Method and system for monitoring operation state of box-type substation

Abstract

The invention relates to the technical field of box-type substations, and particularly discloses a method and a system for monitoring the running state of a box-type substation. According to the invention, the box-type substation is divided into an overload current monitoring mode and an overload voltage monitoring mode for monitoring through rated load current information and safety voltage information, overload current and voltage parameters serve as overload voltage reminding data, and then the overload current and voltage parameters are input into a state estimation model for training. According to the method, the state estimation value is obtained, and the abnormal state of the box-type substation is monitored and intervened in advance according to the state estimation value, so that the overload problem of the box-type substation caused by excessive power consumption can be pre-warned in advance according to the recorded historical data, and the overload of the box-type substation is intervened and processed in advance according to the pre-warning. Therefore, the box-type substation has an overload fault.

Description

Technical Field

[0001] The present invention relates to the technical field of box-type substations, and in particular to a method and system for monitoring the operating state of a box-type substation. Background Art

[0002] A box-type substation, also known as a prefabricated substation or a prefabricated transformer substation, is a device that transforms high and low voltages. It is also an outdoor mobile power transformation and distribution device. This substation organically combines functions such as transformer step-down and low-voltage power distribution, and is installed in a moisture-proof, rust-proof, dust-proof, mouse-proof, fire-proof, anti-theft, heat-insulating, fully enclosed, and movable steel structure box body, which is particularly suitable for urban network construction and transformation;

[0003] With the change of seasons, during the use of box-type substations in summer, due to the increase of cooling equipment such as air conditioners, the electricity consumption during lunch breaks and other rest periods increases sharply, and the increased electricity consumption will cause the box-type substation to be overloaded. Therefore, a method and system for monitoring the operating state of a box-type substation are needed to monitor the operating state of the box-type substation to prevent overloading problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a method and system for monitoring the operating state of a box-type substation to solve the technical problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A method for monitoring the operating state of a box-type substation includes:

[0007] Obtain the operating state information of the box-type substation, where the operating state information includes rated load current information and safety voltage information;

[0008] Determine the monitoring mode of the box-type substation according to the operating state information, where the monitoring mode includes an overcurrent monitoring mode and an overvoltage monitoring mode;

[0009] When in the overcurrent monitoring mode, obtain the first rated current corresponding to the box-type substation, and determine whether the first rated current exceeds a preset current;

[0010] If it exceeds, calculate the exceeded first overcurrent according to the first rated current and the preset current;

[0011] Divide the first overcurrent into multiple shunt stages, set up corresponding standby transmission cables for each shunt stage, and define the current state corresponding to the shunt stage as the first operating state;

[0012] When in the overload voltage monitoring mode, obtain the first voltage corresponding to the box-type substation, and determine whether the first voltage exceeds the preset voltage;

[0013] If it exceeds, perform anomaly detection on multiple cables during the transmission process of the box-type substation to obtain overload voltage cables and normal voltage cables;

[0014] Close the connection ends of the overload voltage cables to obtain closing information, and start the capacitor to readjust the voltage according to the closing information, and define the state corresponding to the capacitor readjusting the voltage as the second operating state;

[0015] Input the first operating state and the second operating state into the state prediction model for training to obtain a state prediction value, and perform early monitoring and intervention on the abnormal state of the box-type substation according to the state prediction value.

[0016] Preferably, the step of obtaining the operating state information of the box-type substation includes:

[0017] Obtain the working duration of the box-type substation, convert the rated capacity of the transformer proportionally according to the working duration of the box-type substation, extract the characteristic coefficient of the rated capacity, and obtain the rated capacity loss characteristic coefficient;

[0018] Obtain the effective voltage value and the effective current value of the box-type substation, and calculate the apparent power according to the effective voltage value and the effective current value;

[0019] Obtain the output voltage of the box-type substation;

[0020] Calculate the load current according to the rated capacity loss characteristic coefficient, the apparent power and the output voltage, where the calculation formula is:

[0021]

[0022] I is the load current, P is the apparent power, W is the rated capacity loss characteristic coefficient, and V is the output voltage of the box-type substation;

[0023] Define the current information corresponding to the load current as the rated load current information;

[0024] Obtain the aging factor of the box-type substation according to the rated capacity loss characteristic coefficient;

[0025] Calculate the apparent voltage according to the output voltage and the aging factor, and define the voltage information corresponding to the apparent voltage as the safety voltage information.

[0026] Preferably, the step of determining the monitoring mode of the box-type substation according to the operating state information includes:

[0027] Obtain the operating current of the box-type substation and determine whether the operating current exceeds the rated current;

[0028] If it exceeds, extract the rated load current information according to the operating current, and generate abnormal current information according to the rated load current information;

[0029] Determine that the monitoring of the box-type substation is in the overload current monitoring mode according to the abnormal current information;

[0030] Obtain the operating voltage of the box-type substation and determine whether the operating voltage exceeds the rated voltage;

[0031] If it exceeds, extract the rated load voltage information according to the operating voltage, and generate abnormal voltage information according to the rated load voltage information;

[0032] Determine that the monitoring of the box-type substation is in the overload voltage monitoring mode according to the abnormal voltage information.

[0033] Preferably, the step of defining the current state corresponding to the shunt stage as the first operating state includes:

[0034] Shunt the first overload current according to the standby transmission cable to obtain a shunt current. Each standby transmission cable is preset with a corresponding passing threshold, and the next standby transmission cable is started to work after the previous standby transmission cable is overloaded;

[0035] The box-type substation operates normally according to the shunt current, and defines the normal current operation as the first operating state.

[0036] Preferably, the step of inputting the first operating state and the second operating state into the state prediction model for training to obtain a state prediction value includes:

[0037] Extract the current corresponding to the shunt stage multiple times to obtain multiple current values;

[0038] Extract the voltage after readjusting the voltage of the capacitor multiple times to obtain multiple voltage values;

[0039] Input the multiple current values and multiple voltage values as training samples into the state prediction model, and output the state prediction value. The function of the state prediction model is:

[0040]

[0041] Y is the state prediction value, A i is the current value after extracting the current corresponding to the shunt stage multiple times, B iIt is the voltage value obtained by extracting the voltage after readjusting the voltage of the capacitor multiple times. ε is the deviation coefficient, and i is the number of current and voltage, where i = 1, 2, 3... n.

[0042] Preferably, the step of pre - monitoring and intervening in the abnormal state of the box - type substation according to the state prediction value includes:

[0043] Obtain the abnormal current and abnormal voltage corresponding to the state prediction value, and mark the abnormal current and abnormal voltage to obtain abnormal current marking information and abnormal voltage marking information;

[0044] Generate current early - warning information and voltage early - warning information according to the abnormal current marking information and abnormal voltage marking information respectively;

[0045] According to the current early - warning information, perform early warning and maintenance processing on the current problems that will occur during the operation of the box - type substation;

[0046] According to the voltage early - warning information, perform early warning and maintenance processing on the voltage problems that will occur during the operation of the box - type substation.

[0047] This application also provides an operating state monitoring system for a box - type substation, including:

[0048] A first acquisition module for acquiring the operating state information of the box - type substation, where the operating state information includes rated load current information and safety voltage information;

[0049] A first determination module for determining the monitoring mode of the box - type substation according to the operating state information, where the monitoring mode includes an overload current monitoring mode and an overload voltage monitoring mode;

[0050] A second judgment module for, when in the overload current monitoring mode, acquiring the first rated current corresponding to the box - type substation and judging whether the first rated current exceeds a preset current;

[0051] If it exceeds, calculate the exceeded first overload current according to the first rated current and the preset current;

[0052] A first shunt module for dividing the first overload current into multiple shunt stages, setting a corresponding standby transmission cable for each shunt stage, and defining the current state corresponding to the shunt stage as the first operating state;

[0053] A second judgment module for, when in the overload voltage monitoring mode, acquiring the first voltage corresponding to the box - type substation and judging whether the first voltage exceeds a preset voltage;

[0054] If it exceeds, perform anomaly detection on multiple cables during the transmission of the box-type substation to obtain overloaded voltage cables and normal voltage cables;

[0055] A first adjustment module, configured to close the connection ends of the overloaded voltage cables to obtain closing information, and start capacitor voltage readjustment according to the closing information, and define the state corresponding to the capacitor voltage readjustment as the second operating state;

[0056] A first training module, configured to input the first operating state and the second operating state into a state prediction model for training to obtain a state prediction value, and perform early monitoring and intervention on the abnormal state of the box-type substation according to the state prediction value.

[0057] Preferably, the first training module includes:

[0058] A first extraction unit, configured to extract the current corresponding to the shunt stage multiple times to obtain multiple current values;

[0059] A second extraction unit, configured to extract the voltage after the capacitor voltage readjustment multiple times to obtain multiple voltage values;

[0060] A first prediction unit, configured to input the multiple current values and multiple voltage values as training samples into a state prediction model, and output a state prediction value, where the function of the state prediction model is:

[0061]

[0062] Y is the state prediction value, A i is the current value after extracting the current corresponding to the shunt stage multiple times, B i is the voltage value after extracting the voltage after the capacitor voltage readjustment multiple times, ε is the deviation coefficient, and i is the number of the current and voltage, where i = 1, 2, 3... n.

[0063] This application also provides a computer device, including a memory and a processor, where the memory stores a computer program, and when the processor executes the computer program, the steps of the above method are implemented.

[0064] This application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0065] This application also provides a computer device, including a memory and a processor, where the memory stores a computer program, and when the processor executes the computer program, the steps of the above method are implemented.

[0066] The present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above method are implemented.

[0067] The beneficial effects of the present application are as follows: The present application first obtains the operation status information of the box-type substation, where the operation status information includes rated load current information and safety voltage information. Then, according to the operation status information, the monitoring mode of the box-type substation is determined, where the monitoring mode includes an overcurrent monitoring mode and an overvoltage monitoring mode. In this way, the problems of overcurrent and overvoltage occurring in the box-type substation can be quickly classified in advance through the rated load current information and the safety voltage information, and then the specific problems generated are divided into the corresponding overcurrent monitoring mode and overvoltage monitoring mode for independent monitoring. When in the overcurrent monitoring mode, the first rated current corresponding to the box-type substation is obtained, and it is determined whether the first rated current exceeds the preset current. If it exceeds, the exceeded first overcurrent is calculated according to the first rated current and the preset current. The first overcurrent is divided into multiple shunt stages, and a corresponding standby transmission cable is set up for each shunt stage, and the current state corresponding to the shunt stage is defined as the first operation state. In this way, the box-type substation with overcurrent can be monitored and processed, and the current state corresponding to the shunt stage is recorded. Furthermore, the current state corresponding to the shunt stage can serve as reminder data for subsequent overloading of the box-type substation, so that the overloading of the box-type substation caused by current during power consumption can be reduced through the reminder data after overloading. When in the overvoltage monitoring mode, the first voltage corresponding to the box-type substation is obtained, and it is determined whether the first voltage exceeds the preset voltage. If it exceeds, abnormal detection is performed on multiple cables during the transmission process of the box-type substation to obtain overvoltage cables and normal voltage cables. The connection ends of the overvoltage cables are closed to obtain closing information, and the voltage is readjusted by starting a capacitor according to the closing information. The state corresponding to the capacitor readjusting the voltage is defined as the second operation state. In this way, the problem of overvoltage in the box-type substation can be monitored and processed separately, and emergency treatment is performed on the box-type substation with overvoltage problems. The overvoltage generated during the emergency treatment process is recorded and serves as overvoltage reminder data. Then, the first operation state and the second operation state are input into a state prediction model for training to obtain a state prediction value, and the abnormal state of the box-type substation is monitored and intervened in advance according to the state prediction value. Furthermore, the overloading problem of the box-type substation caused by excessive power consumption can be warned in advance through the recorded historical data, and the overloading of the box-type substation can be intervened and processed in advance according to the warning, so as to prevent the box-type substation from having an overload fault. Description of the Drawings

[0068] Figure 1Schematic diagram of the method flow according to an embodiment of the present application.

[0069] Figure 2 Schematic diagram of the system structure according to an embodiment of the present application.

[0070] Figure 3 Schematic diagram of the internal structure of a computer device according to an embodiment of the present application.

[0071] The realization of the purpose of the present application, functional features and advantages will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0072] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0073] As Figures 1-3 shown, the present application provides a method and system for monitoring the operating state of a box-type substation, including:

[0074] S1. Obtain the operating state information of the box-type substation, where the operating state information includes rated load current information and safety voltage information;

[0075] S2. Determine the monitoring mode of the box-type substation according to the operating state information, where the monitoring mode includes an overload current monitoring mode and an overload voltage monitoring mode;

[0076] S3. When in the overload current monitoring mode, obtain the first rated current corresponding to the box-type substation and determine whether the first rated current exceeds a preset current;

[0077] If it exceeds, calculate the exceeded first overload current according to the first rated current and the preset current;

[0078] S4. Divide the first overload current into multiple shunt stages, set up corresponding standby transmission cables for each shunt stage, and define the current state corresponding to the shunt stage as the first operating state;

[0079] S5. When in the overload voltage monitoring mode, obtain the first voltage corresponding to the box-type substation and determine whether the first voltage exceeds a preset voltage;

[0080] If it exceeds, perform anomaly detection on multiple cables during the transmission of the box-type substation to obtain overload voltage cables and normal voltage cables;

[0081] S6. Close the connection ends of the overload voltage cables to obtain closing information, and start a capacitor to readjust the voltage according to the closing information, and define the state corresponding to the capacitor readjusting the voltage as the second operating state;

[0082] S7. Train by inputting the first operating state and the second operating state into the state prediction model to obtain a state prediction value, and perform early monitoring and intervention on the abnormal state of the box-type substation according to the state prediction value.

[0083] As described in the above steps S1 - S7, with the change of seasons, during the use of the box - type substation in summer, due to the increase in cooling equipment such as air conditioners, the electricity consumption during rest periods such as noon increases sharply. The increased electricity consumption may cause the box - type substation to be overloaded. Based on this, this application first obtains the operating status information of the box - type substation. Among them, the operating status information includes rated load current information and safety voltage information. Then, according to the operating status information, the monitoring mode of the box - type substation is determined. The monitoring mode includes over - current monitoring mode and over - voltage monitoring mode. In this way, through the rated load current information and safety voltage information, the problems of over - current and over - voltage occurring in the box - type substation can be quickly classified in advance, and then the specific problems generated are assigned to the corresponding over - current monitoring mode and over - voltage monitoring mode for independent monitoring. When in the over - current monitoring mode, the first rated current corresponding to the box - type substation is obtained, and it is determined whether the first rated current exceeds the preset current. If it exceeds, the exceeded first over - current is calculated based on the first rated current and the preset current. The first over - current is divided into multiple shunt stages, and a corresponding standby transmission cable is set up for each shunt stage. The current state corresponding to the shunt stage is defined as the first operating state. In this way, the box - type substation with over - current can be monitored and processed, and the current state corresponding to the shunt stage is recorded. Furthermore, through the current state corresponding to the shunt stage, it can serve as reminder data for the subsequent overload of the box - type substation. Thus, through the reminder data after overload, the overload of the box - type substation caused by current during power consumption can be reduced. When in the over - voltage monitoring mode, the first voltage corresponding to the box - type substation is obtained, and it is determined whether the first voltage exceeds the preset voltage. If it exceeds, abnormal detection is performed on multiple cables during the transmission process of the box - type substation to obtain over - voltage cables and normal - voltage cables. The connection ends of the over - voltage cables are closed to obtain closing information, and the capacitor is restarted to adjust the voltage according to the closing information. The state corresponding to the capacitor restarting to adjust the voltage is defined as the second operating state. In this way, the problem of over - voltage occurring in the box - type substation can be monitored and processed separately, and emergency treatment is carried out on the box - type substation in the over - voltage problem. The over - voltage generated during the emergency treatment process is recorded and serves as over - voltage reminder data. Then, the first operating state and the second operating state are input into the state prediction model for training to obtain a state prediction value, and according to the state prediction value, the abnormal state of the box - type substation is monitored and intervened in advance. Furthermore, through the recorded historical data, the overload problem of the box - type substation caused by excessive power consumption can be predicted in advance, and the overload of the box - type substation can be intervened and processed in advance according to the prediction to prevent the box - type substation from having an overload fault.

[0084] In one embodiment, step S1 of obtaining the operating status information of the box - type substation includes:

[0085] S101. Obtain the working duration of the box-type substation, proportionally convert the rated capacity of the transformer according to the working duration of the box-type substation, extract the characteristic coefficient of the rated capacity, and obtain the rated capacity loss characteristic coefficient;

[0086] S102. Obtain the effective voltage value and the effective current value of the box-type substation, and calculate the apparent power according to the effective voltage value and the effective current value;

[0087] S103. Obtain the output voltage of the box-type substation;

[0088] S104. Calculate the load current according to the rated capacity loss characteristic coefficient, the apparent power and the output voltage, where the calculation formula is:

[0089]

[0090] I is the load current, P is the apparent power, W is the rated capacity loss characteristic coefficient, and V is the output voltage of the box-type substation;

[0091] S105. Define the current information corresponding to the load current as the rated load current information;

[0092] S106. Obtain the aging factor of the box-type substation according to the rated capacity loss characteristic coefficient;

[0093] S107. Calculate the apparent voltage according to the output voltage and the aging factor, and define the voltage information corresponding to the apparent voltage as the safety voltage information.

[0094] As described in the above steps S101 - S107, since the existing box-type substations usually use the parameters designed for the equipment as the basis for obtaining the operating status of the current equipment, there will be certain errors in obtaining the parameters of the box-type substation under the current working conditions. Therefore, first obtain the working duration of the box-type substation, proportionally convert the rated capacity of the transformer according to the working duration of the box-type substation, extract the characteristic coefficient of the rated capacity, and obtain the rated capacity loss characteristic coefficient, so as to obtain relatively accurate parameters according to the operating time of the equipment. Then obtain the effective voltage value and the effective current value of the box-type substation, and calculate the apparent power according to the effective voltage value and the effective current value. In this way, calculate the load current according to the rated capacity loss characteristic coefficient, the apparent power and the output voltage, and the calculated load current is closer to the working state of the current equipment. Then obtain the aging factor of the box-type substation according to the rated capacity loss characteristic coefficient, and calculate the apparent voltage according to the output voltage and the aging factor. The apparent voltage is the safety voltage information. Furthermore, through the above acquisition method, the parameters of the current equipment can be obtained more accurately.

[0095] In one embodiment, step S2 of determining the monitoring mode of the box-type substation according to the operating state information includes:

[0096] S201. Obtain the operating current of the box-type substation and determine whether the operating current exceeds the rated current;

[0097] If it exceeds, extract the rated load current information according to the operating current, and generate abnormal current information according to the rated load current information;

[0098] S202. Determine that the monitoring of the box-type substation is in the overload current monitoring mode according to the abnormal current information;

[0099] S203. Obtain the operating voltage of the box-type substation and determine whether the operating voltage exceeds the rated voltage;

[0100] If it exceeds, extract the rated load voltage information according to the operating voltage, and generate abnormal voltage information according to the rated load voltage information;

[0101] S203. Determine that the monitoring of the box-type substation is in the overload voltage monitoring mode according to the abnormal voltage information.

[0102] As described in steps S201 - S203 above, by obtaining the operating current of the box-type substation and determining whether the operating current exceeds the rated current, if it exceeds, extract the rated load current information according to the operating current, and generate abnormal current information according to the rated load current information, and determine that the monitoring of the box-type substation is in the overload current monitoring mode according to the abnormal current information, so as to quickly classify the box-type substation into the overload current monitoring mode for separate monitoring after current abnormality, and then be able to specifically extract, monitor and process the abnormal overload. Then obtain the operating voltage of the box-type substation and determine whether the operating voltage exceeds the rated voltage, if it exceeds, extract the rated load voltage information according to the operating voltage, and generate abnormal voltage information according to the rated load voltage information, and determine that the monitoring of the box-type substation is in the overload voltage monitoring mode according to the abnormal voltage information, so as to quickly classify the box-type substation into the overload voltage monitoring mode for separate monitoring after voltage abnormality, and then be able to specifically extract, monitor and process the abnormal overload.

[0103] In one embodiment, step S4 of defining the current state corresponding to the shunt stage as the first operating state includes:

[0104] S401. Shunt the first overload current according to the standby transmission cable to obtain a shunt current. Each standby transmission cable is preset with a corresponding passing threshold, and the next standby transmission cable is started to work after the previous standby transmission cable is overloaded.

[0105] S402. The box-type substation operates normally according to the shunt current and defines the normal current operation as the first operating state.

[0106] As described in the above steps S401 - S402, when the box-type substation is in the overload voltage monitoring mode, the first overload current is shunted according to the standby transmission cable to obtain a shunt current. Each standby transmission cable is preset with a corresponding passing threshold, and the next standby transmission cable is started to work after the previous standby transmission cable is overloaded. This can deactivate the problematic transmission cable in advance, thereby avoiding output problems of the problematic transmission cable during subsequent use.

[0107] In one embodiment, step S7 of inputting the first operating state and the second operating state into the state prediction model for training to obtain a state prediction value includes:

[0108] S701. Extract the current corresponding to the shunt stage multiple times to obtain multiple current values.

[0109] S702. Extract the voltage after readjusting the voltage of the capacitor multiple times to obtain multiple voltage values.

[0110] S703. Input the multiple current values and multiple voltage values as training samples into the state prediction model and output the state prediction value. The function of the state prediction model is:

[0111]

[0112] Y is the state prediction value, A i is the current value after extracting the current corresponding to the shunt stage multiple times, B i is the voltage value after extracting the voltage after readjusting the voltage of the capacitor multiple times, ε is the deviation coefficient, and i is the number of the current and voltage, where i = 1, 2, 3...n.

[0113] As described in the above steps S701 - S703, first, the current corresponding to the shunt stage is extracted multiple times to obtain multiple current values. Then, the voltage after readjusting the voltage of the capacitor is extracted multiple times to obtain multiple voltage values. Next, the multiple current values and multiple voltage values are used as training samples and input into the state prediction model to output the state prediction value. In this way, by using the parameters of the box-type substation in the overload current monitoring mode and overload voltage monitoring mode as training samples, the state prediction value can be used to predict in advance the subsequent overload problems that may occur in the box-type substation, and through the prediction, the box-type substation can be intervened and adjusted in advance to prevent the box-type substation from having an overload fault and affecting normal operation.

[0114] In one embodiment, step S7 of pre-monitoring and intervening in the abnormal state of the box-type substation according to the state prediction value includes:

[0115] S704. Obtain the abnormal current and abnormal voltage corresponding to the state prediction value, and mark the abnormal current and abnormal voltage to obtain abnormal current marking information and abnormal voltage marking information;

[0116] S705. Generate current warning information and voltage warning information respectively according to the abnormal current marking information and abnormal voltage marking information;

[0117] S706. According to the current warning information, perform early warning and maintenance processing on the current problems that will occur during the operation of the box-type substation;

[0118] S707. According to the voltage warning information, perform early warning and maintenance processing on the voltage problems that will occur during the operation of the box-type substation.

[0119] As described in the above steps S803 - S807, since it is necessary to give an early warning to the box-type substation after it is found that there is an abnormality, and because the box-type substation may have physical damage problems and system allocation problems, based on this, first, obtain the abnormal current and abnormal voltage corresponding to the state prediction value, and mark the abnormal current and abnormal voltage to obtain abnormal current marking information and abnormal voltage marking information. Then, generate current warning information and voltage warning information respectively according to the abnormal current marking information and abnormal voltage marking information, and perform early warning and maintenance processing on the voltage problems that will occur during the operation of the box-type substation according to the voltage warning information. When it is a system problem, the parameters are modified again. When it is a physical problem, the cable with the problem is replaced. Thus, through the above maintenance processing, the box-type substation can be prevented from having an overload fault.

[0120] The present application also provides an operating state monitoring system for a box-type substation, including:

[0121] The first acquisition module 1 is used to acquire the operation status information of the box-type substation, where the operation status information includes rated load current information and safety voltage information;

[0122] The first determination module 2 is used to determine the monitoring mode of the box-type substation according to the operation status information, where the monitoring mode includes an overload current monitoring mode and an overload voltage monitoring mode;

[0123] The second judgment module 3 is used to, when in the overload current monitoring mode, acquire the first rated current corresponding to the box-type substation and judge whether the first rated current exceeds a preset current;

[0124] If it exceeds, calculate the exceeded first overload current according to the first rated current and the preset current;

[0125] The first shunt module 4 is used to divide the first overload current into multiple shunt stages, set corresponding standby transmission cables for each shunt stage, and define the current status corresponding to the shunt stage as the first operation status;

[0126] The second judgment module 5 is used to, when in the overload voltage monitoring mode, acquire the first voltage corresponding to the box-type substation and judge whether the first voltage exceeds a preset voltage;

[0127] If it exceeds, perform abnormal detection on multiple cables during the transmission of the box-type substation to obtain overload voltage cables and normal voltage cables;

[0128] The first adjustment module 6 is used to close the connection end of the overload voltage cable to obtain closing information, and start the capacitor to readjust the voltage according to the closing information, and define the status corresponding to the capacitor's readjusted voltage as the second operation status;

[0129] The first training module 7 is used to input the first operation status and the second operation status into a state prediction model for training to obtain a state prediction value, and perform early monitoring and intervention on the abnormal status of the box-type substation according to the state prediction value.

[0130] In one embodiment, the first training module includes:

[0131] The first extraction unit is used to extract the current corresponding to the shunt stage multiple times to obtain multiple current values;

[0132] The second extraction unit is used to extract the voltage after the capacitor readjusts the voltage multiple times to obtain multiple voltage values;

[0133] A first estimation unit is configured to input the multiple current values and multiple voltage values as training samples into a state estimation model, and output a state estimation value. The function of the state estimation model is as follows:

[0134]

[0135] Y is the state estimation value, A i is the current value obtained by extracting the current corresponding to the shunt stage multiple times, B i is the voltage value obtained by extracting the voltage after readjusting the voltage of the capacitor multiple times. ε is the deviation coefficient, and i is the number of the current and voltage, where i = 1, 2, 3... n.

[0136] As Figure 3 shown, the present application also provides a computer device, which may be a server, and its internal structure may be as Figure 3 shown. The computer device includes a processor, a memory, a network interface, and a database connected through a system bus. Among them, the processor of the computer design is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store all data required for the process of the output power automatic adjustment method of the energy storage inverter. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, it implements the output power automatic adjustment method of the energy storage inverter.

[0137] Those skilled in the art can understand that Figure 3 the structure shown in

[0138] is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied.

[0139] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above various methods. Among them, any reference to a memory, storage, database, or other medium provided in this application and used in the embodiments can include non-volatile and / or volatile memories. Non-volatile memories can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memories can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (SSRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and Rambus dynamic RAM (RDRAM), etc.

[0140] It should be noted that in this article, the terms "include", "comprise", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, apparatus, article, or method including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, apparatus, article, or method. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, apparatus, article, or method including the element.

[0141] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall equally be included in the patent protection scope of the present invention.

Claims

1. A method for monitoring the operating state of a box-type substation, characterized in that, Including: Obtain the operating status information of the box-type substation, where the operating status information includes rated load current information and safety voltage information; Determine the monitoring mode of the box-type substation according to the operating status information, where the monitoring mode includes overload current monitoring mode and overload voltage monitoring mode; When in the overload current monitoring mode, obtain the first rated current corresponding to the box-type substation and determine whether the first rated current exceeds the preset current; If it exceeds, calculate the exceeded first overload current according to the first rated current and the preset current; Divide the first overload current into multiple shunt stages, set corresponding standby transmission cables for each shunt stage, and define the current status corresponding to the shunt stage as the first operating state; When in the overload voltage monitoring mode, obtain the first voltage corresponding to the box-type substation and determine whether the first voltage exceeds the preset voltage; If it exceeds, perform anomaly detection on multiple cables during the transmission of the box-type substation to obtain overload voltage cables and normal voltage cables; Close the connection end of the overload voltage cable to obtain closing information, and start the capacitor to readjust the voltage according to the closing information, and define the state corresponding to the capacitor readjusting the voltage as the second operating state; Input the first operating state and the second operating state into the state prediction model for training to obtain a state prediction value, and perform early monitoring and intervention on the abnormal state of the box-type substation according to the state prediction value.

2. The operating state monitoring method of the box-type substation according to claim 1, characterized in that The step of obtaining the operating status information of the box-type substation includes: Obtain the working duration of the box-type substation, convert the rated capacity of the transformer proportionally according to the working duration of the box-type substation, extract the characteristic coefficient of the rated capacity, and obtain the rated capacity loss characteristic coefficient; Obtain the effective voltage value and the effective current value of the box-type substation, and calculate the apparent power according to the effective voltage value and the effective current value; Obtain the output voltage of the box-type substation; Calculate the load current according to the rated capacity loss characteristic coefficient, the apparent power and the output voltage, where the calculation formula is: I is the load current, P is the apparent power, W is the rated capacity loss characteristic coefficient, and V is the output voltage of the box-type substation; Define the current information corresponding to the load current as the rated load current information; Obtain the aging factor of the box-type substation according to the rated capacity loss characteristic coefficient; Calculate the apparent voltage according to the output voltage and the aging factor, and define the voltage information corresponding to the apparent voltage as the safety voltage information.

3. The method for monitoring the operating state of the box-type substation according to claim 1, wherein, The step of determining the monitoring mode of the box-type substation according to the operating status information includes: Obtain the operating current of the box-type substation and determine whether the operating current exceeds the rated current; If it exceeds, extract the rated load current information according to the operating current, and generate abnormal current information according to the rated load current information; Determine that the monitoring of the box-type substation is in the overload current monitoring mode according to the abnormal current information; Obtain the operating voltage of the box-type substation and determine whether the operating voltage exceeds the rated voltage; If it exceeds, the rated load voltage information is extracted according to the operating voltage, and abnormal voltage information is generated according to the rated load voltage information; Determine that the monitoring of the box-type substation is in the overload voltage monitoring mode according to the abnormal voltage information.

4. The operating status monitoring method of the box-type substation according to claim 1, characterized in that The step of defining the current state corresponding to the shunting stage as the first operating state includes: Shunt the first overload current according to the standby transmission cable to obtain a shunt current. Each standby transmission cable is preset with a corresponding passing threshold, and the next standby transmission cable is started to work after the previous standby transmission cable is overloaded; The box-type substation operates normally according to the shunt current, and defines the normal current operation as the first operating state.

5. The operation status monitoring method of the box-type substation according to claim 1, characterized in that, The step of inputting the first operating state and the second operating state into the state prediction model for training to obtain a state prediction value includes: Extract the current corresponding to the shunting stage multiple times to obtain multiple current values; Extract the voltage after the capacitor readjusts the voltage multiple times to obtain multiple voltage values; Input the multiple current values and multiple voltage values as training samples into the state prediction model, and output the state prediction value. The function of the state prediction model is: Y is the state predicted value, A i is the current value after multiple extractions of the current corresponding to the shunt stage, B i is the voltage value after multiple extractions of the voltage after readjusting the voltage of the capacitor, ε is the deviation coefficient, i is the number of the current and voltage, where i = 1, 2, 3... n.

6. The operating state monitoring method of the box-type substation according to claim 1, characterized in that The step of performing early monitoring and intervention on the abnormal state of the box-type substation according to the state prediction value includes: Obtain the abnormal current and abnormal voltage corresponding to the state prediction value, and mark the abnormal current and abnormal voltage to obtain abnormal current marking information and abnormal voltage marking information; Generate current warning information and voltage warning information according to the abnormal current marking information and abnormal voltage marking information respectively; Perform early warning and maintenance processing on the current problems that will occur during the operation of the box-type substation according to the current warning information; Perform early warning and maintenance processing on the voltage problems that will occur during the operation of the box-type substation according to the voltage warning information.

7. An operating state monitoring system for a box-type substation, characterized in that, Includes: A first acquisition module for acquiring the operating state information of the box-type substation, where the operating state information includes rated load current information and safety voltage information; A first determination module for determining the monitoring mode of the box-type substation according to the operating state information, where the monitoring mode includes an overload current monitoring mode and an overload voltage monitoring mode; A second judgment module for acquiring the first rated current corresponding to the box-type substation and judging whether the first rated current exceeds a preset current when in the overload current monitoring mode; If it exceeds, calculate the exceeded first overload current according to the first rated current and the preset current; A first shunting module for dividing the first overload current into multiple shunting stages, setting corresponding standby transmission cables for each shunting stage, and defining the current state corresponding to the shunting stage as the first operating state; A second judgment module for acquiring the first voltage corresponding to the box-type substation and judging whether the first voltage exceeds a preset voltage when in the overload voltage monitoring mode; If it exceeds, perform abnormal detection on multiple cables during the transmission of the box-type substation to obtain overloaded voltage cables and normal voltage cables; The first adjustment module is used to close the overload voltage cable connection end, obtain the closing information, and start the capacitor to readjust the voltage according to the closing information, and define the state corresponding to the capacitor's readjusted voltage as the second operating state; The first training module is used to input the first operating state and the second operating state into the state prediction model for training to obtain a state prediction value, and perform early monitoring and intervention on the abnormal state of the box-type substation according to the state prediction value.

8. The operating status monitoring system of a box-type substation according to claim 7, characterized in that The first training module includes: The first extraction unit is used to extract the current corresponding to the shunt stage multiple times to obtain multiple current values; The second extraction unit is used to extract the voltage after the capacitor readjusts the voltage multiple times to obtain multiple voltage values; The first prediction unit is used to input the multiple current values and multiple voltage values as training samples into the state prediction model and output a state prediction value. Among them, the function of the state prediction model is: Y is the state predicted value, A i is the current value after multiple extractions of the current corresponding to the shunt stage, B i is the voltage value after multiple extractions of the voltage after readjusting the voltage of the capacitor, ε is the deviation coefficient, and i is the number of the current and voltage, where i = 1, 2, 3... n.

9. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the method according to any one of claims 1 to 6.

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