Method for reducing the impact of photovoltaic power generation grid connection on distribution network

Abstract

The invention discloses a method for reducing the impact of photovoltaic power generation grid-connected on distribution network, which specifically includes step 1, collecting power quality data of distribution network after photovoltaic power generation grid-connected, and storing them in an HDFS storage system; step 2, using MapReduce Statize the power quality data in the HDFS storage system, calculate the photovoltaic power generation impact coefficient PPGC, and form a basic database; step 3, run the photovoltaic power generation impact coefficient based on MapReduce, and divide the impact of photovoltaic power generation grid connection on the distribution network into three levels; Step 4, according to the impact of photovoltaic power generation on the distribution network, different measures are used to eliminate the impact of photovoltaic power generation on the distribution network; the present invention provides a new method for analyzing the impact of photovoltaic power generation on the distribution network, and the analysis process is simple , can effectively balance the load distribution of the distribution network after photovoltaic power generation is connected to the grid, and reduce the impact of photovoltaic power generation on the distribution network.

Description

technical field [0001] The invention belongs to the technical field of power grid planning, and in particular relates to a method for reducing the impact of photovoltaic power grid connection on distribution networks. Background technique [0002] The power grid is a basic platform for carrying the new energy revolution. The future power grid will develop into a smart grid capable of transmitting and distributing large-scale new energy power. Solar photovoltaic power generation has the advantages of being safe, reliable, and not subject to geographical restrictions. The developed clean energy is expected to become one of the world's major energy sources in the 21st century; solar photovoltaic power generation equipment is not easy to damage, and is easy to install and maintain. At present, a large number of photovoltaic power generation is connected to the existing grid system, and the number is growing. [0003] Since solar energy is greatly affected by factors such as geog...

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Problems solved by technology

[0003] Since solar energy is greatly affected by factors such as geographical distribution, seasonal changes, and day and night alternation, the output load characteristics of photovoltaic power generation are unstable. When the photovoltaic power generation system is connected to the distribution network, especially from the load side, it often leads to The load distribution of the entire distribution network changes, which brings challenges to the safe and stable operation of the distribution network; in addition, due to the random change characteristics of photovoltaic power generation, the load distribution characteristics after grid connection will change, so that the system power flow also has certain Due to randomness, the traditional power flow algorithm is no longer applicable, so new methods are urgently needed to analyze the impact of photovoltaic power grid integration on the distribution network

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