Analysis method for preventing misoperation based on status monitoring of pressure plate in substation

Abstract

The present invention proposes an anti-misoperation analysis method based on the monitoring of the substation pressure plate status. By systematically maintaining the substation pressure plate ledger, monitoring the withdrawal and input status of the pressure plates, and cooperating with the alarm center for monitoring; when operating the pressure plates, determining whether the operating sequence of the pressure plates is correct; using dome cameras and PTZ cameras to conduct real-time video monitoring of the main equipment to assist in judging the status of the pressure plates; when operating the pressure plates, judging whether the relevant operations will cause the primary equipment in operation to lose its protection function; the real-time monitoring of the substation pressure plates of the present invention, through relevant communication protocol agreements, by establishing a model of the equipment, feeds the pressure plate data back to the monitoring platform in real time, and at the same time the monitoring platform can conduct in-depth business analysis on the data to achieve the practical purpose, and the system has the characteristics of high data timeliness and convenient monitoring.

Description

Technical Field

[0001] The present invention belongs to the field of on-line monitoring of substations, and particularly relates to a misoperation prevention analysis method based on the monitoring of the state of substation pressure plates. Background Art

[0002] During the operation of intelligent substations, cases of misoperation or refusal to operate of protection devices caused by the withdrawal and insertion of protection pressure plates occur frequently, seriously affecting the safe operation of substations. In view of this situation, based on traditional manual inspections, etc., this system integrates the on-line real-time data upload of pressure plate withdrawal and insertion and a misoperation prevention rule library, and at the same time transmits real-time camera images of individual key areas to achieve comprehensive analysis and monitoring of pressure plate misoperation prevention, thereby reducing accidents caused by missed insertion and misinsertion of pressure plates. Summary of the Invention

[0003] Aiming at the defects of the prior art such as poor timeliness, the present invention provides a misoperation prevention analysis method based on the monitoring of the state of substation pressure plates, uses the Internet of Things data acquisition and transmission protocol to collect the state of pressure plates in real time, prevents misinsertion and miswithdrawal of pressure plates, and achieves real-time monitoring and timely correction of pressure plate data.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A misoperation prevention analysis method based on the monitoring of the state of substation pressure plates, the specific steps are as follows:

[0006] First, systematically maintain the substation pressure plate ledger, monitor the withdrawal and insertion states of pressure plates, and cooperate with the alarm center for monitoring;

[0007] Then, when performing pressure plate operations, determine whether the pressure plate operation sequence is correct;

[0008] Then, use monitoring equipment to perform real-time video monitoring of the main equipment to assist in judging the state of the pressure plate;

[0009] During the monitoring process, use the camera tracking algorithm, specifically as follows:

[0010] Connect the camera, and customize an algorithm for the angle problem of the camera. The three-dimensional plane coordinate system is the x, z coordinate system. Let the camera be the coordinate point C(X1, Z1), and the equipment be the coordinate point P(X2, Z2);

[0011] Then calculate:

[0012] tanθ = OM / CM = (Z2 - Z1) / (X2 - X1), and calculate the value of θ from this;

[0013] Since the camera has a default preset angle, assuming the default angle is ∠DCM, in the following algorithm, cp represents the default angle value, and the camera rotation direction variable is k, where 1 represents counterclockwise and -1 represents clockwise. Then:

[0014] First, calculate the value of the trigonometric function tanθ. The basic algorithm is the ratio of the right-angled side to the hypotenuse, which is defined as the Z coordinate value of the device minus the Z coordinate value of the camera divided by the X coordinate value of the device minus the X coordinate value of the camera, defined as double xrad = Math.atan2(target.getZ() - camera.getZ(), target.getX() - camera.getX());

[0015] According to the calculated xrad value divided by MathPI * 180, the included angle between the device and the horizontal coordinate can be calculated, defined as the parameter angle. If the angle is negative, the negative angle is converted to a positive angle, that is, 360 + angle. According to the included angle value minus the camera default angle cp, and then multiplied by k, the angle required to reach the target position can be obtained. The formula is k * (angle - cp). Similarly, if the angle is negative, it needs to be added 360 to convert it to a positive angle, and then take the modulus 360 of angle. The obtained angle here is the plane angle that the camera needs to rotate;

[0016] After the pressure plate operation, it is judged whether the relevant operation will cause the primary equipment in operation to lose its protection function;

[0017] For the monitoring and anti-misoperation correction of the input and output states of the pressure plate, on the basis of the auxiliary platform, data source amplification, model transformation, and establishment of a pressure plate anti-misoperation rule library are carried out, and at the same time, the account maintenance of the pressure plate auxiliary equipment is increased;

[0018] Finally, through the interaction between the auxiliary platform, the monitoring platform, and the acquisition service, the pressure plate signal is sent up. The monitoring platform determines the pressure plate state and gives anti-misoperation prompts according to the set rule library, so as to guide the operators to make corrections.

[0019] As a further improvement of the present invention, to establish a pressure plate anti-misoperation rule library to achieve the anti-misoperation of the pressure plate, the specific steps are as follows:

[0020] 1. Data acquisition;

[0021] According to the primary equipment mounted, perform data expansion and modeling operations on the pressure plate protection device;

[0022] 2. Rule library establishment;

[0023] Establish the logical relationship between the primary equipment and the pressure plate, and between the pressure plates. At the same time, establish a rule library according to the national grid standards and the specific on-site real-time requirements for anti-misoperation judgment;

[0024] The core principles for establishing the pressure plate error prevention rule library are:

[0025] When the protection function is abnormal or the function is not fully put into operation, the primary equipment is prohibited from operating the equipment or running. When operating the secondary equipment, the current state of the interval is intelligently identified, and the input and output logic is adjusted according to the different states of the interval. When operating the primary equipment and the secondary equipment at the same time, the rule library determines the logical state of the secondary equipment involved to ensure the safety and reliability of the primary equipment operation;

[0026] 3. Model expansion;

[0027] The relationship between the two is established, and the points of the logical model are clearly defined. Therefore, not only the concept of physical equipment is added, but also the equipment is parameterized by area, interval, and voltage level, making it more in line with the operating habits of on-site substation operators.

[0028] As a further improvement of the present invention, in establishing the model extension of the pressure plate error prevention rule library, it is necessary to consider the conventional substation, name, state attributes and attribute configuration of the pressure plate, such as the device corresponding to the pressure plate, the specific function type of the pressure plate and other data structure attributes, which are used to establish the corresponding relationship between the pressure plate and the primary equipment, and between the pressure plate and the device;

[0029] In view of the actual functional differences of each pressure plate, the specific functional type of each pressure plate is defined in the pressure plate model. When the pressure plate functional type is selected differently, the judgment conditions of the secondary error prevention will also be different.

[0030] The anti-misoperation analysis method based on substation pressure plate status monitoring of the present invention has the following advantages:

[0031] The real-time monitoring of the substation pressure plate of the present invention, through the relevant communication protocol and the establishment of the model of the equipment, the pressure plate data is fed back to the monitoring platform in real time. At the same time, the monitoring platform can conduct in-depth business analysis of the data to achieve practical purposes. The system has the characteristics of high data timeliness and convenient monitoring. In addition, for the monitoring of the input and output status of the pressure plate and the prevention of error correction, this application performs data source expansion, model transformation, and establishment of a pressure plate anti-error rule library based on the auxiliary platform, and at the same time increases the ledger maintenance of the pressure plate auxiliary equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is the working schematic diagram of the present invention:

[0033] Figure 2 This is the camera and device angle calculation coordinate diagram of the present invention:

[0034] Figure 3 It is the data overview application interface of the present invention;

[0035] Figure 4 is the first operation and maintenance interface of the present invention;

[0036] Figure 5 is the second operation and maintenance interface of the present invention;

[0037] Figure 6 is the third operation and maintenance interface of the present invention; Specific Embodiments

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0039] As a specific embodiment of the present invention, the present invention provides a method for preventing misoperation analysis based on the monitoring of the state of substation pressure plates. Using the Internet of Things data acquisition and transmission protocol, the state of the pressure plates is collected in real time to prevent incorrect insertion and removal of the pressure plates, achieving real-time monitoring and timely correction of the pressure plate data:

[0040] Combined with the actual analysis requirements of the substation and the results of application research, the specific steps are as follows:

[0041] First, systematically maintain the substation pressure plate ledger, monitor the insertion and removal states of the pressure plates, and cooperate with the alarm center for monitoring;

[0042] Then, when performing pressure plate operations, determine whether the operation sequence of the pressure plates is correct;

[0043] Then, use dome cameras and PTZ cameras to perform real-time video monitoring of the main equipment to assist in judging the state of the pressure plates;

[0044] After that, when performing pressure plate operations, determine whether the relevant operations will cause the primary equipment in operation to lose its protection function;

[0045] For the monitoring of the insertion and removal states of the pressure plates and the prevention of misoperation correction, the present application expands the data source, modifies the model, and establishes a pressure plate misoperation prevention rule library on the basis of the auxiliary platform, and at the same time increases the ledger maintenance of the pressure plate auxiliary equipment.

[0046] During the monitoring process of the present application, the camera tracking algorithm is used, specifically as follows:

[0047] To view the equipment situation more intuitively and from multiple angles, cameras are connected, and an algorithm is customized for the angle problem of the cameras. The three-dimensional plane coordinate system is the x and z coordinate systems. Let the camera be the coordinate point C(X1, Z1), and the equipment be the coordinate point P(X2, Z2). For details, see Figure 2 .

[0048] Then it can be calculated:

[0049] tanθ = PM / CM = (Z2 - Z1) / (X2 - X1), from which the value of θ can be calculated

[0050] Since the camera has a default preset angle, assuming the default angle is ∠DCM (cp represents the default angle value in the following algorithm), and the camera rotation direction variable is k (1 represents counterclockwise, -1 represents clockwise), then:

[0051] double xrad = Math.atan2(target.getZ() - camera.getZ(), target.getX() - camera.getX());

[0052] double angle = xrad / Math.PI * 180;

[0053] if (angle < 0) { angle = 360 + angle}

[0054] angle = k * (angle - cp);

[0055] if (angle < 0) { angle = 360 + angle}

[0056] angle = angle % 360;

[0057] The angle obtained here is the plane angle that the camera needs to rotate.

[0058] Finally, as Figure 1 shown, through the interaction between the auxiliary platform, the monitoring platform, and the acquisition service, the pressure plate signal is sent up. The monitoring platform determines the state of the pressure plate and gives anti-misoperation prompts according to the set rule library, so as to guide the operator to make corrections.

[0059] Establish an anti-misoperation rule library for the pressure plate to achieve anti-misoperation of the pressure plate. The main expansions to be achieved are as follows

[0060] 1. Data acquisition;

[0061] According to the primary equipment mounted, perform data expansion and modeling operations on the pressure plate protection device.

[0062] 2. Rule library establishment;

[0063] Establish the logical relationships between the primary equipment and the pressure plate, and between the pressure plates. At the same time, establish a rule library according to the national grid standards and the specific on-site real-time requirements for anti-misoperation judgment. The core principle for establishing the pressure plate anti-misoperation rule library is: when there is an abnormality in the protection function or the function is not fully put into operation, it is prohibited to operate the primary equipment to the equipment or put it into operation. When operating the secondary equipment, the current state of the interval where it is located is intelligently identified, and the input and output logic is adjusted according to the different states of the interval; for the operation of the primary equipment accompanied by the operation of the secondary equipment, the logical states of the secondary equipment involved are discriminated in the rule library to ensure the safety and reliability during the operation of the primary equipment.

[0064] 3. Model Expansion;

[0065] Among them, the modeling operation is refined, mainly involving the data modeling of primary equipment and protection devices. It is necessary to establish the association relationship between the two, and at the same time clearly define the points of the logical model, so it not only adds the concept of physical equipment, but also distinguishes the equipment according to multiple parameters such as area, interval, and voltage level, making it more in line with the operation habits of substation on-site operators. The following table can be referred to.

[0066]

[0067]

[0068] Expand the platen model in the anti-misoperation system. In addition to the conventional substation, name, and status attributes, it also includes the attribute configuration of the platen as shown in the following table, such as the data structure attributes of the device corresponding to the platen, the specific function type of the platen, etc., which are used to establish the corresponding relationship between the platen and primary equipment, and the platen and the device.

[0069]

[0070] According to the actual functional differences of each platen, define the specific function type of each platen in the platen model. When the platen function type is selected differently, the judgment conditions for secondary anti-misoperation will also be different.

[0071] This application fundamentally solves the previous cumbersome manual inspection process for platen monitoring. Only the real-time platen status reported by the system needs to be concerned. At the same time, through relevant video devices, it is assisted to judge the platen input / output status and the impact of the operation on the protection of primary equipment, timely discover the impact that may be caused to primary equipment due to incorrect platen operation, and intervene in advance for defect elimination.

[0072] The following introduces the application of the system in practice.

[0073] Currently, the organizational structure applied to power companies in each city generally has a three-layer structure, namely the city company, the operation and maintenance team, and the substation. The overall monitoring situation of the platen equipment of the power company is mainly displayed according to the organizational structure on the application interface of the substation data overview. The city company is as Figure 3 shown, and generally shows the overall situation of the primary equipment of the operation and maintenance teams under the city company and the current operation status of the platens under the city company. After selecting the operation and maintenance team or clicking in through the page data points, the overall situation of each substation under the operation and maintenance team is displayed, such as Figure 4 ;

[0074] The record query can query the status change records of all platens, provide the complete input / output records for the users, and serve as the data basis for analysis, such as Figure 5 ;

[0075] Configuration management mainly focuses on the configuration of the clamping plate rule library, which is used as the comparison standard for whether the clamping plate status is abnormal, so as to determine whether the operation on the clamping plate affects the operation of this device. For example Figure 6 .

[0076] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in any other form. Any modification or equivalent change made according to the technical essence of the present invention still belongs to the scope protected by the present invention.

Claims

1. Anti-misoperation analysis method based on the status monitoring of substation pressure plates, the specific steps are as follows, and it is characterized in that: First, systematically maintain the substation pressure plate ledger, monitor the withdrawal and input status of the pressure plates, and cooperate with the alarm center for monitoring; Then, when operating the pressure plates, determine whether the operating sequence of the pressure plates is correct; Then use the monitoring equipment to conduct real-time video monitoring of the main equipment to assist in judging the status of the pressure plates; During the monitoring process, use the camera tracking algorithm, specifically as follows: Connect the camera and customize the algorithm for the angle problem of the camera. The three-dimensional plane coordinate system is the x and z coordinate systems. Let the camera be the coordinate point C(X1, Z1) and the equipment be the coordinate point P(X2, Z2); Then calculate: tanθ = (Z2 - Z1) / (X2 - X1) and calculate the value of θ from this; First calculate the value of the trigonometric function tanθ. The algorithm is the ratio of the right-angled side to the hypotenuse, that is, the Z coordinate value of the equipment minus the Z coordinate value of the camera divided by the X coordinate value of the equipment minus the X coordinate value of the camera, defined as double xrad = Math.atan2(target.getZ() - camera.getZ(), target.getX() - camera.getX()); According to the calculated xrad value divided by MathPI * 180, calculate the angle between the equipment and the horizontal coordinate, defined as the parameter angle. If the calculated angle is negative, convert the negative angle to a positive angle, that is, 360 + angle. Then subtract the default angle cp of the camera from the angle value and multiply by k. The camera rotation direction variable is k, 1 represents counterclockwise, -1 represents clockwise, to obtain the angle that needs to be rotated to reach the target position. The formula is k * (angle - cp). If the calculated angle is negative, add 360 to convert the negative angle to a positive angle, and then take the modulus 360 of the positive angle. The formula is angle = angle % 360 to obtain the plane angle that the camera needs to rotate; After that, when operating the pressure plates, judge whether the relevant operations will cause the primary equipment in operation to lose its protection function; For the monitoring of the input and withdrawal status of the pressure plates and anti-misoperation correction, on the basis of the auxiliary platform, expand the data source, transform the model, establish a pressure plate anti-misoperation rule library, and at the same time increase the ledger maintenance of the pressure plate auxiliary equipment; The core principle for establishing the pressure plate anti-misoperation rule library is: When the protection function is abnormal or the function is not fully input, it is prohibited to operate the primary equipment to the equipment or put it into operation. When operating the secondary equipment, intelligently identify the current status of the interval where it is located, and adjust the input and withdrawal logic according to the different statuses of the interval; for the operation of the primary equipment accompanied by the operation of the secondary equipment, the logical status of the secondary equipment involved in the rule library is judged to ensure the safety and reliability during the operation of the primary equipment; Finally, through the interaction between the auxiliary platform, the monitoring platform, and the acquisition service, the pressure plate signals are sent up. The monitoring platform determines the status of the pressure plates and gives anti-misoperation prompts according to the set rule library, so as to guide the operators to make corrections.

2. The anti-misoperation analysis method based on the substation pressure plate state monitoring according to claim 1, wherein: Establish an anti-misoperation rule library for the pressure plate to achieve anti-misoperation of the pressure plate. The specific steps are as follows: S1. Data acquisition; Perform data extension and modeling operations on the pressure plate protection device according to the primary equipment mounted; S2. Rule library establishment; Establish the logical relationships between the primary equipment and the pressure plate, and between the pressure plates. At the same time, establish a rule library according to the State Grid standards and the specific on-site real-time requirements for anti-misoperation judgment; S3. Model extension; Establish the association relationship between the primary equipment and the pressure plate, and at the same time clearly define the points of the logical model.

3. According to the anti-misoperation analysis method based on the substation pressure plate status monitoring described in claim 2, characterized in that: In the model extension of establishing the anti-misoperation rule library for the pressure plate, conventional substations, names, status attributes, and attribute configurations of the pressure plate are considered to establish the corresponding relationships between the pressure plate and the primary equipment, and between the pressure plate and the device.

Images