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Distribution-type household photovoltaic and ice storage optimizing coordinated control system and method

A household photovoltaic and coordinated control technology, which is applied in the field of distributed household photovoltaic energy storage, can solve the problem of battery uncertainty due to photovoltaics, and achieve the effect of efficient ice production

Inactive Publication Date: 2018-05-22
STATE GRID HUBEI ELECTRIC POWER COMPANY +3
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Problems solved by technology

Combining the power generation characteristics of photovoltaics with the working characteristics of ice storage air-conditioning systems solves the problem of batteries caused by photovoltaic uncertainties

Method used

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  • Distribution-type household photovoltaic and ice storage optimizing coordinated control system and method
  • Distribution-type household photovoltaic and ice storage optimizing coordinated control system and method
  • Distribution-type household photovoltaic and ice storage optimizing coordinated control system and method

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Embodiment Construction

[0051] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0052] like figure 1 As shown, first the photovoltaic solar panel receives sunlight and converts the light energy into electrical energy, then changes the voltage level of the system output electrical energy through the DC / DC converter, and then converts the DC power into AC power frequency through the DC / AC converter to provide to the air conditioning system . The dual-working condition unit is running, and the brine (ethylene glycol) flows through the dual-working condition unit to cool down, and then transported to the ice storage device to cool the water in the ice storage tank, usually to about -3°C, and at the same time, the ethylene glycol Alcohol is output from the other side of the ice storage tank, and returns to the main engine through the refrigeration pump, so that the low-temperature ethylene glycol cir...

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Abstract

The invention relates to a distribution-type household photovoltaic and ice storage optimizing coordinated control system and method. A photovoltaic and ice storage air-conditioning system stores solar energy in the mode of ice in the daytime, photovoltaic collecting of multiple low-energy densities is achieved, and cooling capacity is released at night. According to the characteristics of big data and historical data, the current ice storage quantity and the working mode of the system are determined through judgment of the control system, and the refrigeration requirements of users at night are met. Through the operation mode of the photovoltaic and ice storage air-conditioning system, the problem that at present, grid electricity supply is difficult due to the large air conditioning loadproportion is solved, and meanwhile the photovoltaic use ratio is increased; the ice is stored in the electricity using low ebb period of the daytime when residents go out, the cooling capacity is released in the electricity using peak at night, thus peak load shifting is achieved, the electricity using peak-ebb difference is decreased, the electricity using load on the grid side tends to be stable, and the generating efficiency of a generating unit is improved; and in addition, the solar energy in the daytime is stored and used at night, and the problem of photovoltaic inverse peak shiftingis solved.

Description

technical field [0001] The invention relates to a distributed household photovoltaic energy storage technology, in particular to a technology for efficient consumption of household photovoltaics and efficient integration with ice-storage air-conditioning systems, specifically an optimization of distributed household photovoltaics + ice storage Coordinated control systems and methods. Background technique [0002] At present, traditional fossil energy reserves are gradually decreasing, and people's demand for energy is increasing. In response to sustainable development, energy, environmental protection and other policies, coupled with the introduction of policies to encourage the use of new energy, household photovoltaics have developed rapidly, especially For example, in rural areas and areas with weak power grids, the use of photovoltaic power generation can solve problems such as electricity difficulties. However, due to the characteristics that photovoltaics only generat...

Claims

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Application Information

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IPC IPC(8): F24F5/00F24F11/63F24F11/70F24F130/20F24F140/60
CPCF24F5/0017F24F5/0046F24F2005/0067Y02E60/14
Inventor 李大虎王海鸣方华亮孙建波罗宾刘行波徐文渊邱思齐刘三鑫陶元
Owner STATE GRID HUBEI ELECTRIC POWER COMPANY
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