Wind power generation and power utilization system applied to auxiliary shaft of coal mine

Abstract

The invention provides a wind power generation and power utilization system applied to an auxiliary shaft of a coal mine. The wind power generation and power utilization system comprises a power generation and power utilization data acquisition device, power generation and power utilization equipment, a power generation monitoring platform and a controller, the controller obtains the wind speed in the auxiliary shaft through the power generation and utilization data acquisition device, and when the wind speed is larger than a preset wind speed threshold value, the wind driven generator starts to generate power; the wind driven generator is connected with the storage battery through the charging controller to charge the storage battery; when the coal mine electric device in the coal mine auxiliary shaft uses electricity, the storage battery transmits electric energy to the coal mine electric device through the inverter; wind power resources of a coal mine auxiliary shaft can be better utilized for power generation, and electric energy is reasonably distributed to coal mine electric devices. The system can efficiently monitor power generation and utilization parameters, adjust a monitoring strategy and reliably transmit data, and the operation efficiency of the system is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine power generation, and in particular relates to a wind power generation and power consumption system applied to a coal mine auxiliary shaft. Background Art

[0002] Auxiliary shafts in coal mines are tunnels used for underground mining operations. Auxiliary shafts can be used to lift and lower personnel, materials, and equipment during coal mining, providing the necessary material and technical support for the normal operation of the mine. Auxiliary shafts sometimes also serve as air intake shafts to provide fresh air for the mine.

[0003] At present, wind turbines can be used in the auxiliary shafts of coal mines to generate wind power. The generated electricity can be supplied to electrical equipment. In the process of wind power generation and electricity consumption, effective monitoring is required to ensure the stable operation of the power generation and electricity consumption process.

[0004] In the prior art, the fixed monitoring cycle method wastes a lot of resources for unnecessary monitoring when the system is running stably, and fails to capture key information in time when the system is abnormal. The lack of a fixed benchmark monitoring cycle leads to unstable data acquisition and chaotic monitoring process, making it difficult to ensure the consistency and stability of data collection. In addition, in the past, the lack of a unified and clear comparison result as a basis for decision-making may lead to confusion in the control strategy of the system under different operating conditions, making it difficult to achieve effective status tracking and reasonable control. Summary of the invention

[0005] The present invention provides a wind power generation and power consumption system applied to a coal mine auxiliary shaft. The system drives a wind turbine generator based on the wind power of the coal mine auxiliary shaft to achieve wind power generation, and stores the generated electricity and supplies it to power consumption equipment.

[0006] The system includes: power generation and electricity consumption data acquisition device, power generation and electricity consumption equipment, power generation monitoring platform and controller; Power generation equipment includes: charge controller, battery, inverter, wind turbine installed inside the auxiliary shaft and coal mine power equipment; The controller obtains the wind speed in the auxiliary shaft through the power generation and consumption data acquisition device. When the wind speed is greater than the preset wind speed threshold, the wind turbine starts to generate electricity; The wind turbine generator is connected to the battery through a charging controller to charge the battery; The controller monitors the voltage, current and temperature parameters of the battery through the power generation and consumption data acquisition device; When the coal mine power device in the coal mine auxiliary shaft uses electricity, the battery transmits power to the coal mine power device through the inverter; When the wind speed in the auxiliary shaft is lower than the preset wind speed threshold, the controller controls the wind turbine to stop rotating, and when the remaining power of the battery is lower than the preset power threshold, the controller controls the battery to stop transmitting electrical energy.

[0007] Preferably, the power generation and electricity consumption data collection device comprises: Anemometers and wind vanes installed in the auxiliary shaft to obtain wind speed and direction; Install voltage sensors, current sensors and power sensors at the output end of the wind turbine generator to obtain and monitor the working status and power generation efficiency of the generator; Install a voltage sensor, a current sensor and a temperature sensor at the output end of the battery; Speed ​​sensor and temperature sensor installed on the wind turbine.

[0008] Preferably, the controller acquires multiple auxiliary shaft power generation thresholds and corresponding power generation monitoring cycles of the power generation interface of the power generation equipment; monitors the power generation parameters of the power generation interface with an acquisition cycle of a preset monitoring time; The controller compares the power generation and consumption parameters with a plurality of auxiliary shaft power generation and consumption thresholds; The controller determines a power generation and power consumption monitoring cycle based on the comparison result to send the power generation and power consumption parameters to the communication processing module according to the power generation and power consumption monitoring cycle; The communication processing module configures the power generation parameters into message packages and sends them to the power generation monitoring platform.

[0009] Preferably, the controller calculates the power generation utilization factor η based on the power generation power P, the power consumption power P_load and the rated power P_rated of the equipment, and the calculation formula is: η = (P - P_load) / P_rated × 100%; Based on historical data statistics and system performance analysis, determine the thresholds and monitoring cycles corresponding to different power generation utilization intervals; The controller sets n threshold ranges and corresponding monitoring periods Ti (i = 1, 2,…, n) according to different power generation utilization rates, and determines that the matching threshold index is k, then the current monitoring period T_current = T_k should be adopted.

[0010] Preferably, the controller is based on setting the period as T_sample, the sampling frequency of the sensor as f_sample, and the number of data points collected in each acquisition period is N = T_sample × f_sample; f_sample ≥ 2f_max, where f_max is the frequency of the highest frequency component in the power generation and consumption parameters; Obtain the period T_sample and optimize and adjust it according to the dynamic response characteristics and data processing capabilities of the system; For any power generation parameter X, let the power generation threshold range of the i-th auxiliary shaft be [X_i_min, X_i_max], and the center value of the threshold range be X_i_center= (X_i_min+X_i_max) / 2; Calculate the matching index M_i between parameter X and the i-th threshold range; When Mi is less than a certain set threshold, an early warning signal is issued to indicate that the system is operating abnormally.

[0011] Preferably, in step S310, the controller obtains a plurality of auxiliary shaft power generation thresholds of the power generation interface of the power generation equipment arranged from small to large from the configuration information retrieved from the power generation monitoring platform, and the power generation monitoring cycles corresponding to the plurality of auxiliary shaft power generation thresholds arranged from small to large are successively reduced; Step S320, the controller monitors the power generation and power consumption parameters of the power generation and power consumption interface with an acquisition cycle of a preset monitoring time; Step S330, the controller determines whether the power generation parameter reaches the power generation threshold of the first auxiliary shaft; if so, execute step S340; if not, execute step S350; Step S340, if the power generation parameter reaches the power generation threshold of the first auxiliary well, the controller compares the power generation parameter with the power generation thresholds of the auxiliary wells after the first auxiliary well power generation threshold in order of the power generation thresholds of the auxiliary wells arranged from small to large; Step S350, if the power generation and consumption parameter does not reach the power generation and consumption threshold of the first auxiliary well, the controller uses the power generation and consumption threshold of the first auxiliary well as the power generation and consumption threshold of the second auxiliary well; In step S360, the controller obtains a comparison result of the power consumption threshold of the second auxiliary well.

[0012] Preferably, in step S310, the threshold sequence is set to Tn, and the corresponding monitoring period sequence is set to Pn. According to the dynamic characteristics and response requirements of the system, the monitoring period is set in an exponential decay or linear decreasing manner; The linear decline model is , P1 is the first power generation and consumption monitoring period, k is the decreasing coefficient, and n is the sequence number of the threshold value; In step S330, assuming that the power generation parameter is x and the power generation threshold of the first auxiliary shaft is T1, the comparison result R is expressed by a logical expression as follows: , where R=1 means that the power generation threshold of the first auxiliary well has been reached, and R=0 means that it has not been reached.

[0013] Preferably, in step S410, the controller obtains multiple auxiliary shaft power generation and consumption thresholds, corresponding power generation and consumption monitoring periods, and time thresholds of the power generation and consumption interfaces of the power generation and consumption equipment from the retrieved configuration information of the power generation monitoring platform; In step S420, the controller compares the power generation and consumption parameters with the multiple auxiliary shaft power generation and consumption thresholds to obtain the comparison results of the corresponding second auxiliary shaft power generation and consumption thresholds; In step S430, it is judged whether the time when the power generation and consumption parameters reach the first auxiliary shaft power generation and consumption threshold exceeds the time threshold; In step S440, if the time when the power generation and consumption parameters reach the second auxiliary shaft power generation and consumption threshold exceeds the time threshold, the controller determines a second power generation and consumption monitoring period based on the second auxiliary shaft power generation and consumption threshold to send the power generation and consumption parameters to the communication processing module according to the second power generation and consumption monitoring period; In step S450, if the time when the power generation and consumption parameters reach the second auxiliary shaft power generation and consumption threshold does not exceed the time threshold, the controller sends the power generation and consumption parameters to the communication processing module according to the first power generation and consumption monitoring period based on the first power generation and consumption monitoring period; In step S460, the communication processing module performs message encapsulation on the power generation and consumption parameters and sends them to the power generation monitoring platform.

[0014] Preferably, in step S420, Let the power generation and consumption parameter be x, the i-th auxiliary shaft power generation and consumption threshold be X_i, and the total number of thresholds be n; the comparison process is as follows: Set the index i = 1, the flag reached = false, indicating that no threshold has been reached yet; Loop comparison: When i <= n and X >= X_i, perform the following operations: reached = true Update the currently reached maximum threshold index max_index = i i = i + 1 When i > n or X < X_i, break out of the loop; The final result is: if reached = true, the second auxiliary shaft power generation and consumption threshold is X_max_index, and the comparison result is the information of the reached threshold; If reached = false, the second auxiliary shaft power generation and consumption threshold is X_1 (the first auxiliary shaft power generation and consumption threshold), and the comparison result is the information of not reaching any threshold.

[0015] Preferably, in step S440, after determining that the power generation and power consumption parameter reaches the power generation and power consumption threshold of the second auxiliary well and exceeds the time threshold, the controller obtains the second power generation and power consumption monitoring period corresponding to the power generation and power consumption threshold of the second auxiliary well by querying the correspondence between the pre-stored threshold and the monitoring period; The controller adjusts the internal timer settings or data collection trigger mechanism, collects power generation and power consumption parameters according to the new monitoring cycle, and sends the collected data to the communication processing module; The threshold value of the power consumption of the second auxiliary shaft is X_max, and the corresponding monitoring period of the second power consumption is T_max. According to the performance requirements of the system and the statistical analysis of historical data, the functional relationship between the threshold value and the monitoring period is established: T_max = a - b × X_max, where a and b are coefficients obtained by fitting the preset number of historical data. Once X_max is determined, T_max is calculated according to this formula.

[0016] It can be seen from the above technical solutions that the present invention has the following advantages: The wind power generation and power consumption system applied to the auxiliary shaft of a coal mine provided by the present invention can better utilize the wind power resources of the auxiliary shaft of the coal mine for power generation and reasonably distribute electric energy to the power consumption devices of the coal mine through the refined management of the power generation and power consumption equipment, such as the coordinated work of the charging controller, the storage battery, the inverter and the wind turbine. The data transmission from the power generation and power consumption data collection to the monitoring platform ensures the stable operation of the entire power generation and power consumption process, and reduces the risk of power outages caused by equipment failure or parameter abnormalities.

[0017] The communication processing module of the present invention encapsulates the power generation and electricity consumption parameters sent by the controller into a message and sends it to the power generation monitoring platform. The communication transmission of the message encapsulation ensures that the power generation and electricity consumption parameters can be accurately and timely transmitted from the controller at the coal mine auxiliary shaft site to the power generation monitoring platform. The coal mine auxiliary shaft wind power generation and power consumption system can realize efficient monitoring of power generation and electricity consumption parameters, adjust monitoring strategies, and reliable data transmission, thereby improving the operating efficiency of the system.

[0018] In this application, the threshold values ​​of power generation and electricity consumption of multiple auxiliary wells are arranged from small to large and the monitoring cycle decreases successively, so that the system can reasonably allocate monitoring resources according to the importance and urgency of the operating status. When the system parameters are close to the normal range, a longer monitoring cycle is adopted to reduce the calculation burden of the controller and the energy consumption of the system; when the parameters are close to or exceed more critical thresholds, the monitoring cycle is shortened. The acquisition cycle with a preset monitoring time provides a basic monitoring frequency for the system, ensuring that the system can continuously and stably obtain power generation and electricity consumption parameters under normal circumstances. Even when the parameters have not yet reached the critical threshold, a basic understanding of the system's operating status can be maintained to avoid data loss or system instability due to disordered changes in the monitoring frequency.

[0019] This application can achieve hierarchical monitoring. If the power generation threshold of the first auxiliary well has not been reached, it means that the system is in a relatively stable low-risk operating state, and monitoring can continue according to the preset basic acquisition cycle; if the power generation threshold of the first auxiliary well has been reached, the monitoring and analysis process will be started. This hierarchical judgment mechanism helps to improve the efficiency and pertinence of system monitoring and improve the intelligence of monitoring. By recording the relative maximum power generation threshold of the auxiliary well, the position of the current system operating state in the threshold sequence can be accurately grasped, providing key information for subsequent adjustment of the monitoring cycle and taking corresponding measures according to the threshold. This application can achieve effective tracking and reasonable control of the system operating state through this comparison result, whether it is necessary to strengthen monitoring when the parameters reach a higher threshold, or to maintain basic monitoring when the parameters are in a relatively low stable state, thereby improving the overall performance and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the wind power generation and power consumption system used in the auxiliary shaft of a coal mine; Figure 2 This is a process diagram for realizing wind power generation and power consumption system in coal mine auxiliary shaft; Figure 3 Execution flow chart for wind power generation and power consumption system applied to coal mine auxiliary shaft; Figure 4 A flow chart of another embodiment of the system. DETAILED DESCRIPTION

[0022] The wind power generation and power consumption system applied to the auxiliary shaft of a coal mine provided in the present application utilizes the ventilation of the auxiliary shaft of the coal mine to drive the wind turbine generator, thereby achieving the function of power generation.

[0023] In the following, various embodiments of the present disclosure will be more fully described in the application to the wind power generation and power consumption system of the auxiliary shaft of the coal mine. The present disclosure may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present disclosure to the specific embodiments disclosed herein, but the present disclosure should be understood to cover all adjustments, equivalents and / or alternatives that fall within the spirit and scope of the various embodiments of the present disclosure.

[0024] The present application relates to a wind power generation and power consumption system applied to a coal mine auxiliary shaft, including a coal mine power consumption device, a power generation monitoring platform and a controller.

[0025] Electrical devices used in coal mines may include but are not limited to lighting, two-way voice intercoms, video surveillance cameras, intelligent recognition cameras installed on the entrance and exit sides of the cage, music broadcasts, hoists, unattended terminal operating devices, automatic opening and closing door curtains, etc.

[0026] A controller is a device that can automatically perform numerical calculations and / or information processing according to pre-set or stored instructions. Its hardware includes but is not limited to microprocessors, application-specific integrated circuits (ASICs), programmable gate arrays (FPGAs), digital signal processors (DSPs), embedded devices, etc.

[0027] The power generation monitoring platform is intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers.

[0028] The system has wireless Internet to realize the communication connection between the power generation and power consumption data collection device, power generation and power consumption equipment, power generation monitoring platform and controller. The wireless Internet access technology involved may include wireless local area network (Wi-Fi, WLAN, Wireless Local Area Networks), wireless broadband (Wibro), World Wide Microwave Interoperability Access (Wimax), High Speed ​​Downlink Packet Access (HSDPA, High Speed ​​Downlink Packet Access), etc.

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1 Shown is a schematic diagram of a wind power generation and power consumption system applied to a coal mine auxiliary shaft in a specific embodiment.

[0031] The system includes: power generation and electricity data acquisition device, power generation and electricity equipment, power generation monitoring platform and controller. The power generation and electricity equipment includes: charging controller, battery, inverter, wind turbine installed in the auxiliary shaft and coal mine power equipment.

[0032] In some embodiments, the wind turbine is installed in a coal mine auxiliary shaft environment, and a mounting bracket may be provided and fixed inside the coal mine auxiliary shaft.

[0033] A yaw system can also be set up to adjust the direction of the wind turbine based on the control of the controller so that the wind turbine is always facing the wind direction to maximize the wind energy. In the auxiliary shaft of the coal mine, the yaw system must be able to accurately sense changes in wind direction and make adjustments quickly to ensure power generation efficiency.

[0034] The controller of this embodiment is used to control the operation of the entire wind power generation system, including the output power control of the generator, the charging control of the battery, etc. In the auxiliary shaft of the coal mine, the controller also needs to consider the special working conditions underground, such as the coordinated work with other equipment, the operation under the safety regulations, etc.

[0035] The inverter of this embodiment converts the direct current generated by the wind turbine into alternating current to meet the power demand of the equipment in the auxiliary shaft of the coal mine, because most of the coal mine equipment may use alternating current.

[0036] During the execution of the system, when the wind flows through the blades of the wind turbine, due to the airfoil shape of the blades, a pressure difference is generated on the upper and lower surfaces of the blades, thereby driving the blades to rotate. In the auxiliary shaft of the coal mine, the wind flow is the natural wind flow generated by the mine ventilation system. The rotation of the blades drives the rotor of the generator to rotate through the main shaft. According to the principle of electromagnetic induction, an induced electromotive force is generated in the stator winding of the generator, thereby generating electrical energy. The generated electrical energy can be charged to the battery through the charging controller and the electrical energy is stored. When the equipment in the auxiliary shaft of the coal mine needs electricity, the DC power in the battery is converted into appropriate AC power through the inverter, and then transmitted to each electrical equipment through the power supply circuit.

[0037] In some specific embodiments, based on the working process of wind power generation in the auxiliary shaft of a coal mine, when the wind speed reaches the starting wind speed of the wind turbine generator of 3-5m / s, the wind turbine generator starts to rotate and the blades gradually accelerate. As the blade speed increases, the generator starts to generate electricity. The electric energy generated by the power generation is rectified and regulated by the charging controller, and then the battery is charged. During the charging process, the controller monitors the battery's voltage, current, temperature and other parameters to prevent overcharging and other situations.

[0038] In the power generation process, wind speed directly affects the power generation of wind turbines, while wind direction affects the efficiency of wind turbines in obtaining wind energy. The parameters are obtained by installing anemometers and wind vanes at appropriate locations in the auxiliary shaft.

[0039] In this embodiment, a voltage sensor, a current sensor and a power sensor can be installed at the output end of the generator to obtain the output voltage, output current and output power, and monitor the working state and power generation efficiency of the generator.

[0040] It can also detect the voltage, current, temperature and state of charge of the battery. Specifically, voltage and current sensors can be used to monitor the parameters during charging and discharging, temperature sensors are used to prevent the battery from overheating, and SOC can be calculated by integrating voltage, current and time to understand the remaining power of the battery.

[0041] If needed, the speed of the wind turbine, the operating temperature of the inverter and controller, etc. can also be monitored.

[0042] Specifically, sensors, such as the anemometer and voltage sensor mentioned above, can be installed at corresponding equipment and locations to convert physical quantities into electrical signals.

[0043] The data acquired by the sensor is transmitted to the controller via wired or wireless means. The controller processes the data and can also upload it to the power generation monitoring platform.

[0044] The controller or power generation monitoring platform can analyze, process and display the transmitted data. When the parameters are beyond the normal range, the system can issue an alarm to remind the staff to deal with it. For example, when the battery temperature is too high, the monitoring system will issue an alarm, and the staff can take measures to dissipate heat or adjust the charging strategy.

[0045] On the power generation monitoring platform, a graphical interface can be used to intuitively display the changes of various parameters over time. For example, the curve of wind speed changes over time can help staff understand the dynamic situation of wind energy resources; the generator output power curve can reflect the changes in power generation efficiency.

[0046] When the parameters exceed the normal range, the monitoring system can automatically send out an alarm, which can be in the form of a sound alarm, a pop-up window prompt, or a text message to the mobile phone of the relevant staff.

[0047] In an exemplary embodiment, the following method is also involved to implement the execution process of the wind power generation and power consumption system of the coal mine auxiliary shaft. Figure 2 As shown, Step S210, the controller obtains multiple auxiliary shaft power generation and power consumption thresholds and corresponding power generation and power consumption monitoring cycles of the power generation and power consumption interfaces of the power generation and power consumption equipment.

[0048] In this embodiment, the controller is a power generation and power consumption status monitoring strategy obtained from a power generation monitoring platform, wherein the monitoring strategy includes a plurality of auxiliary shaft power generation and power consumption thresholds and corresponding power generation and power consumption monitoring cycles.

[0049] In this embodiment, different power generation interfaces may have different power generation status monitoring strategies. Different auxiliary shaft power generation thresholds and corresponding power generation monitoring cycles may be set for different power generation interfaces.

[0050] For this embodiment, the controller obtains the power generation and power consumption status monitoring strategy from the power generation monitoring platform. The monitoring strategy is pre-set, and the corresponding auxiliary shaft power generation and power consumption thresholds and corresponding power generation and power consumption monitoring cycles are set for power generation utilization rates of 60%, 70%, 80%, 90%, etc. The power generation and power consumption thresholds can be understood as reference values ​​of the power generation, power consumption, voltage, current, etc. of the power generation and power consumption system under different power generation efficiencies, and the monitoring cycle is the inspection time interval determined according to the importance of these thresholds and the system's demand for data timeliness.

[0051] This method of setting thresholds and monitoring cycles based on different power generation utilization rates enables the system to flexibly adjust the level of monitoring sophistication and frequency according to the actual power generation situation. For example, when the power generation utilization rate is high (such as 90%), it may be necessary to monitor system parameters more frequently to ensure safe and stable operation of the system, timely discover and solve possible problems, and improve power generation efficiency and power quality; when the power generation utilization rate is low, the monitoring frequency can be appropriately reduced to reduce the communication and computing burden of the system, while also meeting basic operation monitoring needs.

[0052] For this embodiment, the power generation utilization rate η is defined to be related to the power generation power P, the power consumption power P_load and the equipment rated power P_rated, and the calculation formula is: η=(P-P_load) / P_rated×100%.

[0053] Based on historical data statistics and system performance analysis, determine the thresholds and monitoring periods corresponding to different power generation utilization rate intervals. For example, when 60% ≤ η < 70%, set the voltage threshold range as [V1_min, V1_max], the current threshold range as [I1_min, I1_max], and the monitoring period as T1.

[0054] When 70% ≤ η < 80%, the voltage threshold is adjusted to [V2_min, V2_max], the current threshold is adjusted to [I2_min, I2_max], and the monitoring period is shortened to T2 (T2 < T1), and so on.

[0055] The specific values of the thresholds and periods in this embodiment can be determined by methods such as cluster analysis and regression analysis of a large amount of historical operation data, so that the thresholds can accurately reflect the normal operation range of the system under different power generation utilization rates, and the monitoring periods can balance system performance and resource consumption.

[0056] In this embodiment, the power generation and consumption thresholds of multiple auxiliary shafts can be set according to different power generation utilization rates. For example, the power generation and consumption thresholds of the auxiliary shafts when the power generation utilization rates reach 60%, 70%, 80%, and 90%, and the corresponding different power generation and consumption monitoring periods can be set to different monitoring durations.

[0057] Step S220, the controller monitors the power generation and consumption parameters of the power generation and consumption interface at a preset acquisition period of the monitoring duration.

[0058] In this embodiment, the controller monitors the power generation and consumption parameters of the power generation and consumption interface at a preset acquisition period. The power generation and consumption parameters include but are not limited to the output voltage, current, and power of the wind turbine, the charge and discharge current, voltage, and SOC of the battery, and the operating power, current, and voltage of the electrical equipment.

[0059] Regularly monitoring the power generation and consumption parameters can timely grasp the operating state of the system and provide real-time data support for subsequent analysis and decision-making. By reasonably setting the acquisition period, the timeliness of system monitoring can be ensured.

[0060] In some specific embodiments, let the acquisition period be T_sample and the sampling frequency of the sensor be f_sample. Then the number of data points N collected in each acquisition period = T_sample × f_sample. To ensure that the collected data can accurately reflect the dynamic characteristics of the system, the sampling frequency should satisfy the Shannon sampling theorem, that is, f_sample ≥ 2f_max. Among them, f_max is the frequency of the highest frequency component in the power generation and power consumption parameters. For example, for a voltage signal with a 50Hz AC component, if its waveform information is to be accurately collected, the sampling frequency should be at least 100Hz. At the same time, the acquisition period T_sample can be optimized and adjusted according to the dynamic response characteristics and data processing capabilities of the system. For example, for a relatively stable coal mine auxiliary shaft wind power generation and power consumption system, T_sample is initially set to 5s (that is, 0.2 data are collected per second), and then fine-tuned according to the actual operating conditions.

[0061] In step S230, the controller compares the power generation parameters with multiple auxiliary shaft power generation thresholds.

[0062] In this embodiment, the controller compares the power generation parameters obtained in the current acquisition cycle with the power generation thresholds of multiple auxiliary shafts previously obtained from the power generation monitoring platform one by one. Each parameter has its corresponding threshold range, and the comparison is used to determine whether the current parameter value is within the corresponding threshold range and which threshold range has the highest matching degree.

[0063] For example, the controller uses a built-in comparison algorithm to perform logical judgment on each power generation parameter. First, the parameter value is compared with the lower and upper limits of each threshold range. If the parameter value is greater than or equal to the lower limit and less than or equal to the upper limit, the parameter is considered to be within the threshold range. Then, the threshold range with the highest matching degree with the parameter value is determined by calculating the distance between the parameter value and the center value of the threshold range or using other similarity calculation methods (such as relative error method, etc.).

[0064] The comparison operation of this embodiment can quickly determine the degree of closeness between the current system operation state and the preset different power generation utilization conditions, thereby providing a basis for the subsequent dynamic adjustment of the monitoring cycle according to the power generation utilization. By timely discovering the deviation of parameters from the threshold, it is also possible to warn in advance of possible abnormalities or failures in the system. For example, when parameters such as voltage and current continue to deviate from the normal threshold range, it may indicate that there are hidden dangers of failure in the power generation equipment or power consumption equipment, so that timely maintenance and repair can be carried out to improve the reliability and stability of the system.

[0065] Step S240: the controller determines a power generation and power usage monitoring cycle based on the comparison result to send the power generation and power usage parameters to the communication processing module according to the power generation and power usage monitoring cycle.

[0066] In this embodiment, the controller determines the power generation and power consumption monitoring cycle corresponding to the current system according to the comparison result in step S230. Once a certain auxiliary well power generation and power consumption threshold with a high degree of matching with the current power generation and power consumption parameters is determined, the system is subsequently parameter monitored and data transmitted according to the preset monitoring cycle corresponding to the threshold.

[0067] For example, if the current parameters match the threshold of 80% power generation utilization, and the corresponding monitoring period under this utilization is 3s, the controller will adjust the subsequent monitoring and data transmission period to 3s instead of using the acquisition period of the previous preset monitoring duration.

[0068] Specifically, the controller stores the mapping relationship between the power generation threshold of each auxiliary shaft and the corresponding monitoring cycle. When the matching threshold is determined, the corresponding monitoring cycle is obtained by querying the table and set as the new monitoring and data transmission time interval. At the same time, the controller starts the timer or counter to trigger subsequent operations according to the new monitoring cycle, such as obtaining the power generation parameters again and sending the parameters to the communication processing module.

[0069] The method of dynamically adjusting the monitoring cycle in this embodiment can reasonably allocate system resources according to the actual power generation and power consumption of the system, thereby improving the operating efficiency of the system. When the power generation utilization rate is high or the system operating status is more critical, shortening the monitoring cycle can more timely discover and handle potential problems, ensuring stable operation of the system and efficient power generation.

[0070] In this embodiment, the controller sets n threshold ranges and corresponding monitoring periods T_i (i = 1, 2, …, n) according to different power generation utilization rates. The matching threshold index determined in step S230 is k, and the monitoring period T_current = T_k to be currently adopted. For example, when k = 3 and T_3 = 4s, the controller sets the subsequent monitoring and data transmission period to 4s until the next parameter comparison result causes the monitoring period to change. At the same time, the operating performance indicators of the system under different monitoring periods (such as fault detection delay, equipment energy consumption, data transmission volume, etc.) can be counted. Through comprehensive analysis and optimization of these indicators, the settings of thresholds and monitoring periods can be further adjusted and improved to optimize system performance.

[0071] Step S250: the communication processing module configures the power generation and consumption parameters into a message package and sends it to the power generation monitoring platform.

[0072] In some embodiments, the communication processing module receives the power generation and electricity consumption parameters sent by the controller in real time, and encapsulates the power generation and electricity consumption parameter data in real time and sends it to the power generation monitoring platform.

[0073] It should be noted that the communication processing module is responsible for encapsulating the power generation parameters sent by the controller into messages and sending them to the power generation monitoring platform. The communication transmission of message encapsulation ensures that the power generation parameters can be accurately and timely transmitted from the controller at the coal mine auxiliary shaft site to the power generation monitoring platform.

[0074] In summary, the wind power generation and power consumption system in the auxiliary shaft of a coal mine can realize efficient monitoring of power generation and power consumption parameters, adjust monitoring strategies, and reliable data transmission, thereby improving the operating efficiency of the system.

[0075] For the low power generation utilization interval of this embodiment, the threshold adjustment on the power generation side is taken into consideration. Since the power generation utilization rate is low, it may be due to insufficient wind speed. The cut-in wind speed threshold can be appropriately lowered, for example, from the conventional 3m / s to 2.5m / s, in order to try to start the generator at a lower wind speed and improve the power generation opportunity. At the same time, the cut-out wind speed threshold is increased, for example, from 25m / s to 28m / s, and the relatively strong wind resources are fully utilized while ensuring the safety of the equipment. However, it is necessary to closely monitor the vibration and mechanical stress of the equipment to prevent damage to the equipment. In terms of the power generation threshold, the lower limit of the power generation threshold can be lowered, for example, from 10% of the rated power to 5%, so as to more accurately monitor and record low-power power generation conditions, and also provide data support for the subsequent analysis of the reasons for low power generation utilization.

[0076] In terms of threshold adjustment on the power consumption side, multiple power generation utilization intervals are set. For example, the low power generation utilization interval (0% - 40%). Due to limited power generation, non-critical power consumption equipment needs to be managed with power restrictions. For non-critical power consumption equipment, a lower power upper limit threshold is set, for example, from 80% of the rated power to 50%, giving priority to the power demand of key equipment (such as ventilation, lighting, etc.) to prevent system voltage collapse or overload of power generation equipment due to excessive power consumption.

[0077] Under low power generation utilization, priority is given to ensuring that the battery can store enough power to cope with emergencies. Appropriately reduce the upper threshold of the battery charging current, for example, from 0.2C (C is the battery capacity) to 0.15C, to prevent overcharging from affecting the battery life, while ensuring that the charging process is safe and stable, and avoiding problems such as heating caused by excessive charging current.

[0078] The medium power generation utilization range is (40% - 70%), where the cut-in wind speed and cut-out wind speed can be restored to the normal settings, such as cut-in wind speed 3m / s, cut-out wind speed 25m / s. At this time, the system is in a relatively stable power generation state, and there is no need to excessively pursue low wind speed power generation. The focus is to ensure that the equipment operates stably within the normal wind speed range and improve power generation efficiency and power quality. Set reasonable upper and lower thresholds for power generation, such as a lower limit of 30% of the rated power and an upper limit of 60% of the rated power, so as to promptly detect abnormal fluctuations in power generation and optimize the power generation system, such as adjusting the blade angle, checking the internal loss of the generator, etc., to improve power generation efficiency and stability.

[0079] For electrical equipment, maintain its normal power operating range to ensure production safety and normal operation. For non-critical electrical equipment, adjust the power limit appropriately according to the power generation situation. For example, when the power generation utilization rate is close to 40%, the power limit of non-critical equipment is set to 60% of the rated power; when the power generation utilization rate is close to 70%, it can be appropriately increased to 70%. While ensuring the power consumption of key equipment, reasonably allocate electrical energy and improve energy utilization.

[0080] The high power generation utilization rate range of this embodiment is (70% - 100%). In order to ensure the safe operation of the equipment under high load, the cut-out wind speed threshold is further reduced, for example, from 25m / s to 22m / s, to prevent strong winds from damaging the generator. At the same time, pay close attention to the wind speed change trend, make shutdown preparations in advance, and ensure equipment safety.

[0081] Here, the upper threshold of the power generation can be set to 90% of the rated power to prevent the generator from operating at full load or overload for a long time and reduce the equipment failure rate. At the same time, when the power generation is close to the upper threshold, the power regulation mechanism is activated, such as adjusting the blade pitch angle, optimizing the generator excitation, etc., to stabilize the power generation within a safe range.

[0082] Strict power limits are imposed on all power-consuming equipment to ensure that the total power consumption does not exceed 90% of the power generation. 10% of the power generation is reserved as system backup capacity to cope with sudden increases in power demand or power generation fluctuations. For non-critical power-consuming equipment, the power limit is further reduced, for example, to less than 50% of the rated power, giving priority to ensuring the stable operation and production safety of critical equipment.

[0083] Under high power generation utilization, the charging current of the battery is reduced, and the upper limit threshold of the charging current is lowered to about 0.05C, mainly to maintain the battery's power balance and avoid problems such as battery heating and water loss caused by overcharging. At the same time, it also prevents the stability of the power generation system and the power quality from being affected by excessive charging current.

[0084] In the wind power generation and power consumption system applied to the auxiliary shaft of a coal mine involved in this embodiment, the collected data is classified according to the power generation utilization rate. For example, the power generation utilization rate is calculated based on the ratio of the power generation power to the rated power of the equipment, and the power generation utilization rate is divided into different intervals, such as 60% - 70%, 70% - 80%, 80% - 90%, etc. For each interval, the distribution of various power generation and power consumption parameters is statistically analyzed, including the maximum value, minimum value, average value, Standard DeviationThrough these statistics, we can get a preliminary understanding of the approximate range of system parameters under different power generation utilization rates. Using data mining techniques, such as cluster analysis and association rule mining, we can find the intrinsic relationship between power generation utilization rate and various power generation and power consumption parameters. For example, when the power generation utilization rate is between 70% and 80%, there is a linear relationship between the generator output voltage and wind speed, or there is a linear relationship between the battery charging current and the power generation utilization rate. Quadratic Function These relationships can provide a basis for adjusting subsequent thresholds and monitoring cycles.

[0085] In order to ensure the safety and service life of the equipment, a certain safety margin needs to be set based on the rated parameters of the equipment. The size of the safety margin can be determined based on factors such as the importance of the equipment, the severity of the consequences of failure, and the reliability requirements of the system. For example, for the output voltage of the generator, based on the rated voltage, a 10% fluctuation is used as a safety margin within the normal operating range; for the charging current of the battery, 80% of the maximum charging current is set as the upper limit of the normal charging threshold to avoid damage to the battery caused by overcharging.

[0086] According to the above analysis, a set of rule-based adjustment strategies is formulated. For example, if the power generation utilization rate is at a high level (such as above 80%) for a period of time (such as 10 minutes) and the load fluctuates greatly (the fluctuation range exceeds 30%), the power generation threshold range is reduced by 10% (such as the voltage threshold is adjusted from [V1_min, V1_max] to [0.9V1_min,0.9V1_max]), and the monitoring cycle is shortened to half of the original. If the power generation utilization rate is low (such as below 60%) and the environmental conditions are stable (temperature changes within ±5℃), the power generation threshold range can be appropriately relaxed (such as the upper limit of the current threshold is increased by 20%), and the monitoring cycle is extended to 1.5 times the original.

[0087] like Figure 3 As shown, a flow chart of a method for comparing power generation and power consumption parameters with multiple auxiliary shaft power generation and power consumption thresholds to obtain a comparison result of a second auxiliary shaft power generation and power consumption threshold in a coal mine auxiliary shaft wind power generation and power consumption system in an embodiment of the present disclosure.

[0088] In step S310, the controller obtains multiple auxiliary well power generation and power consumption thresholds of the power generation and power consumption interfaces of the power generation and power consumption equipment arranged from small to large from the configuration information retrieved from the power generation monitoring platform, and the power generation and power consumption monitoring periods corresponding to the multiple auxiliary well power generation and power consumption thresholds arranged from small to large decrease successively, wherein the first auxiliary well power generation and power consumption threshold among the multiple auxiliary well power generation and power consumption thresholds arranged from small to large is used as the first auxiliary well power generation and power consumption threshold, and the power generation and power consumption monitoring period corresponding to the first auxiliary well power generation and power consumption threshold is the first power generation and power consumption monitoring period.

[0089] In this embodiment, multiple auxiliary shaft power generation thresholds arranged from small to large can be determined according to the power generation utilization rate, for example, 60%, 70%, 80%, 90% power generation utilization rates and corresponding different power generation monitoring cycles can be set to minute-level, second-level, sub-second-level and preset monitoring duration power generation monitoring cycles. Specifically, in some embodiments, the first auxiliary shaft power generation threshold, that is, the power generation utilization rate of 60%, is used as the first auxiliary shaft power generation threshold, and the corresponding minute-level power generation monitoring cycle is used as the first power generation monitoring cycle.

[0090] The power generation monitoring platform stores the configuration information of thresholds and cycles based on the analysis and optimization of the wind power generation and power consumption system in the auxiliary shaft of the coal mine. The controller sends a request to the platform, and the platform sends the relevant data back to the controller, which stores the data in its memory for use in subsequent steps.

[0091] In step S310, the threshold sequence is set to Tn, the corresponding monitoring period sequence is set to Pn, and the monitoring period is set in an exponential decay or linear decreasing manner according to the dynamic characteristics and response requirements of the system; The linear decline model is used as , P1 is the first power generation monitoring period, k is the decreasing coefficient, and n is the threshold number. As n increases, the monitoring period Pn gradually decreases, ensuring more frequent monitoring near the critical threshold.

[0092] This setting method can allocate monitoring resources according to the importance and urgency of the system operation status. When the system operation parameters are close to the normal range, a longer monitoring cycle is used to reduce unnecessary monitoring operations, thereby saving the controller's computing resources and system energy consumption; when the parameters are close to or exceed more critical thresholds, shortening the monitoring cycle can more promptly discover potential problems and take measures to improve the safety and stability of the system. For example, when the power generation parameters are relatively stable and low, high-frequency monitoring is not required. When the parameters gradually increase and approach or exceed some important thresholds, quickly increasing the monitoring frequency can ensure that abnormal changes are captured in time to avoid failures.

[0093] Step S320: The controller monitors the power generation and power consumption parameters of the power generation and power consumption interface in an acquisition cycle with a preset monitoring time.

[0094] In this embodiment, the sensor continuously measures the power generation and power consumption parameters and converts them into electrical signals. The controller reads the digital signals from the sensor and stores them in a specific register or memory area for subsequent comparison and analysis. In this way, the preset fixed acquisition cycle provides a basic monitoring frequency for the system, ensuring that the system can continuously and stably obtain the power generation and power consumption parameters under normal circumstances, and maintain a basic understanding of the system operation status even when the parameters have not reached the critical threshold.

[0095] In step S330, the controller determines whether the power generation parameter reaches the power generation threshold of the first auxiliary shaft. If yes, step S340 is executed. If no, step S350 is executed.

[0096] Here, the controller compares the collected power generation and power consumption parameter value with the pre-stored power generation and power consumption threshold of the first auxiliary well through the built-in comparison logic circuit or software algorithm. If the parameter value is greater than or equal to the power generation and power consumption threshold of the first auxiliary well, it is judged as "yes", that is, the power generation and power consumption threshold of the first auxiliary well is reached; if the parameter value is less than the power generation and power consumption threshold of the first auxiliary well, it is judged as "no".

[0097] Specifically, in step S330, assuming that the power generation parameter is x, and the power generation threshold of the first auxiliary shaft is T1, the comparison result R is expressed by a logical expression as follows: , where R=1 means that the power generation threshold of the first auxiliary well has been reached, and R=0 means that it has not been reached.

[0098] By comparing the operation, it is possible to quickly determine whether the current operating status of the system has reached a level that requires further attention. If the power consumption threshold of the first auxiliary shaft has not been reached, it means that the system is in a relatively stable and low-risk operating state, and monitoring can continue according to the preset basic acquisition cycle; if the power consumption threshold of the first auxiliary shaft has been reached, the monitoring and analysis process needs to be started to ensure the safe and stable operation of the system.

[0099] Step S340, if the power generation parameter reaches the first auxiliary well power generation threshold, the controller compares the power generation parameter with the auxiliary well power generation thresholds after the first auxiliary well power generation threshold in order of the auxiliary well power generation thresholds arranged from small to large.

[0100] In this embodiment, after determining that the power generation parameter reaches the power generation threshold of the first auxiliary shaft, the controller starts a loop comparison program. According to the pre-stored threshold sequence order, the thresholds are taken out one by one and compared with the current power generation parameter until a threshold greater than the current power generation parameter is found or all thresholds are compared. During the comparison process, a variable is used to record the maximum threshold currently reached. Each time a comparison is made, if the current power generation parameter is greater than the threshold being compared, the recorded maximum threshold variable is updated. Comparing the thresholds in sequence can make full use of the orderliness of the thresholds, reduce the number of unnecessary comparisons, and improve the calculation efficiency of the controller.

[0101] Step S350: If the power generation and consumption parameter does not reach the power generation and consumption threshold of the first auxiliary well, the controller uses the power generation and consumption threshold of the first auxiliary well as the power generation and consumption threshold of the second auxiliary well.

[0102] In this embodiment, if the smallest auxiliary well power generation and power consumption threshold among multiple auxiliary well power generation and power consumption thresholds is not reached, it means that the power generation and power consumption parameters of the power generation and power consumption interface within the current acquisition cycle are normal. Therefore, the power generation and power consumption parameter data can be sent according to the normal power generation and power consumption monitoring cycle, that is, the first power generation and power consumption monitoring cycle corresponding to the smallest auxiliary well power generation and power consumption threshold, that is, the maximum power generation and power consumption monitoring cycle among the power generation and power consumption monitoring cycles corresponding to multiple auxiliary well power generation and power consumption thresholds.

[0103] It should be noted that when the controller determines that the power generation and power consumption parameters do not reach the power generation and power consumption threshold of the first auxiliary well, the power generation and power consumption threshold of the first auxiliary well is directly assigned to a variable for storing the power generation and power consumption threshold of the second auxiliary well. This variable will be used in subsequent steps to determine the monitoring cycle and perform operations such as parameter comparison to ensure the consistency and stability of the monitoring and control logic of the system in a low operating state. It can enable the system to maintain a relatively low monitoring frequency and energy consumption in a stable low operating state.

[0104] In step S360, the controller obtains a comparison result of the power consumption threshold of the second auxiliary well.

[0105] In this embodiment, according to the above steps, if the first auxiliary well power generation threshold is reached, the maximum auxiliary well power generation threshold reached by comparing the controller with multiple auxiliary well power generation thresholds is used as the comparison result of the second auxiliary well power generation threshold.

[0106] In this embodiment, according to the aforementioned steps, if the power consumption threshold of the first auxiliary well is not reached, the power consumption threshold of the first auxiliary well is used as the comparison result of the power consumption threshold of the second auxiliary well.

[0107] Here, according to the comparison results of the previous steps, if the power generation and power consumption parameters have reached the power generation and power consumption threshold of the first auxiliary well, then the maximum power generation and power consumption threshold of the auxiliary well reached after comparing the controller with multiple power generation and power consumption thresholds of the auxiliary wells is used as the comparison result of the power generation and power consumption threshold of the second auxiliary well. If the power generation and power consumption parameters do not reach the power generation and power consumption threshold of the first auxiliary well, then the power generation and power consumption threshold of the second auxiliary well is the power generation and power consumption threshold of the first auxiliary well, and the comparison result is the threshold itself. This enables the system to accurately and consistently adjust the monitoring and control strategies according to the comparison between the current power generation and power consumption parameters and the thresholds. This improves the overall performance and reliability of the system, and also facilitates the debugging, maintenance, and optimization and upgrading of the system.

[0108] Through the above steps, the wind power generation and power consumption system of the coal mine auxiliary shaft can adjust the monitoring strategy and control measures according to the real-time changes in the power generation and power consumption parameters, realize the intelligent management of the system, improve the power generation efficiency and ensure the safety of power consumption.

[0109] Figure 4 Another implementation method for wind power generation and power consumption system in coal mine auxiliary shaft is shown. The method includes: Step S410, the controller obtains multiple auxiliary shaft power generation thresholds, corresponding power generation monitoring cycles and time thresholds of the power generation interface of the power generation equipment from the configuration information retrieved from the power generation monitoring platform.

[0110] In this embodiment, the controller retrieves the configuration information from the power generation monitoring platform to obtain multiple auxiliary shaft power generation thresholds, corresponding power generation monitoring cycles, and time thresholds of the power generation interface of the power generation equipment. Through the power generation monitoring platform, the thresholds, monitoring cycles, and time thresholds can be easily updated and optimized remotely according to the actual operation of the wind power generation and power consumption system in the auxiliary shaft of the coal mine, equipment performance changes, or safety requirements, without the need for tedious manual modifications on the controller.

[0111] In step S420, the controller compares the power generation parameters with the power generation thresholds of the plurality of auxiliary wells to obtain a comparison result of the corresponding power generation threshold of the second auxiliary well.

[0112] In this embodiment, the power generation and power consumption parameters of the power generation and power consumption interface currently monitored are compared one by one with the power generation and power consumption thresholds of multiple auxiliary shafts obtained from the power generation monitoring platform. Through the comparison, the threshold with the highest matching degree with the current power generation and power consumption parameters is determined, that is, the power generation and power consumption threshold of the second auxiliary shaft, and the corresponding comparison results are obtained (for example, determining in which threshold interval the power generation and power consumption parameters are located, and whether certain key thresholds are reached or exceeded).

[0113] Specifically, let the power generation parameter be x, the power generation threshold of the i-th auxiliary shaft be X_i, and the total number of thresholds be n; the comparison process is: Set the index i = 1 and the flag reached = false, indicating that no threshold has been reached yet; Loop comparison: When i <= n and X >= X_i, perform the following operations: reached = true Update the currently reached maximum threshold index max_index = i i = i + 1 When i > n or X < X_i, break out of the loop; The final result is: If reached = true, the power generation and consumption threshold of the second auxiliary shaft is X_max_index, and the comparison result is the information of the reached threshold; If reached = false, the power generation and consumption threshold of the second auxiliary shaft is X_1 (the power generation and consumption threshold of the first auxiliary shaft), and the comparison result is the information that no threshold has been reached.

[0114] In this embodiment, by timely understanding the relationship between the power generation and consumption parameters and the preset thresholds, the system can determine whether the current operating state is normal, whether it is close to or exceeds some key operating limits, thereby providing a basis for further monitoring cycle adjustment and fault warning.

[0115] Step S430, determine whether the time when the power generation and consumption parameters reach the power generation and consumption threshold of the first auxiliary shaft exceeds the time threshold.

[0116] After the controller of this embodiment determines that the power generation and consumption parameters reach the power generation and consumption threshold of the first auxiliary shaft, it starts timing and determines whether the time when the power generation and consumption parameters remain above (including equal to) this threshold exceeds the preset time threshold. For example, if the power generation and consumption threshold of the first auxiliary shaft is the parameter value corresponding to 70% power generation utilization rate, when the power generation and consumption parameters reach this threshold, the controller records the start time, and then continuously monitors the parameters until the parameters are lower than this threshold or exceed the time threshold.

[0117] In this way, introducing the judgment mechanism of the time threshold enables the system to distinguish between short-term fluctuations and long-term continuous abnormal conditions of the power generation and consumption parameters. By setting the time threshold, only when the parameters continuously exceed the threshold for a certain time, it is considered that the system may be in a state that requires further attention or adjustment, avoiding unnecessary monitoring cycle adjustment and system false alarms caused by frequent short-term fluctuations, and improving the stability and reliability of the system.

[0118] Step S440, if the time when the power generation parameters reach the second auxiliary well power generation threshold exceeds the time threshold, the controller determines the second power generation monitoring period based on the second auxiliary well power generation threshold to send the power generation parameters to the communication processing module according to the second power generation monitoring period.

[0119] In this embodiment, after determining that the power generation and power consumption parameters have reached the power generation and power consumption threshold of the second auxiliary shaft and have exceeded the time threshold, the controller obtains the second power generation and power consumption monitoring period corresponding to the power generation and power consumption threshold of the second auxiliary shaft by querying the correspondence between the pre-stored threshold and the monitoring period; The controller adjusts the internal timer settings or data collection trigger mechanism, collects power generation and power consumption parameters according to the new monitoring cycle, and sends the collected data to the communication processing module; The threshold value of the power consumption of the second auxiliary shaft is X_max, and the corresponding monitoring period of the second power consumption is T_max. According to the performance requirements of the system and the statistical analysis of historical data, the functional relationship between the threshold value and the monitoring period is established: T_max = a - b × X_max, where a and b are coefficients obtained by fitting the preset number of historical data. Once X_max is determined, T_max is calculated according to this formula.

[0120] It can be seen that after the controller determines that the power generation parameters have reached the power generation threshold of the second auxiliary shaft and exceeded the time threshold, it queries the pre-stored corresponding relationship table between the threshold and the monitoring period to obtain the second power generation monitoring period corresponding to the power generation threshold of the second auxiliary shaft. Then, the controller adjusts the internal timer setting or data acquisition trigger mechanism, collects the power generation parameters according to the new monitoring period, and sends the collected data to the communication processing module. At the same time, the controller can also take some other auxiliary measures, such as increasing the sampling frequency of the sensor, increasing the status monitoring of key equipment, etc., to meet the monitoring needs of the system under high load or abnormal operation.

[0121] Dynamically adjusting the monitoring cycle according to the continued abnormal conditions of power generation and power consumption parameters can enable the system to grasp the changes in the system's operating status more timely and accurately, especially when the system is in high power generation utilization or other critical operating states.

[0122] The calculation method of this embodiment is: let the threshold value of power generation in the second auxiliary shaft be X_max, and the corresponding monitoring period of power generation in the second auxiliary shaft be T_max. According to the performance requirements of the system and the statistical analysis of historical data, a functional relationship between the threshold value and the monitoring period is established, for example, a linear relationship is adopted: T_max = a - b × X_max, where a and b are coefficients obtained by fitting a large amount of historical data. After X_max is determined, T_max can be calculated according to the formula. At the same time, in practical applications, in order to ensure the rationality and effectiveness of the monitoring period, the calculation results can be subject to certain range restrictions and adjustments, such as setting the minimum monitoring period to 1s and the maximum monitoring period to 10s.

[0123] Step S450, if the time when the power generation parameter reaches the power generation threshold of the second auxiliary well does not exceed the time threshold, the controller sends the power generation parameter to the communication processing module based on the first power generation monitoring cycle in accordance with the first power generation monitoring cycle.

[0124] In this embodiment, after determining that the power generation and power consumption parameters do not exceed the time threshold, the controller maintains the previous monitoring and data transmission mechanism unchanged, that is, according to the preset first power generation and power consumption monitoring cycle, the power generation and power consumption parameters are obtained from the sensor at regular intervals and transmitted to the communication processing module. In this process, the controller continues to monitor the changes in the power generation and power consumption parameters, and waits for the next threshold comparison and time threshold judgment to determine whether it is necessary to adjust the monitoring cycle or take other measures.

[0125] Step S460: The communication processing module encapsulates the power generation parameters into a message and sends it to the power generation monitoring platform.

[0126] Through the coordinated work of the above steps, the wind power generation and power consumption system in the auxiliary shaft of the coal mine can realize efficient monitoring of power generation and power consumption parameters, flexible adjustment of monitoring cycles and reliable data transmission, improve the operating efficiency, stability and intelligence level of the system, and provide strong guarantees for the safe production and energy utilization of coal mines.

[0127] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wind power generation and power consumption system applied to a coal mine auxiliary shaft, characterized in that: include: Power generation and electricity consumption data acquisition devices, power generation and electricity consumption equipment, power generation monitoring platforms and controllers; Power generation equipment includes: charge controller, battery, inverter, wind turbine installed inside the auxiliary shaft and coal mine power equipment; The controller obtains the wind speed in the auxiliary shaft through the power generation and consumption data acquisition device. When the wind speed is greater than the preset wind speed threshold, the wind turbine starts to generate electricity; The wind turbine generator is connected to the battery through a charging controller to charge the battery; The controller monitors the voltage, current and temperature parameters of the battery through the power generation and consumption data acquisition device; When the coal mine power device in the coal mine auxiliary shaft uses electricity, the battery transmits power to the coal mine power device through the inverter; When the wind speed in the auxiliary shaft is lower than the preset wind speed threshold, the controller controls the wind turbine to stop rotating, and when the remaining power of the battery is lower than the preset power threshold, the controller controls the battery to stop transmitting electrical energy.

2. The wind power generation and power consumption system for coal mine auxiliary shaft according to claim 1 is characterized in that: The power generation and consumption data collection device includes: Anemometers and wind vanes installed in the auxiliary shaft to obtain wind speed and direction; Install voltage sensors, current sensors and power sensors at the output end of the wind turbine generator to obtain and monitor the working status and power generation efficiency of the generator; Install voltage and current sensors and temperature sensors at the output end of the battery; Speed ​​sensor and temperature sensor installed on the wind turbine.

3. The wind power generation and power consumption system for coal mine auxiliary shaft according to claim 1 is characterized in that: The controller obtains multiple auxiliary shaft power generation and power consumption thresholds and corresponding power generation and power consumption monitoring cycles of the power generation and power consumption interface of the power generation and power consumption equipment; monitors the power generation and power consumption parameters of the power generation and power consumption interface with an acquisition cycle of a preset monitoring time; The controller compares the power generation and consumption parameters with a plurality of auxiliary shaft power generation and consumption thresholds; The controller determines a power generation and power consumption monitoring cycle based on the comparison result to send the power generation and power consumption parameters to the communication processing module according to the power generation and power consumption monitoring cycle; The communication processing module configures the power generation parameters into message packages and sends them to the power generation monitoring platform.

4. The wind power generation and power consumption system for coal mine auxiliary shaft according to claim 3 is characterized in that: The controller calculates the power generation utilization factor η based on the power generation power P, power consumption power P_load and equipment rated power P_rated. The calculation formula is: η = (P - P_load) / P_rated × 100%; Based on historical data statistics and system performance analysis, determine the thresholds and monitoring cycles corresponding to different power generation utilization intervals; The controller sets n threshold ranges and corresponding monitoring periods Ti (i = 1, 2, …, n) according to different power generation utilization rates, and determines that the matching threshold index is k, then the current monitoring period T_current = T_k should be adopted.

5. The wind power generation and power consumption system applied to the auxiliary shaft of a coal mine according to claim 3 is characterized in that: The controller is based on the setting period T_sample, the sampling frequency of the sensor is f_sample, and the number of data points collected in each acquisition cycle is N = T_sample × f_sample; f_sample ≥ 2f_max, where f_max is the frequency of the highest frequency component in the power generation and consumption parameters; Obtain the period T_sample and optimize and adjust it according to the dynamic response characteristics and data processing capabilities of the system; For any power generation parameter X, let the power generation threshold range of the i-th auxiliary shaft be [X_i_min, X_i_max], and the center value of the threshold range be X_i_center= (X_i_min+X_i_max) / 2; Calculate the matching index M_i between parameter X and the i-th threshold range; When Mi is less than a certain set threshold, an early warning signal is issued to indicate that the system is operating abnormally.

6. The wind power generation and power consumption system applied to the auxiliary shaft of a coal mine according to claim 3 is characterized in that: Step S310, the controller obtains multiple auxiliary shaft power generation thresholds of the power generation interface of the power generation equipment arranged from small to large from the configuration information retrieved from the power generation monitoring platform, and the power generation monitoring cycles corresponding to the multiple auxiliary shaft power generation thresholds arranged from small to large are reduced in sequence; Step S320, the controller monitors the power generation and power consumption parameters of the power generation and power consumption interface with an acquisition cycle of a preset monitoring time; Step S330, the controller determines whether the power generation parameter reaches the power generation threshold of the first auxiliary shaft; if so, execute step S340; if not, execute step S350; Step S340, if the power generation parameter reaches the power generation threshold of the first auxiliary well, the controller compares the power generation parameter with the power generation thresholds of the auxiliary wells after the first auxiliary well power generation threshold in order of the power generation thresholds of the auxiliary wells arranged from small to large; Step S350, if the power generation and consumption parameter does not reach the power generation and consumption threshold of the first auxiliary well, the controller uses the power generation and consumption threshold of the first auxiliary well as the power generation and consumption threshold of the second auxiliary well; In step S360, the controller obtains a comparison result of the power consumption threshold of the second auxiliary well.

7. The wind power generation and power consumption system for coal mine auxiliary shaft according to claim 6 is characterized in that: In step S310, the threshold sequence is set to Tn, and the corresponding monitoring period sequence is set to Pn. According to the dynamic characteristics and response requirements of the system, the monitoring period is set in an exponential decay or linear decreasing manner; The linear decline model is , P1 is the first power generation and consumption monitoring period, k is the decreasing coefficient, and n is the sequence number of the threshold value; In step S330, assuming that the power generation parameter is x and the power generation threshold of the first auxiliary shaft is T1, the comparison result R is expressed by a logical expression as follows: , where R=1 means that the power generation threshold of the first auxiliary well has been reached, and R=0 means that it has not been reached.

8. The wind power generation and power consumption system applied to the auxiliary shaft of a coal mine according to claim 3 is characterized in that: Step S410, the controller obtains multiple auxiliary shaft power generation thresholds, corresponding power generation monitoring cycles and time thresholds of the power generation interface of the power generation equipment from the configuration information retrieved from the power generation monitoring platform; Step S420, the controller compares the power generation parameters with the power generation thresholds of the plurality of auxiliary shafts to obtain a comparison result of the corresponding power generation threshold of the second auxiliary shaft; Step S430, determining whether the time for the power generation parameter to reach the power generation threshold of the first auxiliary shaft exceeds the time threshold; Step S440, if the time for the power generation parameter to reach the power generation threshold of the second auxiliary shaft exceeds the time threshold, the controller determines the second power generation monitoring period based on the power generation threshold of the second auxiliary shaft to send the power generation parameter to the communication processing module according to the second power generation monitoring period; Step S450, if the time for the power generation parameter to reach the power generation threshold of the second auxiliary shaft does not exceed the time threshold, the controller sends the power generation parameter to the communication processing module according to the first power generation monitoring cycle based on the first power generation monitoring cycle; Step S460: The communication processing module encapsulates the power generation parameters into a message and sends it to the power generation monitoring platform.

9. The wind power generation and power consumption system for coal mine auxiliary shaft according to claim 8 is characterized in that: In step S420, Assume that the power generation parameter is x, the power generation threshold of the i-th auxiliary shaft is X_i, and the total number of thresholds is n; the comparison process is: Set index i = 1 and flag bit reached = false, indicating that no threshold has been reached; Cyclic comparison: When i<=n, and X>= X_i, perform the following operations: reached = true Update the current maximum threshold index max_index = i i = i + 1 When i > n or X < X_i, exit the loop; The final result is: if reached = true, the power consumption threshold of the second auxiliary well is X_max_index, and the comparison result is the threshold information reached; If reached = false, the power consumption threshold of the second auxiliary well is X_1 (the power consumption threshold of the first auxiliary well), and the comparison result is the information that no threshold has been reached.

10. The wind power generation and power consumption system applied to the auxiliary shaft of a coal mine according to claim 8, characterized in that: In step S440, after determining that the power generation and power consumption parameter reaches the power generation and power consumption threshold of the second auxiliary shaft and exceeds the time threshold, the controller obtains the second power generation and power consumption monitoring period corresponding to the power generation and power consumption threshold of the second auxiliary shaft by querying the correspondence between the pre-stored threshold and the monitoring period; The controller adjusts the internal timer settings or data collection trigger mechanism, collects power generation and power consumption parameters according to the new monitoring cycle, and sends the collected data to the communication processing module; The threshold value of the power consumption of the second auxiliary shaft is X_max, and the corresponding monitoring period of the second power consumption is T_max. According to the performance requirements of the system and the statistical analysis of historical data, the functional relationship between the threshold value and the monitoring period is established: T_max = a - b× X_max, where a and b are coefficients obtained by fitting the preset number of historical data. Once X_max is determined, T_max is calculated according to this formula.

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