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Photovoltaic-energy storing joint power generation system

A technology of combined power generation and photovoltaic storage, which is applied in photovoltaic power generation, electrical components, energy storage, etc., can solve problems such as uncontrollable and unstable output power of photovoltaic power generation, so as to ensure the balance of power supply and consumption, improve the reliability of power supply, and smooth The effect of output power

Pending Publication Date: 2017-11-07
ZHEJIANG NARADA POWER SOURCE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, the present invention proposes a photovoltaic-storage combined power generation system, which mainly solves the problem of unstable and uncontrollable output power of photovoltaic power generation

Method used

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Examples

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Embodiment 1

[0038] In the solar-storage combined power generation system provided in Embodiment 1, by installing a photovoltaic device and using renewable energy solar power to generate electricity, the energy storage device can smooth the power output of the photovoltaic to store excess power generated by the photovoltaic device and improve the reliability of power supply. At the same time, the solar-storage combined power generation system provided by the present invention can cooperate with the power grid to generate electricity during the peak period of power consumption, transmit electric energy with the same frequency and phase as the power grid to the power grid, and store the electric energy of the power grid in the energy storage device during the valley period of power consumption , to achieve the purpose of smoothing photovoltaic output power, peak shaving and valley filling. The energy storage device can also track the electricity load, ensure that the electricity consumption i...

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Abstract

The invention discloses a photovoltaic-energy storing joint power generation system, which comprises a photovoltaic device and an energy storing device, wherein the photovoltaic device is connected with the power grid for converting solar energy to AC with the same frequency and the same phase as the power grid and the AC is transmitted to the power grid; the energy storing device is connected with the power grid and has a charging mode and a discharging mode; when the energy storing device is in the charging mode, the energy storing device acquires the AC from the power grid, the AC of the power grid is converted to DC and the DC is stored; when the energy storing device is in the discharging mode, the energy storing device converts the self-stored DC to the AC with the same frequency and the same phase as the power grid, and the AC is transmitted to the power grid; and the energy storing device is also connected with the photovoltaic device for monitoring working states of the photovoltaic device and the power grid, and the self working mode is switched according to the monitoring result. The photovoltaic-energy storing joint power generation system and the power grid are matched for power generation in the peak period of electricity consumption, purposes of achieving smooth photovoltaic output power and peeling peak and filling valley can be realized, and stable operation of the power grid and balance of power supply and power use are ensured.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic storage combined power generation system. Background technique [0002] It is an urgent need for the sustainable and healthy development of human society to seek new energy sources and realize clean, pollution-free and renewable power generation. As a kind of renewable energy, solar energy has the advantages of abundant resources, convenient development, clean and pollution-free. As the main application form of solar power generation, photovoltaic power generation has become an important power generation technology. [0003] At present, the output power of photovoltaic power generation is unstable and unpredictable. After the photovoltaic power generation system is connected to the grid, it will affect the power quality and safe and stable operation of the power system. In addition, as user load continues to increase, and load fluctuations w...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/32
CPCH02J3/383H02J3/32Y02E70/30Y02E10/56
Inventor 吴贤章王大为谭建国杨倩
Owner ZHEJIANG NARADA POWER SOURCE CO LTD
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