Virtual power plant system based on fused salt energy storage and operation method thereof

Abstract

The invention discloses a virtual power plant system based on fused salt energy storage and an operation method thereof.The system comprises an electric heating module, a fused salt energy storage module, a heat exchange module and a newly-built turboset, the electric heating module is connected with the fused salt energy storage module, the fused salt energy storage module is connected with the heat exchange module, and the heat exchange module is connected with the newly-built turboset; the newly-built turboset is connected with an existing power grid; the electric heating module also supplies external power; the fused salt energy storage module is also connected with the existing thermal power generating unit through a fused salt pipeline; the fused salt energy storage module comprises a plurality of low-temperature fused salt storage tanks, a high-temperature fused salt storage tank, a plurality of low-temperature fused salt pumps and a high-temperature fused salt pump, the low-temperature fused salt pumps are connected with the low-temperature fused salt storage tanks and the electric heating module, and the high-temperature fused salt pump is connected with the heat exchange module and the high-temperature fused salt storage tank; the system is not provided with an additional fuel system, has the attribute of a virtual power plant, can reduce the impact of distributed power supply and new energy grid connection on a power grid, and improves the stability and reliability of the power grid. And a large amount of photovoltaic and wind power abandoned light and wind power can be received.

Description

Technical field [0001] The present invention belongs to the field of energy storage technology, specifically relates to a virtual power plant system based on molten salt energy storage and its operating method. Background [0002] Power plants can continue to generate electricity every day, and the demand for electricity is always fluctuating, generally in the daytime electricity demand is more, at night less electricity needs, power plants in order to meet the demand for electricity can only adjust their own power generation according to external needs, resulting in the power generation side can not continue to run under high load, resulting in uneconomical operation. Therefore, there is an irreconcilable contradiction between power generation and electricity consumption. With the gradual increase in new energy installed capacity such as wind energy and photovoltaics in recent years, as well as distributed power generations and other access to the power grid, it has brought ser...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem of low system integration in the prior art and provide a virtual power plant system based on molten salt energy storage

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