A method of on-site power consumption with participation of photovoltaic power generation
A photovoltaic power generation and power technology, applied in sustainable buildings, climate sustainability, renewable energy integration, etc., can solve the problems of two-way power flow, high cost, unfavorable photovoltaic utilization rate and maximization of economic benefits, etc., to achieve Improving power supply capacity, or avoiding transformation investment, is conducive to the effect of development
Active Publication Date: 2018-06-19
SOUTHEAST UNIV
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[0003] At present, the domestic research on the utilization of photovoltaic power generation is mainly in the aspect of photoelectric conversion efficiency. The main technology includes converting photoelectricity into other forms of energy storage and using controllable loads to participate in regulation. However, this method is likely to cause two-way power flow in the power supply and distribution system. And the cost is high, which is not conducive to improving the utilization rate of photovoltaics and maximizing economic benefits
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[0026] Below in conjunction with accompanying drawing, the present invention will be further described.
[0027] Such as Figure 1-6 Shown, the inventive method comprises the following steps:
[0028] Step 1: First investigate the installation capacity, historical output and grid-connected power of household photovoltaic power generation, determine the household photovoltaic power generation according to the historical power consumption of regional users, and set up the objective function of photovoltaic power consumption and grid demand:
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[0030]
[0031]
[0032] The T is the number of optimization periods in the research cycle, T=48, that is, the load control period interval is every 30min / time, and a total of 48 tests are carried out; P PV (t) is the distributed photovoltaic output power in the t period; P L (t) represents the total power of all loads in the period t; (P PV (t)-P L (t)) + Indicates the difference between the photovoltaic output power...
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The invention discloses a photovoltaic power generation participant power local consumption method. The method includes the following steps that: household photovoltaic power generation power source installed capacity, historical output condition and grid-connected electric quantity are surveyed, household photovoltaic power generation quantity is determined according to historical electricity consumption conditions of regional users, and an objective function is formulated; based on historical data, current photoelectric power source output and electricity consumption conditions of the users are predicted, the electricity consumption characteristics and demand response characteristics of user-side controllable loads are analyzed according to predicted data, life habits of the users and the like; parameters such as energy storing device capacity and input / output power are designed according to the objective function and transferrable load electricity consumption characteristics; and finally, an energy storing device charge and discharge time-table can be formulated. With the local consumption method of the invention adopted, power quality of a power grid can be improved, economic benefits can be maximized, and the development of clean energy can be benefitted.
Description
technical field [0001] The invention relates to the field of new energy photoelectric grid connection, and in particular to the technology of on-site power consumption in which photovoltaic power generation participates. Background technique [0002] With the gradual depletion of fossil energy and the intensification of environmental pollution, many countries have intensified the development of renewable energy power generation in recent years, especially solar power generation, in order to alleviate energy and environmental problems. Solar energy has the characteristics of "low energy density, intermittent, and spatial distribution changes at any time", so its power generation output has the characteristics of intermittent and poor controllability. The big challenge has led to the widespread occurrence of the phenomenon of "light abandonment". The National Energy Administration pointed out that the proportion of domestic photovoltaic power stations being "abandoned light a...
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IPC IPC(8): H02J3/46
CPCH02J3/46Y02B10/10
Inventor 汤奕伏祥运刘明王华雷杜先波王琦谭敏刚居佳琪
Owner SOUTHEAST UNIV