CN-122000968-A - Optical storage and charging integrated intelligent micro-grid system and control method thereof

CN122000968ACN 122000968 ACN122000968 ACN 122000968ACN-122000968-A

Abstract

The invention provides an optical storage and filling integrated intelligent micro-grid system and a control method thereof; the intelligent micro-grid system integrating the photovoltaic power storage and the charging comprises a photovoltaic power generation unit, an energy storage unit, a charging unit, a load unit and a control unit, wherein the photovoltaic power generation unit is used for converting solar energy into electric energy, the energy storage unit is electrically connected with the photovoltaic power generation unit and used for storing the electric energy and releasing the electric energy under preset conditions, the charging unit is used for providing charging service for an electric automobile, the load unit comprises various electric equipment, the control unit is respectively in communication connection with the photovoltaic power generation unit, the energy storage unit, the charging unit and the load unit and is used for monitoring operation state data of the units and cooperatively controlling energy flow among a public power grid, the photovoltaic power generation unit, the energy storage unit, the charging unit and the load unit according to a preset micro-grid operation control strategy, and the intelligent scheduling method is used for realizing efficient on-site consumption of photovoltaic power generation, intelligent scheduling of charging load of the electric automobile and combined optimization of system overall operation economy and safety under typical scenes such as an industrial park.

Inventors

XIAO YUQI
HU CHENGYOU
YAN BANGPING
ZHANG GENGWU
LIU ZHIYUAN
GONG SHUNMING

Assignees

中国建筑第八工程局有限公司

Dates

Publication Date: 20260508
Application Date: 20260107

Claims (10)

1. An optical storage and inflation integrated intelligent micro-grid system, which is characterized by comprising: the photovoltaic power generation unit is used for converting solar energy into electric energy; the energy storage unit is electrically connected with the photovoltaic power generation unit and is used for storing electric energy and releasing the electric energy under preset conditions; the charging unit is used for providing charging service for the electric automobile; The load unit comprises a plurality of electric equipment; The control unit is respectively in communication connection with the photovoltaic power generation unit, the energy storage unit, the charging unit and the load unit, and is used for monitoring the running state data of each unit and coordinately controlling the energy flow among the public power grid, the photovoltaic power generation unit, the energy storage unit, the charging unit and the load unit according to a preset micro-grid running control strategy.
2. The integrated optical storage and charging intelligent microgrid system according to claim 1, wherein the photovoltaic power generation units comprise solar panels in distributed arrangement, and the solar panels are paved on the roof of a building and/or the roof of a charging facility shed.
3. The integrated optical storage and charging intelligent micro-grid system according to claim 2, wherein the solar panel is a monocrystalline silicon photovoltaic module.
4. The integrated optical storage and charging intelligent micro-grid system according to claim 1, wherein the energy storage unit comprises an energy storage battery and a bidirectional energy storage converter, and the bidirectional energy storage converter is used for realizing charge and discharge control and AC/DC conversion of the energy storage battery.
5. The integrated optical storage and charging intelligent micro-grid system according to claim 4, wherein the energy storage battery is a lead-acid battery.
6. The integrated optical storage and charging intelligent micro-grid system according to claim 1, wherein the electric equipment in the load unit comprises office equipment, environment adjusting equipment and security equipment.
7. A control method of an optical storage and inflation integrated intelligent micro-grid system according to any one of claims 1 to 6, comprising the steps of: The data acquisition and monitoring comprises the steps of acquiring the operation power data of the photovoltaic power generation unit, the energy storage unit, the charging unit and the load unit in real time; performing a micro-grid operation control strategy based on the operation power data, and dynamically adjusting the charge and discharge states of the energy storage unit and the charge power of the charging unit to optimize the system power balance; The economic dispatch comprises the steps of controlling the energy storage unit to charge in the electricity price valley period and discharge in the electricity price peak period based on time-sharing electricity price information; And safety protection, namely executing corresponding protection instructions when abnormal system operation is monitored.
8. The method for controlling an optical storage and inflation integrated intelligent micro-grid system according to claim 7, wherein in the power coordination and optimization control step, the micro-grid operation control strategy comprises the following decision logic: the power balance decision is used for generating a first charge-discharge instruction for the energy storage unit according to the real-time difference between the photovoltaic power generation power and the total load demand; The economic dispatching decision is used for generating a second charge-discharge dispatching plan for the energy storage unit according to the time-of-use electricity price information; and the multi-target coordination logic is used for arbitrating the first charge and discharge instruction and the second charge and discharge scheduling plan according to a preset priority rule and outputting a final control instruction to the energy storage unit and the charging unit.
9. The method of claim 7, wherein in the economical dispatching step, the economical dispatching has higher control priority when the charge and discharge operation of the energy storage unit conflicts with the power balance optimization in the power coordination and optimization control step.
10. The method of claim 7, wherein in the step of protecting, the system operation abnormality includes overload, overheat or three-phase imbalance, and the protection command includes stopping operation or limiting power.

Description

Optical storage and charging integrated intelligent micro-grid system and control method thereof Technical Field The invention belongs to the technical field of micro-grids, and particularly relates to an optical storage and charging integrated intelligent micro-grid system and a control method thereof. Background The distributed photovoltaic power generation is widely applied due to high flexibility and various access modes. However, photovoltaic power generation is obviously influenced by factors such as weather, the output has intermittence and instability, and if the photovoltaic power generation is directly connected with the grid, impact and disturbance are easily caused to the power grid. Meanwhile, as the electricity demand of places such as industrial parks, commercial parks and the like continues to increase, it is highly demanded to construct an efficient and reliable energy supply system so as to ensure the energy demand thereof and reduce the burden of a public power grid. Further, with the deep transformation of energy structures and the rapid popularization of electric automobiles, the problems of high-proportion access and effective digestion of distributed renewable energy are increasingly outstanding. When the traditional power grid system and the simple optical storage and charging system are overlapped with the charging load of the random electric automobile in the face of fluctuating photovoltaic power generation, the real-time balance of supply and demand is difficult to realize, and the fluctuation of the power grid is easy to cause. The existing system mostly adopts a relatively simple grid-connected or off-grid operation mode, and lacks of cooperative optimization and intelligent control on power generation, energy storage, charging and conventional loads, so that the utilization efficiency of the whole energy is low, the operation economy is insufficient, and the safe and stable operation level of the system needs to be improved. Therefore, how to realize efficient on-site absorption of photovoltaic power generation, intelligent scheduling of charging load of an electric automobile and joint optimization of overall operation economy and safety of a system in typical scenes such as an industrial park and the like becomes a key technical problem to be solved currently. Disclosure of Invention Aiming at the defects existing in the prior art, the invention provides an optical storage and charging integrated intelligent micro-grid system and a control method thereof, which are used for realizing high-efficiency on-site absorption of photovoltaic power generation, intelligent scheduling of charging load of an electric automobile and joint optimization of overall operation economy and safety of the system under typical scenes such as an industrial park and the like. The technical scheme of the invention is that the optical storage and filling integrated intelligent micro-grid system comprises: the photovoltaic power generation unit is used for converting solar energy into electric energy; the energy storage unit is electrically connected with the photovoltaic power generation unit and is used for storing electric energy and releasing the electric energy under preset conditions; the charging unit is used for providing charging service for the electric automobile; The load unit comprises a plurality of electric equipment; The control unit is respectively in communication connection with the photovoltaic power generation unit, the energy storage unit, the charging unit and the load unit, and is used for monitoring the running state data of each unit and coordinately controlling the energy flow among the public power grid, the photovoltaic power generation unit, the energy storage unit, the charging unit and the load unit according to a preset micro-grid running control strategy. Further, the photovoltaic power generation unit comprises a distributed arrangement of solar panels laid on top of a building roof and/or a charging facility shed. Further, the solar panel is a monocrystalline silicon photovoltaic module. Further, the energy storage unit comprises an energy storage battery and a bidirectional energy storage converter, and the bidirectional energy storage converter is used for realizing charge and discharge control and alternating current-direct current conversion of the energy storage battery. Further, the energy storage battery is a lead-acid battery. Further, the electric equipment in the load unit comprises office equipment, environment adjusting equipment and security equipment. The control method of the optical storage and inflation integrated intelligent micro-grid system, which is any one of the above, comprises the following steps: The data acquisition and monitoring comprises the steps of acquiring the operation power data of the photovoltaic power generation unit, the energy storage unit, the charging unit and the load unit in real time; performing a micro-grid operation co