Distributed photovoltaic intelligent miniature circuit breaker with demand side response capability

Abstract

The invention relates to the technical field of power system equipment, and discloses a distributed photovoltaic intelligent miniature circuit breaker with demand side response capability, which comprises a circuit breaker body, a main control board, an automatic opening and closing mechanism, an alternating current acquisition module, a communication module, a protection module and a power supply module, the main control board, the automatic opening and closing mechanism, the alternating current acquisition module, the communication module, the protection module and the power supply module are respectively connected through electric signals, and the circuit breaker body, the main control board, the automatic opening and closing mechanism, the alternating current acquisition module, the communication module, the protection module and the power supply module are integrated to form a system with complete functions and high intelligent degree. Electrical parameters such as voltage and current in a circuit can be collected in real time, intelligent analysis and judgment are carried out through the main control board, and according to an analysis result, the circuit breaker can automatically adjust the working state of the circuit breaker, such as automatic opening and closing, so that accurate control and optimized operation of the circuit are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power system equipment, and particularly relates to a distributed photovoltaic intelligent miniature circuit breaker with demand side response capability. BACKGROUND

[0002] With the wide application of distributed photovoltaic power generation system in distribution network, its randomicity, intermittence and poor controllability bring many challenges to power grid operation, such as overvoltage, harmonic overproof, island operation and the like.

[0003] The existing photovoltaic grid-connected switch is mostly non-intelligent, cannot realize information interaction with the power grid dispatching system, does not have remote regulation and control, power quality analysis and demand side response capability, and is difficult to adapt to the requirement of new power system on distributed power supply "observable, measurable and controllable".

[0004] Therefore, the present application provides a distributed photovoltaic intelligent miniature circuit breaker with demand side response capability. SUMMARY

[0005] The present application mainly solves the technical problems of the prior art, and provides a distributed photovoltaic intelligent miniature circuit breaker with demand side response capability.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme, a distributed photovoltaic intelligent miniature circuit breaker with demand side response capability, comprising a circuit breaker body, a main control board, an automatic opening and closing mechanism, an exchange and acquisition module, a communication module, a protection module and a power module, the main control board, the automatic opening and closing mechanism, the exchange and acquisition module, the communication module, the protection module and the power module are connected through electric signals respectively, the main control board supports data interaction between the intelligent fusion terminal of the transformer area and the photovoltaic inverter, the main control board comprises an intelligent control module, a data acquisition processor and an interface module, the intelligent control module is responsible for coordinating the work between the modules, intelligently analyzes and judges the electrical parameter information transmitted from the data acquisition processor and the external instructions received by the communication module, and then issues corresponding control instructions to realize accurate control and optimized operation of the circuit breaker, the data acquisition processor is dedicated to quickly and accurately processing the electrical parameters collected by the exchange and acquisition module, and provides reliable data support for the intelligent control module, the interface module provides rich interfaces, facilitates connection and data interaction with the intelligent fusion terminal of the transformer area and the photovoltaic inverter and the like, and realizes information sharing and collaborative work.

[0007] Preferably, the automatic opening and closing mechanism comprises a driving motor, a transmission assembly and an opening and closing execution component, the driving motor drives the opening and closing execution component to act through the transmission assembly after receiving the opening and closing instruction issued by the main control board, and realizes automatic opening and closing operation of the circuit breaker.

[0008] As preferred, the cross-collection module is used to collect the voltage, current and other electrical parameters in real time, and transmit the collected data to the data collection processor of the main control board for processing.

[0009] As preferred, the cross-collection module includes a voltage transformer, a current transformer and a signal conditioning circuit, the voltage transformer and the current transformer respectively convert high voltage and large current into low voltage and small current suitable for measurement, and the signal conditioning circuit further processes the converted signals, such as filtering, amplification, etc., to ensure that the collected electrical parameters are accurate and reliable.

[0010] As preferred, the communication module supports multiple communication protocols and can realize efficient and stable communication with external devices, upload the running state of the circuit breaker, collected data and other information to the monitoring platform, and receive control instructions issued by the monitoring platform.

[0011] As preferred, the communication module includes a wireless communication unit and a wired communication unit, the wireless communication unit uses wireless communication technologies such as Wi-Fi, Bluetooth and ZigBee to realize wireless data transmission of the circuit breaker, and the wired communication unit uses wired communication methods such as RS485 and Ethernet to ensure the stability and reliability of data transmission.

[0012] As preferred, the protection module has the functions of overcurrent protection, overvoltage protection and undervoltage protection, and can quickly act to cut off the circuit when abnormal conditions occur in the circuit, thereby protecting the safety of equipment and personnel.

[0013] As preferred, the protection module includes an overcurrent protection unit, an overvoltage protection unit and an undervoltage protection unit, the overcurrent protection unit monitors the current in the circuit in real time, and triggers a protection action immediately when the current exceeds the set threshold, and the overvoltage protection unit and the undervoltage protection unit monitor the voltage in the circuit, and quickly cut off the circuit when the voltage exceeds the normal range.

[0014] As preferred, the power module provides stable working power for the entire circuit breaker, ensuring that each module can operate normally.

[0015] As preferred, the power module includes a power conversion circuit and a power management circuit, the power conversion circuit converts the external input power into a stable voltage suitable for the operation of each module, and the power management circuit intelligently manages the distribution and use of power to improve the utilization efficiency of power and reduce energy consumption.

[0016] The application provides a distributed photovoltaic intelligent micro circuit breaker with demand side response capability, which has the following beneficial effects: 1. The distributed photovoltaic intelligent miniature circuit breaker with demand side response capability, by integrating the circuit breaker body, main control board, automatic opening and closing mechanism, exchange and acquisition module, communication module, protection module and power module, a complete and intelligent system is formed, which can real-time collect electrical parameters such as voltage and current in the circuit, and intelligently analyze and judge through the main control board, according to the analysis result, the circuit breaker can automatically adjust its working state, such as automatic opening and closing, to realize precise control and optimized operation of the circuit, meanwhile, it has strong communication capability, supports multiple communication protocols, can efficiently and stably interact with external devices, upload the running state of the circuit breaker and collected data to the monitoring platform, provides strong support for the dispatching and management of power system, in addition, it is equipped with perfect protection module, has overcurrent protection, overvoltage protection and undervoltage protection functions, can quickly act when abnormal conditions occur in the circuit, cut off the circuit, thereby ensuring the safety of equipment and personnel.

[0017] 2. The distributed photovoltaic intelligent miniature circuit breaker with demand side response capability, by setting the exchange and acquisition module, it can real-time and accurately collect key electrical parameters such as voltage and current in the circuit, these collected data not only provide rich and accurate information basis for subsequent intelligent analysis of the main control board, so that the circuit breaker can make more scientific and reasonable decisions based on actual circuit conditions, but also help to timely discover potential problems that may exist in the circuit, such as voltage fluctuation and current anomaly, providing strong guarantee for stable operation of the power system, meanwhile, the high-precision acquisition characteristics of the exchange and acquisition module further improve the reliability and accuracy of the entire circuit breaker system, making it better adapt to the complex and variable environment of the distributed photovoltaic power generation system.

[0018] 3. The distributed photovoltaic intelligent miniature circuit breaker with demand side response capability, by setting the communication module, it builds an efficient and stable communication bridge between the circuit breaker and external devices due to its ability to support multiple communication protocols, on one hand, it can accurately upload the running state of the circuit breaker, collected electrical data and other information to the monitoring platform in real time, so that the management personnel of the power system can master the actual working condition of the circuit breaker at any time and anywhere, providing comprehensive and timely data support for the dispatching and management of the power system, which helps to realize fine management and scientific decision-making of the power system, on the other hand, the communication module can also receive control instructions issued by the monitoring platform and quickly and accurately convey these instructions to the main control board, so that the main control board can timely adjust the working state of the circuit breaker according to the instructions, realize remote control function, this bidirectional data interaction capability greatly improves the flexibility and controllability of the power system, making the circuit breaker better adapt to the requirements of new power system on distributed power sources "observable, measurable and controllable".

[0019] 4、The distributed photovoltaic intelligent miniature circuit breaker with demand side response capability, by setting the protection module, the protection module builds a solid safety line for the entire power system with its comprehensive protection function, when overcurrent, overvoltage or undervoltage and other abnormal conditions occur in the circuit, the protection module can quickly perceive and immediately trigger the protection action, accurately cut off the circuit, effectively prevent the equipment from being damaged due to electrical failure, and avoid safety accidents such as electric shock caused by personnel, greatly improve the safety and reliability of the power system, and moreover, the various protection units in the protection module have clear division of labor and work cooperatively, the overcurrent protection unit monitors the current change in the circuit in real time, and once the current exceeds the safety threshold, it will cut off the circuit without hesitation, and the overvoltage protection unit and the undervoltage protection unit monitor the circuit voltage at all times to ensure that the voltage is always within the normal range, providing all-round protection for the stable operation of the power system.

[0020] 5、The distributed photovoltaic intelligent miniature circuit breaker with demand side response capability, by setting the power module, the power module provides stable and reliable working power for the entire circuit breaker with its efficient power conversion and intelligent management function, the power conversion circuit can accurately convert the external input power into stable voltage suitable for the work of each module, ensuring that each module can work efficiently under normal working voltage, avoiding performance degradation or failure problems caused by unstable voltage, and the power management circuit intelligently controls the distribution and use of power, it can reasonably distribute power resources according to the actual work demand of each module, and prioritize the power supply demand of key modules, while meeting the work demand of each module, it tries to reduce energy consumption and improve the utilization efficiency of power, this intelligent management method not only prolongs the service life of the power supply, but also reduces the operating cost of the entire circuit breaker, so that the circuit breaker can maintain stable and reliable performance during long-term operation, providing a strong guarantee for the safe and stable operation of the power system. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The device module diagram of the present application. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and those skilled in the art can also obtain other implementation drawings according to the provided drawings without creating any creative labor.

[0023] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "inner," "outer," and "side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1: A distributed photovoltaic smart microcircuit breaker with demand-side response capability, such as... Figure 1As shown, the circuit breaker includes a circuit breaker body, a main control board, an automatic opening and closing mechanism, a data acquisition module, a communication module, a protection module, and a power supply module. These components are connected via electrical signals. The main control board supports data interaction with the smart integrated terminal of the distribution area and photovoltaic inverters. The main control board includes an intelligent control module, a data acquisition processor, and an interface module. The intelligent control module coordinates the work between the various modules, performing intelligent analysis and judgment based on electrical parameter information transmitted from the data acquisition processor and external commands received from the communication module. It then issues corresponding control commands to achieve precise control and optimized operation of the circuit breaker. The data acquisition processor focuses on quickly and accurately processing the electrical parameters acquired by the data acquisition module, providing reliable data support for the intelligent control module. The interface module provides rich interfaces to facilitate connection and data interaction with the smart integrated terminal of the distribution area and photovoltaic inverters, enabling information sharing and collaborative work. By integrating the circuit breaker body, main control board, automatic opening and closing mechanism, data acquisition module, communication module, protection module, and power supply module, a fully functional and highly intelligent system is formed. It can collect electrical parameters in the circuit in real time, such as voltage and current, and perform intelligent analysis and judgment through the main control board. Based on the analysis results, the circuit breaker can automatically adjust its working state, such as automatic opening and closing, to achieve precise control and optimized operation of the circuit. It also has strong communication capabilities, supports multiple communication protocols, and can conduct efficient and stable data interaction with external devices. It can upload information such as the circuit breaker's operating status and collected data to the monitoring platform, providing strong support for power system dispatching and management. In addition, it is equipped with a complete protection module with overcurrent protection, overvoltage protection, and undervoltage protection functions. It can quickly act to cut off the circuit when abnormal conditions occur in the circuit, thereby ensuring the safety of equipment and personnel.

[0029] Example 2: Based on Example 1, as follows Figure 1 As shown, the automatic opening and closing mechanism includes a drive motor, a transmission assembly, and an opening and closing execution component. After receiving the opening and closing command from the main control board, the drive motor drives the opening and closing execution component through the transmission assembly to realize the automatic opening and closing operation of the circuit breaker. By setting up an acquisition module, the acquisition module can collect key electrical parameters such as voltage and current in the circuit in real time and accurately. This collected data not only provides a rich and accurate information foundation for subsequent intelligent analysis by the main control board, enabling the circuit breaker to make more scientific and reasonable decisions based on the actual circuit conditions, but also helps to promptly detect potential problems in the circuit, such as voltage fluctuations and current anomalies, providing a strong guarantee for the stable operation of the power system. At the same time, the high-precision acquisition characteristics of the acquisition module further improve the reliability and accuracy of the entire circuit breaker system, enabling it to better adapt to the complex and variable environment of distributed photovoltaic power generation systems.

[0030] Example 3: Based on Examples 1 and 2, as follows... Figure 1 As shown, the cross-data acquisition module is used to collect electrical parameters such as voltage and current in the circuit in real time, and transmits the collected data to the data acquisition processor on the main control board for processing. The cross-data acquisition module includes a voltage transformer, a current transformer, and a signal conditioning circuit. The voltage transformer and the current transformer convert high voltage and large current into low voltage and small current suitable for measurement, respectively. The signal conditioning circuit further processes the converted signal, such as filtering and amplification, to ensure that the collected electrical parameters are accurate and reliable. By incorporating a communication module, which supports multiple communication protocols, an efficient and stable communication bridge is built between the circuit breaker and external devices. On one hand, it can accurately upload the circuit breaker's operating status and various collected electrical data to the monitoring platform in real time, allowing power system managers to monitor the actual operation of the circuit breaker anytime, anywhere. This provides comprehensive and timely data support for power system dispatching and management, contributing to refined management and scientific decision-making. On the other hand, the communication module can also receive control commands from the monitoring platform and quickly and accurately transmit these commands to the main control board, enabling the main control board to adjust the circuit breaker's operating status in a timely manner based on the commands, achieving remote control functionality. This two-way data interaction capability greatly improves the flexibility and controllability of the power system, allowing the circuit breaker to better adapt to the requirements of new power systems for "observable, measurable, and controllable" distributed power sources.

[0031] Example 4: Based on Examples 1, 2, and 3, as follows... Figure 1As shown, the communication module supports multiple communication protocols, enabling efficient and stable communication with external devices. It uploads information such as the circuit breaker's operating status and collected data to the monitoring platform, while simultaneously receiving control commands from the monitoring platform. The communication module includes a wireless communication unit and a wired communication unit. The wireless communication unit uses wireless communication technologies such as Wi-Fi, Bluetooth, and ZigBee to achieve wireless data transmission from the circuit breaker. The wired communication unit uses wired communication methods such as RS485 and Ethernet to ensure the stability and reliability of data transmission. By incorporating a protection module, which provides comprehensive protection, a robust safety barrier is built for the entire power system. When abnormal conditions such as overcurrent, overvoltage, or undervoltage occur in the circuit, the protection module can quickly detect them and immediately trigger protective actions, accurately cutting off the circuit and effectively preventing equipment damage due to electrical faults. It also avoids potential safety accidents such as electric shock, greatly improving the safety and reliability of the power system. Moreover, the various protection units in the protection module have clear division of labor and work together. The overcurrent protection unit closely monitors the current changes in the circuit in real time, and will cut off the circuit without hesitation once the current exceeds the safety threshold. The overvoltage protection unit and the undervoltage protection unit constantly monitor the circuit voltage to ensure that the voltage is always within the normal range, providing comprehensive protection for the stable operation of the power system.

[0032] Example 5: Based on Examples 1, 2, 3, and 4, as follows... Figure 1As shown, the protection module has multiple protection functions such as overcurrent protection, overvoltage protection, and undervoltage protection. When an abnormal situation occurs in the circuit, it can quickly act to cut off the circuit and ensure the safety of equipment and personnel. The protection module includes an overcurrent protection unit, an overvoltage protection unit, and an undervoltage protection unit. The overcurrent protection unit monitors the current in the circuit in real time. When the current exceeds the set threshold, it immediately triggers the protection action. The overvoltage protection unit and the undervoltage protection unit monitor the voltage in the circuit. When the voltage exceeds the normal range, they will also quickly cut off the circuit. The power supply module provides a stable operating power supply for the entire circuit breaker, ensuring that each module can operate normally. The power supply module includes a power conversion circuit and a power management circuit. The power conversion circuit converts the externally input power into a stable voltage suitable for the operation of each module. The power management circuit intelligently manages the distribution and use of power to improve power utilization efficiency and reduce energy consumption. By incorporating a power supply module, which provides a stable and reliable operating power supply for the entire circuit breaker through its efficient power conversion and intelligent management functions, the power conversion circuit accurately converts the externally input power into a stable voltage suitable for the operation of each module. This ensures that each module can operate efficiently under normal operating voltage, avoiding performance degradation or malfunctions caused by voltage instability. The power management circuit intelligently regulates the distribution and use of power. It can rationally allocate power resources according to the actual working needs of each module, prioritizing the power supply needs of critical modules. At the same time, while meeting the working needs of each module, it minimizes energy consumption and improves power utilization efficiency. This intelligent management method not only extends the service life of the power supply but also reduces the operating cost of the entire circuit breaker, enabling it to maintain stable and reliable performance during long-term operation and providing strong protection for the safe and stable operation of the power system.

[0033] The working principle of this invention is as follows: Under normal operating conditions, the data acquisition module continuously collects electrical parameters such as voltage and current in the circuit. These parameters, after being processed by the signal conditioning circuit, are accurately transmitted to the data acquisition processor on the main control board. The data acquisition processor quickly analyzes the received electrical parameters and provides the processed data to the intelligent control module. As the core control unit, the intelligent control module, on the one hand, monitors the circuit's operating status in real time based on the electrical parameter information transmitted from the data acquisition processor; on the other hand, it receives external commands from the intelligent integrated terminal of the distribution area or the photovoltaic inverter through the communication module. Based on preset control strategies and algorithms, the intelligent control module intelligently analyzes and judges the collected information, and then issues corresponding control commands. When a circuit breaker opening / closing operation is required, the intelligent control module sends the opening / closing command to the drive motor of the automatic opening / closing mechanism. After receiving the command, the drive motor drives the opening / closing actuator through the transmission components, realizing the automatic opening / closing of the circuit breaker, thereby precisely controlling the circuit's on / off state. Regarding circuit protection, each protection unit of the protection module monitors the current and voltage in the circuit in real time. The overcurrent protection unit continuously monitors the current magnitude. Once the current exceeds the set threshold, it immediately triggers protection action, quickly cutting off the circuit to prevent equipment damage due to overcurrent. The overvoltage and undervoltage protection units monitor the voltage; when the voltage exceeds the normal range, they also quickly cut off the circuit to ensure the safety of equipment and personnel. The communication module plays a crucial role in information exchange throughout the entire operation. It supports multiple communication protocols, enabling efficient and stable communication with external devices through wireless communication units (such as Wi-Fi, Bluetooth, ZigBee, etc.) and wired communication units (such as RS485, Ethernet, etc.). The communication module uploads the circuit breaker's operating status and collected data to the monitoring platform, allowing managers to understand the circuit breaker's operation in real time. Simultaneously, it receives control commands from the monitoring platform and transmits them to the intelligent control module for remote control and adjustment of the circuit breaker. The power supply module provides a stable operating power supply for the entire circuit breaker. The power conversion circuit converts the externally input power into a stable voltage suitable for the operation of each module, ensuring the normal operation of each module. The power management circuit intelligently manages the distribution and use of power. Based on the working requirements of each module, it rationally allocates power, improves power utilization efficiency, and reduces energy consumption, thereby ensuring that the circuit breaker can work stably and reliably under various operating conditions.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A distributed photovoltaic intelligent microcircuit breaker with demand-side response capability, characterized in that, It includes a circuit breaker body, a main control board, an automatic opening and closing mechanism, a data acquisition module, a communication module, a protection module, and a power supply module. The main control board, automatic opening and closing mechanism, data acquisition module, communication module, protection module, and power supply module are connected by electrical signals. The main control board includes an intelligent control module, a data acquisition processor, and an interface module.

2. The distributed photovoltaic smart miniature circuit breaker with demand-side response capability according to claim 1, characterized in that: The automatic opening and closing mechanism includes a drive motor, a transmission assembly, and an opening and closing execution component.

3. The distributed photovoltaic smart miniature circuit breaker with demand-side response capability according to claim 1, characterized in that: The cross-data acquisition module includes a voltage transformer, a current transformer, and a signal conditioning circuit.

4. The distributed photovoltaic smart miniature circuit breaker with demand-side response capability according to claim 1, characterized in that: The communication module includes a wireless communication unit and a wired communication unit.

5. The distributed photovoltaic intelligent miniature circuit breaker with demand-side response capability according to claim 1, characterized in that: The protection module includes an overcurrent protection unit, an overvoltage protection unit, and an undervoltage protection unit.

6. The distributed photovoltaic intelligent miniature circuit breaker with demand-side response capability according to claim 1, characterized in that: The power module includes a power conversion circuit and a power management circuit.

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