Dynamic reactive power optimization method for distribution network with large-scale photovoltaic access

Abstract

The invention relates to a power distribution network dynamic reactive power optimization method for large-scale photovoltaic access. The power distribution network dynamic reactive power optimization method for large-scale photovoltaic access is characterized in fully utilizing photovoltaic reactive control and feed line automatic voltage regulators to minimize the network loss and the adjusting number of tap joints, and specifically comprises the steps: determining a multi-target mathematic model Mu taking the network loss and the adjusting number of tap joints as the targets, and respectively determining a function which takes the network loss and the adjusting number of tap joints as the targets; determining a photovoltaic reactive control strategy; determining a load demand curve; and utilizing an improved particle swarm algorithm to perform optimized solution, and eventually obtaining the photovoltaic reactive output of each period, the shift setting of the tap joints and the voltage situation of each photovoltaic access point when the satisfaction is maximized. The power distribution network dynamic reactive power optimization method for large-scale photovoltaic access has the advantages of being scientific and reasonable, being high in applicability and being nice in effect, and is conductive to safe and economical operation of equipment accessing the distribution network.

Description

technical field [0001] The invention relates to a dynamic reactive power optimization method for a large-scale photovoltaic access distribution network, in particular to a photovoltaic reactive power control and feeder automatic voltage regulator (SVR) gear setting problem. Background technique [0002] The development of new energy power generation is an important measure for my country to ensure energy security, respond to climate change, and realize its commitment to reduce emissions. Since my country implemented the "Renewable Energy Law" in 2006, new energy power generation technology has developed rapidly, and green renewable energy mainly based on photovoltaics has been favored. It is planned that by 2020, my country's photovoltaic power generation grid-connected installed capacity will reach 50GW. At present, my country's distributed photovoltaic power generation system adopts the method of "spontaneous self-use, surplus to the grid, and grid regulation". After larg...

AI Technical Summary

Problems solved by technology

So far, there have been no literature reports and practical applications on the effective combination of distributed photovoltaic reactive power control methods with the optimal operation of distribution networks and the optimization analysis of multiple objectives at the same time

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