Integrated control system for box-type substation

Abstract

The present invention discloses an integrated control system for a box-type substation, which relates to the technical field of substation control. The system includes a monitoring module for obtaining first state information of the target box-type substation when there is no fault and second state information when there is a fault according to the three-dimensional model data, temperature data, gas data and control instructions of the target box-type substation; and a control module for obtaining a fault prediction result according to the three-dimensional model data, current temperature data and gas data. By performing fault prediction on the box-type substation according to the gas data and obtaining the fault prediction result, accurate early warning can be realized at the initial stage of the fault of the box-type substation, so that at the initial stage of the fault, the fault of the box-type substation can be warned and actively processed, and the permanent fault can be eliminated before it occurs, reducing the probability of power outage accidents caused by equipment failures, thereby improving the power supply quality and service quality.

Description

Technical Field

[0001] The present invention relates to the technical field of substation control, and particularly to an integrated control system for a box-type substation. Background Art

[0002] A box-type substation (hereinafter referred to as a box substation) is a high-voltage switchgear, a transformer, and a low-voltage distribution device, which are factory prefabricated indoor and outdoor compact distribution equipment arranged according to a certain wiring scheme. That is, functions such as high-voltage power reception, transformer step-down, and low-voltage power distribution are organically combined together and installed in a fully enclosed and movable steel structure box body. The box body is moisture-proof, rust-proof, dust-proof, mouse-proof, fire-proof, anti-theft, heat-insulating, and mechatronic, and operates in a fully enclosed manner, including a communication module, a lighting module, an LED liquid crystal display module, a closing and opening protection module, switches, and cooling fans.

[0003] The operating state of the box-type substation directly affects the safety and stability of the power system. During the operation of the box-type substation, due to various reasons, faults such as overheating, discharging, and short-circuiting may occur, resulting in the decomposition of oil and insulating materials, generating gases of different types and contents. These gases dissolve in the transformer oil to form dissolved gases in oil (DGA), including hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide, carbon dioxide, total hydrocarbons, etc.

[0004] Currently, Chinese invention application No. 202410569568.9 discloses a box-type substation and its control method, which realizes automatic sequential control power-on and sequential control power-off according to real-time data from multiple sources and multi-layer control logic criteria, and solves the problems of difficult safe operation and high management cost of existing box-type substations. However, it can only perform fault handling after a fault occurs in the box-type substation, that is, after-fault repair, and it is difficult to give an early warning of the fault of the box-type substation and actively handle it at the initial stage of the fault, so as to reduce the probability of power outage accidents caused by equipment failures. Summary of the Invention

[0005] The technical problem solved by the present invention is that in the related art, it is only possible to perform fault handling after a fault occurs in the box-type substation, and it is difficult to give an early warning of the fault of the box-type substation and actively handle it at the initial stage of the fault, so as to reduce the probability of power outage accidents caused by equipment failures.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: An integrated control system for a box-type substation, including a monitoring module, which is used to obtain the first state information of the target box-type substation when there is no fault and the second state information when there is a fault according to the three-dimensional model data, temperature data, gas data and control instructions of the target box-type substation; A control module, which is used to obtain a fault prediction result according to the three-dimensional model data, current temperature data and gas data, construct a first correspondence and a second correspondence between the fault prediction result and the first state information and the second state information respectively, and obtain control instruction information according to the first correspondence and the second correspondence.

[0007] As a preferred solution of the integrated control system for a box-type substation according to the present invention, wherein: the first state information includes the first temperature data, the first gas data and the first control instruction of the target box-type substation when there is no fault;

[0008] The second state information includes the second temperature data, the second gas data and the second control instruction of the target box-type substation when there is a fault.

[0009] As a preferred solution of the integrated control system for a box-type substation according to the present invention, wherein: the control module includes a temperature acquisition unit, a gas acquisition unit, a prediction unit and a control unit;

[0010] The temperature acquisition unit is used to continuously acquire the temperature field data of the target box-type substation, calibrate the actual detection points inside and on the outer surface of the target box-type substation, record the positions of the actual detection points, calibrate temperature points corresponding to the positions of the actual detection points on the three-dimensional model data, set temperature sensors at the actual detection points, use a synchronous signal transmitter to send detection instructions to each temperature sensor through the temperature sensors, each temperature sensor receives the detection instructions, feeds back the current temperature signal, and records the feedback time and the position of the temperature sensor in real time, correspond the respective temperature signals to the temperature points, and use different color values to represent different temperatures to form the temperature field data of the target box-type substation;

[0011] The gas acquisition unit is used to continuously acquire the solubility data of the first gas in the target box-type substation to obtain a first gas solubility sequence;

[0012] The prediction unit is used to obtain a first gas prediction sequence according to the first gas solubility sequence and obtain a fault prediction result of the box-type substation according to the first gas prediction sequence;

[0013] The control unit is used to construct a first correspondence and a second correspondence between the fault prediction result and the first state information and the second state information respectively, and obtain control instruction information according to the first correspondence and the second correspondence.

[0014] As a preferred solution of the integrated control system for the box-type substation according to the present invention, wherein: the prediction unit further includes:

[0015] Judge whether the prediction error of the first gas prediction sequence exceeds a preset error threshold;

[0016] If the prediction error exceeds the preset error threshold, then predict the operating state of the target box-type substation according to the first gas solubility sequence to obtain the fault prediction result;

[0017] The predicting the operating state of the target box-type substation according to the first gas prediction sequence to obtain the fault prediction result of the target box-type substation includes:

[0018] If the prediction error does not exceed the preset error threshold, then predict the operating state of the target box-type substation according to the first gas prediction sequence to obtain the fault prediction result.

[0019] As a preferred solution of the integrated control system for the box-type substation according to the present invention, wherein: the prediction unit further includes:

[0020] Continuously collect the solubility data of the second gas in the target box-type substation to obtain a second gas solubility sequence, wherein the generation time of at least part of the second gas is later than that of the first gas;

[0021] The if the prediction error exceeds the preset error threshold, then predict the operating state of the target box-type substation according to the first gas solubility sequence to obtain the fault prediction result includes:

[0022] If the prediction error exceeds the preset error threshold, then predict the operating state of the target box-type substation according to the first gas solubility sequence and the second gas solubility sequence to obtain the fault prediction result.

[0023] As a preferred solution of the integrated control system for the box-type substation according to the present invention, wherein: the prediction unit further includes: if the prediction error does not exceed the preset error threshold, then predict the operating state of the target box-type substation according to the first gas prediction sequence to obtain the fault prediction result, including:

[0024] If the prediction error does not exceed the preset error threshold, then predict the solubility data of the second gas according to the first gas prediction sequence and the second gas solubility sequence to obtain a second gas prediction sequence, and predict the operating state of the target box-type substation according to the first gas prediction sequence and the second gas prediction sequence to obtain the fault prediction result.

[0025] As a preferred solution of the integrated control system for a box-type substation according to the present invention, wherein: the prediction unit further includes: if the prediction error does not exceed the preset error threshold, then predict the solubility data of the second gas according to the first gas prediction sequence and the second gas solubility sequence to obtain a second gas prediction sequence, and predict the operating state of the target box-type substation according to the first gas prediction sequence and the second gas prediction sequence to obtain the fault prediction result, including:

[0026] If the prediction error does not exceed the preset error threshold, then determine whether the second gas solubility sequence deviates from the preset sequence by more than a preset range;

[0027] If the second gas solubility sequence deviates from the preset sequence by more than a preset range, then predict the operating state of the target box-type substation according to the first gas solubility sequence and the second gas solubility sequence to obtain the fault prediction result;

[0028] If the second gas solubility sequence does not deviate from the preset sequence by more than a preset range, then predict the solubility data of the second gas according to the first gas prediction sequence and the second gas solubility sequence to obtain a second gas prediction sequence, and predict the operating state of the target box-type substation according to the first gas prediction sequence and the second gas prediction sequence to obtain the fault prediction result, and the fault prediction result includes no fault and a fault.

[0029] As a preferred solution of the integrated control system for a box-type substation according to the present invention, wherein: the first gas at least includes hydrogen, methane, carbon monoxide and carbon dioxide; the second gas at least includes ethane, ethylene and acetylene.

[0030] As a preferred solution of the integrated control system for a box-type substation according to the present invention, wherein: the control instruction information includes a cooling fan control instruction, a wireless communication module control instruction, a lighting module control instruction, an LED liquid crystal display module control instruction, a switching-on and switching-off protection module control instruction and a switch state control instruction;

[0031] In the control unit, temperature field data and cooling fan control instructions are pre-corresponded one by one to establish a temperature instruction set. According to the real-time collected temperature field data, the corresponding cooling fan control instruction is obtained from the temperature instruction set and sent to the cooling fan.

[0032] As a preferred solution of the integrated control system for the box-type substation described in the present invention, wherein: the first state information includes wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, switching-on and switching-off protection module control instructions, and switch state control instructions when the target box-type substation is fault-free;

[0033] The second state information includes wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, switching-on and switching-off protection module control instructions, and switch state control instructions when the target box-type substation has a fault;

[0034] According to the fault prediction result and the first correspondence and the second correspondence respectively, the corresponding wireless communication module control instruction, lighting module control instruction, LED liquid crystal display module control instruction, switching-on and switching-off protection module control instruction, and switch state control instruction are obtained and sent to the corresponding communication module, lighting module, LED liquid crystal display module, switching-on and switching-off protection module, and switch.

[0035] The beneficial effects of the present invention: Fault prediction is carried out on the box-type substation according to the gas data, and the fault prediction result is obtained, which can realize accurate early warning at the initial stage of the fault of the box-type substation. Therefore, at the initial stage of the fault, the fault of the box-type substation is warned and actively processed, and it is eliminated before the occurrence of a permanent fault, reducing the probability of power outage accidents caused by equipment failures, thereby improving the power supply quality and service quality. Brief Description of the Drawings

[0036] Figure 1 It is a schematic structural diagram of an integrated control system for a box-type substation provided by an embodiment of the present invention;

[0037] Figure 2 It is another schematic structural diagram of an integrated control system for a box-type substation provided by an embodiment of the present invention;

[0038] Figure 3 It is a schematic flowchart of a fault prediction method executed by an integrated control system for a box-type substation provided by an embodiment of the present invention;

[0039] Figure 4 It is a schematic flowchart of a fault prediction method executed by an integrated control system for a box-type substation provided by another embodiment of the present invention;

[0040] Figure 5A schematic flowchart of a fault prediction method executed by an integrated control system for a box-type substation provided in another embodiment of the present invention. Detailed implementation manners

[0041] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments.

[0042] As Figure 1 shown, the integrated control system 1 for a box-type substation includes a monitoring module 10 and a control module 20. Among them, preferably, the control module 20 includes a temperature acquisition unit 21, a gas acquisition unit 22, a prediction unit 23, and a control unit 24.

[0043] For a specific description of the functions of each module in the integrated control system 1 for a box-type substation, please refer to Figure 2 , Figure 2 Another structural schematic diagram of the integrated control system for a box-type substation provided in an embodiment of the present invention. Among them, the integrated control system 1 for a box-type substation includes a monitoring module 10, which is used to obtain the first state information of the target box-type substation when there is no fault and the second state information when there is a fault according to the three-dimensional model data, temperature data, gas data, and control instructions of the target box-type substation;

[0044] A control module 20, which is used to obtain a fault prediction result according to the three-dimensional model data, current temperature data, and gas data, construct a first correspondence and a second correspondence between the fault prediction result and the first state information and the second state information respectively, and obtain control instruction information according to the first correspondence and the second correspondence.

[0045] Obtain the three-dimensional model data of the box-type substation in advance by means of image scanning or modeling in three-dimensional model software, calibrate temperature points on the three-dimensional model data, obtain the temperature data of the target box-type substation, and perform heat dissipation treatment on the inside of the target box-type substation through the change of the temperature data to prevent faults such as insulation softening and fire caused by overheating, and control the internal temperature of the box-type substation within the normal range. There is a temperature rising process when the internal temperature of the box-type substation is overheated. As long as the internal temperature of the box-type substation is dissipated and cooled during the temperature rising process, it is possible to prevent faults such as insulation softening and fire caused by too high temperature.

[0046] A box-type substation is a device in the power system. The transformer in it is usually used to regulate voltage and current. As the core component of the box-type substation, the transformer is also a component prone to failure. The working state of the transformer can largely reflect the box-type substation. The gas solubility of the transformer is related to the operating state of the box-type substation. Changes in solubility data may reflect certain changes inside the box-type substation, such as temperature rise or material aging. Therefore, continuous monitoring of gas solubility may help prevent failures or evaluate the health status of the equipment.

[0047] Fault prediction for the box-type substation based on gas data and obtaining the fault prediction result can achieve accurate early warning at the initial stage of the fault in the box-type substation. Thus, at the initial stage of the fault, the fault of the box-type substation can be warned and actively processed, and it can be eliminated before the occurrence of a permanent fault, reducing the probability of power outage accidents caused by equipment failures, thereby improving the power supply quality and service quality.

[0048] The first state information includes the first temperature data, the first gas data, and the first control instruction when the target box-type substation has no fault;

[0049] The second state information includes the second temperature data, the second gas data, and the second control instruction when the target box-type substation has a fault.

[0050] The sampling frequency of gas solubility data can be set according to actual needs to meet the continuous monitoring requirements (such as once per second or sampling at the minute level).

[0051] When there is local overheating in the winding or iron core (such as poor contact, overload, cooling system failure, etc.), overheating faults are likely to occur in the box-type substation. When the fault occurs, methane (CH 4 ), and ethylene (C 2 H 4 ) dominate, and a small amount of ethane (C 2 H 6 ) appears. If C 2 H 4 / C 2 H 6 > 3, it may be severe overheating; when there are bubbles or cracks inside the insulating material, resulting in low-energy discharges, partial discharge faults occur in the box-type substation. When the fault occurs, high-energy electrons crack hydrocarbons or moisture to generate hydrogen (H 2 ), and the proportion of H 2 in the box-type substation increases significantly (>100 ppm), and a small amount of methane (CH 4 ) is generated along with H 2 ; when high-energy discharges are caused by winding short circuits, insulation breakdowns, or poor contacts, arc discharge faults occur in the box-type substation, and acetylene (C 2 H2 )A sudden increase in concentration (>10 ppm) can be a clear sign of arc discharge (pyrolysis products). Hydrogen will be generated along with arc discharge, and H 2 / C 2 H 2 < 0.1; When insulating paper / epoxy resin ages, moisture invades, or oxidative decomposition occurs, the insulating materials in the box-type substation age or become damp. At this time, carbon monoxide (CO) can be used as a sign of the aging of solid insulating materials (such as paper and epoxy resin), and carbon dioxide (CO 2 ), as a product of the oxidation or moisture absorption of the insulating material at the same time, the CO / CO 2 ratio in the box-type substation increases (>0.3), and a small amount of H 2 .

[0052] Therefore, the first gas in the box-type substation can include gases such as methane, ethylene, ethane, acetylene, hydrogen, carbon monoxide, and carbon dioxide.

[0053] Preferably, as Figure 1 shown, the control module 20 includes a temperature acquisition unit 21, a gas acquisition unit 22, a prediction unit 23, and a control unit 24;

[0054] The temperature acquisition unit 21 is used to continuously acquire the temperature field data of the target box-type substation, calibrate the actual detection points inside and on the outer surface of the target box-type substation, record the positions of the actual detection points, calibrate temperature points corresponding to the positions of the actual detection points on the three-dimensional model data, set temperature sensors at the actual detection points, use the synchronous signal transmitter to send detection instructions to each temperature sensor through the temperature sensor, each temperature sensor receives the detection instructions, feeds back the current temperature signal, and records the feedback time and the position of the temperature sensor in real time, corresponds each temperature signal to the temperature point, and uses different color values to represent different temperatures to form the temperature field data of the target box-type substation;

[0055] The gas acquisition unit 22 is used to continuously acquire the solubility data of the first gas in the target box-type substation to obtain the first gas solubility sequence;

[0056] The prediction unit 23 is used to obtain the first gas prediction sequence according to the first gas solubility sequence and obtain the fault prediction result of the box-type substation according to the first gas prediction sequence;

[0057] Among them, the first gas prediction sequence can be obtained by predicting the solubility data of the first gas in the short term in the future through prediction models such as the gray prediction model and the linear regression prediction model.

[0058] Predict the operating state of the box-type substation according to the first gas prediction sequence to obtain the fault prediction result of the box-type substation.

[0059] The control module 20 performs fault prediction on the box-type substation by executing a fault prediction method. Specifically, reference can be made to Figure 3 , Figure 3 The fault prediction method provided in Embodiment 1 of the present application is shown in

[0060] S110, continuously collect the solubility data of the first gas in the box-type substation to obtain a first gas solubility sequence.

[0061] The box-type substation is a device in the power system and is usually used to regulate voltage and current. The gas solubility in the box-type substation is related to the operating state of the device. The change in solubility data may reflect certain changes inside the device, such as temperature rise or material aging. Therefore, continuously monitoring the gas solubility may help prevent faults or evaluate the device health status.

[0062] The sampling frequency of the gas solubility data can be set according to actual needs to meet the continuous monitoring requirements (such as once per second or sampling at the minute level).

[0063] When local overheating occurs in the winding or iron core (such as poor contact, overload, cooling system failure, etc.), overheating faults are likely to occur in the box-type substation. When a fault occurs, methane (CH 4 ), and ethylene (C 2 H 4 ) dominate, and a small amount of ethane (C 2 H 6 ) appears. If C 2 H 4 / C 2 H 6 > 3, it may be severe overheating; when there are bubbles or cracks inside the insulating material, resulting in low-energy discharge, partial discharge faults occur in the box-type substation. When a fault occurs, high-energy electrons crack hydrocarbons or moisture to generate hydrogen (H 2 ), and the proportion of H 2 in the box-type substation increases significantly (>100 ppm), and a small amount of methane (CH 4 ) is generated along with H 2 ; when high-energy discharge is caused by winding short circuit, insulation breakdown or poor contact, arc discharge faults occur in the box-type substation. A sudden increase in the concentration of acetylene (C 2 H 2 ) (>10 ppm) can be used as a clear sign of arc discharge (high-temperature decomposition product). Hydrogen will be generated along with arc discharge, and H 2 / C 2 H 2< 0.1; When the insulating paper / epoxy resin ages, moisture invades, or undergoes oxidative decomposition, the insulating materials in the box-type substation age or get damp. At this time, carbon monoxide (CO) can be used as a sign of the aging of solid insulating materials (such as paper and epoxy resin), and carbon dioxide (CO 2 ) is simultaneously a product of the oxidation or moisture absorption of the insulating material. When the CO / CO 2 ratio in the box-type substation increases (>0.3), it may be accompanied by a small amount of H 2 .

[0064] Therefore, the first gas in the box-type substation can include gases such as methane, ethylene, ethane, acetylene, hydrogen, carbon monoxide, and carbon dioxide.

[0065] S120. Predict the solubility data of the first gas according to the solubility sequence of the first gas to obtain the first gas prediction sequence.

[0066] Among them, prediction models such as the gray prediction model and the linear regression prediction model can be used to predict the solubility data of the first gas in the short term in the future to obtain the first gas prediction sequence.

[0067] S130. Predict the operating state of the box-type substation according to the first gas prediction sequence to obtain the fault prediction result of the box-type substation.

[0068] Among them, a fault prediction can be performed through a prediction model. For example, the LSTM model in the paper with the article number "1009 -2552(2024)07-0076 -08".

[0069] After obtaining the fault prediction result, if the possibility of the box-type substation having a fault in the future is predicted to be relatively high, an alarm can be issued to prompt the staff to conduct a fault investigation and perform repairs in a timely manner.

[0070] In this application, before predicting the operating state of the box-type substation, the solubility data of the first gas is predicted according to the solubility sequence of the first gas to obtain the first gas prediction sequence, and the operating state of the box-type substation is predicted according to the first gas prediction sequence. Compared with directly predicting the operating state of the box-type substation according to the solubility sequence of the first gas, it can amplify the fault characteristics of the box-type substation at the data level to accurately predict in the early stage of the fault of the box-type substation.

[0071] Reference can be made to Figure 4 , Figure 4 which shows the fault prediction method provided in the second embodiment of this application. This fault prediction method includes S210~S250:

[0072] S210. Continuously collect the solubility data of the first gas in the box-type substation to obtain the first gas solubility sequence.

[0073] S220. Predict the solubility data of the first gas based on the first gas solubility sequence to obtain the first gas prediction sequence.

[0074] Among them, the execution of S210 can refer to the execution of S110 in Embodiment 1, and the execution of S220 can refer to the execution of S120 in Embodiment 1, which will not be elaborated here.

[0075] S230. Determine whether the prediction error of the first gas prediction sequence exceeds the preset error threshold; if the prediction error exceeds the preset error threshold, execute S240; if the prediction error does not exceed the preset error threshold, execute S250.

[0076] If the fault development of the box-type substation is slow (such as local overheating), the gas generation rate is relatively stable, and the dissolved gas numerical sequence will show a steady upward trend; if the fault is sudden and severe (such as arc discharge), the gas generation rate will increase rapidly, and the dissolved gas numerical sequence will show a sharp rise.

[0077] Therefore, considering that the fault of the box-type substation may occur instantaneously and the data changes are obvious, the prediction error of the first gas prediction sequence by the prediction model can be used to determine whether the fault characteristics are obvious enough not to require amplification.

[0078] If the prediction error of the first gas prediction sequence exceeds a certain range, it is not necessary to amplify the fault characteristics, and the fault detection can be directly performed based on the original first gas solubility sequence, that is, execute S240. If the prediction error of the first gas prediction sequence does not exceed a certain range, it still indicates that the fault characteristics are not significantly presented, and the fault detection needs to be performed based on the predicted first gas solubility sequence to amplify the fault characteristics in the original first gas solubility sequence.

[0079] Among them, the preset error threshold can be set according to actual needs. For example, determine whether the credibility of the prediction of the first gas prediction sequence exceeds 0.7. If the credibility exceeds 0.7, it can be considered that the prediction error does not exceed the preset error threshold. If the credibility is lower than 0.7, it can be considered that the prediction error exceeds the preset error threshold.

[0080] S240. Predict the operating state of the box-type substation based on the first gas solubility sequence to obtain the fault prediction result.

[0081] S250. Predict the operating state of the box-type substation based on the first gas prediction sequence to obtain the fault prediction result.

[0082] This application determines whether the fault characteristics in the box-type substation are obvious enough by judging whether the prediction error of the first gas prediction sequence exceeds a preset error threshold. If the fault characteristics are obvious enough, the operation state of the box-type substation is predicted based on the original first gas solubility sequence to obtain a fault prediction result. If the fault characteristics are not obvious, the operation state of the box-type substation is predicted based on the predicted first gas prediction sequence to obtain a fault prediction result, thereby improving the accuracy of predicting the box-type substation.

[0083] Reference can be made to Figure 5 , Figure 5 in which the fault prediction method provided in Embodiment 3 of this application is shown. The fault prediction method includes S310 to S360:

[0084] S310. Continuously collect the solubility data of the first gas in the box-type substation to obtain the first gas solubility sequence.

[0085] Among them, S310 is executed with reference to S310 in Embodiment 2, S330 can be executed with reference to S220 in Embodiment 2, and S340 can be executed with reference to S230 in Embodiment 2, which will not be elaborated here.

[0086] S320. Continuously collect the solubility data of the second gas in the box-type substation to obtain the second gas solubility sequence, where the generation time of at least part of the second gas is later than that of the first gas;

[0087] When a fault occurs in the box-type substation, dissolved gas analysis (DGA) is a commonly used diagnostic method. By analyzing the components of the gases dissolved in the oil and their concentration changes, the fault type and severity inside the box-type substation can be judged. The following is the typical order of gas generation and its corresponding fault types when a fault occurs inside the box-type substation:

[0088] Hydrogen is one of the earliest generated gases, usually produced during low-energy discharge or local overheating. It is an early product of the decomposition of insulating oil and is commonly found in cases of partial discharge or slight overheating. Methane is a product of the decomposition of insulating oil at relatively low temperatures (usually between 150°C and 300°C). It usually appears together with hydrogen, indicating slight overheating or partial discharge inside the box-type substation. Ethane is produced at a slightly higher temperature than methane, usually between 300°C and 500°C. Its appearance indicates an increase in the degree of overheating inside the box-type substation. Ethylene is produced at a higher temperature, usually above 500°C. Its appearance indicates the presence of relatively serious thermal faults inside the box-type substation, such as winding overheating or local high temperature. Acetylene is a typical product of high-temperature arc discharge, usually produced at around 1000°C. Its appearance usually indicates the presence of serious arc discharge faults inside the box-type substation, such as winding short circuit or severe partial discharge. The production of carbon monoxide and carbon dioxide is usually related to the thermal decomposition of insulating materials, especially cellulose-based insulating materials. Their appearance may indicate overheating or partial discharge inside the box-type substation, leading to the aging or decomposition of the insulating materials.

[0089] During the fault process of the box-type substation, the order of gas generation is usually as follows: hydrogen (H 2 2) → methane (CH 4 4) → ethane (C 2 2 6 H 2 6) → ethylene (C 4 2 2 H 2 4) → acetylene (C 2 2

[0090] Therefore, preferably, the first gas includes at least hydrogen and methane; the second gas includes at least ethane, ethylene, and acetylene; further, considering the fault types comprehensively, the first gas also includes carbon monoxide and carbon dioxide.

[0091] S330, Predict the solubility data of the first gas according to the solubility sequence of the first gas to obtain the predicted sequence of the first gas.

[0092] S340, Determine whether the prediction error of the predicted sequence of the first gas exceeds the preset error threshold; if the prediction error exceeds the preset error threshold, execute S350; if the prediction error does not exceed the preset error threshold, execute S360.

[0093] S350, Predict the operating state of the box-type substation according to the solubility sequence of the first gas and the solubility sequence of the second gas to obtain the fault prediction result.

[0094] S360 predicts the solubility data of the second gas according to the first gas prediction sequence and the second gas solubility sequence to obtain a second gas prediction sequence, and predicts the operating state of the box-type substation according to the first gas prediction sequence and the second gas prediction sequence to obtain a fault prediction result.

[0095] Optionally, the second gas prediction sequence can be predicted through the neural network model in the Chinese patent with the publication number "CN116204794A", or the second gas prediction sequence can also be predicted through multiple linear regression.

[0096] In the analysis of the fault gases in the box-type substation, the generation of gases often has stages and dependencies. According to the chemical reaction path of the thermal decomposition of the insulating material, the first gases (such as hydrogen and methane) are usually generated in the initial stage of the fault, while the second gases (such as ethane, ethylene, and acetylene) are gradually generated as the fault energy or temperature increases, and their formation may depend on the accumulation or further cracking of the first gases. For example, ethane is generated by the further cracking or recombination of methane.

[0097] If the fault occurs instantaneously, the first gas and the second gas are usually generated in a relatively short time. Therefore, predicting the solubility data of the second gas according to the first gas prediction sequence and the second gas solubility sequence to obtain a second gas prediction sequence is more accurate than predicting the second gas prediction sequence only based on the second gas solubility sequence.

[0098] S360 further includes:

[0099] S361, determining whether the second gas solubility sequence deviates from the preset sequence by more than the preset range; if the second gas solubility sequence deviates from the preset sequence by more than the preset range, then execute S362; if the second gas solubility sequence does not deviate from the preset sequence by more than the preset range, then execute S363.

[0100] Among them, the increase in the content of the second gas (such as ethane, ethylene, and acetylene) may indicate the sudden occurrence of fault characteristics in the box-type substation. Therefore, the two conditions of the content of the second gas and whether the prediction error of the first gas prediction sequence exceeds the preset error threshold can be combined to determine whether the fault characteristics in the box-type substation are obvious enough to improve the accuracy of the judgment.

[0101] S362, predicting the operating state of the box-type substation according to the first gas solubility sequence and the second gas solubility sequence to obtain a fault prediction result.

[0102] If the content of the second gas is relatively large and the prediction error of the first gas prediction sequence does not exceed the preset error threshold, it indicates that a relatively large amount of the second gas has accumulated in the box-type substation. At this time, the fault characteristics are relatively obvious, and the operating state of the box-type substation can be directly predicted based on the first gas solubility sequence and the second gas solubility sequence to obtain a fault prediction result, so as to improve the accuracy of fault prediction and shorten the response time of fault warning.

[0103] S363. Predict the solubility data of the second gas according to the first gas prediction sequence and the second gas solubility sequence to obtain a second gas prediction sequence, and predict the operating state of the box-type substation according to the first gas prediction sequence and the second gas prediction sequence to obtain a fault prediction result.

[0104] If the content of the second gas is relatively small and the prediction error of the first gas prediction sequence does not exceed the preset error threshold, it indicates that no fault has occurred in the box-type substation or the fault is in the early stage. Therefore, the second gas solubility sequence can be predicted to amplify the fault characteristics in the second gas solubility sequence through the second gas prediction sequence, so as to achieve accurate early warning of the fault.

[0105] Through the judgment of S340, it is possible to preliminarily judge whether the fault characteristics are obvious enough while ensuring the reliability of the first gas prediction sequence. Through the judgment of S361, it is possible to more accurately judge whether the fault characteristics are obvious enough. When the first gas prediction sequence is reliable, through S362, when the fault characteristics are obvious enough, a fast and accurate warning is issued. Through S363, when the fault characteristics are relatively fuzzy, the second gas solubility sequence is predicted to amplify the fault characteristics in the second gas solubility sequence, so as to achieve accurate early warning of the fault in the initial stage.

[0106] The control instruction information includes a cooling fan control instruction, a wireless communication module control instruction, a lighting module control instruction, an LED liquid crystal display module control instruction, a switching on / off protection module control instruction, and a switch state control instruction;

[0107] In the control unit 24, the temperature field data and the cooling fan control instruction are pre-corresponded one by one to establish a temperature instruction set. According to the real-time collected temperature field data, the corresponding cooling fan control instruction is obtained from the temperature instruction set and sent to the cooling fan. After receiving the cooling fan control instruction, the cooling fan starts and adjusts to the corresponding wind force to dissipate heat inside the box-type substation.

[0108] By analyzing the changes in the collected temperature data and constructing the temperature field data collected in real time, comparing the temperature of each temperature point in the real-time collected temperature field data with the temperature of the corresponding temperature point in the temperature field data is conducive to more accurately grasping and judging the change of the internal temperature data of the box-type substation. During the internal temperature rise process of the box-type substation, cooling the internal temperature of the box-type substation can prevent faults such as insulation softening and fire caused by excessive temperature.

[0109] The first state information includes the wireless communication module control instruction, lighting module control instruction, LED liquid crystal display module control instruction, switching protection module control instruction, and switch state control instruction when the target box-type substation has no fault.

[0110] The second state information includes the wireless communication module control instruction, lighting module control instruction, LED liquid crystal display module control instruction, switching protection module control instruction, and switch state control instruction when the target box-type substation has a fault.

[0111] According to the fault prediction results and the first and second corresponding relationships respectively, obtain the corresponding wireless communication module control instruction, lighting module control instruction, LED liquid crystal display module control instruction, switching protection module control instruction, and switch state control instruction, and send them to the corresponding communication module, lighting module, LED liquid crystal display module, switching protection module, and switch. Through the communication module, warning information can be sent to promptly inform the operation and maintenance personnel. By turning on the lighting module, it is convenient for the operation and maintenance personnel to observe the internal situation of the box-type substation. The LED liquid crystal display module is used to display the current parameter information of the box-type substation. By sending the switching protection module control instruction, automatic switching can be realized, and the switch can be tripped in time in case of a short-circuit fault to avoid major faults. By controlling the switch to open and close, it is convenient to cut off the power supply in case of a fault, so as to realize the automatic control of the box-type substation according to the first state information and the second state information of the box-type substation.

[0112] By predicting the faults of the box-type substation based on the gas data and obtaining the fault prediction results, accurate early warning can be realized at the initial stage of the box-type substation's faults. Therefore, at the initial stage of the fault, the faults of the box-type substation can be warned and actively processed, and eliminated before the occurrence of permanent faults, reducing the probability of power outage accidents caused by equipment faults, thereby improving the power supply quality and service quality.

[0113] The embodiment of the present application provides a computer-readable storage medium, and the storage medium stores a computer program, which when executed by a processor, implements the steps in any one of the above embodiments of the box-type substation.

[0114] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system or a computer program product. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program code. Among them, the storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. These computer program instructions can also be stored in a computer-readable memory capable of guiding a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured article including an instruction device, and the instruction device implements the functions specified in one process Figure 1 one process or multiple processes and / or boxes Figure 1 functions specified in one box or multiple boxes.

[0115] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An integrated control system for a box-type substation, characterized in that: include: A monitoring module, used to obtain first state information of the target box-type substation when there is no fault, and second state information of the target box-type substation when there is a fault, according to the three-dimensional model data, temperature data, gas data and control instructions of the target box-type substation; a control module, configured to obtain a fault prediction result according to the three-dimensional model data, the current temperature data, and the gas data, construct a first corresponding relationship and a second corresponding relationship between the fault prediction result and the first state information and the second state information, respectively, and obtain control instruction information according to the first corresponding relationship and the second corresponding relationship; The control module includes a gas collection unit and a prediction unit, wherein: The gas collection unit is used to continuously collect solubility data of a first gas in a target box-type substation to obtain a first gas solubility sequence, and continuously collect solubility data of a second gas in the target box-type substation to obtain a second gas solubility sequence, wherein at least part of the second gas is generated later than the first gas; The prediction unit is used to: Predicting the solubility data of the first gas according to the first gas solubility sequence to obtain a first gas prediction sequence, and determining whether a prediction error of the first gas prediction sequence exceeds a preset error threshold; If the prediction error exceeds the preset error threshold, predicting the operating state of the target box-type substation according to the first gas solubility sequence and the second gas solubility sequence to obtain the fault prediction result; If the prediction error does not exceed the preset error threshold, the operating state of the target box-type substation is predicted according to the first gas prediction sequence to obtain the fault prediction result.

2. The integrated control system for a box-type substation according to claim 1, characterized in that: The first state information includes first temperature data, first gas data and first control instruction when the target box-type substation has no fault; The second status information includes second temperature data, second gas data and second control instructions when the target box-type substation fails.

3. The integrated control system for a box-type substation according to claim 2, characterized in that: The control module includes a temperature acquisition unit and a control unit; The temperature acquisition unit is used to continuously collect temperature field data of the target box-type substation, calibrate actual detection points inside and outside the target box-type substation, and record the positions of the actual detection points, calibrate temperature points corresponding to the positions of the actual detection points on the three-dimensional model data, set temperature sensors at the actual detection points, send detection instructions to each temperature sensor through the temperature sensor, use a synchronous signal transmitter, each temperature sensor receives the detection instruction, feeds back the current temperature signal, and records the feedback time and the position of the temperature sensor in real time, correspond the various temperature signals to the temperature points, and use different color values ​​to represent different temperatures, so as to form the temperature field data of the target box-type substation; The control unit is used to construct a first corresponding relationship and a second corresponding relationship between the fault prediction result and the first state information and the second state information respectively, and obtain control instruction information according to the first corresponding relationship and the second corresponding relationship.

4. The integrated control system for a box-type substation according to claim 3, characterized in that: The prediction unit further includes: if the prediction error does not exceed the preset error threshold, predicting the operating state of the target box-type substation according to the first gas prediction sequence to obtain the fault prediction result, including: If the prediction error does not exceed the preset error threshold, the solubility data of the second gas is predicted according to the first gas prediction sequence and the second gas solubility sequence to obtain the second gas prediction sequence, and the operating status of the target box-type substation is predicted according to the first gas prediction sequence and the second gas prediction sequence to obtain the fault prediction result.

5. The integrated control system for a box-type substation according to claim 4, characterized in that: The prediction unit further includes: if the prediction error does not exceed the preset error threshold, predicting the solubility data of the second gas according to the first gas prediction sequence and the second gas solubility sequence to obtain a second gas prediction sequence, and predicting the operating state of the target box-type substation according to the first gas prediction sequence and the second gas prediction sequence to obtain the fault prediction result, including: If the prediction error does not exceed the preset error threshold, determining whether the second gas solubility sequence deviates from the preset sequence by more than a preset range; If the second gas solubility sequence deviates from the preset sequence by more than a preset range, predicting the operating state of the target box-type substation according to the first gas solubility sequence and the second gas solubility sequence to obtain the fault prediction result; If the second gas solubility sequence deviates from the preset sequence within a preset range, the solubility data of the second gas is predicted according to the first gas prediction sequence and the second gas solubility sequence to obtain the second gas prediction sequence, and the operating status of the target box-type substation is predicted according to the first gas prediction sequence and the second gas prediction sequence to obtain the fault prediction result, which includes no fault and fault.

6. The integrated control system for a box-type substation according to claim 5, characterized in that: The first gas includes at least hydrogen, methane, carbon monoxide and carbon dioxide; the second gas includes at least ethane, ethylene and acetylene.

7. The integrated control system for a box-type substation according to claim 6, characterized in that: The control instruction information includes cooling fan control instructions, wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, opening and closing protection module control instructions and switch state control instructions; The control unit preliminarily matches the temperature field data with the cooling fan control instructions one by one, establishes a temperature instruction set, obtains the corresponding cooling fan control instructions from the temperature instruction set according to the temperature field data collected in real time, and sends them to the cooling fan.

8. The integrated control system for a box-type substation according to claim 7, characterized in that: The first status information includes wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, opening and closing protection module control instructions and switch status control instructions when the target box-type substation is fault-free; The second status information includes wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, opening and closing protection module control instructions and switch status control instructions when the target box-type substation has a fault; According to the fault prediction result and the first corresponding relationship and the second corresponding relationship respectively, the corresponding wireless communication module control instructions, lighting module control instructions, LED liquid crystal display module control instructions, opening and closing protection module control instructions and switch state control instructions are obtained and sent to the corresponding communication module, lighting module, LED liquid crystal display module, opening and closing protection module and switch.

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