Substation protection pressure plate switching process state test system
By analyzing the differences in the activation and deactivation trajectories of protection pressure plates and identifying multi-dimensional states, the problem of inaccurate operation of substation protection pressure plates was solved, enabling quantitative assessment and timely handling, thus ensuring the safe and stable operation of the power system.
Patent Information
- Application Number
- CN202510957395.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-11
- Publication Date
- 2025-10-31
AI Technical Summary
Existing technologies are insufficient to accurately analyze the standardization of the operation of substation protection circuit breakers, leading to misjudgments and omissions. Furthermore, the identification accuracy is low, the adaptability is poor, and there are potential safety hazards.
By judging the operational compliance by the difference in the commissioning and decommissioning trajectory of the protection pressure plate, and combining pressure and image analysis, the commissioning and decommissioning status is divided from multiple dimensions, providing feedback information to guide maintenance personnel in inspection and handling.
It improves the reliability of protection pressure plate operation, detects abnormalities in a timely manner, ensures the consistency and effectiveness of the activation and deactivation status, reduces human error, and enhances the safety and stability of the power system.
Smart Images
Figure CN120879930A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of substation self-maintenance and condition monitoring technology, and in particular to a substation protection pressure plate activation and deactivation condition testing system. Background Technology
[0002] In the daily operation and maintenance of substations and the protection of power systems, the protection switch is a key "switch" connecting the relay protection device and the external circuit. The accuracy of its activation and deactivation operations directly determines whether the protection function can be performed normally, and it is one of the core links to ensure the safe and stable operation of the power system. In substation operation, the correct activation and deactivation of protection circuit boards is a key link to ensure the safe and stable operation of the power system. However, traditional protection circuit board status monitoring mainly relies on manual inspection. This method is not only inefficient, but also easily affected by human factors, leading to misjudgments, omissions and other situations. With the continuous improvement of the intelligence level of substations, intelligent monitoring systems have become a research hotspot. However, in the existing technology, it is difficult to accurately analyze the standardization of the operation of protection pressure plates, which makes it difficult to deal with abnormalities in the operation of protection pressure plates in a timely manner, posing safety hazards to the power system. At the same time, it is difficult to analyze the consistency of the operation of protection pressure plates, which leads to potential safety risks of protection pressure plates. In addition, problems such as low identification accuracy and poor adaptability make it difficult to meet the actual engineering needs. To address the aforementioned technical shortcomings, a solution is proposed. Summary of the Invention
[0003] The purpose of this invention is to provide a substation protection pressure plate activation / deactivation process status testing system to address the aforementioned technical deficiencies. This invention determines the operational compliance of the protection pressure plate by observing the difference in its activation / deactivation trajectory. Furthermore, it classifies the actual activation / deactivation status of the protection pressure plate from both pressure and image dimensions. Based on the feedback results, the system displays the number and location information of abnormal protection pressure plates on the monitoring interface, prompting maintenance personnel to inspect and handle the issues. It also conducts in-depth analysis of the activation effectiveness of the activated protection pressure plates to determine whether their activation is effective, thus providing feedback to maintenance personnel for abnormal activation management.
[0004] The objective of this invention can be achieved through the following technical solution: a substation protection pressure plate activation / deactivation process status testing system, comprising an activation / deactivation status analysis center, an operation routine unit, a status analysis module, an activation specification unit, and a background monitoring module; The activation / deactivation status analysis center is used to retrieve the activation / deactivation operation information of each protection pressure plate and send the activation / deactivation operation information to the operation routine unit for operation routine analysis, to determine whether the activation / deactivation operation of each protection pressure plate is accurate, and to obtain routine operation signals or operation abnormal signals. The state analysis module is internally configured with a stress analysis unit, an image analysis unit, a feature extraction unit, a state partitioning unit, and a consistency analysis unit. When a normal operation signal is generated, the status analysis module is used to monitor and analyze the activation and deactivation status of each protection pressure plate one by one, and determine whether the activation and deactivation status of each protection pressure plate is consistent with the preset activation and deactivation status, and obtain an inconsistent signal or a consistent signal. The input specification unit is used to analyze the input validity of the collected electrical signal information and mechanical characteristic information of each protection pressure plate, determine whether the input of the protection pressure plate is effective, and obtain a valid signal or an invalid signal.
[0005] Preferably, the routine analysis process is as follows: The activation and deactivation operation information of each protective pressure plate is obtained. The activation and deactivation operation information includes the spatial coordinates and motion trajectory curves of the operating tool or hand. The motion trajectory curve is compared and analyzed with the standard motion trajectory curve. The difference between the motion trajectory curve and the standard motion trajectory curve is set as the throwing and retreating standard value. The throwing and retreating standard value is then processed to obtain the normal operation signal or the operation abnormal signal.
[0006] Preferably, the pressure analysis unit is used to collect the pressure value of each protective pressure plate, compare and analyze the pressure value with a preset pressure value threshold, and then divide the protective pressure plate into an engaged state and an unengaged state, obtaining an engaged state set A and an unengaged state set B. That is, based on the pressure sensor, the engaged and unengaged states of each protective pressure plate are judged and analyzed. If the pressure value collected by the pressure sensor below the protective pressure plate is greater than or equal to the preset pressure value threshold, the corresponding protective pressure plate is determined to be in an engaged state. If the pressure value collected by the pressure sensor below the protective pressure plate is less than the preset pressure value threshold, the corresponding protective pressure plate is determined to be in an unengaged state. Obtain the number of the protection pressure plate corresponding to the engaged state, and construct an engaged state set A based on the number of the protection pressure plate corresponding to the engaged state. Obtain the number of the protection pressure plate corresponding to the disengaged state, and construct an disengaged state set B based on the number of the protection pressure plate corresponding to the disengaged state.
[0007] Preferably, the image analysis unit is used to acquire real-time images of each protective pressure plate through an installed camera, and to preprocess the real-time images to obtain optimized images.
[0008] Preferably, the feature extraction unit is used to extract global and local features from the optimized image. That is, the optimized image is subjected to feature extraction through a convolutional neural network. The extracted features include shape features, color features, and texture features. Shape features, color features, and texture features are collectively referred to as global features. At the same time, the contour features and corner features of the protective pressure plate are extracted through edge detection and corner detection methods. Contour features and corner features are collectively referred to as local features.
[0009] Preferably, the state division unit is used to divide the protection pressure plate into the engagement and de-engagement states to obtain the engagement state set C and the de-engagement state set D. That is, the extracted global features and local features are input into the pre-set protection pressure plate engagement and de-engagement state recognition model to obtain the engagement and de-engagement state output by the pre-set protection pressure plate engagement and de-engagement state recognition model. The engagement and de-engagement state includes the engagement state and the de-engagement state. Based on the output's engagement / disengagement status, construct an engagement status set C corresponding to the protection pressure plate number for the engagement status, and construct a disengagement status set D corresponding to the protection pressure plate number for the disengagement status.
[0010] Preferably, the consistency analysis unit is used to perform state consistency analysis on the engagement and disengagement states of each protection pressure plate, that is, to compare and analyze the engagement state set A and engagement state set C, and to compare and analyze the disengagement state set B and disengagement state set D to obtain inconsistent signals or consistent signals. When an inconsistency signal is generated: the numbers of the protective pressure plates that differ between the input state set A and the input state set C are obtained, and the numbers of the protective pressure plates that differ between the exit state set B and the exit state set D are also obtained. The numbers of the protective pressure plates that differ are collectively referred to as the abnormal numbers. When a consistent signal is generated: the preset activation / deactivation status of each protection pressure plate is obtained, and the actual activation / deactivation status of each protection pressure plate is compared and analyzed with the preset activation / deactivation status to obtain a normal signal or an abnormal signal.
[0011] Preferably, the input effectiveness analysis process is as follows: Obtain the electrical signal information and mechanical characteristic information of each protection pressure plate that is in the activated state in the normal protection pressure plate; The values of each parameter in the electrical signal information are compared and analyzed with the preset threshold to obtain the deviation value of each parameter in the electrical signal information. The sum of the deviation value of each parameter and the preset weight factor coefficient is set as the electrical error score. The sum of the deviation between the corresponding values of each parameter in the mechanical feature information and the preset threshold and the preset weight factor coefficient is set as the mechanical error score; The sum of the electrical error score and the mechanical error score is set as the input error score, and the input error score is processed to obtain a valid signal or an invalid signal.
[0012] The beneficial effects of this invention are as follows: 1. This invention analyzes the operation of protective pressure plates from the perspective of their deployment and retraction. Specifically, it judges the operational standardization of protective pressure plates by the difference in their deployment and retraction trajectories, thereby transforming the operational standardization from a qualitative description to a quantitative assessment. This helps to improve the operational reliability of protective pressure plates and also helps to promptly detect abnormal deployment and retraction of protective pressure plates. In turn, it helps to carry out targeted management based on the number and location of the protective pressure plates. 2. This invention classifies the actual activation and deactivation status of the protection pressure plate from two dimensions: pressure and image. This allows for the identification of protection pressure plates with abnormal activation and deactivation statuses and their targeted management. It also helps to analyze the consistency between the actual activation and deactivation status of each protection pressure plate and the set activation and deactivation status. Based on the feedback results, the number and location information of the abnormal protection pressure plate are displayed on the monitoring interface, prompting maintenance personnel to check and handle the issue. 3. This invention performs an in-depth analysis of the effectiveness of the protection pressure plate in the current state, determines whether the protection pressure plate is in operation, and prompts maintenance personnel to manage abnormal operations based on information feedback, so as to ensure the effectiveness of the protection pressure plate in operation. Attached Figure Description
[0013] The invention will now be further described with reference to the accompanying drawings; Figure 1 This is the flowchart of this system; Figure 2 This is a partial analysis diagram of Embodiment 2 of the present invention. Detailed Implementation
[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0015] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments; Example 1
[0016] Please see Figures 1 to 2 As shown, the present invention is a substation protection pressure plate activation and deactivation process status test system, including activation and deactivation status analysis center, operation routine unit, status analysis module, activation standard unit and background monitoring module. The activation and deactivation status analysis center is bidirectionally connected to the operation routine unit and status analysis module, the status analysis module is unidirectionally connected to the activation standard unit, and the operation routine unit and activation standard unit are both unidirectionally connected to the background monitoring module. The activation / deactivation status analysis center is used to retrieve the activation / deactivation operation information of each protection pressure plate and send the information to the operation routine unit for routine operation analysis to determine whether the activation / deactivation operation of each protection pressure plate is accurate. The specific routine operation analysis process is as follows: The activation and deactivation information of each protective pressure plate is obtained. The activation and deactivation information includes the spatial coordinates and motion trajectory curves of the operating tool or hand. Among them, an infrared transmitter and receiver arranged around the protective cabinet are used to construct a three-dimensional positioning coordinate system and output the spatial coordinates of the operation point in real time; Based on spatial coordinates and acceleration and angular velocity data collected during the operation process through accelerometers, a continuous motion trajectory curve is generated; The motion trajectory curve is compared and analyzed with the standard motion trajectory curve. The difference between the two curves is set as the activation / deactivation specification value. This value is then processed for discrimination. If the value is less than the preset threshold, a normal operation signal is generated. If the value is greater than or equal to the threshold, an abnormal operation signal is generated. The background monitoring module immediately responds to either the normal or abnormal operation signal and executes the corresponding preset warning operation. This allows for activation / deactivation warning management of protection plates with abnormal operation signals based on information feedback. By comparing and analyzing the trajectory differences, "operational standardization" is transformed from a qualitative description to a quantitative assessment, providing data for maintenance training and assessment. It also helps to promptly identify abnormally activated / deactivated protection plates, enabling targeted management based on the protection plate's number and location to ensure the standardization of protection plate activation / deactivation operations. Example 2
[0017] The state analysis module is internally configured with a stress analysis unit, an image analysis unit, a feature extraction unit, a state partitioning unit, and a consistency analysis unit. When a normal operation signal is generated, the status analysis module is used to monitor and analyze the activation and deactivation status of each protection pressure plate one by one, and to determine whether the activation and deactivation status of each protection pressure plate is consistent with the preset activation and deactivation status. The pressure analysis unit is used to collect the pressure values of each protective pressure plate and compare them with the preset pressure threshold. The pressure values are then compared and analyzed to classify the protective pressure plates into active and deactivated states, resulting in an active state set A and a deactivated state set B. In other words, the active and deactivated states of each protective pressure plate are judged and analyzed based on the pressure sensor. If the pressure value collected by the pressure sensor below the protective pressure plate is greater than or equal to the preset pressure threshold, the corresponding protective pressure plate is determined to be in the active state. If the pressure value collected by the pressure sensor below the protective pressure plate is less than the preset pressure threshold, the corresponding protective pressure plate is determined to be in the deactivated state. Obtain the number of the protection pressure plate corresponding to the engaged state, and construct the engaged state set A based on the number of the protection pressure plate corresponding to the engaged state; obtain the number of the protection pressure plate corresponding to the disengaged state, and construct the disengaged state set B based on the number of the protection pressure plate corresponding to the disengaged state. The image analysis unit is used to acquire real-time images of each protective pressure plate through the installed camera, and to preprocess the real-time images to obtain optimized images. The preprocessing includes grayscale conversion, noise reduction, etc. In this embodiment of the invention, the camera takes pictures of the protective pressure plate at preset time intervals or after receiving a trigger signal to obtain real-time images; The color image is converted to grayscale to reduce the amount of data; the image quality is improved by removing noise from the image using filtering algorithms; and the image contrast is enhanced by methods such as histogram equalization, making the details of the protective pressure plate clearer and facilitating subsequent feature extraction. The feature extraction unit is used to extract global and local features from the optimized image. Specifically, it extracts features from the obtained optimized image using a convolutional neural network (CNN). The extracted features include shape features, color features, and texture features, which are collectively referred to as global features. At the same time, it extracts the contour features and corner features of the protective pressure plate through edge detection and corner detection methods; these contour features and corner features are collectively referred to as local features. The state division unit is used to divide the protection pressure plate into the activation and deactivation states, and obtain the activation state set C and the deactivation state set D. That is, the extracted global features and local features are input into the pre-set protection pressure plate activation and deactivation state recognition model to obtain the activation and deactivation state output by the pre-set protection pressure plate activation and deactivation state recognition model. The activation and deactivation state includes the activation state and the deactivation state. Based on the output's activation / deactivation status, construct an activation status set C corresponding to the protection pressure plate number of the activation status, and construct a deactivation status set D corresponding to the protection pressure plate number of the deactivation status; The consistency analysis unit is used to perform state consistency analysis on the activation and deactivation status of each protection pressure plate to obtain inconsistent or consistent signals; The set of states to be entered, A and C, are compared and analyzed; the set of states to be exited, B and D, are compared and analyzed. If the input state set A and the input state set C are not completely the same, or the exit state set B and the exit state set D are not completely the same, then an inconsistency signal is generated; When an inconsistent signal is generated: The system obtains the numbers of the protection plates that differ between the input state set A and the input state set C, and also obtains the numbers of the protection plates that differ between the exit state set B and the exit state set D. The numbers of the protection plates that differ are collectively referred to as the abnormal numbers. The background monitoring module immediately responds to the abnormal numbers and immediately displays the abnormal number and the location information of the protection plate corresponding to the abnormal number. Then, it performs targeted status verification on the protection plates corresponding to the abnormal numbers to ensure the consistency of the status test of the protection plates. If the input state set A and the input state set C are exactly the same, and the exit state set B and the exit state set D are exactly the same, then a consistent signal is generated; When a consistent signal is generated: The system acquires the preset activation / deactivation status of each protection plate and compares the actual activation / deactivation status with the preset status. If the actual activation / deactivation status corresponds to the preset status, the corresponding protection plate is determined to be a normal protection plate, and a normal signal is generated. If the actual activation / deactivation status does not correspond to the preset status, the corresponding protection plate is determined to be an abnormal protection plate, and an abnormal signal is generated. The background monitoring module immediately responds to normal or abnormal signals, marking normal protection boards in green and abnormal protection boards in red. At the same time, it displays the number and location information of the abnormal protection boards on the monitoring interface, prompting maintenance personnel to check and handle them. Example 3
[0018] When a normal signal is generated: The input specification unit is used to perform an input validity analysis on the collected electrical signal information and mechanical characteristic information of each protective pressure plate, and to determine whether the input of the protective pressure plate is effective. The specific input validity analysis process is as follows: The electrical signal information and mechanical characteristic information of each protection pressure plate in the normal protection pressure plate in the engaged state are obtained. The electrical signal information includes contact resistance, circuit current, etc., and the mechanical characteristic information includes rotation angle and linear displacement of the engagement and disengagement operation, etc. The values of each parameter in the electrical signal information are compared and analyzed with the preset threshold to obtain the deviation value of each parameter in the electrical signal information. The sum of the deviation value of each parameter and the preset weight factor coefficient is set as the electrical error score. The sum of the deviation between the corresponding values of each parameter in the mechanical feature information and the preset threshold and the preset weight factor coefficient is set as the mechanical error score; The sum of electrical error score and mechanical error score is set as input error score. The input error score is then judged. If the input error score is less than the preset input error score threshold, it is judged as a valid input and a valid signal is generated. If the input error score is greater than or equal to the preset input error score threshold, it is judged as an invalid input and an invalid signal is generated. The background monitoring module immediately responds to valid or invalid signals, immediately executes the preset early warning operation corresponding to the invalid signal, marks the protection pressure plate in the activation state corresponding to the invalid signal in yellow, and displays the number and location information of the yellow protection pressure plate to prompt maintenance personnel to perform abnormal activation control to ensure the effectiveness of the protection pressure plate activation; In summary, this invention analyzes the operation of protection pressure plates from the perspective of their activation and deactivation. Specifically, it judges the operational standardization of protection pressure plates by observing the differences in their activation and deactivation trajectories, thus transforming operational standardization from a qualitative description to a quantitative assessment. This helps improve the operational reliability of protection pressure plates and facilitates the timely detection of abnormally activated or deactivated pressure plates. Furthermore, it enables targeted management based on the pressure plate's number and location. Additionally, it categorizes the actual activation and deactivation status of protection pressure plates from both pressure and image dimensions, identifying and managing pressure plates with abnormal activation / deactivation states. This also helps analyze the consistency between the actual activation / deactivation status of each protection pressure plate and its set activation / deactivation status. Based on the feedback results, it displays the number and location information of abnormal protection pressure plates on the monitoring interface, prompting maintenance personnel to check and handle the situation. Finally, it provides in-depth analysis of the effectiveness of activated protection pressure plates, determining whether their activation is effective. This feedback prompts maintenance personnel to manage abnormal activation and ensure the effectiveness of protection pressure plate activation.
[0019] The threshold is set for comparative analysis of results to determine whether they are good or bad. The value of the threshold is determined by a combination of large-scale model analysis of sample data and human experience. It can also be adjusted appropriately based on seasonal or common-sense influencing factors.
[0020] The size of the coefficient is a specific value obtained by quantifying each parameter to facilitate subsequent comparison. The size of the coefficient depends on the amount of sample data and the corresponding operating coefficient initially set by those skilled in the art for each set of sample data; as long as it does not affect the proportional relationship between the parameter and the quantified value.
[0021] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A substation protection pressure plate activation / deactivation process status testing system, characterized in that, It includes a deployment and withdrawal status analysis center, an operation routine unit, a status analysis module, a deployment standard unit, and a back-end monitoring module; The activation / deactivation status analysis center is used to retrieve the activation / deactivation operation information of each protection pressure plate and send the activation / deactivation operation information to the operation routine unit for operation routine analysis, to determine whether the activation / deactivation operation of each protection pressure plate is accurate, and to obtain routine operation signals or operation abnormal signals. The state analysis module is internally configured with a stress analysis unit, an image analysis unit, a feature extraction unit, a state partitioning unit, and a consistency analysis unit. When a normal operation signal is generated, the status analysis module is used to monitor and analyze the activation and deactivation status of each protection pressure plate one by one, and determine whether the activation and deactivation status of each protection pressure plate is consistent with the preset activation and deactivation status, and obtain an inconsistent signal or a consistent signal. The input specification unit is used to analyze the input validity of the collected electrical signal information and mechanical characteristic information of each protection pressure plate, determine whether the input of the protection pressure plate is effective, and obtain a valid signal or an invalid signal.
2. The substation protection pressure plate activation / deactivation process status testing system according to claim 1, characterized in that, The routine analysis process for the operation is as follows: The activation and deactivation information of each protective pressure plate is obtained. The activation and deactivation information includes the spatial coordinates and motion trajectory curves of the operating tool or hand. The motion trajectory curve is compared and analyzed with the standard motion trajectory curve. The difference between the motion trajectory curve and the standard motion trajectory curve is set as the throwing and retreating standard value. The throwing and retreating standard value is then processed to obtain the normal operation signal or the operation abnormal signal.
3. The substation protection pressure plate activation / deactivation process status testing system according to claim 1, characterized in that, The pressure analysis unit is used to collect the pressure value of each protective pressure plate and compare the pressure value with a preset pressure value threshold. Then, the protective pressure plate is divided into an engaged state and an unengaged state, resulting in an engaged state set A and an unengaged state set B. That is, the engaged and unengaged states of each protective pressure plate are judged and analyzed based on the pressure sensor. If the pressure value collected by the pressure sensor below the protective pressure plate is greater than or equal to the preset pressure value threshold, the corresponding protective pressure plate is determined to be in the engaged state. If the pressure value collected by the pressure sensor below the protective pressure plate is less than the preset pressure value threshold, the corresponding protective pressure plate is determined to be in the unengaged state. Obtain the number of the protection pressure plate corresponding to the engaged state, and construct an engaged state set A based on the number of the protection pressure plate corresponding to the engaged state. Obtain the number of the protection pressure plate corresponding to the disengaged state, and construct an disengaged state set B based on the number of the protection pressure plate corresponding to the disengaged state.
4. The substation protection pressure plate activation / deactivation process status testing system according to claim 3, characterized in that, The image analysis unit is used to acquire real-time images of each protective pressure plate through the installed camera, and to preprocess the real-time images to obtain optimized images.
5. The substation protection pressure plate activation / deactivation process status testing system according to claim 4, characterized in that, The feature extraction unit is used to extract global and local features from the optimized image. That is, the optimized image is processed by a convolutional neural network to extract features, including shape features, color features, and texture features. Shape features, color features, and texture features are collectively referred to as global features. At the same time, the contour features and corner features of the protective pressure plate are extracted by edge detection and corner detection methods. Contour features and corner features are collectively referred to as local features.
6. The substation protection pressure plate activation / deactivation process status testing system according to claim 5, characterized in that, The state division unit is used to divide the protection pressure plate into the engagement and de-engagement states, and obtain the engagement state set C and the de-engagement state set D. That is, the extracted global features and local features are input into the pre-set protection pressure plate engagement and de-engagement state recognition model to obtain the engagement and de-engagement state output by the pre-set protection pressure plate engagement and de-engagement state recognition model. The engagement and de-engagement state includes the engagement state and the de-engagement state. Based on the output's engagement / disengagement status, construct an engagement status set C corresponding to the protection pressure plate number for the engagement status, and construct a disengagement status set D corresponding to the protection pressure plate number for the disengagement status.
7. The substation protection pressure plate activation / deactivation process status testing system according to claim 6, characterized in that, The consistency analysis unit is used to perform state consistency analysis on the engagement and disengagement status of each protection pressure plate, that is, to compare and analyze the engagement state set A and engagement state set C, and to compare and analyze the disengagement state set B and disengagement state set D to obtain inconsistent signals or consistent signals. When an inconsistency signal is generated: the numbers of the protective pressure plates that differ between the input state set A and the input state set C are obtained, and the numbers of the protective pressure plates that differ between the exit state set B and the exit state set D are also obtained. The numbers of the protective pressure plates that differ are collectively referred to as the abnormal numbers. When a consistent signal is generated: the preset activation / deactivation status of each protection pressure plate is obtained, and the actual activation / deactivation status of each protection pressure plate is compared and analyzed with the preset activation / deactivation status to obtain a normal signal or an abnormal signal.
8. The substation protection pressure plate activation / deactivation process status testing system according to claim 1, characterized in that, The process of analyzing the effectiveness of the inputs is as follows: Obtain the electrical signal information and mechanical characteristic information of each protection pressure plate that is in the activated state in the normal protection pressure plate; The values of each parameter in the electrical signal information are compared and analyzed with the preset threshold to obtain the deviation value of each parameter in the electrical signal information. The sum of the deviation value of each parameter and the preset weight factor coefficient is set as the electrical error score. The sum of the deviation between the corresponding values of each parameter in the mechanical feature information and the preset threshold and the preset weight factor coefficient is set as the mechanical error score; The sum of the electrical error score and the mechanical error score is set as the input error score, and the input error score is processed to obtain a valid signal or an invalid signal.