Roof solar grid-connected power station with energy storage battery system

A technology of energy storage battery and solar energy, applied in grid connection of solar power station. It can solve the problems of low income, inability to choose operation mode, and increase of vacant roof area.

Inactive Publication Date: 2019-03-19
JIANGYIN XINCHANGHONG POWER TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Different operating modes cannot be selected according to the actual situation of the user, which limits the installation of solar power plants, increases the vacant roof area, and reduces the proportion of self-generated and self-consumed power.

Method used

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  • Roof solar grid-connected power station with energy storage battery system
  • Roof solar grid-connected power station with energy storage battery system
  • Roof solar grid-connected power station with energy storage battery system

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Embodiment Construction

[0038] See Figure 1 to Figure 3 , The present invention relates to a rooftop solar power station with an energy storage battery system, including an energy storage and inverter system 1. The energy storage and inverter system 1 is composed of 1 to M groups of photovoltaic arrays 1.1 in parallel, and each photovoltaic array 1.1 All are connected to the photovoltaic grid-connected switch 1.3 through the grid-connected inverter 1.2, and switch K is provided before the grid-connected inverter 1.2. 12 ~K m2 , And the photovoltaic grid-connected switch 1.3 is connected in parallel with the battery inverter grid-connected switch 1.8, the battery inverter grid-connected switch 1.8 is equipped with an energy storage battery 1.6 (equipped with a battery management system 1.11), a charging current sampling transformer 1.9, The battery grid-connected inverter 1.7, the charger 1.10 and the mains control switch of the mains charging circuit are connected, and the energy storage battery 1.6 p...

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PUM

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Abstract

The invention relates to a roof solar power station with an energy storage battery system. The solar energy can be fully installed and used according to the available area (without considering the limitation of transformer capacity*0.7 to 0.8) of the roof of the user, different operation modes can be selected according to the actual conditions (such as the transformer capacity, self power consumption, photovoltaic installed capacity and weather forecast) of the user, the solar power station is installed according to the self roof area without considering the transformer capacity to the greatest extent, the roof vacancy area is reduced, and the self-generation self-use ratio is added; and besides, the ratio of self-use peak power of the system is improved so as to obtain maximum benefits. In a condition when the average power of the user is lower than the rated power of the transformer, all-weather operation in the case when the actual load is larger than the rated power of the transformer is met.

Description

Technical field [0001] The invention relates to a rooftop solar grid-connected power station with an energy storage battery system, which is used in the grid-connected solar power station. Background technique [0002] Under normal circumstances, the rooftop solar power will generate electricity as soon as the sun comes out in the morning, and the electricity will stop when the sun goes down. Generally, users choose the mode of spontaneous self-use and balance online. The vast majority of users use peak-to-valley billing. At the same time, the installed capacity of rooftop solar energy is limited by various conditions, such as transformer capacity, self-owned roof area, and rooftop solar revenue. It is closely related. The higher the peak power ratio and the higher the self-use ratio, the higher the income. [0003] Different operating modes cannot be selected according to the actual situation of users, which restricts the installation of solar power stations, increases the vacant...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/32
CPCH02J3/32H02J3/383Y02A30/00Y02B10/10Y02E10/56Y02E70/30
Inventor 张文宝徐巍王莉
Owner JIANGYIN XINCHANGHONG POWER TECH
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