, less than or equal to the maximum point number in the image recognition result, the signal to be detected is not received in the front multichannel interface, the point to be detected fails, and the point to be detected of the next detecting point starts to work. B) And if the point number of the point signal is smaller than the minimum point number in the image recognition result, the point number of the point signal is not displayed in the front-end multi-channel interface, the difference value between the point number of the point signal and the minimum point number in the image recognition result is required to be calculated, the front-end multi-channel interface point table display window is rolled by a difference value distance, and the point signal to be point signal is displayed in the front-end multi-channel interface and jumps to the step 3. C) The point number of the point signal to be point is larger than the maximum point number in the image recognition result, the point number of the point signal to be point is not displayed in the front-end multi-channel interface, the difference value between the point number of the point signal to be point and the maximum point number in the image recognition result is calculated, the front-end multi-channel interface point table display window is rolled by a difference value distance, the point signal to be point is displayed in the front-end multi-channel interface, and the step 3 is skipped; the prior art adopts the station side to point or the manual master station side to point, and does not have the technology of identifying the front multichannel pictures. The method adopts a character recognition technology to recognize the point-to-point signal information in the front multichannel picture. But the point-to-point signals in the front-end multi-channel are displayed in tabular form, requiring scrolling of the slider bar to display the point-to-point signal in the current window. In addition, the point signal information in the front multichannel picture is displayed in multiple tracks (corresponding to multiple columns of the table), and the point is correctly calculated only when the point is correctly checked;
step 5, checking whether other information (signal name and signal value) in the image result is the same as the signal to be point-pointed or not in the signal information which is the same as the signal to be point-pointed in the image character recognition result of the front multichannel interface: if the identification result is the same as the information of the signal to be point-to-point, the signal is point-to-point correct; if the identification result is different from the signal to be point-to-point, the signal point-to-point fails.
When the method is used, the file xls of the point table to be measured is firstly imported, as shown in fig. 2, and the signal name, the signal point number and the point table sequence of the point table to be measured are obtained. The pre-multichannel interface telemetry value description and telemetry value error maximum allowable value are then configured as shown in fig. 3. The signal values of the front multichannel signal are divided into remote signaling values and remote measuring values, wherein the remote signaling values are text descriptions, and the remote measuring values are specific variable values. In the checking process of signal values of the front-end multichannel signals, the remote signaling description is required to be configured into 'split' and 'combined', and the maximum allowable error percentage value of the remote sensing value is set. Then configuring remote signaling, telemetry or remote tab paging button coordinates. The prior art has the following problems: the front multichannel interface can only display the signal information of remote signaling, remote sensing or remote pulse, and the solution method is that: the remote signaling, remote sensing or remote pulse tab paging button coordinate module is required to be arranged, and in the automatic point-to-point checking and accepting process of the front-end multi-channel interface, the mouse is automatically controlled to click and switch the remote signaling, remote sensing or remote pulse page. The invention refers to the existing manual point-to-point requirement, extracts the information to be checked in the point-to-point process, and sets forth and standardizes which measuring point information the front multichannel interface needs to check; meanwhile, the remote signaling value is set as the text description, so that the text recognition result of the remote signaling can be conveniently checked; the maximum allowable error percentage value of the telemetry value is set, and because the telemetry value in the front multichannel interface is a measured value, the telemetry value is in error with the set value of the measuring point.
When the point checking and accepting test is carried out, the point signals are sent out by the station end according to the point table to be tested in sequence in a fixed period, and compared with the point signal sending out by the station end, the automatic point checking and accepting method of the front multichannel interface has 2 seconds delay, and the delay function is to ensure that the actual remote up-sending signal data of the station end is correctly sent to the dispatching master station system. The fixed time interval for checking the primary measuring point by the front-end multichannel interface automatic checking and accepting method is 5s, and the fixed time interval is the same as the point signal sending interval of the station end. The point list order checked by the front-end multi-channel interface automatic point checking and accepting method is the same as the point list order sent by the station end. The prior art means adopts a point tester device to test the point of a telecontrol device and a protection measurement and control device at the side of a transformer substation, and has the following problems: only the point-to-point signal at the transformer station side is checked, and the point-to-point signal in the dispatching system at the master station side is not checked, so that the point-to-point communication link is incomplete. The method adopts the steps of identifying the point-to-point signals in the front multichannel interface, carrying out at a dispatching master station, sequentially sending out the point-to-point signals at a transformer station side, sequentially checking the point-to-point signals in the front multichannel interface in a dispatching system at the master station side, and synchronizing the progress while sending out the signals and checking the signals. The method has the advantages that: the link integrity of the point signal is checked, and the link integrity checking system comprises a station side telecontrol device and a master station side dispatching system.
The invention relates to a power dispatching system, which is characterized in that signal information mainly checked by front multichannel interface point checking and accepting is signal names, signal point numbers and signal values.
When the alarm window automatic point checking and accepting method starts to recognize the point signals in the alarm window, the screenshot of the alarm window is realized through simulating a keyboard and mouse, and the operation of the keyboard and mouse is automatically controlled to realize the screenshot of the alarm window, as shown in figure 4. And preprocessing the front multichannel screenshot, and cutting and extracting a right window image mainly displaying the point signal in the front multichannel interface screenshot. Then a table analysis algorithm is adopted to segment the pre-processing image of the front-end multi-channel interface, and text recognition is used to recognize the segmented front-end multi-channel interface image, so that text information of each row of signals in the front-end multi-channel interface image, including signal names, channel/point numbers and signal values, is recognized. Inquiring whether information with the same point number as the signal to be point-to-point exists in the front multichannel interface image character recognition result. If the information of the same point number does not exist, comparing the point number of the point signal to be detected with the maximum point number and the minimum point number in the front multichannel interface image identification result: a) The minimum point number in the image recognition result is less than or equal to the point number of the signal to be detected, less than or equal to the maximum point number in the image recognition result, the signal to be detected is not received in the front multichannel interface, the point to be detected fails, and the point to be detected of the next detecting point starts to work. B) And if the point number of the point signal is smaller than the minimum point number in the image recognition result, the point number of the point signal is not displayed in the front-end multi-channel interface, the difference value between the point number of the point signal and the minimum point number in the image recognition result is calculated, the front-end multi-channel interface point table display window is rolled by a difference value distance, the point signal to be point signal is displayed in the front-end multi-channel interface, and screenshot recognition is carried out on the front-end multi-channel interface again. C) And if the point number of the point signal to be point is larger than the maximum point number in the image recognition result, the point number of the point signal to be point is not displayed in the front-end multi-channel interface, the difference value between the point number of the point signal to be point and the maximum point number in the image recognition result is calculated, the front-end multi-channel interface point table display window is rolled by a difference value distance, the point signal to be point is displayed in the front-end multi-channel interface, and screenshot recognition is carried out on the front-end multi-channel interface again. In the existing method, the point signals in the front-end multi-channel interface are not checked, and the manual checking mode is referred to, so that the method adopts an analog keyboard and mouse to realize automatic screenshot of the front-end multi-channel interface, and labor is saved. The screenshot is named regularly, so that the image file is conveniently called in a regular format when the image is identified, and the front-end multichannel interface screenshot file can be quickly searched according to the point number when the point is wrong.
Finally, checking whether other information (signal name and signal value) in the image result is the same as the signal to be point-pointed or not in the character recognition result of each channel of the front multichannel interface image, wherein the signal information has the same point number as the signal to be point-pointed or not: if the identification result of each channel is the same as the information of the signal to be point-to-point, the signal is point-to-point correct; if any channel identification result is different from the signal to be point-pointed, the signal point-point fails.
The table analysis algorithm is: and identifying the transverse lines of the table in the pre-processed front multichannel image by adopting opencv, namely dividing the transverse lines of the records (each row), and identifying the vertical lines of the table in the image, namely dividing lines of each column, so as to find the cells where the data in the image are located. And then, recognizing character information of the cells in the image by using the pyress, wherein the character information comprises signal names, channel/point numbers and signal values.
The foregoing is merely illustrative of the present invention, and the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the scope of the present invention, and therefore, the scope of the present invention shall be defined by the scope of the appended claims.
Claims (6)
1. A method for automatically checking and accepting a front multichannel interface of a power dispatching system is characterized in that: the method comprises the following steps:
step 1, screenshot is carried out on a front multichannel interface of a power dispatching system;
step 2, preprocessing the front multichannel screenshot, cutting out redundant tool bars and tree-shaped catalogues, and extracting a right window image for displaying a point signal in the front multichannel screenshot;
step 3, dividing the pre-processed image of the front-end multi-channel interface by adopting a table analysis algorithm, and identifying the divided front-end multi-channel interface image by using tesseract character identification, wherein character information of each row of signals in the front-end multi-channel interface image is identified, and the character information comprises signal names, channel/point numbers and signal values;
step 4, inquiring whether the information with the same point number as the point signal exists in the front-end multi-channel interface image character recognition result, and if the information with the same point number does not exist, comparing the point number of the point signal with the maximum point number and the minimum point number in the front-end multi-channel interface image character recognition result: a) The minimum point number in the image character recognition result is less than or equal to the point number of the signal to be point-pointed is less than or equal to the maximum point number in the image character recognition result, if the point-pointed signal is not received in the front multichannel interface, the point-pointed failure is caused, and the point-pointed work of the next measuring point is started; b) The point number of the point signal to be point-to-point is smaller than the minimum point number in the image character recognition result, the point number of the point signal to be point-to-point is not displayed in the front-end multi-channel interface, the difference value between the point number of the point signal to be point-to-point and the minimum point number in the image character recognition result is calculated, the front-end multi-channel interface point table display window is rolled by a difference value distance, the point signal to be point-to-point is displayed in the front-end multi-channel interface, and the step 1 is skipped; c) The point number of the point signal to be point is larger than the maximum point number in the image character recognition result, the point number of the point signal to be point is not displayed in the front-end multi-channel interface, the difference between the point number of the point signal to be point and the maximum point number in the image character recognition result is calculated, the front-end multi-channel interface point table display window is rolled by a difference distance, the point signal to be point is displayed in the front-end multi-channel interface, and the step 1 is skipped;
step 5, checking whether signal information with the same point number as the signal to be point-pointed in the image character recognition result of the front multichannel interface is the same as the signal to be point-pointed or not: if the image character recognition result is the same as the signal to be subjected to point-to-point, the signal is correct in point-to-point; if the image character recognition result is different from the signal to be point-pointed, the signal fails point-to-point; the method comprises the steps that a point-to-point signal is sent out by a station end, and is sent out sequentially and periodically according to the point numbers of a point table, and a front-end multi-channel interface automatic point-to-point acceptance method sequentially carries out point-to-point acceptance according to the point numbers of the table to be tested;
setting a remote signaling, remote sensing or remote pulse tab paging button coordinate module, and automatically controlling a mouse to click and switch a remote signaling, remote sensing or remote pulse page in the automatic point-to-point checking and accepting process of a front multichannel interface;
the front-end multichannel interface automatic point checking and accepting method has 2 seconds delay compared with the point signal sending of the station end.
2. The automatic point checking and accepting method for a front-end multichannel interface of a power dispatching system according to claim 1, wherein the method comprises the following steps: the screenshot of the alarm window in the step 1 is realized through simulating a keyboard and mouse, and the operation of the keyboard and mouse is automatically controlled to realize the screenshot of the alarm window.
3. The automatic point checking and accepting method for a front-end multichannel interface of a power dispatching system according to claim 1, wherein the method comprises the following steps: the signal information of the front multichannel interface checking and accepting check is a signal name, a signal point number and a signal value, and the signal name and the signal point number of the front multichannel signal are obtained from the power transformation station table information known by the dispatching system; the signal values of the front-end multi-channel signal are divided into remote signaling values and remote sensing values, wherein the remote signaling values are text descriptions, the remote sensing values are variable values set during testing, the description of the remote signaling values is required to be configured as 'division' and 'combination' in the process of checking the signal values of the front-end multi-channel signal, and the error percentage maximum allowable value of the remote sensing values is set.
4. The automatic point checking and accepting method for a front-end multichannel interface of a power dispatching system according to claim 1, wherein the method comprises the following steps: setting the number of lines to be scrolled up and down each time, and when the signal display needs to be scrolled up and down in the step 4, the number of times to be scrolled = the difference between the point number of the point signal to be scrolled up and down and the maximum or minimum point number in the image character recognition result/the number of lines to be scrolled up and down each time.
5. The automatic point checking and accepting method for a front-end multichannel interface of a power dispatching system according to claim 1, wherein the method comprises the following steps: the signal to be point-to-point in the front-end multi-channel interface is displayed in the multi-channel list, the front-end multi-channel interface automatic point-to-point method checks the point-to-point signal information in each channel, and if the information displayed in any channel is different from the signal to be point-to-point, the signal is considered to be point-to-point error.
6. The automatic point checking and accepting method for a front-end multichannel interface of a power dispatching system according to claim 1, wherein the method comprises the following steps: the table analysis algorithm is: identifying the transverse lines of the table in the pre-processed front multichannel image by adopting opencv, namely dividing the recorded transverse lines, identifying the vertical lines of the table in the image, namely dividing lines of each column, finding the cells where the data in the image are located,
and then, recognizing character information of the cells in the image by using the pyress, wherein the character information comprises signal names, channel/point numbers and signal values.
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