Technology strategy assessment method for improving distributed photovoltaic admitting ability of power distribution network

Abstract

The invention discloses a technology strategy assessment method for improving distributed photovoltaic admitting ability of a power distribution network. The method comprises the steps that under thecondition that no technology strategy is implemented, photovoltaic generating capacity of 8,760 hours in a whole year as well as photovoltaic capacity permeability and energy permeability are calculated, and initial power distribution network maximum distributed photovoltaic admitting capacity (P<Cap><0>) is determined; and changes of the distributed photovoltaic admitting capacity of the power distribution network under the condition that different technology strategies k are implemented are determined. According to the technology strategy assessment method for improving the distributed photovoltaic admitting ability of the power distribution network, a permitted load rate lower limit is used as a constraint condition, the method of utilizing a load curve and the photovoltaic generating capacity of 8,760 hours to perform prefectural region photovoltaic admitting ability research is proposed, the photovoltaic admitting ability of the power distribution network is comprehensively measured through the capacity permeability, the energy permeability and other concepts, and the changes of the improved photovoltaic admitting ability of the power distribution network under different technology strategies are analyzed and acquired.

Description

technical field [0001] The invention relates to the field of power system analysis, in particular to a technical strategy evaluation method for improving the distributed photovoltaic capacity of distribution networks. Background technique [0002] Photovoltaic industry, as a strategic emerging industry representing the direction of global energy technology innovation and energy strategic transformation, is also an industry with international competitive advantages in my country. It is of great significance to my country's adjustment of energy structure, promotion of energy production and consumption revolution, and promotion of ecological civilization construction. At present, vigorously developing the photovoltaic industry has risen to the national energy strategy, and the country has issued a series of policies and measures to vigorously support the development of photovoltaic power generation. At the same time, the development of the Energy Internet has also brought major...

AI Technical Summary

Problems solved by technology

Due to the large installed capacity of concentrated contiguous development areas and the low user load density in rural areas, the penetration rate of photovoltaics in some areas is relatively high, which will have varying degrees of impact on power quality, voltage fluctuations, and relay protection.

[0004] After a large number of distributed photovoltaics are connected to the grid, due to their randomness, volatility, poor dispatchability, and different grid connection methods, they will have a greater impact on the planning and safe and stable operation of the grid.

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