Mobile power supply system static relative to bucket wheel machine and control method thereof

Abstract

The invention relates to the technical field of bucket wheel machines, in particular to a mobile power supply system static relative to a bucket wheel machine and a control method of the mobile power supply system. Comprising the steps of setting a plurality of power supply sub-areas and a plurality of monitoring points based on a power supply track; establishing a plurality of operation cycles, and setting a power supply strategy of each operation cycle according to a preset power supply control model; acquiring monitoring data of each monitoring point, and judging whether a power supply early warning instruction is generated or not according to all the monitoring data; the traction frame is additionally arranged to fixedly connect the power transmission unit with the bucket wheel machine, so that the traction force in the moving process of the bucket wheel machine is utilized to realize the integral movement of the mobile power supply unit, the mobile power supply of the bucket wheel machine and other electric equipment is realized, the power supply safety and reliability of the bucket wheel machine are improved, and the cable wear in the power supply process is reduced. By additionally arranging the power supply control model, seamless connection of all power supply sub-areas is achieved when the power transmission unit moves on the power supply unit, and early warning is conducted on potential power supply risks in time.

Description

Technical Field

[0001] This application relates to the field of bucket wheel excavator technology, and in particular to a mobile power supply system and its control method that are stationary relative to the bucket wheel excavator. Background Technology

[0002] Bucket wheel excavators (stacking and reclaiming machines) are critical equipment in bulk material storage yards such as ports and power plants, requiring long-distance movement along tracks for operation. Providing them with a continuous and reliable power supply is fundamental to ensuring their operation. Currently, mainstream mobile power supply methods have inherent defects, seriously affecting the reliability and efficiency of the equipment.

[0003] Firstly, the cable reel solution: This solution provides power by winding and unwinding the cable using a reel on the equipment. Its core drawback is that the cable is prone to fatigue damage during repeated winding, unwinding, and bending, leading to insulation aging, core wire breakage, and a significantly shortened lifespan. Furthermore, its core components, such as the slip ring box and torque motor, have a high failure rate, resulting in significant maintenance workload and high costs.

[0004] Secondly, the sliding contact line scheme: This scheme relies on the current collector on the bucket wheel excavator making sliding contact with the conductive rail beside the track to draw power. The problem is that this sliding contact is prone to generating electric sparks and arcs in dusty or humid environments, leading to erosion and wear of the conductive rail and relay, causing power outages. Furthermore, the exposed sliding contact line poses safety hazards, has poor environmental adaptability, and requires frequent maintenance. Summary of the Invention

[0005] The purpose of this application is to solve the above-mentioned technical problems by providing a mobile power supply system and its control method that is relatively stationary with respect to the bucket wheel excavator. This system aims to improve the power supply safety and reliability of the bucket wheel excavator, reduce cable wear during the power supply process, and synchronously transport communication cables, water cables, and other mobile auxiliary facilities related to the operation of the bucket wheel excavator through belt transmission.

[0006] In some embodiments of this application, a traction frame is added to fix the power supply unit to the bucket wheel excavator, thereby utilizing the traction force during the movement of the bucket wheel excavator to realize the overall movement of the mobile power supply unit, realizing mobile power supply to the bucket wheel excavator and other electrical equipment, improving the safety and reliability of power supply to the bucket wheel excavator, and reducing cable wear during the power supply process.

[0007] In some embodiments of this application, by adding a power supply control model, seamless connection of each power supply area is achieved when the power supply unit moves on the power supply unit, thereby improving power supply safety. At the same time, by periodically monitoring the operating status of each power supply area, early warning of potential power supply risks is given in a timely manner, ensuring the safe operation of all equipment.

[0008] In some embodiments of this application, a control method for a mobile power supply system that is stationary relative to the bucket wheel excavator is provided, including:

[0009] Multiple power supply zones and multiple monitoring points are set up based on the power supply track;

[0010] Multiple operating cycles are established, and the power supply strategy for each operating cycle is set according to the preset power supply control model;

[0011] Acquire monitoring data from each monitoring point, and determine whether to generate a power supply early warning command based on all monitoring data.

[0012] In some embodiments of this application, a preset power supply control model is included, including:

[0013] Obtain the location parameters of each power supply area, and generate a first-level power supply sequence based on all location parameters;

[0014] Establish the power supply region sequence A based on the primary power supply sequence;

[0015] A = (a1, a2, ... a i …a n ), where a i Let n be the i-th electron-supplying region; n is the number of electron-supplying regions.

[0016] Based on the electron supply area sequence A, a is set sequentially. i For the target sub-region;

[0017] Obtain historical monitoring data for the target sub-region;

[0018] The power supply efficiency value b for the target sub-region is generated based on historical monitoring data.

[0019]

[0020] Where θ1 represents the number of efficiency indicators; β i v is the influencing factor for the i-th power supply efficiency index; i The historical reference value for the i-th power supply efficiency index in the target sub-region;

[0021] The power supply efficiency values ​​for each power supply region are generated sequentially.

[0022] An efficiency update axis is defined, which includes multiple update time nodes;

[0023] A power supply control model is constructed based on the efficiency update axis and the entire power supply area.

[0024] In some embodiments of this application, the setting of the power supply strategy for each operating cycle includes:

[0025] Set the current running cycle as the target cycle;

[0026] The feedback data packets of the bucket wheel excavator during the target cycle are obtained according to the preset control time nodes;

[0027] The expected movement trajectory of the bucket wheel excavator is generated based on the feedback data packet;

[0028] Generate associated operational values ​​for each electron supply zone within the target period based on the expected movement trajectory;

[0029] Establish a sequence of associated running values ​​C, C = (c1, c2, ..., c3). i …c n ), where c i is the associated operating value of the i-th electron supply region within the target period; n is the number of electron supply regions;

[0030] Preset associated running value threshold C1;

[0031] If c i >C1, set the i-th power supply region as a first-level power supply region within the target period;

[0032] Obtain all primary power supply areas within the target period;

[0033] Establish a sequence A1 for the primary power supply area, A1 = (a 11 a 12 …a 1i …a 1n1 ), where a 1i n1 represents the i-th primary power supply region within the target period; n1 represents the i-th primary power supply region within the target period.

[0034] The power supply strategy for the target cycle is generated based on the power supply area sequence A1 and the power supply control model.

[0035] In some embodiments of this application, the electron supply strategy for generating the target cycle includes:

[0036] Based on the sequence A1 of the primary power supply areas, a is set sequentially. 1i The target area is the primary region.

[0037] Select the associated sub-regions of the target primary power supply region based on the primary power supply region sequence A1;

[0038] Obtain the power supply efficiency value b1 of the target primary region and the power supply efficiency value b2 of the associated sub-region;

[0039] The power supply control model sets the switching sub-strategy for the target primary area based on the power supply efficiency values ​​b1 and b2;

[0040] Sequentially set the switching sub-strategies for each primary power supply zone;

[0041] Generated based on all switching sub-policies

[0042] Set the next primary power supply area for the target primary area.

[0043] Based on the power supply control model, set the switching sub-strategy for the target primary area;

[0044] Sequentially set the switching sub-strategies for each primary power supply zone within the target period;

[0045] The power supply strategy for the target period is set based on all switching sub-strategies.

[0046] In some embodiments of this application, determining whether to generate a power supply warning command includes:

[0047] Multiple monitoring time points are set according to the power supply strategy of the target cycle;

[0048] Acquire monitoring data from each monitoring point at the current monitoring time point and generate a first-level monitoring package;

[0049] Based on the primary monitoring package, power supply risk values ​​for each primary power supply area within the target period are generated;

[0050] Establish a power supply risk value sequence D, where D = (d1, d2, ..., dn). i …d n1 ), where d i n1 represents the power supply risk value of the i-th primary power supply area at the current monitoring time point; n1 represents the number of primary power supply areas within the target period.

[0051] Preset power supply risk threshold D1;

[0052] If d > D1, the current monitoring time node generates a first-level early warning instruction for the i-th first-level power supply area;

[0053] The system sequentially determines whether a Level 1 warning instruction has been generated for each Level 1 power supply area at the current monitoring time point.

[0054] In some embodiments of this application, generating the power supply risk value for each primary power supply area within the target period includes:

[0055] Based on the sequence A1 of the primary power supply areas, a is set sequentially. i This area is designated as a Level 1 monitoring zone.

[0056] The power supply risk value d for the primary area to be monitored is generated based on the monitoring data packet.

[0057]

[0058] Where θ2 represents the number of risk indicators; η i is the influencing factor of the i-th risk indicator; si is the reference value of the i-th risk indicator in the first-level region to be monitored, generated based on the monitoring data package.

[0059] In some embodiments of this application, determining whether to generate a power supply warning command further includes:

[0060] The trajectory deviation value k of the bucket wheel excavator is generated based on the primary monitoring package at the current monitoring time point;

[0061] Generate the operational deviation value f for the current monitoring time node based on the trajectory deviation value k;

[0062] f = r * k

[0063]

[0064] Where r is the deviation compensation coefficient; U1 is the preset first conversion coefficient; n1 is the number of first-level power supply areas within the target period; μ i d represents the influence factor of the i-th primary power supply area within the target period; i The power supply risk value of the i-th primary power supply area within the target area at the current monitoring time point;

[0065] Preset operating deviation threshold F1;

[0066] If f > F1, a level-two early warning instruction is generated at the current monitoring time point.

[0067] In some embodiments of this application, a mobile power supply system that is stationary relative to the bucket wheel excavator is provided, comprising:

[0068] The power supply unit includes a first power supply rail and a second power supply rail;

[0069] The power supply unit also includes multiple electron supply areas;

[0070] The power transmission unit includes a power transmission module and multiple transmission cables;

[0071] The power transmission module is used to connect to the power supply unit;

[0072] The traction unit includes a traction frame and a transmission structure;

[0073] The traction frame is used to connect the power supply unit and the bucket wheel excavator;

[0074] The transmission structure is used to control the running direction of the power transmission unit;

[0075] The central control unit is used to establish multiple operating cycles and set the power supply strategy for each operating cycle according to the preset power supply control model.

[0076] The monitoring unit includes multiple monitoring sub-modules, which are located at various monitoring points.

[0077] The monitoring unit is used to acquire monitoring data from each monitoring point.

[0078] In some embodiments of this application, the central control unit includes:

[0079] The first processing module is used to obtain the location parameters of each power supply area and generate a first-level power supply sequence based on all location parameters.

[0080] Establish the power supply region sequence A based on the primary power supply sequence;

[0081] A = (a1, a2, ... a i …a n ), where a i Let n be the i-th electron-supplying region; n is the number of electron-supplying regions.

[0082] Based on the electron supply area sequence A, a is set sequentially. i For the target sub-region;

[0083] Obtain historical monitoring data for the target sub-region;

[0084] The power supply efficiency value b for the target sub-region is generated based on historical monitoring data.

[0085]

[0086] Where θ1 represents the number of efficiency indicators; β i v is the influencing factor for the i-th power supply efficiency index; i The historical reference value for the i-th power supply efficiency index in the target sub-region;

[0087] The power supply efficiency values ​​for each power supply region are generated sequentially.

[0088] An efficiency update axis is defined, which includes multiple update time nodes;

[0089] A power supply control model is constructed based on the efficiency update axis and the entire power supply area.

[0090] In some embodiments of this application, the central control unit further includes:

[0091] The second processing module is used to set the current running cycle as the target cycle;

[0092] The feedback data packets of the bucket wheel excavator during the target cycle are obtained according to the preset control time nodes;

[0093] The expected movement trajectory of the bucket wheel excavator is generated based on the feedback data packet;

[0094] Generate associated operational values ​​for each electron supply zone within the target period based on the expected movement trajectory;

[0095] Establish a sequence of associated running values ​​C, C = (c1, c2, ..., c3).i …c n ), where c i is the associated operating value of the i-th electron supply region within the target period; n is the number of electron supply regions;

[0096] Preset associated running value threshold C1;

[0097] If c i >C1, set the i-th power supply region as a first-level power supply region within the target period;

[0098] Obtain all primary power supply areas within the target period;

[0099] Establish a sequence A1 for the primary power supply area, A1 = (a 11 a 12 …a 1i …a 1n1 ), where a 1i n1 represents the i-th primary power supply region within the target period; n1 represents the i-th primary power supply region within the target period.

[0100] The power supply strategy for the target cycle is generated based on the power supply area sequence A1 and the power supply control model.

[0101] Compared with the prior art, the advantages of the mobile power supply system and its control method that are stationary relative to the bucket wheel excavator in this application are as follows:

[0102] By adding a traction frame to fix the power supply unit to the bucket wheel excavator, the traction force during the movement of the bucket wheel excavator is used to realize the overall movement of the mobile power supply unit, thereby realizing mobile power supply to the bucket wheel excavator and other electrical equipment, improving the safety and reliability of power supply to the bucket wheel excavator, and reducing cable wear during the power supply process.

[0103] By adding a power supply control model, seamless connection of each power supply area is achieved when the power supply unit moves on the power supply unit, improving power supply safety. At the same time, by periodically monitoring the operating status of each power supply area, early warning of potential power supply risks is given in a timely manner, ensuring the safe operation of all equipment. Attached Figure Description

[0104] Figure 1 This is a flowchart illustrating a control method for a mobile power supply system that is stationary relative to a bucket wheel excavator, according to a preferred embodiment of this application.

[0105] Figure 2 This is a schematic diagram of a mobile power supply system that is stationary relative to the bucket wheel excavator in a preferred embodiment of this application.

[0106] Among them, belt - 100; roller - 200; traction frame - 300; first power supply track - 410; second power supply track - 420; cable structure - 500; main trolley - 600; bracket trolley - 700; pulley - 800. Detailed Implementation

[0107] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.

[0108] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0109] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0110] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0111] like Figure 1 As shown in the preferred embodiment of this application, a control method for a mobile power supply system that is stationary relative to a bucket wheel excavator is characterized by comprising:

[0112] S101: Multiple power supply zones and multiple monitoring points are set based on the power supply track;

[0113] S102: Establish multiple operating cycles and set the power supply strategy for each operating cycle according to the preset power supply control model;

[0114] S103: Obtain monitoring data from each monitoring point and determine whether to generate a power supply warning command based on all monitoring data.

[0115] Specifically, multiple power supply zones are set between the two power supply tracks. Each power supply zone can be individually controlled for power supply. The power transmission module completes the power transmission to the bucket wheel excavator by contacting and connecting with each power supply zone.

[0116] Specifically, during power supply operations, only one power supply zone is allowed to be powered on, while the remaining power supply zones must be turned off to avoid operational risks caused by the simultaneous activation of multiple power supply zones.

[0117] Specifically, multiple monitoring points are set according to the equipment parameters of all power supply areas and bucket wheel excavators. Through all monitoring points, the status data (voltage, current, insulation status, etc.) of each power supply area and the operating data (position parameters, whether there is a power supply abnormality, etc.) of the bucket wheel excavator can be collected in real time, and a first-level monitoring package is generated on a regular basis based on these data.

[0118] Specifically, the operating cycle can be set based on the historical moving speed of the bucket wheel excavator. The faster the historical moving speed, the shorter the corresponding operating cycle. The mapping relationship between the two can be set based on historical parameters.

[0119] Specifically, the preset power supply control model includes:

[0120] Obtain the location parameters of each power supply area, and generate a first-level power supply sequence based on all location parameters;

[0121] Establish the power supply region sequence A based on the primary power supply sequence;

[0122] A = (a1, a2, ... a i …a n ), where a i Let n be the i-th electron-supplying region; n is the number of electron-supplying regions.

[0123] Based on the electron supply area sequence A, a is set sequentially. i For the target sub-region;

[0124] Obtain historical monitoring data for the target sub-region;

[0125] The power supply efficiency value b for the target sub-region is generated based on historical monitoring data.

[0126]

[0127] Where θ1 represents the number of efficiency indicators; β i v is the influencing factor for the i-th power supply efficiency index; i The historical reference value for the i-th power supply efficiency index in the target sub-region;

[0128] The power supply efficiency values ​​for each power supply region are generated sequentially.

[0129] Set an efficiency update axis, which includes multiple update time nodes;

[0130] A power supply control model is constructed based on the efficiency update axis and the entire power supply area.

[0131] Specifically, the historical monitoring data includes historical power supply records for the target sub-region, including historical current curves, historical voltage curves, insulation status during non-power supply periods, and other parameters.

[0132] Specifically, efficiency indicators include parameters related to the power supply stability of multiple feedback target sub-regions, such as historical voltage fluctuations, historical current fluctuations, and the number of faults. By quantifying each efficiency indicator, all efficiency indicators are brought to the same value range.

[0133] Specifically, the rules for setting the values ​​of each efficiency index can be set based on historical parameters. The higher the reference value of each efficiency index, the higher the power supply stability of the target sub-region.

[0134] Specifically, the influencing factors of each efficiency index can be set according to their correlation with power supply stability. The higher the correlation, the larger the value of the corresponding influencing factor. The mapping relationship between the two can be set according to historical parameters.

[0135] Specifically, the higher the power supply efficiency value, the stronger the power supply stability of the target sub-region.

[0136] Specifically, the time interval between adjacent update time nodes can be set based on the average power supply efficiency value of each power supply area. The larger the average value, the more stable the overall power supply is, and the longer the corresponding time interval. The mapping relationship between the two can be set based on historical parameters.

[0137] In a preferred embodiment of this application, the power supply strategy for each operating cycle is set, including:

[0138] Set the current running cycle as the target cycle;

[0139] The feedback data packets of the bucket wheel excavator during the target cycle are obtained according to the preset control time nodes;

[0140] The expected movement trajectory of the bucket wheel excavator is generated based on the feedback data packet;

[0141] Generate associated operational values ​​for each electron supply zone within the target period based on the expected movement trajectory;

[0142] Establish a sequence of associated running values ​​C, C = (c1, c2, ..., c3). i …c n), where c i is the associated operating value of the i-th electron supply region within the target period; n is the number of electron supply regions;

[0143] Preset associated running value threshold C1;

[0144] If c i >C1, set the i-th power supply region as a first-level power supply region within the target period;

[0145] Obtain all primary power supply areas within the target period;

[0146] Establish a sequence A1 for the primary power supply area, A1 = (a 11 a 12 …a 1i …a 1n1 ), where a 1i n1 represents the i-th primary power supply region within the target period; n1 represents the i-th primary power supply region within the target period.

[0147] The power supply strategy for the target cycle is generated based on the power supply area sequence A1 and the power supply control model.

[0148] Specifically, the start time of each running cycle is set as the control time node.

[0149] Specifically, the feedback data packet includes the expected speed and direction of travel of the bucket wheel excavator during the target cycle. By processing the data in the feedback data packet, the expected trajectory of the bucket wheel excavator during the target cycle is generated.

[0150] Specifically, the primary trajectory of the power transmission module is generated based on the expected movement trajectory of the bucket wheel excavator. The primary trajectory is then used to determine whether the power transmission module will make contact with each power supply area within the target cycle (i.e., whether it will move to each power supply area). If contact is made, the operational association value for that power supply area is set to 1. If no contact is made, the operational association value for that power supply area is set to 0.

[0151] Specifically, the range of the threshold value for the associated value is (0, 1).

[0152] Specifically, the electron supply strategy for generating the target cycle includes:

[0153] Based on the sequence A1 of the primary power supply areas, a is set sequentially. 1i The target area is the primary region.

[0154] Select the associated sub-regions of the target primary power supply region based on the primary power supply region sequence A1;

[0155] Obtain the power supply efficiency value b1 of the target primary region and the power supply efficiency value b2 of the associated sub-region;

[0156] The power supply control model sets the switching sub-strategy for the target primary area based on the power supply efficiency values ​​b1 and b2;

[0157] Sequentially set the switching sub-strategies for each primary power supply zone;

[0158] Generated based on all switching sub-policies

[0159] Set the next primary power supply area for the target primary area.

[0160] Based on the power supply control model, set the switching sub-strategy for the target primary area;

[0161] Sequentially set the switching sub-strategies for each primary power supply zone within the target period;

[0162] The power supply strategy for the target period is set based on all switching sub-strategies.

[0163] Specifically, based on the primary movement trajectory of the power transmission module, the power transmission module moves to the next power supply area after completing the contact connection with the target primary area, which is the associated sub-area of ​​the target primary area.

[0164] Specifically, the time period from when the power transmission module begins to enter the associated sub-region to when it is fully entered is defined as the switching period. The power supply duration of the target primary region and the associated sub-region during the switching period is set based on power supply efficiency values ​​b1 and b2. The power supply duration of the target primary region is t1 = [b1 / ((b1+b2)]*t; the power supply duration of the associated region is t2 = [b2 / ((b1+b2)]*t; where t is the duration of the switching period.

[0165] Specifically, based on power supply durations t1 and t2, the power supply stop time point of the target primary area and the power supply start time point of the associated sub-area are set, thereby generating a switching sub-strategy for the target primary area, achieving seamless connection between different primary power supply areas, and ensuring the safe and stable power supply.

[0166] It is understood that in the above embodiments, by adding a power supply control model, seamless connection of each power supply area is achieved when the power supply unit moves on the power supply unit, thereby improving power supply safety. At the same time, by periodically monitoring the operating status of each power supply area, early warning of potential power supply risks is given in a timely manner, ensuring the safe operation of all equipment.

[0167] In a preferred embodiment of this application, determining whether to generate a power supply warning command includes:

[0168] Multiple monitoring time points are set according to the power supply strategy of the target cycle;

[0169] Acquire monitoring data from each monitoring point at the current monitoring time point and generate a first-level monitoring package;

[0170] Based on the primary monitoring package, power supply risk values ​​for each primary power supply area within the target period are generated;

[0171] Establish a power supply risk value sequence D, where D = (d1, d2, ..., dn). i …d n1 ), where d i n1 represents the power supply risk value of the i-th primary power supply area at the current monitoring time point; n1 represents the number of primary power supply areas within the target period.

[0172] Preset power supply risk threshold D1;

[0173] If d > D1, the current monitoring time node generates a first-level early warning instruction for the i-th first-level power supply area;

[0174] The system sequentially determines whether a Level 1 warning instruction has been generated for each Level 1 power supply area at the current monitoring time point.

[0175] Specifically, the power supply risk threshold can be set based on historical parameters. If the current power supply risk value of the primary power supply area is greater than the power supply risk threshold, it indicates that there is a potential operational risk in the current primary power supply area (such as leakage, short circuit caused by simultaneous start-up of multiple areas, etc.). It is necessary to carry out maintenance in a timely manner according to the primary warning instruction to ensure operational safety.

[0176] Specifically, the power supply risk values ​​for each primary power supply area within the target period are generated, including:

[0177] Based on the sequence A1 of the primary power supply areas, a is set sequentially. i This area is designated as a Level 1 monitoring zone.

[0178] The power supply risk value d for the primary area to be monitored is generated based on the monitoring data packet.

[0179]

[0180] Where θ2 represents the number of risk indicators; η i is the influencing factor of the i-th risk indicator; si is the reference value of the i-th risk indicator in the first-level region to be monitored, generated based on the monitoring data package.

[0181] Specifically, risk indicators include, but are limited to, several parameters related to operational risk, such as voltage fluctuation (the difference between the maximum and minimum voltage in the current monitoring period), current fluctuation (the difference between the maximum and minimum current in the current monitoring period), voltage deviation (the difference between the voltage and the normal operating voltage), current deviation (the difference between the voltage and the normal operating current), and the number of leakage points. By quantifying each parameter, all parameters are made to fall within the same value range, and the larger the reference value of each risk indicator, the greater the possibility of potential operational risk.

[0182] Specifically, the influencing factors of each risk indicator can be set according to their correlation with operational risks; the greater the correlation, the higher the reference value of the corresponding influencing factor. The mapping relationship between the two can be set based on historical parameters.

[0183] In a preferred embodiment of this application, determining whether to generate a power supply warning command further includes:

[0184] The trajectory deviation value k of the bucket wheel excavator is generated based on the primary monitoring package at the current monitoring time point;

[0185] Generate the operational deviation value f for the current monitoring time node based on the trajectory deviation value k;

[0186] f = r * k

[0187]

[0188] Where r is the deviation compensation coefficient; U1 is the preset first conversion coefficient; n1 is the number of first-level power supply areas within the target period; μ i d represents the influence factor of the i-th primary power supply area within the target period; i The power supply risk value of the i-th primary power supply area within the target area at the current monitoring time point;

[0189] Preset operating deviation threshold F1;

[0190] If f > F1, a level-two early warning instruction is generated at the current monitoring time point.

[0191] Specifically, a position difference is generated based on the real-time position and the expected position of the bucket wheel excavator. A trajectory deviation value is set based on the position difference. The larger the position difference, the larger the corresponding trajectory deviation value. The mapping relationship between the two can be set based on historical parameters.

[0192] Specifically, by presetting a first conversion coefficient, the deviation compensation coefficient r is always kept within a preset value range, and The larger the value of , the larger the corresponding deviation compensation coefficient r. The mapping relationship between the two can be set according to historical parameters. The deviation compensation coefficient r is always greater than 1.

[0193] Specifically, the operating deviation threshold can be set based on historical parameters. When the operating deviation value is greater than the preset operating deviation threshold, it indicates that there is a deviation in the power supply parameters within the target period. It is necessary to update the efficiency evaluation value of each power supply area and the expected movement trajectory of the bucket wheel excavator in a timely manner according to the secondary early warning instruction, and correct the power supply strategy within the target period based on the update results.

[0194] In another preferred embodiment of the control system for a mobile power supply system stationary relative to the bucket wheel excavator based on any of the above preferred embodiments, this preferred embodiment provides a mobile power supply system stationary relative to the bucket wheel excavator, comprising:

[0195] The power supply unit includes a first power supply rail 410 and a second power supply rail 420;

[0196] The power supply unit also includes multiple power supply areas;

[0197] The power transmission unit includes a power transmission module and multiple transmission cables;

[0198] The power transmission module is used to connect to the power supply unit;

[0199] The traction unit includes a traction frame 300 and a transmission structure;

[0200] The traction frame 300 is used to connect the power supply unit and the bucket wheel excavator;

[0201] The transmission structure is used to control the running direction of the power transmission unit;

[0202] The central control unit is used to establish multiple operating cycles and set the power supply strategy for each operating cycle according to the preset power supply control model.

[0203] The monitoring unit includes multiple monitoring sub-modules, which are set up at various monitoring points;

[0204] The monitoring unit is used to acquire monitoring data from each monitoring point.

[0205] Specifically, the monitoring sub-module is preferably composed of various types of data acquisition devices, and the corresponding data acquisition device is selected according to the type of data to be collected at each monitoring point.

[0206] Specifically, the first power supply track 410 and the second power supply track 420 are parallel structures, and the entire mobile power supply system can be moved along the first power supply track 410 and the second power supply track 420 through a transmission structure.

[0207] Specifically, one end of the traction frame 300 is connected and secured to equipment requiring mobile power supply, such as a bucket wheel excavator, by welding or bolting. The other end is connected to the power supply unit via two side belts 100.

[0208] Specifically, the transmission structure consists of a belt 100, a roller 200, a pulley 800, and a cable structure 500. The cable structure 500 includes a cable fixing frame and a cable guide.

[0209] Specifically, the power supply, control cables, and water pipes required by the bucket wheel excavator are fixed to the belt 100 by cable clamps and are stationary relative to the belt 100. Their main function is to fix the cables and other conduits.

[0210] Specifically, because the bucket wheel excavator travels a long distance, the pulley 800 component is longer, and the length of the matching belt 100 will increase accordingly. Cables and other related facilities are laid on top of the belt 100, and the cable fixing clamps are used to fix the cables and other conduits to the belt 100 to prevent them from slipping off during movement, thus also serving a fixing function.

[0211] Specifically, the traction frame 300 transmits power to the roller 200 in the opposite direction of forward movement via the belt 100. Driven by the belt 100, the trolley 800 of the moving power supply system moves forward or backward under the thrust of the belt 100.

[0212] Specifically, during operation, the bucket wheel excavator transmits force to the belt 100 through the traction frame 300. Under the squeezing action of the belt 100, the entire trolley 800 moves, and the trolley 800 slides on the first power supply guide rail and the second power supply guide rail.

[0213] Specifically, the rollers 200 are installed at both ends of the mobile power supply system, serving to redirect the belt 100. The belt 100 changes its running direction at the rollers 200, while also serving to transmit the belt 100. Ultimately, the purpose of mobile power supply is achieved through the combined action of the belt 100, rollers 200, and trolleys 800.

[0214] It is understood that in the above embodiments, by adding a traction frame to fix the power supply unit to the bucket wheel excavator, the traction force during the movement of the bucket wheel excavator is used to realize the overall movement of the mobile power supply unit, thereby realizing the mobile power supply to the bucket wheel excavator and other electrical equipment, improving the safety and reliability of power supply to the bucket wheel excavator, and reducing cable wear during the power supply process.

[0215] In a preferred embodiment of this application, the central control unit includes:

[0216] The first processing module is used to obtain the location parameters of each power supply area and generate a first-level power supply sequence based on all location parameters.

[0217] Establish the power supply region sequence A based on the primary power supply sequence;

[0218] A = (a1, a2, ... a i …a n ), where a i Let n be the i-th electron-supplying region; n is the number of electron-supplying regions.

[0219] Based on the electron supply area sequence A, a is set sequentially. i For the target sub-region;

[0220] Obtain historical monitoring data for the target sub-region;

[0221] The power supply efficiency value b for the target sub-region is generated based on historical monitoring data.

[0222]

[0223] Where θ1 represents the number of efficiency indicators; β i v is the influencing factor for the i-th power supply efficiency index; i The historical reference value for the i-th power supply efficiency index in the target sub-region;

[0224] The power supply efficiency values ​​for each power supply region are generated sequentially.

[0225] Set an efficiency update axis, which includes multiple update time nodes;

[0226] A power supply control model is constructed based on the efficiency update axis and the entire power supply area.

[0227] In a preferred embodiment of this application, the central control unit further includes:

[0228] The second processing module is used to set the current running cycle as the target cycle;

[0229] The feedback data packets of the bucket wheel excavator during the target cycle are obtained according to the preset control time nodes;

[0230] The expected movement trajectory of the bucket wheel excavator is generated based on the feedback data packet;

[0231] Generate associated operational values ​​for each electron supply zone within the target period based on the expected movement trajectory;

[0232] Establish a sequence of associated running values ​​C, C = (c1, c2, ..., c3). i …c n ), where c iis the associated operating value of the i-th electron supply region within the target period; n is the number of electron supply regions;

[0233] Preset associated running value threshold C1;

[0234] If c i >C1, set the i-th power supply region as a first-level power supply region within the target period;

[0235] Obtain all primary power supply areas within the target period;

[0236] Establish a sequence A1 for the primary power supply area, A1 = (a 11 a 12 …a 1i …a 1n1 ), where a 1i n1 represents the i-th primary power supply region within the target period; n1 represents the i-th primary power supply region within the target period.

[0237] The power supply strategy for the target cycle is generated based on the power supply area sequence A1 and the power supply control model.

[0238] According to the first concept of this application, by adding a traction frame to fix the power supply unit to the bucket wheel excavator, the traction force during the movement of the bucket wheel excavator is used to realize the overall movement of the mobile power supply unit, thereby realizing the mobile power supply to the bucket wheel excavator and other electrical equipment, improving the safety and reliability of power supply to the bucket wheel excavator, and reducing cable wear during the power supply process.

[0239] According to the second concept of this application, by adding a power supply control model, seamless connection of each power supply area can be achieved when the power supply unit moves on the power supply unit, thereby improving power supply safety. At the same time, by periodically monitoring the operating status of each power supply area, early warning of potential power supply risks can be given in a timely manner, ensuring the safe operation of all equipment.

[0240] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. A control method for a mobile power supply system that is stationary relative to a bucket wheel excavator, characterized in that, include: Multiple power supply zones and multiple monitoring points are set up based on the power supply track; Multiple operating cycles are established, and the power supply strategy for each operating cycle is set according to the preset power supply control model; Acquire monitoring data from each monitoring point, and determine whether to generate a power supply early warning command based on all monitoring data.

2. The control method for a mobile power supply system that is stationary relative to the bucket wheel excavator as described in claim 1, characterized in that, The preset power supply control model includes: Obtain the location parameters of each power supply area, and generate a first-level power supply sequence based on all location parameters; Establish the power supply region sequence A based on the primary power supply sequence; A = (a1, a2, ... a i …a n ), where a i Let n be the i-th electron-supplying region; n is the number of electron-supplying regions. Based on the electron supply area sequence A, a is set sequentially. i For the target sub-region; Obtain historical monitoring data for the target sub-region; The power supply efficiency value b for the target sub-region is generated based on historical monitoring data. Where θ1 represents the number of efficiency indicators; β i v is the influencing factor for the i-th power supply efficiency index; i The historical reference value for the i-th power supply efficiency index in the target sub-region; The power supply efficiency values ​​for each power supply region are generated sequentially. An efficiency update axis is defined, which includes multiple update time nodes; A power supply control model is constructed based on the efficiency update axis and the entire power supply area.

3. The control method for a mobile power supply system that is stationary relative to the bucket wheel excavator as described in claim 2, characterized in that, The power supply strategy for each operating cycle includes: Set the current running cycle as the target cycle; The feedback data packets of the bucket wheel excavator during the target cycle are obtained according to the preset control time nodes; The expected movement trajectory of the bucket wheel excavator is generated based on the feedback data packet; Generate associated operational values ​​for each electron supply zone within the target period based on the expected movement trajectory; Establish a sequence of associated running values ​​C, C = (c1, c2, ..., c3). i …c n ), where c i is the associated operating value of the i-th electron supply region within the target period; n is the number of electron supply regions; Preset associated running value threshold C1; If c i >C1, set the i-th power supply region as a first-level power supply region within the target period; Obtain all primary power supply areas within the target period; Establish a sequence A1 for the primary power supply area, A1 = (a 11 a 12 …a 1i …a 1n1 ), where a 1i n1 represents the i-th primary power supply region within the target period; n1 represents the i-th primary power supply region within the target period. The power supply strategy for the target cycle is generated based on the power supply area sequence A1 and the power supply control model.

4. The control method for a mobile power supply system that is stationary relative to the bucket wheel excavator as described in claim 3, characterized in that, The electron supply strategy for generating the target cycle includes: Based on the sequence A1 of the primary power supply areas, a is set sequentially. 1i The target area is the primary region. Select the associated sub-regions of the target primary power supply region based on the primary power supply region sequence A1; Obtain the power supply efficiency value b1 of the target primary region and the power supply efficiency value b2 of the associated sub-region; The power supply control model sets the switching sub-strategy for the target primary area based on the power supply efficiency values ​​b1 and b2; Sequentially set the switching sub-strategies for each primary power supply zone; Generated based on all switching sub-policies Set the next primary power supply area for the target primary area. Based on the power supply control model, set the switching sub-strategy for the target primary area; Sequentially set the switching sub-strategies for each primary power supply zone within the target period; The power supply strategy for the target period is set based on all switching sub-strategies.

5. The control method for a mobile power supply system that is stationary relative to the bucket wheel excavator as described in claim 4, characterized in that, Determining whether to generate a power supply warning command includes: Multiple monitoring time points are set according to the power supply strategy of the target cycle; Acquire monitoring data from each monitoring point at the current monitoring time point and generate a first-level monitoring package; Based on the primary monitoring package, power supply risk values ​​for each primary power supply area within the target period are generated; Establish a power supply risk value sequence D, where D = (d1, d2, ..., dn). i …d n1 ), where d i n1 represents the power supply risk value of the i-th primary power supply area at the current monitoring time point; n1 represents the number of primary power supply areas within the target period. Preset power supply risk threshold D1; If d > D1, the current monitoring time node generates a first-level early warning instruction for the i-th first-level power supply area; The system sequentially determines whether a Level 1 warning instruction has been generated for each Level 1 power supply area at the current monitoring time point.

6. The control method for a mobile power supply system that is stationary relative to the bucket wheel excavator as described in claim 5, characterized in that, The power supply risk values ​​for each primary power supply area within the target period include: Based on the sequence A1 of the primary power supply areas, a is set sequentially. i This area is designated as a Level 1 monitoring zone. The power supply risk value d for the primary area to be monitored is generated based on the monitoring data packet. Where θ2 represents the number of risk indicators; η i is the influencing factor of the i-th risk indicator; si is the reference value of the i-th risk indicator in the first-level region to be monitored, generated based on the monitoring data package.

7. The control method for a mobile power supply system that is stationary relative to the bucket wheel excavator as described in claim 6, characterized in that, Determining whether to generate a power supply warning command also includes: The trajectory deviation value k of the bucket wheel excavator is generated based on the primary monitoring package at the current monitoring time point; Generate the operational deviation value f for the current monitoring time node based on the trajectory deviation value k; f = r * k; Where r is the deviation compensation coefficient; U1 is the preset first conversion coefficient; n1 is the number of first-level power supply areas within the target period; μ i d represents the influence factor of the i-th primary power supply area within the target period; i The power supply risk value of the i-th primary power supply area within the target area at the current monitoring time point; Preset operating deviation threshold F1; If f > F1, a level-two early warning instruction is generated at the current monitoring time point.

8. A mobile power supply system stationary relative to a bucket wheel excavator, employing the control method for the mobile power supply system stationary relative to a bucket wheel excavator as described in any one of claims 1-7, characterized in that, include: The power supply unit includes a first power supply rail and a second power supply rail; The power supply unit also includes multiple electron supply areas; The power transmission unit includes a power transmission module and multiple transmission cables; The power transmission module is used to connect to the power supply unit; The traction unit includes a traction frame and a transmission structure; The traction frame is used to connect the power supply unit and the bucket wheel excavator; The transmission structure is used to control the running direction of the power transmission unit; The central control unit is used to establish multiple operating cycles and set the power supply strategy for each operating cycle according to the preset power supply control model. The monitoring unit includes multiple monitoring sub-modules, which are located at various monitoring points. The monitoring unit is used to acquire monitoring data from each monitoring point.

9. The mobile power supply system that is stationary relative to the bucket wheel excavator as described in claim 8, characterized in that, The central control unit includes: The first processing module is used to obtain the location parameters of each power supply area and generate a first-level power supply sequence based on all location parameters. Establish the power supply region sequence A based on the primary power supply sequence; A = (a1, a2, ... a i …a n ), where a i Let n be the i-th electron-supplying region; n is the number of electron-supplying regions. Based on the electron supply area sequence A, a is set sequentially. i For the target sub-region; Obtain historical monitoring data for the target sub-region; The power supply efficiency value b for the target sub-region is generated based on historical monitoring data. Where θ1 represents the number of efficiency indicators; β i v is the influencing factor for the i-th power supply efficiency index; i The historical reference value for the i-th power supply efficiency index in the target sub-region; The power supply efficiency values ​​for each power supply region are generated sequentially. An efficiency update axis is defined, which includes multiple update time nodes; A power supply control model is constructed based on the efficiency update axis and the entire power supply area.

10. The mobile power supply system that is stationary relative to the bucket wheel excavator as described in claim 9, characterized in that, The central control unit also includes: The second processing module is used to set the current running cycle as the target cycle; The feedback data packets of the bucket wheel excavator during the target cycle are obtained according to the preset control time nodes; The expected movement trajectory of the bucket wheel excavator is generated based on the feedback data packet; Generate associated operational values ​​for each electron supply zone within the target period based on the expected movement trajectory; Establish a sequence of associated running values ​​C, C = (c1, c2, ..., c3). i …c n ), where c i is the associated operating value of the i-th electron supply region within the target period; n is the number of electron supply regions; Preset associated running value threshold C1; If c i >C1, set the i-th power supply region as a first-level power supply region within the target period; Obtain all primary power supply areas within the target period; Establish a sequence A1 for the primary power supply area, A1 = (a 11 a 12 …a 1i …a 1n1 ), where a 1i n1 represents the i-th primary power supply region within the target period; n1 represents the i-th primary power supply region within the target period. The power supply strategy for the target cycle is generated based on the power supply area sequence A1 and the power supply control model.

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