Distributed photovoltaic green energy system with energy storage function, and operation method thereof
A distributed photovoltaic and functional technology, applied in the field of solar power, can solve problems such as disturbances in the normal operation of the power grid, unevenness and randomness of solar radiation, and the inability of distributed photovoltaic power plants to provide all-weather green energy power supply, etc., to achieve stability The effect of improving performance and peak shaving and valley filling, increasing power generation, and improving the convenience of operation and maintenance
Pending Publication Date: 2021-12-21
青海黄河上游水电开发有限责任公司西宁太阳能电力分公司 +2
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[0003] However, due to the characteristics of unbalanced, random, fluctuating, intermittent, and daytime power generation of solar radiation, ordinary distributed photovoltaic power plants cannot provide all-weather, relatively stable green energy power supply, and access to After the power grid, it will disturb the normal operation of the power grid, seriously affecting the popularization and application of distributed photovoltaic power plants
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[0023] In the present invention, the terms "arranged", "provided", and "connected" should be interpreted broadly. For example, it may be a fixed connection, a detachable connection, or an integral structure; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary; internal connectivity. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.
[0024] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unl...
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The invention discloses a distributed photovoltaic green energy system with an energy storage function. The system comprises a photovoltaic module array, intelligent optimizers, an intelligent inverter, an energy storage unit and a power distribution unit for supplying power to a load, and each photovoltaic module of the photovoltaic module array is connected with one intelligent optimizer; the intelligent inverter is connected with all the intelligent optimizers, the energy storage unit, a power grid and the power distribution unit, and is used for outputting the electric energy of the photovoltaic module array; and the energy storage unit is used for charging by using the electric energy transmitted by the direct current output end of the intelligent inverter and supplying power to the power distribution unit when needed. According to the invention, the generation capacity of the distributed photovoltaic system is improved, the operation and maintenance convenience is improved, the residual electric energy consumed by the user load can be stored for night use during power generation in the daytime, or the electric energy in the power consumption valley period can be stored for use during the power consumption peak period or the power grid power failure period, so the problem that a distributed photovoltaic power generation system can only generate power in the daytime and cannot provide green energy at night is solved, and the function of peak shaving and valley filling is achieved.
Description
technical field [0001] The invention relates to the technical field of solar power, in particular to a distributed photovoltaic green energy system with an energy storage function and an operating method thereof. Background technique [0002] With the solemn announcement of the climate goal of "China will reach its carbon peak by 2030 and achieve carbon neutrality by 2060" in September 2020, building a green, low-carbon, clean, efficient and safe energy system has become a major goal of my country's energy development. direction. Especially since the emphasis on "building a new power system with new energy as the main body and accelerating the promotion of carbon emission rights trading", vigorously developing clean energy and building a distributed green energy system will become the main theme of my country's future power system construction. [0003] However, due to the characteristics of unbalanced, random, fluctuating, intermittent, and daytime power generation of solar...
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Login to View More IPC IPC(8): H02J3/46H02J3/32
CPCH02J3/466H02J3/32H02J2300/26Y02E10/56Y02E70/30
Inventor 杨振英郭永刚左燕刘陇刚王锐孔林婷常骥超
Owner 青海黄河上游水电开发有限责任公司西宁太阳能电力分公司