All-vanadium liquid flow energy storage control system and method

Abstract

The invention relates to a control system and method for all-vanadium liquid flow energy storage, and belongs to the technical field of all-vanadium liquid flow energy storage. Comprising a central control module, a display interface module, a data acquisition and calibration module, a power conversion regulation and control module, an electrolyte flow control module, a battery charging and discharging management module, an energy scheduling and monitoring module and a safety protection monitoring module. The all-vanadium redox flow energy storage control system comprises a central control module, a display module, a power conversion regulation and control module, an electrolyte flow control module, a battery charging and discharging management module, a safety protection monitoring module, a data acquisition and calibration module and an energy scheduling and monitoring module. The modules jointly form a core control system of the all-vanadium liquid flow energy storage system, quick response can be achieved, and efficient, stable and safe operation of the system is ensured.

Description

Technical Field

[0001] The present invention relates to a control system and method for all-vanadium redox flow energy storage, belonging to the technical field of all-vanadium redox flow energy storage. Background Art

[0002] The rapid development of new energy construction has brought great impacts on the safe and stable operation of the power system, power balance, etc. At the same time, with the gradual increase in the proportion of electricity consumption in the tertiary industry, the peak-valley difference of the load has become larger. In order to maintain the stable operation of the power system and energy conservation and environmental protection on the user side, energy storage systems have gradually risen to a fundamental and crucial position in the power system. With the rapid development of renewable energy and the construction of smart grids, all-vanadium redox flow energy storage, as a renewable energy storage technology, has attracted much attention. Renewable energies such as wind energy and solar energy have the characteristics of intermittency and uncontrollability, which lead to problems such as grid instability and imbalance between energy supply and demand. The emergence of all-vanadium redox flow energy storage technology provides solutions to these problems. In the triple-goal structure of low carbon, safety, and economy, all-vanadium redox flow energy storage systems have gradually become one of the main technical bases for promoting and maintaining the balance of these three aspects.

[0003] Currently, the control systems and methods for all-vanadium redox flow energy storage used can basically meet the normal usage requirements. However, the fineness of the core control system of all-vanadium redox flow energy storage systems is still relatively poor, the coverage is not wide enough, and it cannot achieve rapid response, making it difficult to ensure the efficient, stable, and safe operation of the system more precisely. Based on this, the present invention provides a control system and method for all-vanadium redox flow energy storage. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the fineness of the core control system is still relatively poor, the coverage is not wide enough, and it cannot achieve rapid response, making it difficult to ensure the efficient, stable, and safe operation of the system more precisely.

[0005] In view of this, the present invention provides a control system and method for all-vanadium redox flow energy storage. The proposed technical solution includes a central control module, a display interface module, a data acquisition and calibration module, a power conversion and regulation module, an electrolyte flow control module, a battery charge and discharge management module, an energy scheduling and monitoring module, and a safety protection and monitoring module. The central control module is electrically connected to the display interface module, the data acquisition and calibration module, the power conversion and regulation module, the electrolyte flow control module, the battery charge and discharge management module, the energy scheduling and monitoring module, and the safety protection and monitoring module;

[0006] Central control module: responsible for the operation management and scheduling of the overall system, and is the center for information data exchange and control of the system;

[0007] Display Interface Module: Used for displaying and operating various alarms, parameter settings, historical parameter settings, and alarm queries;

[0008] Data Acquisition and Calibration Module: Collects and summarizes various data of the all-vanadium redox flow energy storage system through various sensors connected to the battery compartment. After data collection, key data is calibrated, smoothed, and filtered to ensure the accuracy and reliability of the data;

[0009] Power Conversion and Regulation Module: Responsible for converting the chemical energy stored in the electrolyte into electrical energy and delivering the alternating current to the power grid and the client through an inverter power supply;

[0010] Electrolyte Flow Control Module: Precisely controls the flow rate of the electrolyte by adjusting the liquid flow rate and installing a flow meter to reduce energy loss and ensure the efficient and stable operation of the battery;

[0011] Battery Charge and Discharge Management Module: Responsible for monitoring and controlling the charge and discharge process of the battery to ensure the safe and efficient operation of the battery;

[0012] Energy Scheduling and Monitoring Module: Responsible for formulating and implementing corresponding energy scheduling strategies according to the power grid demand and the energy storage system status, and has a visualization monitoring function to enable operation and maintenance personnel to grasp the operation status and energy scheduling situation of the system in real time;

[0013] Safety Protection and Monitoring Module: Responsible for monitoring the operation status of the system, and promptly detecting and handling potential faults and safety hazards.

[0014] Furthermore, the central control module uses a high-performance CPU to collect and monitor the data variables of the control information points where the working conditions of the modules running in the energy storage system change. By receiving and analyzing data from other modules, corresponding control strategies are formulated and implemented to ensure the high efficiency and stability of the overall system operation.

[0015] Furthermore, the power conversion and regulation module adopts high-precision power conversion technology, has multiple current-limiting control technologies, and allows functions such as output power phase control, voltage drift compensation, and low harmonic distortion to achieve smooth conversion and efficient utilization of electrical energy.

[0016] Furthermore, the energy scheduling and monitoring module dynamically adjusts the charge and discharge power and duration of the energy storage system by real-time monitoring the load changes of the power grid and the energy storage status of the energy storage system to achieve peak shaving and valley filling and stable operation of the power grid.

[0017] Furthermore, the battery charge and discharge management module uses an intelligent allocation strategy to control the charging and discharging of the battery pack to optimize the battery performance. The battery charge and discharge management module monitors the operating status of the battery in real time to ensure the safe operation of the battery.

[0018] Furthermore, the sensors include a voltage sensor, a current sensor, a pressure sensor, a flow sensor, a temperature sensor, and a humidity sensor.

[0019] Furthermore, the safety protection and monitoring module monitors various parameters of the system in real time by installing various sensors. After detecting an abnormal situation, the safety protection and monitoring module activates corresponding shutdown and alarm protection measures to ensure the safe operation of the system.

[0020] According to the above-described control method for all-vanadium redox flow energy storage, it includes the following steps:

[0021] S1: The central control module using a high-performance CPU is responsible for the operation management and scheduling of the overall system and is the center for information data exchange and control;

[0022] S2: The display interface module is used to display and operate various alarms, parameter settings, historical parameter settings, and alarm queries;

[0023] S3: The data acquisition and calibration module aggregates various data of the all-vanadium redox flow energy storage system. After the acquisition is completed, key data is calibrated, smoothed, and filtered;

[0024] S4: The power conversion and regulation module using high-precision power conversion technology converts the chemical energy stored in the electrolyte into electrical energy and delivers the alternating current to the power grid and the client through an inverter power supply;

[0025] S5: The electrolyte flow control module precisely controls the flow rate of the electrolyte;

[0026] S6: The battery charge and discharge management module using an intelligent allocation strategy is responsible for monitoring and controlling the charging and discharging process of the battery;

[0027] S7: The energy scheduling and monitoring module is responsible for formulating and implementing corresponding energy scheduling strategies according to the needs of the power grid and the state of the energy storage system and has a visual monitoring function;

[0028] S8: Through the safety protection and monitoring module, various sensors are installed to monitor various parameters of the system in real time, responsible for monitoring the operating status of the system, and timely discovering and handling potential faults and safety hazards.

[0029] Advantages of the present invention:

[0030] The control system and method for all-vanadium redox flow energy storage involve multiple aspects, including a central control module, a display module, a power conversion and regulation module, an electrolyte flow control module, a battery charge and discharge management module, a safety protection and monitoring module, a data acquisition and calibration module, and an energy scheduling and monitoring module. These modules together constitute the core control system of the all-vanadium redox flow energy storage system, enabling rapid response and ensuring the efficient, stable, and safe operation of the system. Description of the Drawings

[0031] Figure 1 It is a schematic diagram of a control system and method for all-vanadium redox flow energy storage according to the present invention. Detailed Embodiments

[0032] The preferred embodiments of the present invention will be described in detail below.

[0033] The present invention provides a control system for all-vanadium redox flow energy storage, including a central control module, a display interface module, a data acquisition and calibration module, a power conversion and regulation module, an electrolyte flow control module, a battery charge and discharge management module, an energy scheduling and monitoring module, and a safety protection and monitoring module. The central control module is electrically connected to the display interface module, the data acquisition and calibration module, the power conversion and regulation module, the electrolyte flow control module, the battery charge and discharge management module, the energy scheduling and monitoring module, and the safety protection and monitoring module;

[0034] Central control module: The central control module is the "brain" of the all-vanadium redox flow energy storage system. The central control module uses a high-performance CPU to collect and monitor the data variables of the control information points where the working conditions of the modules running in the energy storage system change. By receiving and analyzing data from other modules, it formulates and executes corresponding control strategies to ensure the high efficiency and stability of the overall system operation. It is responsible for the operation management and scheduling of the overall system and is the center for information data exchange and control in the system;

[0035] Display interface module: It is used to display and operate various alarms, parameter settings, historical parameter settings, and alarm queries;

[0036] Data acquisition and calibration module: It collects and aggregates various data of the all-vanadium redox flow energy storage system through various sensors connected to the battery compartment. The sensors include voltage sensors, current sensors, pressure sensors, flow sensors, temperature sensors, humidity sensors, etc. After the collection is completed, key data is calibrated, smoothed, and filtered to ensure the accuracy and reliability of the data;

[0037] Power Conversion and Regulation Module: The power conversion and regulation module adopts high-precision power conversion technology and has multiple current-limiting control technologies. It allows functions such as output power phase control, voltage drift compensation, and low harmonic distortion to achieve stable conversion and efficient utilization of electrical energy. It is responsible for converting the chemical energy stored in the electrolyte into electrical energy and delivering the alternating current to the power grid and the client through an inverter power supply;

[0038] Electrolyte Flow Control Module: The electrolyte is a key component of the all-vanadium redox flow battery energy storage system. Its flow rate plays a crucial role in the operating stability and service life of the battery. By adjusting the liquid flow velocity and installing a flow meter, the flow rate of the electrolyte is precisely controlled. This can not only ensure the efficient and stable operation of the battery but also extend the service life of the battery. At the same time, reasonable electrolyte flow control can also reduce energy losses and improve the overall efficiency of the system;

[0039] Battery Charge and Discharge Management Module: The battery charge and discharge management module uses an intelligent allocation strategy to control the charge and discharge of the battery pack to optimize battery performance. The battery charge and discharge management module monitors the operating status of the battery in real time, including parameters such as voltage, current, and temperature, to ensure the safe operation of the battery. It is responsible for monitoring and controlling the charge and discharge process of the battery to ensure that the battery operates under safe and efficient conditions;

[0040] Energy Scheduling and Monitoring Module: It is one of the core functions of the all-vanadium redox flow energy storage system. By real-time monitoring of the load changes of the power grid and the energy storage status of the energy storage system, the charge and discharge power and duration of the energy storage system are dynamically adjusted to achieve peak shaving and valley filling and stable operation of the power grid. It is responsible for formulating and implementing corresponding energy scheduling strategies according to the needs of the power grid and the status of the energy storage system and has a visualization monitoring function so that the operation and maintenance personnel can grasp the operating status and energy scheduling situation of the system in real time;

[0041] Safety Protection and Monitoring Module: The safety protection and monitoring module real-time monitors various parameters of the system through various installed sensors. After detecting abnormal situations, the safety protection and monitoring module activates corresponding shutdown and alarm protection measures to ensure the safe operation of the system. It is responsible for monitoring the operating status of the system, promptly discovering and handling potential faults and safety hazards.

[0042] According to the above control method for all-vanadium redox flow energy storage, it includes the following steps:

[0043] S1: The central control module with a high-performance CPU is responsible for the operation management and scheduling of the overall system and is the center for information data exchange and control;

[0044] S2: The display interface module is used to display and operate various alarms, parameter settings, historical parameter settings, and alarm queries;

[0045] S3: The data of the all-vanadium liquid flow energy storage system are collected through the data acquisition and calibration module. After the collection is completed, the key data are calibrated, smoothed and filtered;

[0046] S4: The chemical energy stored in the electrolyte is converted into electrical energy through the power conversion and control module using high-precision power conversion technology, and the AC power is transmitted to the power grid and the client through the inverter power supply;

[0047] S5: Accurately control the flow rate of the electrolyte through the electrolyte flow control module;

[0048] S6: The battery charge and discharge management module adopts an intelligent allocation strategy to monitor and control the battery charge and discharge process;

[0049] S7: The energy dispatching and monitoring module is responsible for formulating and executing corresponding energy dispatching strategies according to the needs of the power grid and the status of the energy storage system, and has a visual monitoring function;

[0050] S8: Through the security protection monitoring module, various sensors are installed to monitor the various parameters of the system in real time. It is responsible for monitoring the operating status of the system, and promptly discovering and handling potential faults and safety hazards.

[0051] In summary, the control system and method of all-vanadium liquid flow energy storage involve multiple aspects, including central control module, display module, power conversion and regulation module, electrolyte flow control module, battery charge and discharge management module, safety protection monitoring module, data acquisition and calibration module, energy scheduling and monitoring module. These modules together constitute the core control system of the all-vanadium liquid flow energy storage system, which can achieve rapid response and ensure the efficient, stable and safe operation of the system.

[0052] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A control system for all-vanadium redox flow energy storage, characterized in that: It includes a central control module, a display interface module, a data acquisition and calibration module, a power conversion and regulation module, an electrolyte flow control module, a battery charge and discharge management module, an energy scheduling and monitoring module, and a safety protection and monitoring module. The central control module is electrically connected to the display interface module, the data acquisition and calibration module, the power conversion and regulation module, the electrolyte flow control module, the battery charge and discharge management module, the energy scheduling and monitoring module, and the safety protection and monitoring module. Central control module: Responsible for the operation management and scheduling of the overall system, and is the center for information data exchange and control of the system. Display interface module: Used to display and operate various alarms, parameter settings, historical parameter settings, and alarm queries. Data acquisition and calibration module: Collects and summarizes various data of the all-vanadium redox flow energy storage system through various sensors connected to the battery compartment. After the collection is completed, key data is calibrated, smoothed, and filtered to ensure the accuracy and reliability of the data. Power conversion and regulation module: Responsible for converting the chemical energy stored in the electrolyte into electrical energy and delivering the alternating current to the power grid and the client through an inverter power supply. Electrolyte flow control module: Precisely controls the flow rate of the electrolyte by adjusting the liquid flow rate and installing a flow meter to reduce energy loss and ensure the efficient and stable operation of the battery. Battery charge and discharge management module: Responsible for monitoring and controlling the charge and discharge process of the battery to ensure the safe and efficient operation of the battery. Energy scheduling and monitoring module: Responsible for formulating and implementing corresponding energy scheduling strategies according to the grid demand and the energy storage state of the energy storage system, and has a visualization monitoring function so that the operation and maintenance personnel can grasp the operation state and energy scheduling situation of the system in real time. Safety protection and monitoring module: Responsible for monitoring the operation state of the system, and timely discovering and handling potential faults and safety hazards.

2. The control system of an all-vanadium redox flow energy storage according to claim 1, characterized in that: The central control module uses a high-performance CPU to collect and monitor the data variables of the control information points where the working conditions of the modules running in the energy storage system change. By receiving and analyzing the data from other modules, corresponding control strategies are formulated and implemented to ensure the high efficiency and stability of the overall operation of the system.

3. The control system for all-vanadium redox flow energy storage according to claim 1, wherein: The power conversion and regulation module uses high-precision power conversion technology, has multiple current limiting control technologies, and allows functions such as output power phase control, voltage drift compensation, and low harmonic distortion to achieve smooth conversion and efficient utilization of electrical energy.

4. The control system for a all-vanadium redox flow energy storage according to claim 1, characterized in that: The energy scheduling and monitoring module dynamically adjusts the charge and discharge power and duration of the energy storage system by real-time monitoring of the load changes of the power grid and the energy storage state of the energy storage system to achieve peak shaving and valley filling and stable operation of the power grid.

5. The control system of an all-vanadium redox flow energy storage according to claim 1, characterized in that: The battery charge and discharge management module uses an intelligent distribution strategy to control the charge and discharge of the battery pack to optimize the battery performance. The battery charge and discharge management module real-time monitors the operation state of the battery to ensure the safe operation of the battery.

6. The control system for all-vanadium redox flow energy storage according to claim 1, characterized in that: The sensors include voltage sensors, current sensors, pressure sensors, flow sensors, temperature sensors, and humidity sensors.

7. The control system for all-vanadium redox flow energy storage according to claim 1, characterized in that: The safety protection and monitoring module monitors various parameters of the system in real time by installing various sensors. After detecting abnormal conditions, the safety protection and monitoring module activates corresponding shutdown and alarm protection measures to ensure the safe operation of the system.

8. The control method for all-vanadium redox flow energy storage according to any one of claims 1-7, characterized in that: It includes the following steps: S1: The central control module with a high-performance CPU is responsible for the operation management and scheduling of the overall system and is the center for information data exchange and control; S2: The display interface module is used to display and operate various alarms, parameter settings, historical parameter settings, and alarm queries; S3: The data acquisition and calibration module aggregates various data of the all-vanadium redox flow energy storage system, and calibrates, smooths, and filters key data after the acquisition is completed; S4: The power conversion and regulation module using high-precision power conversion technology converts the chemical energy stored in the electrolyte into electrical energy, and delivers the alternating current to the power grid and the client through an inverter power supply; S5: The electrolyte flow control module precisely controls the flow rate of the electrolyte; S6: The battery charge and discharge management module using an intelligent allocation strategy is responsible for monitoring and controlling the charge and discharge process of the battery; S7: The energy scheduling and monitoring module is responsible for formulating and implementing corresponding energy scheduling strategies according to the needs of the power grid and the state of the energy storage system, and has a visualization monitoring function; S8: Through the safety protection and monitoring module, various sensors are installed to monitor various parameters of the system in real time, responsible for monitoring the operating state of the system, and timely discovering and handling potential faults and safety hazards.

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