Micro-grid control device of photovoltaic distributed power supply
A technology of distributed power supply and control device, applied in battery circuit devices, photovoltaic power generation, circuit devices, etc., can solve the problems of output power fluctuation, high cost, inability to provide backup energy, etc., to improve efficiency and meet the effect of smooth switching
Inactive Publication Date: 2014-07-02
QINGDAO CHUANGMING NEW ENERGY RESOURCES
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Problems solved by technology
[0002] With the power shortage and increasingly serious environmental pollution caused by energy shortages, clean energy such as solar energy and wind energy has been promoted and used in recent years, and its positive effects on environmental protection and energy conservation have also attracted increasing attention. Distributed power generation generally refers to the power generation (energy supply) method that arranges relatively small power generation devices near the load site or users. The characteristics of distributed power generation, such as flexible location, decentralization, cleanliness and environmental protection, and reproducibility, are very suitable for distributed power generation. Power demand and resource distribution have slowed down the huge investment required for the upgrading of transmission and distribution networks. At the same time, mutual backup with the large power grid has also improved the reliability of power supply. At present, although many solar and wind energy products are put into use , but due to the influence of its own structure and characteristics, it still has some shortcomings and technical defects, such as intermittent power supply leading to output power fluctuations, unschedulable operation of the power grid, failure to provide backup energy, high cost, etc., For this reason, people need a kind of new technical scheme to be able to produce, to solve the existing problem at present, the purpose of the present invention is exactly the new technical scheme proposed in order to solve the existing problem at present
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[0015] see figure 1
[0016] The housing 15 is provided with an energy storage device control module 9, a maximum power point tracking control module 10, a power measurement module 11, a parameter preset module 12, a PID operation 13, a PWM modulation module 14, and a circuit 16. The circuit 16 can communicate with external equipment The inside of the casing 15 is connected by a circuit 16.
[0017] Among them, the energy storage device module 9 can charge and discharge the battery pack, and quickly respond to the power demand of the load. The maximum power tracking control module 10 can collect the current and voltage output by the photovoltaic cell from the current and voltage sensor, and find out the photovoltaic cell output through continuous calculation and comparison. The maximum power point of the battery, the power measurement module 11 can use the load point voltage collected by the sensor and the output current of the inverter to calculate the active power and react...
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The invention discloses a micro-grid control device of a photovoltaic distributed power supply. The micro-grid control device is composed of an energy storage device control module, a maximum-power-point tracking control module, a power measuring module, a parameter preset module, a PID operation, a PWM modulation module, a circuit and a shell. The energy storage device control module, the maximum-power-point tracking control module, the power measuring module, the parameter preset module, the PID operation, the PWM modulation module and the circuit are arranged in the shell. By means of the micro-grid control device, energy bidirectional flow between a power grid and an energy storage device can be achieved, automatic and smooth switching between an island mode and a grid-connected work mode can be achieved, and therefore higher power supply quality can be guaranteed, and higher power supply efficiency is achieved.
Description
technical field [0001] The invention relates to a micro-grid control device, in particular to a device capable of realizing bidirectional energy flow between the power grid and an energy storage device, and automatic smooth switching between island and grid-connected operating modes, so as to ensure higher power supply quality and A micro-grid control device for a photovoltaic distributed power supply that improves greater power supply efficiency belongs to the application field of new energy technologies. technical background [0002] With the power shortage and increasingly serious environmental pollution caused by energy shortages, clean energy such as solar energy and wind energy has been promoted and used in recent years, and its positive effects on environmental protection and energy conservation have also attracted increasing attention. Distributed power generation generally refers to the power generation (energy supply) method that arranges relatively small power gen...
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Login to View More IPC IPC(8): H02J7/35H02J3/38H02J3/32
CPCY02E70/30Y02E10/58Y02E10/563Y02E10/566Y02E10/56Y02P80/14
Inventor王忠峰桑瑞芳
OwnerQINGDAO CHUANGMING NEW ENERGY RESOURCES