Energy storage type photovoltaic power generating system

A photovoltaic power generation system and battery energy storage system technology, applied in photovoltaic power generation, photovoltaic power stations, photovoltaic modules, etc., can solve problems such as day and night off-time stability, adverse effects of user power quality, and inability to respond to demand, so as to improve operating efficiency and reliability effect

CN104467628AInactive Publication Date: 2015-03-25HEFEI ZHENGMEI POWER SUPPLY TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-03-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an energy storage type photovoltaic power generating system. The energy storage type photovoltaic power generating system is composed a photovoltaic power generating system body, a battery energy storage system, a data collecting system and a control system. A storage battery energy storage unit serves as an energy buffering device of the photovoltaic power generating system body, and generating power output is effectively controlled. The power supply mode of the system is managed and set according to the system generating capacity and the power grid power demand, the running efficiency and reliability of the system are improved, and the positive role of a distributed energy source in a power grid is brought into full play.
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Description

technical field

[0001] The invention relates to a photovoltaic power generation system, in particular to an energy storage type photovoltaic power generation system. Background technique

[0002] Solar power generation, wind power generation, tidal power generation and other renewable energy power generation provide an alternative solution idea and method to solve the increasingly tense energy crisis and environmental pollution problems in human society. Taking solar photovoltaic power generation as an example, with the increasing installed capacity in the world in recent years, it is becoming an important technical means for the utilization of renewable energy.

[0003] Solar photovoltaic power generation can be simply divided into two ways, one is centralized solar photovoltaic power station, through the construction of large-scale solar photovoltaic power stations with a scale of tens of megawatts or even hundreds of megawatts in a concentrated and contiguous manner, sola...

Examples

Embodiment Construction

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Such as figure 1 As shown, the energy storage type photovoltaic power generation system of the present invention is composed of a photovoltaic power generation system, a battery energy storage system, a data acquisition system and a control system;

[0018] The photovoltaic power generation system is composed of two photovoltaic cells combined with a DC power converter; the two photovoltaic cells can freely form strings and / or parallel photovoltaic cell groups; the DC power converter is used to complete the intelligent charging of the storage battery and the maximum Power output control function;

[0019] The battery energy storage system is composed of a lead-acid battery and a charge-discharge controller; the lead-acid battery is used to provide backup capacity for the system to maintain a stable output of the system; the charge-discharge controller consists of...