Portable power station remote control system

Abstract

The invention discloses a portable power station remote control system, and relates to the technical field of control systems, and the system comprises a power generation module which is used for carrying out the collection and dynamic tracking management of power generation energy, tracking and optimizing the power supply power, adjusting the electric energy index, and obtaining the optimal power supply output efficiency of a power station; the intelligent control module is used for performing data management, intelligent interface and task allocation management on the power supply power data set by using a data hierarchical storage strategy; the remote operation and maintenance module is used for further optimizing the power of the power supply, keeping the balance of electric energy transmission time delay and energy, and carrying out lossless channel switching on a remote transmission channel; according to the invention, the power efficiency of a power generation power supply can be greatly improved, the communication time delay is guaranteed, the power generation life of the power supply is greatly prolonged, and the power transmission process is more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of control systems, and in particular to a portable power station remote control system. Background Art

[0002] In order to improve the management efficiency of power plants, reduce operating costs and ensure the normal operation of equipment, remote control technology has gradually become an indispensable technical means in the power industry. The emergence of portable power plant remote control systems is an innovative solution to this problem. Through the remote control system, technicians can monitor, operate and diagnose faults in power plants through portable devices without having to visit the site in person, thereby improving the management efficiency of power plants, reducing maintenance costs, and reducing the risk of personnel being exposed to dangerous environments.

[0003] At present, the Chinese invention patent with application number CN202411353033.4 discloses an intelligent photovoltaic power station management system and method. The second management module determines whether to manage the operation data in the suspected operation data sequence according to the suspected data factor, which can fully consider the actual situation and safety management requirements of the photovoltaic power station, and realize the functions of real-time monitoring, remote control and scheduling of the operation status of photovoltaic power station equipment, thereby improving the safety and reliability of photovoltaic power stations and reducing the incidence of safety accidents. However, the power efficiency of the power generation in the prior art is not high, the remote communication delay is unbalanced, the power generation life of the power supply is not long, and the power transmission process is not stable. Summary of the invention

[0004] The technical problem solved by the present invention is that: the power efficiency of the power source for power generation in the prior art is low, the remote communication delay is unbalanced, the power generation life is short, and the power transmission process is unstable.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a portable power station remote control system, comprising a power generation module, an intelligent control module, a remote operation and maintenance module and a visualization module; The power generation module is used to collect and dynamically track the power generation energy, track and optimize the power supply power, and adjust the power index to obtain the optimal power station power output efficiency; The intelligent control module is used to perform data management, intelligent interface and task allocation management on the power data set using a data tiered storage strategy; The remote operation and maintenance module is used to further optimize the power supply power, maintain the balance of power transmission delay and energy, and perform lossless channel switching on the remote transmission channel; The visualization module is used to exchange power plant control data with users.

[0006] Preferably, the power generation module includes a power intelligent tracking unit and a power optimization unit; The power intelligent tracking unit comprises: The sensors are used to collect the efficiency of photovoltaic modules, real-time irradiance, photovoltaic panel area, battery temperature and factory temperature coefficient of the power supply from the portable power station; The power tracking model is used to dynamically track the power supply in real time, and the real-time power supply power is recorded in the power supply power data set. The state function mathematical expression of the power tracking model is: ; in, is the power supply, is the photovoltaic module efficiency, is the real-time irradiance, is the photovoltaic panel area, is the factory temperature coefficient of the power supply, is the battery temperature, The standard temperature is 25 degrees Celsius; The power optimization unit comprises: The power supply working interface point is tracked by a power tracking model, and the duty cycle of the DC converter is adjusted in real time using an MPPT controller, and the duty cycle is adjusted to be at the top of the maximum power curve of the power supply working interface point.

[0007] Preferably, the intelligent control module includes a central unit, an execution unit and an interface unit; The central unit comprises: The power supply power data set is managed using a data tiered storage strategy to obtain a power supply time series power database, wherein the tiered storage strategy includes: When the power supply power data validity is less than 7 days, the power supply power is input into the hot data queue; When the power supply power data validity is greater than or equal to 7 days and less than or equal to 3 months, the power supply power is input into the warm data queue; When the data validity of the power source power is greater than 3 months, the power source power is input into the cold data queue; The data calling methods in the hot data queue, warm data queue and cold data queue all adopt a multi-level feedback queue scheduling algorithm, setting the hot data queue priority to the first priority, the warm data queue to the second priority, and the cold data queue to the third priority.

[0008] Preferably, the execution unit includes: Intelligent programming management of power station control interface is carried out through matlab and PLC hardware control module to build a programming control network, which includes task allocation for portable power station execution cycle using IEC 61131-3 standard programming; The allocation logic includes: When the execution period is less than the first period, the task is controlled by using the circuit breaker; When the execution cycle is greater than the first cycle and less than the second cycle, the power tracking model is parameterized, the parameters including the efficiency of the photovoltaic module of the power supply, the real-time irradiance, the photovoltaic panel area, the battery temperature and the factory temperature coefficient of the power supply, and the parameters are manually adjusted to obtain the power supply power change rate, which is obtained by the ratio of the absolute value of the difference between the power supply power after the adjustment of the parameters and the original power supply power to the original power supply power; When the execution cycle is greater than the second cycle, the current power supply power is output.

[0009] Preferably, performing time synchronization control on the circuit breaker comprises: Preset n groups of operation sequences, set the opening time ≤20ms, the closing synchronization error ≤1ms, and use MOSFET drive circuit fast switching technology to control the discreteness of the action response time within 0.5ms.

[0010] Preferably, the interface unit comprises: Huffman coding is performed on the interface of the portable power station to obtain a non-repetitive interface code, the non-repetitive interface code is linked to the PLC hardware control module, a single execution operation precoding is set, and an instruction execution interface set is obtained.

[0011] Preferably, the remote operation and maintenance module includes a delay guarantee unit, a multi-point balancing unit and a remote transmission unit; The delay guarantee unit includes time decomposing the remote data transmission delay and performing PTP clock synchronization on the decomposed time period to obtain the effect of reducing the remote transmission error delay. The time decomposition mathematical expression is: ; in, is the total delay, is the network propagation delay, It is the operation time of the PLC hardware control module. It is the response execution time of the instruction execution interface.

[0012] Preferably, the multi-point balancing unit is used to perform multi-point active balancing on the power supply power, and the multi-point active balancing includes: The dynamic adjustment range of the balanced current of the portable power station power supply is limited to between 0.1A and 10A, a bidirectional DC / DC converter is used to realize the energy transfer of the portable power station power, the current is adjusted according to the current power of the power supply and the current voltage difference measured by the sensor, the step of adjusting the duty cycle in the power optimization unit is replaced by adjusting the current, and the current value is adjusted to when the power supply is at the maximum value of the current voltage difference and the current power.

[0013] Preferably, the remote transmission unit comprises: Based on IEEE 802.1Q protocol, the remote transmission network is divided into m virtual LANs, and the priority marking technology is used to control the priority of data traffic; The channels of remote power transmission are switched through dual-channel redundant transmission. The automatic channel switching logic includes: When the total delay of the main channel is greater than the preset delay threshold or the bit error rate of the receiving instruction end of the currently used interface is greater than the preset bit error rate threshold, the buffered data queue currently queuing on the main channel is directly converted to the standby channel; When the total delay of the main channel is less than or equal to the preset delay threshold and the bit error rate of the instruction receiving end of the currently used interface is not greater than the preset bit error rate threshold, the optical fiber TCP / IP channel is maintained.

[0014] Preferably, the visualization module is used to display the power supply power, current transmission rate, current usage interface and total charging energy of the portable power station on the user interface, and the power station control data includes the power supply power, current transmission rate, current usage interface and total charging energy of the portable power station.

[0015] The beneficial effects of the present invention are as follows: the power efficiency of the power source for power generation is greatly improved, the communication delay is guaranteed, the power generation life of the power source is greatly extended, and the power transmission process is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A basic flow chart of a portable power station remote control system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings. It is obvious that the described embodiments are only part of the embodiments of the present invention, but not all of the embodiments.

[0018] Reference Figure 1 , as an embodiment of the present invention, provides a portable power station remote control system, including a power generation module, an intelligent control module, a remote operation and maintenance module and a visualization module; The power generation module is used to collect and dynamically track the power generation energy, track and optimize the power supply power, and adjust the power index to obtain the optimal power output efficiency of the power station; The intelligent control module is used to manage the power data set using a data tiered storage strategy, intelligent interface and task allocation management; The remote operation and maintenance module is used to further optimize the power supply, maintain the balance of power transmission delay and energy, and perform lossless channel switching on remote transmission channels; The visualization module is used to interact with users about power plant control data.

[0019] The power generation module includes a power intelligent tracking unit and a power optimization unit; The power intelligent tracking unit includes: The sensors are used to collect the efficiency of photovoltaic modules, real-time irradiance, photovoltaic panel area, battery temperature and factory temperature coefficient of the power supply from the portable power station; The power tracking model is used to dynamically track the power supply in real time, and the real-time power supply power is recorded in the power supply power data set. The state function mathematical expression of the power tracking model is: ; in, is the power supply, is the photovoltaic module efficiency, is the real-time irradiance, is the photovoltaic panel area, is the factory temperature coefficient of the power supply, is the battery temperature, The standard temperature is 25 degrees Celsius; The power optimization unit includes: The power supply working interface point is tracked through the power tracking model, and the duty cycle of the DC converter is adjusted in real time using the MPPT controller. When the duty cycle is adjusted to the top of the maximum power curve at the power supply working interface point, the duty cycle is obtained by the ratio of the time that the DC converter is in the on state during the conversion cycle to the total cycle of the DC converter. This makes the power supply of the portable power station actively balanced, that is, the voltage difference is optimized and reduced, and the temperature compensation charging temperature difference is reduced, and the power supply charging is more stable.

[0020] The intelligent control module includes a central unit, an execution unit and an interface unit; The central unit includes: The power data set is managed using a data tiered storage strategy to obtain a power time series power database. The tiered storage strategy includes: When the power data validity is less than 7 days, the power is entered into the hot data queue; When the power data validity is greater than or equal to 7 days and less than or equal to 3 months, the power data is entered into the warm data queue; When the power data is older than 3 months, the power is put into the cold data queue; The data calling method in the hot data queue, warm data queue and cold data queue all adopts a multi-level feedback queue scheduling algorithm, setting the hot data queue priority to the first priority, the warm data queue to the second priority, and the cold data queue to the third priority.

[0021] The execution units include: Intelligent programming management of power station control interface is carried out through matlab and PLC hardware control module to build programming control network, which includes task allocation for portable power station execution cycle using IEC 61131-3 standard programming; The allocation logic includes: When the execution period is less than the first period, the task is controlled by using the circuit breaker; When the execution cycle is greater than the first cycle and less than the second cycle, the parameters of the power tracking model are adjusted. The parameters include the efficiency of the photovoltaic module of the power source, the real-time irradiance, the area of ​​the photovoltaic panel, the battery temperature and the factory temperature coefficient of the power source. The power change rate is obtained by manually adjusting the parameters. The power change rate is obtained by the ratio of the absolute value of the difference between the power source power after adjusting the parameters and the original power source power to the original power source power. When the execution cycle is greater than the second cycle, the current power supply power is output.

[0022] Time synchronization control of circuit breakers includes: Preset n groups of operation sequences, set the opening time ≤20ms, the closing synchronization error ≤1ms, and use MOSFET drive circuit fast switching technology to control the discreteness of the action response time within 0.5ms.

[0023] The interface unit includes: Huffman coding is performed on the interface of the portable power station to obtain a non-repetitive interface code, the non-repetitive interface code is linked to the PLC hardware control module, a single execution operation pre-coding is set, and an instruction execution interface set is obtained.

[0024] The remote operation and maintenance module includes a delay guarantee unit, a multi-point balancing unit, and a remote transmission unit; The delay guarantee unit includes time decomposition of the remote data transmission delay and PTP clock synchronization of the decomposed time period to obtain the effect of reducing the remote transmission error delay. The mathematical expression of time decomposition is: ; in, is the total delay, is the network propagation delay, It is the operation time of the PLC hardware control module. It is the response execution time of the instruction execution interface.

[0025] The multi-point balancing unit is used to perform multi-point active balancing of the power supply power, and the multi-point active balancing includes: limiting the dynamic adjustment range of the balancing current of the portable power station power supply to between 0.1A and 10A, using a bidirectional DC / DC converter to realize the energy transfer of the portable power station power, and adjusting the current according to the current power of the power supply and the current voltage difference measured by the sensor, replacing the step of adjusting the duty cycle in the power optimization unit with adjusting the current, and adjusting the current value to ensure that the power supply is in the optimal voltage range when the power supply is at the current voltage difference and the current power maximum value, thereby improving the overall performance and stability of the system; The converter has an energy transfer efficiency of ≥92%, and can effectively transfer excess energy from modules with higher battery voltage to modules with lower battery voltage, thereby achieving battery pack voltage balancing.

[0026] The remote transmission unit includes: Based on the IEEE 802.1Q protocol, the remote transmission network is divided into m virtual LANs, and the priority marking technology is used to control the priority of data traffic to ensure the transmission quality of key data; The remote power transmission channel is switched through dual-channel redundant transmission to ensure the continuity and reliability of data transmission. The automatic channel switching logic includes: When the total delay of the main channel is greater than the preset delay threshold or the bit error rate of the receiving instruction end of the currently used interface is greater than the preset bit error rate threshold, the buffered data queue currently queuing on the main channel is directly converted to the standby channel; When the total delay of the main channel is less than or equal to the preset delay threshold and the bit error rate of the instruction receiving end of the currently used interface is not greater than the preset bit error rate threshold, the optical fiber TCP / IP channel is maintained.

[0027] The pseudo code for automatic channel switching is as follows: if main channel delay>50ms || bit error rate>1e-4: Start the 4G backup channel; Perform seamless switching (data difference < 0.1%); else: Maintain fiber optic TCP / IP channels; This automatic switching logic ensures that when the communication quality does not meet the standards, the system can automatically switch to the backup channel to ensure high availability of data transmission.

[0028] The visualization module is used to display the power supply power, current transmission rate, current use interface and total charging energy of the portable power station on the user interface. The power station control data includes the power supply power, current transmission rate, current use interface and total charging energy of the portable power station.

[0029] The present invention can greatly improve the power efficiency of power generation, ensure communication delay, greatly extend the power generation life of the power supply, and make the power transmission process more stable.

[0030] It should be understood by those skilled in the art that the embodiments of the present invention may be provided as methods, systems or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware aspects. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program codes. Among them, the storage medium may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read Only Memory, referred to as EPROM), programmable read-only memory (Programmable Red-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk. These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A portable power station remote control system, characterized in that: Including power generation module, intelligent control module, remote operation and maintenance module and visualization module; The power generation module is used to collect and dynamically track the power generation energy, track and optimize the power supply power, and adjust the power index to obtain the optimal power station power output efficiency; The intelligent control module is used to perform data management, intelligent interface and task allocation management on the power data set using a data tiered storage strategy; The remote operation and maintenance module is used to further optimize the power supply power, maintain the balance of power transmission delay and energy, and perform lossless channel switching on the remote transmission channel; The visualization module is used to exchange power plant control data with users.

2. The portable power station remote control system according to claim 1, characterized in that: The power generation module includes a power supply intelligent tracking unit and a power optimization unit; The power intelligent tracking unit comprises: The sensors are used to collect the efficiency of photovoltaic modules, real-time irradiance, photovoltaic panel area, battery temperature and factory temperature coefficient of the power supply from the portable power station; The power tracking model is used to dynamically track the power supply in real time, and the real-time power supply power is recorded in the power supply power data set. The state function mathematical expression of the power tracking model is: ； in, is the power supply, is the photovoltaic module efficiency, is the real-time irradiance, is the photovoltaic panel area, is the factory temperature coefficient of the power supply, is the battery temperature, The standard temperature is 25 degrees Celsius; The power optimization unit comprises: The power supply working interface point is tracked by a power tracking model, and the duty cycle of the DC converter is adjusted in real time using an MPPT controller, and the duty cycle is adjusted to be at the top of the maximum power curve of the power supply working interface point.

3. The portable power station remote control system according to claim 2, characterized in that: The intelligent control module includes a central unit, an execution unit and an interface unit; The central unit comprises: Using a data tiered storage strategy to manage the power data set, to obtain a power sequence power database; The tiered storage strategy includes: When the power supply power data validity is less than 7 days, the power supply power is input into the hot data queue; When the power supply power data validity is greater than or equal to 7 days and less than or equal to 3 months, the power supply power is input into the warm data queue; When the data validity of the power source power is greater than 3 months, the power source power is input into the cold data queue; The data calling methods in the hot data queue, warm data queue and cold data queue all adopt a multi-level feedback queue scheduling algorithm, setting the hot data queue priority to the first priority, the warm data queue to the second priority, and the cold data queue to the third priority.

4. The portable power station remote control system according to claim 3, characterized in that: The execution unit comprises: Intelligent programming management of power station control interface is carried out through matlab and PLC hardware control module to build a programming control network, which includes task allocation for portable power station execution cycle using IEC 61131-3 standard programming; The allocation logic includes: When the execution period is less than the first period, the task is controlled by using the circuit breaker; When the execution cycle is greater than the first cycle and less than the second cycle, the power tracking model is parameterized, the parameters including the efficiency of the photovoltaic module of the power supply, the real-time irradiance, the photovoltaic panel area, the battery temperature and the factory temperature coefficient of the power supply, and the parameters are manually adjusted to obtain the power supply power change rate, which is obtained by the ratio of the absolute value of the difference between the power supply power after the adjustment of the parameters and the original power supply power to the original power supply power; When the execution cycle is greater than the second cycle, the current power supply power is output.

5. The portable power station remote control system according to claim 4, characterized in that: The time synchronization control of the circuit breaker includes: Preset n groups of operation sequences, set the opening time ≤20ms, the closing synchronization error ≤1ms, and use MOSFET drive circuit fast switching technology to control the discreteness of the action response time within 0.5ms.

6. The portable power station remote control system according to claim 5, characterized in that: The interface unit comprises: The interface of the portable power station is Huffman encoded to obtain a non-repetitive interface code, the non-repetitive interface code is linked to the PLC hardware control module, a single execution operation pre-coding is set, and an instruction execution interface set is obtained.

7. The portable power station remote control system according to claim 6, characterized in that: The remote operation and maintenance module includes a delay guarantee unit, a multi-point balancing unit and a remote transmission unit; The delay guarantee unit includes time decomposing the remote data transmission delay and performing PTP clock synchronization on the decomposed time period to obtain the effect of reducing the remote transmission error delay. The time decomposition mathematical expression is: ； in, is the total delay, is the network propagation delay, It is the operation time of the PLC hardware control module. It is the response execution time of the instruction execution interface.

8. The portable power station remote control system according to claim 7, characterized in that: The multi-point balancing unit is used to perform multi-point active balancing on the power supply power, and the multi-point active balancing includes: The dynamic adjustment range of the balanced current of the portable power station power supply is limited to between 0.1A and 10A, a bidirectional DC / DC converter is used to realize the energy transfer of the portable power station power, the current is adjusted according to the current power of the power supply and the current voltage difference measured by the sensor, the step of adjusting the duty cycle in the power optimization unit is replaced by adjusting the current, and the current value is adjusted to when the power supply is at the maximum value of the current voltage difference and the current power.

9. The portable power station remote control system according to claim 8, characterized in that: The remote transmission unit comprises: Based on IEEE 802.1Q protocol, the remote transmission network is divided into m virtual LANs, and priority marking technology is used to control the priority of data traffic; The channels of remote power transmission are switched through dual-channel redundant transmission. The automatic channel switching logic includes: When the total delay of the main channel is greater than the preset delay threshold or the bit error rate of the receiving instruction end of the currently used interface is greater than the preset bit error rate threshold, the buffered data queue currently queuing on the main channel is directly converted to the standby channel; When the total delay of the main channel is less than or equal to the preset delay threshold and the bit error rate of the instruction receiving end of the currently used interface is not greater than the preset bit error rate threshold, the optical fiber TCP / IP channel is maintained.

10. The portable power station remote control system according to claim 9, characterized in that: The visualization module is used to display the power supply power, current transmission rate, current usage interface and total charging energy of the portable power station on the user interface, and the power station control data includes the power supply power, current transmission rate, current usage interface and total charging energy of the portable power station.

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