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Independent fused salt heat storage power plant

A molten salt and power station technology, applied in the field of energy storage, can solve problems such as grid capacity waste, achieve the effects of small footprint, space-time decoupling, and no geographical conditions.

Inactive Publication Date: 2014-06-18
中投亿星新能源投资有限公司
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  • Application Information

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Problems solved by technology

In addition, in order to meet the requirements of power load, the current installed capacity of power generation and grid capacity are built according to the maximum demand. As the peak-to-valley difference of the power grid increases day by day, it will inevitably lead to the shutdown or low-load operation of generator sets during off-peak power consumption, and Waste of grid capacity

Method used

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  • Independent fused salt heat storage power plant

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Embodiment 1

[0022] Such as figure 1 As shown, an independent heat storage power station using molten salt as the heat storage medium, including a power supply for providing electric energy, a molten salt heating system, a molten salt heat storage system, a molten salt heat exchange system, a power generation island and an urban heating system, The specific structure is as follows:

[0023] The power source can be a wind power station, a photovoltaic power station, a smart grid energy storage station or other power stations with unstable power, or urban low-peak electricity. The thermal storage power station uses mixed molten salt as the thermal storage medium. The mixed molten salt has many advantages such as large heat capacity, good thermal stability, low viscosity, low vapor pressure, wide liquid temperature range, and low cost. The excess electric energy or unstable electric energy generated by different forms of power stations is converted into high-temperature heat energy and store...

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Abstract

An independent fused salt heat storage power plant belongs to the technical field of energy storage, and comprises a power supply, an electric fused salt heater, a high-temperature hot salt tank, a low-temperature cold salt tank, a fused salt pump, a fused salt circuit system, a brine heat exchanger, a conventional power generation island, a water-steam circuit system and an intelligent control system. When unstable or redundant electric energy such as photovoltaic power, wind power and off-peak power is stored, the electric energy is converted into high-temperature heat energy to be stored in the high-temperature fused salt through heating the high-temperature fused salt by the electric fused salt heater. When electricity utilization is needed, high-temperature heat energy stored in the high-temperature fused salt can heat water to generate water steam to drive a steam turbine to generate power to realize the energy release. In addition, a large-scale high-temperature thermal storage power plant built in cities can also be combined with city heat supply to construct a large-scale high-temperature heat storage and combined heat and power supply station.

Description

technical field [0001] The invention relates to an independent heat storage power station system, in particular to an independent heat storage power station system using mixed molten salt as a heat storage working fluid, and belongs to the technical field of energy storage. Background technique [0002] According to my country's "12th Five-Year Plan for Renewable Energy Development", by 2020, the installed capacity of wind power and solar energy will reach 200 million kW and 50 million kW respectively. However, the inherent intermittency and volatility of renewable energy such as wind energy and solar energy have a great impact on the power grid, resulting in a high proportion of wind power and photovoltaic power generation not connected to the grid in my country, and severe wind / solar abandonment. For example: in 2011, the unconnected rate of wind power in my country reached 28%; the unconnected rate of photovoltaic power reached 29%; The average rate of wind abandonment is...

Claims

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Application Information

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IPC IPC(8): F28D20/02
CPCY02E60/145Y02E60/14
Inventor 马重芳吴玉庭任楠刘斌
Owner 中投亿星新能源投资有限公司
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