一种用于微网光伏及储能系统的防逆流装置
The automatic control of meters, data acquisition and computing units, and control units solves the problem that manual operation in microgrid photovoltaic and energy storage systems is difficult to cope with load changes, and achieves the effects of real-time anti-backflow and extended equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU LUOKAI NEW ENERGY TECH CO LTD
- Filing Date
- 2025-08-19
- Publication Date
- 2026-07-17
AI Technical Summary
In existing microgrid photovoltaic and energy storage systems, manual operation is difficult to respond to load changes in real time, leading to reverse flow risks and increasing operating costs, and cannot meet the needs of multi-device collaborative control.
An anti-reverse current device, consisting of an electricity meter, a data acquisition and computing unit, a control unit, and a switch, automatically controls the power generation connection of photovoltaic and energy storage systems. Anti-reverse current is achieved by setting values a and b, reducing manual intervention.
It achieves real-time and accurate backflow prevention control, reduces operating costs, extends equipment life, and adapts to multi-device collaborative control.
Smart Images
Figure CN224520670U_ABST
Abstract
Claims
1. A reverse current prevention device for a microgrid photovoltaic and energy storage system, characterized in that, include: Electricity meter (1) is used to collect power consumption data in real time; The data acquisition and calculation unit (2) is connected to the electricity meter (1) and is used to receive and analyze the power consumption data. When the power consumption is less than the set value a, it sends a disconnect command; when the power consumption is greater than the set value b, it sends a close command. The control unit (3) is connected to the acquisition and calculation unit (2) and is used to receive disconnection and closure commands; Switch (4) is connected to control unit (3) and is used to control the power generation access of "photovoltaic / energy storage" according to the instructions of control unit (3); Among them, the set value b>a, and the difference between the two is greater than the power generation of "photovoltaic / energy storage".
2. A reverse current prevention device for a microgrid photovoltaic and energy storage system according to claim 1, characterized in that, The switch (4) is a contactor or a relay.
3. A reverse current prevention device for a microgrid photovoltaic and energy storage system according to claim 1, wherein, The data acquisition and calculation unit (2) includes a data receiving module and a data analysis module. The data receiving module is used to receive the power consumption data transmitted by the electricity meter (1), and the data analysis module is used to analyze the power consumption data and compare it with the set values a and b.
4. A reverse current prevention device for a microgrid photovoltaic and energy storage system according to claim 1, wherein, The control unit (3) includes an instruction receiving module and an execution module. The instruction receiving module is used to receive instructions sent by the acquisition and calculation unit (2), and the execution module is used to control the opening and closing of the switch (4) according to the instructions.
5. A reverse current prevention device for a microgrid photovoltaic and energy storage system according to claim 1, wherein, It also includes a display unit, which is connected to the data acquisition and calculation unit (2) to display the enterprise's power consumption, set value a, set value b and the working status of the switch (4) in real time.
6. A backflow prevention device for a microgrid photovoltaic and energy storage system, characterized in that, include: Electricity meter (1) is used to collect power consumption data in real time; The data acquisition and calculation unit (2) is connected to the electricity meter (1) and is used to receive and analyze the power consumption data. When the power consumption is less than the set value A, it generates an instruction to reduce the power generation. The communication unit (5) is connected to the data acquisition and computing unit (2) and is used to send the instruction to reduce the power generation to "photovoltaic / energy storage" so as to realize the communication connection between the data acquisition and computing unit (2) and "photovoltaic / energy storage".
7. A reverse current prevention device for a microgrid photovoltaic and energy storage system according to claim 6, wherein, The communication unit (5) adopts wireless communication or wired communication.
8. A reverse current prevention device for a microgrid photovoltaic and energy storage system according to claim 6, wherein, The acquisition and calculation unit (2) includes a data acquisition module and a power regulation and analysis module. The data acquisition module is used to receive the power consumption data transmitted by the electricity meter (1), and the power regulation and analysis module is used to analyze the power consumption data and compare it with the set value A to generate an instruction to reduce the power generation.
9. A reverse current prevention device for a microgrid photovoltaic and energy storage system according to claim 6, wherein, The communication unit (5) is connected to the inverter of the "photovoltaic / energy storage" and reduces the power generation of the "photovoltaic / energy storage" by controlling the inverter.
10. A reverse current prevention device for a microgrid photovoltaic and energy storage system according to claim 6, wherein, It also includes an alarm unit connected to the data acquisition and calculation unit (2). When the power consumption is continuously less than the set value A for a preset time, the alarm unit sends an alarm signal.